CN200963540Y

CN200963540Y - Automatic counter washing pollution discharging device for pollution filter

Info

Publication number: CN200963540Y
Application number: CN 200620021906
Authority: CN
Inventors: 张宏; 贾海鹏
Original assignee: Daqing Oilfield Co Ltd
Current assignee: Daqing Oilfield Co Ltd
Priority date: 2006-10-31
Filing date: 2006-10-31
Publication date: 2007-10-24
Anticipated expiration: 2016-10-31

Abstract

An automatic back-flushing sewage discharging device of effluent filter relates to a back-flushing sewage discharging device for solving the problem that prior device can not effectively separate and discharge the sewage on the filtering material. One end of a suction pipe is connected with a water pot, and the other end is connected with a water pump; the outlet pipe of the water pump and a gas pipe on a gas compressor are connected with a gas-liquid mixing device; one end of a back-flushing inlet pipe is connected with the gas-liquid mixing device, and the other end is connected with the water-distribution gas-distribution pipe which is communicated with the bottom of a filter pot by an intake valve; the top of the filter pot is a conical end, the inside of the conical end is provided with a dirt-collecting bowl, and the large opening edge of the dirt-collecting bowl is fixed and closedly connected with the inner wall of the conical end to form a circular dirt-collecting bowl; one end of the back-flushing outlet pipe is communicated with the bottom of the circular dirt-collecting bowl, and the other end is connected with a sewage retracting pool by a discharge valve.

Description

Effluent filter automatic backwash blowdown apparatus

Technical field

Relate to a kind of sewage backwash device.

Background technology

China oil field successively is used for disposing polluted water in oil from the filter of the some models of external introduction; certain effect has been played in environmental protection; but owing to be subjected to the restriction of sewage disposal technology level at that time; there are some imperfection places on the project organization of some major technology parameters and treating apparatus; operation proof by the long term can not satisfy China to environmental protection requirement; truly have the necessity that to transform its technology; for solving the filtrate problem that hardens; the main at present mechanical agitation of using; big flow hydraulic reverse flushing; media regeneration is carried out in measures such as air backwash, but it is all very little to take effect.Trace it to its cause: the one, the greasy dirt that filter material surface adheres in the backwash process is all not separated; The 2nd, isolated greasy dirt does not have effective blowdown measure, causes the thorough or backflow of blowdown, and the part greasy dirt is still stayed in the jar.Existing sewage backwash device, the sewage draining exit unreasonable structure, discharge area is too little, causes blowdown not smooth, arranges unclean; With mechanical agitation and the flushing of big flow hydraulic reverse, the separated from contaminants weak effect that filtrate adheres to, filtrate runs off serious, and the pollution filtrate is difficult to be cleaned; Common mechanical stirs backwash power 30kw, and power consumption is big, and mechanical agitation device fault is many; Big flow hydraulic reverse flush water pump flow 500m3/h, the backwash water amount is big; Problems such as backwashing period is short.

The utility model content

The utility model not have all to separate for the greasy dirt that solves filter material surface in the existing sewage backwash device and adhere to and isolated greasy dirt does not have the problem of effective blowdown measure, and the effluent filter automatic backwash blowdown apparatus of proposition.

The utility model is made up of filtering tank, backwash water inlet pipe, backwash outlet pipe, sewage recovery pond, water pot, water pump, suction hose, outlet pipe, gas compressor, appendix, inlet valve, flowing water Valve and gas-liquid evenly mixing device; One end of suction hose is connected on the lower wall of water pot, the other end of suction hose is connected on the inlet of water pump, the outlet pipe of water pump and the appendix on the gas compressor are connected on the arrival end of gas-liquid evenly mixing device, one end of backwash water inlet pipe is connected in the outlet of gas-liquid evenly mixing device, the other end of backwash water inlet pipe is connected on the distribute water and air pipe that is communicated with the filtering tank bottom by inlet valve, the dissolved air water that enters the filtering tank bottom upwards flows and washes away the filtrate of filtering tank pars intermedia, dissolved air water is with the top of dirt separation to filtering tank, the top of filtering tank is a conical head, inside at conical head is equipped with dirt collecting bucket, the fixing sealing in dirt collecting bucket Da Kou edge is connected on the inwall of conical head, form the dirty pond of ring-type collection, one end of backwash outlet pipe is communicated with bottom, the dirty pond of annular collection, and the other end of backwash outlet pipe is connected on the inlet of sewage recovery pond by flowing water Valve.

Dirt separation and discharge that effluent filter automatic backwash blowdown apparatus effectively adheres to filter material surface, and gas consumption is few, air compressor machine power drops to 7kw, and the backwashing water pump discharge drops to 100m ³/ h, no driving member on the device, fault is few, and the cycle can rise to 48 hours by former 24 hours, advantage such as have backwash efficient height, the cycle is long, water consumption is few, blowdown is thorough.

Description of drawings

Fig. 1 is a structural representation of the present utility model.

The specific embodiment

Concrete real-time mode one: in conjunction with Fig. 1 present embodiment is described, present embodiment is made up of filtering tank 1, backwash water inlet pipe 1-4, backwash outlet pipe 1-5, sewage recovery pond 2, water pot 3, water pump 4, suction hose 4-1, outlet pipe 4-2, gas compressor 5, appendix 5-1, inlet valve 8-1, flowing water Valve 8-3 and gas-liquid evenly mixing device 6; The end of suction hose 4-1 is connected on the lower wall of water pot 3, the other end of suction hose 4-1 is connected on the inlet of water pump 4, water pump 4 is with pressurization in the water suction water pump 4 in the water pot 3, the outlet pipe 4-2 and the appendix 5-1 on the gas compressor 5 of water pump 4 are connected on the arrival end of gas-liquid evenly mixing device 6, gas-liquid evenly mixing device 6 evenly mixes air water, the end of backwash water inlet pipe 1-4 is connected in the outlet of gas-liquid evenly mixing device 6, the other end of backwash water inlet pipe 1-4 is connected on the distribute water and air pipe 1-6 that is communicated with filtering tank 1 bottom by inlet valve 8-1, the dissolved air water that enters filtering tank 1 bottom upwards flows and washes away the filtrate 7 of filtering tank 1 pars intermedia, dissolved air water is with the top of dirt separation to filtering tank 1, the top of filtering tank 1 is conical head 1-1, in the inside of conical head 1-1 dirt collecting bucket 1-2 is installed, the fixing sealing in dirt collecting bucket 1-2 Da Kou edge is connected on the inwall of conical head 1-1, form the dirty pond 1-3 of ring-type collection, reach the purpose that pollutant is assembled and overflowed fast fast, the end of backwash outlet pipe 1-5 is communicated with the dirty pond 1-3 of annular collection bottom, the other end of backwash outlet pipe 1-5 is connected by flowing water Valve 8-3 on the inlet of sewage recovery pond 2, and gas compressor 5 adopts SA120A type screw-rod air compressor.

The specific embodiment two: in conjunction with Fig. 2 present embodiment is described, the difference of the present embodiment and the specific embodiment one is that distribute water and air pipe 1-6 is vertically installed in filtering tank 1 bottom, water distribution uniformity gas distribution when realizing backwash.

Operation principle: when filtering tank 1 carries out backwash, 8-2 closes with the filtered water valve, again backwash inlet valve 8-1 and backwash flowing water Valve 8-2 are opened, earlier carry out backwash a few minutes with gas, the shearing force of promptly utilizing bubble to flow will be attached to the oil on filtrate 7 surfaces, suspension, pollutants such as polymer are peeled off, carry out backwash with dissolved air water then, dissolved air water is that water pump 4 is with pressurization in the water suction water pump 4 in the water pot 3, again water is injected gas-liquid evenly mixing device 6, gas compressor presses 5 with gas compression pressurization injection gas-liquid evenly mixing device 6, gas-liquid evenly mixing device 6 imports to filtering tank 1 bottom with even mixing of air water, the dissolved air water of pressurization flows to filtering tank 1 top, reach the purpose of washing away filtering tank 1 middle part filtrate 7, the oil that proportion is little, suspension, pollutants such as polymer carry and float to liquid level, reasonably dirt collecting bucket 1-2 structure is gathered the liquid level pollutant fast and is effectively overflowed, backwash outlet pipe 1-5 by filtering tank 1 top is discharged in the recovery pond 2, and heavy filtrate 7 still sinks in the jar, filtrate 7 can not run off, the final dirt separation that realizes is discharged, the purpose of filtrate 7 regeneration.

Claims

1, effluent filter automatic backwash blowdown apparatus is characterized in that it is made up of filtering tank (1), backwash water inlet pipe (1-4), backwash outlet pipe (1-5), sewage recovery pond (2), water pot (3), water pump (4), suction hose (4-1), outlet pipe (4-2), gas compressor (5), appendix (5-1), inlet valve (8-1), flowing water Valve (8-3) and gas-liquid evenly mixing device (6); One end of suction hose (4-1) is connected on the lower wall of water pot (3), the other end of suction hose (4-1) is connected on the inlet of water pump (4), the outlet pipe (4-2) of water pump (4) and the appendix (5-1) on the gas compressor (5) are connected on the arrival end of gas-liquid evenly mixing device (6), one end of backwash water inlet pipe (1-4) is connected in the outlet of gas-liquid evenly mixing device (6), the other end of backwash water inlet pipe (1-4) is connected on the distribute water and air pipe (1-6) that is communicated with filtering tank (1) bottom by inlet valve (8-1), the top of filtering tank (1) is conical head (1-1), in the inside of conical head (1-1) dirt collecting bucket (1-2) is installed, the fixing sealing in dirt collecting bucket (1-2) Da Kou edge is connected on the inwall of conical head (1-1), form the dirty pond (1-3) of ring-type collection, one end of backwash outlet pipe (1-5) is communicated with bottom, the annular dirty pond of collection (1-3), and the other end of backwash outlet pipe (1-5) is connected on the inlet of sewage recovery pond (2) by flowing water Valve (8-3).

2, effluent filter automatic backwash blowdown apparatus according to claim 1 is characterized in that distribute water and air pipe (1-6) is vertically installed in filtering tank (1) bottom.