CN100341797C - Amino benzene analog waste water biological treatment method - Google Patents
Amino benzene analog waste water biological treatment method Download PDFInfo
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- CN100341797C CN100341797C CNB200510094495XA CN200510094495A CN100341797C CN 100341797 C CN100341797 C CN 100341797C CN B200510094495X A CNB200510094495X A CN B200510094495XA CN 200510094495 A CN200510094495 A CN 200510094495A CN 100341797 C CN100341797 C CN 100341797C
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- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02W—CLIMATE CHANGE MITIGATION TECHNOLOGIES RELATED TO WASTEWATER TREATMENT OR WASTE MANAGEMENT
- Y02W10/00—Technologies for wastewater treatment
- Y02W10/10—Biological treatment of water, waste water, or sewage
Abstract
The present invention discloses a method for treating amino benzene production wastewater by using synthetic macroporous high molecular polymer immobilized microorganism strengthening SBR. Aiming at the defects of currently applied microorganism carriers, the present invention provides a synthetic macroporous high molecular polymer used as an immobilized microorganism carrier, and applies the immobilized microorganism carrier to strengthening SBR biological treatment amino benzene production wastewater. When the dosage of throwing and adding of the microorganism carrier is 2% to 10% of the effective volume of a reactor, compared with the conventional SBR technology, the removal rate of amino benzene substances is increased by 35% to 60%, and the concentration of ammonia nitrogen in effluent water is reduced by 5 to 15 mg/L under the condition that technological conditions, such as aeration amount, reaction time, temperature, etc. are same. The present invention can be applied to the reform of existing wastewater treatment devices, or the new construction of wastewater treatment devices, and has favorable economic benefits and environmental benefits.
Description
Technical field
The present invention relates to a kind of method of wastewater treatment, especially a kind of method of utilizing synthetic large pore macromolecular polymkeric substance to handle the phenyl amines factory effluent as microbe carrier enhanced biological treater, especially a kind of by in sequencing batch reactor (SBR), adding synthetic large pore macromolecular polymkeric substance as fixed microorganism carrier, the bioremediation of intensive treatment amino benzene analog waste water.
Background technology
At present, as a kind of organic poison in the water body is carried out cost-effective biologic treating technique, the commercial applications of immobilized microorganism technique is increasing.When biological process is handled organic chemical waste water, can effectively prevent from the loss of high-effective microorganism to improve the effective biomass in the reactor by immobilized microorganism technique.Immobilized microorganism has good ability to bear to rugged environment and anti-shock loading, and immobilized microorganism is easy to separate with waste water, and the surplus sludge volume of its generation lacks than the traditional biological treatment technology.
The bio-carrier that is usually used in bio-reactor mainly contains sand, granulated active carbon, porous inorganic particulate such as diatomite, sintered glass, pottery, but these materials all exist bigger defective.Granulated active carbon and lithotroph carrier year wear rate are higher.Though sand is inexpensive and non-friable, microbial immobilizedly needs considerable time (starting slow), and can't utilize chemisorption as auxiliary removal mechanisms at work.And husky less stable of carrying microorganism active, its activation recovering is slow after the impact that is subjected to chemistry or physical factor.The density of inorganic materials is big in addition, needs wasteful energy when being applied to expanded bed or fluidized-bed, so limited its application in expanded bed and fluidized-bed.
Lodya etc. disclose the method (US 5403487) of utilizing the micro-porous resin material to carry out wastewater treatment as bio-carrier in the aeration packed bed reactor.But the density of the micro-porous resin material that people such as Lodya are used is less than water.Therefore on using, has significant limitation, as must being applied to fluidized-bed reactor with screen cloth fixing resin particle.
Summary of the invention
The purpose of this invention is to provide a class synthetic large pore macromolecular polymkeric substance as fixed microorganism carrier, and be applied to strengthen the method for SBR biological treatment amino benzene analog waste water.
Technical scheme of the present invention is:
A kind of bioremediation of amino benzene analog waste water is characterized in that comprising the following steps:
(1) pH value to 5～10 of adjusting amino benzene analog waste water, the COD concentration＜3500mg/L of waste water, aniline category matter concentration＜1200mg/L;
(2) will be added in the bio-reactor that contains active sludge as the synthetic large pore macromolecular polymkeric substance of carrier, the add-on of synthetic large pore macromolecular polymkeric substance is 2～10% of a described bio-reactor useful volume, feed the waste water of step (1) gained then, bubbling air also carries out aeration, microbial immobilized through 20～30 days forms stable microbial film on synthetic large pore macromolecular polymer support; Described synthetic large pore macromolecular polymkeric substance is that basic framework is macroporous ion exchange resin, macroporous cross-linked polystyrene Archon or the macroporous adsorbent resin of crosslinked polystyrene, and described bio-reactor is the SBR sequencing batch reactor; Macroporous ion exchange resin wherein can adopt the D301 type, macroporous adsorbent resin can adopt the X-5 type, active sludge in the SBR sequence bioreactor is the aerobic activated sludge through domestication, its activated sludge concentration in reactor is 1000～2000mg MLSS/L (MLSS is a mixed liquor suspended solid, MLSS), the useful volume of used SBR sequence bioreactor can be 1.3L, every batch of water inlet volume is 0.8L, temperature of reaction can be 25～35 ℃, water intake mode is instantaneous water inlet, aeration rate is 0.6～0.9L/mim, aeration time 8h, sedimentation time 2h;
(3) waste water of step (1) is sent in the described bio-reactor, aeration aerobic reaction 1.5～8h under 10～40 ℃ temperature, make that the suspension microorganism in the organism and reactor and the microorganism on being fixed on carrier fully contact the realization aerobic biodegradation in the waste water;
(4) will discharge behind the wastewater sedimentation 0.5-2h behind step (3) aerobic biodegradation;
(5) wastewater treatment is carried out in repeating step (3), (4).
Aeration in the described step (3) is to be 0.6～1.2L/min.
Beneficial effect of the present invention:
Large pore macromolecular polymkeric substance of the present invention has the following advantages: (1) physical strength height, wear rate is little, can remove excessive microorganism by friction and hydraulic shear effect in the fluid mapper process, (2) not with waste water in chemical reaction, chemical stability is strong, (3) density is slightly larger than water, but only need just fluidisation of aeration, need not additionally to increase power set, (4) has certain adsorption, and can regenerate by microbiological deterioration, (5) the large pore macromolecular polymkeric substance can change the particle diameter and the pore size of resin as required flexibly in building-up process, (6) the large pore macromolecular polymkeric substance also can utilize large pore macromolecular polymkeric substance discarded or that reclaim, is a kind of method that reduces refuse and turn waste into wealth.
Large pore macromolecular polymkeric substance immobilized microorganism provided by the invention is strengthened SBR and handles phenyl amines factory effluent method, can effectively improve the processing efficiency of SBR.Specifically,, improve the microorganism concn in the reactor, effectively retain the high-efficiency strain of higher concentration, can effectively improve the processing efficiency of SBR aniline category matter and ammonia nitrogen by in SBR, adding fixed microorganism carrier.
When the microbe carrier dosage is 2～10% of a reactor useful volume, at aeration rate, under the reaction times treatment condition identical, compare with traditional SBR technology with temperature etc., the clearance of aniline category matter improves 35～60%, and ammonia nitrogen concentration reduces by 5～15mg/L in the water outlet.As seen make microbe carrier by in reactor, adding the large pore macromolecular polymkeric substance, can improve the processing efficiency of reactor, shorten the reaction times, or reactor can be handled more waste water under the situation of same treatment efficient.
Therefore, apply the present invention to the transformation of existing wastewater treatment equipment, or newly-built wastewater treatment equipment, good economic benefit and environmental benefit all had.
Embodiment
The present invention is further illustrated below in conjunction with embodiment.
Embodiment 1:
In being the sbr reactor device of 1.3L, useful volume adds the macroporous cross-linked polystyrene Archon as fixed microorganism carrier, carrier bulk is 4% of a reactor useful volume, microbial immobilized through 20～30 days forms stable microbial film on synthetic large pore macromolecular polymer support.Test waste water is regulated its pH value to 5～10, and is added nitrogen, Phosphorus nutritive element for simulation para-totuidine waste water, and making waste water COD is 1100mg/L, and para-totuidine concentration is 327mg/L.Every batch adds reactor with 0.8L waste water, and water intake mode is instantaneous water inlet.At 25 ℃, when aeration rate is 0.6L/min, aeration 360min postprecipitation 30min, draining.COD is 10.5mg/L in the water outlet, and para-totuidine concentration is less than 0.5mg/L, and ammonia nitrogen concentration is 20mg/L.
Embodiment 2:
In embodiment 1 described sbr reactor device, add occupy imitate volume 6% the macroporous cross-linked polystyrene Archon as fixed microorganism carrier.Microbial immobilized through 20～30 days forms stable microbial film on synthetic large pore macromolecular polymer support.Test waste water is regulated its pH value to 5～10, and is added nitrogen, Phosphorus nutritive element for simulation p-aminophenol factory effluent, and making waste water COD is 2300mg/L, and p-aminophenol concentration is 648mg/L.Flooding quantity and water intake mode are with embodiment 1.At 15 ℃, when aeration rate is 0.9L/min, aeration 420min postprecipitation 120min, draining.COD is 16.4mg/L in the water outlet, and p-aminophenol concentration is less than 0.5mg/L, and ammonia nitrogen concentration is 23.9mg/L.
Embodiment 3:
In embodiment 1 described sbr reactor device, add occupy imitate volume 10% macroporous anion exchange resin D301 as fixed microorganism carrier.Microbial immobilized through 20～30 days forms stable microbial film on synthetic large pore macromolecular polymer support.Test waste water, flooding quantity and water intake mode are with embodiment 1.At 10 ℃, when aeration rate is 0.9L/min, aeration 480min postprecipitation 90min, draining.COD is 17.1mg/L in the water outlet, and para-totuidine concentration is less than 0.5mg/L, and ammonia nitrogen concentration is 24.1mg/L.
Embodiment 4:
In embodiment 1 described sbr reactor device, add occupy imitate volume 8% macroporous anion exchange resin D311 as fixed microorganism carrier.Microbial immobilized through 20～30 days forms stable microbial film on synthetic large pore macromolecular polymer support.Test waste water is the meta-aminotoluene factory effluent, regulates its pH value to 5～10, and adds nitrogen, Phosphorus nutritive element, and making waste water COD is 1150mg/L, and meta-aminotoluene concentration is 324mg/L.Flooding quantity and water intake mode are with embodiment 1.At 35 ℃, when aeration rate is 0.9L/min, aeration 210min postprecipitation 60min, draining.COD is 13.4mg/L in the water outlet, and meta-aminotoluene concentration is less than 0.5mg/L, and ammonia nitrogen concentration is 12.9mg/L.
Embodiment 5:
In embodiment 1 described sbr reactor device, add occupy imitate volume 2% macroporous adsorbent resin X-5 as fixed microorganism carrier.Microbial immobilized through 20～30 days forms stable microbial film on synthetic large pore macromolecular polymer support.Test waste water, flooding quantity and water intake mode are with embodiment 1.At 25 ℃, when aeration rate is 0.9L/min, aeration 120min postprecipitation 60min, draining.COD is 11.2mg/L in the water outlet, and para-totuidine concentration is less than 0.5mg/L, and ammonia nitrogen concentration is 8.0mg/L.
Embodiment 6:
In embodiment 1 described sbr reactor device, add occupy imitate volume 4% macroporous adsorbent resin X-5 as fixed microorganism carrier.Microbial immobilized through 20～30 days forms stable microbial film on synthetic large pore macromolecular polymer support.Test waste water is regulated its pH value to 5～10, and is added nitrogen, Phosphorus nutritive element for simulation Aniline Production waste water, and making its COD is 1472mg/L, and aniline concentration is 380mg/L.Flooding quantity and water intake mode are with embodiment 1.At 37 ℃, when aeration rate is 0.9L/min, aeration 210min postprecipitation 120min, draining.COD is 27.5mg/L in the water outlet, and aniline concentration is less than 0.5mg/L, and ammonia nitrogen concentration is 5.3mg/L.
Embodiment 7:
In embodiment 1 described sbr reactor device, add occupy imitate volume 5% macroporous adsorbent resin X-5 as fixed microorganism carrier.Microbial immobilized through 20～30 days forms stable microbial film on synthetic large pore macromolecular polymer support.Test waste water is regulated its pH value to 5～10, and is added nitrogen, Phosphorus nutritive element for simulation Ortho Toluidine factory effluent, and making the test waste water COD is 1154mg/L, and Ortho Toluidine concentration is 326.2mg/L.Flooding quantity and water intake mode are with embodiment 1.At 25 ℃, when aeration rate is 0.9L/min, aeration 140min postprecipitation 120min, draining.COD is 14.6mg/L in the water outlet, and Ortho Toluidine concentration is less than 0.5mg/L, and ammonia nitrogen concentration is 8.7mg/L.
Embodiment 8:
In embodiment 1 described sbr reactor device, add occupy imitate volume 8% macroporous ion exchange resin D301 as fixed microorganism carrier.Microbial immobilized through 20～30 days forms stable microbial film on synthetic large pore macromolecular polymer support.Test waste water is the Ortho Toluidine factory effluent, regulates its pH value to 5～10, and adds nitrogen, Phosphorus nutritive element, and making waste water COD is 1508mg/L, and Ortho Toluidine concentration is 502mg/L.Every batch of flooding quantity is 1.0L, and water intake mode is with embodiment 1.At 25 ℃, when aeration rate is 0.9L/min, aeration 480min postprecipitation 60min, draining.COD is 56mg/L in the water outlet, and Ortho Toluidine concentration is less than 1.0mg/L, and ammonia nitrogen concentration is 46.1mg/L.
Embodiment 9:
In embodiment 1 described sbr reactor device, add occupy imitate volume 6% the macroporous cross-linked polystyrene Archon as fixed microorganism carrier.Microbial immobilized through 20～30 days forms stable microbial film on synthetic large pore macromolecular polymer support.Test waste water, flooding quantity and water intake mode are with embodiment 8.At 25 ℃, when aeration rate is 0.9L/min, aeration 480min postprecipitation 90min, draining.COD is 65mg/L in the water outlet, and Ortho Toluidine concentration is less than 1.0mg/L, and ammonia nitrogen concentration is 33.6mg/L.
Embodiment 10:
In embodiment 1 described sbr reactor device, add occupy imitate volume 4% macroporous adsorbent resin X-5 as fixed microorganism carrier.Microbial immobilized through 20～30 days forms stable microbial film on synthetic large pore macromolecular polymer support.Test waste water, flooding quantity and water intake mode are with embodiment 8.At 25 ℃, when aeration rate is 0.9L/min, aeration 480min postprecipitation 120min, draining.Water outlet COD is 40mg/L, and Ortho Toluidine concentration is less than 0.5mg/L, and ammonia nitrogen concentration is 13.6mg/L.
Embodiment 11:
In embodiment 1 described sbr reactor device, add occupy imitate volume 4% macroporous adsorbent resin X-5 as fixed microorganism carrier.Microbial immobilized through 20～30 days forms stable microbial film on synthetic large pore macromolecular polymer support.Test waste water is the Ortho Toluidine factory effluent, regulates its pH value to 5～10, and adds nitrogen, Phosphorus nutritive element, and making waste water COD is 3450mg/L, and Ortho Toluidine concentration is 1158mg/L.Test waste water, flooding quantity and water intake mode are with embodiment 8.At 25 ℃, when aeration rate is 0.9L/min, aeration 480min postprecipitation 120min, draining.COD is 85mg/L in the water outlet, and Ortho Toluidine concentration is less than 0.5mg/L, and ammonia nitrogen concentration is 64mg/L.
Claims (2)
1, a kind of bioremediation of amino benzene analog waste water is characterized in that comprising the following steps:
(1) pH value to 5～10 of adjusting amino benzene analog waste water, the COD concentration＜3500mg/L of waste water, aniline category matter concentration＜1200mg/L;
(2) will be added in the bio-reactor that contains active sludge as the synthetic large pore macromolecular polymkeric substance of carrier, the add-on of synthetic large pore macromolecular polymkeric substance is 2～10% of a described bio-reactor useful volume, feed the waste water of step (1) gained then, bubbling air also carries out aeration, microbial immobilized through 20～30 days forms stable microbial film on synthetic large pore macromolecular polymer support; Described synthetic large pore macromolecular polymkeric substance is that basic framework is macroporous ion exchange resin, macroporous cross-linked polystyrene Archon or the macroporous adsorbent resin of crosslinked polystyrene, and described bio-reactor is the SBR sequencing batch reactor;
(3) waste water of step (1) is sent in the described bio-reactor, aeration aerobic reaction 1.5～8h under 10～40 ℃ temperature, make that the suspension microorganism in the organism and reactor and the microorganism on being fixed on carrier fully contact the realization aerobic biodegradation in the waste water;
(4) will discharge behind the wastewater sedimentation 0.5-2h behind step (3) aerobic biodegradation;
(5) wastewater treatment is carried out in repeating step (3), (4).
2, the bioremediation of amino benzene analog waste water according to claim 1 is characterized in that the aeration in the described step (3) is to be 0.6～1.2L/min.
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| CN102491455A (en) * | 2011-12-07 | 2012-06-13 | 南京大学 | Electrochemical method for removing nitroaniline in water body |
| JP6635541B2 (en) * | 2015-04-09 | 2020-01-29 | 積水アクアシステム株式会社 | Microorganism holding carrier, sewage treatment method, and sewage treatment system |
| CN112723556A (en) * | 2020-12-02 | 2021-04-30 | 湖北汇农生物科技有限公司 | Method for building microorganism sewage treatment device |
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| CN1644529A (en) * | 2004-12-22 | 2005-07-27 | 中国石化集团南京化学工业有限公司 | Fully biological treatment of wastewater of nitrobenzol or aniline or their mixture |
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Patent Citations (6)
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| SU1097566A1 (en) * | 1982-12-17 | 1984-06-15 | Предприятие П/Я А-7850 | Method for biochemical purification of concentrated waste liquors from aniline |
| US5656169A (en) * | 1996-08-06 | 1997-08-12 | Uniroyal Chemical Ltd./Ltee | Biodegradation process for de-toxifying liquid streams |
| WO2004002904A1 (en) * | 2002-06-28 | 2004-01-08 | Kingsford Environmental (H.K.) Ltd. | Combined activated sludge-biofilm sequencing batch reactor and process |
| CN2626990Y (en) * | 2003-05-29 | 2004-07-21 | 张建中 | Sewage treatment reactor |
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