CN106277309A - A kind of compound electrode biomembrane denitrogenation reactor - Google Patents
A kind of compound electrode biomembrane denitrogenation reactor Download PDFInfo
- Publication number
- CN106277309A CN106277309A CN201610837288.7A CN201610837288A CN106277309A CN 106277309 A CN106277309 A CN 106277309A CN 201610837288 A CN201610837288 A CN 201610837288A CN 106277309 A CN106277309 A CN 106277309A
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- reactor
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- negative electrode
- denitrification
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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
- C02F3/005—Combined electrochemical biological processes
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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
- C02F2203/00—Apparatus and plants for the biological treatment of water, waste water or sewage
- C02F2203/006—Apparatus and plants for the biological treatment of water, waste water or sewage details of construction, e.g. specially adapted seals, modules, connections
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- Chemical & Material Sciences (AREA)
- Microbiology (AREA)
- Organic Chemistry (AREA)
- Engineering & Computer Science (AREA)
- Environmental & Geological Engineering (AREA)
- Water Supply & Treatment (AREA)
- Hydrology & Water Resources (AREA)
- Biodiversity & Conservation Biology (AREA)
- Health & Medical Sciences (AREA)
- Chemical Kinetics & Catalysis (AREA)
- Electrochemistry (AREA)
- General Chemical & Material Sciences (AREA)
- Molecular Biology (AREA)
- Purification Treatments By Anaerobic Or Anaerobic And Aerobic Bacteria Or Animals (AREA)
- Water Treatment By Electricity Or Magnetism (AREA)
Abstract
A kind of compound electrode biomembrane denitrogenation reactor, nitrogenous effluent is pumped in reactor, hydrogen is produced under the effect of electrolysis, then under the effect of denitrification biofilm, utilize hydrogen, as electron donor, the nitrate nitrogen in waste water is carried out denitrification, the final nitrogen that produces escapes system, reaches the purpose of advanced nitrogen.Whole reactor increases microbial biomass, improves the nitric efficiency to actual high concentration nitrate nitrogen waste water.
Description
Technical field
The invention belongs to the field of environment protection equipment in water treatment field, be specifically related to a kind of compound electrode biomembrane denitrogenation
Reactor, can process low ratio of carbon to ammonium nitrogenous effluent, improves treatment effeciency.
Background technology
Fixed microorganism is a kind of life grown up on the basis of the autotrophic denitrification with hydrogen as electron donor
The water technology that thing combines with electrochemistry, under conditions of on a small quantity or not adding organic carbon source, it is possible to realizes nitrogen and portion
Divide organic removal.The two-dimensional electrode that this technique is mainly made up of negative electrode and two electrodes of anode, by taming and dociling at cathode surface
Changing biofilm, microorganism is finally secured to cathode surface and forms denitrification biofilm, is electrolysed water and produces under the effect of impressed current
Hydrogen, these hydrogen and electronics are captured by bioactive substance when through cathode surface, as electricity under the effect of enzyme
Sub-donor participates in the reduction reaction of nitrate, thus realizes denitrification denitrogenation.Part denitrifying bacterium is also had to utilize waste water
In Organic substance as electron donor, jointly nitrate nitrogen is reduced to nitrogen.
This process products is pollution-free, removal efficiency is high, flexible to operation, by complicated biology, electrochemical reaction process
Only can realize by simple current regulation control.But, this technique is only taken off by the denitrification biofilm on negative electrode
Nitrogen, its microbial biomass is few, and nitric efficiency is low, the most only rests on the place of the nitrate nitrogen waste water to low concentration (below 50mg/L)
Reason, such as the process to subsoil water, and the most rare to the denitrogenation processing of actual high concentration, the nitrate nitrogen waste water of difficult degradation,
Such as the process to percolate, there is no successful story at present.In order to improve the microbial biomass of cathode surface, there is people in two dimension
Improved on the basis of electrode, i.e. filler particles activated carbon between two-dimensional electrode, serve as the 3rd electrode, improve negative electrode
Surface area, thus improve the adhesion amount of microorganism.Although this three-diemsnional electrode technology of biological membrane improves microbial biomass, one
Determine to also improve in degree nitric efficiency, but the 3rd electrode activity charcoal increased the most preferably deposits and hardens, hinder anti-
Answer the flowing of air-liquid in device, thus affect reaction efficiency.Therefore, no matter it is two-dimensional electrode technology of biological membrane or three-diemsnional electrode
, all there are some problems in technology of biological membrane, how to be effectively improved the microbial biomass in Electrode-biofilm membrane reactor and nitric efficiency,
It is fixed microorganism development and the key point of application.
Summary of the invention
The present invention is directed to above-mentioned technical barrier, it is provided that a kind of compound electrode biomembrane denitrogenation reactor, by nitrogenous effluent
Pump in reactor, under the effect of electrolysis, produce hydrogen, then under the effect of denitrification biofilm, utilize hydrogen as electricity
Nitrate nitrogen in waste water is carried out denitrification by sub-donor, and the final nitrogen that produces escapes system, reaches the purpose of advanced nitrogen.Whole
Individual reactor increases microbial biomass, improves the nitric efficiency to actual high concentration nitrate nitrogen waste water.
Technical scheme
In order to realize above-mentioned technical purpose, the present invention devises a kind of compound electrode biomembrane denitrogenation reactor, and its feature exists
In: it includes water tank, intake pump, denitrification reactor, product water tank；
Water tank is connected with denitrification reactor, and equipped with intake pump on connecting line, the water side of denitrification reactor is connected with producing water tank,
Meanwhile, it is connected between the outlet pipeline of denitrification reactor and inlet pipeline and has reflux pump.
Further, described denitrification reactor is made up of negative electrode, anode, DC source and biologic packing material, wherein, and biologic packing material
It is placed between negative electrode and anode.
Further, described negative electrode is arranged along reactor wall, and negative electrode and anode are right at least provided with two, are alternately placed in reactor
In, the electrode spacing between negative electrode and anode is 5～20cm.
Further, described negative electrode material is netted, cellular metal or NACF, and anode material is graphite.
Further, described biologic packing material is hydrophilic elastic filler, and diameter is not more than electrode spacing.
Beneficial effect
A kind of compound electrode biomembrane denitrogenation reactor of present invention design, utilizes the hydrogen that electrolytic process produces as electronics
Donor, reduces or without additional organic carbon source, so that it may the difficult degradation nitrogenous effluent of low ratio of carbon to ammonium is carried out denitrogenation processing, its denitrogenation
Efficiency is high, not only greatly reduces cost, and solves a professional difficult problem for the nitrogenous effluent denitrogenation of low ratio of carbon to ammonium, has
Wide market prospect.
Accompanying drawing explanation
Accompanying drawing 1 is technique and the special purpose device annexation schematic diagram of the present invention.
Detailed description of the invention
Below in conjunction with the accompanying drawings and embodiment, the present invention is elaborated.
Embodiment
As shown in Figure 1, compound electrode biomembrane denitrogenation reactor, it mainly includes that water tank 1, intake pump 2, denitrogenation are anti-
Answer device 3, produce water tank 4；
Water tank 1 is connected with denitrification reactor 3, equipped with intake pump 2 on connecting line；The water side of denitrification reactor 3 and product water tank 4
Connect, meanwhile, be connected between the outlet pipeline of denitrification reactor 3 and inlet pipeline and have reflux pump 5.
Described denitrification reactor 3 is made up of negative electrode 6, anode 7, DC source 8 and biologic packing material 9, wherein, and biologic packing material 9
It is placed between negative electrode 6 and anode 7.
Described negative electrode 6 is arranged along reactor wall, and negative electrode 6 is right at least provided with two with anode 7, is alternately placed in reactor,
Electrode spacing between negative electrode 6 and anode 7 is 5～20cm.
Described negative electrode 6 material is netted, cellular metal or NACF, and anode material is graphite.
Described biologic packing material 9 is hydrophilic elastic filler, and diameter is not more than electrode spacing.
The process utilizing said apparatus process organic wastewater is as follows:
First, low ratio of carbon to ammonium (0.5～2), total nitrogen concentration nitrate nitrogen waste water between 50～200mg/L return with system water outlet
Enter reactor from bottom after flow liquid mixing.Wherein, this backflow has diluting effect to water inlet, improves nitric efficiency, Er Qieneng
By regulating the size of capacity of returns, the anaerobic environment that system maintenance is stable can be made.Water electrolysis is carried out under the effect of impressed current,
In water electrolysis process, control electric current density 0.4～1.4A/m2Between, negative electrode mainly produces hydrogen, in addition, also sends out
The reduction reaction of raw oxygen, produces hydroxyl；Mainly producing oxygen on anode, in addition, the carbon on anode graphite carbon-point will
Being also carried out oxidation reaction, generate carbon dioxide, carbon dioxide is soluble in water, is partially converted into carbonic acid, bicarbonate radical etc., and these produce
Thing and hydrogen all efficiently can be utilized by the microorganism in biomembrane.Meanwhile, carbonic acid, bicarbonate radical etc. are to biomembrane internal diffusion, right
PH in denilrification system plays certain cushioning effect.
Then, the hydrogen of above-mentioned generation and the nitrate nitrogen in waste water, under the effect of denitrifying microorganism, carry out anti-nitre
Change denitrification reaction, produce nitrogen effusion system.It should be noted that denitrifying microorganism is not only by cathode surface set
Biomembrane produces, and larger portion of derives from the biomembrane of set on biologic packing material, and the sludge concentration of whole system is higher, can
Reach 3～10g/L.
Claims (5)
1. a compound electrode biomembrane denitrogenation reactor, it is characterised in that: it includes water tank (1), intake pump (2), denitrogenation
Reactor (3) and product water tank (4)；
Water tank (1) is connected with denitrification reactor (3), equipped with intake pump (2) on connecting line, and the water side of denitrification reactor (3)
Being connected with producing water tank (4), being connected between outlet pipeline and the inlet pipeline of denitrification reactor (3) has reflux pump (5).
2. a kind of compound electrode biomembrane denitrogenation reactor as claimed in claim 1, it is characterised in that: described denitrification reaction
Device (3) includes negative electrode (6), anode (7), DC source (8) and biologic packing material (9), and wherein, biologic packing material (9) is placed in negative electrode (6)
And between anode (7).
3. a kind of compound electrode biomembrane denitrogenation reactor as claimed in claim 2, it is characterised in that: described negative electrode (6)
Arranging along denitrification reactor (3) inwall, negative electrode (6) is right at least provided with two with anode (7), is alternately placed in denitrification reactor (3),
Electrode spacing between negative electrode (6) and anode (7) is 5～20cm.
4. a kind of compound electrode biomembrane denitrogenation reactor as claimed in claim 2, it is characterised in that: described negative electrode (6)
Material is netted, cellular metal or NACF, and anode (7) material is graphite.
5. a kind of compound electrode biomembrane denitrogenation reactor as claimed in claim 2, it is characterised in that: described biologic packing material
(9) being hydrophilic elastic filler, diameter is not more than electrode spacing.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201610837288.7A CN106277309A (en) | 2016-09-21 | 2016-09-21 | A kind of compound electrode biomembrane denitrogenation reactor |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201610837288.7A CN106277309A (en) | 2016-09-21 | 2016-09-21 | A kind of compound electrode biomembrane denitrogenation reactor |
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| CN106277309A true CN106277309A (en) | 2017-01-04 |
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| CN201610837288.7A Withdrawn CN106277309A (en) | 2016-09-21 | 2016-09-21 | A kind of compound electrode biomembrane denitrogenation reactor |
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Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109502768A (en) * | 2019-01-14 | 2019-03-22 | 浙江海拓环境技术有限公司 | One kind being used for electroplating wastewater denitrification denitrogenation reactor |
| CN109516557A (en) * | 2018-11-16 | 2019-03-26 | 浙江工商大学 | A kind of double-fluidized-bed reactor of broad-area electrode microorganism and wastewater treatment method |
| CN110980925A (en) * | 2019-12-23 | 2020-04-10 | 上海鼎宏水族科技有限公司 | Fish tank hydrogen increasing, oxygen increasing and nitrate removing device |
| CN111777292A (en) * | 2019-12-30 | 2020-10-16 | 重庆大学 | AOA (argon oxygen decarburization) biomembrane treatment system and method for low-carbon-nitrogen-ratio kitchen waste fermentation wastewater |
Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102020342A (en) * | 2011-01-14 | 2011-04-20 | 南京大学 | Compound three-dimensional electrode reactor and application thereof in treatment of nitrogenous organic wastewater |
| CN203938525U (en) * | 2014-06-20 | 2014-11-12 | 湖北金润德环保技术有限公司 | A kind of electro-biometric film coupled water treatment unit |
| CN206156846U (en) * | 2016-09-21 | 2017-05-10 | 上海晶宇环境工程股份有限公司 | Combined type electrode biomembrane denitrification reactor |
-
2016
- 2016-09-21 CN CN201610837288.7A patent/CN106277309A/en not_active Withdrawn
Patent Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102020342A (en) * | 2011-01-14 | 2011-04-20 | 南京大学 | Compound three-dimensional electrode reactor and application thereof in treatment of nitrogenous organic wastewater |
| CN203938525U (en) * | 2014-06-20 | 2014-11-12 | 湖北金润德环保技术有限公司 | A kind of electro-biometric film coupled water treatment unit |
| CN206156846U (en) * | 2016-09-21 | 2017-05-10 | 上海晶宇环境工程股份有限公司 | Combined type electrode biomembrane denitrification reactor |
Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109516557A (en) * | 2018-11-16 | 2019-03-26 | 浙江工商大学 | A kind of double-fluidized-bed reactor of broad-area electrode microorganism and wastewater treatment method |
| CN109516557B (en) * | 2018-11-16 | 2021-09-21 | 浙江工商大学 | Large-area electrode microorganism double-fluidized bed reactor and wastewater treatment method |
| CN109502768A (en) * | 2019-01-14 | 2019-03-22 | 浙江海拓环境技术有限公司 | One kind being used for electroplating wastewater denitrification denitrogenation reactor |
| CN110980925A (en) * | 2019-12-23 | 2020-04-10 | 上海鼎宏水族科技有限公司 | Fish tank hydrogen increasing, oxygen increasing and nitrate removing device |
| CN111777292A (en) * | 2019-12-30 | 2020-10-16 | 重庆大学 | AOA (argon oxygen decarburization) biomembrane treatment system and method for low-carbon-nitrogen-ratio kitchen waste fermentation wastewater |
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Application publication date: 20170104 |