CN107416977A - A kind of biogas slurry treatment method - Google Patents
A kind of biogas slurry treatment method Download PDFInfo
- Publication number
- CN107416977A CN107416977A CN201710827246.XA CN201710827246A CN107416977A CN 107416977 A CN107416977 A CN 107416977A CN 201710827246 A CN201710827246 A CN 201710827246A CN 107416977 A CN107416977 A CN 107416977A
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- Prior art keywords
- biogas slurry
- reaction
- biogas
- treatment method
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Classifications
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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
- C02F3/30—Aerobic and anaerobic processes
- C02F3/302—Nitrification and denitrification treatment
- C02F3/307—Nitrification and denitrification treatment characterised by direct conversion of nitrite to molecular nitrogen, e.g. by using the Anammox process
-
- 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
- C02F3/30—Aerobic and anaerobic processes
- C02F3/308—Biological phosphorus removal
-
- 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
- C02F3/34—Biological treatment of water, waste water, or sewage characterised by the microorganisms used
-
- 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
- C02F2101/105—Phosphorus compounds
-
- 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
- C02F2101/30—Organic compounds
-
- C—CHEMISTRY; METALLURGY
- C02—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
- C02F—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
- C02F2209/00—Controlling or monitoring parameters in water treatment
- C02F2209/08—Chemical Oxygen Demand [COD]; Biological Oxygen Demand [BOD]
-
- C—CHEMISTRY; METALLURGY
- C02—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
- C02F—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
- C02F2301/00—General aspects of water treatment
- C02F2301/04—Flow arrangements
- C02F2301/046—Recirculation with an external loop
-
- 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
- Y02E—REDUCTION OF GREENHOUSE GAS [GHG] EMISSIONS, RELATED TO ENERGY GENERATION, TRANSMISSION OR DISTRIBUTION
- Y02E50/00—Technologies for the production of fuel of non-fossil origin
- Y02E50/30—Fuel from waste, e.g. synthetic alcohol or diesel
Abstract
The invention discloses biogas slurry treatment method, as biogas slurry treatment field, including the following steps carried out successively：Depth anaerobic reaction, COD and degradation of organic substances in biogas slurry are removed, is formed methane simultaneously；Aerobic nitrification is reacted, and further removes the dissolved oxygen of the organic matter and increase biogas slurry in the biogas slurry by depth anaerobic reaction；Anammox reacts, biogas slurry removal of ammonia and nitrogen in this step after being handled through aerobic nitrification；Wherein, the NH in step b biogas slurries4 +Oxidation generation nitrite NO2 ‑, electron acceptor is provided for anaerobic ammonia oxidation process.Depth anaerobic reaction and aerobic nitration reaction are first carried out before the reaction of biogas slurry Anammox, depth anaerobic reaction can carry out further removing and increasing the utilization rate of organic matter to the COD in water, to reach requirement of the anaerobic ammonia oxidation process to water quality；In addition, the process combination of depth anaerobic reaction and aerobic nitration reaction with bind lines into an A/O, for continuing to remove the organic matter in sewage.
Description
Technical field
The present invention relates to biogas slurry treatment field, more particularly to a kind of biogas slurry treatment method.
Background technology
Maximum to environmental hazard in biogas slurry is NH3And the material such as PO, such as unprocessed discharge, these materials can do cyclization
The pollution of border water body.Have the technique handled using anaerobic ammonia oxidation process biogas slurry at present, however in biogas slurry COD generally compared with
Height, there is certain requirement in anaerobic ammonia oxidation process system to the COD of water quality, and in system ANAMMOX (red bacterium) propagation
It is also more sensitive to COD；The less COD considered how in reduction biogas slurry of current anaerobic ammonia oxidation process.
The content of the invention
In order to solve the above problems, the present invention provides a kind of biogas slurry treatment method that can rationally remove COD in biogas slurry.
The technical solution adopted in the present invention is：
A kind of biogas slurry treatment method, including the following steps carried out successively：
Depth anaerobic reaction, COD and degradation of organic substances in biogas slurry are removed, is formed methane simultaneously；
Aerobic nitrification is reacted, and the organic matter that further removal is passed through in the biogas slurry of depth anaerobic reaction is molten with increase biogas slurry
Solve oxygen；
Anammox reacts, biogas slurry removal of ammonia and nitrogen in this step after being handled through aerobic nitrification；
Wherein, the NH in step b biogas slurries4 +Oxidation generation nitrite NO2 -, for anaerobic ammonia oxidation process provide electronics by
Body.
As a further improvement on the present invention, arranged in aerobic nitrification reaction outside caused sludge part, be partly refluxed to depth
Degree detests reactions steps.
As a further improvement on the present invention, the mode of micro-pore aeration is utilized in step b to biogas slurry oxygenation.
As a further improvement on the present invention, polyP bacteria is launched in advance in the sludge of aerobic nitrification reaction, the phosphorus in biogas slurry
Hydrochlorate is gathered in the form of poly- phosphorus in polyP bacteria body, removes phosphate by the discharge of sludge afterwards.
As a further improvement on the present invention, thick biogas slurry first carries out separation of solid and liquid, and the biogas slurry after separation enters depth anaerobism
Reaction, the biogas residue after separation are arranged outside.
As a further improvement on the present invention, sludge, the depth anaerobic reaction of outer row caused by aerobic nitrification reaction produces
Sludge be mutually mixed with thick biogas slurry.
As a further improvement on the present invention, the liquid portion after being handled in step c is back to depth anaerobic reaction to make
For the dilution of biogas slurry.
As a further improvement on the present invention, biogas caused by depth anaerobic reaction is used as generating electricity, and biogas is set into generating
The standby processing of advance water-filling envelope and marsh gas purifying processing.
As a further improvement on the present invention, the ammonia nitrogen for adjusting thick biogas slurry is allowed to adapt to depth anaerobic reaction step.
The beneficial effects of the invention are as follows：The present invention first carries out depth anaerobic reaction before the reaction of biogas slurry Anammox and become reconciled
Oxygen nitration reaction, depth anaerobic reaction can carry out further removing and increasing the utilization rate of organic matter to the COD in water, with
Reach requirement of the anaerobic ammonia oxidation process to water quality；In addition, depth anaerobic reaction and aerobic nitration reaction and bind lines are into one
Individual A/O process combination, for dephosphorization and continues to remove the organic matter in sewage, and electronics is provided for the reaction of follow-up Anammox
Acceptor.
Brief description of the drawings
The present invention is further described with embodiment below in conjunction with the accompanying drawings.
Fig. 1 is the technological principle schematic diagram of the present invention；
Fig. 2 is the schematic diagram of device for implementing the present invention.
Embodiment
Biogas slurry treatment method as shown in Figure 1, including the following steps carried out successively：A. depth anaerobic reaction；B. anaerobism
Ammoxidation reaction；C. Anammox reacts.
Wherein, the thick biogas slurry by preliminary Anaerobic Treatment removes COD in biogas slurry and degraded in depth anaerobic reaction and had
Machine thing, forms methane simultaneously；
Then biogas slurry carry out aerobic nitrification reaction, further remove by depth anaerobic reaction biogas slurry in organic matter and
In the dissolved oxygen for increasing biogas slurry；
Biogas slurry carries out Anammox reaction, biogas slurry removal of ammonia and nitrogen in this step afterwards.
Implement above-mentioned method in embodiment using device described below.
Device as shown in Figure 2, including internal-circulation anaerobic reactor 1, aerobic nitrification reactor 2 and Anammox reaction
Device 3.
For wherein internal-circulation anaerobic reactor 1 to carry out depth anaerobic reaction, it is muti-level directory,
Claim IC anaerobic reactors, it has inlet, methane outlet, liquid outlet and liquid return hole, at the top of internal-circulation anaerobic reactor 1
It is additionally provided with three phase separator.Internal-circulation anaerobic reactor 1 is a kind of efficient multistage inner circulation reactor, traditional compared to original to detest
Oxygen reactor, it have take up an area less, organic loading is high, impact resistance is stronger, performance is more stable, operational administrative is simpler.When
When handling high concentrated organic wastewater when COD is 10000-15000mg/L, traditional general volumetric loading of anaerobic reactor is 5-
8kgCOD/m3；IC anaerobic reactor volumetric loading rates are up to 15-30kgCOD/m3。
Described aerobic nitrification reactor 2 is used to carry out aerobic nitrification reaction.The top of internal-circulation anaerobic reactor 1 goes out liquid
Mouth leads to the entrance of the bottom of aerobic nitrification reactor 2 by way of flow by gravity.
Described anaerobic ammonia oxidation reactor 3 is used to carry out Anammox reaction, and its inlet reacts with aerobic nitrification
The liquid outlet of device 2 communicates, to receive the biogas slurry after aerobic nitrification.The liquid outlet of anaerobic ammonia oxidation reactor 3 leads to transfer appearance
Device 10.
Above-mentioned internal-circulation anaerobic reactor 1 uses anaeration in normal temperature, biogas slurry after the processing of internal-circulation anaerobic reactor 1,
Biogas caused by anaerobic processes is discharged by the three phase separator gas collection area for being located at reactor head through pipeline, as follow-up work
Skill；
The dilute biogas slurry treated by depth anaerobic technique, aerobic nitrification reactor 2 is flowed under gravity.Inside follow
Ring anaerobic reactor 1 and aerobic nitrator 2 constitute A/O process combination, for dephosphorization and continue to remove sewage
In organic matter, provide electron acceptor for follow-up anaerobic ammonia oxidation process；
Biogas slurry after aerobic flows into anaerobic ammonia oxidation reactor 3, using anaerobic ammonia oxidation process to biogas slurry at
The advantages of reason, is in the case of without using biogas slurry carbon source to TN and NH3Removed.
It is further preferred that above-mentioned aerobic nitrification reactor 2 is provided with the mud discharging mouth positioned at bottom, aerobic nitrification reactor
2 mud discharging mouth passes to the sludge reflux mouth of internal-circulation anaerobic reactor 1 by pipeline and the reflux pump 4 being arranged on pipeline, from
And the caused outer row of a sludge part in aerobic nitrification reaction, another part, which is back to depth, detests reactions steps.
It is further preferred that setting aeration devices 21 in aerobic nitrification reactor 2, aeration devices 21 are located at bottom, Ke Yishi
The aeration tube of micropore is densely covered with, aeration tube is connected with the air compressor 22 of outside by pipeline, by way of micro-pore aeration
To biogas slurry oxygenation.
During upper be somebody's turn to do, biogas slurry sprays the oxygen in air with aeration tube and fully contacted, and oxygen is in aerobic nitrification device
Play a part of as follows：
1), to NH4 +Carry out oxidation generation nitrite NO2 -, electron acceptor is provided for anaerobic ammonia oxidation process；
2), aerobic nitrification reactor 2 forms the solid phosphorus techniques of A/O with internal-circulation anaerobic reactor 1；
3), effect of the oxygen in aerobic nitrification reactor 2 also includes further removing organic matter and the increase in sewage
The dissolved oxygen (DO) of sewage.
In addition, the combination of internal-circulation anaerobic reactor 1, anaerobic ammonia oxidation reactor 3 and aerobic nitrification reactor 2 can also
It is regarded as with A/O dephosphorization technology.
Can enter in the reactor in advance it is further preferred that containing polyP bacteria in the sludge of aerobic nitrification reactor 2
The sludge for having cultivated polyP bacteria, directly can also be thrown in reactor by row culture.Biogas slurry in aerobic nitrification reactor 2 is entered
After entering aerobic state, polyP bacteria is stored in internal PHB and carries out aerobic decomposition and discharge big energy, and these energy parts are for poly-
Phosphorus bacterium is rised in value, and is partly gathered as the phosphatic energy in its active absorption biogas slurry, phosphate in the form of poly- phosphorus in polyP bacteria
In vivo；Substantial amounts of polyP bacteria is included in aerobic sludge, may be reached by the discharge of sludge and remove phosphatic purpose.
It is further preferred that polyP bacteria is also contained by the sludge discharged in aerobic nitrification reactor 2, then in backflow
Under mode, it is back in the sludge of internal-circulation anaerobic reactor 1 and also contains polyP bacteria so that internal-circulation anaerobic reactor 1 also can
It is enough to realize the purpose for dragging phosphorus.
It is further preferred that device also includes solid-liquid separator 6, for first carrying out separation of solid and liquid, solid-liquid point to thick biogas slurry
The biogas slurry outlet for there is biogas residue outlet from device 6, leading to the suction inlet in biogas slurry pond 5 and lead to filtering pond 7.The solid-liquid separator 6 is
Spiral dewaterer, the charging aperture of the spiral dewaterer is connected in biogas slurry pond 5 as suction inlet by pipeline, in spiral dewaterer
Elevator pump 61 is set between biogas slurry pond 5, thick biogas slurry can be inputted and separation of solid and liquid is carried out into spiral dewaterer；Spiral is dehydrated
The discharging opening of machine forms biogas residue outlet, and biogas residue outlet with external pipe and can be led to and drying device (not shown), by solid-liquid
After separation, inorganic matter, fixed carbon in thick biogas slurry and the bulky grain organic matter not being hydrolyzed are trapped, and outer dispatch is toward organic fertilizer
Production technology is handled.The liquid outlet of spiral dewaterer forms biogas slurry outlet, and filtering pond 7 is led in biogas slurry outlet by pipeline
In, afterwards feed pump 71 by the biogas slurry in filtering pond 7 be promoted to internal-circulation anaerobic reactor 1 inlet carry out depth anaerobism it is anti-
Should.
It is further preferred that the bottom of internal-circulation anaerobic reactor 1 is also provided with mud discharging mouth, internal-circulation anaerobic reactor 1
The mud discharging mouth of mud discharging mouth and aerobic nitrification reactor 2 passes to the biogas slurry pond for adding original biogas slurry after being connected in parallel by pipeline
In 5.It is corresponding, corresponding valve is set on pipeline, and to control spoil disposal, while valve can also control aerobic nitrator 2
Spoil disposal is row into internal-circulation anaerobic reactor 1 or biogas slurry pond 5.Sludge, depth anaerobic reaction caused by aerobic nitrification reaction
Caused sludge and the latter same input of thick biogas slurry mixing carry out separation of solid and liquid into spiral dewaterer.
The lettuce inputted from cleaner liquid to internal-circulation anaerobic reactor 1 sometimes may be higher, and is unfavorable for detesting
Oxygen reacts, and is that this can be in the relatively low liquid of the other input concentration in the bottom of internal-circulation anaerobic reactor 1 (water etc.), to dilute natural pond
The concentration of liquid.
Specifically, internal-circulation anaerobic reactor 1 is provided with liquid return hole, and backflow is provided between transfer container 10 and liquid return hole
Equipment 8, the reclaimed water that refluxing unit 8 has handled anaerobic ammonia oxidation reactor 3 in processing procedure carries out reuse, as anaerobism ammonia oxygen
Change the dilution of biogas slurry in reaction, water is used so as to save.In addition, the reclaimed water in transfer container 10 is also used as long-term filling
The approach such as irrigate.
It is further preferred that the methane outlet of internal-circulation anaerobic reactor 1 is connected to by pipeline and generating (not shown) is set
It is standby so that biogas caused by depth anaerobic reaction is used as generating electricity, and the pipeline for connecting generating equipment and methane outlet is provided with resistance
Fiery water seal 9 and the purifying part that figure is not, to carrying out water seal processing and purified treatment.
It is further preferred that in order to strengthen the ammonia nitrogen removal efficiency of anaerobic ammonia oxidation reactor 3, filler is set in reactor
Bacterium bed as ANAMMOX (red bacterium).The principle of anaerobic ammonia oxidation process belongs to any technique commonly known, is in this embodiment
It is not described in detail.
In embodiment, initially entering the thick biogas slurry in biogas slurry pond 5 needs to carry out the regulation of ammonia nitrogen, so that follow-up depth anaerobism
Possess feasibility and adapt to depth anaerobic reaction.
The simply preferred embodiment of the present invention described above, it does not form limiting the scope of the invention.
Claims (9)
- A kind of 1. biogas slurry treatment method, it is characterised in that including the following steps carried out successively：A. depth anaerobic reaction, COD and degradation of organic substances in biogas slurry is removed, is formed methane simultaneously；B. aerobic nitrification is reacted, and further removes the dissolving of the organic matter and increase biogas slurry in the biogas slurry by depth anaerobic reaction Oxygen；C. Anammox reacts, biogas slurry removal of ammonia and nitrogen in this step after being handled through aerobic nitrification；Wherein, the NH in step b biogas slurries4 +Oxidation generation nitrite NO2 -, electron acceptor is provided for anaerobic ammonia oxidation process.
- 2. biogas slurry treatment method according to claim 1, it is characterised in that：Caused sludge part in aerobic nitrification reaction Outer row, it is partly refluxed to depth and detests reactions steps.
- 3. biogas slurry treatment method according to claim 2, it is characterised in that：The mode pair of micro-pore aeration is utilized in step b Biogas slurry oxygenation.
- 4. biogas slurry treatment method according to claim 3, it is characterised in that：Launched in advance in the sludge of aerobic nitrification reaction PolyP bacteria, the phosphate in biogas slurry is gathered in the form of poly- phosphorus removes phosphate in the discharge in polyP bacteria body, passing through sludge afterwards.
- 5. the biogas slurry treatment method according to Claims 2 or 3 or 4, it is characterised in that：Thick biogas slurry first carries out separation of solid and liquid, Biogas slurry after separation enters depth anaerobic reaction, is arranged outside the biogas residue after separation.
- 6. biogas slurry treatment method according to claim 5, it is characterised in that：The dirt of outer row caused by aerobic nitrification reaction Sludge is mutually mixed with thick biogas slurry caused by mud, depth anaerobic reaction.
- 7. according to the biogas slurry treatment method described in claim 1 or 2 or 3 or 4, it is characterised in that：Liquid after being handled in step c Depth anaerobic reaction is partly refluxed to using the dilution as biogas slurry.
- 8. according to the biogas slurry treatment method described in claim 1 or 2 or 3 or 4, it is characterised in that：Caused by depth anaerobic reaction Biogas is used as generating electricity, and biogas enters the processing of generating equipment advance water-filling envelope and marsh gas purifying processing.
- 9. according to the biogas slurry treatment method described in claim 1 or 2 or 3 or 4, it is characterised in that：Adjusting the ammonia nitrogen of thick biogas slurry makes Adaptation depth anaerobic reaction step.
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Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN108192839A (en) * | 2018-01-08 | 2018-06-22 | 东华理工大学 | The culture substrate and its cultural method of a kind of anaerobic ammonia oxidizing bacteria |
| CN110790378A (en) * | 2019-11-28 | 2020-02-14 | 恩格拜（武汉）生态科技有限公司 | Method for treating high-solid-content organic wastewater by anaerobic-aerobic deep coupling |
| CN113402025A (en) * | 2021-05-27 | 2021-09-17 | 广东富成环境科技有限公司 | Complete denitrification method for high-concentration organic matter and high-ammonia nitrogen wastewater |
| CN114560595A (en) * | 2022-03-01 | 2022-05-31 | 北京坦思环保科技有限公司 | Treatment method and treatment system for kitchen waste biogas slurry |
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| CN1626460A (en) * | 2003-12-09 | 2005-06-15 | 中国科学院成都生物研究所 | Bioreactor for treating wastewater |
| CN102503019A (en) * | 2011-10-12 | 2012-06-20 | 江南大学 | Method for realizing biogas slurry reutilization by recycling biogas slurry |
| CN105668739A (en) * | 2016-03-02 | 2016-06-15 | 北京农学院 | Biogas slurry treatment method |
| CN106186315A (en) * | 2016-07-10 | 2016-12-07 | 北京工业大学 | A kind of city domestic sewage flows the apparatus and method of AOA advanced nitrogen dephosphorization continuously |
| CN106957133A (en) * | 2017-04-19 | 2017-07-18 | 南昌航空大学 | A kind of processing method of biogas slurry |
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| CN1626460A (en) * | 2003-12-09 | 2005-06-15 | 中国科学院成都生物研究所 | Bioreactor for treating wastewater |
| CN102503019A (en) * | 2011-10-12 | 2012-06-20 | 江南大学 | Method for realizing biogas slurry reutilization by recycling biogas slurry |
| CN105668739A (en) * | 2016-03-02 | 2016-06-15 | 北京农学院 | Biogas slurry treatment method |
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Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN108192839A (en) * | 2018-01-08 | 2018-06-22 | 东华理工大学 | The culture substrate and its cultural method of a kind of anaerobic ammonia oxidizing bacteria |
| CN110790378A (en) * | 2019-11-28 | 2020-02-14 | 恩格拜（武汉）生态科技有限公司 | Method for treating high-solid-content organic wastewater by anaerobic-aerobic deep coupling |
| CN110790378B (en) * | 2019-11-28 | 2022-04-19 | 恩格拜（武汉）生态科技有限公司 | Method for treating high-solid-content organic wastewater by anaerobic-aerobic deep coupling |
| CN113402025A (en) * | 2021-05-27 | 2021-09-17 | 广东富成环境科技有限公司 | Complete denitrification method for high-concentration organic matter and high-ammonia nitrogen wastewater |
| CN114560595A (en) * | 2022-03-01 | 2022-05-31 | 北京坦思环保科技有限公司 | Treatment method and treatment system for kitchen waste biogas slurry |
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