CN108545883A - Closed ecological system wastewater treatment method - Google Patents
Closed ecological system wastewater treatment method Download PDFInfo
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- CN108545883A CN108545883A CN201711462805.8A CN201711462805A CN108545883A CN 108545883 A CN108545883 A CN 108545883A CN 201711462805 A CN201711462805 A CN 201711462805A CN 108545883 A CN108545883 A CN 108545883A
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- membrane bioreactor
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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
- 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
-
- C—CHEMISTRY; METALLURGY
- C02—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
- C02F—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
- C02F2101/00—Nature of the contaminant
- C02F2101/10—Inorganic compounds
- C02F2101/16—Nitrogen compounds, e.g. ammonia
-
- C—CHEMISTRY; METALLURGY
- C02—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
- C02F—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
- C02F2101/00—Nature of the contaminant
- C02F2101/30—Organic compounds
-
- C—CHEMISTRY; METALLURGY
- C02—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
- C02F—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
- C02F2209/00—Controlling or monitoring parameters in water treatment
- C02F2209/06—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
- C02F2209/00—Controlling or monitoring parameters in water treatment
- C02F2209/22—O2
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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
- 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
- C02F2303/00—Specific treatment goals
- C02F2303/04—Disinfection
-
- 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
- C02F3/12—Activated sludge processes
- C02F3/1236—Particular type of activated sludge installations
- C02F3/1268—Membrane bioreactor systems
-
- C—CHEMISTRY; METALLURGY
- C02—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
- C02F—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
- C02F3/00—Biological treatment of water, waste water, or sewage
- C02F3/28—Anaerobic digestion processes
- C02F3/2853—Anaerobic digestion processes using anaerobic membrane bioreactors
Abstract
The closed ecological system wastewater treatment method of the present invention, wherein closed ecological system wastewater treatment equipment, including：Primary filter；Regulating tank；Anaerobic membrane bioreactor passes through piping connection with regulating tank；Tubular membrane component passes through piping connection with anaerobic membrane bioreactor；Aerobic membrane bioreactor passes through piping connection with tubular membrane component；Go out water tank, passes through piping connection with aerobic membrane bioreactor；The closed ecological system wastewater treatment method of the present invention, including：Primary filter；Anaerobe is cultivated in anaerobic membrane bioreactor and makes anaerobe to sewage purification；Aerobic microbiological is cultivated in aerobic membrane bioreactor and makes aerobic microbiological to sewage purification；Using aerobic microbiological to sewage purification after, to water sterilization after purification.Biotechnology and membrane separation technique are coupled by technical scheme of the present invention, greatly reduce system the space occupied, independent existence, which is provided, for anaerobe and aerobic microbiological inhabites space, effectively increase functional microorganism activity and contaminant degradation effect, overall process is kept closed simultaneously, can gas discharged to biological treatment process be collected purification, eliminate secondary pollution.
Description
Technical field
The present invention relates to wastewater treatments and reuse, more particularly to a kind of closed ecological system wastewater treatment method.
Background technology
Water regeneration with recycle be medium-term and long-term manned task necessity and manned space flight regenerative ring
Control life support system key components.Outside manned space flight device, LEO space station and ground celestial body lifetime etc. it is close
Sewage in the ecosystem is closed mainly to be made of urine, sanitary waste-water, condensed water, phase transformation water (dry waste generation) etc., wherein
Pollutant mainly include be organic matter, nitrogen, phosphorus and other minerals.
Current medium-term and long-term human spaceflight operation is all made of materialization technology to realize the regeneration of water and be back to occupant's drinking water
And sanitary water, such as SAMSONOV N M, et al.Systems forWater Reclamation from Humidity
Condensate and Urine for Space Station.SAE Technical Paper, 1994,941536. reports
Using condensation water recovery system (the System for water reclamation from of " absorption/catalysis " technology
Humidity condensate, SWR-C) it is applied to " salvo -4 ", " salvo -6 ", " salvo -7 " space station and peace later
Number space station (the space station " Mir ") after handling the condensed water of collection, supplies drinking water, drinks for occupant
Eat making water and hot water for shower bath.GRIGORIEV A I,et al.Regeneration ofwater at space
stations.ActaAstronautica,2011,68(9–10):1567-1573. with SAMSONOV N M, et
al.Experience in Development and Operation of a Regenerative System for Water
Supply on Mir Space Station.SAE Technical Paper, 2000,2000-01-2517. report includes
Urine water reclamation system (the System for of the units such as urine collecting, chemical pretreatment, normal pressure membrane distillation and absorption/catalysis
Waterreclamation from urine, SWR-U) it is applied to Mir space station, 6000kg water has been recycled altogether, has been realized
The 80% water rate of recovery.CARTER L,et al.Status ofISS Water Management and
Recovery.proceedings of the 43rd International Conference on Environmental
Systems, Vail, CO, 14-19July 2014. reports that the U.S. uses urine processing device (vapour pressure on international space station
Contracting distilling apparatus) urine is handled, distillate enters waste water treatment system and (is filtered by rotary gas separator, particulate matter
Device, multi-medium filtering bed and catalyst oxidation reactor etc.) in uniformly handled with other waste water, qualification water outlet be used as occupant
Drinking water and electrolysis oxygen water end on April 21st, 2013, and common property goes out about 13400kg water outlets.
In conclusion the water treatment technology of space station is all made of physico-chemical process at present, water outlet is chiefly used in drinking water
Or occupant's sanitary water, and the mineral matter elements such as nitrogen, phosphorus in sewage are not recycled effectively.Following celestial body base by
In the ecological life support system of control, a large amount of plants will be introduced and recycle center by substance of plant, establish advanced regenerative life support
And substance circulation system, the waste water treatment process being combined with materialization technology using biology in controlled pulsated combustion, no
The only possible raising moisture rate of recovery reduces the physical deterioration of water treatment procedure, and can effectively recycle nitrogen, phosphorus etc. in waste water
Mineral matter element, production water can be used as quality plant nutrient solution, further increase integrated wastewater recovery utilization rate, but existing
Have in technology that there are no the apparatus and method that above-mentioned waste water treatment process may be implemented.
Invention content
The technical problem to be solved in the present invention is to provide a kind of mineral matter elements such as nitrogen, phosphorus that can effectively recycle in waste water
Closed ecological system wastewater treatment method.
The closed ecological system wastewater treatment method of the present invention, including：
Primary filter is carried out to waste water；
Homogeneous adjusting is carried out to waste water using regulating tank, the waste water after homogeneous is adjusted is pumped into anaerobic membrane biological reaction
Device；
Anaerobe is cultivated in anaerobic membrane bioreactor and makes the anaerobe to sewage purification；
Aerobic microbiological is cultivated in aerobic membrane bioreactor and makes the aerobic microbiological to sewage purification, goes to decontaminate
Organic pollution in water and ammonia nitrogen；
Using aerobic microbiological to sewage purification after, to water sterilization after purification.
The closed ecological system wastewater treatment method of the present invention, wherein it includes using hair to carry out primary filter to waste water
Filter removes the fiber substance in sewage, and carrying out homogeneous to waste water using regulating tank is adjusted including the use of regulating tank pair
Sewage carries out amount homogeneous and adjusts, and regulating time is not less than 18h.
The closed ecological system wastewater treatment method of the present invention, wherein described cultivated in anaerobic membrane bioreactor is detested
Oxygen animalcule simultaneously makes the anaerobe include to sewage purification：
Using the external tubular membrane anaerobic membrane biosystem configured with on-line oxidation reduction potential sensor and ammonia nitrogen sensor
Reactor hydrolyzes the macromolecular substances in filtered sewage, and control sewage stops 8~12h in anaerobic membrane bioreactor,
So as to be fully hydrolyzed to the sewage after primary filter.
The closed ecological system wastewater treatment method of the present invention, wherein further include：
The gas that the gas and aerobic microbiological that anaerobe generates sewage purification generate sewage purification into
The moisture that gas-water separation goes out is discharged into regulating tank by row gas-water separation, the gas absorption that gas-water separation is gone out.
The closed ecological system wastewater treatment method of the present invention, wherein further include：
With tubular membrane to anaerobic membrane bioreactor discharge water be filtered, the tubular membrane run membrane flux be 40~
60L/(m2H), mixing flow velocity is 2.5~5m/s in tubular membrane.
The closed ecological system wastewater treatment method of the present invention, wherein further include：
The anaerobic membrane bioreactor utilizes the mixed liquor to flow back from tubular membrane to the object in anaerobic membrane bioreactor
Matter carries out waterpower homogeneous stirring.
The closed ecological system wastewater treatment method of the present invention, wherein cultivated in aerobic membrane bioreactor aerobic micro-
Biology simultaneously makes the aerobic microbiological to sewage purification, and the organic pollution and ammonia nitrogen removed in sewage includes：
Organic pollution and ammonia nitrogen in sewage is removed using integrative aerobic membrane bioreactor, using configured with online
The integral type plate membrane aerobic membrane bioreactor of pH and dissolved oxygen sensor, control dwell time of sewage are 12~14h, are completed
The degradation of organic pollutants is gone out to anaerobic membrane bioreactor and is nitrate nitrogen by mineralized nitrogen.
The closed ecological system wastewater treatment method of the present invention, wherein the operation of the plate membrane of aerobic membrane bioreactor
8~12L/ of membrane flux (m2·h)。
The closed ecological system wastewater treatment method of the present invention, wherein further include being added into aerobic membrane bioreactor
To supplement the deficiency of influent alkalinity, saleratus is added a certain amount of saleratus with solution state, according to online pH measurement data
Control plus the startup and stopping of alkali pump.
The closed ecological system wastewater treatment method of the present invention, wherein it is aerobic to utilize oxygen supply wind turbine to be used for draw air
Microorganism supplies oxygen, and is washed away to plate membrane using discharge gas in wind turbine extraction aerobic membrane bioreactor is washed away, aerobic film
Discharge gas is recycled in aerobic membrane bioreactor and between washing away wind turbine in bioreactor.
The closed ecological system wastewater treatment method of the present invention, wherein further include：At regular intervals, it is returned by sludge
Sludge reflux in aerobic membrane bioreactor to anaerobic membrane bioreactor is carried out digestion decomposition by stream pump.
The closed ecological system wastewater treatment method of the present invention, wherein after purification after water sterilization, water after purification is supervised in real time
It surveys, monitoring project includes：PH value, turbidity, ammonia nitrogen and TOC.
The closed ecological system wastewater treatment method of the present invention, wherein the suction used in gas absorption for going out gas-water separation
Attached dose is granular activated carbon.
Biotechnology and membrane separation technique are coupled by technical scheme of the present invention, greatly reduce the sky of system occupancy
Between, it provides independent existence for anaerobe and aerobic microbiological and inhabites space, effectively increase functional microorganism activity
With contaminant degradation effect, while overall process keep it is closed, can gas discharged to biological treatment process be collected purification,
Eliminate secondary pollution.
Description of the drawings
Fig. 1 is the structural schematic diagram of the closed ecological system wastewater treatment equipment of the present invention.
In figure：1 primary filter, 2 regulating tanks, 3 intake pumps, 4 anaerobic membrane bioreactors, 5 circulating pumps, 6 tubular membranes
Wind turbine, 12 sludge refluxes are washed away in component, 7 aerobic membrane bioreactors, 8 plate film assemblies, 9 self priming pumps, 10 oxygen supply wind turbines, 11
Pump, 13 disinfection units, 14 go out water tank, 15 lye storage tanks, 16 plus alkali pump, 17 gas purification units.
Specific implementation mode
As shown in Figure 1, the closed ecological system wastewater treatment equipment of the present invention, including：
Primary filter 1 for carrying out primary filter to waste water；
Regulating tank passes through piping connection with primary filter；
For cultivating anaerobe and making anaerobic membrane bioreactor 4 of the anaerobe to sewage purification, with adjusting
Water tank passes through piping connection；
Tubular membrane component 6 for being filtered to anaerobic membrane bioreactor discharge water, with anaerobic membrane bioreactor
Pass through piping connection；
For cultivating aerobic microbiological and making aerobic membrane bioreactor 7 of the aerobic microbiological to sewage purification, with tubular type
Membrane module passes through piping connection；
Go out water tank 14 for water after accommodating the purification of aerobic membrane bioreactor discharge, with aerobic membrane bioreactor
7 pass through piping connection；
The closed ecological system wastewater treatment equipment of the present invention, wherein further include：
First disinfection unit, the second disinfection unit, the first disinfection unit, the second disinfection unit are respectively arranged at out water tank
Water inlet and water outlet.
The closed ecological system wastewater treatment equipment of the present invention, wherein further include：
The sludge outlet of aerobic membrane bioreactor is connect with anaerobic membrane bioreactor by sludge pipe, is set on sludge pipe
It is equipped with sludge reflux pump 12.
The closed ecological system wastewater treatment equipment of the present invention, wherein further include：
Lye storage tank 15, lye storage tank are connect by alkali liquor pipe with aerobic membrane bioreactor, are provided with and are added on alkali liquor pipe
Alkali pump 16.
The closed ecological system wastewater treatment equipment of the present invention, wherein anaerobic membrane bioreactor and aerobic membrane bioreaction
Device is answered to be connect respectively with gas purification units by pipeline, gas purification units include gas-water separation part and gas adsorption section
Point, anaerobic membrane bioreactor connects gas-water separation part, gas-water separation portion by pipeline respectively with aerobic membrane bioreactor
Divide and connect by return pipe with regulating tank, gas outlet and the gas absorption part of gas-water separation part pass through piping connection, gas
The gas outlet of body absorbed portion is connect with system exhaust pipe.
The closed ecological system wastewater treatment equipment of the present invention, wherein further include：
Be provided with two sets of aerating pipelines and plate film assembly 8 in aerobic membrane bioreactor, two sets of aerating pipelines respectively with
It supplies oxygen wind turbine 10 and washes away wind turbine 11 by piping connection, oxygen supply wind turbine is that aerobic microbiological supplies oxygen for draw air, is washed away
The air inlet of wind turbine, by piping connection, washes away wind turbine for the extraction system row after gas and water separator with gas purification units
Gas washes away plate film assembly.
The closed ecological system wastewater treatment equipment of the present invention, wherein further include control system, control system includes control
Device, liquid level sensor, pH sensor, ORP sensors, dissolved oxygen sensor, ammonia nitrogen sensor, turbidity transducer and TOC are passed
Sensor, liquid level sensor, pH sensor, ORP sensors, dissolved oxygen sensor, ammonia nitrogen sensor, turbidity transducer and TOC
Sensor is respectively arranged at anaerobic membrane bioreactor, aerobic membrane bioreactor and goes out in water tank, liquid level sensor, pH value
Sensor, ORP sensors, dissolved oxygen sensor, ammonia nitrogen sensor, turbidity transducer and TOC sensors pass through transmitter and control
Device connection processed.
The closed ecological system wastewater treatment equipment of the present invention, wherein primary filter 1 includes internal layer and outer layer, outer layer
For Stainless Steel Shell, internal layer is detachable stainless steel filtering net, 2~4mm of mesh diameter, and internal layer is connected to outer layer by short tube.
The closed ecological system wastewater treatment equipment of the present invention, wherein tubular membrane component 6 is inner pressed ultrafiltration or microfiltration membranes
Component.
The closed ecological system wastewater treatment equipment of the present invention, wherein primary filter 1, regulating tank 2, anaerobic membrane life
Object reactor 4, disinfection unit 13, goes out water tank 14, lye storage tank 15 and gas purification units 17 at aerobic membrane bioreactor 7
It is closed structure.
Membrane bioreactor is the typical construction equipment that the biology in wastewater treatment and reuse field is combined with materialization technology.Film
Bioreactor floor space is small, nitrification efficiency is high, stable effluent quality, excess sludge production are low, is particularly suitable for closed life
Sewage disposal in state system.
The present invention relates to a kind of wastewater treatment of closed ecological system and reclamation sets.The closed ecological system of the present invention is useless
Biotechnology and membrane separation technique are coupled by water treatment facilities, greatly reduce system the space occupied, are anaerobe
Independent existence is provided with aerobic microbiological and inhabites space, effectively increases functional microorganism activity and contaminant degradation effect
Fruit, while overall process keeps closed, can gas discharged to biological treatment process be collected purification, elimination secondary pollution.
The closed ecological system wastewater treatment equipment of the present invention, wherein regulating tank 2 and anaerobic membrane bioreactor 4 it
Between be provided with intake pump 3.Anaerobic membrane bioreactor 4 is connect by circulating pump 5 with tubular membrane component 6.The end of tubular membrane component 6
Mouth includes the production mouth of a river and circulation port, wherein the production mouth of a river is connect by pipeline with aerobic membrane bioreactor 7, circulation port passes through pipeline
It is connect with anaerobic membrane bioreactor 4.Plate film assembly 8 is built in aerobic membrane bioreactor 7, by self priming pump 9 with disappear
Malicious unit 13 connects.
The complete mix flow of for the benefit of hydraulic mixing of anaerobic membrane bioreactor 4, mixed-liquor return mouth are located at anti-
Answer device operation liquid level or less.Wind turbine draw air is supplied oxygen to supply oxygen for aerobic microbiological.Wind turbine is washed away to extract from gas and water separator
System exhaust washes away plate film assembly.
First disinfection unit, the second disinfection unit are two individual ultraviolet ray disinfectors, are located at out water tank 14
Inlet and outlet.
The adsorbent that gas purification units 17 use is granular activated carbon.
The closed ecological system wastewater treatment equipment of the present invention can determine reactor totality according to the requirement of influent quality
Product.By hydrolysis acidification characteristic and COD, ammonia nitrogen loading, anaerobic membrane bioreactor 4 and aerobic membrane bioreactor 7 is respectively configured
Volume.Anaerobe and aerobic microbiological grow enrichment at respectively suitable pH, HRT and load circumstance respectively, improve
Microbial activity.By monitoring pH in aerobic membrane bioreactor 7 on-line and going out ammonia nitrogen value in water tank 14, system alkali is adjusted
Reagent dosage is spent, ensures stabilization of the system to the removal effect of ammonia nitrogen and water outlet pH value.After the technical finesse of the present invention,
Organic matter in closed ecological system waste water is efficiently removed, while nitrogen is utmostly converted into nitrate nitrogen, produces water energy
Enough reach plant culture solution standard, realizes that the efficient circulation of resource in closed ecological system utilizes.The equipment of the present invention has such as
Lower advantage：
1. system automation degree is high, operation is easy to operate, and manual operation requires less, and system is integrally convenient for safeguarding.
2. membrane filtration module can effectively catching activated sludge and organic pollution, anaerobic and aerobic sludge is isolated in respectively
In separate reactors, microbial activity, effluent characteristics higher are improved.
3. online alkalinity agent adds the stabilization that control ensure that the removal effect and water outlet pH value of ammonia nitrogen.
4. by controlling suitable technological parameter and gas adsorbing device being arranged, avoid causing dirt to air in closed system
Dye.
It supplies oxygen wind turbine 5. setting is independent and washes away wind turbine, greatly reduce system fresh air demand and system external row
Tolerance.
6. being respectively provided with ultraviolet sterilizer going out water tank entery and delivery port, ensure that system water outlet micro-biology experiment is reliable.
Present invention can apply to wastewater treatment and reuses that closed ecological system and similar people occupy closed environment.
The closed ecological system wastewater treatment method of the present invention, including：
Primary filter is carried out to waste water；
Homogeneous adjusting is carried out to waste water using regulating tank, the waste water after homogeneous is adjusted is pumped into anaerobic membrane biological reaction
Device；
Anaerobe is cultivated in anaerobic membrane bioreactor and makes the anaerobe to sewage purification；
Aerobic microbiological is cultivated in aerobic membrane bioreactor and makes the aerobic microbiological to sewage purification, goes to decontaminate
Organic pollution in water and ammonia nitrogen；
Using aerobic microbiological to sewage purification after, to water sterilization after purification.
The closed ecological system wastewater treatment method of the present invention, wherein it includes using hair to carry out primary filter to waste water
Filter removes the fiber substance in sewage, and carrying out homogeneous to waste water using regulating tank is adjusted including the use of regulating tank pair
Sewage carries out amount homogeneous and adjusts, and regulating time is not less than 18h.
The closed ecological system wastewater treatment method of the present invention, wherein described cultivated in anaerobic membrane bioreactor is detested
Oxygen animalcule simultaneously makes the anaerobe include to sewage purification：
Using the external tubular membrane anaerobic membrane configured with on-line oxidation reduction potential (ORP) sensor and ammonia nitrogen sensor
The macromolecular substances in sewage after bioreactor hydrolysed filtrate, control sewage stops 8 in anaerobic membrane bioreactor~
12h, so as to be fully hydrolyzed to the sewage after primary filter.
The closed ecological system wastewater treatment method of the present invention, wherein further include：
The gas that the gas and aerobic microbiological that anaerobe generates sewage purification generate sewage purification into
The moisture that gas-water separation goes out is discharged into regulating tank by row gas-water separation, the gas absorption that gas-water separation is gone out.
The closed ecological system wastewater treatment method of the present invention, wherein further include：
With tubular membrane to anaerobic membrane bioreactor discharge water be filtered, the tubular membrane run membrane flux be 40~
60L/(m2H), mixing flow velocity is 2.5~5m/s in tubular membrane.
The closed ecological system wastewater treatment method of the present invention, wherein further include：
The anaerobic membrane bioreactor utilizes the mixed liquor to flow back from tubular membrane to the object in anaerobic membrane bioreactor
Matter carries out waterpower homogeneous stirring.
The closed ecological system wastewater treatment method of the present invention, wherein cultivated in aerobic membrane bioreactor aerobic micro-
Biology simultaneously makes the aerobic microbiological to sewage purification, and the organic pollution and ammonia nitrogen removed in sewage includes：
Organic pollution and ammonia nitrogen in sewage is removed using integrative aerobic membrane bioreactor, using configured with online
The integral type plate membrane aerobic membrane bioreactor of pH and dissolved oxygen sensor, control dwell time of sewage are 12~14h, are completed
The degradation of organic pollutants is gone out to anaerobic membrane bioreactor and is nitrate nitrogen by mineralized nitrogen.
The closed ecological system wastewater treatment method of the present invention, wherein the operation of the plate membrane of aerobic membrane bioreactor
8~12L/ of membrane flux (m2·h)。
The closed ecological system wastewater treatment method of the present invention, wherein further include being added into aerobic membrane bioreactor
To supplement the deficiency of influent alkalinity, saleratus is added a certain amount of saleratus with solution state, according to online pH measurement data
Control plus the startup and stopping of alkali pump.
The closed ecological system wastewater treatment method of the present invention, wherein it is aerobic to utilize oxygen supply wind turbine to be used for draw air
Microorganism supplies oxygen, and is washed away to plate membrane using discharge gas in wind turbine extraction aerobic membrane bioreactor is washed away, aerobic film
Discharge gas is recycled in aerobic membrane bioreactor and between washing away wind turbine in bioreactor.
The closed ecological system wastewater treatment method of the present invention, wherein further include：At regular intervals, it is returned by sludge
Sludge reflux in aerobic membrane bioreactor to anaerobic membrane bioreactor is carried out digestion decomposition by stream pump.
The closed ecological system wastewater treatment method of the present invention, wherein after purification after water sterilization, water after purification is supervised in real time
It surveys, monitoring project includes：PH value, turbidity, ammonia nitrogen and TOC.
The closed ecological system wastewater treatment method of the present invention, wherein the suction used in gas absorption for going out gas-water separation
Attached dose is granular activated carbon.
The closed ecological system wastewater treatment method of the present invention can be efficiently treated through sewage in closed-cycle system
With reuse, and the air in confined space will not be polluted, the excess sludge of generation is also extremely limited.
Compared with prior art, closed ecological system wastewater treatment method of the invention has the following advantages：
(1) (high organic concentration (the TOC of high intensity in closed system can be completed>250mg/L), high-concentration ammonia-nitrogen (NH4+-N
>700mg/L), high salinity (conductivity>The 4.0mS/cm)) processing of sanitary wastewater；
(2) transformation of microorganism is utilized to complete the Efficient Conversion of useless Organic substance in water and nitrogen, to replace materialization side
Catalysis in method processing procedure and suction-operated reduce usage amount and increment of the processing system to catalyst and adsorbent；
(3) reaction condition is mild, can efficiently carry out at normal temperatures, saves the energy needed for organic matter medium temperature catalytic process
Amount consumption；
(4) entire reaction system is enclosed system, and efflux gas passes through purified treatment, reduces to closed atmospheric environment
It influences.
Embodiment 1.
Fig. 1 is referred to, by adding quantitative liquid detergent, facial cleanser, shampoo, perfumed soap, toothpaste, edible oil, urine etc.
Substance, artificial allotment simulation closed ecological system sanitary wastewater (containing urine), pH value 7.5~8.0,250~300mg/L of TOC,
700~800mg/L of total nitrogen, 150~200mg/L of suspended matter.Waste water is placed in high-order waste water storage tank, by gravity through primary filter
1 enters regulating tank 2.After the homogeneous of 18h is adjusted, it is anti-that the waste water in regulating tank 2 is pumped into anaerobic membrane biosystem by intake pump 3
Answer device 4.Residence time of the waste water in anaerobic membrane bioreactor 4 is 8h, is entered after the filtering of external pipe type membrane module 6 aerobic
Membrane bioreactor 7.Waste water is passed through plate membrane group by 2~3mg/L of dissolved oxygen concentration in aerobic membrane bioreactor 7, self priming pump 9
Part 8 is extracted out, and water tank 14 is sent into out.Residence time of the waste water in aerobic membrane bioreactor 7 is 12h.Self priming pump is by " unlatching
4 minutes, stop 1 minute " cycling service.Sludge reflux pump is opened 2 minutes for 12 every 3 days, will be dirty in aerobic membrane bioreactor 7
Mud is back to anaerobic membrane bioreactor 4.The continuous monitoring data of 30 days steady operation periods show, system be discharged pH value 6.5~
7.0, TOC≤2mg/L, ammonia nitrogen≤1mg/L, turbidity≤5NTU, nitrite nitrogen≤1mg/L, system discharge ammonia concentration≤
0.2mg/m3(1 hourly average value) discharges concentration of hydrogen sulfide≤0.2mg/m3(1 hourly average value) discharges methane concentration≤2mg/
m3, discharge total volatile organism (TVOCs) concentration≤0.5mg/m3(8 hourly average value).
It the above is only the preferred embodiment of the present invention, it is noted that those skilled in the art are come
It says, without departing from the principle of the present invention, can also make several improvements and retouch, these improvements and modifications also should be regarded as
Protection scope of the present invention.
Claims (10)
1. a kind of closed ecological system wastewater treatment method, which is characterized in that including：
Primary filter is carried out to waste water；
Homogeneous adjusting is carried out to waste water using regulating tank, the waste water after homogeneous is adjusted is pumped into anaerobic membrane bioreactor；
Anaerobe is cultivated in anaerobic membrane bioreactor and makes the anaerobe to sewage purification；
Aerobic microbiological is cultivated in aerobic membrane bioreactor and makes the aerobic microbiological to sewage purification, is removed in sewage
Organic pollution and ammonia nitrogen；
Using aerobic microbiological to sewage purification after, to water sterilization after purification.
2. closed ecological system wastewater treatment method as described in claim 1, which is characterized in that carry out primary filter to waste water
Include using the fiber substance in hair filter removal sewage, it includes profit to carry out homogeneous adjusting to waste water using regulating tank
Amount homogeneous is carried out with regulating tank to sewage to adjust, regulating time is not less than 18h.
3. closed ecological system wastewater treatment method as claimed in claim 2, which is characterized in that described anti-in anaerobic membrane biosystem
It answers in device culture anaerobe and makes the anaerobe include to sewage purification：
Using the external tubular membrane anaerobic membrane biological reaction configured with on-line oxidation reduction potential sensor and ammonia nitrogen sensor
The macromolecular substances in sewage after device hydrolysed filtrate, control sewage stops 8~12h in anaerobic membrane bioreactor, with right
Sewage after primary filter is fully hydrolyzed.
4. closed ecological system wastewater treatment method as claimed in claim 3, which is characterized in that further include：
The gas that the gas and aerobic microbiological that anaerobe generates sewage purification generate sewage purification is into promoting the circulation of qi
Water detaches, and the moisture that gas-water separation goes out is discharged into regulating tank by the gas absorption that gas-water separation is gone out.
5. closed ecological system wastewater treatment method as claimed in claim 4, which is characterized in that further include：
Anaerobic membrane bioreactor discharge water is filtered with tubular membrane, it is 40~60L/ that the tubular membrane, which runs membrane flux,
(m2H), mixing flow velocity is 2.5~5m/s in tubular membrane.
6. closed ecological system wastewater treatment method as claimed in claim 5, which is characterized in that further include：
The anaerobic membrane bioreactor utilize the mixed liquor that flows back from tubular membrane to the substance in anaerobic membrane bioreactor into
Row waterpower homogeneous stirs.
7. closed ecological system wastewater treatment method as claimed in claim 6, which is characterized in that in aerobic membrane bioreactor
Interior culture aerobic microbiological simultaneously makes the aerobic microbiological to sewage purification, removes organic pollution and ammonia nitrogen packet in sewage
It includes：
Organic pollution and ammonia nitrogen in sewage is removed using integrative aerobic membrane bioreactor, using configured with online pH and
The integral type plate membrane aerobic membrane bioreactor of dissolved oxygen sensor, control dwell time of sewage are 12~14h, are completed to detesting
Aerobic membrane bioreactor goes out the degradation of organic pollutants and is nitrate nitrogen by mineralized nitrogen.
8. closed ecological system wastewater treatment method as claimed in claim 7, which is characterized in that aerobic membrane bioreactor
Operation 8~12L/ of membrane flux (m of plate membrane2·h)。
9. closed ecological system wastewater treatment method as claimed in claim 8, which is characterized in that further include to aerobic film biology
A certain amount of saleratus is added in reactor to supplement the deficiency of influent alkalinity, saleratus is added with solution state, according to
The control of line pH measurement data plus the startup and stopping of alkali pump.
10. closed ecological system wastewater treatment method as claimed in claim 9, which is characterized in that be used for using oxygen supply wind turbine
Draw air be aerobic microbiological oxygen supply, using wash away wind turbine extract aerobic membrane bioreactor in discharge gas to plate membrane into
Row washes away, and discharge gas is recycled in aerobic membrane bioreactor and between washing away wind turbine in aerobic membrane bioreactor；
Further include：At regular intervals, by sludge reflux pump by the sludge reflux in aerobic membrane bioreactor to anaerobic membrane
Bioreactor carries out digestion decomposition；
After purification after water sterilization, water after purification is monitored in real time, monitoring project includes：PH value, turbidity, ammonia nitrogen and TOC；
The adsorbent used in gas absorption that gas-water separation is gone out is granular activated carbon.
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