CN2778391Y

CN2778391Y - Oil-containing waste water integrated processing machine set

Info

Publication number: CN2778391Y
Application number: CN 03248876
Authority: CN
Inventors: 王克春; 蔡友梅
Original assignee: Individual
Current assignee: Individual
Priority date: 2003-09-25
Filing date: 2003-09-25
Publication date: 2006-05-10
Anticipated expiration: 2013-09-25

Abstract

The utility model relates to an oil-containing waste water integrated processing machine set, which is a device for implementing the purification processing to the oil-containing waste water. The utility model is characterized in that the upper part of the machine set is provided with a vertical flow type flotation cell, the lower part is provided with a radial flow type filter, the vertical flow type flotation cell and the radial flow type filter are combined into a whole, and the machine set and an oil-water separating tank and a scum concentrating tank are formed into a floatation and filtering waste water processing unit. After the oil-containing waste water (the water inlet containing oil is less than or equal to 2000 mg/L, and the suspended substance is less than or equal to 500 mg/L) is processed, both the water outlet containing oil and the suspended substance are less than 10 mg/L. Compared with the conventional processes with the same processing ability, the utility model has the advantages of low investment, small occupation of land, low operation cost and convenient operation and management. The machine set can be used for other waste purification processing as required.

Description

Oily waste water integrated processing machine group

One, technical field

The utility model relates to a kind of device of oily waste water being implemented purified treatment in the environmental engineering.

Two, background technology

Oily waste water adopts at present extensively " oil removal+partial reflux pressure air-dissolving flotation+filter to the flow depth layer down " treatment process, and is big as oil interceptor, flotation tank floor space because the inherent shortcoming of this process unit, complex structure; The air supporting water outlet needs through promoting once more and could filtering; Filtrate backwash regeneration is intermittently carried out, and self-cleaning is not thorough, easily produces and hardens, and needs periodic replacement filtrate etc.Therefore, construction investment is big, and floor space is wide, the operating cost height, and the operational administrative difficulty, poor processing effect has become the common fault for this kind technology.

Three, summary of the invention

The purpose of this utility model is to provide a kind of construction investment to economize, and floor space is little, and operating cost is low, and operational administrative is easy, and the oily waste water integrated processing machine group that treatment effect is good (hereinafter to be referred as: unit), progressively replace existing oil-containing waste water treating device.Utility model is achieved in that unit top is vertical-flow floation tank, and the bottom is the radial-flow filter, and both join together; Floation tank is the non-pressure vessel that garden tube and garden awl are formed, interior branch contact chamber and separation chamber, and the top, separation chamber is covered with spill cavity for the awl bucket shape on it, in the floation tank outlet fluid level control valve is housed; The tank body of filter is the non-pressure vessel that garden tube and garden awl are formed, the water inlet screen casing is located at the tank body middle part, catchment screen casing near inner tank wall, filling filter material layer between screen casing, the backwashing water nozzle is located at tank base central authorities, central tube is equipped with in the top, and central tube goes out the disengagement chamber that mouth mask one is made up of garden tube and garden awl; The supporting composition flotation of unit and gun barrel and scum silica frost concentration tank+filtered wastewater processing unit.

With pending waste water pressurization, inject Compressed Gas simultaneously, give gas-liquid mixing, time-delay pressurize by gun barrel, make it to form dissolved air water by the saturated homogeneous phase solution of gas.Quite a few elaioleucite regularly enters the scum silica frost knockout drum by eddy flow and air supporting effect by the top relief valve in the interior waste water of jar, plays the effect identical with oil interceptor.The bottom water outlet enters the floation tank on unit top, is no more than the transport restrictions height for guaranteeing the floation tank external diameter, is designed to individual layer, bilayer or sandwich construction, a shared water inlet, scum silica frost mouth and delivery port according to the big I for the treatment of capacity; Join together with bottom continuous automatic backwash radial-flow filter.Because the air supporting delivery port is designed to greater than 1.5 meters with the discrepancy in elevation that filters out the mouth of a river, does not therefore need to promote once more, can finish filtration.The water inlet of unit, dissolved air flotation, oil spilling, slagging-off, filtration, filtrate backwash and the whole operational factors of water outlet can be implemented the operation continuously of control automatically by after setting.

Set structure is simply compact, and flow process is short, and the automaticity height adds that saving one-level promotes, compare with the common process of same treatment ability, reduced investment, take up an area of less, low, the convenient operation and management of operating cost.Owing to adopt vertical-flow flotation and radial-flow to filter, the stable GB8978-1996 composite wastewater discharge standard that reaches of oil in the waste water and suspended substance removal rate.

This unit also can be used for the purified treatment of other waste water as required.

Four, description of drawings

Fig. 1 is oily waste water integrated processing machine group overall arrangement figure:

The 1-water pump; The 2-air feed tank; The 3-gun barrel; 4-integrated processing machine group; 5-scum silica frost concentration tank.

Fig. 2 is integrated processing machine group (a 4) orthogonal view:

Floation tank under the 6-; The last floation tank of 7-; The 8-fluid level control valve; The 9-screen casing of intaking; The 10-filter material layer; The 11-screen casing that catchments; The 12-central tube; 13-backwashing water nozzle; The 14-disengagement chamber; The 15-tank body; A-floation tank contact chamber; B-floation tank separation chamber; The c-spill cavity.

Five, the specific embodiment

With oily waste water (water inlet oil-containing≤2000mg/L, suspension≤500mg/L) be pressurized to 0.3～0.5Mpa with water pump (1), inject Compressed Gas (air by air feed tank (2) simultaneously, nitrogen or oil gas) air pressure is greater than hydraulic pressure, tolerance is about 1% of the water yield, carry out the gas-liquid mixing by gun barrel (3), time-delay pressurize (time-delay 3～6min, pressurize 0.15～0.25Mpa), make it to form the homogeneous phase solution under the saturated dissolved gas state, isolated oil intermittently enters scum silica frost concentration tank (5) by the top relief valve in jar, the bottom water outlet is pressed into the vertical-flow floation tank on unit (4) top, current enter upflow velocity≤10mm/s of contact chamber a, enter upflow velocity≤2mm/s of the b of separation chamber, the time of staying 〉=10min; Scum silica frost regularly enters the scum silica frost concentration tank by top spill cavity c; (oil-containing＜40mg/l) enters bottom radial-flow filter tank body (15) import by fluid level control valve (8) gravity flow, and (bed thickness 〉=0.6m), the screen casing that catchments leach after (11) through water inlet screen casing (9), filter material layer (10) in water outlet.(flow is about 2% of the processing water yield by low-capacity pump in the filtrate backwash, pressure 0.15～0.25Mpa) constantly takes filtrate to top disengagement chamber (14) from the awl bucket bottom of tank body by nozzle (13) and central tube (12), the dirt of filtrate absorption transports in the process collision at current and washes away and separate come-up, discharge through overfall, filter back water outlet oil-containing and suspension are all less than 10mg/l.

Claims

1. oily waste water integrated processing machine group, it is characterized in that: unit top is vertical-flow floation tank, and the bottom is the radial-flow filter, and both join together; Floation tank is the non-pressure vessel that garden tube and garden awl are formed, interior branch contact chamber and separation chamber, and the top, separation chamber is covered with spill cavity for the awl bucket shape on it, and the floation tank delivery port is equipped with fluid level control valve; The tank body of filter is the non-pressure vessel that garden tube and garden awl are formed, the water inlet screen casing is located at the tank body middle part, catchment screen casing near inner tank wall, filling filter material layer between screen casing, the backwashing water nozzle is located at tank base central authorities, central tube is equipped with in the top, and central tube goes out the disengagement chamber that mouth mask one is made up of garden tube and garden awl; The supporting composition flotation of unit and gun barrel and scum silica frost concentration tank+filtered wastewater processing unit.

2. oily waste water integrated processing machine group as claimed in claim 1 is characterized in that: unit top floation tank can be individual layer, bilayer or sandwich construction, a shared water inlet, scum silica frost mouth and delivery port.