CN106430870B - A kind of system and method for strengthening excess sludge recycling - Google Patents

A kind of system and method for strengthening excess sludge recycling Download PDF

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CN106430870B
CN106430870B CN201610902865.6A CN201610902865A CN106430870B CN 106430870 B CN106430870 B CN 106430870B CN 201610902865 A CN201610902865 A CN 201610902865A CN 106430870 B CN106430870 B CN 106430870B
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excess sludge
biogas
microbial reaction
outlet
microorganism
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CN106430870A (en
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罗涛
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Shangchuan (beijing) Water Co Ltd
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Shangchuan (beijing) Water Co Ltd
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    • CCHEMISTRY; METALLURGY
    • C02TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
    • C02FTREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
    • C02F11/00Treatment of sludge; Devices therefor
    • C02F11/006Electrochemical treatment, e.g. electro-oxidation or electro-osmosis
    • CCHEMISTRY; METALLURGY
    • C02TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
    • C02FTREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
    • C02F11/00Treatment of sludge; Devices therefor
    • C02F11/02Biological treatment
    • C02F11/04Anaerobic treatment; Production of methane by such processes
    • YGENERAL 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
    • Y02TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
    • Y02EREDUCTION OF GREENHOUSE GAS [GHG] EMISSIONS, RELATED TO ENERGY GENERATION, TRANSMISSION OR DISTRIBUTION
    • Y02E50/00Technologies for the production of fuel of non-fossil origin
    • Y02E50/30Fuel from waste, e.g. synthetic alcohol or diesel

Abstract

The invention discloses a kind of system and methods for strengthening excess sludge recycling, the system includes hydrolysis acidification pool, microorganism electrolysis cell, microbial reaction pond, sedimentation basin, excess sludge generates muddy water mixed solution after entering the sour pond processing of hydrolysis, muddy water mixed solution enters microorganism electrolysis cell, processing obtains biogas, biogas slurry, and biogas slurry enters microbial reaction pond and handles to obtain N2O gas, reaction mixture, reaction mixture obtain precipitating water, concentration excess sludge through sedimentation basin precipitation process, wherein the N that the biogas and microbial reaction pond that microorganism electrolysis cell generates generate2O gas mixing obtains optimization biogas.After system and method processing of the invention, the biogas that excess sludge is handled is optimized, and the electric heating coproduction efficiency of biogas is improved.

Description

A kind of system and method for strengthening excess sludge recycling
Technical field
The present invention relates to technical field of sewage, more particularly to a kind of system for strengthening excess sludge recycling and side Method.
Background technique
Many sewage can be generated in daily life, production, the water for being discharged into a certain water body to reach sewage or reusing Matter requirement, it is necessary to it be purified, i.e., sewage is handled.
Activated sludge process is the most widely used method of Treating Municipal Sewage, and activated sludge process is a kind of aerobic life of sewage Object facture.Activated sludge process is that air is continuously passed through into waste water, through shape due to aerobic microorganism is bred after a certain period of time At sludge-like flocculate, inhabit the micropopulation based on zoogloea thereon, have very strong absorption and oxidation of organic compounds Ability.The method is continuously to be mixed under artificial aerobic condition to sewage and various micropopulations, forms activity Sludge, using the biological flocculation and precipitation, absorption and oxidation of activated sludge, to decompose the organic pollutant in removal sewage.
However, during Wastewater Treated by Activated Sludge Process sewage a large amount of by-product-residual active sludge can be generated, no The excess sludge that same sewage treatment plant generates, harmful substance contained therein are not quite similar at branch, for example, processing life is dirty In the excess sludge that the sewage treatment plant of water generates in addition to containing bacterium, microorganism, helminth, suspended material and colloidal substance it Outside, also containing some nitrogen, phosphorus etc.;Industrial Waste Water Treatments factory can also have other than containing above-mentioned described some substances containing some The harmful heavy metal of poison and harmful chemical etc..If excess sludge without timely handling, is stacked, sludge meeting for a long time It is digested, generates a large amount of biogas, still, some sludge itself can distribute poison gas and foul smell, and the biogas quality generated is caused to be disliked Bad, even if methane recovery is utilized, biogas electric heating coproduction efficiency is also very low.
Therefore, how to improve excess sludge processing method, the quality of biogas is generated in optimization excess sludge processing, is ability Field technique personnel's urgent problem to be solved.
Summary of the invention
The object of the present invention is to provide a kind of system and methods for strengthening excess sludge recycling, to solve above-mentioned existing skill Art there are the problem of, the biogas for handling excess sludge is optimized, and the electric heating coproduction efficiency of biogas is improved.
To achieve the above object, the present invention provides following schemes:
The present invention provides a kind of system for strengthening excess sludge recycling, including hydrolysis acidification pool, microorganism electrolysis cell, micro- Biological reaction pool, sedimentation basin, the hydrolysis acidification pool are equipped with sludge inlet and sludge outlet, and the hydrolysis acidification pool passes through sludge Outlet is connected to the microorganism electrolysis cell, the microbial reaction pond respectively, and the microorganism electrolysis cell is equipped with electrolysis outlet And methane outlet, the microorganism electrolysis cell pass through microbial reaction pond described in electrolysis outlet, the microbial reaction pond Gentle body outlet is exported equipped with reaction, the microbial reaction pond is connected to by reacting outlet with the sedimentation basin, the gas Outlet is connected to the methane outlet, and the sedimentation basin is equipped with water outlet and refluxing opening, and the sedimentation basin is distinguished by refluxing opening It is connected to the microbial reaction pond and the sludge inlet.
The present invention also provides a kind of methods for strengthening excess sludge recycling, including following treatment process: hydrolysis acidification mistake Journey, microorganism electrolytic process, microbial reaction process, precipitation process;
The Hydrolysis Acidification accesses excess sludge, generates muddy water mixed solution after processing;
Muddy water mixed solution enters the microorganism electrolytic process, and processing obtains biogas, biogas slurry;
Biogas slurry enters the microbial reaction process and handles to obtain N2O gas, reaction mixture;
Reaction mixture handles to obtain precipitating water, concentration excess sludge through the precipitation process;
The N that the biogas and the microbial reaction process that the microorganism electrolytic process generates generate2O gas mixing obtains Optimize biogas.
Preferably, guanite is extracted from the precipitating water that the precipitation process generates, by reclamation of phosphorus resource.
Preferably, the muddy water mixed solution a part generated after hydrolysis acidification processing is electrolysed into the microorganism Process, processing obtain biogas, biogas slurry, and another enters microbial reaction process, the carbon source as microbial reaction process.
Preferably, the concentration excess sludge generated is handled by the precipitation process, a part flows back into the microorganism Reaction process, the thickened sludge of another part are discharged into the Hydrolysis Acidification.
Preferably, the hydraulic detention time of the Hydrolysis Acidification is 1-7 days, and operating temperature is 30-55 DEG C.
Preferably, the cathode electrode material in the microorganism electrolytic process is fe, and work applied voltage is 0.3- 0.8V。
Preferably, the sludge age of the microbial reaction process is 20-50 days, and dissolved oxygen concentration is less than 1.5mg/L.
Preferably, the hydraulic detention time of the precipitation process is 3-6 hours, reflux ratio 40%-80%.
The present invention achieves following technical effect compared with the existing technology:
After excess sludge is discharged into hydrolysis acidification pool using system and method for the present invention, most of macromolecule organic difficulty drop Solving hydrolysis of organic matter acidification is muddy water mixed solution addition microbial reaction pond conduct in part after degradable volatile organic acids Additional carbon, remaining muddy water mixed solution are discharged into microorganism electrolysis cell production biogas, and wherein microorganism electrolysis cell cathode material is Fe, after the biogas residue generated in microorganism electrolysis cell is exhausted, biogas slurry is discharged into microbial reaction pond, carries out production N2O gas Body is collected simultaneously the biogas of microorganism battery generation and the N in microbial reaction pond2O gas obtains optimization biogas, effectively improves natural pond The hot coproduction efficiency of pneumoelectric.
Detailed description of the invention
It in order to more clearly explain the embodiment of the invention or the technical proposal in the existing technology, below will be to institute in embodiment Attached drawing to be used is needed to be briefly described, it should be apparent that, the accompanying drawings in the following description is only some implementations of the invention Example, for those of ordinary skill in the art, without any creative labor, can also be according to these attached drawings Obtain other attached drawings.
Fig. 1 is the flow chart for strengthening excess sludge recycling system;
Wherein, 1 is hydrolysis acidification pool, and 101 be sludge inlet, and 102 be sludge outlet, and 2 be microorganism electrolysis cell, and 201 are Electrolysis outlet, 202 be methane outlet, and 3 be microbial reaction pond, and 301 be reaction outlet, and 302 be gas vent, and 4 be sedimentation basin, 401 be water outlet, and 402 be refluxing opening.
Specific embodiment
Following will be combined with the drawings in the embodiments of the present invention, and technical solution in the embodiment of the present invention carries out clear, complete Site preparation description, it is clear that described embodiments are only a part of the embodiments of the present invention, instead of all the embodiments.It is based on Embodiment in the present invention, it is obtained by those of ordinary skill in the art without making creative efforts every other Embodiment shall fall within the protection scope of the present invention.
The object of the present invention is to provide a kind of system and methods for strengthening excess sludge recycling, are deposited with solving the prior art The problem of, the biogas for handling excess sludge is optimized, and the electric heating coproduction efficiency of biogas is improved.
In order to make the foregoing objectives, features and advantages of the present invention clearer and more comprehensible, with reference to the accompanying drawing and specific real Applying mode, the present invention is described in further detail.
Referring to FIG. 1, Fig. 1 is the flow chart for strengthening excess sludge recycling system.
The present invention provide it is a kind of strengthen excess sludge recycling system, including hydrolysis acidification pool 1, microorganism electrolysis cell 2, Microbial reaction pond 3, sedimentation basin 4, hydrolysis acidification pool 1 are equipped with sludge inlet 101 and sludge outlet 102, and hydrolysis acidification pool 1 passes through Sludge outlet 101 is connected to microorganism electrolysis cell 2, microbial reaction pond 3 respectively, and microorganism electrolysis cell 2 is equipped with electrolysis outlet 201 With methane outlet 202, by 201 connection microbial reaction pond 3 of electrolysis outlet, microbial reaction pond 3 is equipped with microorganism electrolysis cell 2 Reaction outlet 301 and gas vent 302, microbial reaction pond 3 are connected to by reaction outlet 301 with sedimentation basin 4, gas vent 302 are connected to methane outlet 202, and sedimentation basin 4 is equipped with water outlet 401 and refluxing opening 402, and sedimentation basin 4 is distinguished by refluxing opening 402 It is connected to microbial reaction pond 3 and sludge inlet 101.
The method for strengthen using present system excess sludge recycling, includes the following steps:
Step 1: after excess sludge is discharged into hydrolysis acidification pool, most of macromolecule organic hardly degraded organic substance hydrolysis acid Turn to degradable volatile organic acids, wherein the hydraulic detention time of hydrolysis acidification pool is 1-7 days, and temperature is 30-55 DEG C;
Step 2: the muddy water mixed solution that hydrolysis acidification generates, a part of muddy water mixed solution enter in microorganism electrolysis cell, produce Raw biogas, biogas slurry, wherein cathode electrode material is fe, and work applied voltage is 0.3-0.8V;
Step 3: microbial reaction pond is added as additional carbon, in microorganism electrolysis cell in remainder muddy water mixed solution The biogas slurry of generation is discharged into microbial reaction pond, generates N2O gas produces N2The electron acceptor of O gas is from microbial reaction pond Additional carbon and microorganism electrolysis cell cathode material cation generated, wherein the sludge age in microbial reaction pond be 20- Dissolved oxygen concentration is less than 1.5mg/L within 50 days;
Step 4: the biogas of microorganism battery generation and the N in microbial reaction pond are collected simultaneously2O gas obtains optimization natural pond Gas, this optimization biogas improve 32% than general anaerobic sludge digestion biogas efficiency of fuel cell generation;
Step 5: the muddy water mixed solution in microbial reaction pond carries out mud-water separation after being discharged into sedimentation basin, after concentration Partial sludge flows back into microbial reaction pond, and remaining thickened sludge is drained into hydrolysis acidification pool in the form of excess sludge The above process is re-started, wherein the hydraulic detention time of sedimentation basin is 3-6 hours, return sludge ratio 40%-80%;
Step 6: guanite is extracted from the precipitating water of sedimentation basin, by reclamation of phosphorus resource.It extracts guanite and uses chemistry Reagent is MgCl2Solution adjusts molar ratio Mg2+:PO4 3-About 3:1, pH operating value are 9.5.
Case study on implementation one
Excess sludge takes to sewage treatment plant, Beijing, sludge quantity 200L, concentration 15000mg/L, according to following Several steps carry out excess sludge processing.
Step 1: after excess sludge is discharged into hydrolysis acidification pool, most of macromolecule organic hardly degraded organic substance hydrolysis acid After turning to degradable volatile organic acids, microbial reaction pond is added as external carbon in a part of part muddy water mixed solution Source, remaining muddy water mixed solution are discharged into microorganism electrolysis cell production biogas, and wherein hydrolysis acidification pool hydraulic detention time is 3 days, Temperature is 53 DEG C;
Step 2: after muddy water mixed solution is discharged into microorganism electrolysis cell, carrying out efficient real estate biogas, microorganism electrolysis cell Cathode electrode material is fe, and the applied voltage of microorganism electrolysis cell is 0.5V;
Step 3: by after the biogas residue removal in microorganism electrolysis cell, remaining biogas slurry is discharged into microbial reaction pond, carries out It is efficient to produce N2O gas produces N2The electron acceptor of O gas is electrolysed from the additional carbon in microbial reaction pond and microorganism Pool cathode material cation generated is collected simultaneously the biogas of microorganism electrolysis cell generation and the N in microbial reaction pond2O gas Body obtains optimization biogas, this optimization biogas improves 32% than general anaerobic sludge digestion biogas efficiency of fuel cell generation, wherein microorganism Reaction tank sludge age is 35 days, dissolved oxygen concentration 1.0mg/L;
Step 4: muddy water mixed solution carries out mud-water separation after being discharged into sedimentation basin in microbial reaction pond, by the portion after concentration Divide sludge reflux into microbial reaction pond, remaining thickened sludge is drained into hydrolysis acidification pool in the form of excess sludge, Sedimentation basin hydraulic detention time is 5 hours, return sludge ratio 50%;
Step 5: extracting guanite from sedimentation basin water outlet, recycle phosphor resource, extract chemical reagent that guanite uses for MgCl2Solution adjusts molar ratio Mg2+:PO4 3-About 3:1, pH operating value are 9.5.
Specific examples are applied in the present invention, and principle and implementation of the present invention are described, above embodiments Illustrate to be merely used to help understand method and its core concept of the invention;At the same time, for those skilled in the art, according to According to thought of the invention, there will be changes in the specific implementation manner and application range.In conclusion the content of the present specification It should not be construed as limiting the invention.

Claims (8)

1. a kind of system for strengthening excess sludge recycling, it is characterised in that: including hydrolysis acidification pool, microorganism electrolysis cell, micro- Biological reaction pool, sedimentation basin, the hydrolysis acidification pool are equipped with sludge inlet and sludge outlet, and the hydrolysis acidification pool passes through sludge Outlet is connected to the microorganism electrolysis cell, the microbial reaction pond respectively, and the microorganism electrolysis cell is equipped with electrolysis outlet And methane outlet, the microorganism electrolysis cell pass through microbial reaction pond described in electrolysis outlet, the microbial reaction pond Gentle body outlet is exported equipped with reaction, the microbial reaction pond is connected to by reacting outlet with the sedimentation basin, the gas Outlet is connected to the methane outlet, and the sedimentation basin is equipped with water outlet and refluxing opening, and the sedimentation basin is distinguished by refluxing opening It is connected to the microbial reaction pond and the sludge inlet;
When carrying out strengthening excess sludge recycling using the system of above-mentioned reinforcing excess sludge recycling, including process as follows Journey: Hydrolysis Acidification, microorganism electrolytic process, microbial reaction process, precipitation process;
The Hydrolysis Acidification accesses excess sludge, generates muddy water mixed solution after processing;
Muddy water mixed solution enters the microorganism electrolytic process, and processing obtains biogas, biogas slurry;
Biogas slurry enters the microbial reaction process and handles to obtain N2O gas, reaction mixture;
Reaction mixture handles to obtain precipitating water, concentration excess sludge through the precipitation process;
The N that the biogas and the microbial reaction process that the microorganism electrolytic process generates generate2O gas mixing is optimized Biogas.
2. the system according to claim 1 for strengthening excess sludge recycling, it is characterised in that: produced from the precipitation process Guanite is extracted in raw precipitating water, by reclamation of phosphorus resource.
3. the system according to claim 1 for strengthening excess sludge recycling, it is characterised in that: pass through the hydrolysis acidification The muddy water mixed solution a part generated after processing enters the microorganism electrolytic process, and processing obtains biogas, biogas slurry, another portion into Bioprocesses in a subtle way, the carbon source as microbial reaction process.
4. the system according to claim 3 for strengthening excess sludge recycling, it is characterised in that: pass through the precipitation process The concentration excess sludge generated is handled, a part flows back into the microbial reaction process, and the thickened sludge of another part is discharged into The Hydrolysis Acidification.
5. the system according to claim 1 for strengthening excess sludge recycling, it is characterised in that: the Hydrolysis Acidification Hydraulic detention time be 1-7 days, operating temperature be 30-55 DEG C.
6. the system according to claim 1 for strengthening excess sludge recycling, it is characterised in that: the microorganism was electrolysed Cathode electrode material in journey is fe, and work applied voltage is 0.3-0.8V.
7. the system according to claim 1 for strengthening excess sludge recycling, it is characterised in that: the microbial reaction mistake The sludge age of journey is 20-50 days, and dissolved oxygen concentration is less than 1.5mg/L.
8. the system according to claim 1 for strengthening excess sludge recycling, it is characterised in that: the water of the precipitation process The power residence time is 3-6 hours, reflux ratio 40%-80%.
CN201610902865.6A 2016-10-17 2016-10-17 A kind of system and method for strengthening excess sludge recycling Active CN106430870B (en)

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* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN108862969A (en) * 2018-08-27 2018-11-23 江苏方洋水务有限公司 A kind of sewage treatment process of activated sludge process excess sludge reduction
CN111087071B (en) * 2019-12-25 2022-02-25 北京林业大学 Microbial electrochemical device and method for efficiently generating and recovering nitrous oxide from nitrogen-containing wastewater

Citations (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN101905946A (en) * 2010-08-30 2010-12-08 哈尔滨工业大学 Three-stage methane preparation device and method by utilizing surplus sludge
CN102286537A (en) * 2011-06-20 2011-12-21 中国科学院广州能源研究所 Two-step biological hydrogen production method by using organic waste and device thereof
CN204661490U (en) * 2015-03-09 2015-09-23 浙江大学 A kind of integral system of Driven by Solar Energy microorganism electrolysis cell intensive treatment domestic sewage in rural areas
CN105541059A (en) * 2015-12-08 2016-05-04 东北大学 Device and method for degrading excess sludge through pretreatment-EGSB-microorganism-electrochemistry integration
CN105621826A (en) * 2016-01-19 2016-06-01 辽宁大学 Method for promoting anaerobic digestion of residual activated sludge to generate methane by pretreatment combined electrochemical technology

Patent Citations (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN101905946A (en) * 2010-08-30 2010-12-08 哈尔滨工业大学 Three-stage methane preparation device and method by utilizing surplus sludge
CN102286537A (en) * 2011-06-20 2011-12-21 中国科学院广州能源研究所 Two-step biological hydrogen production method by using organic waste and device thereof
CN204661490U (en) * 2015-03-09 2015-09-23 浙江大学 A kind of integral system of Driven by Solar Energy microorganism electrolysis cell intensive treatment domestic sewage in rural areas
CN105541059A (en) * 2015-12-08 2016-05-04 东北大学 Device and method for degrading excess sludge through pretreatment-EGSB-microorganism-electrochemistry integration
CN105621826A (en) * 2016-01-19 2016-06-01 辽宁大学 Method for promoting anaerobic digestion of residual activated sludge to generate methane by pretreatment combined electrochemical technology

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