CN100513330C - Composite bioreactor for treating high-concentration hardly-degradable waste water - Google Patents
Composite bioreactor for treating high-concentration hardly-degradable waste water Download PDFInfo
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- CN100513330C CN100513330C CNB2005101262318A CN200510126231A CN100513330C CN 100513330 C CN100513330 C CN 100513330C CN B2005101262318 A CNB2005101262318 A CN B2005101262318A CN 200510126231 A CN200510126231 A CN 200510126231A CN 100513330 C CN100513330 C CN 100513330C
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Abstract
This invention relates to a compound biological reactor for processing waste water with high concentration and difficult to be degraded composed of a fixed biological reaction region, an integrate degradation region and a deposition region, in which, there are engineering bacterium in the biological reaction region, a water inlet, air inlet and a mud discharge port are set at the bottom and an exhaust hole is at the top, the air inlet is connected with an air inlet pipe and an aeration head, multiple guide holes are parallel on the upper part of the outside wall of the region connected with the integrate degradation region with mixed bacterium in it filled with fillings, aeration strips are set at the bottom, multiple liquid guide grooves are set at the middle of the outside wall, ring bubble blocking plates are set below the grooves and multiple mud refluent grooves are set at the bottom connected with the deposition region together with the liquid guide grooves, an outfall is set at the upper part of the deposition region and a mud exhaust is set at the bottom.
Description
Technical field
The invention belongs to the equipment that utilizes bioreactor for treatment waste water, particularly a kind of composite bioreactor of handling high-concentration hardly-degradable waste water.
Background technology
Can produce a large amount of high densitys, organic wastewater with difficult degradation thereby in the Industrial processes, these organic waste waters are as directly being discharged in the environment without effectively just handling, and can cause HUMAN HEALTH and ecotope to have a strong impact on.At present, how economical, to handle high concentration hard-degraded organic waste water efficiently be focus and the difficult point that water treatment field is paid close attention to.The investigator is from improving treatment process, adding the treatment effect that high concentration hard-degraded organic waste water was improved and strengthened to many aspects such as high-effective microorganism and enforcement cleaner production, the purpose that reach the protection environment, promotes the well-being of mankind both at home and abroad.
The method of handling high concentration hard-degraded organic waste water mainly contains physics method, chemical method and biological process, and these three kinds of methods respectively have relative merits.Biological process is compared with preceding two kinds of methods, and it is few to have investment cost, and working cost is low, and is simple to operate, do not produce the advantage of secondary pollution, is one of most popular method in the present water treatment.Conventional bioremediation comprises activated sludge process and biomembrance process, and it is to utilize microorganism with contaminant degradation in the waste water or be converted into the process of harmless or low harmful class material that biological process is handled high concentration hard-degraded organic waste water.
Conventional biological process moves under lower sludge loading and volume load usually, and the degradation rate of pollutent and load are all lower.For high concentration hard-degraded organic waste water, biological process usually needs this waste water is mixed with a large amount of sanitary sewage, with the waste water Macrodilution, toxic substance and COD value is reduced in a certain scope, just can make the water after the processing reach emission request, the extension rate of waste water needs up to tens of times sometimes.
The method that improves the biological treatment load mainly contains two kinds, and a kind of is by screening and domestication Black Liquor with Efficient Bacteria pollutent to be degraded preferably, and another kind is to utilize gene engineering to transform specified microorganisms, improves the degradation rate of microorganism.First method is normally limited for the help that improves sludge loading, and gene engineering can improve sludge loading greatly.
In recent years, development along with gene engineering, some domestic and international research persons have constructed super engineering bacteria in the laboratory, by in recipient cell, changing the plasmid that carries specific gene over to, can obtain efficiently expressing the super engineering bacteria of certain enzyme, thereby reach the purpose of enhancing degradation noxious pollutant.Yet engineering bacteria has stronger selectivity and specificity to substrate, and for dissimilar pollutents, the degradation rate of engineering bacteria shows evident difference.When the actual waste water complicated component, only rely on the Degradation of engineering bacteria to be difficult to the degraded effectively simultaneously of all pollutents.In addition, the loss of engineering bacteria also can bring the biological safety problem of environment.
Consider engineering bacteria and mixed bacterium limitation separately, both are combined, can improve the treatment effect of high concentration hard-degraded organic waste water.
Summary of the invention
The objective of the invention is to overcome the defective of biologic treating technique on organic wastewater with difficult degradation thereby is handled, a kind of composite bioreactor of handling high-concentration hardly-degradable waste water is provided, this reactor is used for processing contains high concentration hard-degraded organic waste water, can effectively multiple organic pollutant thoroughly be degraded, improve the load of pollutent, reduced the reactor floor space.
Another object of the present invention provides a kind of working method of handling the composite bioreactor of high-concentration hardly-degradable waste water.
A kind of composite bioreactor of handling high-concentration hardly-degradable waste water of the present invention, this integration apparatus profile is a cylinder wimble structure, comprise immobilization biological reaction zone, comprehensive degraded district and settling region three parts composition, be respectively immobilization biological reaction zone, comprehensive degraded district and settling region from inside to outside, flow out from the settling region at last in waste water this three zones of flowing through successively.
A kind of composite bioreactor of handling high-concentration hardly-degradable waste water, wherein: this equipment is that recipient cell is that the immobilization biological reaction zone of e. coli strains BL21, the comprehensive degraded district that has isolating effective complex bacterium near the soil insecticide factory and settling region constitute by having engineering bacteria;
Immobilization biological reaction zone bottom has a water-in, an inlet mouth and a mud discharging mouth, and the inlet mouth end has aeration head; The top is provided with venting hole; Outer side wall top has a plurality of pod apertures, and the immobilization biological reaction zone is communicated with comprehensive degraded district by pod apertures;
Bottom, comprehensive degraded district is provided with the aeration bar, and inside is filled with filler, and the middle part of its outer side wall has a circle diversion trench, and the bottom has the mud backflash, and diversion trench and mud backflash are communicated with the settling region;
A plurality of water port are arranged at top, settling region, and mud discharging mouth is arranged at the bottom.
Wherein, the immobilization biological reaction zone is a column structure, and a water-in, inlet mouth and mud discharging mouth are arranged at the bottom, and water-in is communicated with water pump, and the mud relief outlet is controlled by ball valve, and the inlet mouth top is provided with aeration head; Venting hole is arranged at the top; This reaction zone side wall upper part has a plurality of pod apertures, and the immobilization biological reaction zone is communicated with comprehensive degraded district by pod apertures;
Comprehensive degraded district is ring texture in the outside of immobilization biological reaction zone, and filler has been placed in inside, mixed bacterium both can apposition growth on filler, but also suspension growth; The bottom is covered with a circle micropore aeration pipe, and aeration tube links to each other with air pump by flexible pipe; There is a circle diversion trench at the middle part of efficient degradation district outer side wall, and waste water flows into the settling region through diversion trench; Influence solid-liquid separation effect for the bubble that prevents the aeration generation enters the settling region, below diversion trench, be provided with a circle bubble baffler; The outer side wall bottom is the mud backflash, is connected with the settling region;
The settling region is located at the outside in Black Liquor with Efficient Bacteria degraded district, and the water outlet after the processing is flowed out through post precipitation overflow groove from its upper end; Its bottom is provided with mud discharging mouth, can discharge excess sludge.
Described composite bioreactor, its described engineering bacteria is that recipient cell is e. coli strains BL21 (DE3), and plasmid vector is pETDuet, carry two kinds of organophosphor hydrolytic enzyme gene OPH and B1, obtain efficiently expressing the genetic engineering bacterium of these two kinds of detoxifying genes through conversion; Mixed bacterium is to separate the mixed bacterial that obtains near the soil insecticide factory.
Described composite bioreactor, its described immobilization material is the polyvinyl alcohol gel particle.
A kind of method of wastewater treatment of handling the composite bioreactor of high-concentration hardly-degradable waste water, wherein: waste water enters in the bio-reactor from immobilization biological reaction zone bottom, upwards flow, via the immobilization biological reaction zone that has engineering bacteria e. coli strains BL21, the major objective pollutent in the waste water is fixed on the engineering bacteria degraded on the carrier; Other pollutent that is not degraded and metabolic intermediate are in pod apertures enters comprehensive degraded district, be attached to be grown on the filler and degrade with the isolating mixed bacterium from insecticide factory's surrounding soil of suspension growth, water after the purification is discharged from the water port of settling region, and excess sludge is discharged from the mud discharging mouth of settling region.
A kind of method of wastewater treatment of handling the composite bioreactor of high-concentration hardly-degradable waste water is: waste water enters from immobilization biological reaction zone bottom, upwards flows, and the major objective pollutent is immobilized the engineering bacteria degraded; The intermediate product that pollutent of tentatively being degraded and degraded produce enters comprehensive degraded district through pod apertures, and mixed bacterium is thoroughly degraded; At last, the waste water of handling through engineering bacteria and mixed bacterium enters the settling region from diversion trench, discharges from water outlet after solid-liquid separation; Mud after gravity concentrates is back to comprehensive degraded district, part excess sludge discharge.
Described method, the required dissolved oxygen of microorganism growth and metabolism is provided by pneumatic pump, enters immobilization biological reaction zone, comprehensive degraded district respectively, and waste water is sent into reactor via water pump, and is thoroughly degraded in three zones of flowing through successively.
Described method after the immobilization engineering bacteria loss of activity in the immobilization biological reaction zone, is discharged its mud discharging mouth from the immobilization biological reaction zone, adds new immobilization engineering bacteria then again, and reactor still can continue steady running.
Characteristics of the present invention are that the main body of biological treatment device is made of immobilization biological reaction zone and comprehensive degraded district, and their synergies are finished the degraded of pollutent jointly.Waste water at first enters the immobilization biological reaction zone, and the immobilization material of embedding super engineering bacteria is loaded in this district, and the structure of super engineering bacteria is at the major objective pollutent in the waste water, and other pollutent then continues degraded by comprehensive degraded district mixed bacterium.Engineering bacteria and mixed bacterium are separately cultivated and use, can effectively be brought into play advantage and the effect of two class bacterium.The degradation speed of engineering bacteria will be higher than mixed bacterium far away, can effectively reduce the concentration of major objective pollutent, reduces the murder by poisoning of high density pollution thing to mixed bacterium; The pollutent that is not degraded and the intermediate product of generation further decompose the mixed bacterium in comprehensive degraded district, obtain harmless end product.Engineering bacteria and mixed bacterium are separated, can also avoid mixed bacterium to show growth, influence the activity of fixed engineering bacteria in the carrier at the engineering bacteria carrier.For example, when handling agricultural chemicals waste water, conventional biological process need could satisfy the agricultural chemicals waste water Macrodilution needs of handling, and the present invention utilizes the synergy of immobilization engineering bacteria and mixed bacterium can significantly reduce the extension rate of waste water, even can not need to dilute the requirement that just can reach processing, therefore, reactor floor space of the present invention is less, and investment and working cost are lower.Equipment of the present invention has following advantage:
1. with the advantage combination of engineering bacteria and mixed bacterium, be developed into a kind of composite bioreactor of handling high-concentration hardly-degradable waste water.This structure of reactor compactness, structure is succinct, floor space is little, operation with safeguard simple.
2. engineering bacteria and mixed bacterium are separated, both can effectively bring into play advantage and the effect of two class bacterium, can avoid mixed bacterium to show growth again, influence the activity of fixed engineering bacteria in the carrier at carrier.Engineering bacteria is fixed on the carrier, can prevents the loss of engineering bacteria.
3. can significantly reduce the extension rate of waste water, reduce reactor volume, reduce the expense of follow-up advanced treatment, reduce investment and working cost.
Description of drawings
Fig. 1 is the composite bioreactor structural representation that the present invention handles high-concentration hardly-degradable waste water.
Embodiment
Embodiment 1: agricultural chemicals waste water is handled
See also Fig. 1.
The present invention handles the composite bioreactor of high-concentration hardly-degradable waste water, it is immobilized bacterium-Black Liquor with Efficient Bacteria combined action integrated reactor that synthetic glass is made, its basic structure is the cylinder taper, constitute by donut and circular cone, it is of a size of upper base diameter 520mm, the diameter 320mm that goes to the bottom, total height 490mm comprises that immobilization biological reaction zone 1, comprehensive degraded district 2 and settling region 3 constitute.
The genetic engineering bacterium that uses in the test is provided with research National Key Laboratory by the agriculture worm plague of rats comprehensive regulation of animal institute of the Chinese Academy of Sciences, recipient cell is e. coli strains BL21 (DE3), plasmid vector is pETDuet, carry two kinds of organophosphor hydrolytic enzyme gene 0PH and B1, obtain efficiently expressing the genetic engineering bacterium of these two kinds of detoxifying genes through conversion.Mixed bacterium is to separate the mixed bacterial that obtains near insecticide factory the soil, is preserved by this laboratory.
Be filled with immobilization material in immobilization biological reaction zone 1 inside: polyvinyl alcohol gel particle 19, the engineering bacteria that carries two kinds of organophosphor hydrolytic enzyme genes is fixed in the polyvinyl alcohol gel particle 19.Immobilization biological reaction zone 1 bottom is provided with a water-in 5, an inlet mouth 9 and a mud discharging mouth 4, and water-in 5 outer ends communicate with sump pump 6, and end is connected to aeration head 7 in the inlet mouth 9, and the outer end communicates with pneumatic pump 11.The top is provided with a venting hole 10.Immobilization biological reaction zone 1 side wall upper part has a plurality of pod apertures 12, and each pod apertures 12 outside has added one deck screen cloth, and mesh size is 1～2mm.Immobilization biological reaction zone 1 is communicated with comprehensive degraded district 2 by a plurality of pod apertures 12.
2 bottoms, comprehensive degraded district are equipped with aeration bar 14, inside is filled with filler 13, the medium position of its sidewall has some liquid guide flow grooves 15, liquid guide flow groove 15 bottoms are provided with a circle bubble baffler 16, some mud backflashes 18 are arranged at sidewall bottom, and Black Liquor with Efficient Bacteria degraded district 2 communicates with settling region 3 by liquid guide flow groove 15 and mud backflash 18.
The top of settling region 3 sidewalls has a plurality of water outlets 8, and mud discharging mouth 17 is arranged at the bottom, and excess sludge is discharged from mud discharging mouth 17.
Waste water enters in the bio-reactor from immobilization biological reaction zone 1 bottom, and the organophosphorus pesticide pollution thing in the waste water is by immobilization engineering bacteria degraded in the polyvinyl alcohol gel particle 19; Other organic pollutant that is not degraded and intermediate product are in pod apertures 12 enters into comprehensive degraded district 2, be attracted on the filler 13 and further degrade with the mixed bacterium of suspension growth, water after the purification enters settling region 3 from the liquid guide flow groove 15 in comprehensive degraded district 2, and finally discharges from water outlet 8.The precipitating sludge of settling region 3 can be back to comprehensive degraded district 2, and excess sludge is discharged from mud discharging mouth 17.
The required dissolved oxygen of microorganism growth and metabolism is provided by pneumatic pump 11, enters immobilization biological reaction zone 1, comprehensive degraded district 2 respectively, and waste water is sent into reactor via water pump 6, and is thoroughly degraded in three zones of flowing through successively.
In the immobilization biological reaction zone 1, after being embedded in the immobilization engineering bacteria loss of activity in the polyvinyl alcohol gel particle 19, gel particle 19 is discharged from the mud discharging mouth 4 of immobilization biological reaction zone 1, add the new polyvinyl alcohol gel particle that is embedded with engineering bacteria then, reactor can continue normal operation.
Contain the organophosphorus blended simulated wastewater of DDVP, thiophos, Malathion and parathion-methyl, enter bio-reactor from water-in 5, the agricultural chemicals total concn is that 40ppm, single pesticide concentration are 10ppm, and methanol concentration is 3200mg/L.Flooding velocity is 10l/d, and hydraulic detention time is 4d, and the temperature of biological respinse is 30 ℃.The COD value of water-in 5 is 3273mg/L, and the COD value of water outlet 8 is 276mg/L, and clearance is 91.6%, and the clearance of DDVP, thiophos, Malathion and parathion-methyl is respectively 97.5%, 100%, 100% and 71.2%.
Claims (8)
1. composite bioreactor of handling high-concentration hardly-degradable waste water, it is characterized in that: this equipment is e. coli strains BL21 by having recipient cell, plasmid vector is pETDuet, carry the engineering bacteria of two kinds of organophosphor hydrolytic enzyme gene OPH and B1 the immobilization biological reaction zone, have near insecticide factory that the comprehensive degraded district of isolating mixed bacterium and settling region constitute the soil;
Immobilization biological reaction zone bottom has a water-in, an inlet mouth and a mud discharging mouth, and the inlet mouth end has aeration head; The top is provided with venting hole; Outer side wall top has a plurality of pod apertures, and the immobilization biological reaction zone is communicated with comprehensive degraded district by pod apertures;
Bottom, comprehensive degraded district is provided with the aeration bar, and inside is filled with filler, and the middle part of its outer side wall has a circle diversion trench, and the bottom has the mud backflash, and diversion trench and mud backflash are communicated with the settling region;
A plurality of water port are arranged at top, settling region, and mud discharging mouth is arranged at the bottom.
2. composite bioreactor as claimed in claim 1, it is characterized in that: reactor monolith is made of a plurality of concentric drums, described immobilization biological reaction zone is in the inside of reactor, and comprehensive degraded district is positioned at the concentric drums second layer from inside to outside, and the settling region is located at the outermost layer of concentric drums.
3. composite bioreactor as claimed in claim 1 or 2 is characterized in that: described immobilization biological reaction zone, and its inside is filled with the immobilization material as bio-carrier, and engineering bacteria is embedded in the material.
4. composite bioreactor as claimed in claim 1 or 2 is characterized in that: described comprehensive degraded district, and the middle part of its outer side wall is provided with a plurality of liquid guide flow grooves, and a circle bubble baffler is arranged below the diversion trench, and the bottom of outer side wall is provided with a plurality of mud backflashes.
5. composite bioreactor as claimed in claim 1 is characterized in that: a plurality of pod apertures in described immobilization biological degraded district, and each pod apertures outside has added one deck screen cloth, and mesh size is 1～2mm.
6. composite bioreactor as claimed in claim 1 is characterized in that: described immobilization material is the polyvinyl alcohol gel particle.
7. method of wastewater treatment of handling the composite bioreactor of high-concentration hardly-degradable waste water, it is characterized in that: waste water enters in the bio-reactor from immobilization biological reaction zone bottom, upwards flow, via having recipient cell is e. coli strains BL21, plasmid vector is pETDuet, carry the immobilization biological reaction zone of two kinds of organophosphor hydrolytic enzyme gene OPH and B1, the major objective pollutent in the waste water is fixed on the engineering bacteria degraded on the carrier; Other pollutent that is not degraded and metabolic intermediate are in pod apertures enters comprehensive degraded district, be attached be grown on the filler and near the soil insecticide factory of suspension growth isolating mixed bacterium degraded, water after the purification is discharged from the water port of settling region, and excess sludge is discharged from the mud discharging mouth of settling region.
8. method as claimed in claim 7, it is characterized in that: after the immobilization engineering bacteria loss of activity in the immobilization biological reaction zone, its mud discharging mouth from the immobilization biological reaction zone is discharged, add new immobilization engineering bacteria then again, reactor still can continue steady running.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CNB2005101262318A CN100513330C (en) | 2005-11-30 | 2005-11-30 | Composite bioreactor for treating high-concentration hardly-degradable waste water |
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| Application Number | Priority Date | Filing Date | Title |
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| CNB2005101262318A CN100513330C (en) | 2005-11-30 | 2005-11-30 | Composite bioreactor for treating high-concentration hardly-degradable waste water |
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| CN1978343A CN1978343A (en) | 2007-06-13 |
| CN100513330C true CN100513330C (en) | 2009-07-15 |
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| Publication number | Priority date | Publication date | Assignee | Title |
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| CN102295381A (en) * | 2010-06-22 | 2011-12-28 | 天津滨海鼎昇环保科技工程有限公司 | Double-layer biological cooperative sewage treatment device |
| CN102948393B (en) * | 2012-11-17 | 2014-07-02 | 中国水产科学研究院渔业机械仪器研究所 | Aquaculture pond water circulating treatment system under heat-preserving greenhouse condition and construction method thereof |
Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US4826601A (en) * | 1986-08-01 | 1989-05-02 | Waste Treatment Technologies, Inc. | Sewage treatment method |
| CN1211618A (en) * | 1997-02-18 | 1999-03-24 | 中国科学院动物研究所 | Detoxicating engineering bacteria and its application |
| US6428691B1 (en) * | 2000-11-06 | 2002-08-06 | Charles Wofford | Biological waste water treatment system |
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2005
- 2005-11-30 CN CNB2005101262318A patent/CN100513330C/en not_active Expired - Fee Related
Patent Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US4826601A (en) * | 1986-08-01 | 1989-05-02 | Waste Treatment Technologies, Inc. | Sewage treatment method |
| CN1211618A (en) * | 1997-02-18 | 1999-03-24 | 中国科学院动物研究所 | Detoxicating engineering bacteria and its application |
| US6428691B1 (en) * | 2000-11-06 | 2002-08-06 | Charles Wofford | Biological waste water treatment system |
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| CN1978343A (en) | 2007-06-13 |
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Granted publication date: 20090715 Termination date: 20111130 |