CN105859057A - Method and system for extracting substances and energy from sewage - Google Patents
Method and system for extracting substances and energy from sewage Download PDFInfo
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- CN105859057A CN105859057A CN201610431231.7A CN201610431231A CN105859057A CN 105859057 A CN105859057 A CN 105859057A CN 201610431231 A CN201610431231 A CN 201610431231A CN 105859057 A CN105859057 A CN 105859057A
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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
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- 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
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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
- C02F11/00—Treatment of sludge; Devices therefor
- C02F11/12—Treatment of sludge; Devices therefor by de-watering, drying or thickening
-
- 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
- C02F11/18—Treatment of sludge; Devices therefor by thermal conditioning
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- C—CHEMISTRY; METALLURGY
- C05—FERTILISERS; MANUFACTURE THEREOF
- C05F—ORGANIC FERTILISERS NOT COVERED BY SUBCLASSES C05B, C05C, e.g. FERTILISERS FROM WASTE OR REFUSE
- C05F7/00—Fertilisers from waste water, sewage sludge, sea slime, ooze or similar masses
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- C—CHEMISTRY; METALLURGY
- C10—PETROLEUM, GAS OR COKE INDUSTRIES; TECHNICAL GASES CONTAINING CARBON MONOXIDE; FUELS; LUBRICANTS; PEAT
- C10L—FUELS NOT OTHERWISE PROVIDED FOR; NATURAL GAS; SYNTHETIC NATURAL GAS OBTAINED BY PROCESSES NOT COVERED BY SUBCLASSES C10G, C10K; LIQUEFIED PETROLEUM GAS; ADDING MATERIALS TO FUELS OR FIRES TO REDUCE SMOKE OR UNDESIRABLE DEPOSITS OR TO FACILITATE SOOT REMOVAL; FIRELIGHTERS
- C10L3/00—Gaseous fuels; Natural gas; Synthetic natural gas obtained by processes not covered by subclass C10G, C10K; Liquefied petroleum gas
- C10L3/06—Natural gas; Synthetic natural gas obtained by processes not covered by C10G, C10K3/02 or C10K3/04
- C10L3/08—Production of synthetic natural gas
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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
- C02F1/00—Treatment of water, waste water, or sewage
- C02F1/001—Processes for the treatment of water whereby the filtration technique is of importance
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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
- C02F1/00—Treatment of water, waste water, or sewage
- C02F1/02—Treatment of water, waste water, or sewage by heating
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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
- C02F1/00—Treatment of water, waste water, or sewage
- C02F1/44—Treatment of water, waste water, or sewage by dialysis, osmosis or reverse osmosis
- C02F1/444—Treatment of water, waste water, or sewage by dialysis, osmosis or reverse osmosis by ultrafiltration or microfiltration
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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
- C02F1/00—Treatment of water, waste water, or sewage
- C02F1/44—Treatment of water, waste water, or sewage by dialysis, osmosis or reverse osmosis
- C02F1/445—Treatment of water, waste water, or sewage by dialysis, osmosis or reverse osmosis by forward osmosis
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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
- C02F1/00—Treatment of water, waste water, or sewage
- C02F1/66—Treatment of water, waste water, or sewage by neutralisation; pH adjustment
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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
- C02F1/00—Treatment of water, waste water, or sewage
- C02F2001/007—Processes including a sedimentation step
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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
- C02F2101/105—Phosphorus compounds
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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
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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
- C02F2303/00—Specific treatment goals
- C02F2303/04—Disinfection
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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
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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
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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
- 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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- 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
- Y02P20/50—Improvements relating to the production of bulk chemicals
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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
- Y02W—CLIMATE CHANGE MITIGATION TECHNOLOGIES RELATED TO WASTEWATER TREATMENT OR WASTE MANAGEMENT
- Y02W30/00—Technologies for solid waste management
- Y02W30/40—Bio-organic fraction processing; Production of fertilisers from the organic fraction of waste or refuse
Abstract
The invention discloses a method and system for extracting substances and energy from sewage. According to a method package, the raw sewage is concentrated through a positive pemeable membrane, a diluted ammonium bicarbonate dipping solution is evaporated and concentrated so that the solution can be regenerated and recycled, the dipping solution with ammonium bicarbonate removed is purified through a reverse osmosis membrane to obtain purified water for recycling, and the concentrated raw sewage is subjected to an anaerobic digestion process, so that marsh gas, supernate and sludge are generated; the marsh gas can be used as fuel of steam boilers, after being subjected to ultra-filtration and purification, the supernate reacts with magnesium oxide to generate a magnesium ammonium phosphate slow-release fertilizer, and after being heated, sterilized and dewatered, the sludge becomes an organic fertilizer. The system comprises a raw sewage concentration tank, a dipping solution evaporator, a dipping solution concentrator, a low-pressure reverse osmosis water recycler, an anaerobic digestion reactor, an ultra-filtration separator, a phosphorus recycling tank, an MAP collecting tank, a sludge sterilization device and a dewaterer. By means of the method and system, the purposes of recycling purified water and energy from the sewage and preparing the magnesium ammonium phosphate slow-release fertilizer and the organic fertilizer are achieved, and environmental pollution is reduced.
Description
Technical field
The present invention relates to a kind of application membrane technology and Anaerobic Biotechnology reclaims matter and energy from sanitary sewage
Method, belong to technical field of sewage.
Background technology
Containing nutrient substance such as substantial amounts of Organic substance, nitrogen, phosphorus in the sewage that people produce during daily life.Wherein
The material such as nitrogen, phosphorus is as the necessary nutritional labeling of plant growing, if it is possible to reclaimed, and can promote as microbial manure
Enter the growth of crop.If able to the carbonaceous material in sewage is used, converts it into as energy, can effectively alleviate
The energy shortage problem that presently, there are.
But, the main whereabouts of current sanitary sewage is in centralized sewage treatment plant after the pipeline of long-distance carries
In by physical and chemical process and biological treatment process, the oxidation operation in sewage is become inorganic matter, a part is with carbon dioxide
Form be drained in air, another part changes into microbial cell, finally discharges system with the form of excess sludge；Sewage
In most of nitrogen substance change into nitrogen and remove from sewage；Meanwhile, phosphorus contained in sewage is transferred in mud, this
Partial sludge major part in follow-up disposal process is carried out discarded or landfill disposal as solid waste so that originally can be from
The phosphor resource reclaimed in sewage cannot be carried out efficient recovery, exacerbates the crisis of phosphor resource shortage.
Therefore, current sanitary sewage disposal disposal options on the one hand cannot be potential in efficient recovery sewage valuable thing
Matter and energy, on the other hand also can cause the pollution to environment, as produced greenhouse gases etc. in biological treatment process.
Summary of the invention
For a large amount of valuable substances contained in sanitary sewage and the recovery problem of the energy, the present invention provides a kind of from dirt
Extraction of substance and the method for energy in water, it is possible to reclaim material and the energy from raw sewage, provide one to realize the method simultaneously
System.
The extraction of substance from sewage of the present invention and the method for energy, concentrate including raw sewage, draw liquid regeneration, purify water
Recovery, energy regenerating, fertilizer reclaim and phosphorus six stages of recovery, and details are provided below:
(1) raw sewage enriching stage:
The raw sewage processing (getting rid of agglomerate floater contained therein and sand grains) through grid and setting pot is made to enter
The side of forward osmosis membrane, the liquid that draws of forward osmosis membrane opposite side uses ammonium bicarbonate soln, utilizes the selection of forward osmosis membrane to pass through
Property and the permeable pressure head of forward osmosis membrane both sides so that the hydrone in sewage enters ammonium bicarbonate soln through forward osmosis membrane, dirty
Suspended material and Organic substance in water are trapped, and such raw sewage is concentrated, and ammonium bicarbonate soln is diluted；
The concentration of ammonium bicarbonate soln is 200g/L～250g/L.
The surface of forward osmosis membrane is scrubbed by the flowing of column filler by forward osmosis membrane towards raw sewage side, it is achieved align
The cleaning of permeable membrane.
By the concentration in this stage, float in sewage and Organic substance etc. can be concentrated more than 4 times.
(2) liquid regeneration stage is drawn:
The ammonium bicarbonate soln that is diluted utilizes steam indirectly to heat after extracting out, makes the ammonium hydrogen carbonate in solution be heated point
Solving, obtain ammonia and carbon dioxide, steam source is in the energy regenerating stage；Under the effect of pressurization, ammonia and titanium dioxide
The mixed gas of carbon is reacted with water and is generated concentration and can flow back to drawing of forward osmosis membrane as drawing the ammonium bicarbonate soln of liquid
Liquid side, it is achieved draw the regeneration of liquid；
The heating-up temperature of the ammonium bicarbonate soln being diluted is 55 DEG C～60 DEG C.
The pressure of pressurization is 0.5～0.6MPa.
The mixed gas of ammonia and carbon dioxide and the volume ratio of water are 1000～1200:1.
(3) the Water Sproading stage is purified:
In drawing liquid regeneration stage, the ammonium bicarbonate soln being diluted after ammonium hydrogen carbonate decomposes is made by suction
With through reverse osmosis membrane, utilize the selective penetrated property of reverse osmosis membrane so that hydrone passes through reverse osmosis membrane, is purified water outlet,
Other macromole can not pass through film, then be trapped；
The recovery of water purification resource in sewage can be realized by purifying the Water Sproading stage.
(4) the energy regenerating stage
Anaerobic digestion reaction is carried out, anaerobe after the raw sewage that is concentrated in raw sewage enriching stage is preheated
Under effect, the partial organic substances in sewage is converted to methane gas (biogas), and partial organic substances is utilized by microorganism and carries out certainly
The propagation of body so that the quantity of anaerobe increases, and obtains the mud containing holophytic nutrition element (nitrogen, phosphorus etc.), and produces
Raw a part of supernatant；Methane is admitted to steam boiler simultaneously, produces steam；Steam be used for preheat anaerobic digestion reaction before dense
The thermal source of the ammonium bicarbonate soln that contracting raw sewage, heating are diluted and sterilization mud；Unnecessary energy (steam) can drive
Electromotor produces electric energy.
The preheating temperature of raw sewage is 35 DEG C～37 DEG C.
The recycling of energy in sewage can be realized by the energy regenerating stage.
(5) fertilizer recovery stage:
Utilize the high-temperature steam that the energy regenerating stage produces that the mud that the energy regenerating stage produces is carried out sewage sludge disinfection, with
Killing the pathogenic bacterium in mud, the mud after sterilizing obtains fertilizer (rich in the nutrient such as nitrogen, phosphorus) after processed；
Sewage sludge disinfection is that mud is heated to 70 DEG C～72 DEG C, and stops 5～8 minutes.
Can realize reclaiming from raw sewage the purpose of the nutrient such as nitrogen, phosphorus by fertilizer recovery stage.
(6) phosphorus recovery stage
The supernatant producing the energy regenerating stage carries out Ultrafiltration Purifying by ultrafilter membrane, it is allowed to less than ultrafilter membrane aperture
Component passes through, and is retained by ultrafilter membrane more than the component in ultrafilter membrane aperture, under suction the hydrone in supernatant and dissolving
Property material permeance ultrafilter membrane, becomes permeate, and the solid matter in supernatant is then retained by ultrafilter membrane；By consolidating that ultrafilter membrane retains
Body material sends raw sewage concentration basin back to；Permeate is carried out phosphorus recovery, adds NaOH and pH is adjusted to 8～8.5, be subsequently adding oxidation
Magnesium (MgO), in the basic conditions, phosphorus and ammonia in permeate react generation ammoniomagnesium phosphate (guanite) with magnesium oxide.
Rich in the nutrient substance such as nitrogen, phosphorus in guanite, it is the fertilizer of a kind of high-quality, can be as slow-release fertilizer.Returned by phosphorus
The receipts stage, it is possible to achieve reclaim the purpose of nitrogen, P elements from sewage in a large number.
Realize the system reclaiming matter and energy from sewage of said method, by the following technical solutions:
This system, including raw sewage concentration basin, draw liquid vaporizer, draw liquid concentrator, low pressure reverse osmosis water recoverer,
Anaerobic digestion reaction vessel, steam boiler, ultra-filtration and separation device, phosphorus recovery pond, sewage sludge disinfection device and dewaterer；
Being provided with forward osmosis membrane in raw sewage concentration basin, raw sewage concentration basin is divided into sewage side and draws liquid by forward osmosis membrane
Side, the top of sewage side is provided with raw sewage water inlet pipe, reverse osmosis concentrated liquid return duct, ultrafiltration concentrate recirculation pipe and MAP (phosphoric acid
Ammonium magnesium) pond return duct；Be additionally provided with internal partition in sewage side, the bottom of internal partition both sides be respectively arranged with interior circulation water inlet pipe and
Interior recycling outlet, the space bottom between internal partition and forward osmosis membrane is provided with screen cloth, and interior recycling outlet is positioned at this screen cloth
Bottom, be provided with water circulating pump between interior circulation water inlet pipe and interior recycling outlet；Draw the bottom of liquid side to be provided with dilution and draw
Taking liquid discharge pipe, top is provided with draws liquid filler pipe；
Being provided with the first heating coil in drawing liquid vaporizer, the first steam pipe and steam are passed through in one end of the first heating coil
Boiler is connected, and the other end is connected with steam boiler by the first condensation return pipt；Draw the side of liquid vaporizer by described dilute
Releasing and draw liquid discharge pipe and be connected with raw sewage concentration basin, opposite side passes through feed water by reverse osmosis pipe and low pressure reverse osmosis water recoverer phase
Even；Draw the top of liquid vaporizer draw liquid steam outlet pipe by evaporation and draw liquid concentrator and be connected, draw liquid concentrator and pass through
The described liquid filler pipe that draws is connected with raw sewage concentration basin；
Being provided with reverse osmosis membrane in low pressure reverse osmosis water recoverer, the port of export of reverse osmosis membrane passes through water purification recovery tube with anti-
Infiltration suction pump is connected, and low pressure reverse osmosis water recoverer is connected with raw sewage concentration basin by reverse osmosis concentrated liquid return duct, low
Pressure reverse osmosis water withdrawer is connected with drawing liquid vaporizer by described feed water by reverse osmosis pipe；
The top of anaerobic digestion reaction vessel is provided with biogas pipe, and bottom is provided with mud discharge pipe, anaerobic digestion reaction vessel upper
Portion is connected with ultra-filtration and separation device by Digestive system discharge pipe, and the bottom of anaerobic digestion reaction vessel is by concentrating sewage outlet pipe and institute
State water circulating pump to be connected, concentrate sewage outlet pipe through vapor-water heat exchanger；The top of vapor-water heat exchanger connects the second steam pipe,
Bottom is connected with steam boiler by the second condensation return pipt；
Being provided with ultrafilter membrane in ultra-filtration and separation device, the port of export of ultrafilter membrane is by ultrafiltration suction pump and ultrafiltrate water inlet pipe and phosphorus
Recovery pond is connected；Ultra-filtration and separation device is connected with anaerobic digestion reaction vessel by Digestive system discharge pipe, and by the dense water of described ultrafiltration
Return duct is connected with raw sewage concentration basin；
Phosphorus recovery pond is connected with MAP collecting pit by phosphorus recovery pond outlet pipe, MAP collecting pit by MAP pond return duct and
Raw sewage concentration basin is connected, and is provided with grid in MAP collecting pit；
Being provided with the second heating coil in sewage sludge disinfection device, one end of the second heating coil is steamed by the 3rd steam pipe is same
Boiler furnace is connected, and the other end is connected with steam boiler by the 3rd condensation return pipt；Mud is passed through in the side of sewage sludge disinfection device
Discharge pipe is connected with anaerobic digestion reaction vessel, and opposite side enters mud pipe by dewaterer and is connected with dewaterer.
Being filled with column filler in the space, sewage side of described raw sewage concentration basin, column filler accounts for sewage side spatial volume
5～10%.
Present invention is generally directed to valuable substance contained in sewage and the energy carries out recycling, use film to process
Technology reclaims these matter and energies with the combination of Anaerobic Biotechnology from former sanitary sewage, to reach both to reclaim material, energy
Amount, reduces again the externally discharged waste water problem to environment.Have a characteristic that
(1) can realize reclaiming to maximum high-quality freshwater resources, secondary energy sources, organic fertilizer and high-quality from raw sewage
Ammoniomagnesium phosphate (MAP)；
(2) compared with sewage water treatment method compare, floor space is little, simple to operate, effluent quality is good, reduce dirt
While water is to the adverse effect of environment, it is possible to obtain the advantages such as considerable economic benefit；
(3) utilize forward osmosis membrane that raw sewage is concentrated, the concentration of wastewater entering anaerobic digestion reaction vessel can be improved,
Reduce the volume of required anaerobic digestion reaction vessel, reduce calorific requirement, improve the efficiency of anaerobic treatment process；
(4) by just permeating/sewage processes by reverse osmosis group technology, can obtain the recycle-water of high-quality；
(5) can obtain the higher ammoniomagnesium phosphate of purity (MAP) and the organic fertilizer processed through disinfection, these are fertile
Material reduces ecological risk in application process.
Accompanying drawing explanation
Fig. 1 is the structural principle schematic diagram of the system of extraction of substance and energy from sewage in the present invention.
Wherein: 1, raw sewage water inlet pipe, 2, raw sewage concentration basin, 3, forward osmosis membrane, 4, internal partition, 5, screen cloth, 6, column
Filler, 7, interior recycling outlet, 8, water circulating pump, 9, interior circulation water inlet pipe, 10, concentrate sewage outlet pipe, 11, steam-water heat exchanging
Device, the 12, first heating coil, 13, anaerobic digestion reaction vessel, 14, biogas pipe, 15, gas pipeline, 16, biogas send pipe outside, 17,
Mud discharge pipe, 18, steam boiler, the 19, first steam pipe, 20, draw liquid vaporizer, the 21, first condensation return pipt, 22,
Two steam pipes, the 23, second condensation return pipt, 24, evaporation draw liquid steam outlet pipe, 25, draw liquid concentrator, 26, draw liquid filling
Pipe, 27, dilution draw liquid discharge pipe, 28, feed water by reverse osmosis pipe, 29, low pressure reverse osmosis water recoverer, 30, reverse osmosis membrane, 31,
Reverse osmosis suction pump, 32, water purification recovery tube, 33, water purification outlet tube, 34, reverse osmosis concentrated liquid return duct, 35, sewage sludge disinfection dress
Put, the 36, the 3rd steam pipe, the 37, the 3rd condensation return pipt, 38, dewaterer enter mud pipe, 39, dewaterer, 40, Digestive system discharge pipe,
41, ultra-filtration and separation device, 42, ultrafilter membrane, 43, ultrafiltration suction pump, 44, ultrafiltrate water inlet pipe, 45, phosphorus recovery pond, 46, phosphorus recovery pond
Outlet pipe, 47, MAP collecting pit, 48, grid, 49, MAP pond return duct, 50, ultrafiltration concentrate recirculation pipe, the 51, second heating coil.
Detailed description of the invention
The present invention uses membrane technology to combine with Anaerobic Biotechnology, utilizes forward osmosis membrane technology to concentrate raw sewage
To put forward high-octane organic efficiency, reverse osmosis technology is utilized to obtain the recycle-water of high-quality.By anaerobic digestion techniques from concentration
After sewage in recover energy, from the supernatant of anaerobic digestion reaction vessel, reclaim ammoniomagnesium phosphate (MAP) simultaneously, use anaerobic digestion
The producing organic fertilizer from sludge material of reactor.
The system reclaiming matter and energy from sewage of the present invention, as it is shown in figure 1, include raw sewage concentration basin 2, draw
Liquid vaporizer 20, draw liquid concentrator 25, low pressure reverse osmosis water recoverer 29, vapor-water heat exchanger 11, anaerobic digestion reaction vessel 13,
Ultra-filtration and separation device 41, phosphorus recovery pond 45, MAP collecting pit 47, sewage sludge disinfection device 35 and dewaterer 39.In raw sewage concentration basin 2
Being provided with the forward osmosis membrane 3 being vertically arranged, raw sewage concentration basin 2 is divided into sewage side (left side) and draws (the right side, liquid side by forward osmosis membrane 3
Side).Left upper portion is provided with raw sewage water inlet pipe 1, reverse osmosis concentrated liquid return duct 34, MAP pond return duct 49 and the dense water of ultrafiltration and returns
Flow tube 50.Left side is provided with, near forward osmosis membrane 3 side, the internal partition 4 being vertically arranged, the unsettled (upper end of internal partition 4 of internal partition about 4
The upper end certain distance of distance raw sewage concentration basin 2, the lower end of internal partition 4 arranges free with the bottom surface of raw sewage concentration basin 2
Gap), make internal partition 4 is respectively provided with water stream channel up and down.Space bottom between internal partition 4 and forward osmosis membrane 3 is provided with inclination
The screen cloth 5 placed.The bottom of screen cloth 5 is provided with interior recycling outlet 7, and interior recycling outlet 7 connects interior circulation by water circulating pump 8
Water inlet pipe 9, interior circulation water inlet pipe 9 is connected to the raw sewage concentration basin 2 bottom at internal partition 4 opposite side.At raw sewage concentration basin 2
Leftward space in be filled with column filler 6, column filler accounts for the 5～10% of leftward space volume.The right side of raw sewage concentration basin 2
Side bottom connects has dilution to draw liquid discharge pipe 27, and top connects draws liquid filler pipe 26.
The bottom drawing liquid vaporizer 20 is provided with the first heating coil 12, and the first heating coil 12 is by the first steam pipe
19 and first condensation return pipt 21 be connected with steam boiler 18.Draw liquid vaporizer 20 left lower and draw liquid discharge by dilution
Pipe 27 is connected with raw sewage concentration basin 2, and lower right side is provided with feed water by reverse osmosis pipe 28, and liquid steam outlet pipe is drawn by evaporation in top
24 are connected with drawing liquid concentrator 25, draw liquid concentrator 25 and are connected with raw sewage concentration basin 2 by drawing liquid filler pipe 26.
Being provided with vertically placed type reverse osmosis membrane 30 in low pressure reverse osmosis water recoverer 29, water purification is passed through in the water side of reverse osmosis membrane 30
Recovery tube 32 is connected with reverse osmosis suction pump 31, and the water side of reverse osmosis suction pump 31 connects water purification outlet tube 33.Low pressure reverse osmosis
The left bottom of permeable withdrawer 29 is connected with drawing liquid vaporizer 20 by feed water by reverse osmosis pipe 28.Low pressure reverse osmosis Water Sproading
The right upper portion of device 29 is connected with raw sewage concentration basin 2 by reverse osmosis concentrated liquid return duct 34.
The bottom of anaerobic digestion reaction vessel 13 is connected with water circulating pump 8 by concentrating sewage outlet pipe 10, concentrates sewage and goes out
Water pipe 10, through vapor-water heat exchanger 11, heats through vapor-water heat exchanger 11.The top of vapor-water heat exchanger 11 connects the second steam pipe
22, bottom is connected with steam boiler 18 by the second condensation return pipt 23.The top of anaerobic digestion reaction vessel 13 is provided with biogas pipe
14, bottom is provided with mud discharge pipe 17.The top of anaerobic digestion reaction vessel 13 is by Digestive system discharge pipe 40 and ultra-filtration and separation device
41 are connected.
Being provided with vertically placed type ultrafilter membrane 42 in ultra-filtration and separation device 41, the port of export of ultrafilter membrane 42 connects ultrafiltration suction pump 43,
Ultra-filtration and separation device 41 passes on left Digestive system discharge pipe 40 and is connected with anaerobic digestion reaction vessel 13, and ultrafiltration concentrate recirculation is passed through on right side
Pipe 50 is connected with raw sewage concentration basin 2.
The ultrafiltrate water inlet pipe 44 that passes on left of phosphorus recovery pond 45 is connected with ultrafiltration suction pump 43, and right side is provided with phosphorus recovery pond
Outlet pipe 46.It is provided with grid 48 in MAP collecting pit 47, passes on left phosphorus recovery pond outlet pipe 46 and be connected with phosphorus recovery pond 45, right
Side is connected with raw sewage concentration basin 2 by MAP pond return duct 49.
Being provided with the second heating coil 51 in sewage sludge disinfection device 35, the 3rd steam pipe is passed through on the top of the second heating coil 51
36 are connected with steam boiler 18, and bottom is connected with steam boiler 18 by the 3rd condensation return pipt 37.Sewage sludge disinfection device 35
Left side is provided with mud discharge pipe 17, and right side is entered mud pipe 38 by dewaterer and is connected with dewaterer 39.
Steam boiler 18 is by first steam pipe the 19, second steam pipe the 22, the 3rd steam pipe the 36, first condensation return pipt
21, the second condensation return pipt 23 and the 3rd condensation return pipt 37 respectively with the first heating coil 12 drawn in liquid vaporizer 20,
Vapor-water heat exchanger 11 is connected with the second heating coil 51 in sewage sludge disinfection device 35.
Said system is extraction of substance and the process of energy from sewage, concentrates including raw sewage, draws liquid regeneration, purifies water
Recovery, energy regenerating, fertilizer reclaim and phosphorus six stages of recovery.It it is the selection utilizing forward osmosis membrane 3 in raw sewage concentration basin 2
Permeability and due to the raw sewage permeable pressure head that in forward osmosis membrane 3 both sides cause different with drawing liquid osmotic pressure so that former dirt
Hydrone in water enters ammonium bicarbonate soln (drawing liquid) side through forward osmosis membrane 3.Then, the liquid that draws being diluted enters
Drawing liquid vaporizer 20, under the effect of heating, the ammonium hydrogen carbonate volatilization that dilution is drawn in liquid becomes ammonia and carbon dioxide, ammonia
Gas and carbon dioxide enter and draw liquid concentrator 25.In drawing liquid concentrator 25, ammonia and carbon dioxide are compressed, and and water
Reaction regenerates the ammonium bicarbonate soln of concentration 200～250g/L, it is achieved draw the concentrating regenerative of liquid.Evaporate ammonium hydrogen carbonate
Dilution draw liquid enter low pressure reverse osmosis water recoverer 29, under the selective penetrated property of reverse osmosis membrane 30 and the effect of external pressure,
Hydrone in water inlet forms the recycle-water of high-quality through reverse osmosis membrane.The concentrated solution obtained in raw sewage concentration basin 2 enters
Anaerobic digestion reaction vessel 13, wherein under the effect of anaerobe, concentrated solution carries out anaerobic reaction and produces biogas, biogas combustion
Can make to produce in steam boiler 18 steam, the steam of generation draws liquid vaporizer 20, vapor-water heat exchanger 11 and dirt for offer
Heat needed for mud bactericidal unit 35.The supernatant of anaerobic digestion reaction vessel 13, after ultra-filtration and separation device 41 purifies, reclaims at phosphorus
Generation ammoniomagnesium phosphate (MAP) is reacted in the basic conditions with the magnesium oxide added in pond 45.Anaerobic digestion reaction vessel 13 produces
Mud after sterilizing, obtains organic fertilizer after being dehydrated with dewaterer 39 in sewage sludge disinfection device 35.
By sewage reclaims the detailed process of matter and energy, as described below:
1. in raw sewage concentration basin 2, raw sewage is concentrated
Process, through grid and sand setting, the raw sewage eliminating agglomerate floater and sand grains to be entered by raw sewage water inlet pipe 1
Raw sewage concentration basin 2.The forward osmosis membrane 3 arranged in raw sewage concentration basin 2 has selective penetrated property, only allows the water in raw sewage
Molecule passes through, and does not allow other material permeance.In the left side of forward osmosis membrane 3 be enter raw sewage, right side be concentration 200～
The ammonium bicarbonate soln (drawing liquid) of 250g/L.The osmotic pressure of raw sewage is little, and the osmotic pressure of ammonium bicarbonate soln is big, so,
The both sides of forward osmosis membrane 3 just create permeable pressure head.Under the effect of permeable pressure head and the selective penetrated property of forward osmosis membrane 3, former
Hydrone in sewage spreads to ammonium bicarbonate soln side through forward osmosis membrane 3 so that ammonium bicarbonate soln is diluted.Former dirt
Other component in water can not pass through forward osmosis membrane 3, is trapped within the left side of forward osmosis membrane 3, forms the concentrated solution of raw sewage.?
Under the suction of water circulating pump 8 and castering action, in raw sewage concentration basin 2, the sewage near forward osmosis membrane region is by recirculated water
Pump 8 aspirates, left at internal partition 4 right side area, interior recycling outlet 7, water circulating pump 8, interior circulation water inlet pipe 9 and internal partition 4
Side region is circulated flowing, under the effect of circulating water flow, the column filler 6 of filling in raw sewage concentration basin 2 also including
On the left of dividing plate 4 and it is circulated flowing on the right side of internal partition 4, due to the iris action of screen cloth 5, in column filler 6 will not enter into
In recycling outlet 7, but slide into for 5 times bottom the left field of internal partition 4 along tilting screen cloth, in this region, following
Under the effect of ring current, column filler 6 moves upward.The flowing of column filler 6 can form the brush of the surface to forward osmosis membrane 3
Wash, it is achieved the cleaning action to forward osmosis membrane 3.
After being processed by raw sewage concentration basin 2, the concentration of raw sewage can be concentrated to original 4～5 times.
2. drawing liquid vaporizer 20 and drawing liquid concentrator 25 carries out drawing the regeneration of liquid
The ammonium bicarbonate soln being diluted in raw sewage concentration basin 2 draws liquid discharge pipe 27 entrance by dilution and draws liquid
Vaporizer 20, under drawing the heat effect of the first heating coil 12 bottom liquid vaporizer 20, the ammonium hydrogen carbonate being diluted is molten
Liquid is heated to 55 DEG C～60 DEG C so that ammonium hydrogen carbonate decomposes generates carbon dioxide and ammonia, discharges.Two produced
Carbonoxide and ammonia draw liquid steam outlet pipe 24 entrance by evaporation and draw liquid concentrator 25, in drawing liquid concentrator 25, are adding
Under the pressure effect of pressure 0.5～0.6MPa, the mixed gas of carbon dioxide and ammonia and water react generation concentration 200～250g/L
Ammonium bicarbonate soln, ammonium bicarbonate soln by draw liquid filler pipe 26 send back to raw sewage concentration basin 2 to draw liquid side (right
Side), thus realize drawing the regeneration of liquid.
3. in low pressure reverse osmosis water recoverer 29, carry out purifying the recovery of water
Liquid (ammonium bicarbonate soln) is drawn in dilution after evaporating carbon dioxide and ammonia in drawing liquid vaporizer 20
Low pressure reverse osmosis water recoverer 29 is entered by feed water by reverse osmosis pipe 28.The reverse osmosis arranged in low pressure reverse osmosis water recoverer 29
Film 30 has selective penetrated property, and under the swabbing action of reverse osmosis suction pump 31, the hydrone in water inlet can pass through reverse osmosis
Film 30 forms Recovery Purifying water, and other component in water inlet can not pass through reverse osmosis membrane 30, is trapped within low pressure reverse osmosis water and returns
Receive in device 29 so that water inlet is concentrated, and the water inlet that this part is concentrated returns to raw sewage by reverse osmosis concentrated liquid return duct 34
The front end of concentration basin 2.
Water can be purified by low pressure reverse osmosis water recoverer 29, thus realize purifying the recovery of water.
4. in anaerobic digestion reaction vessel 13, realize the recovery of energy in sewage
The concentration sewage obtained in raw sewage concentration basin 2 is by concentrating sewage outlet pipe 10, through vapor-water heat exchanger 11
Pre-heat effect, after making sewage temperature reach 35 DEG C～37 DEG C, from bottom enter anaerobic digestion reaction vessel 13.Enter anaerobic digestion
The effect concentrating sewage anaerobe in the reactor of reactor 13 issues raw anaerobic reaction, and the Organic substance in water is decomposed
Become inorganic matter, produce methane gas (biogas) simultaneously.The biogas the produced biogas pipe 14 by anaerobic digestion reaction vessel 13 top
Discharging, a part is used for heating steam boiler 18 to produce steam by gas pipeline 15.The steam produced is respectively by first
Steam pipe the 19, second steam pipe 22 and the 3rd steam pipe 36 deliver to the first heating coil 12, vapor-water heat exchanger 11 and the second heating
Coil pipe 51, be used for evaporate dilution draw in liquid ammonia and carbon dioxide, preheating concentrate sewage, to mud disinfection.The
The condensed water that one heating coil 12, vapor-water heat exchanger 11 and the second heating coil 51 produce is respectively by the first condensation return pipt
21, the second condensation return pipt 23 and the 3rd condensation return pipt 37 come back to steam boiler 18 and generate steam.Anaerobic digestion is reacted
The unnecessary biogas that device 13 produces can be sent outside as energy.The supernatant that anaerobic digestion produces in anaerobic digestion reaction vessel 13
Being discharged by the Digestive system discharge pipe 40 on reactor top, the mud of generation is by being located at the mud discharge pipe 17 of reactor bottom
Discharge.
5. in ultra-filtration and separation device 41 and phosphorus recovery pond 45, generate ammoniomagnesium phosphate
The supernatant discharged from anaerobic digestion reaction vessel 13 enters ultra-filtration and separation device 41 by Digestive system discharge pipe 40.Super
Ultrafilter membrane 42 in filter separator 41 has selective penetrated property, only allows particle diameter saturating less than the dissolved matter in ultrafilter membrane aperture
Cross.Under the swabbing action of ultrafiltration suction pump 43, the dissolubility component entered in the Digestive system of ultra-filtration and separation device 41 can pass through
Film, enters phosphorus recovery pond 45 by ultrafiltrate water inlet pipe 44, and in Digestive system, the mud of entrained with is trapped within ultra-filtration and separation device 41
In.This partial sludge being trapped returns to raw sewage concentration basin 2 by ultrafiltration concentrate recirculation pipe 50.Clean through ultra-filtration and separation device 41
Digestive system after change enters phosphorus recovery pond 45 through ultrafiltrate water inlet pipe 44, adds sodium hydroxide and adjusted by pH in phosphorus recovery pond 45
To 8～8.5, being subsequently adding magnesium oxide, in the basic conditions, ammonia, phosphorus in Digestive system generate ammoniomagnesium phosphate with magnesium oxide reaction.
6. in MAP collecting pit 47, reclaim ammoniomagnesium phosphate
The ammoniomagnesium phosphate generated in phosphorus recovery pond 45 enters MAP collecting pit 47 by phosphorus recovery pond outlet pipe 46.At MAP
Being provided with grid 48 in collecting pit 47, the ammoniomagnesium phosphate generated in phosphorus recovery pond 45 deposits in grid 48.By periodically
Cleaning grid 48 can reclaim ammoniomagnesium phosphate.
Can obtain highly purified ammoniomagnesium phosphate by this process, ammoniomagnesium phosphate can serve as slow-release fertilizer.
7. in sewage sludge disinfection device 35 and dewaterer 39, reclaim organic fertilizer
The excess sludge discharged from anaerobic digestion reaction vessel 13 enters sewage sludge disinfection device 35 by mud discharge pipe 17,
Utilize the second heating coil 51 that mud is heated to 70 DEG C～72 DEG C in sewage sludge disinfection device 35, keep 5～8 minutes to mud
Carry out sterilization treatment.Mud after sterilizing enters mud pipe 38 by dewaterer and enters dewaterer 39, in dewaterer 39 in mud
Moisture content can be lowered to less than 70%, and this partial sludge can utilize as organic fertilizer after mummification.
Claims (10)
1. extraction of substance and a method for energy from sewage, is characterized in that: include that raw sewage concentrates, draws liquid regeneration, clean
Change Water Sproading, energy regenerating, fertilizer reclaims and phosphorus reclaims six stages, and details are provided below:
(1) raw sewage enriching stage:
Making the raw sewage processed through grid and setting pot enter the side of forward osmosis membrane, the liquid that draws of forward osmosis membrane opposite side is adopted
With ammonium bicarbonate soln, utilize selective penetrated property and the permeable pressure head of forward osmosis membrane both sides of forward osmosis membrane so that in sewage
Hydrone enters ammonium bicarbonate soln through forward osmosis membrane, and suspended material and Organic substance in sewage are trapped, such raw sewage
Being concentrated, ammonium bicarbonate soln is diluted；
(2) liquid regeneration stage is drawn:
The ammonium bicarbonate soln being diluted utilizes steam indirectly to heat after extracting out, makes the ammonium hydrogen carbonate decomposes in solution,
To ammonia and carbon dioxide, steam source is in the energy regenerating stage；Under the effect of pressurization, both gas is anti-with water again
Should generate concentration can be as drawing the ammonium bicarbonate soln of liquid, and flow back to forward osmosis membrane draws liquid side, it is achieved draw liquid
Regeneration；
(3) the Water Sproading stage is purified:
In drawing liquid regeneration stage, the ammonium bicarbonate soln being diluted after ammonium hydrogen carbonate decomposes is worn by swabbing action
Cross reverse osmosis membrane, utilize the selective penetrated property of reverse osmosis membrane so that hydrone passes through reverse osmosis membrane, is purified water outlet, other
Macromole can not pass through film, then be trapped；
(4) the energy regenerating stage:
Anaerobic digestion reaction is carried out, in the effect of anaerobe after the raw sewage that is concentrated in raw sewage enriching stage is preheated
Under, the partial organic substances in sewage is converted to methane gas, and partial organic substances is utilized the propagation carrying out self by microorganism, makes
The quantity obtaining anaerobe increases, and obtains the mud containing holophytic nutrition element, and produces supernatant；Methane is sent simultaneously
Enter steam boiler, produce steam；The bicarbonate that steam is used for the concentration raw sewage before preheating anaerobic digestion reaction, heating is diluted
The thermal source of ammonium salt solution and sterilization mud；
(5) fertilizer recovery stage:
The high-temperature steam that the energy regenerating stage produces is utilized the mud that the energy regenerating stage produces to be carried out sewage sludge disinfection, to kill
Pathogenic bacterium in mud, the mud after sterilizing obtains fertilizer after processed；
(6) phosphorus recovery stage:
The supernatant producing the energy regenerating stage carries out Ultrafiltration Purifying by ultrafilter membrane, it is allowed to less than the component in ultrafilter membrane aperture
Pass through, retained by ultrafilter membrane more than the component in ultrafilter membrane aperture, under suction the hydrone in supernatant and dissolubility thing
Matter passes through ultrafilter membrane, becomes permeate, and the solid matter in supernatant is then retained by ultrafilter membrane；The solids retained by ultrafilter membrane
Matter sends raw sewage concentration basin back to；Permeate is carried out phosphorus recovery, adds NaOH and pH is adjusted to 8～8.5, be subsequently adding magnesium oxide,
In the basic conditions, the phosphorus in permeate and ammonia react generation ammoniomagnesium phosphate with magnesium oxide.
Extraction of substance and the method for energy from sewage the most according to claim 1, is characterized in that, described raw sewage concentrates
In stage, the concentration of ammonium bicarbonate soln is 200～250g/L.
Extraction of substance and the method for energy from sewage the most according to claim 1, is characterized in that, described forward osmosis membrane court
The surface of forward osmosis membrane is scrubbed by the flowing of column filler to raw sewage side, it is achieved the cleaning to forward osmosis membrane.
Extraction of substance and the method for energy from sewage the most according to claim 1, is characterized in that, described in draw liquid regeneration
The heating-up temperature of the ammonium bicarbonate soln being diluted in the stage is 55 DEG C～60 DEG C.
Extraction of substance and the method for energy from sewage the most according to claim 1, is characterized in that, described in draw liquid regeneration
Moulding pressure in stage is 0.5～0.6MPa.
Extraction of substance and the method for energy from sewage the most according to claim 1, is characterized in that, described in draw liquid regeneration
In stage, the mixed gas of ammonia and carbon dioxide is 1000～1200:1 with the volume ratio of water.
Extraction of substance and the method for energy from sewage the most according to claim 1, is characterized in that, described energy regenerating rank
The preheating temperature of section raw sewage is 35 DEG C～37 DEG C.
Extraction of substance and the method for energy from sewage the most according to claim 1, is characterized in that, described fertilizer reclaims rank
In Duan, sewage sludge disinfection is that mud is heated to 70 DEG C～72 DEG C, and stops 5～8 minutes.
9. from sewage, reclaim a system for matter and energy, including raw sewage concentration basin, draw liquid vaporizer, to draw liquid dense
Contracting device, low pressure reverse osmosis water recoverer, anaerobic digestion reaction vessel, steam boiler, ultra-filtration and separation device, phosphorus recovery pond, sewage sludge disinfection
Device and dewaterer；It is characterized in that:
Being provided with forward osmosis membrane in raw sewage concentration basin, raw sewage concentration basin is divided into sewage side and draws liquid side by forward osmosis membrane,
The top of sewage side is provided with raw sewage water inlet pipe, reverse osmosis concentrated liquid return duct, ultrafiltration concentrate recirculation pipe and MAP(ammonium phosphate
Magnesium) pond return duct；Being additionally provided with internal partition in sewage side, the bottom of internal partition both sides is respectively arranged with interior circulation water inlet pipe and interior
Recycling outlet, the space bottom between internal partition and forward osmosis membrane is provided with screen cloth, and interior recycling outlet is positioned at this screen cloth
Bottom, is provided with water circulating pump between interior circulation water inlet pipe and interior recycling outlet；Draw the bottom of liquid side to be provided with dilution and draw
Liquid discharge pipe, top is provided with draws liquid filler pipe；
Being provided with the first heating coil in drawing liquid vaporizer, the first steam pipe and steam boiler are passed through in one end of the first heating coil
Being connected, the other end is connected with steam boiler by the first condensation return pipt；The side drawing liquid vaporizer is drawn by described dilution
Taking liquid discharge pipe to be connected with raw sewage concentration basin, opposite side is connected with low pressure reverse osmosis water recoverer by feed water by reverse osmosis pipe；
Draw the top of liquid vaporizer draw liquid steam outlet pipe by evaporation and draw liquid concentrator and be connected, draw liquid concentrator by described
Draw liquid filler pipe to be connected with raw sewage concentration basin；
Being provided with reverse osmosis membrane in low pressure reverse osmosis water recoverer, the port of export of reverse osmosis membrane passes through water purification recovery tube and reverse osmosis
Suction pump is connected, and low pressure reverse osmosis water recoverer is connected with raw sewage concentration basin by reverse osmosis concentrated liquid return duct, and low pressure is anti-
Infiltration water recoverer is connected with drawing liquid vaporizer by described feed water by reverse osmosis pipe；
The top of anaerobic digestion reaction vessel is provided with biogas pipe, and bottom is provided with mud discharge pipe, and the top of anaerobic digestion reaction vessel leads to
Crossing Digestive system discharge pipe to be connected with ultra-filtration and separation device, the bottom of anaerobic digestion reaction vessel is followed with described by concentrating sewage outlet pipe
Ring water pump is connected, and concentrates sewage outlet pipe through vapor-water heat exchanger；The top of vapor-water heat exchanger connects the second steam pipe, bottom
It is connected with steam boiler by the second condensation return pipt；
Being provided with ultrafilter membrane in ultra-filtration and separation device, the port of export of ultrafilter membrane is reclaimed with phosphorus by ultrafiltration suction pump and ultrafiltrate water inlet pipe
Pond is connected；Ultra-filtration and separation device is connected with anaerobic digestion reaction vessel by Digestive system discharge pipe, and by described ultrafiltration concentrate recirculation
Pipe is connected with raw sewage concentration basin；
Phosphorus recovery pond is connected with MAP collecting pit by phosphorus recovery pond outlet pipe, and MAP collecting pit is by MAP pond return duct and former dirt
Water concentration basin is connected, and is provided with grid in MAP collecting pit；
Being provided with the second heating coil in sewage sludge disinfection device, the 3rd same steam kettle of steam pipe is passed through in one end of the second heating coil
Stove is connected, and the other end is connected with steam boiler by the 3rd condensation return pipt；The side of sewage sludge disinfection device is discharged by mud
Pipe is connected with anaerobic digestion reaction vessel, and opposite side enters mud pipe by dewaterer and is connected with dewaterer.
The system reclaiming matter and energy from sewage the most according to claim 9, the sewage of described raw sewage concentration basin
Being filled with column filler in space, side, column filler accounts for the 5～10% of sewage side spatial volume.
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| CN108658662A (en) * | 2018-05-30 | 2018-10-16 | 景德镇陶瓷大学 | A kind of cementing fertilizer of ammonium magnesium phosphate inorganic-organic and preparation method thereof |
| CN110550833A (en) * | 2019-10-17 | 2019-12-10 | 长春工程学院 | System and method for recycling carbon, nitrogen, phosphorus and water in sewage |
| CN111533393A (en) * | 2020-05-22 | 2020-08-14 | 北京工业大学 | System and method for purifying aquaculture wastewater and recovering energy and nutrient elements in aquaculture wastewater |
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| JP7392959B1 (en) | 2022-05-20 | 2023-12-06 | 木村化工機株式会社 | Ammonia recovery equipment |
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