CN100410189C - Nitration denitrification integral type sewage denitrification biomembrane reactor - Google Patents
Nitration denitrification integral type sewage denitrification biomembrane reactor Download PDFInfo
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- CN100410189C CN100410189C CNB2006101192907A CN200610119290A CN100410189C CN 100410189 C CN100410189 C CN 100410189C CN B2006101192907 A CNB2006101192907 A CN B2006101192907A CN 200610119290 A CN200610119290 A CN 200610119290A CN 100410189 C CN100410189 C CN 100410189C
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Abstract
The invention discloses a column-shaped denitrifying reactor through integrated nitrated and denitrificated biological film method in the environmental protective technique domain, which comprises the following parts: water collecting system, aerating reacting region, anaerobic region and sediment region, wherein the aerating reacting region is full of suspension fill with aerating pipe on the bottom; the gas inlet and water outlet are opened on the bottom; the gas inlet connects aerating pipe with top opening interconnecting hole; the peole-shaped mud baffle board is set in the sediment region with hole on the top, which connects one end of gas collecting pipe; the other end of gas collecting pipe pierces the water collecting system; the mud drainage valve lies on one side of sediment region under the mud baffle board; the bottom of water collecting system possesses overflow dam with water drainage pipe on one side; the sampling valve is set around aerating reacting region and sediment region.
Description
Technical field
The invention belongs to environmental technology field, be specifically related to a kind of nitration denitrification integral type biomembrance process denitrification reactor.
Background technology
Denitrification percent has only 20-50% after the municipal effluent second-stage treatment, and water outlet total nitrogen content height, and the environmental pollution of China has been brought very big pressure, and too much nitrogen is directly threatening human healthy in the tap water.Therefore, trade effluent and sanitary sewage must reach safe emission standard through strict denitrogenation processing before entering receiving water body.Traditional denitrification process by two of nitrification and denitrifications independently process realize, by nitrifier and denitrifying bacteria (on space) in different reactors, make the removal that intermittently aerobic and anaerobic environment (on the time) are realized nitrogen in the perhaps same reactor respectively.Traditional denitrification process plays an important role in big-and-middle-sized sewage work, but for small-scale trade effluent and municipal effluent, traditional technology investment cost height, big, the operational management difficulty height of floor space.In recent years, along with people to the going deep into of biological denitrification process understanding, some new biological denitrificaion theories have appearred, for example aerobic denitrification, autotrophic denitrification, heterotrophic nitrification, nitration denitrification, short-cut nitrification and denitrification and Anammox etc. simultaneously.Because the denitride amount that aerobic denitrification and autotrophic denitrification cause is insignificant, to such an extent as to can't be applied to engineering practice, heterotrophic nitrification owing to have only when COD/N＞10 just can obviously exist simultaneously, so the engineering using value is also little.Therefore, the emphasis of research mainly is while nitration denitrification, short distance nitration (nitrite type is nitrated) denitrification and Anammox at present, has also produced a series of corresponding technologies thus, for example SND, SHARON, OLAND, CANON and ANAMMOX etc.These technology can be saved carbon source and energy consumption, but ripe not enough, microbial process mechanism and control condition also imperfectly understand, and remain further to be studied.
In recent years, though occurred the patent and the application of integration denitrification reactor both at home and abroad.As a kind of integrated up-flow formula biological denitrification reactor that is used to handle nitrogenous organic waste water of inventions such as Yang Min, the reactor top and the bottom are respectively aerobic attached type biological growth system and the floated biological growth of anoxic system.A kind of integrated three-dimensional circulating sewage biological dephosphorize denitrification reactor and working method such as Liu Jun is new, reactor is divided into inside and outside two portions by dividing plate, and inside is the mixed solution race way, is divided into aerobic zone and oxygen-starved area by dividing plate.External patent has, and the LAMBERT RUSSELLE (US2001099261620011116) of the U.S. uses fluidized-bed process in the reactor of a septic tank structure.The TOKIDA SATOSHI (JP2002026481220020910) of Japan adopts the one reactor of microbial immobilized technology, and aerobic zone is nitrobacteria fixedly, and anaerobic zone is denitrifying bacterium fixedly.But these reactors exist still that floor space is big, energy consumption is high, need additional carbon and be not easy to shortcomings such as bookkeeping.
Summary of the invention
The object of the present invention is to provide a kind of occupation of land province, economical and convenient, can remove the nitration denitrification integral type biomembrance process denitrification reactor of organism and ammonia nitrogen simultaneously.
The nitration denitrification integral type biomembrance process denitrification reactor that the present invention proposes, this reactor is column structure, be composed in series integral type (its structure as shown in Figure 1) by receiving water system 2, settling region 14, oxygen-starved area 13 and aeration reaction zone 11 from top to bottom, aeration reaction zone 11 is a column structure that keeps flat, be embedded in the bottom of reactor, wherein:
Settling region 14 is by effuser 1, form every mud plate 5 and mud valve 6, be " people " font structure every mud plate 5, the top drilling of herringbone, this hole connects effuser 1 one ends, effuser 1 the other end passes receives the outside gas extractor of water system 2 connections, mud valve 6 is positioned at settling region 14 outside sides, and is positioned at every mud plate 5 bottoms;
Receive water system 2 and be made up of water shoot 3 and overflow weir 15, overflow weir 15 is positioned at receives water system 2 bottoms, and water shoot 3 is positioned at receives water system 2 one sides.
Among the present invention, be the 3-6 group every mud plate 5.
Among the present invention, aeration tube 8 is the 1-8 root.
Among the present invention, be provided with sampling valve 4 around the aeration reaction zone 11, sampling valve 4 is 2-8.
Among the present invention, be provided with sampling valve 4 around the settling region 14, sampling valve 4 is 2-8.
Among the present invention, mud valve 6 is 2-8.
Working process of the present invention is as follows: sanitary sewage or trade effluent enter aeration reaction zone 11 through after the pre-treatment by water inlet pipe 10.Microbial film on the floating stuffing 7 provides at aeration tube 6 under the condition of oxygen, and as nutritive substance, microbial film constantly upgrades on the one hand with the organism in the water inlet, and sewage has obtained purification on the other hand.Sewage through rough purification enters oxygen-starved area 13 by communicating aperture 12, and 13 carry out further denitrification reaction in the oxygen-starved area.Excess sludge is in precipitation on mud plate 5, and covers gradually on its surface and to form one deck microbial film, can deep purifying waste water, reduce the SS in the water outlet.The excess sludge of settling region 14 can regularly be discharged through mud valve 6, and water outlet is discharged by water shoot 3 through overflow weir 15.
Advantage of the present invention is as follows:
(1) main reaction region of the present invention is the aeration reaction zone of bottom, and aeration reaction zone adopts aerobic suspended filler biofilm system, and this helps the growth and breeding of poky nitrifier, guarantee not can with the competition of heterotrophic bacterium in be eliminated.The successive aeration makes the renewal speed of carrier biofilm very fast, improves the ability of system's anti-shock loading.
(2) position of inlet mouth is in reactor lower part position slightly on the upper side, floating stuffing is in dynamic the flowing, and fluidised form is even, does not have the dead angle, and power consumption is low.
(3) sizeable hole on the aeration tube, the suspended state of existing enough power filler, guarantee the mass transfer of oxygen again, make the heterotroph metabolism of biofilm surface vigorous, the ability of degradation of organic substances increases, remove most organism in the water, the small molecules carbohydrate of generation helps the growth of denitrifying bacterium, for follow-up denitrogenation reflection provides prerequisite.
(4) further strengthened denitrifying effect in the anoxic zones of aeration reaction zone and settling region intersection, in addition,, had certain phosphorus removal functional through regularly discharging every the sedimentary mud of mud plate.
(5) can play sedimentation mud on the one hand every the mud plate, improve the effect of effluent quality, on the other hand, the microbial film that adheres on the mud plate also can play the effect that purifies water.
The present invention considers the actual demand of wastewater treatment in China in conjunction with the domestic and international research present situation, has developed nitration denitrification integral type sewage denitrification biomembrane reactor, removes when realizing organic pollutant and nitrogen.The suspended filler biofilm system of bottom can finish the function of nitrification and denitrification simultaneously.The aeration tube position makes the fluidised form of filler even, and power consumption is lower.Anoxic that mediates or anaerobism functional zone are that carbon source is further carried out denitrification function with the organism in the sewage.Admixture of the present invention is fine, does not need additional carbon and basicity, saves resource.The sedimentation effect of traverse baffle is fine, has remedied the high deficiency of biomembrane process water outlet SS content.Floor space of the present invention is little, is convenient to operational administrative, saves energy consumption, can reach the function of removing organism and denitrogenation simultaneously, agrees with mutually with the idea that realizes human social.
Description of drawings
Fig. 1 is a structural diagrams of the present invention.
Number in the figure: 1 effuser, 2 receive water system, 3 water shoots, 4 sampling valves, 5 every the mud plate, 6 mud valves, 7 floating stuffings, 8 aeration tubes, 9 inlet mouths, 10 water-ins, 11 aeration reaction zones, 12 communicating apertures, 13 oxygen-starved areas, 14, settling region, 15 overflow weirs.
Embodiment
Further describe the present invention below in conjunction with accompanying drawing by embodiment.
Embodiment 1
Be rectangular parallelepiped on the reactor monolith, have two portions to constitute.The bottom is a right cylinder that is keeping flat, be aeration reaction zone 11, aeration reaction zone 11 is interior attached to floating stuffing 7, biofilm system on the floating stuffing 7 helps the breeding of long nitrifying bacteria community generation time, the position of upper middle, aeration reaction zone 11 bottom is provided with 3 aeration tubes 8, half zone of the arc on right cylinder top has circular communicating aperture 12, be beneficial to inside reactor air-flow promotion floating stuffing and be flow state, prevent the short stream of gas, degradation of organic substances effectively, and ammonia-state nitrogen is oxidized to nitric nitrogen, inner anoxic and anaerobic microenvironment make the denitrification function that microbial film can operating part.The bottom of aeration reaction zone 11 is provided with inlet mouth 9 and water-in 10, and inlet mouth 9 connects aeration tube 8.The top of aeration reaction zone 11 separates with cylindrical arc, extending upward is an accurate rectangle, be settling region 14, be built-in with 3 groups every mud plate 5 and 1 effuser 1, every group all is " people " font every mud plate 5, and the top drilling of its " people " font is positioned at one group of end that connects effuser 1 every the perforate position of mud plate 5 of topmost, effuser 1 is upward through receives water system 2, extends to the outside.Be distributed with 4 mud valves 6 around the settling region 14, and mud valve 6 is positioned at every mud plate 5 bottoms, regularly gets rid of mud by mud valve 6.The top that is positioned at reactor is received in the water system 2 and is provided with overflow weir 15 for receiving water system 2, and a side of receiving water system 2 is provided with water shoot 3, through discharging by overflow weir 15 by the sewage after the outside purification, is discharged outside the reactor by water shoot 3.The settling region 14 and aeration reaction zone 11 outsides are provided with sampling valve 4.The quantity of sampling valve 4 is 4.The mediate junction of cylindrical vessel and rectangular vessel forms the oxygen-starved area, is that carbon source is further carried out denitrification function with the organism in the sewage, and mud can regularly be discharged.Because the admixture of whole reactor is preferable, can be used as the electron donor of top oxygen-starved area through the low-carbon (LC) organism that generates behind the aerobe membrane degradation, and the nitrated acidity of bringing can be neutralized very soon also, be beneficial to the carrying out of nitration reaction.Aerobic biologic membrane helps the best effect of different flora performances with the oxygen-starved area in different spatial distributions, and in addition, what biofilm system was special becomes possibility for environment makes nitration denitrification.Sedimentation effect every the mud plate is fine, has remedied the high deficiency of biomembrane process water outlet SS content.The whole reactor floor space is little, is convenient to operational administrative, can reach the function of removing organism and denitrogenation.
The device of above-mentioned gained is used to handle the somewhere sanitary sewage, and this sanitary sewage directly enters reactor after just sinking.The water quality situation of the sanitary sewage of handling is: COD
Cr100-300mg/L, BOD
560-200mg/L, SS 110-320mg/L, TN30-100mg/L, TP 4.2-6.1mg/L, NH
3-N 20-80mg/L, pH 7.4-8.5, temperature 11-28 ℃.When the reactor waterpower residence time is 4-6h, and the aeration reaction zone dissolved oxygen concentration is 1.5-2.0mg/L, and the oxygen-starved area dissolved oxygen concentration is 0.4-0.7mg/L.COD
CrClearance be 80-90%, BOD
5Clearance be 90-95%, nitrogen removal rate reaches 85-90%, the water outlet ammonia nitrogen is less than 1mg/L, COD
CrLess than 50mg/L, reactor removal organism and denitrification effect are obvious, and the reactor capacity of resisting impact load is stronger, and effluent quality reaches " municipal sewage plant's pollutant emission standard " one-level A standard (GB18918-2002).
Claims (6)
1. nitration denitrification integral type biomembrance process denitrification reactor, it is characterized in that reactor is column structure, be composed in series integral type by receiving water system (2), settling region (14), oxygen-starved area (13) and aeration reaction zone (11) from top to bottom, aeration reaction zone (11) is a column structure that keeps flat, be embedded in the bottom of reactor, wherein:
Aeration reaction zone (11) is made up of floating stuffing (7), aeration tube (8), inlet mouth (9), water-in (10) and communicating aperture (12), floating stuffing (7) is full of in the aeration reaction zone (11), aeration tube (8) is positioned at aeration reaction zone (11) bottom, inlet mouth (9) and water-in (10) lay respectively at aeration reaction zone (11) bottom, inlet mouth (9) connects aeration tube (8), and communicating aperture (12) is positioned at aeration reaction zone (11) top;
Settling region (14) is by effuser (1), form every mud plate (5) and mud valve (6), be " people " font structure every mud plate (5), the top drilling of herringbone, this hole connects effuser (1) one end, effuser (1) the other end passes receipts water systems (2) and connects outside gas extractor, mud valve (6) is positioned at the outside side in settling region (14), and is positioned at every mud plate (5) bottom;
Receive water system (2) and be made up of water shoot (3) and overflow weir (15), overflow weir (15) is positioned at receives water system (2) bottom, and water shoot (3) is positioned at receives water system (2) one sides.
2. nitration denitrification integral type biomembrance process denitrification reactor according to claim 1 is characterized in that being the 3-6 group every mud plate (5).
3. nitration denitrification integral type biomembrance process denitrification reactor according to claim 1 is characterized in that aeration tube (8) is the 1-8 root.
4. nitration denitrification integral type biomembrance process denitrification reactor according to claim 1, it is characterized in that aeration reaction zone (11) around be provided with sampling valve (4), sampling valve (4) be that 2-8 is individual.
5. nitration denitrification integral type biomembrance process denitrification reactor according to claim 1, it is characterized in that settling region (14) around be provided with sampling valve (4), sampling valve (4) be that 2-8 is individual.
6. nitration denitrification integral type biomembrance process denitrification reactor according to claim 1 is characterized in that mud valve (6) is 2-8.
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| CN101565238B (en) * | 2009-06-12 | 2013-01-02 | 中国环境科学研究院 | Novel internal circulation moving bed biological film reactor |
| CN102249493B (en) * | 2011-06-22 | 2012-12-05 | 浙江大学 | Spiral-flow type integral reactor for processing rural domestic sewage |
| CN102557353B (en) * | 2012-02-08 | 2013-08-21 | 康群 | Two-segment aerobic-anaerobic ammonia oxidization reactor |
| CN105923771B (en) * | 2016-06-17 | 2019-06-04 | 华北水利水电大学 | A kind of self-loopa biological denitrification reactor |
| CN107973408B (en) * | 2017-12-26 | 2024-02-02 | 长沙理工大学 | Biological film reinforced denitrification device |
| CN107879487B (en) * | 2017-12-26 | 2024-02-02 | 长沙理工大学 | Biological denitrification integrated device |
| CN109970193B (en) * | 2019-04-15 | 2024-04-09 | 浦华环保有限公司 | Enhanced denitrification device and equipment |
| CN110526390A (en) * | 2019-09-16 | 2019-12-03 | 杭州金溢建设集团有限公司 | Sewage water intensification denitrification system and its control method |
| CN110902824B (en) * | 2019-11-14 | 2024-04-05 | 四川隆科旭环保科技有限公司 | Up-flow self-circulation moving bed biomembrane sewage treatment reactor |
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