SU1416443A1 - Apparatus for purifying oil-containing waste water - Google Patents

Abstract

The invention relates to devices for the treatment of industrial wastewater, in particular for the separation of mechanical impurities and oil products from water, and can be used in all sectors of the national economy. The purpose of the invention is to intensify the cleaning process. In the device for treatment of oil-containing wastewater, a funnel-shaped water distributor is located along the axis, and a device for collecting purified water from several levels into an annular tray is located along the perimeter. The collection of sludge separated from oil products is collected into a storage tank by means of a circulation pump, and the floating oil products are forced out into the separation tank for dehydration. 1 il. WITH

Description

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The invention relates to devices for the treatment of industrial wastewater, in particular for the separation of mechanical impurities and oil products, and can be used in all parts of the national economy.

The purpose of the invention is to intensify the process of water purification by otmyuky sludge from petroleum products.

The drawing shows a device for the purification of oily wastewater.

The device includes a vertical pressure-type housing 1, a device for separating heavy impurities in the form of funnels installed one above the other along the housing axis, a device 3 for collecting clarified water, an annular collecting tray 4, a slime-storage tank 5, a circulation pump 6, outlet valves 7 and 8, a remote heater 9, a cutting tank 10, a tank 11 of purified water with a nozzle 12, a recirculation line 13, a receiving tank 14, a polluted drain 15, a feed pump 16, a water air ejector 17, atmospheric air inlet 18 pressure tank 19, input 20 of coagulant solution, input of 21 flocculant solution, recirculation line 22, drainage pipe 23. Spam accumulator 5 is made with a conical lower part, outside of which a screw 24 is mounted tangentially, communicating 1C (ice with the feed hopper 25 and thermal neutralizing unit 26. The upper part of the sludge accumulator 5 is connected by means of a recirculation pipe 27 to the lower part of the body 1, and the lower conical part connected by a pipe 28 to a pipe 23 for draining the sediment. The device for discharging the pipe of purified water 29 and spilled oil products 30. The suction and discharge nozzles of the pump 6 are equipped with a jumper 31 and shunts 32 and 33. On the pipelines installed valves 34-40.

The device works as follows.

The contaminated drain 15, the contaminated oil and mechanical impurities, enters the receiving tank 14 and then is pumped 16 tangentially into the funnel 2, distributed over the height of the sump. In the funnels 2, the separation of petroleum products and suspended matter (mechanical impurities). The suspension over the walls of the funnels is lowered into the conical part of the settling tank, where it is circulating. water flow is maintained in a suspended state, and then pump 6 through the pipeline 28 is sent to the sludge collector 5, in which it settles to the bottom

by reducing the flow rate, and the water through line 27 returns tangentially to the sump to remove sediment from the conical bottom. Oil products are collected in the center of the funnels, where they coalesce, easily splashed into the upper part of the apparatus.

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Purified water is taken from several levels by fixture 3 in

Q annular collecting tray 4. To displace the petroleum products collected in the upper part of the apparatus into the preparation tank 10, periodically cover the valve 7 to the bypass

5 to pipe 29 of purified water and open the valve 8 on the branch pipe of 30 newly produced petroleum products. The purified water is heated in an upstream preheater 9 with steam and collected in tank 11, keeping at 70-80 ° C for 20-30 minutes for disinfection. If additional cleaning is required, a recirculation line 13 is provided, the coagulum 20 and flocculant 21 solutions are introduced.

To prevent sedimentation in the receiving tank 14 from falling out of mechanical impurities from the incoming contaminated drain 15, a recirculation line 22 is provided. Oil product separated in the cutting tank 10 is fed for recycling, water is transferred to the receiving tank 14. The collected sludge accumulator 5 transfers oil sludge by screw 24 in the bunker 25 thermal neutralizing set-. 26. For a stable supply of sludge and the elimination of stagnant locations, the screw 24 in the sludge collector 5 is installed externally tangentially offset

5 not less than 300 mm below the top of the cone pshamonakopitel under the longitudinal slit in the cone. Purified water is reused in circulation. The sump is drained through pipe 23.

In case of removal of oil products collected in the conical part of the sump from oil products, valves 35 and 36 are interrupted on pipelines 27 and 28. The pump 6 operates in the forward direction through valves 38 and 39 and jumper 31 with valves 34, 37 and 40 closed and in the opposite direction with open valves 37 and 40 through shunts 32 and 33 with 34, 38, 39 closed. Oil products washed from the sludge are splashed out, and washed mechanical impurities with water are pumped through pump 6 through pipeline 28 to the sludge deposit 5 with open valves 35, 36 and 39 and closed 34, 37, 38, 40, water

pipeline 27 returns. The performance of the heat treatment installation 26 decreases

: due to elimination of washed petroleum products.

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1416443

pass through the pipe 30 in the cutting tank, without the upper scrapers, radial tray and oil tank with a pump.

Claims (1)

Invention Formula A device for the treatment of oil-containing wastewater, including a housing, a device for separating heavy impurities in the form of funnels installed one above the other along the axis of the housing, devices for collecting clarified water and floating oil products, a sludge removal pipe, so that, in order to intensify the cleaning process, It is equipped with a conical bottom with a conical bottom part connected to the sludge drainage pipe, a recirculation pipeline with a pump, a kitsin connection, the upper part of the accumulator and the lower part of the body, while sucking The proposed device, by comparing 25 and the discharge pipes of the pump to the supply with the prototype, intensifies the purification of oily waste water without a scraper mechanism, removes the separated mechanical impurities from petroleum products, collects them in the spam maker and transports them for thermal protection, and then transports them for the thermal protection, and then transports them to the thermal sprinkler and spreads them for thermal protection. bridges and shunts connected to the sludge drainage pipe and the recirculation pipeline, and the sludge collector is equipped with an auger mounted 30 outside of the tangential conical parts made with a longitudinal slit, with the lower end of the screw is located below the top of the cone. 20 2. 73 33