Car wash without connection to water and sewerage. Water recycling system for car wash

The growing number of cars every year creates fertile ground for the opening of car washes. Despite the fact that this business is profitable and, at first glance, not problematic, there are many nuances in it. One of them is the necessary treatment of wastewater from car washes, due to the requirements of environmentalists. The cleaning process is costly and requires special equipment. However, the rational use of purified water will justify the costs.

Modern car washes use all kinds of chemicals to wash cars. If you do not clean up, then harmful substances along with engine oil and fuel can go into water bodies or get into systems central water supply. The need for water purification is due to the requirements for car washes. The Sanitary and Epidemiological Station controls the work of filtering and neutralizing water in order to preserve the environment. Thus, if the car wash does not pass certification and does not confirm its environmental safety, it will not be allowed to work.
The main document regulating wastewater treatment is SanPiN 2.1.5.980-00 " Hygiene requirements to the protection of surface waters”

The main controlled parameters of wastewater

Water treatment can also be beneficial for car washes themselves. Spending a large amount on a daily basis, the organization incurs significant costs associated with the payment of counters. A closed-loop water purification system for a car wash will allow the reuse of waste water after it has passed through a system of sumps and filters. When using such systems, water savings are about 80%. The remaining 20% ​​is lost along with dirt and impurities.

Thus, the water treatment system for car washes is cost saving and environmentally friendly.

What problems with the water supply can be?

For effective work car washes need large amounts of water. In the event that the enterprise is located far from the water supply channels, and it is difficult to conduct water supply, the operation of the car wash is jeopardized. On average, 100-300 liters of water are needed to wash one car for 10 minutes using a high-pressure cleaner.
In practice, this is what happens:
Single car wash:
- water consumption is approximately 80 l;
- time - 20 minutes.
For 8 hours, the consumption for one washing post will be - 80x (8x60/20) = 1920, which is 36% less than according to the norms.

What is the solution?

The best solution in this case would be the organization of a water cycle system at a car wash. Water recycling means that the used water will be thoroughly cleaned and then reused. The cycle continues for several weeks until the waste water is completely removed and fresh water is poured. Recirculation systems are able to purify water from mechanical impurities: sand, clay, oil products, destroy bacteria and remove odors.

The principle of operation of water treatment plants

At the heart of any water treatment system for car washes is the principle of settling and subsequent filtration. Before entering the settling tanks, water passes through the so-called receiving tray, on the grates of which large mechanical impurities remain. Further, through settling, various suspended solids - a mixture of dust, ash, soot, sulfates, etc. settle to the bottom, and oil products float to the surface, after which they are removed by special equipment.

Clarified water passes through sand filters. The purified water is either sent to the sewer or more thoroughly purified for reuse. The sediment obtained as a result of settling is dehydrated and taken out.

What types of car wash water recirculation system are there?

Treatment facilities in a closed system can be of three types.
1. The first way of organizing the system consists of the following stages: settling tanks, successive fine filtration, adsorption of small particles. During adsorption, small contaminants are absorbed by the surfaces of solids - adsorbents. Silica gels, alumina gels, active clays, ash, slags, sawdust, peat, etc. can act as adsorbents.

2. The flotation method is based on the removal of particles that are lighter than water and do not precipitate. With the help of manipulations with rarefied air, such contaminants are brought to the surface, after which they are removed with special equipment. After the flotator, the clarified water is purified by means of a sorption filter. Flotation is most effective for water purification from oil products.

3. Another method is based on chemical water purification followed by filtration. There are two options for reagent cleaning:

• Coagulation. Special substances, when interacting with impurities, form flakes that precipitate;
• Oxidation. Oxidation removes harmful compounds. Effective for removing unwanted odor, color and getting rid of algae. Chlorine and ozone act as oxidizing agents. Due to the fact that the reagents are expensive, corrosive and require sophisticated equipment, this method did not receive distribution.

Most effective combined methods cleaning. An example of a combination of methods is the following sequence. First, water enters the settling tanks, in which the coagulation process takes place with the help of reagents. Further it is subjected to flotation in order to remove oil products, after which it passes through fine filters. At the next stage, the water enters the high-pressure apparatus for reuse.

Choosing a water treatment system for car washes

When choosing a water purification system for car washes, you should be guided by the following parameters:

1. Water volume. Small car washes and large washing complexes require different treatment facilities.
2. The plan of the premises, the characteristics of the territory, as well as the type of soil. Based on these parameters, individual systems can be designed.
3. Further use of waste. If water will be discharged into the municipal sewer, sedimentation tanks and simple sand filters are used for cleaning. If the enterprise vicious circle water circulation, the cleaning system consists of a sequence of several filters that will not only clean it of dirt, but also deodorize and neutralize it.
4. Place of installation - ground or underground. Settling tanks are usually installed underground. Flotation systems, for example, are located on the surface.
5. Purification method (filtration, flotation, exposure to reagents).

The choice of cleaning system must be made at the design stage of a car wash in order to avoid problems with drainage. The type of filters and their number will be affected by the location of the car wash. For example, outside the city, you will mainly have to deal with dirt and dust. In the city, treatment facilities will have to deal with anti-icing agents and technical salt.

Also when choosing treatment facilities it is important to pay attention to the presence of an anti-corrosion coating, in the absence of which the installations will quickly fail, especially when using chemicals.

Types of treatment facilities

Cleaning systems of both Russian and foreign brands are widely represented on the market.
production. The most popular of them are described below:

aros

Systems under this trademark are produced in Russia. Depending on the components, they can purify from 80 to 97% of impurities. The system includes:

• sand and gravel filters;
• a submersible pump that allows you to pump water out of septic tanks;
• storage tank clean water;
• water supply equipment for reuse.

Karcher

Washing equipment under this brand has gained wide popularity in Europe. Among the entire range are specialized installations for water treatment at car washes. At the first stage of purification in such installations, the liquid passes through mechanical filters, then it undergoes flocculation, during which oil products are removed.

The essence of the operation of equipment under the TM "Sviyaga" is to sequentially remove contaminants from the water. At the first stage, water enters the flotator, where it is purified from oil products. Further, the chemistry that is part of the detergents is extracted from the liquid. The last stage involves cleaning through sand filters and a thin cloth. The water purified by this system is unsuitable for further use. Therefore, the installation of equipment under TM "Sviyaga" is justified only in case of draining the liquid into the sewer.

Uko

This system is monoblock and is distinguished by its compactness, capable of removing up to 95% of contaminants. Water purification alternately occurs at several stages. Drainage pump pumps water to the first flotation cell where oil and fuel are separated. The liquid is then poured into another compartment, where residual dirt is removed by filtration. The resulting water can be reused.

stingray

Skat systems allow you to fully automate the process of water purification. The treatment plant consists of three blocks: a primary storage unit, a deep cleaning unit and clean water storage tanks. At the first stage, mechanical impurities in the form of sand and clay are removed. In the deep purification unit, with the help of coagulants, oil products are purified, then the water is purified by filtration, and at the last stage it is disinfected with activated carbon.

Flamingo

Monoblock universal complex. Productivity 0,5 — 20 m3/hour. Water purification at a car wash occurs with or without coagulant reagents. The consumer himself can choose the treatment mode: recirculation or discharge of wastewater into the sewer.

One of the most FAQ that arise from entrepreneurs who want to open a car wash: what to do with dirty water? Of course, you can’t just pour it into a ditch, and Rospotrebnadzor has requirements both for the degree of purification of recycled and waste water, and for the organization of washing processes. Without compliance with these requirements, you will not be approved by the project and will not be allowed to put the sink into operation. And if they find violations already during work, they face a hefty fine.

What is the main problem? According to our laws, you cannot drain dirty water into the sewer - neither into the household, nor even into the storm. There are quite stringent requirements for the quality of wastewater entering these systems. Nobody needs your dirty water to get into the city's sewage treatment plant, which, as a rule, is worn out and working at the limit, and therefore there is a possibility of various excesses. For example, oil pollution must be removed before entering city networks. This is primarily due to the fact that urban sewage biological treatment facilities are not designed to treat wastewater from oil products, and their entry into the system has a detrimental effect on bacteria that clean wastewater from organic pollutants. Storm sewers very often do not have treatment facilities at all, and all oil products will go straight into the river. Thus, for washing, the following options are possible.

1. Make absolutely sealed containers for dirty water and, as they fill up, take out this water by Spetstrans vehicles. It is not a fact that the project of such a sink will be agreed upon, although everything is possible. Much more important point– the cost of removing dirty water will simply eat up all the profits of the car wash. Washing a car, depending on the season and weather, takes 100–200 liters of water. Disposal of a cubic meter of water costs about 2 thousand rubles. It turns out that about 300 rubles are added to the cost of each wash. There is not even a profit, there are already losses.

2. Use a water recycling system when the water after washing is cleaned and can be used again. General principle operation of the recycling water supply system: after washing, dirty water flows into a drainage tray on the floor, and from there it enters a special sump, which is also called a caisson. More precisely, it should not be one settling tank, but two or three, interconnected by pipes. Sand and large particles of dirt settle in the first settling tank, oil products settle in the second settling tank, and initially purified water is taken from the third settling tank, which is also called the pump tank. submersible pump and fed into the treatment plant. There it undergoes deep cleaning and returns to the AED inlet. Rinsing the car is done with fresh water so that there are no streaks left. To prevent the system from overflowing, the fresh water consumption for rinsing is 10-15% of the total water consumption for washing. If 150 liters are used, then approximately 15 liters of fresh water is needed for rinsing. Standard treatment plants allow the use of water up to 50-100 cycles, after which it must be disposed of. As the recycled water is used in the washing process, salts gradually accumulate in it, especially in winter, when roads are watered with anti-icing chemicals. When salts accumulate in excess of the norm, then they change the water. In this case, the cost of disposal is no longer affordable, and you need to pay less for water consumption.

In some cases, officials may allow the discharge of treated water into storm sewer after additional post-treatment, you need to find out about this in local authorities. This is prohibited by the regulations, and if such things are agreed upon, then this is an official offense both on the part of the official and on the part of the owner of the car wash. An issued permit that is contrary to the regulations does not exempt from liability. There are standards for the quality of wastewater that can be discharged into the drain, the same for the entire territory of the Russian Federation. But there is also a ban on the discharge of industrial wastewater into storm sewers, and runoff from car washing is industrial wastewater.

Penalties for exceeding the maximum allowable concentrations (MPC) of various substances in wastewater can be very significant - up to 300 thousand rubles. for each discovered fact of discharge (five times the cost of water consumed over half a year). You can learn more about this at the local branch of Rospotrebnadzor and Vodokanal. Different excess of MPC can cost different money depending on which parameter is exceeded. Exceeding oil products - one amount of fine. Fats are different. The amount of water consumed also affects the fine.

However, there are significant problems with turnover. Firstly, recycled water most often begins to rot over time and acquires a characteristic smell, and than longer water stands in the sump, the stronger the smell. There are different ways to combat odor: ozonation, ultraviolet light, adding chlorine and hydrogen peroxide to the recycled water. Usually they manage only with peroxide and, in addition, they are periodically added to sedimentation tanks. tap water. Or you can use ultraviolet + peroxide. But ozonation for a car wash is too expensive.

The second point: difficulties with the equipment. Firstly, circulating water is not always purified to the quality of tap water and greatly reduces the resource of HP. Water that has passed through a cheap cleaning plant contains small particles that act as an abrasive and wear out the moving parts of high pressure pumps, clog the nozzles of washing equipment and damage the paintwork of cars being washed. Therefore, you need to be smart with additional filtering at the entrance to the device. Secondly, you need to set up a system for switching the supply of clean water and circulating water, and preferably from the remote control remote control so that the washer does not have to run anywhere: he washed it with a turnover, pressed the button on the key fob, rinsed it with a clean one.

All this leads to the fact that most owners of car washes, especially manual ones, buy a cleaning plant only in order to coordinate the project and put the car wash into operation. That is, roughly speaking, the treatment plant is standing, but not working, the cars are completely washed with tap water, and in the sedimentation tanks they make a secret drain plug and dirty water is discharged into the sewer. This, of course, is illegal.

At the same time, the treatment plant is bought on the basis of simple considerations: I will not work on the turnover anyway, so there is no point in spending a lot of money on it, the main thing is that the SES approves it. That is, a pile of iron is bought for $ 3-4 thousand, which even in theory does not work, but with a piece of paper-certificate.

If you do not want to have problems with regulatory organizations, you will have to use recycled water and call an silo pump to pump out the sediment. On average, Ilosos is called from once a month to once every six months. It depends on the volume of sedimentation tanks, the weather and the workload of the sink.

A more or less decent treatment plant costs at least $ 10-15 thousand. Offers for Russian market quite a lot - "AROS", "ARGO", "SORV-2", "CASCADE". Before choosing a treatment plant, you need to go to the local branch of Rospotrebnadzor and find out which treatment plant they are exactly ready to agree on, and only after that think about the choice.

With automatic car washes, the situation is better, because there the water consumption is much higher and a normal water recycling system is simply necessary. For example, at the majority of Russian automatic car washes that use Christ equipment, the treatment plants are not just standing, but also working. As a rule, these are Christ Fontis units with automatic filter washing.

Depends on the type of car wash, the number of posts and the flow of cars. required performance cleaning systems. Usually, a capacity of 1.2 m 3 / h is sufficient for a two-station manual wash. In general, for manual washing, 0.6 m 3 /h per post can be considered. For portal and tunnel washes, respectively, the performance should be taken according to the passport of the washing installation.

If the sedimentation tanks are located underground, they do not occupy usable area, only hatches will be on top. However, there are also above-ground sedimentation tanks. To solve problems with the smell of recycled water, sedimentation tanks can be located outside the washing room, and if this is not technically possible, ventilation should be considered.

With caissons main principle- the bigger, the better. It is optimal when the volume of settling tanks allows for a settling time of at least 8 hours - from the moment water enters the first settling tank to the moment it is taken to the treatment plant. For example, when dumping about 40 liters per minute, the volume is about 20 cubic meters, but in any case, calculations must be made taking into account the geometry of the sump. Optimal size settling tanks for manual and portal sinks - 15–25 cubic meters. For conveyors and truck washes, sumps can be two to three times larger. The first sump must be the largest and at least not less than the working volume of the suction pump.

In general, during construction, it is worth contacting your local specialized organization, which already has experience in car washes in your city or district and can make all the necessary calculations.

For production and economic needs consumes a huge amount of water. The situation is aggravated by the discharge of contaminated liquid into water bodies. Paying attention to nature protection and economic aspects of business, many enterprises are switching to recycling water supply. This method involves multiple use water resource. Reducing the consumption of fresh water and the discharge of wastewater leads to a reduction in the cost of water supply.

How does a closed water supply system work?

The most promising option for reducing water consumption is the creation of closed systems. Wastewater is treated with special equipment and reused. The components of the circulating water supply system depend on the volume of wastewater and the requirements that apply to the quality of the purified liquid. The progressive installation can be found in production shops, nuclear and thermal power plants, car washes, country houses with independent sources.

P - production; OS - wastewater treatment, HC - pumping station, OH-cooling

Depending on the technological processes of production, water may be contaminated from the first time or not require purification for a long time. A closed system is needed in several cases:

1. The source used does not have enough water to meet the needs of the enterprise.
2. The source is far from production shops(up to 4 km), located at a considerable height (25 m and above).

It is indispensable in regions with high cost of water, excessive hardness or pollution of the source, in case of a real danger of poisoning nature with effluents. Purification complexes, depending on the purpose, include from one to six stages. Among them: pretreatment in settling tanks, electroflotation, filtration, adsorption, reverse osmosis.

An electroflotator is a unit whose operation is based on the principles of electrolysis. It ensures the removal of chemical compounds and suspended particles from the water. Its indicators of purification of pollution with oil products are from 75 to 90%, PVA residues - from 50 to 70%.

Cooling facilities include settling ponds, cooling towers and spray ponds. In waterproof pits, water is cut into splashes by special nozzles and cooled by air currents.

The structural parts of a closed network are supply and return pipelines, circulation pumps, treatment facilities and filters, cooling plants. For water bodies suffering from the discharge of poorly treated wastewater or hot water, such a system becomes a real salvation.

Water recycling device in production

Information. Except open systems cooling exist closed structures where water does not come into contact with air. Temperature reduction occurs due to heat exchangers.

Benefits of Reuse

High costs for the purchase and installation of equipment for recycling water supply do not become an obstacle to implementation modern technology at enterprises.

• Water requirements are reduced by 10 times.
• Substantial financial savings.
• Responsible attitude towards the environment and rational use resources.
• No fines for dirty drains.

Principle closed system

Turnaround complexes in industry

Owners of enterprises who care about the environment and know how to calculate profits are switching to a progressive method - recycling water supply. The scope of its application is quite wide:

Energy

Energy industry enterprises - thermal and nuclear power plants need water to cool turbines or as a working fluid - steam. Technical water supply of objects occurs in two systems:

• straight-through;
• negotiable.

The process is going on in the following way: steam is fed into the cooling towers, cooled and condensed. Using a water pump to cool the turbines and auxiliary machinery. Water is taken from their natural source to make up for the losses inevitable in technological processes.

Cooling tower layout

Metallurgy

In many technological processes, water is used exclusively for cooling. It does not get dirty, but only heats up, so after cooling it can be used again. At metallurgical enterprises, the scheme of circulating water supply is more complicated. The liquid heats up and becomes contaminated with various impurities. Further use in gas cleaning will require cooling ponds or cooling towers and mechanical cleaning filters.

Oil refining

At modern refineries, 95-98% of all water used is in a closed cycle, including filtration and local treatment. For the chemical industry, closed systems are being developed that do not require the discharge of effluents into water bodies.

food industry

Recycled water supply is popular in the industry. According to this principle, the systems for washing containers, packaging and raw materials work. It is used in refrigeration applications.

mechanical engineering

Plants for the production of machines use water in the process of galvanizing parts. A closed system reduces its consumption by 90%. The use of an evaporator plant in the scheme of a closed system makes it possible to direct the salt concentrate for processing. The purified liquid is used for washing parts, and products from the concentrate are used to prepare electrolytic solutions.

The progressive method is being implemented in paper and pulp production, in the mining industry, in washing Vehicle, at laundries.

It is impossible to avoid water losses in industrial conditions. A partial decrease in its volume occurs due to evaporation. In the remaining liquid, the level of mineralization increases. This leads to negative consequences: active corrosion and salt deposition. The addition of fresh water is important to restore the quantity and composition of the circulating fluid.

Schemes of circulating water supply systems

Attention. Fluid losses in a closed network are 3-5%. They are replenished with fresh water from the spring.

The device of the reverse system for a car wash

Technological processes associated with car washing are accompanied by the consumption of large volumes of water and pollution of wastewater by oil products and PVA. To reduce the risk of getting dangerous compounds in natural environment, a system for the reuse of wastewater is being introduced. Installing a closed water supply system at sinks saves up to 90% of water and 50% of detergents.

Closed system at a car wash

Attention. To wash 10 cars, 1 m3 of water is required; when using a recirculating system, up to 50 cars can be washed with this volume of liquid.

Technical drains at a car wash go through several stages of cleaning:

1. Effluent enters the sump storage capacity. With the help of mechanical filtration, large particles of pollution are removed from the water.
2. The liquid is supplied by a pressure pump to the membrane flotation machine. Here, pressurized air is passed through ceramic membranes to saturate the effluents with bubbles. As a result, a foam is formed that absorbs the remnants of petroleum products and detergents. Pressure flotation removes fine sludge and suspended solids. These particles enter the accumulator, from where they are periodically removed for further processing.
3. After the flotator, water enters the tanks with filters to extract the remaining particles. The unit is designed for repeated use, the filters are regularly washed with a reverse flow of water, which enters the wastewater storage tank.

Scheme of washing re-water supply

For the final treatment of the liquid, chemical (adding reagents) and biological treatment. Complete removal of contaminants occurs by microorganisms.

The car wash room is equipped with two water circuits. They feed powerful devices for cleaning vehicles. One circuit is filled with fresh water, and the second is recycled. The liquid used after processing is used in the primary wash. It is used when applying detergents and pre-rinsing the foam. Fresh water is used for the final rinsing of the machines.

Attention. Rinsing with water from direct tap water avoids the appearance of white streaks on the surface of cars.

The recycling water supply of car washes is 90%, and fresh water for rinsing accounts for 10%. Wastewater treatment plants have different capacities - from 3 to 40 m 3 /hour. Low power systems are the most popular. They are used in most manual and automatic car washes. High-performance units are designed for large washing complexes with portal and tunnel systems. Their basic equipment:

• settling tanks;
• filters;
• flocculation system;
• sensors and manometers;
• pumps.

If necessary, the complexes are supplemented with water softening devices, aerators, reagent dispensers and other devices. The number of reuse cycles depends on the capabilities of the equipment. It is from 50 to 70 revolutions with cleaning. The cycle ends with the collection and disposal of the liquid.

Turnover system for a country house

In private houses, where it is possible to separate the sewerage and water supply networks, the installation of a closed system is practiced, which reduces the volume of fresh water consumed by several times. Its implementation is effective way saving resources. The system operates on the principle of reverse osmosis. One of its features is the need for periodic replacement of old water.

Equipment for the water recycling system

Attention. One of the advantages of recycling water supply country cottage– increase in the life of an autonomous well.

The installation of special equipment allows for the operation of circulating water supply. It includes multi-stage filters, various reagents and coagulants, bringing the chemical composition of the liquid to sanitary norms. A powerful treatment plant combines three types of processes:

• mechanical;
• chemical;
• biological.

Network control is carried out automatically, indicators are checked for compliance with the specified parameters. To maintain the efficient operation of the complex, certain climatic conditions are required:

• installation of a ventilation system for air circulation;
• the temperature is not lower than +5 0 .

A closed structure can have heating and plumbing. In the latter case, the development of biocenoses - a combination of microorganisms. Periodic flushing of tanks and pipes will help prevent the components from biological fouling. Special substances polyalkylene guanidines provide protection against several destructive factors: corrosion, salts and biofouling.

For the installation of water supply are used metal pipes. This material is strong and durable, but under the influence of changes in the composition of water, corrosion processes occur. The use of plastic is the best way to create efficient recycling. Polymers are neutral to moisture, chemical and biological substances, therefore they are recommended for creating closed networks.

Everyone knows that the work of the car wash complex is primarily associated with the presence of treatment facilities, wastewater treatment and water treatment for the organization of a closed cycle.

We have all heard about the closed cycle or recycled water supply in car washes, but not everyone knows what this mythical closed cycle really is and what recycled water really is.

Existing myth:

A closed cycle is when you have a certain amount of water and you wash all the cars with this water. Perform water purification by treatment facilities, from time to time (if necessary), adding clean water to this purified water, thereby replenishing it. Those. - “we drive the same water in a circle” and, if necessary, add clean water to it. What actually happens: To organize a closed-loop water supply at a car wash, you need to have: a container with clean water, a container with purified water, treatment facilities ... well, and preferably a car wash.

Let's assume that your clean water tank is full, and the recycled water tank is empty. We take clean water and wash the car, adding detergent - shampoo to the water. Detergent, as we know it is surfactants - surface active substances. Having available treatment facilities, we perform wastewater treatment and accumulate purified water already in a container for purified water.

You should be aware that surfactants are not completely removed from drains, so you have soapy water in a container with purified water. At the same time, it can be transparent and look very clean. However, if you only wash the car with purified water (with surfactants in its composition), then the result will most likely not please you. The car will be covered with a white coating.

Well, we washed the first car, the treatment facilities did their job and we got purified (circulating) water. We wash the second car with already purified (circulating) water, and ... after carrying out all the necessary operations, in order for the car not to be covered with a white (soapy) coating, it needs to be rinsed. That's what clean water is for. Rinsing takes place with clean water and, as a rule, in the amount of 10-15% of the total amount of water. Thus, there is a replenishment of already purified water containing surfactants. As a result, when you run out of clean water, and the container with purified (circulating) water is full, the purified water should be disposed of. Refuel with a new portion of clean water and .... forward !!!

The principle of operation of the circulating water supply system is shown in the figure:

CLEANING FACILITIES FOR CAR WASH AND MORE..:

Over the years of operation of car wash complexes, we have come to an understanding of which water treatment systems are more correct to choose in terms of: price, cleaning quality, operating costs. There are several options for water purification, fundamentally different from each other: !! We DO NOT offer: in-fill filter units as the only treatment plant for a car wash - where the main element of wastewater treatment and treatment is the in-fill element, usually quartz sand or other filter elements. !!

Our opinion: Filtering water treatment plants with a back-up filter can only be used in car washes as an ADDITIONAL stage of water treatment. The backfill filter copes well with the task: to remove fine suspension in ALREADY TREATED wastewater at the final stage of water purification - usually before disposal into the sewer. Distinctive features bulk filter installations, primarily in their low cost, in comparison with other water treatment equipment. However, one should understand what is behind this cheapness. Often, such installations are installed at car washes as "furniture" - for "paper".

Many car wash owners have seen own experience: in recent times inspection bodies - they no longer ask you for a certificate for a water treatment system, often they don’t even ask you to demonstrate how your treatment facilities work, but they just take analyzes of the effluents that you send to the sewer in order to write you an order to eliminate shortcomings and not a small fine for the operation of a car wash without a water treatment system. !!

We offer:

Treatment facilities based on the flotation method of wastewater treatment. These are all kinds of installations and combined systems of foam-pressure flotation. From simple - flotators, to complex - combined options flotation equipment with equipment for water treatment and final post-treatment of already treated effluents. Flotation treatment facilities are often installed on various industrial productions precisely because they do an excellent job with the task of cleaning wastewater. The flotation method of wastewater treatment is almost inexpensive - wastewater is cleaned with air with the addition of reagents: a coagulant and sometimes a flocculant. The principle of operation is quite simple. Preliminarily prepared effluents (after sedimentation and selection of large sludge, floating debris, etc.) are pumped into a special chamber of the flotation unit - a saturator.

In the saturator, wastewater is mixed with coagulant using a dosing pump. Air is supplied to the same chamber through a special device. All this happens under pressure. Next, the mixture of effluents, reagent and air enters the flotation chamber, where air is released in the form of small air bubbles. Air bubbles, floating up (as in a glass of champagne), carry away with them all the dirt in the water being purified, and in order for this to happen better, and for the dirt to “stick” to the bubbles better, a coagulant is needed.

As a result, the sludge separated from the drains floats together with air bubbles to the top of the flotation tank, where it is sent to the sludge collector or for additional treatment with the help of a special scraper.

Do you have any questions?

Installations of the FFU model range

Price: 333000 rub.

Settings model range FFU are used for wastewater treatment after washing cars, units, parts, containers, etc.; storm water from garages, parking lots, industrial enterprises; oil and fat production; and other types of wastewater from petroleum products, oils, fats, suspended solids, metal hydroxides.

Water treatment equipment FDP

Price: 500 rub.

Two-stage flow-through flotation machines are designed for the treatment of heavily polluted industrial wastewater from enterprises. Particularly suitable for cleaning wastewater from truck and special vehicle washes. The skimmer provides local wastewater treatment from the main types of contaminants: oils, fats, suspended particles, organic impurities, petroleum products, metal hydroxides, surfactants and other similar contaminants.

Car washing is a profitable business. However, to open it, it is necessary to collect a lot of documents in different instances. Additionally, a permit is required from the local SES, which will be issued only if there is a cleaning system. There may be a question about the advisability of installing special equipment. It is enough just to drain the waste water into the city sewer. Do not forget that car washes use special detergents various chemical composition. In the sewage of car washes machine oil and petroleum products. SES insures against accidental releases of environmentally hazardous substances from wastewater leaks.

What is car wash water treatment for?

AT European countries the owner of car washes is allowed to drain used water into local sewerage. It, together with sewage and storm water, is subjected to general filtration.

In Russia, the rules are different. They are easily explained by differences in wastewater treatment methods. We use activated sludge, which suffers greatly from oil products and some chemical compounds. Will not will, but it is necessary to provide for water purification at a car wash in order to avoid large fines for inspection inspectors or a complete closure.

Expensive equipment should not be considered a waste of money and the next requirements of the SES. It is possible to derive significant benefits from it. If a high-pressure washer is used to wash the car, then a large volume of water is required: for 10 minutes of servicing one car, about 200 liters of water. Today, the amount of water used is recorded by meters, which will have huge volumes. The output will be a treatment plant with a closed water cycle. This means that the water will be reused after certain treatment methods. Water loss in it will be only 10%. Accordingly, payment will occur only for the 10% of water that is collected.

Water cycling systems for car washes

Water treatment at a car wash

by the most simple option will be mechanical cleaning of foreign bodies. It consists of a number of sand traps and settling tanks. You can compare it with a large household septic tank.

The second option can be sequential filtration with adsorption of small particles. Effective at low concentrations of contaminants.

A popular car wash water treatment system is reagent treatment and further filtration.

It can be used several times, and the waste is recycled.

Flotation is the separation of foreign impurities from water according to their size and nature by passing contaminated water through electrohydrodynamic systems. Everything is under pressure. During flotation, gas bubbles are formed that “attract” foreign bodies and bring them to the surface.

Water purification process at a car wash

In one working day, car washes wash off several tens of kilograms of clay and sand with oils and petroleum products. To wash off the dirt, use a lot of water with a special detergent. The removal of foreign particles has been described above. You should study in detail the classic water purification system at a car wash.

Sumps are required attribute cleaning systems. It consists of a number of different containers for collecting and settling water. Foreign fractions are removed, water improves its organoleptic properties.

Next, the water is subjected to fine filtration. The final step is absorption. After that, the water is allowed to drain into the city sewer. But you can continue to clean it yourself for reuse. The liquid is distilled through cassettes for settling fine particles. Oil products are removed by flotation.

Choosing a water treatment system for car washes

Recycled water supply system "AROS-4"

Today there are many companies on the market that will quickly sell and install a cleaning system in a car wash. So there shouldn't be any problems finding equipment. However, a number of checks found that only every 6th car wash has an effective cleaning system. How to get into these 15%? Several recommendations should be taken into account.

How to solve the cleaning problem?

Most car wash owners come to cleaning system sales companies with one request: faster and cheaper. The seller is satisfied with this and he quickly makes the installation economical option cleaning. But after a couple of weeks after installing the system, problems begin.

Car wash owners have to negotiate with environmentalists with the help of bribes. The current GOSTs have strict requirements for water discharged into the sewer. There is an opinion that it is impossible to follow all the rules. Many simply ignore the quality of water treatment.

The main factors for choosing a water treatment system for car washes

First of all, the contractor should be familiar with technical requirements washing equipment manufacturer. Automatic systems and high-pressure cleaners can only use water of a certain chemical composition. If water is planned to be recycled, i.e. reused, it should be ensured right quality water. Sometimes it's just overlooked.

Then you should deal with the composition of wastewater. Take into account the detergents used. Filters should be cleaned not only from oil products, but also from surfactants.

The location of the car wash will also affect the set of filters. For example, outside the city, jeeps with a lot of dirt will be frequent visitors, but in the city - cars with de-icing reagents. If the contractor says that it does not matter, it is better to change him to another one. Water purification systems in both cases will be completely different. There are no universal filters and systems! The first weeks the water will be clean, but then filters that do not correspond to pollution will become clogged and stop working.

You should not install low-power devices - in the future it will cost more. But choosing volumetric installations is irrational. It is necessary to roughly calculate the required volume of water: about 60 liters are required for a passenger car, and 120 liters for a truck.

Recoverable filters will help save money. On the expendable materials you can spend a lot of money. But you should remember about the terms of the filter and wash it in time so that it does not become unusable.

Sediment must not be disposed of in municipal waste bins. Sign a contract for the removal of the collected sludge. To reduce its volume, I use dehydration.

Often preference is given to automatic systems so as not to distract staff from their main work. But with an increase in humidity, the electrician begins to malfunction, and a large number of pumps need excess power consumption.

Particular attention is paid to the anti-corrosion coating of the equipment. Unprotected surfaces in high moisture conditions will fail within a year.

Today, the location of treatment facilities underground has become fashionable. You should ask about the cost of maintaining such systems so that you do not call an excavator to replace one filter.

The cost of cleaning systems for car washes

The price of cleaning systems lies in the range of 4-15 thousand dollars. About 20% should be paid for her project, 20% for installation and 7% for commissioning. The ideal option there will be hiring an independent expert who will control all stages of the installation of the system - 10%. If this is not possible, then try to prescribe in the contract a re-analysis of water after two weeks of work. Only with its positive result, you can sign the act of acceptance of work performed.