CN109250816A - A method of based on electron donor type bio-carrier enhanced sewage anaerobic hydrolysis-acidification - Google Patents
A method of based on electron donor type bio-carrier enhanced sewage anaerobic hydrolysis-acidification Download PDFInfo
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- CN109250816A CN109250816A CN201811099317.XA CN201811099317A CN109250816A CN 109250816 A CN109250816 A CN 109250816A CN 201811099317 A CN201811099317 A CN 201811099317A CN 109250816 A CN109250816 A CN 109250816A
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- electron donor
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- C—CHEMISTRY; METALLURGY
- C02—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
- C02F—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
- C02F3/00—Biological treatment of water, waste water, or sewage
- C02F3/28—Anaerobic digestion processes
- C02F3/2806—Anaerobic processes using solid supports for microorganisms
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- C—CHEMISTRY; METALLURGY
- C02—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
- C02F—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
- C02F3/00—Biological treatment of water, waste water, or sewage
- C02F3/28—Anaerobic digestion processes
- C02F3/2866—Particular arrangements for anaerobic reactors
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- C—CHEMISTRY; METALLURGY
- C02—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
- C02F—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
- C02F2305/00—Use of specific compounds during water treatment
- C02F2305/06—Nutrients for stimulating the growth of microorganisms
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- Biodiversity & Conservation Biology (AREA)
- Hydrology & Water Resources (AREA)
- Engineering & Computer Science (AREA)
- Environmental & Geological Engineering (AREA)
- Water Supply & Treatment (AREA)
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- Organic Chemistry (AREA)
- Purification Treatments By Anaerobic Or Anaerobic And Aerobic Bacteria Or Animals (AREA)
Abstract
The invention discloses a kind of methods based on electron donor type bio-carrier enhanced sewage anaerobic hydrolysis-acidification.It uses electron donor type bio-carrier, is added in anaerobic reactor with certain proportion, guarantees sufficiently fluidizing and being uniformly distributed for carrier by mechanical stirring mode.It effectively enhances anaerobism atmosphere and system is maintained to stablize, and improves the activity of microorganism, improves the enrichment of functional flora on attached biological film, and then promotes the hydrolysis acidification effect of system.
Description
Technical field
The present invention relates to a kind of methods based on electron donor type bio-carrier enhanced sewage anaerobic hydrolysis-acidification, belong to dirt
The biologic treating technique field of water.
Background technique
Many industrial trades can all discharge the used water difficult to degradate of middle and high concentration.Industrial wastewater is many kinds of, complicated component,
The often noxious material containing there are many pollutes environment and has very big harm to human health, such as slaughtering wastewater, food processing wastewater, water
Aquaculture waste, waste water from dyestuff, pharmacy waste water, wastewater from chemical industry etc..Currently, raising waste water used in such wastewater treatment can give birth to
Change property method first is that hydrolysis acidification, i.e., it is organic to be degraded to degradable small molecule for the macromolecule organic of difficult for biological degradation
Object.During hydrolysis acidification handles waste water, microorganism plays a decisive role, composition, activity and the number of microbial population
Amount largely will affect effluent quality.Meanwhile the biodegradability for relying only on suspended sludge often results in hydrolysis acid
The processing load of change is very low or biodegradability promotion is smaller.Therefore, method appropriate or measure is taken to optimize the process
Regulation, excites the potential of microorganism, to achieve the purpose that improve hydrolysis acidification efficiency.At sewage based on suspended biological carrier
Reinforcement technique is managed, on the basis of not destroying prior art, is different from hanging by adding a certain amount of bio-carrier and can be obtained
The attached biomembrane of floating sludge microbe population structure, to promote the processing load of hydrolysis acidification.However, traditional biology
Not only biofilm effect is poor for carrier, but also does not have the effect for improving functional microbial flora performance in water treatment system, from
And cause its wastewater treatment efficiency undesirable.The intracorporal various biochemical reactions of microbial cell are gone back in specific oxidation
Occur within the scope of former current potential and complete, oxidation-reduction potential has epochmaking influence to microbial life activity.In general,
The oxidation reaction current potential of anaerobic hydrolysis-acidification is lower than 100mV, is suppressed anaerobe growth.
Electron donor such as Zero-valent Iron, zeroth order zinc can significantly reduce the oxidation-reduction potential in anaerobic reactor, enhance anaerobism atmosphere, have
Help the growth of anaerobe.Meanwhile electron donor can neutralize organic acid, reduce acid, balance pH, systems stabilisation.Separately
Outside, electron donor also has facilitation to the synthesis secretion of enzyme in microbial cell and activity, thus function in inducing microbial
The enrichment of energy property flora, and then the hydrolysis acidification effect of promotion system.It is raw that resulting electron donor type is prepared by blending and modifying
Object carrier is due to being mixed with electron donor substance and hydrophilic electrophilic substance, therefore it not only shows good bioaffinity, and
Anaerobism atmosphere can effectively be enhanced and system is maintained to stablize, promote the redox reaction in microbial cell, promote microorganism
Activity, be conducive to the enrichment of the microbial function flora on coherent film, to improve the hydrolysis acidification effect of system.It is based on
More than, it is an object of the invention to electron donor type bio-carrier is applied to Hydrolysis Acidification to reach higher hydrolysis acid
Change effect.
Summary of the invention
Low for existing anaerobic hydrolysis-acidification load, biodegradability promotes the problems such as not high, and the present invention intends to provide one
Method of the kind based on electron donor type bio-carrier enhanced sewage anaerobic hydrolysis-acidification.
Technical solution of the present invention:
A method of based on electron donor type bio-carrier enhanced sewage anaerobic hydrolysis-acidification, comprising the following steps:
(1) a certain amount of electron donor type bio-carrier is added into anaerobic reactor.The electron donor type bio-carrier
It is by electron donor substance and polyethylene base-material and auxiliary material by being blended and Screw Extrusion technique is prepared.Bio-carrier adds
Amount is no more than the 70% of reactor dischargeable capacity.
(2) anaerobic reactor is equipped with blender by the way of intaking from bottom to top in reactor, and water outlet is equipped with life
Object carrier device for trapping.
(3) returned sludge is back to anaerobic reactor bottom from biochemical secondary settling tank, and reflux ratio maintains to detest 10% or more
Sludge concentration is not less than 3000mg/L in oxygen reactor, is kept for residence time of the waste water in anaerobic reactor at 2 hours or more.
Beneficial effects of the present invention:
(1) the electron donor type carrier added due to being mixed with electron donor substance, can regulating system pH in favor of micro-
Biological growth can effectively enhance anaerobism atmosphere and system is maintained to stablize, improve the activity of microorganism, be conducive on coherent film
The enrichment of microbial function flora, and then promote anaerobic hydrolysis-acidification process.
(2) the electron donor type carrier added accelerates attached growth of microorganisms speed due to the improvement of bioaffinity.
(3) adding for carrier will not destroy raw water solution acidification technique, be conducive to the upgrading of original process.
Specific embodiment
Narration a specific embodiment of the invention is carried out below in conjunction with technical solution.
Embodiment 1
1) start and tame anaerobic reactor using the excess sludge of sewage treatment plant；2) sludge acclimatization is for a period of time
Afterwards, then into anaerobic reactor the electron donor type bio-carrier for accounting for reactor dischargeable capacity 30% is added.The electron donor type
Bio-carrier is by electron donor substance and polyethylene base-material and auxiliary material by being blended and Screw Extrusion technique is prepared.Biology
Carrier flows through mechanical stirring realization, and controls dissolved oxygen concentration in reactor and be lower than 0.1mg/L；3) anaerobic reactor is adopted
With the mode intake from bottom to top, reactor is interior to be equipped with blender, and water outlet is equipped with bio-carrier device for trapping；4) returned sludge
It is back to anaerobic reactor bottom from biochemical secondary settling tank, reflux ratio 50% keeps the sludge concentration in reactor to be in
3000~3500mg/L；5) keeping residence time of the waste water in anaerobic reactor is 3 hours.When using sucrose as carbon source, water inlet
Water-quality COD is 400mg/L, NH4 +- N is 40mg/L, and when TP is 4mg/L, COD removal rate can reach 45.3%, and carrier is relatively not used
Anaerobic reactor improve 14.5%, and ORP reduces 24mV in reactor, is discharged contained VFA and improves about 17mg/L.
Embodiment 2
1) start and tame anaerobic reactor using the excess sludge of sewage treatment plant；2) sludge acclimatization is for a period of time
Afterwards, then into anaerobic reactor the electron donor type bio-carrier for accounting for reactor dischargeable capacity 30% is added.The electron donor type
Bio-carrier is by electron donor substance and polyethylene base-material and auxiliary material by being blended and Screw Extrusion technique is prepared.Biology
Carrier flows through mechanical stirring realization, and controls dissolved oxygen concentration in reactor and be lower than 0.1mg/L；3) anaerobic reactor is adopted
With the mode intake from bottom to top, reactor is interior to be equipped with blender, and water outlet is equipped with bio-carrier device for trapping；4) returned sludge
It is back to anaerobic reactor bottom from biochemical secondary settling tank, reflux ratio 60% keeps the sludge concentration in reactor to be in
4000~4500mg/L；5) keeping residence time of the waste water in anaerobic reactor is 6 hours.When with sucrose and soybean protein with
For 1:1 as compounded carbons, influent quality COD is 1600mg/L, NH4 +- N is 40mg/L, and when TP is 4mg/L, COD removal rate is reachable
To 48.3%, the anaerobic reactor that carrier is relatively not used improves 26.1%.
Claims (2)
1. a kind of method based on electron donor type bio-carrier enhanced sewage anaerobic hydrolysis-acidification, which is characterized in that step is such as
Under:
(1) a certain amount of electron donor type bio-carrier is added into anaerobic reactor, the electron donor type bio-carrier be by
Electron donor substance and polyethylene base-material and auxiliary material are by being blended and Screw Extrusion technique is prepared；Electron donor type biology carries
Body dosage is no more than the 70% of reactor dischargeable capacity；
(2) anaerobic reactor is equipped with blender by the way of intaking from bottom to top in reactor, and water outlet is equipped with biology and carries
Body device for trapping；To guarantee sufficiently fluidizing and being uniformly distributed for carrier, water outlet is equipped with bio-carrier device for trapping to prevent from giving birth to
Object carrier is lost with water outlet；
(3) returned sludge is back to anaerobic reactor bottom from biochemical secondary settling tank, and reflux ratio maintains anaerobism anti-10% or more
It answers sludge concentration in device to be not less than 3000mg/L, is kept for residence time of the waste water in anaerobic reactor at 2 hours or more.
2. the method according to claim 1, wherein in the electron donor type bio-carrier constituent
Electron donor substance is solid-state, including Zero-valent Iron and zeroth order zinc, and auxiliary material is Polyquaternium-10 and talcum powder.
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| Application Number | Priority Date | Filing Date | Title |
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| CN201811099317.XA CN109250816A (en) | 2018-09-20 | 2018-09-20 | A method of based on electron donor type bio-carrier enhanced sewage anaerobic hydrolysis-acidification |
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| CN201811099317.XA CN109250816A (en) | 2018-09-20 | 2018-09-20 | A method of based on electron donor type bio-carrier enhanced sewage anaerobic hydrolysis-acidification |
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Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110304720A (en) * | 2019-06-17 | 2019-10-08 | 大连理工大学 | A kind of electron mediator type bio-carrier for anaerobic biochemical treatment |
| CN110803766A (en) * | 2019-11-05 | 2020-02-18 | 大连理工大学 | Synchronous nitrification and denitrification process combining nitrification functional type and denitrification functional type suspension carrier |
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| CN102120674A (en) * | 2011-01-25 | 2011-07-13 | 大连理工大学 | Zero-valent iron fortified anaerobic hydrolysis-acidification sewage treatment method |
| CN102120675A (en) * | 2011-01-25 | 2011-07-13 | 大连理工大学 | Zero-valent iron two-phase anaerobic reactor |
| CN103951140A (en) * | 2014-04-25 | 2014-07-30 | 大连理工大学 | Low concentration wastewater treatment technology adopting coupling of anaerobic built-in zero-valent iron reactor and constructed wetland |
| CN104891643A (en) * | 2015-05-15 | 2015-09-09 | 大连宇都环境技术材料有限公司 | Composite biocarrier for wastewater treatment |
| CN106565017A (en) * | 2015-12-24 | 2017-04-19 | 安徽华骐环保科技股份有限公司 | Bicirculating nitrogen and phosphorus removal wastewater treatment system and method |
| CN108117157A (en) * | 2016-11-29 | 2018-06-05 | 中国石油化工股份有限公司 | A kind of processing method of difficult degradation organic nitrogen-containing waste water |
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2018
- 2018-09-20 CN CN201811099317.XA patent/CN109250816A/en active Pending
Patent Citations (7)
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| CN102120674A (en) * | 2011-01-25 | 2011-07-13 | 大连理工大学 | Zero-valent iron fortified anaerobic hydrolysis-acidification sewage treatment method |
| CN102120675A (en) * | 2011-01-25 | 2011-07-13 | 大连理工大学 | Zero-valent iron two-phase anaerobic reactor |
| CN103951140A (en) * | 2014-04-25 | 2014-07-30 | 大连理工大学 | Low concentration wastewater treatment technology adopting coupling of anaerobic built-in zero-valent iron reactor and constructed wetland |
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| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110304720A (en) * | 2019-06-17 | 2019-10-08 | 大连理工大学 | A kind of electron mediator type bio-carrier for anaerobic biochemical treatment |
| CN110304720B (en) * | 2019-06-17 | 2021-08-10 | 大连理工大学 | Electronic mediator type biological carrier for anaerobic biochemical treatment |
| CN110803766A (en) * | 2019-11-05 | 2020-02-18 | 大连理工大学 | Synchronous nitrification and denitrification process combining nitrification functional type and denitrification functional type suspension carrier |
| CN110803766B (en) * | 2019-11-05 | 2021-05-11 | 大连理工大学 | Synchronous nitrification and denitrification process combining nitrification functional type and denitrification functional type suspension carrier |
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