CN109160686A - A kind of sewage water treatment method based on energy resource recycling - Google Patents
A kind of sewage water treatment method based on energy resource recycling Download PDFInfo
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- CN109160686A CN109160686A CN201811146314.7A CN201811146314A CN109160686A CN 109160686 A CN109160686 A CN 109160686A CN 201811146314 A CN201811146314 A CN 201811146314A CN 109160686 A CN109160686 A CN 109160686A
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- 239000010865 sewage Substances 0.000 title claims abstract description 84
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 title claims abstract description 49
- 238000000034 method Methods 0.000 title claims abstract description 40
- 238000004064 recycling Methods 0.000 title claims abstract description 19
- 241000195493 Cryptophyta Species 0.000 claims abstract description 52
- IJGRMHOSHXDMSA-UHFFFAOYSA-N Atomic nitrogen Chemical compound N#N IJGRMHOSHXDMSA-UHFFFAOYSA-N 0.000 claims abstract description 38
- 238000006243 chemical reaction Methods 0.000 claims abstract description 23
- 239000012528 membrane Substances 0.000 claims abstract description 22
- 238000012545 processing Methods 0.000 claims abstract description 20
- 229910052757 nitrogen Inorganic materials 0.000 claims abstract description 19
- OAICVXFJPJFONN-UHFFFAOYSA-N Phosphorus Chemical compound [P] OAICVXFJPJFONN-UHFFFAOYSA-N 0.000 claims abstract description 18
- 230000029087 digestion Effects 0.000 claims abstract description 17
- CKMXBZGNNVIXHC-UHFFFAOYSA-L ammonium magnesium phosphate hexahydrate Chemical compound [NH4+].O.O.O.O.O.O.[Mg+2].[O-]P([O-])([O-])=O CKMXBZGNNVIXHC-UHFFFAOYSA-L 0.000 claims abstract description 16
- VNWKTOKETHGBQD-UHFFFAOYSA-N methane Chemical compound C VNWKTOKETHGBQD-UHFFFAOYSA-N 0.000 claims abstract description 16
- 229910052698 phosphorus Inorganic materials 0.000 claims abstract description 16
- 239000011574 phosphorus Substances 0.000 claims abstract description 16
- 239000000919 ceramic Substances 0.000 claims abstract description 13
- 238000012544 monitoring process Methods 0.000 claims abstract description 13
- 230000007613 environmental effect Effects 0.000 claims abstract description 12
- VHUUQVKOLVNVRT-UHFFFAOYSA-N Ammonium hydroxide Chemical compound [NH4+].[OH-] VHUUQVKOLVNVRT-UHFFFAOYSA-N 0.000 claims abstract description 9
- XKMRRTOUMJRJIA-UHFFFAOYSA-N ammonia nh3 Chemical compound N.N XKMRRTOUMJRJIA-UHFFFAOYSA-N 0.000 claims abstract description 9
- 239000000908 ammonium hydroxide Substances 0.000 claims abstract description 9
- 230000001079 digestive effect Effects 0.000 claims abstract description 8
- 230000000694 effects Effects 0.000 claims abstract description 8
- 235000011389 fruit/vegetable juice Nutrition 0.000 claims abstract description 8
- 239000007788 liquid Substances 0.000 claims abstract description 7
- 238000005842 biochemical reaction Methods 0.000 claims abstract description 6
- 239000003337 fertilizer Substances 0.000 claims abstract description 6
- 238000010992 reflux Methods 0.000 claims abstract description 3
- 239000007789 gas Substances 0.000 claims description 22
- 230000008569 process Effects 0.000 claims description 13
- 238000005286 illumination Methods 0.000 claims description 12
- 238000003756 stirring Methods 0.000 claims description 10
- 238000005276 aerator Methods 0.000 claims description 9
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- 239000000463 material Substances 0.000 claims description 8
- 238000005259 measurement Methods 0.000 claims description 8
- 238000000926 separation method Methods 0.000 claims description 7
- 238000010438 heat treatment Methods 0.000 claims description 5
- 238000004062 sedimentation Methods 0.000 claims description 5
- 239000002028 Biomass Substances 0.000 claims description 4
- 230000005791 algae growth Effects 0.000 claims description 4
- 238000007667 floating Methods 0.000 claims description 4
- 239000005416 organic matter Substances 0.000 claims description 4
- 230000029553 photosynthesis Effects 0.000 claims description 4
- 238000010672 photosynthesis Methods 0.000 claims description 4
- 238000004519 manufacturing process Methods 0.000 claims description 3
- 229910000030 sodium bicarbonate Inorganic materials 0.000 claims description 3
- UIIMBOGNXHQVGW-UHFFFAOYSA-M sodium bicarbonate Substances [Na+].OC([O-])=O UIIMBOGNXHQVGW-UHFFFAOYSA-M 0.000 claims description 3
- 230000002411 adverse Effects 0.000 claims description 2
- 238000004177 carbon cycle Methods 0.000 claims description 2
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- 230000019935 photoinhibition Effects 0.000 claims description 2
- 230000001105 regulatory effect Effects 0.000 claims description 2
- 239000013618 particulate matter Substances 0.000 claims 1
- 238000011084 recovery Methods 0.000 abstract description 3
- 239000000725 suspension Substances 0.000 abstract description 3
- 230000014075 nitrogen utilization Effects 0.000 abstract 1
- 230000008979 phosphorus utilization Effects 0.000 abstract 1
- 239000003344 environmental pollutant Substances 0.000 description 11
- 231100000719 pollutant Toxicity 0.000 description 11
- 230000012010 growth Effects 0.000 description 8
- 239000010802 sludge Substances 0.000 description 8
- OKTJSMMVPCPJKN-UHFFFAOYSA-N Carbon Chemical compound [C] OKTJSMMVPCPJKN-UHFFFAOYSA-N 0.000 description 7
- 230000008901 benefit Effects 0.000 description 7
- 229910052799 carbon Inorganic materials 0.000 description 7
- YUWBVKYVJWNVLE-UHFFFAOYSA-N [N].[P] Chemical compound [N].[P] YUWBVKYVJWNVLE-UHFFFAOYSA-N 0.000 description 6
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- 238000005273 aeration Methods 0.000 description 2
- QVGXLLKOCUKJST-UHFFFAOYSA-N atomic oxygen Chemical compound [O] QVGXLLKOCUKJST-UHFFFAOYSA-N 0.000 description 2
- 238000010276 construction Methods 0.000 description 2
- 229910052760 oxygen Inorganic materials 0.000 description 2
- 239000001301 oxygen Substances 0.000 description 2
- 238000011160 research Methods 0.000 description 2
- 239000013589 supplement Substances 0.000 description 2
- 239000002351 wastewater Substances 0.000 description 2
- 102000004190 Enzymes Human genes 0.000 description 1
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- 230000009471 action Effects 0.000 description 1
- 230000001651 autotrophic effect Effects 0.000 description 1
- 230000015572 biosynthetic process Effects 0.000 description 1
- 238000009395 breeding Methods 0.000 description 1
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- 230000015556 catabolic process Effects 0.000 description 1
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- 239000003153 chemical reaction reagent Substances 0.000 description 1
- 238000005352 clarification Methods 0.000 description 1
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- 238000006731 degradation reaction Methods 0.000 description 1
- 230000000593 degrading effect Effects 0.000 description 1
- 238000013461 design Methods 0.000 description 1
- 239000003814 drug Substances 0.000 description 1
- 239000008187 granular material Substances 0.000 description 1
- 239000010842 industrial wastewater Substances 0.000 description 1
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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
- C02F9/00—Multistage treatment of water, waste water or sewage
-
- C—CHEMISTRY; METALLURGY
- C01—INORGANIC CHEMISTRY
- C01B—NON-METALLIC ELEMENTS; COMPOUNDS THEREOF; METALLOIDS OR COMPOUNDS THEREOF NOT COVERED BY SUBCLASS C01C
- C01B25/00—Phosphorus; Compounds thereof
- C01B25/16—Oxyacids of phosphorus; Salts thereof
- C01B25/26—Phosphates
- C01B25/45—Phosphates containing plural metal, or metal and ammonium
- C01B25/451—Phosphates containing plural metal, or metal and ammonium containing metal and ammonium
-
- C—CHEMISTRY; METALLURGY
- C01—INORGANIC CHEMISTRY
- C01C—AMMONIA; CYANOGEN; COMPOUNDS THEREOF
- C01C1/00—Ammonia; Compounds thereof
- C01C1/02—Preparation, purification or separation of ammonia
- C01C1/022—Preparation of aqueous ammonia solutions, i.e. ammonia water
-
- C—CHEMISTRY; METALLURGY
- C02—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
- C02F—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
- C02F11/00—Treatment of sludge; Devices therefor
- C02F11/02—Biological treatment
- C02F11/04—Anaerobic treatment; Production of methane by such processes
-
- C—CHEMISTRY; METALLURGY
- C05—FERTILISERS; MANUFACTURE THEREOF
- C05F—ORGANIC FERTILISERS NOT COVERED BY SUBCLASSES C05B, C05C, e.g. FERTILISERS FROM WASTE OR REFUSE
- C05F9/00—Fertilisers from household or town refuse
- C05F9/04—Biological compost
-
- C—CHEMISTRY; METALLURGY
- C02—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
- C02F—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
- C02F1/00—Treatment of water, waste water, or sewage
- C02F1/44—Treatment of water, waste water, or sewage by dialysis, osmosis or reverse osmosis
-
- C—CHEMISTRY; METALLURGY
- C02—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
- C02F—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
- C02F1/00—Treatment of water, waste water, or sewage
- C02F1/66—Treatment of water, waste water, or sewage by neutralisation; pH adjustment
-
- C—CHEMISTRY; METALLURGY
- C02—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
- C02F—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
- C02F1/00—Treatment of water, waste water, or sewage
- C02F2001/007—Processes including a sedimentation step
-
- 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
- C02F2209/02—Temperature
-
- 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
- C02F2209/06—Controlling or monitoring parameters in water treatment pH
-
- 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
- C02F2301/08—Multistage treatments, e.g. repetition of the same process step under different conditions
-
- 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
- C02F3/02—Aerobic processes
-
- 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
- C02F3/32—Biological treatment of water, waste water, or sewage characterised by the animals or plants used, e.g. algae
- C02F3/322—Biological treatment of water, waste water, or sewage characterised by the animals or plants used, e.g. algae use of algae
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- 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
- Y02A—TECHNOLOGIES FOR ADAPTATION TO CLIMATE CHANGE
- Y02A40/00—Adaptation technologies in agriculture, forestry, livestock or agroalimentary production
- Y02A40/10—Adaptation technologies in agriculture, forestry, livestock or agroalimentary production in agriculture
- Y02A40/20—Fertilizers of biological origin, e.g. guano or fertilizers made from animal corpses
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- 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
-
- 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
- Y02P—CLIMATE CHANGE MITIGATION TECHNOLOGIES IN THE PRODUCTION OR PROCESSING OF GOODS
- Y02P20/00—Technologies relating to chemical industry
- Y02P20/10—Process efficiency
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- Molecular Biology (AREA)
- Hydrology & Water Resources (AREA)
- Water Supply & Treatment (AREA)
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- Oil, Petroleum & Natural Gas (AREA)
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- Chemical Kinetics & Catalysis (AREA)
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- Purification Treatments By Anaerobic Or Anaerobic And Aerobic Bacteria Or Animals (AREA)
Abstract
The present invention relates to a kind of sewage water treatment methods of energy resource recycling.A kind of sewage disposal system is provided, including pretreatment system, microalgae reaction tank, online environmental monitoring system, ceramic membrane algae water separating system and anaerobism resource recovering system, the method for carrying out sewage treatment using the sewage disposal system are as follows: sewage enters microalgae reaction tank after pretreatment, under the environmental condition of control, nitrogen, phosphorus and organic concentration in sewage are reduced by the biochemical reaction effect of microalgae；Algae water mixed liquid is separated through ceramic membrane algae water separating system, Chinese effluent up to standard, a small amount of suspension algae solution reflux, most of algae solution enters anaerobism resource recovering system after then handling by secondary concentration, it is reacted by anaerobic digestion, the methane of generation and remaining digestive juice are respectively by Biogas Generator Set, guanite recover and ammonia nitrogen recover output electric energy, fertilizer and ammonium hydroxide.The system good sewage processing effect, recovery of nitrogen and phosphorus utilization rate height is, it can be achieved that the energy resource of sewage treatment balances.
Description
Technical field
The invention belongs to technical field of sewage, and in particular to a kind of to remove the processing system of nitrogen phosphorus and side in sewage
Method, especially a kind of processing system and method suitable for general sanitary sewage.
Background technique
With Chinese society, economic fast development, quantity of wastewater effluent is continuously increased, and sewage treatment facility construction just becomes
The emphasis of environmental protection administration of government promotes work.It currently, is domestic dirty using activated sludge process as the traditional biological processing technique of representative
The prevailing technology of water process, but the drawbacks of its " can consume energy ", keeps sewage treatment construction investment and operating cost more high, system
The universal and covering of Yue Liao sewage treatment plant.
Traditional activated sludge system in the process of running, needs additionally to add material, supplement energy come sewage of degrading
In pollutant, be in particular in: (1) aeration, stirring operation of biochemical reaction section consume a large amount of electric energy, account for about entire treatment plant
The 60%~70% of power consumption；(2) the water inlet source of many industrial wastewaters is complicated, and water quality has differences, generally requires additionally to add
Medicament guarantees the efficient progress of biochemical reaction with regulating water quality, supplement basicity etc.；(3) final result of sewage treatment is organic
The degradation of the pollutants such as object, nitrogen, phosphorus, mineralising, resource are unable to get recycling；(4) at a large amount of excess sludges that technique generates
Reason disposition difficulty is big, and toxicity is high, can not resource utilization organic matter therein, and have the risk of secondary pollution to environment.
This " can consume energy " and there are the sewage water treatment methods of secondary pollution risk to cause sewage treatment very big to environment
Become the industry for not generating economic benefit, highly energy-consuming, low output directly in degree, it is difficult to adapt to sustainable development trend.
The algae sewage treatment proposed for this problem is a kind of sewage disposal technology with great potential, can effectively solve
The energy loss and resource reusing problem of sewage treatment.
As a kind of autotrophic type microorganism, algae can absorb the objects such as Water, phosphorus during own growth is bred
Pollutant concentration in water body is effectively reduced for vital metabolic activity in matter.It is different from activated sludge process, most of algae nutrition classes
Type is photosynthetic autotrophs, without separately adding carbon source；It is returned the characteristics of growth course needs nitrogen and phosphorus with the suitable energy in conjunction with algae
Receipts technology can make nitrogen and phosphorus of the algae during the growth process in fast enriching sewage, and further utilize to the resource of enrichment, have
There is great resource recovery potential.However, existing technical research rests on microalgae screening to the application of algae sewage treatment more
With the laboratory lab scale stage of cultivation, insufficient to the research application of algae enrichment resource, the comprehensive recycling for not being able to achieve energy is sharp
With there are still biggish development blank for operating system and treatment design for economization, technology.
Currently, anaerobic digestion techniques develop more mature recycling means as a kind of, in the pair of sewage disposal process
The processing of product sludge is applied.By the anaerobic digestion to sludge, it can be achieved that the release of biogas output and nitrogen phosphorus, and with
The forms such as guanite recycling, ammonium hydroxide recycling carry out the resource reclaim of nitrogen phosphorus.And algae is handled into sewage and anaerobic digestion techniques
The problem of combining, can solve by-product recovery in algae processing sewage, and realize that carbon in frond, nitrogen, the complete of phosphor resource return
The resources circulation and Energy output of utilization and process system are received, the energy consumption problem of sewage treatment is fundamentally solved.
Summary of the invention
The purpose of the invention is to overcome the problems, such as that existing sewage disposal technology high energy consumption, by-product are intractable, provide
A kind of processing system and processing method with microalgae processing sewage, the system are guaranteeing what the pollutant in sewage efficiently removed
Meanwhile realizing the recycling of the nutriments such as nitrogen, phosphorus, energy in sewage.
The technical solution that this system uses are as follows:
A kind of sewage water treatment method based on energy resource recycling, provides a kind of processing system for sewage treatment.Processing system
System includes pretreatment system, microalgae reaction tank, online environmental monitoring system, ceramic membrane algae water separating system, secondary concentration area, detests
Oxygen resource recovering system, guanite recover, Biogas Generator Set and ammonia nitrogen recover；Wherein, pretreatment system includes thick lattice
Grid, fine fack and primary sedimentation tank reduce the work of subsequent microalgae reaction tank for removing coarse floating material and partial suspended thing in sewage
Skill load；The processing of nitrogen, phosphorus, organic pollutant in culture and sewage of the microalgae reaction tank for microalgae；On-line environmental monitoring system
System includes illumination Monitor And Control Subsystem, monitoring temperature subsystem, pH Monitor And Control Subsystem, CO2It is aerated concentration measurement and control subsystem and PLC certainly
Operating system is controlled, for control environment condition needed for providing microalgae normal growth and vital movement；Ceramic membrane algae water segregative line
System is made of inorganic membrane assembly, for the retention and collection of microalgae, realizes clear water discharge；Secondary concentration area is anaerobism recycling system
The pretreatment of system, for improving microalgae concentration and adjusting moisture content；Anaerobism resource recovering system includes anaeroic digestor, temperature control
System, stirring system, gas gathering system and drainage system processed, the anaerobic digestion methane phase for microalgae react；Biogas Generator Set,
Guanite recover and ammonia nitrogen recover realize comprehensive recycling benefit of microalgae energy resource for producing electricl energy and recycling nitrogen phosphorus
With.
Further, illumination Monitor And Control Subsystem described in the illumination Monitor And Control Subsystem is using LED light as artificial light source
Micro algae growth provides suitable light quality；Intensity of illumination control promotes in 4000-8000lux, Light To Dark Ratio control in 6:18-18:6
Utilization of the microalgae photosynthesis to nutriment in sewage, while avoiding photoinhibition to the adverse effect of micro algae growth.Institute
State CO2Being aerated concentration measurement and control subsystem includes CO2Gas bomb, gas flowmeter, air inlet pipe and aerator, CO2In gas bomb
Gas by gas flowmeter control charge flow rate, aerator is delivered to by air inlet pipe, after aerator is spread by microalgae benefit
With；CO2Concentration measurement and control subsystem is aerated as needed by CO2Concentration control promotes the intracorporal carbon cycle of microalgae and life in 1-5%
Order metabolism；The monitoring temperature subsystem temperatures control is at 25 ± 3 DEG C；The pH Monitor And Control Subsystem pH control is in 7.0-
8.0, pH are adjusted using HCl and NaHCO3It carries out.
Further, the anaeroic digestor in the anaerobism resource recovering system is reacted for the anaerobic fermentation of microalgae, temperature
Degree control system makes the heating heating of anaeroic digestor inside, and stirring system is mixed to the material stirring in anaeroic digestor and sufficiently
It closes, gas gathering system collects the methane that anaerobic digestion generates and is delivered to Biogas Generator Set and generates electricity, and drainage system discharge is detested
Oxygen digestive juice is to guanite recover and ammonia nitrogen recover for producing guanite and high concentration ammonium hydroxide.
Further, the ceramic membrane algae water separating system is made of inorganic membrane assembly；Membrane module preferentially selects plate membrane,
Reduce the fouling membrane in treatment process.
Specific sewage water treatment method are as follows: after the preprocessed system of sewage removes coarse floating material and partial suspended thing,
The suitable illumination of environmental monitoring system On-line Control, Light To Dark Ratio, temperature, pH, CO2It is anti-by microalgae under the environmental condition of concentration
The biochemical reaction effect of Ying Chizhong algae reduces nitrogen, phosphorus and organic concentration in sewage；Algae water mixed liquid passes through ceramic membrane algae
After separator separation, reaches the Chinese effluent of the country-level A standard of surface water, collect resulting microalgae and then pass through secondary concentration
After processing meets water content requirement, thermophilic digestion reaction is carried out into anaerobism resource recovering system, the methane of generation passes through
Electric energy is produced by Biogas Generator Set after collection, the digestive juice for the rich Nitrogen-and Phosphorus-containing that anaerobic digestion reaction generates enters guanite recycling
Device and ammonia nitrogen recover recycle nitrogen phosphorus substance useful in digestive juice for producing slow-release fertilizer guanite and high concentration ammonium hydroxide,
It is sold as high value chemical products, generates considerable economic benefit.
Further, Biogas Generator Set produce electricity can meet first system leading portion operation needed for, extra electricity is incorporated to city
Utility grid generates electricity charge income；
Further, after the separation of ceramic membrane algae water separating system, a small amount of suspension algae solution is back to micro- algae water mixed liquid
Algae reaction tank is for maintaining biomass in reaction tank to balance；
Further, the partial digested liquid in anaerobism resource recovering system is back to system leading portion and original water inlet mixing
It is processed as pollutant to enter pretreatment system afterwards, eliminates influence of the secondary pollution to environment.
Compared with prior art, the invention has the following advantages:
1. good sewage processing effect of the present invention, the separation of algae water is high-efficient.Algae in microalgae reaction tank can absorb in sewage
Nitrogen, phosphorus, organic matter etc. reduce the pollutant concentration in sewage, and stable treatment effect is realized in standard water discharge discharge；In addition,
Algae water separation of the invention, as separator, is avoided organic film disadvantage easy to pollute, improved using inorganic ceramic membrane module
Separative efficiency reduces the cost of equipment replacement maintenance；Meanwhile the concentration of algae solution is remarkably improved by the concentration of film, just
In the progress of subsequent anaerobic digestion recycling.
2. the drawbacks of the present invention overcomes sewage treatment " can consume energy ", the operation advantage with " low power consuming, high production ".
When microalgae handles sewage, photosynthesis directly can be carried out as nutrient source using the pollutant in sewage, without additionally adding battalion
Feeding substance can mass propagation save reagent cost compared with traditional wastewater processing technique, operation energy consumption substantially reduces.This
Outside, under the premise of low power technology, stable system algae amount only need to be maintained, that is, may separate out extra algae and carry out anaerobic digestion
Recycle energy resources.The methane that anaerobic digestion generates, which can generate electricity, compensates the power consumption of sewage plant, and the extra electricity of output then can be supplied to
Urban distribution network.The supernatant of anaerobic digestion also recyclable guanite and ammonium hydroxide etc., " high energy consumption " of furtherization sewage treatment lack
It falls into as " high production capacity " advantage.
3. of the invention carbon in sewage, nitrogen, the phosphor resource of comprehensively realizing sufficiently is recycled and is recycled, and avoids processing
In the process to the secondary pollution of environment.It is different from traditional sewage disposal process by activated sludge process removal thinking of pollutant, this
System has carried out sufficient recycling for carbon, nitrogen, the phosphorus substance in sewage.In traditional handicraft, carbon, nitrogen are respectively through micro- life
The decomposition and denitrification of object are converted into CO2, nitrogen, part phosphorus is transferred in excess sludge, and the by-product of sewage treatment is dirty
Mud complicated component, resource is difficult to be efficiently used, and sludge is more toxic, and specification handles disposition is difficult；And in this system
Most of carbon, nitrogen and phosphorus element are then enriched with to internal by algae during handling sewage, and the separated algae ingredient come out is more simple
Single, resources loss amount is few, and by anaerobic digestion output guanite, high concentration ammonium hydroxide is gentle releases the multiple products such as fertilizer, realize carbon,
The recycling of nitrogen, phosphorus.Whole system passes in and out in addition to sewage without other pollutants, inherently the utilization of resources valence of lifting sewage
Value makes technique operation Non-energy-consumption, generates without secondary waste.
Detailed description of the invention
Fig. 1 show the flow chart of processing system processing sewage of the invention.
Specific embodiment
In conjunction with attached drawing 1, steps are as follows for sewage treatment of the invention and recycling:
(1) sewage is delivered to pretreatment unit by water inlet pipe, successively passes through coarse rack, fine fack and primary sedimentation tank, and removal is big
Granule foreign and partial suspended thing reduce certain load for subsequent biological treatment, and amount of inlet water is by the valve between pretreatment unit
Door is adjusted；
(2) sewage enters microalgae reaction tank, and under aerobic condition, the algae in pond absorbs nitrogen, phosphorus and part in sewage
Organic matter is converted into the structural material of itself, carries out vital movement and growth and breeding, while drops pollutant concentration in sewage
It is low；Using corresponding environmental monitoring system, temperature in microalgae reaction tank, illumination, pH, CO are controlled to adjust2The environment item such as concentration
In part to most suitable range, guarantee the growth conditions and sewage treating efficiency of algae；Wherein, light source uses LED light, light quality and light
The growth of strong suitable algae, intensity of illumination are controlled by illumination Monitor And Control Subsystem in 4000-8000lux, and Light To Dark Ratio is controlled 6:
18-18:6；Temperature is maintained at room temperature, is normally carried out vital movement convenient for algae, is controlled temperature by monitoring temperature subsystem
At 25 ± 3 DEG C；PH is controlled in neutral meta-alkalescence range, is conducive to the synthesis of algae relevant enzyme, is controlled by pH Monitor And Control Subsystem
PH is in 7.0-8.0, using HCl and NaHCO3It is adjusted；It is passed through the CO of suitable concentration2For promoting the photosynthesis of algae, mention
Effective biomass in the growth rate and pond body of high algae, passes through CO2Concentration measurement and control subsystem is aerated as needed by CO2Concentration
Control is in 1-5%, CO2Being aerated concentration measurement and control subsystem includes CO2Gas bomb, gas flowmeter, air inlet pipe and aerator, CO2
Gas in gas bomb controls charge flow rate by gas flowmeter, is delivered to aerator by air inlet pipe, spreads through aerator
It is utilized afterwards by microalgae；Each system is individually connected with microalgae reaction tank by pipeline, is controlled by the PLC automatic operation system integration, just
In operational administrative.
(3) after the processing of the biochemical action of microalgae reaction tank, algae water mixed liquid enters ceramic membrane algae water separation device, point
From obtained clarification and effluent qualified discharge, the algae solution of high concentration enters next stage concentration area, the suspension algae of a small amount of low concentration
Liquid in system by being back in microalgae reaction tank, for supplementing the algae density in pond, biomass needed for maintaining system processing；
The preferred plate membrane of ceramic film component reduces fouling membrane.
(4) high concentration algae solution enters anaerobism resource recovering system, anaerobism resource to after meeting moisture content by secondary concentration
Recovery system includes anaeroic digestor, temperature control system, stirring system, gas gathering system and drainage system, anaeroic digestor warp
Anaerobic digestion reaction is carried out after the heating of excess temperature control system, by stirring system to the material stirring in anaeroic digestor and sufficiently
Mixing, the interior methane gas generated of anaeroic digestor are delivered to Biogas Generator Set after gas gathering system is collected and produce electricl energy,
The digestive juice of generation by drainage system be expelled to guanite recover and ammonia nitrogen recover difference output guanite slow released fertilizer and
Ammonium hydroxide, a small amount of digestive juice are being realized as pollutant exteenal reflux to the pretreating zone of system front end and sewage mixing post-processing
While being worth fertilizer and chemical products output, the secondary pollution of system by-product is avoided.
(5) electricity needed for the electric energy that generation is set in system resource makeup can cover the illumination, temperature control and aeration of system leading portion,
Remaining extra electricity is incorporated to urban distribution network, realizes the comprehensive utilization and balance of energy.
Above is illustrating for one of present invention possible embodiments, which is not intended to limit this hair
Bright the scope of the patents, all equivalence enforcements or change without departing from carried out by the present invention, is intended to be limited solely by the invention patent range.
Claims (10)
1. a kind of sewage water treatment method based on energy resource recycling, which is characterized in that a domestic sewage processing system is provided, it is raw
Sewage disposal system living include pretreatment system, microalgae reaction tank, online environmental monitoring system, ceramic membrane algae water separating system,
Secondary concentration area, anaerobism resource recovering system, guanite recover, Biogas Generator Set and ammonia nitrogen recover；Handle sewage side
The process of method are as follows: after the preprocessed removal particulate matter of sewage, under the environmental condition of control, pass through microalgae in microalgae reaction tank
Biochemical reaction effect reduces nitrogen, phosphorus and organic concentration in sewage；Algae water mixed liquid is separated through ceramic membrane algae water separating system
Afterwards, clear water qualified discharge, algae solution then improve concentration by secondary concentration, enter anaerobism resource reclaim system after meeting water content requirement
System, reacts by anaerobic digestion, and the methane of generation and remaining digestive juice are respectively by Biogas Generator Set, guanite recover and ammonia
Nitrogen recover production electric energy, organic slow released fertilizer and high concentration ammonium hydroxide, the anaerobism resource recovering system inner part digestive juice pass through
Exteenal reflux to system front end pretreatment unit.
2. sewage water treatment method according to claim 1, which is characterized in that the online environmental monitoring system includes illumination
Monitor And Control Subsystem, monitoring temperature subsystem, pH Monitor And Control Subsystem, CO2It is aerated concentration measurement and control subsystem and PLC automatic operation system
System, each system are individually connected by pipeline with microalgae reaction tank, are controlled by the PLC automatic operation system integration；It is described in thread environment
Monitoring system provides suitable environmental condition for the normal biochemical reaction of microalgae, promotes microalgae to nitrogen in sewage, phosphorus, organic matter
Removal.
3. sewage water treatment method according to claim 1, which is characterized in that the pretreatment system includes coarse rack, thin
Grid and primary sedimentation tank reduce the technical load of microalgae reaction tank for removing coarse floating material and partial suspended thing in sewage；Slightly
Grid connect by sewage conduct with fine fack, and fine fack passes through sewage conduct and connect with primary sedimentation tank, coarse rack and fine fack it
Between and fine fack and primary sedimentation tank between be equipped with valve for control and regulating pondage.
4. sewage water treatment method according to claim 1, which is characterized in that the ceramic membrane algae water separating system is by inorganic
Membrane module is constituted, and for the retention and separation of part microalgae, realizes that clear water discharge is collected with microalgae；Membrane module preferentially selects plate
Film reduces the fouling membrane in treatment process.
5. sewage water treatment method according to claim 1, which is characterized in that the anaerobism resource recovering system includes anaerobism
Digester, temperature control system, stirring system, gas gathering system and drainage system, anaeroic digestor are used for the anaerobic fermentation of microalgae
Reaction, temperature control system make heating heating inside anaeroic digestor, stirring system in anaeroic digestor material stirring and
It is sufficiently mixed, gas gathering system collects the methane that anaerobic digestion generates and is delivered to Biogas Generator Set and generates electricity, drainage system
Discharge anaerobic digestion solution is to guanite recover and ammonia nitrogen recover for producing guanite and high concentration ammonium hydroxide.
6. sewage water treatment method according to claim 2, which is characterized in that the illumination Monitor And Control Subsystem uses LED light
As artificial light source, suitable light quality is provided for micro algae growth；Intensity of illumination control exists in 4000-8000lux, Light To Dark Ratio control
6:18-18:6 promotes utilization of the microalgae photosynthesis to nutriment in sewage, while avoiding photoinhibition to micro algae growth
Adverse effect.
7. sewage water treatment method according to claim 2, which is characterized in that the CO2Being aerated concentration measurement and control subsystem includes
CO2Gas bomb, gas flowmeter, air inlet pipe and aerator, CO2Gas in gas bomb by gas flowmeter control into
Throughput is delivered to aerator by air inlet pipe, is utilized after aerator is spread by microalgae；CO2It is aerated concentration measurement and control subsystem root
According to needing CO2Concentration control promotes the intracorporal carbon cycle of microalgae and vital metabolic effect in 1-5%.
8. sewage water treatment method according to claim 2, which is characterized in that the monitoring temperature subsystem temperatures control exists
25±3℃。
9. sewage water treatment method according to claim 2, which is characterized in that the pH Monitor And Control Subsystem pH control is in 7.0-
8.0, pH are adjusted using HCl and NaHCO3It carries out.
10. sewage water treatment method according to claim 1, which is characterized in that hanged on a small quantity in the algae water separation separator
Floating algae solution is back to microalgae reaction tank by interior, for maintaining biomass in reaction tank to balance.
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Application publication date: 20190108 |