CN101565231B - Biological treatment method for polynitro arene or azo dye wastewater - Google Patents
Biological treatment method for polynitro arene or azo dye wastewater Download PDFInfo
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- CN101565231B CN101565231B CN2009100117777A CN200910011777A CN101565231B CN 101565231 B CN101565231 B CN 101565231B CN 2009100117777 A CN2009100117777 A CN 2009100117777A CN 200910011777 A CN200910011777 A CN 200910011777A CN 101565231 B CN101565231 B CN 101565231B
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- aeration
- biological
- water inlet
- azo dye
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- 239000002351 wastewater Substances 0.000 title claims abstract description 22
- 239000000987 azo dye Substances 0.000 title claims abstract description 15
- 238000000034 method Methods 0.000 title abstract description 24
- 150000004945 aromatic hydrocarbons Chemical class 0.000 title abstract 3
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 claims abstract description 46
- 238000005273 aeration Methods 0.000 claims abstract description 31
- 239000000975 dye Substances 0.000 claims abstract description 19
- 239000012528 membrane Substances 0.000 claims abstract description 18
- QVGXLLKOCUKJST-UHFFFAOYSA-N atomic oxygen Chemical compound [O] QVGXLLKOCUKJST-UHFFFAOYSA-N 0.000 claims abstract description 17
- 239000001301 oxygen Substances 0.000 claims abstract description 17
- 229910052760 oxygen Inorganic materials 0.000 claims abstract description 17
- 239000010802 sludge Substances 0.000 claims description 16
- 230000000813 microbial effect Effects 0.000 claims description 10
- 150000004982 aromatic amines Chemical class 0.000 claims description 9
- 230000015556 catabolic process Effects 0.000 claims description 8
- 238000006731 degradation reaction Methods 0.000 claims description 8
- 238000011081 inoculation Methods 0.000 claims description 6
- 244000005700 microbiome Species 0.000 claims description 5
- 230000008901 benefit Effects 0.000 abstract description 3
- 230000007613 environmental effect Effects 0.000 abstract description 3
- 238000007254 oxidation reaction Methods 0.000 abstract description 3
- 239000003814 drug Substances 0.000 abstract description 2
- 239000003344 environmental pollutant Substances 0.000 abstract description 2
- 239000002360 explosive Substances 0.000 abstract description 2
- 239000007791 liquid phase Substances 0.000 abstract description 2
- 231100000719 pollutant Toxicity 0.000 abstract description 2
- 238000006116 polymerization reaction Methods 0.000 abstract description 2
- 239000003905 agrochemical Substances 0.000 abstract 1
- 238000006065 biodegradation reaction Methods 0.000 abstract 1
- SPSSULHKWOKEEL-UHFFFAOYSA-N 2,4,6-trinitrotoluene Chemical group CC1=C([N+]([O-])=O)C=C([N+]([O-])=O)C=C1[N+]([O-])=O SPSSULHKWOKEEL-UHFFFAOYSA-N 0.000 description 7
- 238000006701 autoxidation reaction Methods 0.000 description 6
- WQZGKKKJIJFFOK-GASJEMHNSA-N Glucose Natural products OC[C@H]1OC(O)[C@H](O)[C@@H](O)[C@@H]1O WQZGKKKJIJFFOK-GASJEMHNSA-N 0.000 description 4
- 229930006000 Sucrose Natural products 0.000 description 4
- CZMRCDWAGMRECN-UGDNZRGBSA-N Sucrose Chemical compound O[C@H]1[C@H](O)[C@@H](CO)O[C@@]1(CO)O[C@@H]1[C@H](O)[C@@H](O)[C@H](O)[C@@H](CO)O1 CZMRCDWAGMRECN-UGDNZRGBSA-N 0.000 description 4
- 230000033558 biomineral tissue development Effects 0.000 description 4
- 238000010790 dilution Methods 0.000 description 4
- 239000012895 dilution Substances 0.000 description 4
- 239000008103 glucose Substances 0.000 description 4
- 239000005720 sucrose Substances 0.000 description 4
- 241000700141 Rotifera Species 0.000 description 3
- 230000000694 effects Effects 0.000 description 3
- 239000007789 gas Substances 0.000 description 3
- 238000000386 microscopy Methods 0.000 description 3
- 238000006722 reduction reaction Methods 0.000 description 3
- 229920002379 silicone rubber Polymers 0.000 description 3
- 230000031018 biological processes and functions Effects 0.000 description 2
- 239000000463 material Substances 0.000 description 2
- 239000004945 silicone rubber Substances 0.000 description 2
- 239000000126 substance Substances 0.000 description 2
- 208000005623 Carcinogenesis Diseases 0.000 description 1
- 208000031320 Teratogenesis Diseases 0.000 description 1
- 238000010521 absorption reaction Methods 0.000 description 1
- 231100000693 bioaccumulation Toxicity 0.000 description 1
- 230000036952 cancer formation Effects 0.000 description 1
- 231100000504 carcinogenesis Toxicity 0.000 description 1
- 238000005345 coagulation Methods 0.000 description 1
- 230000015271 coagulation Effects 0.000 description 1
- 150000001875 compounds Chemical class 0.000 description 1
- 239000000539 dimer Substances 0.000 description 1
- 238000000605 extraction Methods 0.000 description 1
- 239000000835 fiber Substances 0.000 description 1
- 239000003205 fragrance Substances 0.000 description 1
- 239000011521 glass Substances 0.000 description 1
- 230000002209 hydrophobic effect Effects 0.000 description 1
- 238000004519 manufacturing process Methods 0.000 description 1
- 239000011159 matrix material Substances 0.000 description 1
- 239000012982 microporous membrane Substances 0.000 description 1
- 239000011259 mixed solution Substances 0.000 description 1
- QJGQUHMNIGDVPM-UHFFFAOYSA-N nitrogen group Chemical group [N] QJGQUHMNIGDVPM-UHFFFAOYSA-N 0.000 description 1
- -1 nitrogenous aromatic hydrocarbons Chemical class 0.000 description 1
- 230000003647 oxidation Effects 0.000 description 1
- 239000012071 phase Substances 0.000 description 1
- 230000005180 public health Effects 0.000 description 1
- 231100000241 scar Toxicity 0.000 description 1
- 238000000926 separation method Methods 0.000 description 1
- 239000010865 sewage Substances 0.000 description 1
- 239000000243 solution Substances 0.000 description 1
- 238000009423 ventilation Methods 0.000 description 1
Images
Classifications
-
- 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
Landscapes
- Activated Sludge Processes (AREA)
- Separation Using Semi-Permeable Membranes (AREA)
Abstract
The invention relates to a biological treatment method for polynitro arene or azo dye wastewater, and belongs to the technical field of water treatment of environmental engineering. The method is characterized in that a membrane aeration bioreactor is adopted, oxygen and pollutants enter a biological membrane from two sides of the reactor, and a polynitro arene or azo dye is reduced at a liquid phase main body and an outer layer of the biological membrane to avoid the self-oxidation polymerization of a reduction product and is quickly and aerobically degraded in an inner layer of the biological membrane. The method has the advantages that the method effectively solves the problem that a difficult degradable self-oxidation product is formed in the biological treatment of the polynitro areneor azo dye wastewater to block thorough biodegradation, provides an economic and efficient biological treatment technique for the wastewater, and has wide application prospect in the treatment of exp losive, agricultural chemicals, medicine and dye wastewater.
Description
Technical field
The invention belongs to the technical field of sewage in the environmental engineering, relate to a kind of many nitro-aromatics or azo dye wastewater bioremediation.
Background technology
Many nitro-aromatics and azo dye wastewater are two kinds of typical nitrogenous aromatic hydrocarbons waste water.Be mainly derived from dyestuff, explosive, sterilant and medicine production etc.These two kinds of organic existence of nitrogenous fragrance can cause serious public health and environmental problem, and some material wherein has teratogenesis or carcinogenesis, can be in food chain bio-accumulation, serious threat is to human life security, and these two kinds of compounds have been listed in the environment priority pollutants.
The processing of many nitro-aromatics and azo dye wastewater mainly contains the combination of physics method, chemical method, biological process and these methods.Physical treatment process mainly comprises absorption method, membrane separation process, extraction process, supersonic gas vibrating method, high energy physics method.Commonly used in the chemical method have Coagulation Method, oxidation style, an electrochemical process etc.Therefore because that biological process has is simple to operate, running cost is low, the advantage of non-secondary pollution is the first-selected treatment process of many nitro-aromatics or azo dye wastewater.Biological treatment mainly comprises direct aerobic method and anaerobic-aerobic method.Wherein, latter's treatment effect is better.
But the subject matter that exists in the above-mentioned biological treatment is: usually can form many aromatic amines with autoxidation; they can form the autoxidation product (as the aromatic amine dimer) of extremely difficult degradation in the aerobic treatment process, thereby hinder the thorough degraded of many nitro-aromatics or azoic dyestuff.
Summary of the invention
The technical problem to be solved in the present invention provides a kind of many nitro-aromatics or azo dye wastewater bioremediation, present method hinders its thoroughly biodegradable this technology bottle footpath at forming difficult degradation autoxidation product in many nitro-aromatics or the azo dye wastewater biological treatment, for such waste water provides a kind of bioremediation efficiently.
The technical scheme that technical solution problem of the present invention is adopted is as follows:
Adopt film aeration and biological reactor, mould material plays the effect of oxygen supply and bio-carrier simultaneously; Gas phase is walked the film inner chamber, and waste water is in the film flows outside, and oxygen and pollutent enter in the microbial film from biomembranous both sides respectively.Suitably the pilot-gas dividing potential drop can make reactor liquid phase main body and microbial film skin be anoxic condition, is suitable for many nitro-aromatics or azoic dyestuff and carries out reduction reaction; Reduzate aromatic amine and oxygen present reverse concentration gradient and distribute in microbial film inside, this both can effectively prevent the polymerization of aromatic amine autoxidation, can make aromatic amine aerobic degradation apace again, realize the efficient reduction and the mineralising of many nitro-aromatics or azoic dyestuff in same reactor inter-sync.
Its concrete steps are as follows:
Membrane module adopts ventilation property dense film or hydrophobic microporous membrane in the reactor, as board-like, tubular type or tubular fibre formula.By mixed solution mass transfer in agitator or the water circulation enhanced reactor under water.
Step 2. mud biofilm
Microbe inoculation is to add 0.1-50% (w/w) aromatic amine efficient degradation flora in active sludge or the active sludge, and microbe inoculation concentration is 1-30g/L in the reactor.
Water inlet consists of easily biodegradable organics, (NH
4)
2SO
4, Na
2HPO
4, KH
2PO
4, CaCl
2, MgSO
4And FeCl
3
The membrane module continuous aeration, and keep aeration pressure on bubble point; Temperature remains on 15-40 ℃; Dissolved oxygen is 0.5-10mg/L in the reactor; Water inlet pH value is 6-9.
Spoil disposal after 1-5 days, water inlet continuously.Visible and stable when the microbial film naked eyes, can find a large amount of appearance such as campanularian, wheel animalcule during the microbial film microscopy; Water inlet COD clearance reaches 90% when above, and biofilm is finished.
The domestication of step 3. degraded microorganism
Water inlet consists of many nitro-aromatics or azoic dyestuff, easily biodegradable organics, (NH
4)
2SO
4, Na
2HPO
4, KH
2PO
4, CaCl
2, MgSO
4And FeCl
3, the pH value is 6-9.
During sludge acclimatization, 1-10 times of water inlet dilution, the operation of reactor intermittent mode; The membrane module continuous aeration keeps aeration pressure under bubble point.Whenever water inlet COD clearance reaches 85% when above, progressively strengthen many nitro-aromatics or azoic dyestuff concentration in the water inlet again, enter next round and tame, finish until domestication.
During the sludge acclimatization, temperature remains on 10-40 ℃, dissolved oxygen 0-2mg/L in the reactor.
The startup of step 4. bio-reactor and operation
After sludge acclimatization was finished, reactor began continuous operation.COD removes situation according to water inlet, adjusts matrix load and hydraulic detention time, with the startup of accelerating reactor.
After reactor steady running, many nitro-aromatics or azoic dyestuff are by thoroughly biomineralization in the water inlet.
Reactor run duration, temperature remain on 10-40 ℃, dissolved oxygen 0-2mg/L in the reactor.
Effect of the present invention and benefit are to adopt film aeration and biological reactor, can solve effectively to form difficult degradation autoxidation product in the biological treatment of many nitro-aromatics or azo dye wastewater and hinder its thoroughly biodegradable this technology bottle footpath.The reduction and the mineralising of many nitro-aromatics or azoic dyestuff have been realized in same reactor inter-sync, for such waste water provides a kind of biologic treating technique efficiently.The biological treatment that can be other autoxidation contact scar things is offered reference.
Description of drawings
Accompanying drawing is a process flow sheet of the present invention.
Among the figure: 1 inlet flume; 2 intake pumps; 3 agitators under water; 4 film aeration and biological reactors; 5 effluent troughs, 6 air pumps.
Embodiment
Be described in detail specific embodiments of the invention below in conjunction with technical scheme and accompanying drawing.
Silicone rubber membrane aeration and biological reactor for treatment azo dye wastewater
[1] makes up film aeration and biological reactor
Membrane module adopts spirally wound silicon rubber dense film, film internal diameter 1.5mm, thickness 0.5mm in the reactor; Reactor is made of synthetic glass, useful volume 2L, magnetic stirrer.Technical process as shown in Figure 1.
[2] mud biofilm
Microbe inoculation is an active sludge, and its concentration in reactor is 4g/L.
Water inlet consists of sucrose 400mg/L, (NH
4)
2SO
4, Na
2HPO
4, KH
2PO
4, micro-CaCl
2, MgSO
4, FeCl
3, COD: N: P=100: 5: 1, the pH value was 7.0.
At first intermittent mode water inlet; The membrane module continuous aeration, and keep aeration pressure on bubble point; Temperature remains on 30 ± 1 ℃; Dissolved oxygen＞3.5mg/L in the reactor.
Spoil disposal after 2 days, water inlet continuously.Visible and stable when the microbial film naked eyes, can find a large amount of appearance such as campanularian, wheel animalcule during the microbial film microscopy; Water inlet COD clearance reaches 90% when above, and biofilm is finished.
[3] domestication of degraded microorganism
Water inlet consists of the listed azoic dyestuff 180mg/L of table 1, sucrose 300mg/L, (NH
4)
2SO
4, Na
2HPO
4, KH
2PO
4, micro-CaCl
2, MgSO
4, FeCl
3, COD: N: P=100: 5: 1.
The intermittent mode water inlet; The membrane module continuous aeration keeps aeration pressure under bubble point.As initially intaking, the COD clearance reaches 85% when above in water inlet, progressively increases water inlet azoic dyestuff concentration again, enters next round and tames, and finishes until domestication with 4 times of former water inlet dilutions.
During the sludge acclimatization, temperature remains on 30 ± 1 ℃, dissolved oxygen＜0.2mg/L in the reactor, and water inlet pH value is 7.0.
The used azoic dyestuff of table 1
[4] startup of bio-reactor and operation
After sludge acclimatization was finished, reactor began continuous operation.Water inlet consists of the listed azoic dyestuff 180mg/L of table 1, sucrose 300mg/L, (NH
4)
2SO
4, Na
2HPO
4, KH
2PO
4, micro-CaCl
2, MgSO
4, FeCl
3, COD: N: P=100: 5: 1.
Reactor run duration, temperature remain on 30 ± 1 ℃, dissolved oxygen＜0.2mg/L in the reactor, and hydraulic detention time 30h, water inlet pH value is 7.0.
After reactor steady running, azoic dyestuff is by biomineralization in the water inlet.
Embodiment 2
Silicone rubber membrane aeration and biological reactor for treatment trotyl (TNT) waste water
[1] presses embodiment 1 and make up film aeration and biological reactor
[2] press embodiment 1 mud biofilm
[3] domestication of degraded microorganism
Water inlet is the TNT simulated wastewater, and it consists of TNT 120mg/L, glucose 300mg/L, (NH
4)
2SO
4, Na
2HPO
4, KH
2PO
4, micro-CaCl
2, MgSO
4, FeCl
3, COD: N: P=100: 5: 1, the pH value was 7.0.
Sludge acclimatization is carried out with intermittent mode; The membrane module continuous aeration keeps aeration pressure under bubble point.As initially intaking, the COD clearance reaches 85% when above in water inlet, progressively increases water inlet TNT concentration again, enters next round and tames, and finishes until domestication with 3 times of former water inlet dilutions.During the sludge acclimatization, temperature remains on 30 ± 1 ℃, dissolved oxygen＜0.2mg/L in the reactor.
[4] startup of bio-reactor and operation
After sludge acclimatization was finished, reactor began continuous operation.TNT 120mg/L, glucose 300mg/L, (NH
4)
2SO
4, Na
2HPO
4, KH
2PO
4, micro-CaCl
2, MgSO
4, FeCl
3, COD: N: P=100: 5: 1, the pH value was 7.0.
Reactor run duration, hydraulic detention time are 36h, and temperature remains on 30 ± 1 ℃, dissolved oxygen＜0.2mg/L in the reactor.
After reactor steady running, TNT is by biomineralization in the water inlet.
Embodiment 3
Biological reinforced film aeration and biological reactor for treatment azo dye wastewater
[1] presses embodiment 1 and make up film aeration and biological reactor
[2] mud biofilm
Microbe inoculation is active sludge+9% (w/w) aromatic amine efficient degradation flora, and microbe inoculation concentration in reactor is 4g/L.
Water inlet consists of sucrose 350mg/L, (NH
4)
2SO
4, Na
2HPO
4, KH
2PO
4, micro-CaCl
2, MgSO
4, FeCl
3, COD: N: P=100: 5: 1, the pH value was 7.0.
At first intermittent mode water inlet; The membrane module continuous aeration, and keep aeration pressure on bubble point; Temperature remains on 30 ± 1 ℃; Dissolved oxygen＞3.5mg/L in the reactor.
Spoil disposal after 2 days, water inlet continuously.Visible and stable when the microbial film naked eyes, can find a large amount of appearance such as campanularian, wheel animalcule during the microbial film microscopy; Water inlet COD clearance reaches 90% when above, and biofilm is finished.
[3] domestication of degraded microorganism
Water inlet consists of the listed azoic dyestuff 200mg/L of table 1, glucose 300mg/L, (NH
4)
2SO
4, Na
2HPO
4, KH
2PO
4, micro-CaCl
2, MgSO
4, FeCl
3, COD: N: P=100: 5: 1.
The intermittent mode water inlet; The membrane module continuous aeration keeps aeration pressure under bubble point.As initially intaking, the COD clearance reaches 85% when above in water inlet, progressively increases water inlet azoic dyestuff concentration again, enters next round and tames, and finishes until domestication with 3 times of former water inlet dilutions.
During the sludge acclimatization, temperature remains on 30 ± 1 ℃, dissolved oxygen＜0.2mg/L in the reactor, and water inlet pH value is 7.0.
[4] startup of bio-reactor and operation
After sludge acclimatization was finished, reactor began continuous operation.Water inlet consists of the listed azoic dyestuff 200mg/L of table 1, glucose 300mg/L, (NH
4)
2SO
4, Na
2HPO
4, KH
2PO
4, micro-CaCl
2, MgSO
4, FeCl
3, COD: N: P=100: 5: 1.
Reactor run duration, temperature remain on 30 ± 1 ℃, dissolved oxygen＜0.2mg/L in the reactor, and hydraulic detention time 22h, water inlet pH value is 7.0.
After reactor steady running, azoic dyestuff is by biomineralization in the water inlet.
Claims (1)
1. nitro-aromatic more than a kind or azo dye wastewater bioremediation is characterized in that may further comprise the steps:
(1) makes up film aeration and biological reactor;
(2) mud biofilm: add 0.1-50% (w/w) aromatic amine efficient degradation flora in the film aeration and biological reactor in inoculation of activated-sludge or the active sludge; The membrane module continuous aeration, and keep aeration pressure on bubble point;
(3) domestication of degraded microorganism: water inlet consists of many nitro-aromatics or azoic dyestuff, easily biodegradable organics, (NH
4)
2SO
4, Na
2HPO
4, KH
2PO
4, CaCl
2, MgSO
4And FeCl
3Biomembranous internal layer is the aromatic amine aerobic degradation microbial community on the membrane module; Dissolved oxygen is 2mg/L in the film aeration and biological reactor;
(4) in the startup of bio-reactor and when operation,, dissolved oxygen is 2mg/L in the film aeration and biological reactor.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2009100117777A CN101565231B (en) | 2009-05-25 | 2009-05-25 | Biological treatment method for polynitro arene or azo dye wastewater |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2009100117777A CN101565231B (en) | 2009-05-25 | 2009-05-25 | Biological treatment method for polynitro arene or azo dye wastewater |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN101565231A CN101565231A (en) | 2009-10-28 |
| CN101565231B true CN101565231B (en) | 2011-07-20 |
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ID=41281631
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN2009100117777A Expired - Fee Related CN101565231B (en) | 2009-05-25 | 2009-05-25 | Biological treatment method for polynitro arene or azo dye wastewater |
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| Country | Link |
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| CN (1) | CN101565231B (en) |
Families Citing this family (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103723888B (en) * | 2013-12-14 | 2015-02-25 | 陈秀琼 | Technology for treating bleaching and dyeing waste water |
| CN103848545A (en) * | 2014-03-25 | 2014-06-11 | 中国地质大学（武汉） | Membrane aeration biomembrane reactor-based restaurant waste water treatment device |
| CN107596905A (en) * | 2016-07-11 | 2018-01-19 | 天津工业大学 | The apparatus and method that membrane aeration biomembrane reactor purifies the waste gas containing VOCs |
| CN108706714B (en) * | 2018-05-21 | 2020-12-11 | 大连理工大学 | Method for treating nitroaromatic wastewater by activating persulfate through lignite and metal/organic matter co-loaded modified lignite pyrolysis product |
| CN109650531B (en) * | 2019-01-04 | 2021-08-17 | 南京农业大学 | Issatchenkia orientalis strain ZT-C2 combined MABR process and application thereof |
| CN115784431B (en) * | 2022-12-07 | 2023-07-14 | 哈尔滨工业大学 | Membrane CO for maintaining carbon-oxygen balance of photobiological membrane system 2 Sewage treatment method and device |
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