CN103588299B - A kind of integrated short-cut nitrification and denitrification biological denitrification reactor - Google Patents
A kind of integrated short-cut nitrification and denitrification biological denitrification reactor Download PDFInfo
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- CN103588299B CN103588299B CN201310474937.8A CN201310474937A CN103588299B CN 103588299 B CN103588299 B CN 103588299B CN 201310474937 A CN201310474937 A CN 201310474937A CN 103588299 B CN103588299 B CN 103588299B
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Abstract
The present invention relates to a kind of sewage disposal device, be specifically related to a kind of integrated short-cut nitrification and denitrification biological denitrification reactor.Object is large in order to solve existing short-cut nitrification and denitrification biological denitrification process occupation area of equipment, and capital cost is high, and running debugging needs professional to control, the present situation that operational management is very complicated.This equipment, by air plug-flow district, aeration zone, oxygen-starved area and settling region organic assembling, forms integrated reactor.Equipment is made up 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.This equipment can realize stable short-cut nitrification and denitrification process, and it is simple to have structure, and floor space is little, and power consumption is low, and oxygen transfer efficiency is high, the advantage that automatic controlling level is high.Can be applicable to multiple nitric wastewater process, treatment effect is good, stable effluent 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, cause water pollution, water body environment quality be reduced, endangers the whole ecosystem.Therefore in recent years, people start to pay attention to the impact that polluted by nitrogen causes environment, and progressively carry out every engineering that nitrate pollution controls, the various technique for denitrogenation processing is developed in technical field of sewage.
At present, the main treatment technology of domestic and international nitrogenous effluent mainly contains following several: Physical, chemical method, physico-chemical processes and biological process.Physical and chemical method are very restricted in real project, Yin Qiyi causes secondary pollution and processing costs is high, and bio-denitrification technology overcomes the shortcoming of Physical and chemical method generation, and operating process is simple during application, removal efficiency is high, so bio-denitrification technology becomes the important research direction of water pollutions process field gradually.
Traditional biological denitrification process is that aerobic nitrification process and anoxic denitrification complete in succession or alternately, first ammonifying bacteria be NH by organonitrogen oxygenolysis under effect
4 +-N; Then by autotrophic type nitrobacteria by NH
4 +-N is oxidized to NO
2 --N and NO
3 --N; Then 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, thus reach the object of denitrogenation.Traditional biological denitrification process is a complete bio denitrification process, comprises ammonification, and nitrification and denitrification are formed.Advantage: the reaction process such as organic removal and ammonification, nitrated, denitrification is carried out respectively in relatively independent reactor, and reach optimal state by technology controlling and process, thus various speed of reaction is all very fast, and reaction is carried out more thorough.Shortcoming: processing unit is many, capital construction cost is high, and operational management is complicated.
Denitrogenate process complexity because traditional biological denitrification process exists, energy consumption is many, the shortcoming that the time is long, and therefore Chinese scholars researchs and develops a kind of Process of Biological Nitrogen Removal, i.e. short-cut nitrification and denitrification, is characterized in nitrifying process to control at HNO
2stage and stopping, stop NO
2 -be further oxidized to NO
3 -, directly carry out denitrification subsequently.The advantage of short-cut nitrification and denitrification mainly contains: (1) reduces by the oxygen requirement of about 25%, reduces energy consumption; (2) reduce by the organic carbon source of about 40%, 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) dosage of alkali is reduced.
At present, for realizing short-cut nitrification and denitrification biological denitrification process, main path is in traditional biological denitrification process, 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, shortcoming is: (1) occupation area of equipment is large, and capital cost is high, and running debugging needs professional to control, and operational management is very complicated.
Summary of the invention
In order to solve the problem, the object of this invention is to provide a kind of integrated short distance synchronous nitration and denitrification biological denitrification reactor, by simply controlling 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 of Automated condtrol.
The present invention's integration short-cut nitrification and denitrification biological denitrification reactor, 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 up of 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, air impeller is adopted to carry out large multiple proportions circulation, water inlet and settling tank recirculation water are mixed into air plug-flow district, water inlet is pushed into aeration zone through air impeller by air compressor pressurized air, aeration zone adopts micro-hole aerator to carry out aeration, water outlet enters oxygen-starved area, after anti-nitration reaction is carried out in oxygen-starved area, water outlet enters settling region, settling region is inclined-plate clarifying basin, settling tank water part is discharged, 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 to enter reaction tank mixing zone through distribution reservoir by liquid meter, from inclined-plate clarifying basin water outlet, gas meter regulates the gas entering aeration zone, makes to carry out rapid dilution into water and water outlet by air-lift unit system, and air plug-flow district adopts air impeller to carry out water circulation.
Be 0.3mg/L by computer controlled automatic aeration zone tail end DO concentration in operational process, namely whole aeration zone DO concentration can not more than 0.3mg/L.
The present invention has following beneficial effect: the aerobic stage of biological treatment, hold concurrently oxygen stage and settling region etc. concentrate in a pond by 1, and greatly reduce the floor space of equipment, and power consumption is low, oxygen transfer efficiency is high.2 aeration zone dissolved oxygen concentrations are higher at feed-water end, water side is lower, be 0.3mg/L by computer controlled automatic aeration zone tail end DO concentration in operational process, namely whole aeration zone DO concentration more than 0.3mg/L, can not ensure that foster oxygenolysis organism, nitration reaction, anti-nitration reaction occur simultaneously.During 3 operation, sewage is controlled to enter reaction tank mixing zone through distribution reservoir by liquid meter, and from inclined-plate clarifying basin water outlet, gas meter regulates the gas entering 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 eliminated plug-flow whipping process in traditional technology, greatly reduce influent concentration again, for microbial growth breeding provides metastable substrate condition simultaneously.5 reaction tank aerating systems make aeration more even, and play microring array effect, large multiplying power reflux ratio also can play the effect of stirring to system sludge.6. can be suitable for multiple nitric wastewater process, treatment effect is good, stable effluent quality.
Accompanying drawing explanation
Accompanying drawing is the structural representation of the present invention's integration short-cut nitrification and denitrification biological denitrification reactor, 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 made up 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 up of anticorrosion carbon steel material, and aeration zone volume is 60-100L.
Water inlet is Continuous Flow, water inlet and settling tank recirculation water are mixed into air plug-flow district, water inlet is pushed into aeration zone through air impeller by air compressor pressurized air, aeration zone adopts micro-hole aerator to carry out aeration, and water outlet enters oxygen-starved area, after anti-nitration reaction is carried out in oxygen-starved area, water outlet enters settling region, settling region is inclined-plate clarifying basin, and settling tank water part is discharged, and part together enters air plug-flow district with water inlet.This reactor adopts micro-pore aeration, and concentrate in a pond by the aerobic stage of biological treatment, hold concurrently oxygen stage and settling region etc., 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, be 0.3mg/L by computer controlled automatic aeration zone tail end DO concentration in process of the test, namely whole aeration zone DO concentration more than 0.3mg/L, can not ensure that foster oxygenolysis organism, nitration reaction, anti-nitration reaction occur simultaneously.During operation, sewage is controlled to enter reaction tank mixing zone through distribution reservoir by liquid meter, and from inclined-plate clarifying basin water outlet, gas meter regulates the gas entering aeration zone.Make to carry out rapid dilution into water and water outlet by air-lift unit system, this efficient mass transfer mixing process had both eliminated plug-flow whipping process in traditional technology, greatly reduced influent concentration again simultaneously, for microbial growth breeding provides metastable substrate condition.Reaction tank aerating system makes aeration more even, and play microring array effect, large multiplying power reflux ratio also can play the effect of stirring to system sludge.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 the Automated condtrol turnover water yield and aeration rate.
Claims (1)
1. an integrated short-cut nitrification and denitrification biological denitrification reactor, 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, biological denitrification reactor is divided into air plug-flow district, aeration zone, oxygen-starved area and settling region, biological denitrification reactor is made up of 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, air plug-flow district adopts air impeller to carry out large multiple proportions circulation, water inlet and settling region recirculation water are mixed into air plug-flow district, water inlet is pushed into aeration zone through air impeller by air compressor pressurized air, aeration zone adopts micro-hole aerator to carry out aeration, water outlet enters oxygen-starved area, after anti-nitration reaction is carried out in oxygen-starved area, water outlet enters settling region, settling region is inclined-plate clarifying basin, settling tank water part is discharged, part together enters air plug-flow district with water inlet, it is characterized in that: aeration zone dissolved oxygen concentration is higher at feed-water end, water side is lower, during operation, sewage is controlled to enter air plug-flow district through balanced reservoir by liquid meter, from inclined-plate clarifying basin water outlet, gas meter regulates the gas entering aeration zone, make to carry out rapid dilution into water and water outlet by air-lift unit system, can not more than 0.3mg/L by computer controlled automatic whole aeration zone DO concentration in operational process.
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| CN103588299B true CN103588299B (en) | 2015-08-12 |
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| CN106554080B (en) * | 2015-09-30 | 2019-06-11 | 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 |
| CN113860494B (en) * | 2021-08-24 | 2023-07-18 | 江苏海洋大学 | Integrated wastewater denitrification process based on synchronous nitrification and denitrification |
| 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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