CN101973678A - Bioaugmentation treatment technology of high ammonia nitrogen wastewater - Google Patents
Bioaugmentation treatment technology of high ammonia nitrogen wastewater Download PDFInfo
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- CN101973678A CN101973678A CN 201010530096 CN201010530096A CN101973678A CN 101973678 A CN101973678 A CN 101973678A CN 201010530096 CN201010530096 CN 201010530096 CN 201010530096 A CN201010530096 A CN 201010530096A CN 101973678 A CN101973678 A CN 101973678A
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Abstract
The invention relates to a bioaugmentation treatment technology of the high ammonia nitrogen wastewater. The treatment technology is characterized in that under the condition that dissolved oxygen exists in the high ammonia nitrogen wastewater, an aerobic pool, an aerobic filter and a membrane pool are established, wherein by utilizing the metabolism of the aerobic microorganism, high concentration of organic substances are degraded, the organic substances with high molecular weight and energy are converted to substances with low molecular weight and energy; the aerobic pool adopts internal circulation and large-scale external circulation hydraulic agitation; and the aerobic filter is filled with novel fixed enzyme-floating filler and immobilized microorganism and microporous aeration and jet aeration are combined for aeration, thus the flow pattern of the nitrification filter is improved. Compared with the prior art, the system of the invention has high sludge concentration and the corresponding volume loading is also high, thus the floor space is small and the capital cost is low; the conversion rate and utilization rate of atmospheric oxygen is high, the effect of mass transfer is good, the anti-shock loading capability of the system is high, the effluent quality is stable; the operating cost is low; the density is increased relatively, the solid-liquid separating effect is good and the yield of excess sludge is low.
Description
Technical field
The present invention relates to a kind of high ammonia-nitrogen wastewater treatment process, belong to water-treatment technology field, relate in particular to a kind of biological reinforced treatment process of high ammonia-nitrogen wastewater.
Background technology
In recent years, industry developments such as coking, agricultural chemicals, chemical fertilizer, chemical industry, rare-earth smelting are rapid, correspondingly discharged a large amount of high-concentration ammonia nitrogenous wastewaters.A large amount of ammonia nitrogens enter water body, can cause the eutrophication of water body, and body eutrophication not only reduces the dissolved oxygen in the water, destroy the original natural ecological environment of water body, and can influence waterhead area water safety and health, the original function of forfeiture water body.For the municipal sewage plant, entering of high ammonia-nitrogen wastewater will cause sewage disposal plant effluent to exceed standard, and influence the normal operation of sewage work.
The processing of high-concentration ammonia nitrogenous wastewater is a difficult point all the time.Materilization freatment method is because investment and working cost are higher, and causes easily and secondary pollution limited its use range greatly.The method of biological denitrificaion is simple with its technology, advantages such as operation and maintenance cost is low, non-secondary pollution are widely used in the treatment process of nitrogenous effluent.But traditional biological denitrification process such as A/O method, A
2/ O method etc., still exist with the following problem: 1. nitrifying bacteria community is difficult to keep higher biological concentration slowly owing to rate of propagation, therefore causes system's total hrt longer, and it is lower to load, and has increased initial cost and working cost; 2. a little less than the impact resistance, when influent quality changed greatly, running situation was had a strong impact on.3. poor to high ammonia nitrogen water treatment capacity, when ammonia nitrogen concentration is higher than 500mg/L in the biochemical system, inhibition that can be serious to microorganisms, so influence system steady running and effluent quality.
Summary of the invention
The present invention in order to overcome the deficiencies in the prior art and defective, holds back the mode that the technology three combines with microbial immobilized, jet combined aeration and film just, and a kind of biological reinforced treatment process of high ammonia-nitrogen wastewater is provided.
Technical scheme of the present invention is as follows:
Design a kind of biological reinforced treatment process of high ammonia-nitrogen wastewater, it is characterized in that in high ammonia-nitrogen wastewater, having under the condition of dissolved oxygen existence, set up anoxic pond, aerobic filter tank and membrane cisterna, make good use of the metabolism of oxygen animalcule and impel high organic matter degradation, high molecular, high-octane organism are converted into lower molecular weight, low-energy material: described anoxic pond pond adopts internal recycle and vast scale outer circulation waterpower to stir; Described aerobic filter tank adopts the floating filler of fixed novel enzyme to fill, and immobilized microorganism is adopted micro-pore aeration and jet-flow aeration associating aeration aerating, improves nitrated filter tank fluidised form; Described terminal membrane cisterna adopts the ultra-filtration membrane water outlet.
Described anoxic pond is not provided with agitator, leans on the internal reflux of anoxic pond and the external reflux of vast scale nitrification liquid to provide waterpower to stir, and realizes that the muddy water of anoxic pond mixes fully.
The floating filler of the fixed novel enzyme that adopt in described aerobic filter tank is that enzyme is floating
The series ionic enzymatic suspended filler, the duplicature of filler and the special construction of void layer have been realized, improve packing specific area and porosity greatly, thereby whole biochemical reaction district microbial biomass is increased, effective biological concentration is about conventional activated sludge method and biomembrance process 2-5 times, and detergent power is significantly improved.
Micro-pore aeration and jet-flow aeration associating aeration aerating are adopted in described aerobic filter tank.
When handling high organism and high ammonia-nitrogen wastewater, described aerobic filter tank can take the mode of plural serial stage to move.
Describedly be provided with the vast scale nitrification liquid and mud is back to anoxic pond, and enter biochemical system after water inlet mixes, the ammonia nitrogen concentration in the reduction reaction tank alleviates the restraining effect to microorganism.
Described terminal membrane cisterna adopts membrane bioreactor to substitute second pond, and effluent quality is good, and film has been held back nearly all microorganism simultaneously, and sludge concentration is very high in the system, and organic loading is significantly improved.
Described membrane cisterna is provided with the discharging excess sludge and enters processed.
The biological reinforced treatment process of the high ammonia-nitrogen wastewater described in the present invention has merged the advantage that microbial immobilized, jet combined aeration and film are held back the technology three, and its principle of work is as follows:
Aerobic filter tank relies on microbial film and the common degradation of organic substances of suspension active sludge that is fixed in the floating filling surface of novel enzyme, the quantity of effective microbe increases greatly in the reaction tank, the biochemical treatment ability is significantly increased, the adding of the floating filler of enzyme simultaneously makes the microorganism survival environment be transformed into the gas, liquid, solid three-phase by original gas, liquid two-phase, thisly change microorganism into and created abundanter existence form, form the combined type ecosystem that is mutually related on the more complicated both direction in length and breadth.Vertically, microorganism has constituted a complex biological chain of being made up of a plurality of nutrition ranks such as bacterium, fungi, algae, protozoon, metazoans.Transversely, direction along liquid to carrier, constituted the aerobic type that suspends, adhere to aerobic type, adhere to facultative type, adhered to the various respiratory type of anaerobic type, the microflora of nutrient type, thereby the system that makes can finish the task of organic removal and synchronous nitration and denitrification simultaneously.
Jet-flow aeration technology has merged current high-speed jet aeration, thing is strengthened transmission mutually, technology such as turbulent shear, utilize water circulating pump to promote High-Pressure Water and inject reactor through shower nozzle, because suction function sucks a large amount of air simultaneously, the acting in conjunction of current and air-flow makes the shower nozzle below form high speed turbulent shear district again, the gas dispersion that sucks is become tiny bubble, the combined sewage that is rich in dissolved oxygen is after guide shell reaches reactor bottom, formation circulation upwards backflows again, jet under shearing again, operation so moves in circles, sewage is by oxygenation repeatedly, and bubble and microorganism cenobium are constantly sheared refinement, and forms fine and close tiny flocs unit.Unite micro-pore aeration simultaneously, oxygen utilization rate height in the aerobic filter tank, mass transfer effect is good, the processing efficiency height.
The terminal membrane bioreactor that adopts substitutes second pond, effluent quality is good, film has been held back nearly all microorganism simultaneously, make that sludge concentration is higher than conventional activated sludge method and biomembrance process far away in the system, organic loading is significantly improved, function row microorganisms such as ammonia oxidation bacteria, nitrifier obtain enrichment significantly simultaneously, have further guaranteed good ammonia nitrogen removal effect.
The present invention has following advantage than prior art:
(1) floor space is few, and capital cost is low.Appended microbial film and terminal membrane cisterna crown_interception on the floating filler of enzyme in the aerobic filter tank make that sludge concentration is far above the routine biochemistry system in the system, and the quantity of effective microbe increases greatly in the corresponding system, and volumetric loading is significantly improved; The microbial film of the floating filling surface of enzyme exists to a certain degree synchronous nitration and denitrification simultaneously, and the factor of above-mentioned two aspects makes the pond hold greatly minimizing, thereby reduces floor space and initial cost.Than traditional denitrification process, initial cost of the present invention will be saved more than 30%.
(2) atmospheric oxygen trans-utilization rate height, mass transfer effect is good.The filling of the floating filler of enzyme, the bubble that is discharged for the bottom micro-pore aeration plays secondary shearing and prevents and poly-system, correspondingly air and water, microorganism mass transfer time have been prolonged, jet-flow aeration and filler are tackled formed turbulent hydraulic shear simultaneously, make refinement of bubble height and homodisperse, determined the trans-utilization rate height of atmospheric oxygen in the system, mass transfer effect is good.
(3) system's capacity of resisting impact load is strong, and effluent quality is good.Enzyme floats appended microbial film and terminal membrane cisterna crown_interception on the filler in the aerobic filter tank, make that sludge concentration is far above the routine biochemistry system in the system, simultaneously jet-flow aeration makes that mud mixed liquid mixes more fast in the aerobic filter tank, evenly, so the ability of system's anti impulsion load is stronger.Synchronous nitration in the aerobic filter tank and denitrification have also alleviated in the system inhibitory substance to the influence of microorganism.Technology also adopts the vast scale nitrification liquid to reflux, and ammonia nitrogen in high density and other inhibitory substance concentration of water inlet are diluted, and also makes impact load the influence of system further be weakened stable effluent quality.
(4) have short distance nitration and synchronous denitrification in the aerobic filter tank, working cost is low.Because appended microbial film forms aerobic, anoxic, anaerobic environment, existence when helping nitrococcus and denitrifying bacteria from outside to inside successively on the floating filler of enzyme.On the one hand, the product of nitrococcus can be used as the substrate of denitrifying bacteria, simultaneously, can utilize a part of COD in the waste water during denitrification again, thereby saves degraded carbon source institute oxygen-consumption; And the basicity that anti-nitration reaction produced also can be mended nitrated required a part of basicity by Mi, thereby reduces the dosage of basicity.
(5) good effect of separating solid from liquid, excess sludge production is less.Because the contained animal component of mud of biofilm detachment is more and proportion is bigger, and the mud granule individuality is bigger, thereby has good sludge settling property, be easy to solid-liquid separation, and food chain is longer in the microbial film, thereby surplus sludge volume reduces obviously.The higher shearing resistance of jet-flow aeration makes the microorganism micelle constantly be cut apart refinement, and the pore of micelle inside reduces, and its density is increased relatively, and cumulative volume reduces.High jet shearing resistance in the aerobic filter tank and the high aeration intensity of terminal membrane cisterna make that microbial metabolism is very fast in the system, have also reduced surplus sludge volume.
(6) easy for installation, be easy to construction, especially with the obvious advantage in changing the expansion engineering.
Description of drawings
Fig. 1 is a process flow sheet of the present invention.
Embodiment
The invention will be further described below in conjunction with Fig. 1 and 3 embodiment, but the present invention is not only limited to these embodiment.
Embodiment 1, adopts the present invention to handle certain asccharin factory waste water, adopts the combination process of one-level anoxic pond+three grades of aerobic filter tank+membrane cisternas, and the floating filler of the enzyme that is adopted is that enzyme is floating
The series ionic enzymatic suspended filler.Water inlet COD
CrConcentration is 2000-13000mg/L, NH
3-N concentration is 1000-5500mg/L, 28-32 ℃ of anoxic pond temperature, and aerobic filter tank temperature 25-30 ℃, total hrt 120h need not additional carbon, and only need replenish basicity about 180mg/L (with CaCO
3Meter), water outlet COD
CrConcentration is 20-300mg/L, NH
3-N concentration is 0.65-30mg/L.COD
CrAverage removal rate more than 90%, NH
3The average removal rate of-N is more than 99%.
Embodiment 2, adopt the present invention to handle fertilizer plant's waste water, adopt the combination process of one-level anoxic pond+two-stage aerobic filter tank+membrane cisterna, and the floating filler of the enzyme that is adopted is that enzyme is floating
The series ionic enzymatic suspended filler.Water inlet COD
CrConcentration is 300-700mg/L, NH
3-N concentration is 200-400mg/L, 30-35 ℃ of anoxic pond temperature, and aerobic filter tank temperature 20-30 ℃, total hrt 72h only need add 200mg/L left and right sides methyl alcohol as carbon source, water outlet COD
CrConcentration is 10-50mg/L, NH
3-N concentration is 0.10-2.0mg/L.COD
CrAverage removal rate more than 90%, NH
3The average removal rate of-N is more than 99%.
Embodiment 3, adopt the present invention to handle certain Coking Plant Wastewater, adopt the combination process of one-level anoxic pond+three grades of aerobic filter tank+membrane cisternas, and the floating filler of the enzyme that is adopted is that enzyme is floating
The series ionic enzymatic suspended filler.Water inlet COD
CrConcentration is 2500-5500mg/L, NH
3-N concentration is 300-600mg/L, 30-35 ℃ of anoxic pond temperature, aerobic filter tank temperature 25-30 ℃, total hrt 64h, water outlet COD
CrConcentration is 40-150mg/L, NH
3-N concentration is 0.20-4.0mg/L.COD
CrAverage removal rate more than 90%, NH
3The average removal rate of-N is more than 99%.
As known from the above examples, the present invention all has good removal effect for different types of high ammonia-nitrogen wastewater.
Claims (8)
1. the biological reinforced treatment process of a high ammonia-nitrogen wastewater, it is characterized in that in high ammonia-nitrogen wastewater, having under the condition of dissolved oxygen existence, set up and draw together anoxic pond, aerobic filter tank and membrane cisterna, make good use of the metabolism of oxygen animalcule and impel high organic matter degradation, high molecular, high-octane organism are converted into lower molecular weight, low-energy material: described anoxic pond pond adopts internal recycle and vast scale outer circulation waterpower to stir; Described aerobic filter tank adopts the floating filler of fixed novel enzyme to fill, and immobilized microorganism is adopted micro-pore aeration and jet-flow aeration associating aeration aerating, improves nitrated filter tank fluidised form; Described terminal membrane cisterna adopts the ultra-filtration membrane water outlet.
2. the biological reinforced treatment process of high ammonia-nitrogen wastewater according to claim 1, it is characterized in that: anoxic pond is not provided with agitator, provides waterpower to stir by the internal reflux and the external reflux of vast scale nitrification liquid of anoxic pond, realizes that the muddy water of anoxic pond mixes fully.
3. the biological reinforced treatment process of high ammonia-nitrogen wastewater according to claim 1 is characterized in that: the floating filler of the fixed novel enzyme that adopt in aerobic filter tank is that enzyme is floating
The series ionic enzymatic suspended filler, the duplicature of filler and the special construction of void layer have been realized, improve packing specific area and porosity greatly, thereby whole biochemical reaction district microbial biomass is increased, effective biological concentration is about conventional activated sludge method and biomembrance process 2-5 times, and detergent power is significantly improved.
4. the biological reinforced treatment process of high ammonia-nitrogen wastewater according to claim 1 is characterized in that: aerobic filter tank employing micro-pore aeration and jet-flow aeration associating aeration aerating.
5. the biological reinforced treatment process of high ammonia-nitrogen wastewater according to claim 1 is characterized in that: can take the mode of plural serial stage to move when high organism and high ammonia-nitrogen wastewater are handled in aerobic filter tank.
6. the biological reinforced treatment process of high ammonia-nitrogen wastewater according to claim 1, it is characterized in that: be provided with vast scale nitrification liquid and mud and be back to anoxic pond, enter biochemical system with water inlet after mixing, the ammonia nitrogen concentration in the reduction reaction tank alleviates the restraining effect to microorganism.
7. the biological reinforced treatment process of high ammonia-nitrogen wastewater according to claim 1, it is characterized in that: terminal membrane cisterna adopts membrane bioreactor to substitute second pond, and effluent quality is good, and film has been held back nearly all microorganism simultaneously, sludge concentration is very high in the system, and organic loading is significantly improved.
8. the biological reinforced treatment process of high ammonia-nitrogen wastewater according to claim 1 is characterized in that: membrane cisterna is provided with the discharging excess sludge and enters processed.
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Cited By (15)
| Publication number | Priority date | Publication date | Assignee | Title |
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| CN102249413A (en) * | 2011-07-11 | 2011-11-23 | 中国水电顾问集团中南勘测设计研究院 | Apparatus and method for hydrolysis and acidification with biological enzyme |
| CN103351078A (en) * | 2013-06-24 | 2013-10-16 | 哈尔滨工业大学 | Short-cut denitrification system and method combining coal chemical industry wastewater outside loop moving bed reactor and biological aerated filter |
| CN103588296A (en) * | 2013-11-20 | 2014-02-19 | 乐金电子研发中心(上海)有限公司 | Method for treating sewage by using anaerobic membrane bioreactor to remove sulphur and nitrogen |
| CN104211176A (en) * | 2014-09-17 | 2014-12-17 | 上海世渊环保科技有限公司 | Bioreactor with high-speed turbulence and sewage treating system |
| CN104261614A (en) * | 2014-08-05 | 2015-01-07 | 天津市市政工程设计研究院 | Step-feed multi-stage AO+MBR (Anoxic/Oxic+Membrane Biological Reactor) nitrogen and phosphorus removal system |
| CN104829049A (en) * | 2015-04-21 | 2015-08-12 | 南通大恒环境工程有限公司 | Reusing treatment method for printing and dyeing wastewater |
| CN105087451A (en) * | 2015-10-08 | 2015-11-25 | 南京大学 | Preparation method for denitrified microbial agent |
| CN105174660A (en) * | 2015-10-30 | 2015-12-23 | 太仓东能环保设备有限公司 | Urban domestic sewage treatment technology using A/O method |
| CN106365314A (en) * | 2015-07-23 | 2017-02-01 | 中国石油化工股份有限公司 | Method and system for carrying out biological denitrification on waste water, and applications of system |
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| CN112299653A (en) * | 2020-10-12 | 2021-02-02 | 上海泓济环保科技股份有限公司 | Efficient denitrification treatment method for kitchen wastewater |
| CN112499763A (en) * | 2020-11-11 | 2021-03-16 | 上海泓济环保科技股份有限公司 | Short-cut nitrification coupling anaerobic ammonia oxidation denitrification reactor |
| CN113754191A (en) * | 2021-09-14 | 2021-12-07 | 叶婷婷 | Method and device for treating high-salinity organic wastewater in chemical production |
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| CN102249413A (en) * | 2011-07-11 | 2011-11-23 | 中国水电顾问集团中南勘测设计研究院 | Apparatus and method for hydrolysis and acidification with biological enzyme |
| CN103351078A (en) * | 2013-06-24 | 2013-10-16 | 哈尔滨工业大学 | Short-cut denitrification system and method combining coal chemical industry wastewater outside loop moving bed reactor and biological aerated filter |
| CN103351078B (en) * | 2013-06-24 | 2014-09-24 | 哈尔滨工业大学 | Short-cut denitrification system and method combining coal chemical industry wastewater outside loop moving bed reactor and biological aerated filter |
| CN103588296A (en) * | 2013-11-20 | 2014-02-19 | 乐金电子研发中心(上海)有限公司 | Method for treating sewage by using anaerobic membrane bioreactor to remove sulphur and nitrogen |
| CN103588296B (en) * | 2013-11-20 | 2015-09-16 | 乐金电子研发中心(上海)有限公司 | Application anaerobic membrane bioreactor processes the method for denitrogenating with desulfurization to sewage |
| CN104261614A (en) * | 2014-08-05 | 2015-01-07 | 天津市市政工程设计研究院 | Step-feed multi-stage AO+MBR (Anoxic/Oxic+Membrane Biological Reactor) nitrogen and phosphorus removal system |
| CN104211176A (en) * | 2014-09-17 | 2014-12-17 | 上海世渊环保科技有限公司 | Bioreactor with high-speed turbulence and sewage treating system |
| CN104829049A (en) * | 2015-04-21 | 2015-08-12 | 南通大恒环境工程有限公司 | Reusing treatment method for printing and dyeing wastewater |
| CN106365314A (en) * | 2015-07-23 | 2017-02-01 | 中国石油化工股份有限公司 | Method and system for carrying out biological denitrification on waste water, and applications of system |
| CN106365314B (en) * | 2015-07-23 | 2019-06-28 | 中国石油化工股份有限公司 | A kind of pair of waste water carries out method and system and its application of biological denitrificaion |
| CN105087451A (en) * | 2015-10-08 | 2015-11-25 | 南京大学 | Preparation method for denitrified microbial agent |
| CN105087451B (en) * | 2015-10-08 | 2018-07-10 | 南京大学 | A kind of preparation method of denitrification microorganism microbial inoculum |
| CN105174660A (en) * | 2015-10-30 | 2015-12-23 | 太仓东能环保设备有限公司 | Urban domestic sewage treatment technology using A/O method |
| CN108623107A (en) * | 2018-07-20 | 2018-10-09 | 上海泓济环保科技股份有限公司 | Integrated sewage treating apparatus and its processing method |
| CN110395845A (en) * | 2019-07-17 | 2019-11-01 | 上海世渊环保科技有限公司 | A kind of High-concentration Phenolic Aldehyde production of resins waste water treatment system and processing method |
| CN111320323A (en) * | 2020-02-27 | 2020-06-23 | 山东海景天环保科技股份公司 | Treatment method of high-total-nitrogen leather wastewater |
| CN112299653A (en) * | 2020-10-12 | 2021-02-02 | 上海泓济环保科技股份有限公司 | Efficient denitrification treatment method for kitchen wastewater |
| CN112499763A (en) * | 2020-11-11 | 2021-03-16 | 上海泓济环保科技股份有限公司 | Short-cut nitrification coupling anaerobic ammonia oxidation denitrification reactor |
| CN113754191A (en) * | 2021-09-14 | 2021-12-07 | 叶婷婷 | Method and device for treating high-salinity organic wastewater in chemical production |
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Application publication date: 20110216 |