CN202089848U - Efficient film treating device for chromium-containing waste water - Google Patents
Efficient film treating device for chromium-containing waste water Download PDFInfo
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- CN202089848U CN202089848U CN2011201277761U CN201120127776U CN202089848U CN 202089848 U CN202089848 U CN 202089848U CN 2011201277761 U CN2011201277761 U CN 2011201277761U CN 201120127776 U CN201120127776 U CN 201120127776U CN 202089848 U CN202089848 U CN 202089848U
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Abstract
The utility model relates to an efficient film treating device for chromium-containing waste water. The efficient film treating device comprises a material supply groove, a film component, a circulation tank, a circulation pipe and a plate-and-frame filter press, wherein the film component is communicated with the material supply groove through a material supply pipe and the circulation pump, and is provided with a permeation liquid conveying pipe; the circulation tank is communicated with the film component through a concentrated liquid conveying pipe; the circulation pipe with a circulation material supply valve passes through the space between the lower part of the circulation tank and the material supply pipe; the filtrate outlet of the plate-and-frame filter press is formed above the material supply groove; the side wall of the circulation tank is provided with a circulation overflow port; the circulation overflow port is formed above a settling pond, and is connected with one end of an overflow pipe; and the other end of the overflow pipe leads into the settling pond. The efficient film treating device has the advantages of stable and reliable running and greatly increased treating efficiency; and the turbidity of the chromium-containing waste water which is allowed to be treated by the system is up to 20,000 ppm in maximum.
Description
Technical field
The utility model belongs to the heavy metal containing wastewater treatment technical field, is specifically related to a kind of chromate waste water high performance membrane treatment unit.
Background technology
Chromate waste water is mainly derived to be electroplated and tanning industry, is a class sewage.The composition of electroplating wastewater is very complicated, and except that containing cyanogen (CN-) waste water and acidic and alkaline waste water, heavy metal wastewater thereby is to electroplate the great waste water classification of industry potential hazard.Commonly used tank liquor is behind life-time service or accumulated many other metal ions in the electroplating activity, or because the destruction of some additive, or some effective constituent is out of proportion etc. former thereby influence the quality of coating or passivation layer.Therefore many factories for the impurity in these tank liquors of control in the scope of technology permission, with the discarded part of tank liquor, replenish new soln, the factory that also has all discards the tank liquor of these inefficacies.The general concentration of heavy metal ion of the various concentration liquid of these depleted is all very high, the impurity of accumulation is also a lot, the not only kind difference of pollutent, and the concentration of principal pollutant, other metallic impurity ionic concentration and solution medium also all often have bigger difference.These differences have determined diversity and the technologic singularity on the treatment technology of these waste water, use absorption method, biochemical process, chemistry and the processing electroplating wastewater such as send out and all be difficult to obtain the ideal effect.
Membrane technique is used to just demonstrate extremely strong competitive power after the processing waste water containing chrome, have the membrane module floor space little, reclaim wastewater quality better, during works better not chemical agent consumption do not produce new advantages such as pollutent yet.Fig. 1 is the structural representation of existing chromate waste water treatment unit, the conventional process technology of existing domestic use mainly is: adjusting, reaction, precipitation, coagulating sedimentation, sloping plate deposition, mud concentrate, press filtration filtration etc., equalizing tank, reaction tank, precipitation are set and add flocculation agent coagulative precipitation tank, inclined-plate clarifying basin, sludge thickener and press filtration filtration unit such as plate-and-frame filter press.Mainly there is following problem in these conventional process technology: processing cost height, complex process, complex operation and treatment time are long, occupation area of equipment is big, the chemical cost amount is big, the easy low temperature of coagulating agent lost efficacy, serviceability is not good, and because present filter type can't thoroughly be removed biological floe and colloidalmaterial and oil in water emulsion, effluent quality is poor, purity is not high, and cleaning operation is frequent, has increased working strength of workers and processing cost.
Summary of the invention
The purpose of this utility model is to overcome the deficiencies in the prior art and provides that a kind of processing efficiency height, floor space are little, the chromate waste water high performance membrane treatment unit of save energy.
For achieving the above object, the technical scheme that the utility model adopted is: comprise charging tank, the membrane module that has the penetrating fluid transfer lime that is connected by feeder sleeve and recycle pump and charging tank, the circulation tank that is connected by dope transfer lime and membrane module, the circulation tube that has the feeding cycle valve that between circulation tank bottom and feeder sleeve, connects, filtrate outlet is in the plate-and-frame filter press of charging tank top, it is characterized in that: on the sidewall of circulation tank, have the circulation overflow port, this circulation overflow port is in the top of settling tank, be connected with an end of upflow tube on this circulation overflow port, the other end of this upflow tube feeds settling tank.
Be provided with sewage draining exit in the charging tank bottom.
Recycle pump is installed on one section feeder sleeve between circulation tube and the membrane module, and one section feeder sleeve between circulation tube and the charging tank is provided with inlet valve.
Also be provided with reaction tank in the settling tank front, also be provided with equalizing tank in the reaction tank front, adopt transport pipe and pump to be connected between them, chromate waste water at first passes through pre-pre-treatment, be introduced into equalizing tank, enter reaction tank, enter settling tank again, post precipitation enters chromate waste water high performance membrane treatment unit, waste water flows in the charging tank after being driven into the plate-and-frame filter press press filtration earlier, carries out membrane filtration after feeder sleeve enters membrane module, filters the penetrating fluid of gained and delivers to given place by the penetrating fluid transfer lime, dope is recycled to circulation tank by the dope transfer lime, by the circulation overflow port concentrated solution in the circulation tank is flow to the settling tank from upflow tube.
Described membrane module is the inner pressed ultra-filtration membrane, and its operation scheme is the cross-flow mode.
The utility model adopts the cross-flow mode of operation on the basis of existing membrane filter appts, and has additional the circulation upflow tube, makes it keep certain circulation spillway discharge by the control inlet valve.By the circulation overflow port concentrated solution in the circulation tank is flow to the settling tank from upflow tube, because the waste liquid in the circulation tank is through constantly circulation, concentration is more and more higher, overflow is to settling tank, and concentrated solution is equivalent to sedimentary crystal seed, can impel precipitate, accelerate crystallization, significantly reduce the chromium hydroxide crystalline curing time, make the better press filtration of pressure filter go out body refuse in the short period of time, thereby guarantee effluent quality.On the other hand, system is provided with overflow port, recycling waste water concentration in the reduction system greatly, and the control liquid waste concentration fluctuates in a small range, thus controlling diaphragm pollutes effectively, reduces cleaning frequency, improves film work-ing life greatly, improves running efficiency of system.Therefore adopt device processing waste water containing chrome of the present utility model, have the advantage that stable and reliable operation, processing efficiency promote greatly, this system allows the turbidity of processing waste water containing chrome to reach as high as 20000ppm.In addition, circulation tank has also played the effect of accumulation of heat, and behind membrane filtration, the dope temperature generally can rise to 40-60 ℃; This part thermal storage fluid is stored in the circulation tank, and as required by circulation tube delivery film assembly, like this then need not the waste water of delivery film assembly is heated in advance.Inlet valve can be used for regulating the internal circulating load of the feed liquid of delivery film assembly, can either reach the purpose of control feed temperature, again can the Control Circulation jar in the dope amount of overflowing from overflow port.
Description of drawings
Fig. 1 is the structural representation of existing chromate waste water treatment unit.
Fig. 2 is a structural representation of the present utility model.
Embodiment
The efficient treatment unit of chromate waste water as shown in Figure 2, comprise charging tank 1, the membrane module that has penetrating fluid transfer lime 43 that is connected by feeder sleeve 5 and recycle pump 6 and charging tank 1, the circulation tank 9 that is connected by dope transfer lime 8 and membrane module 3, the circulation tube that has the feeding cycle valve 13 that between circulation tank 9 bottoms and feeder sleeve 5, connects, filtrate outlet is in the plate-and-frame filter press 2 of charging tank 1 top, on the sidewall of circulation tank 9, have circulation overflow port 10, this circulation overflow port 10 is in the top of settling tank 14, be connected with an end of upflow tube 11 on this circulation overflow port 10, the other end of this upflow tube 11 feeds settling tank 14.Be provided with sewage draining exit 12 in charging tank 1 bottom.Recycle pump 6 is installed on one section feeder sleeve 5 between circulation tube 13 and the membrane module 3, and one section feeder sleeve 5 between circulation tube 13 and the charging tank 1 is provided with inlet valve 7.Also be provided with reaction tank 15 in settling tank 14 fronts, also be provided with equalizing tank 16 in reaction tank 15 fronts, adopt transport pipe and pump to be connected between them, chromate waste water at first passes through pre-pre-treatment, be introduced into equalizing tank, enter reaction tank, enter settling tank again, post precipitation enters chromate waste water high performance membrane treatment unit, waste water flows in the charging tank 1 after being driven into plate-and-frame filter press 2 press filtrations earlier, after entering membrane module 3, feeder sleeve 5 carries out membrane filtration, filter the penetrating fluid of gained and deliver to given place by penetrating fluid transfer lime 4, dope is recycled to circulation tank 9 by dope transfer lime 8, by circulation overflow port 10 concentrated solution in the circulation tank 9 is flow to the settling tank 14 from upflow tube 11.
Chromate waste water at first passes through pre-pre-treatment, is introduced into equalizing tank, enters reaction tank, enters settling tank again, and post precipitation enters the efficient treatment unit of chromate waste water.Waste water flows in the charging tank 1 after squeezing into the pressure filter press filtration earlier, carries out membrane filtration after feeder sleeve 5 enters membrane module 3.Filter the penetrating fluid of gained and deliver to given place by penetrating fluid transfer lime 4, dope is recycled to circulation tank 9 by dope transfer lime 8.By circulation overflow port 10 concentrated solution in the circulation tank is flow to the settling tank from upflow tube 11, because the waste liquid in the circulation tank is through constantly circulation, concentration is more and more higher, and overflow is to settling tank, and concentrated solution then can be described as sedimentary a kind of crystal seed, can impel precipitate, accelerate crystallisation reduces the chromium hydroxide curing time, just can give full play to the effect of pressure filter 2 since like this, make the better press filtration of pressure filter go out body refuse, thereby guarantee effluent quality.On the other hand, system is provided with overflow port 10, recycling waste water concentration in the reduction system greatly, thus reduce the pollution frequency of film effectively, improve film work-ing life greatly, improve running efficiency of system.For fear of splash, described overflow port is connected with upflow tube, and the upflow tube the other end feeds settling tank.For throw out in the collecting precipitation pond, described charging tank top is provided with pressure filter, and the charging tank bottom is provided with sewage draining exit, so that periodic cleaning is deposited on the dirt of charging tank bottom.Described inner pressed ultra-filtration membrane is ceramic membrane or organic membrane.
Claims (5)
1. chromate waste water high performance membrane treatment unit, comprise charging tank (1), the membrane module that has penetrating fluid transfer lime (4) (3) that is connected by feeder sleeve (5) and recycle pump (6) and charging tank (1), the circulation tank (9) that is connected by dope transfer lime (8) and membrane module (3), the circulation tube that has the feeding cycle valve (13) that between circulation tank (9) bottom and feeder sleeve (5), connects, filtrate outlet is in the plate-and-frame filter press (2) of charging tank (1) top, it is characterized in that: on the sidewall of circulation tank (9), have circulation overflow port (10), this circulation overflow port (10) is in the top of settling tank (14), on this circulation overflow port (10), be connected with an end of upflow tube (11), the other end of this upflow tube (11) feeds settling tank (14), is provided with sewage draining exit (12) in charging tank (1) bottom.
2. chromate waste water high performance membrane treatment unit according to claim 1, it is characterized in that: recycle pump (6) is installed on one section feeder sleeve (5) between circulation tube (13) and the membrane module (3), and the one section feeder sleeve (5) between circulation tube (13) and the charging tank (1) is provided with inlet valve (7).
3. chromate waste water high performance membrane treatment unit according to claim 1, it is characterized in that: also be provided with reaction tank (15) in settling tank (14) front, also be provided with equalizing tank (16) in reaction tank (15) front, adopt transport pipe and pump to be connected between them.
4. chromate waste water high performance membrane treatment unit according to claim 1 is characterized in that: described membrane module (3) is the inner pressed ultra-filtration membrane, and its operation scheme is the cross-flow mode.
5. chromate waste water high performance membrane treatment unit according to claim 4 is characterized in that: described inner pressed ultra-filtration membrane is ceramic membrane or organic membrane.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2011201277761U CN202089848U (en) | 2011-04-27 | 2011-04-27 | Efficient film treating device for chromium-containing waste water |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2011201277761U CN202089848U (en) | 2011-04-27 | 2011-04-27 | Efficient film treating device for chromium-containing waste water |
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| Publication Number | Publication Date |
|---|---|
| CN202089848U true CN202089848U (en) | 2011-12-28 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN2011201277761U Expired - Fee Related CN202089848U (en) | 2011-04-27 | 2011-04-27 | Efficient film treating device for chromium-containing waste water |
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| CN (1) | CN202089848U (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102153218A (en) * | 2011-04-27 | 2011-08-17 | 郑州银科尔科技有限公司 | Device and process for treating chromate waste water |
-
2011
- 2011-04-27 CN CN2011201277761U patent/CN202089848U/en not_active Expired - Fee Related
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102153218A (en) * | 2011-04-27 | 2011-08-17 | 郑州银科尔科技有限公司 | Device and process for treating chromate waste water |
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| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| C17 | Cessation of patent right | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20111228 Termination date: 20130427 |