RU180012U1 - DEVICE FOR ROTARY WATER SUPPLY OF CARS - Google Patents

Abstract

The claimed technical solution relates to devices designed to provide water supply with a closed cycle of water circulation and is used to treat wastewater and reuse them in various car washes, such as automobiles. The technical result is achieved due to the fact that the device for reverse water supply includes passive and active units recycling water treatment, where the first consists of a receiving well, a sand separator, an oil separator, a storage well, a filter with a sorption charge cargo (activated carbon), sewage pumping station, and the second includes a coagulation tank, booster and circulation pumps; microfiltration column, characterized in that the active water treatment unit contains a storage tank of filtered water, a fine sorption filter, a bag filter, a washing pump, while the active cleaning unit operates automatically from the control panel, and recycled water from the storage well with the feed pump is directed to the active cleaning unit.

Description

The claimed technical solution relates to devices designed to provide water supply with a closed cycle of water circulation and are used for wastewater treatment and their reuse in various car washes, for example automobile.

From the prior art, a known system for treating recycled water when washing a car (RU 104936 dated 10.28.2010), containing processing equipment associated with a piping system with wastewater treatment apparatus, including a storage tank into which wastewater flows by gravity, a pump for supplying water from a storage tank to a reactor configured to supply a flotator, coarse and fine filters to it with a pump - dispenser of a coagulant working solution.

The disadvantage of this solution is the relatively low efficiency of wastewater treatment due to the lack of sorption apparatus and the inefficiency of the system as a whole due to water overruns.

Another water recycling system for car washing is known (RU 2452689 dated February 24, 2011), which contains a storage tank, a two-section reactor, a metering pump, a diaphragm pump, a sludge collector, a flotator, and sorption filters for coarse and fine cleaning.

Also known is a reverse water supply system for washing cars (RU 2523802 dated 12/10/2012), containing technological equipment associated with a piping system with wastewater treatment plants, includes several storage tanks with different purposes, a pump, a reactor, a compressor, a pump - dispenser, flotator, coarse and fine filters, diaphragm pump, sludge collector.

The main disadvantages of these solutions are the lack of the possibility of saving water, due to:

the use of a flotator, which makes the structure cumbersome;

coarse sorption filters do not provide an effective separation of the remains of the flock located in the treated water, as a result of which the load on the fine sorption filters increases, which leads to the rapid exhaustion of their resource.

The closest technical solution to the claimed facility is a reverse water supply system for car washing (RU 73326 dated 12/26/2006), containing a pre-treatment unit, pumps, filters, clean water tanks additionally contain a reagent treatment unit, including devices for dispensing reagents and contact a tank, a sludge separation unit connected to a pre-treatment unit for returning the water separated from the sludge for further treatment and a membrane filtration unit for desalting water. Filters are made in the form of alluvial filters with an automatic cleaning and regeneration system, and the substance for creating the alluvial layer is selected in such a way that water-soluble substances are removed on one of the filters, and water-insoluble substances are removed on the other filter to increase the degree of purification. The disadvantage of this solution is the complexity of the hardware solutions for creating alluvial layers of powder sorption materials.

The objective of the claimed utility model is to create a device for recycling water supply of car washes with an economical water flow system.

The technical result is achieved due to the fact that the device for recycled water supply includes passive and active treatment units for recycled water, where the first one includes a series of tanks connected in series, such as a receiving well, a sand separator, an oil separator, a storage well, a filter with sorption loading (activated carbon), sewage pumping station, and the second includes a coagulation tank, booster and circulation pumps; microfiltration column, characterized in that the active water treatment unit contains a storage tank of filtered water, a fine sorption filter, a bag filter, a washing pump, the active cleaning unit being configured to automatically operate from a control panel, the device further comprising a feed pump configured to supply recycled water from the storage well to the active cleaning unit.

A possible development option for the main technical solution is that the coagulation capacity contains level sensors.

A variant of the development of the main technical solution is possible, consisting in the fact that level sensors are located in the storage tank of filtered water.

To disclose the claimed technical solution, a device for recycling water supply of car washes, in FIG. 1 and 2, a graphical description is provided, where:

in FIG. 1 shows a device for recycling water supply of car washes;

in FIG. 2 shows a block diagram of a sewage system and reverse water supply for a car wash.

A device for reverse water supply of car washes (Fig. 1) includes blocks of passive and active wastewater treatment. The passive cleaning unit includes a series of buried tanks connected in series: a receiving well (pos. 1), a sand separator (pos. 2), an oil separator (pos. 3), a storage well (pos. 4), a filter with sorption loading (activated carbon) (pos. .5), sewage pumping station (item 6). Recycled water from the storage well (pos. 4) by the feed pump (pos. 8.1) is directed to the active cleaning unit located in the car wash. The active cleaning unit includes a coagulation tank (pos. 8.2) with level sensors (pos. 9), a booster pump (pos. 10.1); circulation pump (item 10.2); microfiltration column (pos. 10.3), storage tank for filtered water (pos. 11) with level sensors, fine sorption filter (pos. 12.1), bag filter (pos. 12.2), flush pump (pos. 12.3). The active cleaning unit operates automatically from the control panel (item 7). The purified water enters the supply tank 13, from where it is supplied by the pumping station (pos. 13.1) to the car wash equipment (pos. 14).

The receiving well (item 1) is an underground tank. Contaminated water from a car wash, as well as washing water from a microfiltration unit and a fine sorption filter, enter the receiving well.

The sand separator (item 2) is a gravity settler. In addition to settling, it acts as a contact tank, where the wastewater of a car wash is treated with coagulation products contained in the wash water.

The oil separator (item 3) is a gravity sedimentation tank with laminar plates, separating particles of suspension of oil products that are lighter than water.

The storage well (item 4) is an underground tank, from where recirculated water is taken to the active treatment system.

A sorption filter (item 5) is a gravity sorption filter in which activated carbon is used as a filter media. The filter is designed to purify excess water coming from the circulating system into the city sewer network.

Sewage pumping station (item 6) is a container in which there is a pumping station for pumping excess effluents from the reverse system of the car wash into the city sewer after cleaning in a filter with sorption loading.

The operation of the pumps, the microfiltration unit and the fine sorption filter are controlled by the automatic control unit (item 7). Moreover, this unit provides the following functions: equipment control in accordance with a given algorithm; protection of electric circuits against overload and short circuit. According to a given algorithm, the automation unit processes the input signals and controls the pumps and electromagnetic valves that are part of the cleaning system. The basis of the automation unit are logical controllers that ensure the execution of the algorithm, compliance with the sequence of operations, time intervals, etc. The controllers also allow you to change the system settings if necessary. In addition to the control, the automation unit displays the main stages of the cleaning process and the status of the system - with the help of control lamps, as well as on the LCD displays of the controllers.

The feed pump (pos. 8.1) is a pump that delivers water from the storage well to the coagulation tank of the active cleaning unit.

The coagulation tank (pos. 8.2) is a settling tank in which coagulation, pH correction and sedimentation of treated wastewater takes place before they are fed to the microfiltration unit. The water recycling system may include several sump tanks used alternately.

Level sensors (pos. 9) are float-type devices that signal the achievement of the maximum and minimum technological water level in storage tanks.

The booster pump (pos. 10.1) is a pump that feeds water into the circuit to the microfiltration column.

The circulation pump (pos. 10.2) is a pump that circulates water in the circuit of a microfiltration unit.

The microfiltration column (pos. 10.3) is a cylindrical body in which several Aragon filter cartridges produced by Aquatoria LLC, St. Petersburg are interconnected. Filter cartridges are made by copolymerization of polyhydric phenols with formaldehyde; they have a high volume of porous space with an average pore diameter of less than 1 μm. A circulating water treatment plant may include several identical microfiltration columns connected in parallel.

The storage tank (pos. 11) serves to accumulate conditionally clean water after microfiltration.

The fine sorption filter (item 12.1) is a pressure filter; aluminosilicate sorbent and activated carbon are used as filter media. The filter provides a fine cleaning of dissolved contaminants.

A bag filter (pos. 12.2) is a filter in the housing of which there is a filtering element, which is a bag of special filtering material. The filter provides final cleaning of fine suspensions.

The washing pump (pos. 12.3) is designed for backwashing the fine sorption filter.

The pump station (pos. 13.1) is used for the pressure supply of purified water from the storage tank (pos. 13) to the car wash station (pos. 14).

The operation of the claimed technical solution is carried out on the block of the water movement scheme, which is shown in FIG. 2.

Recycled water is taken from the storage well and enters the active treatment unit, in which reagent water treatment takes place, preliminary sedimentation, followed by filtration at the microfiltration unit. The clarified water enters the intermediate tank and then passes the final cleaning at the fine sorption treatment plant.

Completely purified water enters the car wash, and after use it enters the intake well, where it is mixed with the wash water of the microfiltration unit and the fine sorption filter. Thus, contaminated water is brought into prolonged contact with the formed floc of the coagulant, which provides preliminary water purification in the sand trap and oil separator, where the circulating water moves by gravity.

If necessary, the circulating system is replenished with tap water entering the tank of purified water. Excess water from the circulating system is sent to the city sewer network after sorption treatment in a gravity-activated filter with activated carbon.

Coagulant sediment with associated contaminants accumulates in buried containers and periodically (but not more than 1 time per month) should be taken out for disposal using specialized sewage disposal equipment.

The advantages of the described technical solution are the simplicity and compactness of the equipment used due to the rejection of the use of bulky flotators. The use of microfiltration on Aragon ion-exchange filter cartridges provides effective clarification of water at the active stage of processing. The combination of the active and passive stages of purification of circulating water provides the required quality of purification, while the system has a significant buffer volume. Maintenance of the installation consists in replenishing the supply of reagents, replacing filter materials, and periodically transporting sludge. Thus, the operation of a circulating water supply system with a high turnover ratio and minimal recharge and discharge is ensured.

Claims (3)

1. A device for recycled water supply, including passive and active treatment units for recycled water, where the first one includes a series of tanks connected in series, such as: a receiving well, a sand separator, an oil separator, a storage well, a filter with sorption loading with activated carbon, a sewer pumping station, and the second includes a coagulation tank, booster and circulation pumps; microfiltration column, characterized in that in the active water treatment unit there is a storage tank of filtered water, a fine sorption filter, a bag filter, a washing pump, the active cleaning unit is configured to automatically operate from the control panel, while the device further comprises a feed a pump configured to supply recycled water from a storage well to an active cleaning unit. 2. A device for recycled water supply according to claim 1, characterized in that the coagulation capacity contains level sensors. 3. A device for reverse water supply according to claim 1, characterized in that level sensors are located in the storage tank of filtered water.

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