CN103496785A - Degradation-resistant waste water graphene enhanced anaerobic treatment method - Google Patents

Degradation-resistant waste water graphene enhanced anaerobic treatment method Download PDF

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CN103496785A
CN103496785A CN201310486371.0A CN201310486371A CN103496785A CN 103496785 A CN103496785 A CN 103496785A CN 201310486371 A CN201310486371 A CN 201310486371A CN 103496785 A CN103496785 A CN 103496785A
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reactor
anaerobic
sludge
graphene
waste water
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CN201310486371.0A
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王竞
汪迪
吕红
柳广飞
金若菲
周集体
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Dalian University of Technology
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Dalian University of Technology
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Abstract

The invention relates to a degradation-resistant waste water graphene enhanced anaerobic treatment method and belongs to the technical field of environmental engineering water treatment. The method is characterized in that after sludge pretreatment and taming, graphene-anaerobic sludge composite is prepared in situ in an anaerobic bioreactor to form an anaerobic sludge expansion bed good in mass transfer and sedimentation performance, and accordingly extracellular electron transfer performance and anaerobic metabolism are enhanced to increase anaerobic hydrolytic acidification and methane generating performance of degradation-resistant waste water. The method has the advantages that the graphene-anaerobic sludge composite is simple in preparation process, high in bioactivity and high in stability. The method is low in reactor configuration requirements, fast in starting, simple to operate and low in energy consumption, and defects of current anaerobic treatment processes of degradation-resistant waste water such as phenols waste water, dye waste water and nitro-aromatic waste water are overcome.

Description

A kind of Graphene reinforced anaerobic is processed the method for used water difficult to degradate
Technical field
The invention belongs to the technical field of sewage in environmental engineering, relate to a kind of method that Graphene reinforced anaerobic is processed used water difficult to degradate.
Background technology
Along with the development of industrial or agricultural, produced a large amount of poisonous hardly degraded organic substances, as aromatic compound and halogenated aryl hydrocarbon etc.These compounds are widely used in entering physical environment in people's production and life and through number of ways, present the characteristics such as extended residual and high toxicity, can cause serious public health and environmental problem.The processing of poisonous difficult degradation pollutent waste water has the combination of physics, chemistry, biological process and these methods.Wherein, that biological process has is simple to operate, running cost is low, and the advantage of non-secondary pollution, be the first-selected treatment technology of used water difficult to degradate.Hardly degraded organic substance is processed and can be improved its biodegradability through anaerobic hydrolysis-acidification, and the simple aromatic compound of certain structures is anaerobe mineralising and product methane directly, and therefore, the anaerobic biological treatment used water difficult to degradate has obvious technology and economic advantages.Common used water difficult to degradate anaerobic treatment process mainly contains anaerobic activated sludge method, anaerobic grain sludge method, inert support absorption or embedded immobilization method etc. at present.
But the subject matter existed in above-mentioned Anaerobic treatment technique is: in (1) anaerobic activated sludge method, difficult degradation pollutent anaerobic metabolism speed is slow, degradation rate is low, the anti impulsion load poor performance; (2) large, the mechanical property of the resistance to mass transfer of embedded immobilization microbial particle and biological activity is lower and cost of manufacture is high, seriously limited its large-scale application; (3), in the inert support absorbing process, biofilm difficulty, start-up period length, microbial film easily come off; (4) in anaerobic grain sludge technique, the reactor start-up time is long, the granule sludge resistance to mass transfer is large, poor stability; Some technique is in order to improve mass-transfer performance, and the higher upflow velocity formed by the effluent recycling mode increases energy consumption, and reactor configuration is had higher requirements.
Summary of the invention
The objective of the invention is the drawback existed in current common Anaerobic treatment technique, a kind of economy, efficient used water difficult to degradate anaerobic biological treatment method are provided.
Technical solution of the present invention is to prepare Graphene-anaerobic sludge complex body at the anaerobic biological reactor situ, form all good anaerobic sludge expanded beds of mass-transfer performance and settling property, transmit performance and anaerobic metabolism process with strengthening born of the same parents exoelectron, thereby improved the used water difficult to degradate anaerobic hydrolysis-acidification and produced the methane performance.Its concrete steps are as follows:
Step 1. sludge pretreatment
Add fresh active sludge in anaerobic biological reactor, regulating its concentration is 3-20g/L, and initial pH is controlled at 8-11, and temperature is controlled at 20-60 ℃, by recycle pump, makes mud at reactor internal recycle 12-48h.
Step 2. sludge acclimatization
Sludge acclimatization is initial, and used water difficult to degradate dilution 1-10 is doubly rear as water inlet, the operation of anaerobic reactor intermittent mode; Whenever the influent COD clearance reaches 80% when above, more progressively strengthen used water difficult to degradate ratio in water inlet, enter the next round domestication, until tamed.During sludge acclimatization, temperature remains on 10-60 ℃, and in reactor, dissolved oxygen is less than 0.5mg/L.
Step 3. Graphene-anaerobic sludge compound system is standby
After sludge acclimatization completes, add the graphene oxide that length of a film is 1-10 μ m, graphene oxide is controlled at 0.005-0.2 with the sludge quality ratio, and in reactor, temperature remains on 10-60 ℃, and dissolved oxygen is less than 0.5mg/L, reaction 18-36h.
Step 4. reactor start-up and operation
Graphene-anaerobic sludge compound system is for after completing, and reactor starts continuous operation.Remove situation according to influent COD, adjust matrix load and hydraulic detention time, with the startup of accelerating reactor.
After reactor steady running, in water inlet, the difficult degradation pollutent is removed by anaerobism.
The reactor run duration, temperature remains on 10-60 ℃, and in reactor, dissolved oxygen is less than 0.5mg/L.
Effect of the present invention and benefit are:
(1) preparation technology of Graphene-anaerobic sludge complex body is simple, biological activity is high, have good settleability and stability.
(2) the method to reactor configuration require low, start quick, simple to operate, energy consumption is low.
(3) the method overcomes the many drawbacks that exist in current used water difficult to degradate anaerobic treatment process, for such waste water provides a kind of economy and efficient biologic treating technique.
The accompanying drawing explanation
Fig. 1 is the stereoscan photograph figure of Graphene provided by the invention-anaerobic sludge complex body.
Fig. 2 is the graphic representation of Graphene reinforced anaerobic treatment of Nitrobenzene waste water provided by the invention.In figure, ordinate zou means nitro phenenyl concentration, and unit is mg/L; X-coordinate means the time, and unit is sky.-◆-represent reactor water inlet nitro phenenyl concentration;-■-represent reactor water outlet nitro phenenyl concentration.After Fig. 2 shows reactor steady running, the oil of mirbane clearance remains on 90% left and right.
Embodiment
Describe specific embodiments of the invention in detail below in conjunction with technical scheme and accompanying drawing.
Embodiment 1
Graphene reinforced anaerobic Phenol-Containing Wastewater Treatment
[1] sludge pretreatment
Add fresh active sludge in upflow anaerobic sludge blanket reactor, regulating its concentration is 8g/L, and initial pH is controlled at 10, and temperature is controlled at 30 ± 1 ℃, by recycle pump, makes mud at reactor internal recycle 16h.
[2] sludge acclimatization
Influent composition is phenol 1000mg/L, (NH 4) 2sO 4, Na 2hPO 4, KH 2pO 4, micro-CaCl 2, MgSO 4, FeCl 3, COD:N:P=200:5:1.
Former water inlet is diluted to 8 times as initially intaking, the operation of reactor intermittent mode; Whenever the influent COD clearance reaches 80% when above, more progressively strengthen phenolic waste water ratio in water inlet, enter the next round domestication, until tamed.During sludge acclimatization, temperature remains on 30 ± 1 ℃, and in reactor, dissolved oxygen is less than 0.2mg/L.
[3] Graphene-anaerobic sludge compound system is standby
After sludge acclimatization completes, add the graphene oxide that length of a film is 3-5 μ m, graphene oxide is controlled at 0.075 with the sludge quality ratio, and in reactor, temperature remains on 30 ± 1 ℃, and dissolved oxygen is less than 0.2mg/L, reaction 24h.
[4] reactor start-up and operation
Graphene-anaerobic sludge compound system is for after completing, and reactor starts continuous operation.Influent composition is phenol 1000mg/L, (NH 4) 2sO 4, Na 2hPO 4, KH 2pO 4, micro-CaCl 2, MgSO 4, FeCl 3, COD:N:P=200:5:1.
The reactor run duration, hydraulic detention time is 24h, and temperature remains on 30 ± 1 ℃, and in reactor, dissolved oxygen is less than 0.2mg/L.
After reactor steady running, in water inlet, phenol is by anaerobic degradation.
Embodiment 2
Graphene reinforced anaerobic treatment of Nitrobenzene waste water
[1] sludge pretreatment
Add fresh active sludge in upflow anaerobic sludge blanket reactor, regulating its concentration is 6g/L, and initial pH is controlled at 9, and temperature is controlled at 30 ± 1 ℃, by recycle pump, makes mud at reactor internal recycle 20h.
[2] sludge acclimatization
Influent composition is oil of mirbane 300mg/L, sucrose 1000mg/L, (NH 4) 2sO 4, Na 2hPO 4, KH 2pO 4, micro-CaCl 2, MgSO 4, FeCl 3, COD:N:P=200:5:1.
Former water inlet is diluted to 5 times as initially intaking, the operation of reactor intermittent mode; Whenever the influent COD clearance reaches 80% when above, more progressively strengthen nitrobenzene waste water ratio in water inlet, enter the next round domestication, until tamed.During sludge acclimatization, temperature remains on 30 ± 1 ℃, and in reactor, dissolved oxygen is less than 0.2mg/L.
[3] Graphene-anaerobic sludge compound system is standby
After sludge acclimatization completes, add the graphene oxide that length of a film is 3-5 μ m, graphene oxide is controlled at 0.05 with the sludge quality ratio, and in reactor, temperature remains on 30 ± 1 ℃, and dissolved oxygen is less than 0.2mg/L, reaction 24h.
[4] reactor start-up and operation
Graphene-anaerobic sludge compound system is for after completing, and reactor starts continuous operation.Influent composition is oil of mirbane 300mg/L, sucrose 1000mg/L, (NH 4) 2sO 4, Na 2hPO 4, KH 2pO 4, micro-CaCl 2, MgSO 4, FeCl 3, COD:N:P=200:5:1.
The reactor run duration, temperature remains on 30 ± 1 ℃, and in reactor, dissolved oxygen is less than 0.2mg/L, and hydraulic detention time is 24h.
After reactor steady running, in water inlet, oil of mirbane is removed by anaerobism.
Embodiment 3
The Graphene reinforced anaerobic is processed azo dye wastewater
[1] sludge pretreatment
Add fresh active sludge in upflow anaerobic sludge blanket reactor, regulating its concentration is 10g/L, and initial pH is controlled at 10, and temperature is controlled at 30 ± 1 ℃, by recycle pump, makes mud at reactor internal recycle 24h.
[2] sludge acclimatization
Influent composition is Acid Brilliant Scarlet GR 200mg/L, sucrose 800mg/L, (NH 4) 2sO 4, Na 2hPO 4, KH 2pO 4, micro-CaCl 2, MgSO 4, FeCl 3, COD:N:P=200:5:1.
Former water inlet is diluted to 4 times as initially intaking, the operation of reactor intermittent mode; Whenever the influent COD clearance reaches 80% when above, more progressively strengthen azo dye wastewater ratio in water inlet, enter the next round domestication, until tamed.During sludge acclimatization, temperature remains on 28 ± 1 ℃, and in reactor, dissolved oxygen is less than 0.2mg/L.
[3] Graphene-anaerobic sludge compound system is standby
After sludge acclimatization completes, add the graphene oxide that length of a film is 1-3 μ m, graphene oxide is controlled at 0.06 with the sludge quality ratio, and in reactor, temperature remains on 28 ± 1 ℃, and dissolved oxygen is less than 0.2mg/L, reaction 24h.
[4] reactor start-up and operation
Graphene-anaerobic sludge compound system is for after completing, and reactor starts continuous operation.Influent composition is Acid Brilliant Scarlet GR 200mg/L, sucrose 800mg/L, (NH 4) 2sO 4, Na 2hPO 4, KH 2pO 4, micro-CaCl 2, MgSO 4, FeCl 3, COD:N:P=200:5:1.
The reactor run duration, temperature remains on 28 ± 1 ℃, and in reactor, dissolved oxygen is less than 0.2mg/L, and hydraulic detention time is 12h.
After reactor steady running, in water inlet, Acid Brilliant Scarlet GR is removed by anaerobism.

Claims (1)

1. a Graphene reinforced anaerobic is processed the method for used water difficult to degradate, it is characterized in that comprising the following steps:
(1) sludge pretreatment: add fresh active sludge in anaerobic biological reactor, regulating its concentration is 3-20g/L, and initial pH is controlled at 8-11, and temperature is controlled at 20-60 ℃, by recycle pump, makes mud at reactor internal recycle 12-48h;
(2) sludge acclimatization: sludge acclimatization is initial, and used water difficult to degradate dilution 1-10 is doubly rear as water inlet, the operation of anaerobic reactor intermittent mode; Whenever the influent COD clearance reaches 80% when above, more progressively strengthen used water difficult to degradate ratio in water inlet, enter the next round domestication, until tamed; During sludge acclimatization, temperature remains on 10-60 ℃, and in reactor, dissolved oxygen is less than 0.5mg/L;
(3) Graphene-anaerobic sludge compound system is standby: after sludge acclimatization completes, add the graphene oxide that length of a film is 1-10 μ m, graphene oxide is controlled at 0.005-0.2 with the sludge quality ratio, and in reactor, temperature remains on 10-60 ℃, dissolved oxygen is less than 0.5mg/L, reaction 18-36h;
(4) reactor start-up and operation: Graphene-anaerobic sludge compound system is for after completing, and reactor starts continuous operation; Remove situation according to influent COD, adjust matrix load and hydraulic detention time, with the startup of accelerating reactor; After reactor steady running, in water inlet, the difficult degradation pollutent is removed by anaerobism; The reactor run duration, temperature remains on 10-60 ℃, and in reactor, dissolved oxygen is less than 0.5mg/L.
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Cited By (16)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN105347480A (en) * 2015-11-18 2016-02-24 大连理工大学 Method used for promoting biological reduction of nitrobenzene with biological carbon
CN106830311A (en) * 2017-03-01 2017-06-13 大连理工大学 A kind of graphene oxide and naphtoquinone compounds are modified the preparation method of hydroxyl macrocellular foam carrier altogether
CN107043162A (en) * 2017-06-26 2017-08-15 苏州科技大学 A kind of method of straw activated carbon reinforced anaerobic sludge Combined Processing azo dye wastewater
CN107176701A (en) * 2017-07-25 2017-09-19 南京大学盐城环保技术与工程研究院 A kind of broad spectrum activity control biochemical sludge expansion medicament and preparation method
CN107215956A (en) * 2017-06-26 2017-09-29 苏州科技大学 A kind of method of carbon-nanotube enhanced anaerobic sludge Combined Processing azo dye wastewater
CN107500406A (en) * 2017-10-10 2017-12-22 中国科学技术大学 The processing method and benzoic acid anaerobic biodegradation method of the waste water containing benzoic acid
CN108689564A (en) * 2018-06-25 2018-10-23 同济大学 A method of anaerobic sludge digestion methane phase gas is promoted using graphene
CN105668767B (en) * 2016-04-13 2018-12-25 大连理工大学 A kind of insoluble redox mediators type bio-carrier and preparation method thereof
CN109534510A (en) * 2019-01-11 2019-03-29 青岛科技大学 A kind of method of chemical method strengthened anaerobic ammoxidation denitrification process
CN111500646A (en) * 2020-05-06 2020-08-07 苏州科技大学 Method for producing methane from phenol-containing waste water
CN111517460A (en) * 2020-04-13 2020-08-11 上海应用技术大学 Domestication method of anaerobic granular sludge
CN111689649A (en) * 2020-06-19 2020-09-22 安徽国星生物化学有限公司 Treatment method of acetaldehyde wastewater
CN111924964A (en) * 2020-07-06 2020-11-13 广州大学 Aerobic granular sludge and culture method thereof
CN113582463A (en) * 2021-08-16 2021-11-02 三桶油环保科技(宜兴)有限公司 Direct-discharge treatment method for high-salinity fracturing flowback fluid
CN113652453A (en) * 2021-08-16 2021-11-16 海南大学 Method for promoting anaerobic methanation of organic acid by using nano graphene
CN115259367A (en) * 2022-07-26 2022-11-01 上海净豚环保科技有限公司 Method for proliferating and culturing anaerobic granular sludge for food wastewater

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Cited By (18)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN105347480A (en) * 2015-11-18 2016-02-24 大连理工大学 Method used for promoting biological reduction of nitrobenzene with biological carbon
CN105668767B (en) * 2016-04-13 2018-12-25 大连理工大学 A kind of insoluble redox mediators type bio-carrier and preparation method thereof
CN106830311A (en) * 2017-03-01 2017-06-13 大连理工大学 A kind of graphene oxide and naphtoquinone compounds are modified the preparation method of hydroxyl macrocellular foam carrier altogether
CN107043162A (en) * 2017-06-26 2017-08-15 苏州科技大学 A kind of method of straw activated carbon reinforced anaerobic sludge Combined Processing azo dye wastewater
CN107215956A (en) * 2017-06-26 2017-09-29 苏州科技大学 A kind of method of carbon-nanotube enhanced anaerobic sludge Combined Processing azo dye wastewater
CN107176701A (en) * 2017-07-25 2017-09-19 南京大学盐城环保技术与工程研究院 A kind of broad spectrum activity control biochemical sludge expansion medicament and preparation method
CN107500406A (en) * 2017-10-10 2017-12-22 中国科学技术大学 The processing method and benzoic acid anaerobic biodegradation method of the waste water containing benzoic acid
CN108689564A (en) * 2018-06-25 2018-10-23 同济大学 A method of anaerobic sludge digestion methane phase gas is promoted using graphene
CN109534510A (en) * 2019-01-11 2019-03-29 青岛科技大学 A kind of method of chemical method strengthened anaerobic ammoxidation denitrification process
CN111517460A (en) * 2020-04-13 2020-08-11 上海应用技术大学 Domestication method of anaerobic granular sludge
CN111500646A (en) * 2020-05-06 2020-08-07 苏州科技大学 Method for producing methane from phenol-containing waste water
CN111689649A (en) * 2020-06-19 2020-09-22 安徽国星生物化学有限公司 Treatment method of acetaldehyde wastewater
CN111924964A (en) * 2020-07-06 2020-11-13 广州大学 Aerobic granular sludge and culture method thereof
CN113582463A (en) * 2021-08-16 2021-11-02 三桶油环保科技(宜兴)有限公司 Direct-discharge treatment method for high-salinity fracturing flowback fluid
CN113652453A (en) * 2021-08-16 2021-11-16 海南大学 Method for promoting anaerobic methanation of organic acid by using nano graphene
CN113652453B (en) * 2021-08-16 2023-10-24 海南大学 Method for promoting anaerobic methanation of organic acid by utilizing nano graphene
CN115259367A (en) * 2022-07-26 2022-11-01 上海净豚环保科技有限公司 Method for proliferating and culturing anaerobic granular sludge for food wastewater
CN115259367B (en) * 2022-07-26 2023-11-17 上海净豚环保科技有限公司 Proliferation and bacteria cultivation method of anaerobic granular sludge for food wastewater

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