SU1212956A1 - Sewage works for waste water of car and bus washer - Google Patents

Description

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The invention relates to sewage treatment plants and can be used in road transport enterprises for cleaning and reusing wastewater from washing cars and buses (in areas of wet, slippery, etc. soil with a capacity of up to 30 m / h sewage treatment up to 3-8 mg / l; oil and oil products up to 0-15 mg / l for suspended particles.

The purpose of the invention is to increase the degree of purification, save water and mechanize the removal of sediment.

The drawing shows the sewage treatment plant from washing cars and buses.

The device comprises a washing machine 1, a ditch 2, a source waste pipe 3 connecting the ditch 2 to the underground receiving tank 4 equipped with an annular bubbler 5, which receives compressed air, pumps 6 for transferring the grease drains from the receiving tank to the sump-quencher 7, equipped in the lower conical part with a pneumatic exhaust device 8 with an integrated movable valve 9, connected to a sump-damper 7 with a pipe 10 sump: A first stage with a pneumatic discharge device, a pipe 12 for connection with a sump 3 second stage (also with a pneumatic exhaust device), May, a petroleum trap 14 connected to a tank 15 for collecting oil and oil products, supporting port 16 for: installing settling tanks, a compressor 17 for supplying cool air to a bubbler of the receiving tank and pneumatic exhaust devices 8, pipeline 8, pump 19 connected to the inlet 20 with a valve, a first-stage floating-speed filter 21 made of polypropylene, a conduit 22 connecting the second-stage filter 23 intended for fine purification of waste oil products, with a filter 21 connected A pipe 24 with a sump of filter 23, a buried clean water tank 25, a pipeline 26, a pump 27, a pipeline 28, supplying clean water to the comb 29 of the washing machine, exhaust pipes 30, connecting pneumatic exhaust devices to the hopper 31 of waste, transport self-propelled

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: a device 32, such as a dump truck), a pipeline 335 that drains grease sludge from the tank of waste and from filter 21 to the receiving tank during filter regeneration, pipe 34, air pipes 35 supplying compressed air from the compressor to pneumatic exhaust devices and to the bubbler of the receiving tank of the gearbox 36 with the shaft 37 with the movable valve of the pneumatic exhaust device fixed at its lower end.

The principle of operation of sewage treatment plants for washing cars and buses is as follows.

A car or a bus enters the washing ditch 2, the washing machine 1 is turned on. With water coming from the comb 29, contaminants from the car are drained into the washing ditch 2. Then through the grate with a cell of 5x5 mm the waste water flows by gravity through the pipe 3 into the receiver

tank 4, from which periodically (4–3 times per hour) by the sludge pump 6 is pumped into the sump-damper 1, through pipe 10, the averaged water flows by gravity into the vertical sump 11 of the first stage. The water is settled and, after filling the settling tank 1 to a predetermined level, is spilled through pipe 12 into the settling basin 13 of the second stage.

Flooded particles of oils and petroleum products accumulate in the upper part of the sump 13 before the partition and periodically when the upper level reaches the upper level through the oil sponge. The trap 14 is discharged into the tank 15.

When the water reaches the upper level of the sensor (the pump 19 is not automatically specified and the sump water from the sump 13 is automatically indicated)

is pumped through the inlet 20 to the filter of the first stage with a floating loading of polypropylene for its further purification from suspensions.

The water passed through the filter 21 enters through the pipeline 22 into the filter 23 of the second stage. After completing the purification of oil-oil products and suspensions, the water is drained: into the lower part of the filter (pallet), from where it flows by gravity through the clean-water tank 25 which R-fiH is heated by another heat source.

From the underground tank 25, as required, clean water is pumped through pump 27 through inlet pipe 26 and through pipe 30 is sent to the washing machine 1 for reuse or through pipe 34 to regenerate (rinse) the filter 21. In this case, clean water is taken by the pump 27 through the inlet pipe 26, through the open port and the discharge pipe 34 is directed to the filter 21, from which contaminated water is sent through the outlet pipe and the drain pipe to the pipe 33.

To control the quality and quantity of the floating load of polypropylene, the top loading hatch of the filter opens once a month.

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21 and visually monitored.

With the accumulation of sediment in the conical parts of the settlers 7,

5 11 and 13, the valves 9 in the pneumatic discharge devices 8 automatically open and the throat deposits under their own weight and pressure of the upper layers of the settled water will mix to drain) into the air discharge container 8, after which the valves 9 close and open the valves of the compressor J7 Sediment compressed air through the air pipe 5 to the pipelines 30 is squeezed from the pneumatic exhaust device 8 through the exhaust pipes 30 to the bunker 3 of the sludge installed on the overpass, from where it is transported by dump truck to the places allocated to the ESS .

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Claims (1)

CLEANING SYSTEM FOR WASTE WATER FROM WASING CARS AND BUSES, containing the source pipe, settling tanks of the first and second stages, pneumatic exhaust devices with valves and their drive mechanism connected to the mud silo, compressor, filters of the first and second stages, characterized in that, in order to increase the degree of water purification, its economy and the mechanization of removing mud sediments, it is equipped with an underground receiving tank connected to the pipe of the initial effluents with an annular bubbler and a pump, and also, between the receiving tank and the first stage sedimentation tank, a quencher-separator with a device for pneumatic discharge of mud sediments, while the lower part of the first stage filter and the upper part of the mud sediment hopper are in communication with the underground receiving tank. g s