CN104671614B - A kind of phosphorous treatment method of printing and dying wastewater and device - Google Patents
A kind of phosphorous treatment method of printing and dying wastewater and device Download PDFInfo
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- CN104671614B CN104671614B CN201510096021.2A CN201510096021A CN104671614B CN 104671614 B CN104671614 B CN 104671614B CN 201510096021 A CN201510096021 A CN 201510096021A CN 104671614 B CN104671614 B CN 104671614B
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Abstract
The present invention relates to a kind of phosphorous treatment method of printing and dying wastewater and device, comprise wastewater equalization pond, decolouring dephosphorization pond, anoxic anaerobic reation pool, biochemical contact tank, second pond; Decolouring dephosphorization pond comprises mix and blend district and settling region, and anoxic anaerobic reation pool comprises the double oxygen section, anoxic section and the anaerobism section that are separated into by traverse baffle; Biochemical contact tank is provided with water inlet pipe, water distribution pyrometric cone, filler and aeration regulator control system; Waste water through equalizing tank regulating pondage and water quality, then enter decolouring dephosphorization pond, then enter anoxic anaerobic reation pool, biochemical contact tank carries out anoxic, anaerobic and aerobic reaction, qualified discharge after precipitation.
Description
Technical field
The present invention relates to technical field of waste water processing, be specifically related to a kind of phosphorous treatment method of printing and dying wastewater and device.
Background technology
Dyeing is the discharge rich and influential family of trade effluent, there is in dyeing waste water the features such as colourity is high, salts contg is high, complicated, biodegradability are poor, decolouring is difficult, be difficult to adopt conventional method to administer, use tensio-active agent to cause the concentration of phosphorus in dyeing waste water higher in dyeing and finishing process, phosphorous dyeing waste water becomes a difficult problem for Industrial Wastewater Treatment simultaneously.
In traditional printing-dyeing waste water treatment process, colourity, BOD
5, COD, SS, N-NH
3, these indexs of TN all can reach state quota, but total phosphorus does not usually reach emission standard, and the treatment technology therefore probing into phosphorous dyeing waste water has important practical significance.
Summary of the invention
The technical problem to be solved in the present invention is: in order to solve the difficult problem in above-mentioned phosphorous treatment of dyeing wastewater, the invention provides a kind of phosphorous treatment method of printing and dying wastewater and device.
The technical solution adopted for the present invention to solve the technical problems is: a kind of phosphorous treatment method of printing and dying wastewater and device, comprises wastewater equalization pond, decolouring dephosphorization pond, anoxic anaerobic reation pool, biochemical contact tank, second pond; Described wastewater equalization pond, decolouring dephosphorization pond, anoxic anaerobic reation pool, biochemical contact tank, second pond are communicated with successively.
Described wastewater equalization pond comprises wastewater equalization pond water inlet pipe, pH value TT&C system and rising pipe, for regulating the pH value of phosphorous dyeing waste water, water quality and the water yield.
Described decolouring dephosphorization pond comprises mix and blend district and settling region, and be provided with decolouring dephosphorization pond water inlet pipe bottom mix and blend district, middle and upper part is provided with the liquid add-on system for adding decolouring dephosphorization agent, in the middle part of stirring area, be provided with whipping appts; Baffle plate is provided with in described settling region, this baffle plate forms with the inwall in decolouring dephosphorization pond the waste water runner entering settling region as waste water, the exit of settling region is provided with triphase separator, the outlet top of settling region is provided with overfalling weir, the tapered structure of settling region bottom design, is provided with sediment discharge valve bottom settling region.
Described anoxic anaerobic reation pool comprises the double oxygen section, anoxic section and the anaerobism section that are separated into by traverse baffle, described double oxygen section head end is provided with the anoxic anaerobic reation pool water inlet pipe for feeding waste water, oxygen section end of holding concurrently is communicated with anoxic section head end, anoxic section end is communicated with anaerobism section head end, the bottom of described anoxic section and anaerobism section water inlet side traverse baffle is provided with the corner of 45 degree, the shock action produced when entering to avoid current, thus the effect playing buffering current and water distribution uniformity; Anaerobism section end is provided with triphase separator and overfalling weir, and overfalling weir connects rising pipe; Described double oxygen section, anoxic section and the tapered structure of anaerobism section bottom design, pyramidal structure connects mud discharging valve; The double oxygen section of described anoxic anaerobic reation pool, anoxic section and anaerobism section upper cover design coning structure, conical structure top is all provided with independently methane waste product effuser.
In described biochemical contact tank, middle and lower part is provided with biochemical contact tank water inlet pipe, and described biochemical contact tank water inlet pipe bottom is provided with water distribution pyrometric cone; Described water distribution pyrometric cone bottom is provided with aeration regulator control system, and described aeration regulator control system comprises aeration plate, gas blower and dissolved oxygen sensing regulation device; Further, described aeration plate is the pore type aeration plate being evenly provided with micropore.Described aeration plate connects gas blower by aeration tube, and gas blower is arranged on outside biochemical contact tank, and top, the waste water underwater of biochemical contact tank arrange dissolved oxygen sensing regulation device, and described dissolved oxygen sensing regulation device is according to the work of oxygen capacity regulation and control gas blower; Described biochemical contact tank water inlet pipe top is built-in with filler; The exit of described biochemical contact tank is laid with overflow weir.
The rising pipe of described biochemical contact tank connects second pond, and be provided with sludge recirculation system bottom second pond, a part of sludge reflux is to biochemical contact tank.
Water after sedimentation in secondary sedimentation tank process qualified discharge after overflow weir.
Described decolouring dephosphorization agent by diatomite, gac, wilkinite, molysite, calcium sulfate, Tai-Ace S 150, organic floculant in mass ratio 50:20:50:45:40:30:5 be mixed.
Adopt above-mentioned phosphorous printing and dyeing wastewater processing equipment to carry out a method for wastewater treatment, there are following steps:
1. phosphorous dyeing waste water enters wastewater equalization pond by wastewater equalization pond water inlet pipe and regulates the pH value of waste water, water quality and the water yield.
2. the water after regulating enters decolouring dephosphorization pond by the decolouring dephosphorization pond water inlet pipe bottom decolouring mix and blend district, dephosphorization pond, mixes with the decolouring dephosphorization agent from liquid add-on system, utilizes the whipping appts be arranged in the middle part of stirring area to stir; Decolouring dephosphorization agent removes the colourity of waste water and a certain amount of phosphorus by effects such as coagulation, precipitation and absorption, and then waste water enters the waste water runner of settling region, and the triphase separator of settling region realizes mud-water separation.
3. mud sinks to the bottom of decolouring settling region, dephosphorization pond under gravity, is discharged by the sediment discharge valve of bottom.Waste water is communicated with the water inlet pipe of anoxic anaerobic reation pool by overfalling weir, rising pipe with pipe connecting.
4. waste water enters the bottom of anoxic anaerobic reation pool by the hold concurrently anoxic anaerobic reation pool water inlet pipe of oxygen section of anoxic anaerobic reation pool; Waste water advances up and down along traverse baffle after entering anoxic anaerobic reation pool, successively by the Sludge Bed of each reaction chamber of hold concurrently oxygen section, anoxic section and anaerobism section, mud in reaction tank moves along with the upper current downflow of waste water and the effect of biogas rising, the settlement action of the barrier effect of traverse baffle and mud self makes again the flow velocity of mud reduce, therefore a large amount of mud is all trapped within reaction tank, and the microorganism in reaction tank fully contacts with the organism in waste water.Hydrolysis of organic matter in waste water is organic acid by the heterotrophic bacterium of the amphimicrobe of oxygen section, anoxic section and the anaerobism section held concurrently, and make larger molecular organics be decomposed into small organic molecule, insoluble organism changes into dissolved organic matter.
5. the waste water after anaerobic reaction realizes the separation of mud, water, methane gas at the triphase separator that anaerobism section end is provided with, and mud sinks to the bottom of anoxic anaerobic reation pool under gravity, and unnecessary mud is discharged by the mud discharging valve of bottom.The methane waste product that anoxic anaerobic reation pool produces collects discharge by reaction tank top effuser.Waste water is communicated with the water inlet pipe of biochemical contact tank by overfalling weir, rising pipe and pipe connecting.
6. waste water enters the middle and lower part of biochemical contact tank by biochemical contact tank water inlet pipe, water distribution uniformity under the effect of water distribution pyrometric cone, described aeration plate is the pore type aeration plate being evenly provided with micropore, produce a large amount of microbubbles, described dissolved oxygen sensing regulation device is according to the work of oxygen capacity regulation and control gas blower, guarantee that the dissolved oxygen in biochemical contact tank water is greater than 2mg/L, the waste water after process is flowed out by overflow weir and rising pipe.
7. the rising pipe of biochemical contact tank connects the water distributor of second pond, and a precipitating sludge part for second pond is back to biochemical contact tank, and a part is as excess sludge.
8. the water qualified discharge after overflow weir after sedimentation in secondary sedimentation tank process.
9. transport outward after the excess sludge dehydration that decolouring dephosphorization pond, anoxic anaerobic reation pool, biochemical contact tank and second pond produce.
The invention has the beneficial effects as follows: structure of the present invention is simple, and manufacturing cost is lower, has reasonable depth effect, convenient management to phosphorous treatment of dyeing wastewater.
Accompanying drawing explanation
Below in conjunction with drawings and Examples, the present invention is further described.
Fig. 1 is the structural representation in embodiment of the present invention decolouring dephosphorization pond.
In Fig. 1: 1. dephosphorization pond of decolouring, 1-1. mix and blend district, 1-2. settling region, 1-3. decolouring dephosphorization pond water inlet pipe, 1-4. liquid add-on system, 1-5. whipping appts, 1-6. baffle plate, 1-7. triphase separator, 1-8. overfalling weir, 1-9. sediment discharge valve.
Fig. 2 is the structural representation of embodiment of the present invention anoxic anaerobic reation pool.
In Fig. 2: 2. anoxic anaerobic reation pool, 2-1. traverse baffle, 2-2. holds concurrently oxygen section, 2-3. anoxic section, 2-4. anaerobism section, 2-5. anoxic anaerobic reation pool water inlet pipe, 2-6. anoxic anaerobic reation pool triphase separator, 2-7. anoxic anaerobic reation pool overfalling weir, 2-8. mud discharging valve, 2-9. upper cover, 2-10. effuser.
Fig. 3 is the structural representation of the biochemical contact tank of the embodiment of the present invention.
In Fig. 3: 3. biochemical contact tank, the biochemical contact tank water inlet pipe of 3-1., 3-2. water distribution pyrometric cone, 3-3. aeration regulator control system, 3-4. filler, 3-5. overflow weir.
Fig. 4 is the process flow sheet of the embodiment of the present invention.
Embodiment
In conjunction with the accompanying drawings, the present invention is further detailed explanation.These accompanying drawings are the schematic diagram of simplification, only basic structure of the present invention are described in a schematic way, and therefore it only shows the formation relevant with the present invention.
As shown in Figure 1 to 4, a kind of phosphorous treatment method of printing and dying wastewater of the present invention and device, comprise wastewater equalization pond, decolouring dephosphorization pond 1, anoxic anaerobic reation pool 2, biochemical contact tank 3, second pond; Described wastewater equalization pond, decolouring dephosphorization pond 1, anoxic anaerobic reation pool 2, biochemical contact tank 3, second pond are communicated with successively.
Described wastewater equalization pond comprises wastewater equalization pond water inlet pipe, pH value TT&C system and rising pipe, for regulating the pH value of phosphorous dyeing waste water, water quality and the water yield.
Described decolouring dephosphorization pond 1 comprises mix and blend district 1-1 and settling region 1-2, decolouring dephosphorization pond water inlet pipe 1-3 is provided with bottom mix and blend district, middle and upper part is provided with the liquid add-on system 1-4 for adding decolouring dephosphorization agent, is provided with whipping appts 1-5 in the middle part of stirring area; Baffle plate 1-6 is provided with in described settling region, this baffle plate forms with the inwall in decolouring dephosphorization pond the waste water runner entering settling region as waste water, the exit of settling region is provided with triphase separator 1-7, the outlet top of settling region is provided with overfalling weir 1-8, the tapered structure of settling region bottom design, is provided with sediment discharge valve 1-9 bottom settling region.
Described anoxic anaerobic reation pool 2 comprises the double oxygen section 2-2, anoxic section 2-3 and the anaerobism section 2-4 that are separated into by traverse baffle 2-1, described double oxygen section 2-2 head end is provided with the anoxic anaerobic reation pool water inlet pipe 2-5 for feeding waste water, oxygen section 2-2 end of holding concurrently is communicated with anoxic section 2-3 head end, anoxic section 2-3 end is communicated with anaerobism section 2-4 head end, the bottom of described anoxic section 2-3 and anaerobism section 2-4 water inlet side traverse baffle is provided with the corner of 45 degree, the shock action produced when entering to avoid current, thus the effect playing buffering current and water distribution uniformity; Anaerobism section 2-4 end is provided with triphase separator 2-6 and overfalling weir 2-7, and overfalling weir 2-7 connects rising pipe; Described double oxygen section 2-2, anoxic section 2-3 and the tapered structure of anaerobism section 2-4 bottom design, pyramidal structure connects mud discharging valve 2-8; The upper cover 2-9 of the double oxygen section of described anoxic anaerobic reation pool, anoxic section and anaerobism section is designed to conical structure, and conical structure top is all provided with independently methane waste product effuser 2-10.
In described biochemical contact tank 3, middle and lower part is provided with biochemical contact tank water inlet pipe 3-1, and described biochemical contact tank water inlet pipe 3-1 bottom is provided with water distribution pyrometric cone 3-2; Described water distribution pyrometric cone 3-2 bottom is provided with aeration regulator control system 3-3, and described aeration regulator control system 3-3 comprises aeration plate, gas blower and dissolved oxygen sensing regulation device; Further, described aeration plate is the pore type aeration plate being evenly provided with micropore.Described aeration plate connects gas blower by aeration tube, and gas blower is arranged on outside biochemical contact tank, and top, the waste water underwater of biochemical contact tank arrange dissolved oxygen sensing regulation device, and described dissolved oxygen sensing regulation device is according to the work of oxygen capacity regulation and control gas blower; Described water inlet pipe top is built-in with filler 3-4; The exit of described biochemical contact tank is laid with overflow weir 3-5.
The rising pipe of described biochemical contact tank connects second pond, and be provided with sludge recirculation system bottom second pond, a part of sludge reflux is to biochemical contact tank.
Water after sedimentation in secondary sedimentation tank process qualified discharge after overflow weir.
Described decolouring dephosphorization agent by diatomite, gac, wilkinite, molysite, calcium sulfate, Tai-Ace S 150, organic floculant in mass ratio 50:20:50:45:40:30:5 be mixed.
Adopt above-mentioned phosphorous printing and dyeing wastewater processing equipment to carry out a method for wastewater treatment, there are following steps:
1. phosphorous dyeing waste water enters wastewater equalization pond by wastewater equalization pond water inlet pipe and regulates the pH value of waste water, water quality and the water yield.
2. the water after regulating enters decolouring dephosphorization pond 1 by the decolouring dephosphorization pond water inlet pipe 1-3 bottom decolouring mix and blend district, dephosphorization pond 1-1, mix with the decolouring dephosphorization agent from liquid add-on system 1-4, utilize the whipping appts 1-5 be arranged in the middle part of stirring area to stir; Decolouring dephosphorization agent removes the colourity of waste water and a certain amount of phosphorus by effects such as coagulation, precipitation and absorption, and then waste water enters the waste water runner of settling region 1-2, and the triphase separator 1-7 of settling region realizes mud-water separation.
3. mud sinks to the bottom of decolouring dephosphorization pond settling region 1-2 under gravity, is discharged by the sediment discharge valve 1-9 of bottom.Waste water is communicated with the anoxic anaerobic reation pool water inlet pipe 2-5 of anoxic anaerobic reation pool 2 by overfalling weir 1-8, rising pipe with pipe connecting.
4. waste water enters the bottom of anoxic anaerobic reation pool 2 by the hold concurrently anoxic anaerobic reation pool water inlet pipe 2-5 of oxygen section 2-2 of anoxic anaerobic reation pool; Advance up and down along traverse baffle 2-1 after waste water enters anoxic anaerobic reation pool, successively by the Sludge Bed of each reaction chamber of hold concurrently oxygen section 2-2, anoxic section 2-3 and anaerobism section 2-4, mud in reaction tank moves along with the upper current downflow of waste water and the effect of biogas rising, the settlement action of the barrier effect of traverse baffle 2-1 and mud self makes again the flow velocity of mud reduce, therefore a large amount of mud is all trapped within reaction tank, and the microorganism in reaction tank fully contacts with the organism in waste water.Hydrolysis of organic matter in waste water is organic acid by the double amphimicrobe of oxygen section 2-2, the heterotrophic bacterium of anoxic section 2-3 and anaerobism section 2-4, and make larger molecular organics be decomposed into small organic molecule, insoluble organism changes into dissolved organic matter.
5. the waste water after anaerobic reaction realizes the separation of mud, water, methane gas at the triphase separator 2-6 that anaerobism section 2-4 end is provided with, mud sinks to the bottom of anoxic anaerobic reation pool under gravity, and unnecessary mud is discharged by the mud discharging valve 2-8 of bottom.The methane waste product that anoxic anaerobic reation pool produces collects discharge by the effuser 2-10 at reaction tank top.Waste water is communicated with the biochemical contact tank water inlet pipe of biochemical contact tank 3 by overfalling weir, rising pipe and pipe connecting.
6. waste water enters the middle and lower part of biochemical contact tank 3 by biochemical contact tank water inlet pipe 3-1, water distribution uniformity under the effect of water distribution pyrometric cone 3-2, described aeration plate is the pore type aeration plate being evenly provided with micropore, produce a large amount of microbubbles, described dissolved oxygen sensing regulation device is according to the work of oxygen capacity regulation and control gas blower, guarantee that the dissolved oxygen in biochemical contact tank water is greater than 2mg/L, the waste water after process is flowed out by overflow weir 3-5 and rising pipe.
7. the rising pipe of biochemical contact tank 3 connects the water distributor of second pond, and a precipitating sludge part for second pond is back to biochemical contact tank, and a part is as excess sludge.
8. the qualified discharge after second pond overflow weir of the water after sedimentation in secondary sedimentation tank process.
9. transport outward after the excess sludge dehydration that decolouring dephosphorization pond 1, anoxic anaerobic reation pool 2, biochemical contact tank 3 and second pond produce.
With above-mentioned according to desirable embodiment of the present invention for enlightenment, by above-mentioned description, relevant staff can carry out various change and amendment completely in the scope not departing from this invention technological thought.The technical scope of this invention is not limited to the content on specification sheets, must determine its technical scope according to right.
Claims (2)
1. a phosphorous printing and dyeing wastewater processing equipment, is characterized in that: comprise wastewater equalization pond, decolouring dephosphorization pond (1), anoxic anaerobic reation pool (2), biochemical contact tank (3), second pond;
Described wastewater equalization pond comprises wastewater equalization pond water inlet pipe, pH value TT&C system and wastewater equalization pond rising pipe, for regulating the pH value of phosphorous dyeing waste water, water quality and the water yield;
Described decolouring dephosphorization pond (1) comprises mix and blend district (1-1) and settling region (1-2), decolouring dephosphorization pond water inlet pipe (1-3) is provided with bottom mix and blend district, middle and upper part is provided with the liquid add-on system (1-4) for adding decolouring dephosphorization agent, is provided with whipping appts (1-5) in the middle part of stirring area; Baffle plate (1-6) is provided with in described settling region, this baffle plate forms with the inwall in decolouring dephosphorization pond the waste water runner entering settling region as waste water, the exit of settling region is provided with triphase separator (1-7), the outlet top of settling region is provided with overfalling weir (1-8), the tapered structure of settling region bottom design, is provided with sediment discharge valve (1-9) bottom settling region;
Described anoxic anaerobic reation pool (2) comprise be separated into by traverse baffle (2-1) double oxygen section (2-2), anoxic section (2-3) and anaerobism section (2-4), described double oxygen section (2-2) head end is provided with the anoxic anaerobic reation pool water inlet pipe (2-5) for feeding waste water, oxygen section (2-2) end of holding concurrently is communicated with anoxic section (2-3) head end, and anoxic section (2-3) end is communicated with anaerobism section (2-4) head end; The bottom of the water inlet side traverse baffle of described anoxic section (2-3) and anaerobism section (2-4) is provided with the corner of 45 degree, the shock action produced when entering to avoid current, thus the effect playing buffering current and water distribution uniformity; Anaerobism section (2-4) end is provided with triphase separator (2-6) and overfalling weir (2-7), and overfalling weir (2-7) connects rising pipe; Described double oxygen section (2-2), anoxic section (2-3) and the tapered structure of anaerobism section (2-4) bottom design, pyramidal structure connects mud discharging valve (2-8); The double oxygen section of described anoxic anaerobic reation pool, anoxic section and anaerobism section upper cover (2-9) are designed to conical structure, and conical structure top is all provided with methane waste product effuser (2-10);
The interior middle and lower part of described biochemical contact tank (3) arranges biochemical contact tank water inlet pipe (3-1), and described biochemical contact tank water inlet pipe (3-1) bottom is provided with water distribution pyrometric cone (3-2); Described water distribution pyrometric cone (3-2) bottom is provided with aeration regulator control system (3-3), described aeration regulator control system (3-3) comprises aeration plate, gas blower and dissolved oxygen sensing regulation device, further, described aeration plate is the pore type aeration plate being evenly provided with micropore; Described aeration plate connects gas blower by aeration tube, and gas blower is arranged on outside biochemical contact tank, and top, the waste water underwater of biochemical contact tank arrange dissolved oxygen sensing regulation device, and described dissolved oxygen sensing regulation device is according to the work of oxygen capacity regulation and control gas blower; Described biochemical contact tank water inlet pipe top is built-in with filler (3-4); The exit of described biochemical contact tank is laid with overflow weir (3-5);
The rising pipe of described biochemical contact tank (3) connects second pond, and be provided with sludge recirculation system bottom second pond, a part of sludge reflux is to biochemical contact tank.
2. adopt phosphorous printing and dyeing wastewater processing equipment as claimed in claim 1 to carry out a method for wastewater treatment, there are following steps:
1. phosphorous dyeing waste water enters wastewater equalization pond by wastewater equalization pond water inlet pipe and regulates the pH value of waste water, water quality and the water yield;
2. the water after regulating enters decolouring dephosphorization pond (1) by decolouring dephosphorization pond water inlet pipe (1-3) of decolouring dephosphorization Chi Hunhejiaobanqu (1-1) bottom, mix with the decolouring dephosphorization agent from liquid add-on system (1-4), utilize the whipping appts (1-5) be arranged in the middle part of stirring area to stir; Decolouring dephosphorization agent removes the colourity of waste water and a certain amount of phosphorus by effects such as coagulation, precipitation and absorption, and then waste water enters the waste water runner of settling region (1-2), and the triphase separator (1-7) of settling region realizes mud-water separation;
3. mud sinks to the bottom of decolouring settling region, dephosphorization pond (1-2) under gravity, is discharged by the sediment discharge valve (1-9) of bottom; Waste water is communicated with the anoxic anaerobic reation pool water inlet pipe (2-5) of anoxic anaerobic reation pool (2) by overfalling weir (1-8), rising pipe with pipe connecting;
4. waste water enters the bottom of anoxic anaerobic reation pool (2) by the hold concurrently anoxic anaerobic reation pool water inlet pipe (2-5) of oxygen section of anoxic anaerobic reation pool; Advance up and down along traverse baffle (2-1) after waste water enters anoxic anaerobic reation pool, successively by the Sludge Bed of each reaction chamber of hold concurrently oxygen section (2-2), anoxic section (2-3) and anaerobism section (2-4), mud in reaction tank moves along with the upper current downflow of waste water and the effect of biogas rising, the barrier effect of traverse baffle (2-1) and the settlement action of mud self make again the flow velocity of mud reduce, therefore a large amount of mud is all trapped within reaction tank, and the microorganism in reaction tank fully contacts with the organism in waste water; Hydrolysis of organic matter in waste water is organic acid by the heterotrophic bacterium of the amphimicrobe of oxygen section (2-2), anoxic section (2-3) and the anaerobism section (2-4) held concurrently, make larger molecular organics be decomposed into small organic molecule, insoluble organism changes into dissolved organic matter;
5. the waste water after anaerobic reaction realizes the separation of mud, water, methane gas at the triphase separator (2-6) that anaerobism section (2-4) end is provided with, mud sinks to the bottom of anoxic anaerobic reation pool under gravity, and unnecessary mud is discharged by the mud discharging valve (2-8) of bottom; The methane waste product that anoxic anaerobic reation pool produces collects discharge by reaction tank top effuser (2-10); Waste water is communicated with the biochemical contact tank water inlet pipe of biochemical contact tank (3) by overfalling weir, rising pipe and pipe connecting;
6. waste water enters the middle and lower part of biochemical contact tank (3) by biochemical contact tank water inlet pipe (3-1), water distribution uniformity under the effect of water distribution pyrometric cone (3-2), described aeration plate is the pore type aeration plate being evenly provided with micropore, produce a large amount of microbubbles, described dissolved oxygen sensing regulation device is according to the work of oxygen capacity regulation and control gas blower, guarantee that the dissolved oxygen in biochemical contact tank water is greater than 2mg/L, the waste water after process is flowed out by overflow weir (3-5) and rising pipe;
7. the rising pipe of biochemical contact tank (3) connects the water distributor of second pond, and a precipitating sludge part for second pond is back to biochemical contact tank, and a part is as excess sludge;
8. the qualified discharge after second pond overflow weir of the water after sedimentation in secondary sedimentation tank process;
9. transport outward after the excess sludge dehydration that decolouring dephosphorization pond (1), anoxic anaerobic reation pool (2), biochemical contact tank (3) and second pond produce.
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| CN201510096021.2A CN104671614B (en) | 2015-03-04 | 2015-03-04 | A kind of phosphorous treatment method of printing and dying wastewater and device |
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| CN105060613A (en) * | 2015-07-17 | 2015-11-18 | 常州大学 | High-nitrogen and high-phosphorus pharmaceutical wastewater treatment system |
| CN109320012B (en) * | 2018-10-26 | 2021-11-09 | 首创爱华(天津)市政环境工程有限公司 | Municipal sewage treatment system and method |
| CN110697994A (en) * | 2019-10-31 | 2020-01-17 | 中冶华天工程技术有限公司 | Advanced treatment process and system for printing and dyeing wastewater |
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| CN103466829B (en) * | 2013-08-30 | 2015-08-12 | 常州大学 | High-concentration ammonia nitrogen waste water treatment method and system thereof |
| CN103708617B (en) * | 2014-01-17 | 2015-03-11 | 安徽锋亚环境技术有限公司 | Assembled stereoscopic A2/O reaction tank for rural dispersible sewage treatment |
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