CN103588299A - Integrated short-cut nitrification and denitrification biological nitrogen-removal reactor - Google Patents
Integrated short-cut nitrification and denitrification biological nitrogen-removal reactor Download PDFInfo
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- CN103588299A CN103588299A CN201310474937.8A CN201310474937A CN103588299A CN 103588299 A CN103588299 A CN 103588299A CN 201310474937 A CN201310474937 A CN 201310474937A CN 103588299 A CN103588299 A CN 103588299A
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Abstract
The invention relates to a sewage treatment device and specifically relates to an integrated short-cut nitrification and denitrification biological nitrogen-removal reactor which is used for solving the current situation that the existing short-cut nitrification and denitrification biological nitrogen-removal process equipment is large in floor space and high in capital expenditure, needs to be controlled by professional personnel in operating and debugging, and is very complex to operate and manage. The equipment is organically combined with an air plug-flow zone, an aeration zone, an anoxic zone and a settling zone to form an integrated reactor. The equipment consists of a biological nitrogen-removal reactor 1, a water tank 2, a balanced water tank 3, a gas flow rate meter 5, an air compressor 6, an air impeller 7, a mud exhausting hole 8, a water outlet 9, and the like. The equipment can be used for realizing a stable short-cut nitrification and denitrification process, and has the advantages of being simple in structure, small in floor space, low in power consumption, high in oxygen transmission efficiency and high in automation control degree. The reactor disclosed by the invention can be suitable for various nitrogen-containing sewage treatment, is good in treatment effect and stable in outlet water quality.
Description
Technical field
The present invention relates to technical field of sewage treatment equipment, specifically a kind of integrated short-cut nitrification and denitrification biological denitrification reactor.
Background technology
Nitrogenous effluent is unprocessed or deal with improperly and be just directly discharged in water body, can cause body eutrophication, causes water pollution, and water body environment quality is reduced, and endangers the whole ecosystem.Therefore in recent years, people start to pay attention to the impact that polluted by nitrogen causes environment, progressively carry out every engineering that nitrate pollution is controlled, and the various technique for denitrogenation processing is developed in technical field of sewage.
At present, the main treatment technology of nitrogenous effluent mainly contains following several both at home and abroad: Physical, chemical method, physico-chemical processes and biological process.Physical and chemical method are very restricted in real project using, Yin Qiyi cause secondary pollution and processing costs high, and bio-denitrification technology has overcome the shortcoming of Physical and chemical method generation, and during application, operating process is simple, removal efficiency is high, so bio-denitrification technology becomes the important research direction that water pollutes process field gradually.
Traditional biological denitrification process is that aerobic nitrification process and anoxic denitrification complete in succession or alternately, first ammonifying bacteria by organonitrogen oxygenolysis, be NH under effect
4 +-N; Then by autotrophic type nitrobacteria by NH
4 +-N is oxidized to NO
2 --N and NO
3 --N; Follow NO
2 --N and NO
3 --N is reduced to N under the effect of denitrifying bacterium
2or other oxynitride, last N
2discharge into the atmosphere, thereby reach the object of denitrogenation.Traditional biological denitrification process is a complete biological denitrification process, comprises ammonification, and nitrification and denitrification form.Advantage: the reaction process such as organic removal and ammonification, nitrated, denitrification are carried out respectively in relatively independent reactor, can reach optimal state by technology controlling and process, thereby various speed of reaction are all very fast, reaction is carried out more thorough.Shortcoming: processing unit is many, capital construction cost is high, and operational management is complicated.
Because traditional biological denitrification process exists, denitrogenate process complexity, energy consumption is many, the shortcoming that the time is long, so Chinese scholars researchs and develops a kind of Process of Biological Nitrogen Removal, short-cut nitrification and denitrification, is characterized in nitrifying process to be controlled at HNO
2stage and stopping, stop NO
2 -be further oxidized to NO
3 -, directly carry out subsequently denitrification.The advantage of short-cut nitrification and denitrification mainly contains: (1) reduces the oxygen requirement of 25% left and right, reduces energy consumption; (2) reduce the organic carbon source of 40% left and right, save running cost; (3) reactor volume is little, saves floor space; (4) denitrification rate is high; (5) contrast complete nitrification and denitrification process, sludge yield is few; (6) reduce the dosage of alkali.
At present, for realizing short-cut nitrification and denitrification biological denitrification process, main path is in traditional biological denitrification process, to control temperature of reaction, dissolved oxygen concentration, pH value, free ammonia, load and interpolation inhibitor etc.The advantage of this mode is, can utilize the ripe developing operation experience of traditional biological denitrification process, and shortcoming is: (1) occupation area of equipment is large, and capital cost is high, and operation debugging needs professional to control, and operational management is very complicated.
Summary of the invention
In order to address the above problem, the object of this invention is to provide a kind of integrated short distance synchronous nitration and denitrification biological denitrification reactor, by simple control, just can realize short-cut nitrification and denitrification process, and greatly reduce occupation area of equipment, effectively reduce working cost, and it is simple to have operational management, can realize the advantage that automatization is controlled.
The integrated short-cut nitrification and denitrification biological denitrification reactor of the present invention, it is characterized in that: by biological denitrification reactor, water tank, balanced reservoir, liquid meter, gas meter, air compressor, air impeller, mudhole, water outlet 9 forms, be divided into air plug-flow district, aeration zone, oxygen-starved area and settling region, biological denitrification reactor is made by anticorrosion carbon steel material, by the aerobic stage of biological treatment, double oxygen stage and settling region concentrate in a pond, aeration zone volume is 60-100L, water inlet is Continuous Flow, adopt air impeller to carry out large multiple proportions circulation, water inlet is mixed into air plug-flow district with settling tank recirculation water, air compressor pressurized air is pushed into aeration zone through air impeller by water inlet, aeration zone adopts micro-hole aerator to carry out aeration, water outlet enters oxygen-starved area, carry out after anti-nitration reaction oxygen-starved area, water outlet enters settling region, settling region is inclined-plate clarifying basin, the discharge of settling tank water part, part together enters air plug-flow district with water inlet.Aeration zone dissolved oxygen concentration is higher at feed-water end, and water side is lower.
During operation, sewage is controlled and is entered reaction tank mixing zone through distribution reservoir by liquid meter, from inclined-plate clarifying basin water outlet, gas meter regulates the gas that enters aeration zone, by air-lift unit system, makes to carry out rapid dilution into water and water outlet, and air plug-flow district adopts air impeller to carry out water circulation.
In operational process, by computer controlled automatic aeration zone tail end DO concentration, be 0.3mg/L, whole aeration zone DO concentration can not surpass 0.3mg/L.
The present invention has following beneficial effect: 1 concentrates on the aerobic stage of biological treatment, hold concurrently oxygen stage and settling region etc. in a pond, greatly reduce the floor space of equipment, and power consumption is low, and oxygen transfer efficiency is high.2 aeration zone dissolved oxygen concentrations are higher at feed-water end, water side is lower, in operational process, by computer controlled automatic aeration zone tail end DO concentration, be 0.3mg/L, be that whole aeration zone DO concentration can not surpass 0.3mg/L, guarantee that foster oxygenolysis organism, nitration reaction, anti-nitration reaction occur simultaneously.During 3 operation, sewage is controlled and is entered reaction tank mixing zone through distribution reservoir by liquid meter, and from inclined-plate clarifying basin water outlet, gas meter regulates the gas that enters aeration zone.4 make to carry out rapid dilution into water and water outlet by air-lift unit system, this efficient mass transfer mixing process had both been saved plug-flow whipping process in traditional technology, greatly reduce again influent concentration, for microbial growth breeding provides metastable substrate condition simultaneously.5 reaction tank aerating systems make aeration more even, play micro-mixing effect, and large multiplying power reflux ratio also can play to system sludge the effect of stirring.6. can be suitable for multiple nitric wastewater and process, treatment effect is good, stable effluent quality.
Accompanying drawing explanation
Accompanying drawing is the structural representation of the integrated short-cut nitrification and denitrification biological denitrification reactor of the present invention, and wherein Fig. 1 is biological denitrification reactor orthographic plan; Fig. 2 is biological denitrification reactor process schematic representation.
In figure: 1 biological denitrification reactor, 2 water tanks, 3 balanced reservoirs, 4 liquid meters, 5 gas meters, 6 air compressor, 7 air impellers, 8 mudholes, 9 water outlets;
I-aeration zone; II-oxygen-starved area; III-settling region; IV-air plug-flow district.
Embodiment
This equipment is comprised of biological denitrification reactor 1, water tank 2, balanced reservoir 3, liquid meter 4, gas meter 5, air compressor 6, air impeller 7, mudhole 8, water outlet 9 etc.Biological denitrification reactor is made by anticorrosion carbon steel material, and aeration zone volume is 60-100L.
Water inlet is Continuous Flow, water inlet is mixed into air plug-flow district with settling tank recirculation water, air compressor pressurized air is pushed into aeration zone through air impeller by water inlet, aeration zone adopts micro-hole aerator to carry out aeration, and water outlet enters oxygen-starved area, and carry out after anti-nitration reaction oxygen-starved area, water outlet enters settling region, settling region is inclined-plate clarifying basin, the discharge of settling tank water part, and part together enters air plug-flow district with water inlet.This reactor adopts micro-pore aeration, and the aerobic stage of biological treatment, hold concurrently oxygen stage and settling region etc. are concentrated in a pond, and power consumption is low, and oxygen transfer efficiency is high.Aeration zone dissolved oxygen concentration is higher at feed-water end, water side is lower, in process of the test, by computer controlled automatic aeration zone tail end DO concentration, be 0.3mg/L, be that whole aeration zone DO concentration can not surpass 0.3mg/L, guarantee that foster oxygenolysis organism, nitration reaction, anti-nitration reaction occur simultaneously.During operation, sewage is controlled and is entered reaction tank mixing zone through distribution reservoir by liquid meter, and from inclined-plate clarifying basin water outlet, gas meter regulates the gas that enters aeration zone.By air-lift unit system, make to carry out rapid dilution into water and water outlet, this efficient mass transfer mixing process had both been saved plug-flow whipping process in traditional technology, greatly reduced again influent concentration simultaneously, for microbial growth breeding provides metastable substrate condition.Reaction tank aerating system makes aeration more even, plays micro-mixing effect, and large multiplying power reflux ratio also can play to system sludge the effect of stirring.The feature of this equipment has: (1), by air plug-flow district, aeration zone, oxygen-starved area and settling region organic assembling, forms integrated reactor; (2) air plug-flow district adopts air impeller to carry out large multiple proportions circulation; (3) aeration zone adopts micro-pore aeration; (4) whole service process adopts automatization to control the turnover water yield and aeration rate.
Claims (5)
1. an integrated short-cut nitrification and denitrification biological denitrification reactor, is characterized in that: by biological denitrification reactor 1, water tank 2, balanced reservoir 3, liquid meter 4, gas meter 5, air compressor 6, air impeller 7, mudhole 8, water outlet 9 forms, and is divided into air plug-flow district, aeration zone, oxygen-starved area and settling region, biological denitrification reactor is made by anticorrosion carbon steel material, by the aerobic stage of biological treatment, double oxygen stage and settling region concentrate in a pond, aeration zone volume is 60-100L, water inlet is Continuous Flow, adopt air impeller to carry out large multiple proportions circulation, water inlet is mixed into air plug-flow district with settling tank recirculation water, air compressor pressurized air is pushed into aeration zone through air impeller by water inlet, aeration zone adopts micro-hole aerator to carry out aeration, water outlet enters oxygen-starved area, carry out after anti-nitration reaction oxygen-starved area, and water outlet enters settling region, and settling region is inclined-plate clarifying basin, the discharge of settling tank water part, part together enters air plug-flow district with water inlet.
2. integrated short-cut nitrification and denitrification biological denitrification reactor according to claim 1, is characterized in that, aeration zone dissolved oxygen concentration is higher at feed-water end, and water side is lower.
3. integrated short-cut nitrification and denitrification biological denitrification reactor according to claim 1, it is characterized in that, during operation, sewage is controlled and is entered reaction tank mixing zone through distribution reservoir by liquid meter, from inclined-plate clarifying basin water outlet, gas meter regulates the gas that enters aeration zone, by air-lift unit system, makes to carry out rapid dilution into water and water outlet.
4. integrated short-cut nitrification and denitrification biological denitrification reactor according to claim 1, is characterized in that, air plug-flow district adopts air impeller to carry out water circulation.
5. integrated short-cut nitrification and denitrification biological denitrification reactor according to claim 1, is characterized in that, in operational process, by automatic control aeration zone tail end DO concentration, is 0.3mg/L, and whole aeration zone DO concentration can not surpass 0.3mg/L.
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Cited By (9)
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| CN106554080A (en) * | 2015-09-30 | 2017-04-05 | 中国石油化工股份有限公司 | A kind of short-cut nitrification and denitrification biomembrane denitrogenation reactor and rapid biofilm method |
| CN107311410A (en) * | 2017-08-29 | 2017-11-03 | 江西夏氏春秋环境研究院有限公司 | A kind of Short-range efficient simultaneous denitrification interior circulation integrated bio reactor |
| CN107867783A (en) * | 2017-12-08 | 2018-04-03 | 绍兴水处理发展有限公司 | A kind of efficient denitrification water treatment technology |
| CN110902827A (en) * | 2019-12-06 | 2020-03-24 | 山东海景天环保科技股份公司 | High-efficiency biological denitrification moving bed biofilm reactor and operation process thereof |
| CN111675333A (en) * | 2020-06-28 | 2020-09-18 | 合肥初湛环保科技有限公司 | Sewage integration treatment facility based on short distance nitration denitrification |
| CN113233598A (en) * | 2021-05-21 | 2021-08-10 | 光大水务科技发展（南京）有限公司 | Continuous circulating water treatment biochemical pool and water treatment method |
| CN113860494A (en) * | 2021-08-24 | 2021-12-31 | 江苏海洋大学 | Integrated wastewater denitrification process based on synchronous nitrification and denitrification |
| CN115557607A (en) * | 2022-08-31 | 2023-01-03 | 达斯玛环境科技（北京）有限公司 | Integrated biological reaction tank system and method |
| CN115974271A (en) * | 2023-02-07 | 2023-04-18 | 北京沃尔德斯水务科技有限公司 | Magnetic biological reaction system and water treatment process |
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Cited By (11)
| Publication number | Priority date | Publication date | Assignee | Title |
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| CN106554080A (en) * | 2015-09-30 | 2017-04-05 | 中国石油化工股份有限公司 | A kind of short-cut nitrification and denitrification biomembrane denitrogenation reactor and rapid biofilm method |
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| CN107311410A (en) * | 2017-08-29 | 2017-11-03 | 江西夏氏春秋环境研究院有限公司 | A kind of Short-range efficient simultaneous denitrification interior circulation integrated bio reactor |
| CN107867783A (en) * | 2017-12-08 | 2018-04-03 | 绍兴水处理发展有限公司 | A kind of efficient denitrification water treatment technology |
| CN110902827A (en) * | 2019-12-06 | 2020-03-24 | 山东海景天环保科技股份公司 | High-efficiency biological denitrification moving bed biofilm reactor and operation process thereof |
| CN111675333A (en) * | 2020-06-28 | 2020-09-18 | 合肥初湛环保科技有限公司 | Sewage integration treatment facility based on short distance nitration denitrification |
| CN113233598A (en) * | 2021-05-21 | 2021-08-10 | 光大水务科技发展（南京）有限公司 | Continuous circulating water treatment biochemical pool and water treatment method |
| CN113860494A (en) * | 2021-08-24 | 2021-12-31 | 江苏海洋大学 | Integrated wastewater denitrification process based on synchronous nitrification and denitrification |
| CN115557607A (en) * | 2022-08-31 | 2023-01-03 | 达斯玛环境科技（北京）有限公司 | Integrated biological reaction tank system and method |
| CN115557607B (en) * | 2022-08-31 | 2024-02-23 | 达斯玛环境科技（北京）有限公司 | Integrated biological reaction tank system and method |
| CN115974271A (en) * | 2023-02-07 | 2023-04-18 | 北京沃尔德斯水务科技有限公司 | Magnetic biological reaction system and water treatment process |
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