CN105110560A - Zero-discharge dyeing wastewater treatment system - Google Patents
Zero-discharge dyeing wastewater treatment system Download PDFInfo
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- CN105110560A CN105110560A CN201510535845.5A CN201510535845A CN105110560A CN 105110560 A CN105110560 A CN 105110560A CN 201510535845 A CN201510535845 A CN 201510535845A CN 105110560 A CN105110560 A CN 105110560A
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Abstract
The invention relates to a zero-discharge dyeing wastewater treatment system which comprises a wastewater regulating tank, a coagulative precipitation tank, an advanced oxidation precipitation tank, an inverted A2O reaction tank, an aerobic contact oxidation tank, a secondary precipitation tank, a sand filter tank and a clean water tank, wherein the coagulative precipitation tank comprises a mixing region and a precipitation region; the advanced oxidation precipitation tank comprises an aeration mixing region and a precipitation region; the inverted A2O reaction tank comprises a facultative anaerobic section, an anoxic section and an anaerobic section which are divided by deflector plates; the aerobic contact oxidation tank is provided with a water inlet pipe, a water distribution pyrometric cone, a filler and an aeration control system; wastewater is subjected to water quantity and water quality regulation by the regulating tank, enters the coagulative precipitation tank to remove pollutants and enters the advanced oxidation precipitation tank so that the pollutants are subjected to oxidative decomposition; and the wastewater enters the A2O reaction tank and aerobic contact oxidation tank to perform anoxic, anaerobic and aerobic reactions, is subjected to precipitation and filtration, and enters the clean water tank for recycling.
Description
Technical field
The present invention relates to technical field of waste water processing, be specifically related to a kind of zero release printing and dyeing wastewater treatment system.
Background technology
China's textile industry has a large capacity and a wide range, and the waste water quantity of generation is many, and concentration is high, is to one of industrial pollution source that water environment pollution constitutes a serious threat.In textile waste, the most serious with Dying Wastewater Treatment &.Along with development dye species increasing of science and technology, the composition of dyestuff is day by day complicated, and has anti-oxidant, anti-light solution, colourity is high, concentration is high feature, proposes more and more higher requirement to the Treatment process of dyeing waste water and technique.
The Treatment process of dyeing waste water mainly contains chemical method, mass transfer method, heat treating process and biological process etc.The complicated component of dyeing waste water, biodegradability is poor, is difficult to obtain desirable treatment effect, usually adopts the multiple method synthesis process such as physics, chemistry, biology by single method, but brings the problems such as processing cost is high.
Along with the worsening shortages with resource that improves constantly of environmental requirement, the reasonable recovery of water resources and Nonrenewable resources and second stage employ have also become the important content of environmental improvement.
Summary of the invention
The technical problem to be solved in the present invention is: in order to solve a process difficult problem for above-mentioned sewage, the invention provides a kind of zero release printing and dyeing wastewater treatment system, realizing waste water reclaiming reuse.
The technical solution adopted for the present invention to solve the technical problems is: a kind of zero release printing and dyeing wastewater treatment system, comprises wastewater equalization pond, coagulative precipitation tank, advanced oxidation settling tank, inversion A
2o reaction tank, aerobic contact oxidation pond, second pond, sand filter and clean water basin; Described wastewater equalization pond, coagulative precipitation tank, advanced oxidation settling tank, inversion A
2o reaction tank, aerobic contact oxidation pond, second pond, sand filter are communicated with successively with clean water basin.
Described wastewater equalization pond comprises water inlet pipe and rising pipe, for regulating water quality and the water yield of dyeing waste water.
Described coagulative precipitation tank comprises and is uniformly mixed district and settling region, and be uniformly mixed bottom district and be provided with wastewater inlet pipe, middle and upper part is provided with coagulating agent add-on system, is provided with whipping appts being uniformly mixed in the middle part of district; Baffle plate is provided with in described settling region, the inwall of this baffle plate and coagulative precipitation tank forms 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.
The rising pipe of described coagulative precipitation tank is communicated with the water inlet pipe of advanced oxidation settling tank.
Described advanced oxidation settling tank comprises aeration mixing zone and settling region, ozonation aerated dish is provided with bottom aeration mixing zone, the top of described ozonation aerated dish is provided with water distribution branch pipe, described water distribution branch pipe connects water inlet pipe, described ozonation aerated dish is connected with the blower fan outside advanced oxidation settling tank by aeration tube, blower and pipeline is communicated with ozonizer; Baffle plate is provided with in described settling region, the inwall of this baffle plate and settling tank forms 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 mud valve bottom settling region.
Described inversion A
2o reaction tank 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 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; Described inversion A
2the double oxygen section of O reaction tank, anoxic section and anaerobism section upper cover design coning structure, conical structure top is all provided with independently methane waste product effuser; All filler is provided with in described double oxygen section, anoxic section and anaerobism section.
In described aerobic contact oxidation pond, middle and lower part is provided with water inlet pipe, and described 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, gas blower is arranged on outside aerobic contact oxidation pond, top, the waste water underwater in aerobic contact oxidation pond 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; The exit in described aerobic contact oxidation pond is laid with overflow weir.
The rising pipe in described aerobic contact oxidation pond connects second pond, and be provided with sludge recirculation system bottom second pond, a part of sludge reflux is to inversion A
2o reaction tank.
Water after sedimentation in secondary sedimentation tank process enters sand filter through overflow weir, and the water after filtration enters clean water basin reuse.
Adopt above-mentioned zero release printing and dyeing wastewater treatment system to carry out a method for wastewater treatment, there are following steps:
1. dyeing waste water enters wastewater equalization pond regulating water quality and the water yield by water inlet pipe.
2. the wastewater inlet pipe that waste water is uniformly mixed bottom district by coagulative precipitation tank enters coagulative precipitation tank, mixes with the coagulating agent from coagulating agent add-on system, utilizes the whipping appts be arranged in the middle part of stirring area to stir; Waste water after coagulating enters settling region, and the triphase separator of settling region realizes mud-water separation; Mud sinks to the bottom of coagulative precipitation tank settling region under gravity, is discharged by the sediment discharge valve of bottom; Waste water enters the water inlet pipe of advanced oxidation settling tank by overfalling weir, rising pipe and pipe connecting.
3. waste water enters the middle and lower part of advanced oxidation settling tank by the water inlet pipe of advanced oxidation settling tank and water distribution branch pipe; The ozonation aerated dish be arranged in below advanced oxidation settling tank water distribution branch pipe produces a large amount of tiny bubble makes the solids of waste water rub further, macromolecular substance in waste water is oxidized to the small-molecule substance being easy to absorb and adsorb simultaneously, waste water after oxygenolysis enters the waste water runner of settling region, and the triphase separator of settling region realizes mud-water separation; Mud sinks to the bottom of advanced oxidation settling tank settling region under gravity, is discharged by the mud valve of bottom; Waste water is communicated with the water inlet pipe of inversion A 2O reaction tank by overfalling weir, rising pipe with pipe connecting.
4. waste water passes through inversion A
2the hold concurrently water inlet pipe of oxygen section of O reaction tank enters inversion A
2the bottom of O reaction tank; Waste water enters inversion A
2advance up and down along traverse baffle after O reaction tank, 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.The suspended contaminant such as the starch in waste water, fiber, carbohydrate and dissolved organic matter are hydrolyzed to organic acid by the heterotrophic bacterium of the amphimicrobe of oxygen section, anoxic section and the anaerobism section 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 that anaerobism section end is provided with, and mud sinks to inversion A under gravity
2the bottom of O reaction tank, unnecessary mud is discharged by the mud discharging valve of bottom; Inversion A
2the methane waste product that O reaction tank produces collects discharge by reaction tank top effuser; Waste water after process is communicated with the water inlet pipe in aerobic contact oxidation pond by overfalling weir, rising pipe with pipe connecting.
6. waste water enters the middle and lower part in aerobic contact oxidation pond by 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 the water of aerobic contact oxidation pond is greater than 2mg/L, the waste water after process is flowed out by overflow weir and rising pipe.
7. the rising pipe in aerobic contact oxidation pond connects the water distributor of second pond, and the precipitating sludge part sludge reflux of second pond is to inversion A
2o reaction tank, a part is as excess sludge.
8. the water after sedimentation in secondary sedimentation tank process enters sand filter through overflow weir, and the water after filtration enters clean water basin reuse.
9. coagulative precipitation tank, advanced oxidation settling tank, inversion A
2transport outward after the throw out that O reaction tank and second pond produce and excess sludge dehydration.
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 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 of embodiment of the present invention coagulative precipitation tank.
In Fig. 1: 1. coagulative precipitation tank, 1-1. is uniformly mixed district, 1-2. coagulative precipitation tank settling region, 1-3. wastewater inlet pipe, 1-4. coagulating agent add-on system, 1-5. whipping appts, 1-6. coagulative precipitation tank 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 advanced oxidation settling tank.
In Fig. 2: 2. advanced oxidation settling tank, 2-1. aeration mixing zone, 2-2. settling region, the ozonation aerated dish of 2-3., 2-4. water distribution branch pipe, 2-5. water inlet pipe, 2-6. ozone gas blower and gas meter, 2-7. ozonizer, 2-8. baffle plate, 2-9. advanced oxidation settling tank triphase separator, 2-10. advanced oxidation settling tank overfalling weir, 2-11. mud valve.
Fig. 3 is embodiment of the present invention inversion A
2the structural representation of O reaction tank.
In Fig. 3: 3. inversion A
2o reaction tank, 3-1. traverse baffle, 3-2. holds concurrently oxygen section, 3-3. anoxic section, 3-4. anaerobism section, 3-5. inversion A
2o reaction tank water inlet pipe, 3-6. inversion A
2o reaction tank triphase separator, 3-7. inversion A
2o reaction tank overfalling weir, 3-8. mud discharging valve, 3-9. upper cover, 3-10. effuser, 3-11. filler.
Fig. 4 is the structural representation in embodiment of the present invention aerobic contact oxidation pond.
In Fig. 4: 4. aerobic contact oxidation pond, 4-1. aerobic contact oxidation pond water inlet pipe, 4-2. water distribution pyrometric cone, 4-3. aeration regulator control system, 4-4. aerobic contact oxidation pond filler, 4-5. aerobic contact oxidation pond overflow weir.
Fig. 5 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.
Embodiment
As shown in Fig. 1 ~ Fig. 5, a kind of zero release printing and dyeing wastewater treatment system of the present invention, comprises wastewater equalization pond, coagulative precipitation tank 1, advanced oxidation settling tank 2, inversion A
2o reaction tank 3, aerobic contact oxidation pond 4, second pond, sand filter and clean water basin; Described wastewater equalization pond, coagulative precipitation tank 1, advanced oxidation settling tank 2, inversion A
2o reaction tank 3, aerobic contact oxidation pond 4, second pond, sand filter are communicated with successively with clean water basin.
Described wastewater equalization pond comprises water inlet pipe and rising pipe, for regulating water quality and the water yield of dyeing waste water.
Described coagulative precipitation tank 1 comprises and is uniformly mixed district 1-1 and settling region 1-2, and be uniformly mixed bottom district and be provided with wastewater inlet pipe 1-3, middle and upper part is provided with coagulating agent add-on system 1-4, is provided with whipping appts 1-5 being uniformly mixed in the middle part of district; Baffle plate 1-6 is provided with in described settling region, the inwall of this baffle plate and settling tank forms 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.
The rising pipe of described coagulative precipitation tank 1 is communicated with the water inlet pipe 2-5 of advanced oxidation settling tank 2.
Described advanced oxidation settling tank 2 comprises aeration mixing zone 2-1 and settling region 2-2, ozonation aerated dish 2-3 is provided with bottom aeration mixing zone, the top of described ozonation aerated dish is provided with water distribution branch pipe 2-4, described water distribution branch pipe 2-4 connects water inlet pipe 2-5, described ozonation aerated dish 2-3 is connected with the blower fan outside advanced oxidation settling tank by aeration tube, blower and pipeline is communicated with ozonizer 2-7; Baffle plate 2-8 is provided with in described settling region, the inwall of this baffle plate and settling tank forms the waste water runner entering settling region as waste water, the exit of settling region is provided with triphase separator 2-9, the outlet top of settling region is provided with overfalling weir 2-10, the tapered structure of settling region bottom design, is provided with mud valve 2-11 bottom settling region.
Described inversion A
2o reaction tank 3 comprises the double oxygen section 3-2, anoxic section 3-3 and the anaerobism section 3-4 that are separated into by traverse baffle 3-1, described double oxygen section 3-2 head end is provided with the water inlet pipe 3-5 for feeding waste water, oxygen section 3-2 end of holding concurrently is communicated with anoxic section 3-3 head end, anoxic section 3-3 end is communicated with anaerobism section 3-4 head end, the bottom of described anoxic section 3-3 and anaerobism section 3-4 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 3-4 end is provided with triphase separator 3-6 and overfalling weir 3-7, and overfalling weir 3-7 connects rising pipe; Described double oxygen section 3-2, anoxic section 3-3 and the tapered structure of anaerobism section 3-4 bottom design, pyramidal structure connects mud discharging valve 3-8; Described inversion A
2the upper cover 3-9 of the double oxygen section of O reaction tank, anoxic section and anaerobism section is designed to conical structure, and conical structure top is all provided with independently methane waste product effuser 3-10; Filler 3-11 is all provided with in described double oxygen section, anoxic section and anaerobism section.
In described aerobic contact oxidation pond 4, middle and lower part is provided with water inlet pipe 4-1, and described water inlet pipe 4-1 bottom is provided with water distribution pyrometric cone 4-2; Described water distribution pyrometric cone 4-2 bottom is provided with aeration regulator control system 4-3, and described aeration regulator control system 4-3 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, gas blower is arranged on outside aerobic contact oxidation pond, top, the waste water underwater in aerobic contact oxidation pond 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 4-4; The exit in described aerobic contact oxidation pond is laid with overflow weir 4-5.
The rising pipe in described aerobic contact oxidation pond 4 connects second pond, and be provided with sludge recirculation system bottom second pond, a part of sludge reflux is to inversion A
2in O reaction tank 3, a part is excess sludge.
Water after sedimentation in secondary sedimentation tank process enters sand filter through overflow weir, and the water after filtration enters clean water basin reuse.
Adopt above-mentioned zero release printing and dyeing wastewater treatment system to carry out a method for wastewater treatment, there are following steps:
1. dyeing waste water enters wastewater equalization pond regulating water quality and the water yield by water inlet pipe.
2. the wastewater inlet pipe 1-3 that waste water is uniformly mixed bottom district by coagulative precipitation tank enters coagulative precipitation tank 1, mixes with the coagulating agent from coagulating agent add-on system 1-4, utilizes the whipping appts 1-5 be arranged in the middle part of stirring area to stir; Waste water after coagulating enters settling region 1-2, and the triphase separator 1-7 of settling region realizes mud-water separation; Mud sinks to the bottom of coagulative precipitation tank settling region 1-2 under gravity, is discharged by the sediment discharge valve 1-9 of bottom; Waste water enters the water inlet pipe 2-5 of advanced oxidation settling tank by overfalling weir 1-8, rising pipe and pipe connecting.
3. waste water enters the middle and lower part of advanced oxidation settling tank 2 by advanced oxidation settling tank water inlet pipe 2-5 and water distribution branch pipe 2-4; The ozonation aerated dish 2-3 be arranged in below advanced oxidation settling tank water distribution branch pipe produces a large amount of tiny bubble makes the solids of waste water rub further, macromolecular substance in waste water is oxidized to the small-molecule substance being easy to absorb and adsorb simultaneously, waste water after oxygenolysis enters the waste water runner of settling region, and the triphase separator 2-9 of settling region realizes mud-water separation; Mud sinks to the bottom of advanced oxidation settling tank settling region 2-2 under gravity, is discharged by the mud valve 2-11 of bottom; Waste water is communicated with inversion A by overfalling weir 2-10, rising pipe with pipe connecting
2the water inlet pipe 3-5 of O reaction tank.
4. waste water passes through inversion A
2the hold concurrently water inlet pipe 3-5 of oxygen section of O reaction tank enters inversion A
2the bottom of O reaction tank 3; Waste water enters inversion A
2advance up and down along traverse baffle after O reaction tank, successively by the Sludge Bed of each reaction chamber of hold concurrently oxygen section 3-2, anoxic section 3-3 and anaerobism section 3-4, 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 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.The suspended contaminant such as the starch in waste water, fiber, carbohydrate and dissolved organic matter are hydrolyzed to organic acid by the double amphimicrobe of oxygen section 3-2, the heterotrophic bacterium of anoxic section 3-3 and anaerobism section 3-4, 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 3-6 that anaerobism section 3-4 end is provided with, and mud sinks to inversion A under gravity
2the bottom of O reaction tank, unnecessary mud is discharged by the mud discharging valve 3-8 of bottom; Inversion A
2the methane waste product that O reaction tank produces collects discharge by reaction tank top effuser 3-10; Waste water is communicated with the water inlet pipe 4-1 in aerobic contact oxidation pond by overfalling weir, rising pipe with pipe connecting.
6. waste water enters the middle and lower part in aerobic contact oxidation pond 4 by water inlet pipe 4-1, water distribution uniformity under the effect of water distribution pyrometric cone 4-2, described aeration plate produces 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 the water of aerobic contact oxidation pond is greater than 2mg/L, the waste water after process is flowed out by overflow weir 4-5 and rising pipe.
7. the rising pipe in aerobic contact oxidation pond connects the water distributor of second pond, and the precipitating sludge part sludge reflux of second pond is to inversion A
2in O reaction tank 3, a part is as excess sludge.
8. the water after sedimentation in secondary sedimentation tank process enters sand filter through overflow weir, and the water after filtration enters clean water basin reuse.
9. coagulative precipitation tank 1, advanced oxidation settling tank 2, inversion A
2transport outward after the throw out that O reaction tank 3, aerobic contact oxidation pond 4 and second pond produce and excess sludge dehydration.
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 (1)
1. a zero release printing and dyeing wastewater treatment system, is characterized in that: comprise wastewater equalization pond, coagulative precipitation tank (1), advanced oxidation settling tank (2), inversion A
2o reaction tank (3), aerobic contact oxidation pond (4), second pond, sand filter and clean water basin;
Described wastewater equalization pond comprises water inlet pipe and rising pipe, for regulating water quality and the water yield of dyeing waste water;
Described coagulative precipitation tank (1) comprises and is uniformly mixed district (1-1) and settling region (1-2), be uniformly mixed bottom district and be provided with wastewater inlet pipe (1-3), middle and upper part is provided with coagulating agent add-on system (1-4), is provided with whipping appts (1-5) being uniformly mixed in the middle part of district; Baffle plate (1-6) is provided with in described settling region, the inwall of this baffle plate and coagulative precipitation tank forms 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 advanced oxidation settling tank (2) comprises aeration mixing zone (2-1) and settling region (2-2), ozonation aerated dish (2-3) is provided with bottom aeration mixing zone, the top of described ozonation aerated dish is provided with water distribution branch pipe (2-4), described water distribution branch pipe (2-4) connects water inlet pipe (2-5), described ozonation aerated dish (2-3) is connected with the blower fan outside advanced oxidation settling tank by aeration tube, blower and pipeline is communicated with ozonizer (2-7); Baffle plate (2-8) is provided with in described settling region, the inwall of this baffle plate and settling tank forms the waste water runner entering settling region as waste water, the exit of settling region is provided with triphase separator (2-9), the outlet top of settling region is provided with overfalling weir (2-10), the tapered structure of settling region bottom design, is provided with mud valve (2-11) bottom settling region;
Described inversion A
2o reaction tank (3) comprise be separated into by traverse baffle (3-1) double oxygen section (3-2), anoxic section (3-3) and anaerobism section (3-4), described double oxygen section (3-2) head end is provided with the water inlet pipe (3-5) for feeding waste water, oxygen section (3-2) end of holding concurrently is communicated with anoxic section (3-3) head end, and anoxic section (3-3) end is communicated with anaerobism section (3-4) head end; The bottom of the water inlet side traverse baffle of described anoxic section (3-3) and anaerobism section (3-4) 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 (3-4) end is provided with triphase separator (3-6) and overfalling weir (3-7), and overfalling weir (3-7) connects rising pipe; Described double oxygen section (3-2), anoxic section (3-3) and the tapered structure of anaerobism section (3-4) bottom design, pyramidal structure connects mud discharging valve (3-8); Described inversion A
2the upper cover (3-9) of the double oxygen section of O reaction tank, anoxic section and anaerobism section is designed to conical structure, and conical structure top is all provided with methane waste product effuser (3-10); Filler (3-11) is all provided with in described double oxygen section, anoxic section and anaerobism section;
The interior middle and lower part of described aerobic contact oxidation pond (4) arranges water inlet pipe (4-1), and described water inlet pipe (4-1) bottom is provided with water distribution pyrometric cone (4-2); Described water distribution pyrometric cone (4-2) bottom is provided with aeration regulator control system (4-3), and described aeration regulator control system (4-3) 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, gas blower is arranged on outside aerobic contact oxidation pond, top, the waste water underwater in aerobic contact oxidation pond 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 (4-4); The exit in described aerobic contact oxidation pond is laid with overflow weir (4-5);
The rising pipe of described aerobic contact oxidation pond (4) connects second pond, and be provided with sludge recirculation system bottom second pond, a part of sludge reflux is to inversion A
2in O reaction tank (3);
Water after sedimentation in secondary sedimentation tank process enters sand filter through overflow weir, and the water after filtration enters clean water basin reuse.
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| CN201510535845.5A CN105110560A (en) | 2015-08-27 | 2015-08-27 | Zero-discharge dyeing wastewater treatment system |
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| CN109942155A (en) * | 2019-04-16 | 2019-06-28 | 南京工程学院 | A kind of printing-dyeing waste water treatment process |
| CN110697995A (en) * | 2019-10-31 | 2020-01-17 | 中冶华天工程技术有限公司 | Cellulose ethanol wastewater treatment process and system |
| CN112093972A (en) * | 2019-06-18 | 2020-12-18 | 上海睿易环境科技有限公司 | Biological industrial wastewater treatment system and method |
| CN112479476A (en) * | 2019-09-12 | 2021-03-12 | 杭州友智环保科技有限公司 | Advanced sewage treatment equipment |
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Application publication date: 20151202 |