CN105152493A - High-ammonia wastewater treatment method and device - Google Patents
High-ammonia wastewater treatment method and device Download PDFInfo
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- CN105152493A CN105152493A CN201510672340.3A CN201510672340A CN105152493A CN 105152493 A CN105152493 A CN 105152493A CN 201510672340 A CN201510672340 A CN 201510672340A CN 105152493 A CN105152493 A CN 105152493A
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Abstract
The invention relates to the technical field of industrial sewage treatment, particularly a high-ammonia wastewater treatment method and device. The invention is characterized in that the high-ammonia wastewater treatment device is provided with an ozone oxidation reactor, a floatation treatment unit, a pH regulation tank, an anaerobic tank, microaerobic tank and an aerobic tank which are sequentially connected, wherein the anaerobic tank is filled with microbial sludge particles and provided with a circulating pump and a sludge return pipe; the bottom of the anaerobic tank is provided with a water distributor; and a sewage inlet of the anaerobic tank is connected with the water distributor. Compared with the prior art, the organic matters and ammonia nitrogen substances in the wastewater are firstly subjected to oxidation treatment, and thus, can be degraded by microbes more easily; the wastewater sequentially passes through the anaerobic tank, microaerobic tank and aerobic tank, so that the sewage sufficiently contacts the microbes, thereby effectively lowering the ammonia nitrogen content in the sewage; and the device has the obvious advantages of reasonable structure, low cost and the like.
Description
Technical field:
The present invention relates to technical field of industrial sewage treatment, specifically a kind of high-ammonia wastewater treatment process and device.
Background technology:
In the process of industrial waste water with high ammoniac nitrogen, the removal of ammonia nitrogen is up to standard often becomes the bottleneck processing this kind of wastewater treatment.And, along with the day by day serious of Water Eutrophication problem and people's going deep into, to the cleanup standard of nitrogen also increasingly stringent in wastewater treatment nitrogen harm quality of water environment understanding.And the waste water nitrogen content of discharging in industrial production is higher, and C/N value is lower, and when adopting conventional complete nitrification art breading, effluent quality is difficult to meet the demands, and due to ammonia nitrogen concentration high, need to increase aeration to meet the dissolved oxygen requirement of ammonium oxidation.In addition, the low C/N character of waste water causes denitrifying carbon source not enough, and nitric efficiency is low, needs additional carbon.Therefore, the processing costs of waste water is high and along with the problem of high energy consumption.
Summary of the invention:
The present invention is directed to the shortcoming and defect existed in prior art, propose a kind of high-ammonia wastewater treatment process and device.
The present invention can be reached by following measures:
A kind of high-ammonia wastewater treatment process, is characterized in that comprising the following steps:
Step 1: sent into by waste water in ozone oxidation reaction device, by passing into ozone in sewage, carries out oxygenolysis process to high ammonia nitrogen organic wastewater with difficult degradation thereby, removes volatile phenol and prussiate, deodorizing simultaneously, decolouring, antisepsis and sterilization;
Step 2: the waste water after processing through step 1 is carried out air-flotation process, then adds white lime and carries out alkali tune process in the high ammonia-nitrogen wastewater after air-flotation process, makes the mineralized nitrogen in waste water be free ammonia, then carries out solid-liquid separation, obtain ammonia-containing water;
Step 3: utilize biological fluidized bed to be equipped with affinity biologic packing material and depth degradation process is carried out to the waste water after step 2 process, enter anaerobic pond, micro-oxygen pond and Aerobic Pond successively, be specially: first enter anaerobic pond, with the nitrosification liquid of backflow, nitrification liquid and returned sluge mixing, under the effect of stirring, mix, wherein the HRT of anaerobic pond is 1.5h ~ 2.5h, DO is 0mg/L ~ 0.5mg/L; Waste water after process enters micro-oxygen section, under the stirring of micro-aerating system, after mixing, is back in anaerobic pond by the water outlet 90% ~ 110% of micro-oxygen section, and the HRT of micro-oxygen section is 1.5h ~ 2.5h, DO is 0.3mg/L ~ 1mg/L; Waste water after the process of micro-oxygen section, enter aerobic section stop 20min ~ 40min in medium sediment pool after, carry out being oxidized and nitration reaction, reacted nitrification liquid 90% ~ 110% is back to anaerobic pond, wherein in aerobic section, HRT is 5.5h ~ 6.5h, DO is 2mg/L ~ 4mg/L;
Step 4: the precipitate and separate of carrying out film and process water in settling tank, the microbial film fragment that comes off and SS value is increased to some extent carried under one's arms in water outlet, makes water become clear in natural sedimentation situation;
Step 5: water outlet up to standard, wherein ammonia nitrogen concentration is less than 10mg/L.
The invention allows for a kind of high-ammonia wastewater treatment unit, it is characterized in that being provided with ozone oxidation reaction device connected successively, air-flotation process device, acid-alkali accommodation pond, anaerobic pond, micro-oxygen pond and Aerobic Pond, settling tank, wherein fill microorganism sludge particle in anaerobic pond, and be provided with recycle pump and mud return line, be provided with water distributor bottom anaerobic pond, the sewage inlet of anaerobic pond is connected with water distributor.
Micro-oxygen pond of the present invention is provided with micro-aerating system, and is provided with water distributor, recycle pump and mud return line.
Aerobic Pond of the present invention is provided with aerator, water distributor, recycle pump and mud return line.
The present invention compared with prior art, first by carrying out oxide treatment to the organism in waste water and ammonia nitrogen substances, that it is more easily degraded by microorganisms, then successively by anaerobic pond, micro-oxygen pond and Aerobic Pond, sewage is fully contacted with microorganism, effective reduction ammonia nitrogen in sewage content, has the significant advantages such as rational in infrastructure, cost is low.
Accompanying drawing illustrates:
Accompanying drawing 1 is structural representation of the present invention.
Reference numeral: ozone oxidation reaction device 1, air-flotation process device 2, acid-alkali accommodation pond 3, anaerobic pond 4, micro-oxygen pond 5, Aerobic Pond 6, settling tank 7.
Embodiment:
Below in conjunction with accompanying drawing, the present invention is further illustrated.
The present invention proposes a kind of high-ammonia wastewater treatment process, it is characterized in that comprising the following steps: step 1: waste water is sent in ozone oxidation reaction device, by passing into ozone in sewage, oxygenolysis process is carried out to high ammonia nitrogen organic wastewater with difficult degradation thereby, remove volatile phenol and prussiate, deodorizing simultaneously, decolouring, antisepsis and sterilization;
Step 2: the waste water after processing through step 1 is carried out air-flotation process, then adds white lime and carries out alkali tune process in the high ammonia-nitrogen wastewater after air-flotation process, makes the mineralized nitrogen in waste water be free ammonia, then carries out solid-liquid separation, obtain ammonia-containing water;
Step 3: utilize biological fluidized bed to be equipped with affinity biologic packing material and depth degradation process is carried out to the waste water after step 2 process, enter anaerobic pond, micro-oxygen pond and Aerobic Pond successively, be specially: first enter anaerobic pond, with the nitrosification liquid of backflow, nitrification liquid and returned sluge mixing, under the effect of stirring, mix, wherein the HRT of anaerobic pond is 1.5h ~ 2.5h, DO is 0mg/L ~ 0.5mg/L; Waste water after process enters micro-oxygen section, under the stirring of micro-aerating system, after mixing, is back in anaerobic pond by the water outlet 90% ~ 110% of micro-oxygen section, and the HRT of micro-oxygen section is 1.5h ~ 2.5h, DO is 0.3mg/L ~ 1mg/L; Waste water after the process of micro-oxygen section, enter aerobic section stop 20min ~ 40min in medium sediment pool after, carry out being oxidized and nitration reaction, reacted nitrification liquid 90% ~ 110% is back to anaerobic pond, wherein in aerobic section, HRT is 5.5h ~ 6.5h, DO is 2mg/L ~ 4mg/L;
Step 4: the precipitate and separate of carrying out film and process water in settling tank, the microbial film fragment that comes off and SS value is increased to some extent carried under one's arms in water outlet, makes water become clear in natural sedimentation situation;
Step 5: water outlet up to standard, wherein ammonia nitrogen concentration is less than 10mg/L.
As shown in Figure 1, the invention allows for a kind of high-ammonia wastewater treatment unit, it is characterized in that being provided with ozone oxidation reaction device 1 connected successively, air-flotation process device 2, acid-alkali accommodation pond 3, anaerobic pond 4, micro-oxygen pond 5 and Aerobic Pond 6, settling tank 7, wherein fill microorganism sludge particle in anaerobic pond 4, and be provided with recycle pump and mud return line, be provided with water distributor bottom anaerobic pond 4, the sewage inlet of anaerobic pond is connected with water distributor.
Micro-oxygen pond 5 of the present invention is provided with micro-aerating system, and is provided with water distributor, recycle pump and mud return line.
Aerobic Pond 6 of the present invention is provided with aerator, water distributor, recycle pump and sludge reflux.
Claims (5)
1. a high-ammonia wastewater treatment process, is characterized in that comprising the following steps:
Step 1: sent into by waste water in ozone oxidation reaction device, by passing into ozone in sewage, carries out oxygenolysis process to high ammonia nitrogen organic wastewater with difficult degradation thereby, removes volatile phenol and prussiate, deodorizing simultaneously, decolouring, antisepsis and sterilization;
Step 2: the waste water after processing through step 1 is carried out air-flotation process, then adds white lime and carries out alkali tune process in the high ammonia-nitrogen wastewater after air-flotation process, makes the mineralized nitrogen in waste water be free ammonia, then carries out solid-liquid separation, obtain ammonia-containing water;
Step 3: utilize biological fluidized bed to be equipped with affinity biologic packing material and depth degradation process is carried out to the waste water after step 2 process, enter anaerobic pond, micro-oxygen pond and Aerobic Pond successively, be specially: first enter anaerobic pond, with the nitrosification liquid of backflow, nitrification liquid and returned sluge mixing, under the effect of stirring, mix, wherein the HRT of anaerobic pond is 1.5h ~ 2.5h, DO is 0mg/L ~ 0.5mg/L; Waste water after process enters micro-oxygen section, under the stirring of micro-aerating system, after mixing, is back in anaerobic pond by the water outlet 90% ~ 110% of micro-oxygen section, and the HRT of micro-oxygen section is 1.5h ~ 2.5h, DO is 0.3mg/L ~ 1mg/L; Waste water after the process of micro-oxygen section, enter aerobic section stop 20min ~ 40min in medium sediment pool after, carry out being oxidized and nitration reaction, reacted nitrification liquid 90% ~ 110% is back to anaerobic pond, wherein in aerobic section, HRT is 5.5h ~ 6.5h, DO is 2mg/L ~ 4mg/L;
Step 4: the precipitate and separate of carrying out film and process water in settling tank, the microbial film fragment that comes off and SS value is increased to some extent carried under one's arms in water outlet, makes water become clear in natural sedimentation situation;
Step 5: water outlet up to standard, wherein ammonia nitrogen concentration is less than 10mg/L.
2. a high-ammonia wastewater treatment unit, it is characterized in that being provided with ozone oxidation reaction device connected successively, air-flotation process device, acid-alkali accommodation pond, anaerobic pond, micro-oxygen pond and Aerobic Pond, settling tank, wherein fill microorganism sludge particle in anaerobic pond, and be provided with recycle pump and mud return line, be provided with water distributor bottom anaerobic pond, the sewage inlet of anaerobic pond is connected with water distributor.
3. a kind of high-ammonia wastewater treatment unit according to claim 1, is characterized in that described micro-oxygen pond is provided with micro-aerating system, and is provided with water distributor, recycle pump and mud return line.
4. a kind of high-ammonia wastewater treatment unit according to claim 1, is characterized in that described Aerobic Pond is provided with aerator, water distributor, recycle pump and mud return line.
5. a kind of high-ammonia wastewater treatment unit according to claim 1, is characterized in that the Multi-level deflector plate be also provided with in described Aerobic Pond for changing wastewater streams path.
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| CN201510672340.3A CN105152493A (en) | 2015-10-13 | 2015-10-13 | High-ammonia wastewater treatment method and device |
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Citations (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101229944A (en) * | 2007-08-28 | 2008-07-30 | 北京大学 | Intensified biological treatment method for high strength ammonia wastewater |
| CN103253825A (en) * | 2013-05-06 | 2013-08-21 | 天津市滨海新区塘沽环境保护监测站 | United strengthened treatment method for high ammonia nitrogen degradation-resistant organic wastewater |
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Patent Citations (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101229944A (en) * | 2007-08-28 | 2008-07-30 | 北京大学 | Intensified biological treatment method for high strength ammonia wastewater |
| CN103253825A (en) * | 2013-05-06 | 2013-08-21 | 天津市滨海新区塘沽环境保护监测站 | United strengthened treatment method for high ammonia nitrogen degradation-resistant organic wastewater |
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