CN2706463Y - Device for treating industrial waste water by chemical reaction and coagulating precipitation - Google Patents
Device for treating industrial waste water by chemical reaction and coagulating precipitation Download PDFInfo
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- CN2706463Y CN2706463Y CN 200420021261 CN200420021261U CN2706463Y CN 2706463 Y CN2706463 Y CN 2706463Y CN 200420021261 CN200420021261 CN 200420021261 CN 200420021261 U CN200420021261 U CN 200420021261U CN 2706463 Y CN2706463 Y CN 2706463Y
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- chemical reaction
- precipitation
- flocculation
- mixed cell
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Abstract
The device for treating industrial waste water by chemical reaction and coagulating precipitation of the utility model belongs to the technical field of industrial waste water treatment, comprising a chemical mixing reaction unit, a coagulation unit and a precipitation unit. The three processing units are arranged in an abducent spacial sequence, each unit being kept in a separate area to guarantee the excellent operation and avoid canal-connecting so that the chemical reaction, the mixing, the coagulation and the precipitation do not affect each other. In the precipitation unit, the flow pattern can be kept vertical or amplitude stream-oriented; in the chemical mixing reaction unit, a high stream turbulence intensity can be realized; in the coagulation unit, a moderate stream turbulence intensity and certain stream turbulence intensity gradient can be satisfied; in the precipitation unit, a low stream turbulence intensity can be achieved; in the coagulation unit, a mechanical stirring apparatus can be saved. The utility model effectively enhances the efficiency of chemical reaction and coagulating precipitation and the utilization ratio of space and area.
Description
Technical field
The utility model belongs to the technology for treating industrial waste water field, is specifically related to the device of a kind of chemical reaction, coagulate precipitation treatment industrial water.
Background technology
The coagulating sedimentation technology is applied to the earliest to water treatment field, and process object is a colloidal solid electronegative in the natural water body water.First processing unit is a mixing pit, and inorganic coagulant is (as Al
2(SO
4)
3Deng) at this former water-borne glue body is carried out compression double electric layer and absorption charge neutrality effect, the colloid unstability, the unstability colloid enters second processing unit reaction tank.In reaction tank, the colloid of unstability collides cohesion mutually, carries out adsorption bridging and net is caught under coagulating agent hydrolysate or the effect of polymer coagulant aids, finishes flocculation reaction, forms floc particle big, that settling property is good.In follow-up the 3rd processing unit settling tank, floc particle and water sepn are finished treating processes.Give in the water treatment, two processing units of flocculation reaction and precipitation are directly to link by the perforation tracery wall, rather than through pipe-line transportation, are shredded by violent current to avoid the solid flco after the flocculation reaction.So the settling tank behind the feedwater flocculation tank is generally rectangular sedimentation tank, to solve the connection problem of reaction tank and settling tank.
In the Industrial Wastewater Treatment, traditional coagulating sedimentation technology can not effectively be removed pollutent sometimes, and often chemical reaction and coagulating sedimentation technology will be combined (abbreviation chemical reaction, coagulation sedimentation method) could effectively remove pollutent.As surface active agent wastewater, need add CaO or Ca (OH)
2Make water-soluble linear alkylbenzene sulphonic acid (LAS) reaction generate water-fast linear alkyl benzene sulphonic acid calcium, but the firm water-fast linear alkyl benzene sulphonic acid calcium that forms, sedimentation function is good inadequately, need add coagulating agent (as: polymerize aluminum chloride, PAC), the organic polymer coagulant aids is (as polyacrylamide, PAM), form big floc particle then, well precipitated, removal effect.Simultaneously, coagulating agent and coagulant aids are also removed other suspension and colloid pollution thing in the surface active agent wastewater.As dyeing waste water, need add FeSO
4, in this process, need carry out acid-base neutralisation reaction (tart FeSO
4React with the dyeing waste water of alkalescence) and redox reaction (Fe
2+Become Fe
3+, lose electronics; In the dyeing waste water, destroyed the colour developing group thereby dye molecule obtains electronics, colourity reduces).And the Fe that forms
3+Hydrolysate, be good coagulating agent, macromolecular colloid material in the dyeing waste water is removed by coagulation, precipitation.Therefore, what trade effluent (mainly being surface active agent wastewater and dyeing waste water) handle to need is not traditional coagulation sedimentation method, but a kind of new chemical reaction, coagulation sedimentation method.Adapt therewith, in new reaction unit, it is all extremely important to carry out chemical reaction, coagulating sedimentation effectively.
It is less that trade effluent is generally handled the water yield, as handling with chemical reaction, coagulation sedimentation method, settling tank often can only select to be applicable to the vertical sedimentation basin of low discharge, and is big slightly as flow, also can consider to use width of cloth flow settling pond, be applicable to that the rectangular sedimentation tank of big flow is not generally then considered.
In traditional coagulating sedimentation system design, mix, flocculate, precipitate and in three reactors, carry out respectively, to satisfy of the requirement of these three reactors to different waterpower turbulence intensities.Under the situation of low discharge, only consider that both ignored the consideration to chemical reaction condition, the mixing pit volume is too little by traditional coagulating sedimentation system design, in flocculation basin, be difficult to cause the waterpower turbulence intensity gradient of suitable flocculation reaction again; Mixing pit, flocculation basin and vertical-flow (or width of cloth streaming) settling tank are difficult to spatially arrange that the pipe connection between them is very complicated, difficult, and investment is big, cost height, operational administrative trouble.As before traditional coagulating sedimentation system, increase a chemical reaction pond, only can improve the condition of chemical reaction, can not overcome under the low discharge situation, the defective of traditional coagulating sedimentation system, and increased cost.
Summary of the invention
The purpose of this utility model is to propose a kind of chemical reaction simple in structure, with low cost, the device of coagulate precipitation treatment industrial water.
A kind of chemical reaction that the utility model proposes, the device of coagulate precipitation treatment industrial water, form by chemical reaction, mixed cell 6, flocculation unit 5, precipitation unit 8, flocculation unit 5 is positioned at the periphery of chemical reaction, mixed cell 6, form narrow annular channel 4 between the outer wall of chemical reaction, mixed cell 6 and flocculation unit 5 inwalls, slit width determines that according to the current size young on the flocculation unit 5, the bottom is gradually wide, to reduce flow rate of water flow, precipitation unit 8 is positioned at the periphery of flocculation unit 5.Wherein, the bottom of chemical reaction, mixed cell 6 is provided with water inlet pipe 1, and inside is provided with stirring arm 2, is provided with ostium excurrens 3 around the middle and upper part; Be provided with shelves stream plate in the precipitation unit 8 below flocculation unit 5, the bottom following, precipitation unit 8 of shelves stream plate 7 is provided with shore pipe 10, and outside one side of precipitation unit 8 is provided with rising pipe 9; The top of flocculation unit 5 is provided with adding of filling coagulant aids and manages 12, and the top of chemical reaction, mixed cell 6 is provided with adding of filling chemical agent and coagulating agent and manages 11.
In the utility model, ostium excurrens 3 is uniformly distributed in apart from liquid level 15-20cm place, and the aperture is 10-20mm.
In the utility model, shelves stream plate 7 is positioned at the 5 following 20-30cm places apart from the flocculation unit, and its width is than the wide 16-30cm in bottom of flocculation unit 5.
In the utility model, chemical reaction, mixed cell can adopt mechanically mixing (as flat stirring) because volume is little; Cooperate whipping appts, chemical reaction, mixed cell adopt cylinder shape or square.
In the utility model, the flocculation unit occupies chemical reaction, mixed cell outside, can adopt cylinder shape or square, and diameter is greater than chemical reaction, mixed cell.
In the utility model, precipitation unit can adopt vertical sedimentation basin, and the hydraulic surface loading and the residence time and traditional settling tank are similar, and only the center cell territory is chemical reaction, mixed cell and flocculation unit, has saved water inlet pipe.For the bigger situation of flow, can adopt width of cloth flow settling pond.
The utility model working process is as follows:
Trade effluent enters the bottom of chemical reaction, mixed cell from water inlet pipe, under the effect of stirring arm with chemical agent and the coagulating agent short mix that add at specific pollutants, finish chemical reaction and elimination of colloid stability process, the residence time of mixing pit only is 1 minute to 5 minutes, and the G value is controlled at 200-700s
-1Then, flow out from a float circular hole of mixed cell top periphery, mix with coagulant aids etc., at this moment waste water still has the flow turbulence of certain intensity, under the effect of the hydrolysate of coagulating agent or coagulant aids, the product solid phase particles of chemical reaction and unstability colloid begin flocculation and grow up, and waste water flows to the unitary main body of flocculation from ring-like slit mouth, waste water is controlled at 10-20min in the unitary residence time of flocculation, and the G value is from 100-200s
-1Weaken to 10-40s
-1Flow velocity reduces gradually, and it is big to follow this process solid phase particles to continue ground junction, flows out the flocculation unit at last, flow into precipitation unit from shelves stream plate top, at this moment flow turbulence is very little, and the current lift velocity is little, the solid particulate of certain particle diameter is finished precipitation process in this and water sepn.
The utility model is combined into the incorporate device of a cover with chemical reaction, mixing, flocculation, four processes of precipitation, inner organic three processing units, i.e. chemical reaction mixed cell, flocculation unit, precipitation unit of being divided into.Chemical reaction, mixed cell comprise chemical reaction (as acid-base neutralisation reaction, redox reaction, replacement(metathesis)reaction etc.) and two processes of elimination of colloid stability (compression double electric layer, absorption charge neutrality).The flocculation unit is to take off colloid after steady to collide, carry out the process that adsorption bridging and net are caught mutually under coagulating agent and coagulant aids effect, is again chemical precipitation or reaction product---the place that solid particulate increases.
The utility model is placed on four processes, three processing units in the device, with three processing units abduction layer by layer on spatial arrangement, both the subdivision territory guaranteed each unitary function, do not need pipeline to connect again, do not damage chemical reaction, mixing, flocculation, sedimentation effect; Both guaranteed the flow pattern of the vertical-flow or width of cloth streaming of precipitation unit, satisfy chemical reaction, the high flow turbulence intensity of mixed cell need, the medium flow turbulence intensity of flocculation unit need again, and certain flow turbulence intensity gradient need be arranged, precipitation unit need be hanged down the requirement of flow turbulence intensity, also can save flocculation unit mechanical stirring device.Three unit become as a whole, have improved space availability ratio greatly, have reduced the head loss in the flow process, have also avoided in the pipe connection process destruction to flco.The utility model proposes chemical reaction, mixing, flocculation, four processes of precipitation in a kind of solution low discharge trade effluent chemical reaction, the coagulating sedimentation treatment scheme, three processing units are arranged difficult coupling, and difficulty is connected, thereby reduces the contradiction of treatment effect.
The utility model has the advantages that:
Strengthened the efficient of chemical reaction, coagulating sedimentation greatly, overcome Unit three and split the technology drawback that causes, after pipe-line transportation, shredded again as the particle after the flocculation; The flow turbulence intensity control of flocculation unit is complicated, is difficult to greatly reduce the efficient of solid-liquid separation etc. with successive.
Space availability ratio and area utilization have been improved greatly.On the flow process, chemical reaction and the machine of being mixed with are combined in same unit, have save independent chemical reaction units; Chemical reaction, the needed area of mixed cell and flocculation unit have almost been saved on the area; On the space, stacked mode has avoided the ginseng on three unit intervals and the elevation inferior uneven.
Often can save medicine dissolving tank there being solid chemicals to add under the situation of measuring apparatus.Chemical agent and coagulating agent at specific pollutants can directly be added to chemical reaction, mixed cell; The polymer coagulant aids is added in the ring-like slit of the unitary import of flocculation.The release position of medicament is comparatively concentrated, favourable maintaining.And save the unitary whipping appts of flocculation.
Can reduce investment outlay effectively, separate with Unit three to be provided with and compare, investment can be saved more than 40%; Can save operation energy consumption equally, separate with Unit three to be provided with and compare, energy consumption can be saved more than 30%.Table 1 has been enumerated the comparison of the utility model and traditional coagulating sedimentation reactor (Unit three are separated).
The comparison of table 1 the utility model and traditional coagulating sedimentation reactor (Unit three are separated)
Feature the utility model tradition coagulating sedimentation reactor
(Unit three are separated)
Floor space is saved 30% standard
Capital cost is saved 40% standard
40% standard is saved in investment
Energy consumption is saved 30% standard
Running cost is saved 30% standard
Operating Complexity is simply complicated
Settled chemical ingredients height is treated in removal
Remove suspended solids standard standard
Remove colloid standard standard
Description of drawings
Fig. 1 is a structural diagrams of the present utility model.
Fig. 2 is the diagram of overlooking of the present utility model.
Number in the figure: 1 is water inlet pipe, 2 is stirring arm, and 3 for chemical reaction, mixed cell circumferential edge go out to flow aperture, and 4 for entering the narrow annular channel of reaction member, 5 are the flocculation unit, 6 is chemical reaction, mixed cell, and 7 is shelves stream plate, and 8 is precipitation unit, 9 is the precipitation unit rising pipe, 10 is shore pipe, and 11 is the coagulant dosage pipe, and 12 add pipe for coagulant aids.
Embodiment
Advance explanation the utility model down below in conjunction with accompanying drawing, but be not limited to present embodiment.
Embodiment 1, adopts this Process for Treatment of Surfactant Production waste water, and the processing water yield is 50M
3/ d.Stirrer power selection 180W selects flat stirring arm.Water inlet pipe 1 diameter is 46mm, chemical reaction, mixed cell 6 diameters are 700mm, depth of water height is 700mm, going out to flow aperture 3 diameters is 15mm, and narrow annular channel 4 spacings are 100mm, and flocculation unit 5 depth of water height are 2460mm, exit diameter is 1100mm, the precipitation unit precipitation part depth of water (more than the shelves stream plate) highly is 2700mm, and upgrading unit (shelves stream plate is following) highly is 1400mm, and shelves stream plate width is 1300mm.Add lime powder 1000mg/L at mixed cell, poly-iron 400mg/L; Adding PAM in the reaction member import is 3mg/L.The effluent quality that reaches after the processing is COD 280mg/L, LAS 100mg/L; Processing efficiency is COD 85%, and LAS 82%; Reached pre-treatment requirement to this trade effluent.
Claims (4)
1, the device of a kind of chemical reaction, coagulate precipitation treatment industrial water, form by chemical reaction, mixed cell (6), flocculation unit (5), precipitation unit (8), the unit (5) that it is characterized in that flocculating is positioned at the periphery of chemical reaction, mixed cell (6), form narrow annular channel (4) between the outer wall of chemical reaction, mixed cell (6) and flocculation unit (5) inwall, flocculation unit (5) is gone up young, the bottom is gradually wide, and precipitation unit (8) is positioned at the periphery of flocculation unit (5); The bottom of chemical reaction, mixed cell (6) is provided with water inlet pipe (1), and inside is provided with stirring arm (2), is provided with ostium excurrens (3) around the middle and upper part; Be provided with shelves stream plate in the precipitation unit (8) below flocculation unit (5), the bottom following, precipitation unit (8) of shelves stream plates (7) is provided with shore pipe (10), and outside one side of precipitation unit (8) is provided with rising pipe (9); What the top of flocculation unit (5) was provided with the filling coagulant aids adds pipe (12), and what the top of chemical reaction, mixed cell 6 was provided with annotate chemical agent and coagulating agent adds pipe (11).
2, the device of chemical reaction according to claim 1, coagulate precipitation treatment industrial water is characterized in that said ostium excurrens (3) is uniformly distributed in apart from liquid level 15-20cm place, and the aperture is 10-20mm.
3, the device of chemical reaction according to claim 1, coagulate precipitation treatment industrial water is characterized in that said shelves stream plates (7) are positioned at the following 20-30cm place apart from flocculation unit (5), and its width is than the wide 16-30cm in bottom of flocculation unit (5).
4, the device of chemical reaction according to claim 1, coagulate precipitation treatment industrial water is characterized in that chemical reaction, mixed cell (5) are cylinder shape or square.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 200420021261 CN2706463Y (en) | 2004-03-25 | 2004-03-25 | Device for treating industrial waste water by chemical reaction and coagulating precipitation |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 200420021261 CN2706463Y (en) | 2004-03-25 | 2004-03-25 | Device for treating industrial waste water by chemical reaction and coagulating precipitation |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN2706463Y true CN2706463Y (en) | 2005-06-29 |
Family
ID=34849075
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN 200420021261 Expired - Fee Related CN2706463Y (en) | 2004-03-25 | 2004-03-25 | Device for treating industrial waste water by chemical reaction and coagulating precipitation |
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| Country | Link |
|---|---|
| CN (1) | CN2706463Y (en) |
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102351287A (en) * | 2011-08-31 | 2012-02-15 | 武汉理工大学 | Continuous multi-step flocculation water treatment method and device |
| CN105967243A (en) * | 2016-05-30 | 2016-09-28 | 芜湖富春染织有限公司 | Cheese dyeing wastewater adjusting tank |
| CN107285564A (en) * | 2017-07-14 | 2017-10-24 | 天津中天海盛环保科技有限公司 | A kind of wastewater treatment equipment |
| CN114573136A (en) * | 2022-01-18 | 2022-06-03 | 天津天智精细化工有限公司 | Electrostatic demisting and washing method for fatty alcohol ether sulfonated tail gas |
-
2004
- 2004-03-25 CN CN 200420021261 patent/CN2706463Y/en not_active Expired - Fee Related
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102351287A (en) * | 2011-08-31 | 2012-02-15 | 武汉理工大学 | Continuous multi-step flocculation water treatment method and device |
| CN105967243A (en) * | 2016-05-30 | 2016-09-28 | 芜湖富春染织有限公司 | Cheese dyeing wastewater adjusting tank |
| CN107285564A (en) * | 2017-07-14 | 2017-10-24 | 天津中天海盛环保科技有限公司 | A kind of wastewater treatment equipment |
| CN114573136A (en) * | 2022-01-18 | 2022-06-03 | 天津天智精细化工有限公司 | Electrostatic demisting and washing method for fatty alcohol ether sulfonated tail gas |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| 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: 20050629 |