CN109292973A - A kind of electric field-enhanced type anaerobic ammonium oxidation apparatus and technique - Google Patents
A kind of electric field-enhanced type anaerobic ammonium oxidation apparatus and technique Download PDFInfo
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- CN109292973A CN109292973A CN201811475431.8A CN201811475431A CN109292973A CN 109292973 A CN109292973 A CN 109292973A CN 201811475431 A CN201811475431 A CN 201811475431A CN 109292973 A CN109292973 A CN 109292973A
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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
- C02F3/00—Biological treatment of water, waste water, or sewage
- C02F3/28—Anaerobic digestion processes
- C02F3/286—Anaerobic digestion processes including two or more steps
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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
- C02F2101/00—Nature of the contaminant
- C02F2101/10—Inorganic compounds
- C02F2101/16—Nitrogen compounds, e.g. ammonia
-
- C—CHEMISTRY; METALLURGY
- C02—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
- C02F—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
- C02F2101/00—Nature of the contaminant
- C02F2101/10—Inorganic compounds
- C02F2101/16—Nitrogen compounds, e.g. ammonia
- C02F2101/163—Nitrates
Abstract
The invention discloses a kind of electric field-enhanced type anaerobic ammonium oxidation apparatus and technique, described device includes water inlet system, anaerobic ammonia oxidation reactor, two-stage biological filler and different setback plate denitrification reactor, denitrification liquid return-flow system, effluent weir and gas gathering system.The present invention is by electric field-enhanced anaerobic ammonia oxidation reactor in conjunction with two-stage denitrification reactor, utmostly play the degradation of microorganism, it is greatly lowered into Organic substance in water and nitrate content, realize being effectively treated for high ammonia nitrogen and high organic wastewater, small accommodation area, operating cost is low, high treating effect, has very high engineering application value.The present invention is combined by electrochemical techniques with biotechnology, realizes and has complementary advantages, to realize application of the new process in high ammonia-nitrogen wastewater processing.
Description
Technical field
The present invention relates to a kind of electric field-enhanced type anaerobic ammonium oxidation apparatus and techniques, belong to dirty water living creature processing technique neck
Domain.
Background technique
The water eutrophication problem due to caused by the transition discharge of the sewage such as nitrogen, phosphorus is to cause the weight of water environment pollution
One of big source, not only seriously threatens human health and safety, while causing irreversible shortage of water resources phenomenon, hinders significantly
The fast development of China's economy.With the continuous renewal of water treatment technology, sewage has been increasingly becoming except surface and ground water
Except one of the third-largest water source source.Sewage water treatment method mainly has physical method, bioanalysis and chemical method at present, wherein sewage
Biological treatment because high treating effect, at low cost and environmental benefit is high the features such as be widely used.Traditional biological nitration and anti-
Nitrification technology is the core of standard biologic denitrification process, and carbon source is often insufficient in general municipal sewage, and needing to add largely has
Machine carbon guarantees sufficient denitrification, this undoubtedly increases operating cost；In addition, organic matter add also add carbon dioxide,
The discharge of methane and nitrous oxide isothermal chamber gas, considerably increases environmental risk.Therefore, it is necessary to research and develop economical and efficient,
Free of contamination sustainable bio-denitrification technology.Anammox technology is main to utilize as a kind of novel bio-denitrification technology
The effect of anaerobic ammonium oxidizing bacteria, by the NO in sewage2- 4 and NH+4, which is directly acted on, generates N2, without being added in reaction process
Machine carbon and O2, the greenhouse gases amount of generation greatly reduces.At present.The technique has been widely used for and ammonia nitrogen in high density and percolate
Biological wastewater treatment process.During Anammox realizes nitrite and mineralized nitrogen, a large amount of nitre state can be generated
Nitrogen, and Central Asia nitrate nitrogen content of intaking is very low, needs to be replenished in time.It can be converted nitrate nitrogen in view of denitrification reactor
Nitrite nitrogen, the reflux of denitrification reactor water part can make up the consumption problem of the nitrite of anaerobic ammonia oxidation reactor.
Meanwhile anaerobic ammonium oxidizing bacteria is autotroph, and it is very harsh to environmental requirement, anaerobism can be inhibited in the presence of large amount of organic
The growth and breeding of ammonia oxidation bacteria, are unfavorable for the stable operation of reactor.
Summary of the invention
The technical problem to be solved by the present invention is in view of the defects existing in the prior art, provide a kind of electric field-enhanced type to detest
Anaerobic ammonium oxidation device and technique.
In order to solve this technical problem, the present invention provides a kind of electric field-enhanced type anaerobic ammonium oxidation apparatus, including water inlet
System, anaerobic ammonia oxidation reactor, two-stage biological filler and different setback plate denitrification reactor, go out denitrification liquid return-flow system
Mill weir and gas gathering system, the water inlet system include raw water box, intake pump and sludge discharge system, are equipped with temperature in raw water box
Controller and pH controller are spent, temperature controller and pH controller are controlled respectively in inflow temperature and pH optimum range；It is described to detest
Carbon dioxide aerating system is arranged in the bottom of anaerobic ammonium oxidation reactor, and its exterior is equipped with electric fields, are internally provided with Anammox
Sludge, bottom are connect with water inlet system, and top is connect by three phase separator with top anaerobic reactor cylinder；The biology
Filler denitrification reactor and different setback plate denitrification reactor are arranged in the anaerobic reactor cylinder of top, the top anaerobism
Reactor shell top is equipped with effluent weir, and top is equipped with gas gathering system, and upper part passes through denitrification liquid return-flow system and detests
The connection of anaerobic ammonium oxidation reactor；High ammonia nitrogen and high organic matter in raw water box is entered in anaerobic ammonia oxidation reactor by intake pump,
Pass through CO2Aerating system and through electric field-enhanced effect, microorganism mass propagation in anaerobic ammoxidation activity sludge, denitrification liquid
Return-flow system recirculation water is further mixed with water inlet, passes through biologic packing material denitrification reactor and different setback plate anti-nitration reaction
Device, complete nitrate conversion degradation, water outlet be discharged through effluent weir, the gas of generation through gas gathering system discharge system outside.
The electrode material that the electric field uses is one of graphene, metal organic frame, active carbon and carbon nanotube.
The angle of the different setback plate is 120~150 °, is processed using corrosion resistance steel or ABS plastic.
The intake pump is that Pulp pump or anticorrosive anti-wear pump.
The present invention also provides a kind of electric field-enhanced type Anammox oxidation technology, including following content,
1) raw water in raw water box is controlled temperature in 20~40 DEG C of ranges by temperature controller；It will by pH controller
PH value is controlled in 6.0~8.0 ranges；
2) sewage after adjusting squeezes into anaerobic ammonia oxidation reactor main body by intake pump；
3) carbon dioxide aerating system aeration intensity is 25~55L/H, and the electric field strength of electric field is 1.0~3.0V/cm, is led to
Cross CO2Aerating system and electric field action, microorganism mass propagation in anaerobic ammoxidation activity sludge；
4) recirculation water containing nitrite that water inlet flows back with top biologic packing material denitrification reactor mixes, and passes through anaerobism
The effect of ammoxidation sludge is converted into nitrogen and nitrate, and nitrogen is with the carbon dioxide gas being filled with after three phase separator separates
Outside discharge system.
5) water outlet reacted enters biologic packing material denitrification reactor and different setback plate denitrification reactor further progress
The denitrification reaction of nitrite completes the conversion degradation of nitrate；
6) final outflow water is discharged through effluent weir, and the gas of generation is recycled through gas gathering system 16.
In the anaerobic ammonia oxidation reactor sludge retention time be 20~45d, hydraulic detention time HRT be 0.4~
0.8d。
The reflux ratio of the denitrification liquid return-flow system is 1/3~2/3.
The biologic packing material denitrification reactor and different setback plate denitrification reactor total waterpower time is 3~6h.
The ratio between NH+4-N:NO2-N:COD control of intaking is 1:(1~1:5): (1~1.22), the control of volume elimination capacity are
1.5~8.5kgN/ (m3d).
The utility model has the advantages that the present invention by electric field-enhanced anaerobic ammonia oxidation reactor in conjunction with two-stage denitrification reactor,
Utmostly play microorganism degradation, be greatly lowered into Organic substance in water and nitrate content, realize high ammonia nitrogen and
High organic wastewater is effectively treated, and small accommodation area, operating cost is low, high treating effect, and there is very high engineering to apply
Value.The present invention is combined by electrochemical techniques with biotechnology, realizes and has complementary advantages, to realize new process in high ammonia nitrogen
Application in wastewater treatment.
Detailed description of the invention
Fig. 1 is the structural diagram of the present invention.
In figure: 1 raw water box, 2 temperature controllers, 3pH controller, 4 intake pumps, 5 sludge discharge systems, 6CO2Aeration system
System, 7 anaerobic ammonia oxidation reactors, 8 anaerobic ammoxidation activity sludge, 9 electric fields, 10 three phase separators, 11 biologic packing material denitrifications
Reactor, 12 different setback plate denitrification reactors, 13 denitrification liquid return-flow systems, 14 top anaerobic reactor cylinders, 15 water outlets
Weir, 16 gas gathering systems.
Specific embodiment
The present invention will now be described in detail with reference to the accompanying drawings and examples.
Fig. 1 show structural schematic diagram of the invention.
The present invention provides a kind of electric field-enhanced type anaerobic ammonium oxidation apparatus, including water inlet system, Anammox to react
Device 7, two-stage biological filler 11 and different setback plate denitrification reactor 12, denitrification liquid return-flow system 13, effluent weir 15 and gas
Collection system 16.
The water inlet system includes raw water box 1, intake pump 4 and sludge discharge system 5, is equipped with temperature in raw water box 1 and controls
Device 2 and pH controller 3, temperature controller 2 and pH controller 3 are controlled respectively in inflow temperature and pH optimum range, are to improve
The treatment effeciency of system.
Carbon dioxide aerating system 6 is arranged in the bottom of the anaerobic ammonia oxidation reactor 7, by being filled with carbon dioxide, with
The anaerobic environment for maintaining anaerobic reactor, improves the reproduction speed of anaerobic ammonium oxidizing bacteria.
The outside of the anaerobic ammonia oxidation reactor 7 is equipped with electric field 9, by introducing electric field, improves anaerobism in activated sludge
The reproduction speed of ammonia oxidizing bacteria enhances the starting time of system, improves the water quality adaptability of main body ammonia oxidizing bacteria.
The inside of the anaerobic ammonia oxidation reactor 7 is equipped with anaerobic ammonium oxidation sludge 8, and bottom is connect with water inlet system,
Top is connect by three phase separator 10 with top anaerobic reactor cylinder 14.
The biologic packing material denitrification reactor 11 and different setback plate denitrification reactor 12 are arranged in top anaerobic reaction
In device cylinder 14,14 top of top anaerobic reactor cylinder is equipped with effluent weir 15, and top is equipped with gas gathering system, thereon
Portion is connect by denitrification liquid return-flow system 13 with anaerobic ammonia oxidation reactor 7.
The electrode material that the electric field 9 uses is one in graphene, metal organic frame, active carbon and carbon nanotube
Kind.
The angle of the different setback plate is 120~150 °, is processed using corrosion resistance steel or ABS plastic.
The intake pump 4 is that Pulp pump or anticorrosive anti-wear pump.
The electric field-enhanced type Anammox oxidation technology of the present invention includes following content:
1) raw water in raw water box 1 is controlled temperature in 20~40 DEG C of ranges by temperature controller；Pass through pH controller
PH value is controlled in 6.0~8.0 ranges；
2) sewage after adjusting squeezes into 7 main body of anaerobic ammonia oxidation reactor by intake pump 4, and water inlet is with denitrification reflux
13 phegmas of uniting mixing；
3) 6 aeration intensity of carbon dioxide aerating system is 25~55L/H, and 9 electric field strength of electric field is 1.0~3.0V/cm；Detest
Anaerobic ammoxidation activity sludge 8 in anaerobic ammonium oxidation reactor 7 passes through CO2Aerating system and electric field action, Anammox are living
Property sludge 8 in microorganism mass propagation, create good living environment for ammonia oxidizing bacteria, promote anaerobic ammonium oxidizing bacteria degradation
Ammonia nitrogen and organic matter in sewage；
4) water inlet is converted into nitrogen and nitrate, nitrogen by the effect of anaerobic ammonium oxidation sludge 8 with reflux water mixed liquid
With the carbon dioxide gas that is filled with after the separation of three phase separator 10 outside discharge system.
5) water outlet reacted enters biologic packing material denitrification reactor 11 and different setback plate denitrification reactor 12 further
The denitrification reaction for carrying out nitrite, completes the conversion degradation of nitrate, and the gas of generation is returned by gas gathering system
It receives；
6) processing water up to standard is discharged through effluent weir 15, and the gas of generation is recycled through gas gathering system 16.
In the anaerobic ammonia oxidation reactor 7 sludge retention time be 20~45d, hydraulic detention time HRT be 0.4~
0.8d。
The reflux ratio of the denitrification liquid return-flow system 13 is 1/3~2/3.
The biologic packing material denitrification reactor 11 and different setback plate denitrification reactor 12 total waterpower time is 3~
6h。
The ratio between NH+4-N:NO2-N:COD control of intaking is 1:(1~1:5): (1~1.22), the control of volume elimination capacity are
1.5~8.5kgN/ (m3d).
Embodiment
Implementation condition and technique:
COD content is 350mg/L in water inlet, and the ratio between NH+4-N:NO2-N:COD control is 1:1.32:1.22, inflow temperature
It is 25 DEG C, pH 7.2, sludge retention time is 25d in anaerobic ammonia oxidation reactor, hydraulic detention time HRT is 0.6d, biology
Filler denitrification reactor 11 and different setback plate denitrification reactor 12 total waterpower time are 4h；Denitrification liquid return-flow system 13
Reflux ratio be 1/3.
Implementation process:
High ammonia nitrogen and high organic matter in raw water box 1 is entered in anaerobic ammonia oxidation reactor 7 by intake pump 4, passes through CO2It exposes
Gas system 6 controls CO2Aeration intensity is 35L/H, and controlling electric field strength through electric field 9 is 2.0V/cm, passes through anaerobic environment and electric field
Invigoration effect, microorganism mass propagation in anaerobic ammoxidation activity sludge 8, promote the degradation of dirty Organic substance in water and ammonia nitrogen with
Conversion.13 recirculation water of denitrification liquid return-flow system is further mixed with water inlet, nitrous acid needed for providing Anammox reaction
Salt, while generating a large amount of nitrate.Processing water containing nitrate further passes through 11 He of biologic packing material denitrification reactor
Different setback plate denitrification reactor 12 completes the conversion degradation of nitrate, and water outlet is discharged through effluent weir 15, the 1 gas warp of generation
Outside 16 discharge system of gas gathering system.
Implement data 1: electric field strength 0V/cm
| Project | Coloration | CODcr(mg/L) | Ammonia nitrogen (mg/L) | NO2-N(mg/L) |
| Water inlet | 95.2 | 351.7 | 463.5 | 427.9 |
| Water outlet | 11.3 | 47.8 | 88.6 | 59.8 |
| Removal rate % | 88.1 | 86.4 | 80.1 | 86.0 |
Implement data 2: other conditions are same as Example 1, electric field strength 2.0V/cm
| Project | Coloration | CODcr(mg/L) | Ammonia nitrogen (mg/L) | NO2-N(mg/L) |
| Water inlet | 95.4 | 350.3 | 462.5 | 427.4 |
| Water outlet | 3.4 | 7.9 | 32.6 | 5.4 |
| Removal rate % | 96.4 | 97.7 | 92.9 | 98.7 |
Implementation result:
High concentration raw water is after the processing of electric field-enhanced type anaerobic ammonium oxidation apparatus, 92% or more COD removal rate, ammonia nitrogen removal
95% or more rate.
The present invention in conjunction with two-stage denitrification reactor, is utmostly sent out by electric field-enhanced anaerobic ammonia oxidation reactor
The degradation for waving microorganism, is greatly lowered into Organic substance in water and nitrate content, realizes that high ammonia nitrogen and high organic matter are useless
Water is effectively treated, and small accommodation area, operating cost is low, high treating effect, has very high engineering application value.The present invention
It is combined by electrochemical techniques with biotechnology, realizes and have complementary advantages, to realize new process in high ammonia-nitrogen wastewater processing
Application.
The embodiment above of the present invention, is merely illustrative, be not it is only, it is all within the scope of the present invention or it is equivalent this
Change in the range of invention is surrounded by the present invention.
Claims (9)
1. a kind of electric field-enhanced type anaerobic ammonium oxidation apparatus, it is characterised in that: including water inlet system, anaerobic ammonia oxidation reactor
(7), two-stage biological filler (11) and different setback plate denitrification reactor (12), denitrification liquid return-flow system (13), effluent weir
(15) and gas gathering system (16), the water inlet system includes raw water box (1), intake pump (4) and sludge discharge system (5),
Temperature controller (2) and pH controller (3) are equipped in raw water box (1), temperature controller (2) and pH controller (3) control respectively
In inflow temperature and pH optimum range；Carbon dioxide aerating system (6) are arranged in the bottom of the anaerobic ammonia oxidation reactor (7),
Its exterior is equipped with electric field (9), are internally provided with anaerobic ammonium oxidation sludge (8), and bottom is connect with water inlet system, and top passes through three
Phase separator (10) is connect with top anaerobic reactor cylinder (14)；The biologic packing material denitrification reactor (11) and different setback
Plate denitrification reactor (12) setting is in top anaerobic reactor cylinder (14), on the top anaerobic reactor cylinder (14)
Portion is equipped with effluent weir (15), and top is equipped with gas gathering system, and upper part passes through denitrification liquid return-flow system (13) and anaerobism ammonia
Oxidation reactor (7) connection；High ammonia nitrogen and high organic matter in raw water box (1) is reacted by intake pump (4) into Anammox
In device (7), pass through CO2Aerating system () 6 and through electric field (9) invigoration effect, microorganism in anaerobic ammoxidation activity sludge (8)
Mass propagation, denitrification liquid return-flow system (13) recirculation water are further mixed with water inlet, pass through biologic packing material denitrification reactor
(11) it degrades with different setback plate denitrification reactor (12), the conversion for completing nitrate, water outlet is discharged through effluent weir (15), generates
Gas through gas gathering system (16) discharge system outside.
2. electric field-enhanced type anaerobic ammonium oxidation apparatus according to claim 1, it is characterised in that: the electric field (9) uses
Electrode material be one of graphene, metal organic frame, active carbon and carbon nanotube.
3. electric field-enhanced type anaerobic ammonium oxidation apparatus according to claim 1, it is characterised in that: the different setback plate
Angle is 120~150 °, is processed using corrosion resistance steel or ABS plastic.
4. electric field-enhanced type anaerobic ammonium oxidation apparatus according to claim 1,2 or 3, it is characterised in that: the water inlet
Pumping (4) is that Pulp pump or anticorrosive anti-wear pump.
5. a kind of oxidation technology using the described in any item electric field-enhanced type anaerobic ammonium oxidation apparatus of claim 1-4, special
Sign is, including following content:
1) raw water in raw water box 1 is controlled temperature in 20~40 DEG C of ranges by temperature controller；By pH controller by pH
Value control is in 6.0~8.0 ranges；
1) sewage after adjusting squeezes into anaerobic ammonia oxidation reactor (7) main body by intake pump (4)；
2) carbon dioxide aerating system (6) aeration intensity is 25~55L/H, and electric field (9) electric field strength is 1.0~3.0V/cm, is led to
Cross CO2Aerating system and electric field action, microorganism mass propagation in anaerobic ammoxidation activity sludge (8)；
3) recirculation water containing nitrite that water inlet flows back with top biologic packing material denitrification reactor (11) mixes, and passes through anaerobism
The effect of ammoxidation sludge (8) is converted into nitrogen and nitrate, and nitrogen and the carbon dioxide gas being filled with are through three phase separator
(10) after separating outside discharge system.
4) water outlet reacted enters biologic packing material denitrification reactor (11) and different setback plate denitrification reactor (12) is further
The denitrification reaction for carrying out nitrite completes the conversion degradation of nitrate；
5) final outflow water is discharged through effluent weir (15), and the gas of generation is recycled through gas gathering system (16).
6. oxidation technology according to claim 5, it is characterised in that: in the step 1) anaerobic ammonia oxidation reactor (7)
Sludge retention time is 20~45d, hydraulic detention time HRT is 0.4~0.8d.
7. oxidation technology according to claim 5, it is characterised in that: the denitrification liquid return-flow system (13) of the step 3)
Reflux ratio be 1/3~2/3.
8. oxidation technology according to claim 5, it is characterised in that: biologic packing material denitrification reactor in the step 4)
It (11) is 3~6h with different setback plate denitrification reactor (12) total waterpower time.
9. according to the described in any item oxidation technologies of claim 5-8, it is characterised in that: the ratio between water inlet NH+4-N:NO2-N:COD
Control is 1:(1~1:5): (1~1.22), the control of volume elimination capacity are 1.5~8.5kgN/ (m3d).
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN111484133A (en) * | 2020-05-06 | 2020-08-04 | 太原理工大学 | Reaction system and treatment method for enhancing micro-aerobic methane-producing granular sludge |
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| CN102336472A (en) * | 2011-09-08 | 2012-02-01 | 大连理工大学 | Electrically enhanced ANAMMOX biologic nitrogen removal method |
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