CN109775863A - High concentrated organic wastewater anaerobism embrane method water handling reclamation set and technique - Google Patents

High concentrated organic wastewater anaerobism embrane method water handling reclamation set and technique Download PDF

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Publication number
CN109775863A
CN109775863A CN201910166249.2A CN201910166249A CN109775863A CN 109775863 A CN109775863 A CN 109775863A CN 201910166249 A CN201910166249 A CN 201910166249A CN 109775863 A CN109775863 A CN 109775863A
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unit
water
dsnr
sewage
dbar
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左剑恶
曾凡付
高银龙
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Tsinghua University
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Tsinghua University
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    • YGENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
    • Y02TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
    • Y02EREDUCTION OF GREENHOUSE GAS [GHG] EMISSIONS, RELATED TO ENERGY GENERATION, TRANSMISSION OR DISTRIBUTION
    • Y02E50/00Technologies for the production of fuel of non-fossil origin
    • Y02E50/30Fuel from waste, e.g. synthetic alcohol or diesel

Abstract

The present invention relates to a kind of high concentrated organic wastewater anaerobism embrane method water handling reclamation set and techniques, comprising: DLIC unit, useless Organic substance in water is converted to ammonia nitrogen and recycles biogas energy;DSNR unit carries out sub- oxidation processes and nitrosation processing to be discharged to the DLIC unit, makes mineralized nitrogen nitrite in water;DBAR unit to be enriched with to the microorganism in water after the DSNR cell processing, and reacts nitrite with ammonia nitrogen and is converted into nitrogen discharge;DAMS unit, further to be filtered to the polluter in DBAR unit water outlet.The present invention uses high efficiency anaerobic reactor, and most organic matters is made to be converted into biogas, has reached the energy and has maximized recycling;The present invention uses Anammox technology and DAMS anaerobism membrane process, substantially reduces anaerobism in common process+multistage AO+ precipitating+coagulating sedimentation+filtering process flow, greatly shortens process section, therefore greatly reduce initial outlay and operating cost.

Description

High concentrated organic wastewater anaerobism embrane method water handling reclamation set and technique
Technical field
The present invention relates to high concentrated organic wastewater recycling processing technique fields more particularly to a kind of high concentrated organic wastewater to detest Oxygen water treatment by membrane reclamation set and technique.
Background technique
High concentrated organic wastewater include pharmaceuticals industry waste water, textile waste, petrochemical wastewater, coal chemical industrial waste water, The professionals waste water such as pulp and paper industry waste water, food processing wastewater and other wastewater from chemical industry.The main feature of this kind of waste water For COD high, ammonia nitrogen is high, often lacks phosphorus.Major pollutant to be treated is organic matter and ammonia nitrogen.The removal of organic matter is normal Using the anaerobism and aerobic technology in bioanalysis.Wherein Anaerobic Methods in Treating is low with its operating cost, and biogas energy etc. can be recycled Advantage is greatly developed in processing high concentrated organic wastewater field.But conventional anaerobic Process for Effluent COD high, it is difficult to remove ammonia Nitrogen, Aerobic Process for Treatment, the removal of ammonia nitrogen generally use AO technique to subsequent needs step by step.Because the removal of total nitrogen is limited by reflux ratio, And carbon source is needed, therefore its energy consumption is especially high, for high nitrogenous effluent, it usually needs the series connection of multistage AO.High concentration simultaneously When organic wastewater needs effluent reuse, conventional anaerobism adds aerobic process to be difficult to reach reuse requirement, usually needs to post-process, such as adopt With coagulating sedimentation+filtering and increase membrane treatment process section etc..It can be seen that high concentrated organic wastewater is handled using common process When requiring to reuse, technique is tediously long, and equipment is various, and operating cost is high, and system operation is unstable when seasonal variations or water quality are impacted Periodically, the waste of operating cost and the pollution of water body environment are caused.
China Patent Publication No.: CN103723891A discloses a kind of High-concentration organic wastewater treatment method and processing system System, the system is with anaerobism MBR- UF membrane group technology instead of traditional anaerobic-aerobic MBR- advanced treatment process, the anaerobism MBR subsystem is improved on existing anaerobic treatment process, by increasing retention time of sewage, improving anaerobic sludge and dirt The mixing intensity of water and the waste treatment capacity that the step is improved using the method that macromolecule filtrate reduces sludge loss, discharge Waste water in organic concentration it is higher, therefore can returning for high concentration can be obtained in the dope side of subsequent advanced treating subsystem Receive the organic matter utilized.It can be seen that the processing system has the following problems:
First, the process method step of the system is cumbersome, and process flow is long, is also easy to produce the waste of resource at runtime, The system is caused to reduce the treatment effeciency of sewage.
Second, the system is in the process of running only handled the sewage of its inside by way of standing, is needed The a large amount of time is consumed, to further reduced treatment effeciency.
Summary of the invention
For this purpose, the present invention provides a kind of high concentrated organic wastewater anaerobism embrane method water handling reclamation set and technique, to gram Take the low problem of the cumbersome caused treatment effeciency of process flow in the prior art.
On the one hand, the present invention provides a kind of high concentrated organic wastewater anaerobism embrane method water handling reclamation technique, comprising:
DLIC unit is a reactor, useless Organic substance in water is converted to ammonia nitrogen and recycles biogas energy;
DSNR unit is connected for a pond body and with the DLIC unit, carries out Asia to be discharged to the DLIC unit Oxidation processes and nitrosation processing, and make mineralized nitrogen nitrite in water;
DBAR unit is connected for a pond body and with the DSNR unit, to in water after the DSNR cell processing Microorganism be enriched with, and react nitrite with ammonia nitrogen and be converted into nitrogen discharge;
DAMS unit is connected for a pond body and with the DBAR unit, to the dirt in DBAR unit water outlet Dye substance is further filtered.
Further, it is equipped with anaerobic grain sludge in the DLIC unit, and DLIC unit bottom uses eddy flow water distribution, uses So that its internal water body rises along axial with radial vortex, and come into full contact with anaerobic grain sludge with water body.
Further, the double back stream mode that the DLIC unit selects interior reflux to combine with exteenal reflux, on return pipe Equipped with regulating valve, the upflow velocity and water body and anaerobic grain sludge of water body are controlled respectively by adjusting the aperture of regulating valve Mixing intensity.
Further, the DSNR unit is a batch-type reaction tank for being equipped with blender, is equipped with inside reaction tank DSNR bio-carrier, to be enriched with nitrococcus.
Further, the DSNR bio-carrier be specific gravity be greater than water high strength powder, with high-specific surface area with And the internal structure of suitable nitrococcus growth, to be enriched with to nitrococcus.
Further, the DBAR unit is a batch-type reaction tank for being equipped with blender, on reaction tank outlet conduit Equipped with motor-driven valve, to control water flow, DBAR bio-carrier is equipped with inside reaction tank, to the micro- life being enriched in water Object.
Further, the motor-driven valve is connected with blender, by controlling the time, so that the outlet conduit reaches To small water multifrequency time water outlet.
Further, it is bio-carrier that the DBAR bio-carrier, which is one kind, and the anaerobic ammonia oxidizing bacteria including specified amount is surplus Remaining sludge, Schrodinger's reagent and skeleton material.
Further, seperation film is equipped in the DAMS unit, to the polluter crossed in drainage.
On the other hand, the present invention provides a kind of high concentrated organic wastewater anaerobism embrane method water handling reclamation technique, comprising:
Step 1: sewage being passed through the DLIC unit, the COD in sewage is removed by reactor, and organic nitrogen is converted For ammonia nitrogen, to provide prerequisite for subsequent nitrosation reaction;
Step 2: sewage flows into the DSNR unit after the DLIC cell processing, and DSNR unit starts to carry out sewage Stirring, and replace conversion with anoxic by aerobic in dissolved oxygen content in control sewage, pH value and DSNR unit, it will be dirty Mineralized nitrogen in water is nitrite, at the same using the DSNR bio-carrier in DSNR unit to the nitrococcus in sewage into Row enrichment and sedimentation;
Step 3: sewage flows into the DBAR unit after the DSNR cell processing, and DBAR unit is by Nitrite In Polluted Water nitric acid Salt is reacted with ammonia nitrogen is converted into nitrogen discharge, while the microorganism in sewage is enriched with and being sunk using DBAR bio-carrier Drop;
Step 4: sewage flows into the DAMS unit after the DBAR cell processing, and DAMS unit can be to the dirt in sewage Dye substance is further degraded, and makes sewage by special membrane after degradation, reaches water outlet the filtering of sewage by film Reuse standard.
Compared with prior art, the beneficial effects of the present invention are the processing equipments that the present invention passes through a variety of independent researches With effective combination of technology, high concentrated organic wastewater is made to can reach reuse requirement after Anaerobic Treatment.The present invention, which uses, efficiently to be detested Oxygen reactor makes most organic matters be converted into biogas, has achieved the purpose that the energy maximizes recycling;Ammonia nitrogen in the present invention Removal uses Anammox technology, and water outlet uses DAMS anaerobism membrane process, substantially reduces anaerobism in common process+multistage AO + precipitating+coagulating sedimentation+filtering process flow, greatly shortens process section;And due to reduce cumbersome aerobic process and Advanced treatment process, therefore greatly reduce initial outlay and operating cost;Meanwhile the present invention uses the DAMS anaerobism of low energy consumption Membrane technology, realizing high concentrated organic wastewater does not have aerobic section and complicated advanced treatment process section to can reach reuse yet and want The purpose asked.
Further, eddy flow water distribution is used in the DLIC unit, by making internal water body along axial and radial vortex It rises, in this way, the anaerobic grain sludge will come into full contact with water body, solving muddy water in traditional water distribution manner is in laminar flow Rise and the problem of undermixing.
In particular, using the interior double back stream mode for flowing back and being combined with exteenal reflux in the DLIC unit, and on return pipe Regulating valve is set, controls the upflow velocity and water body and anaerobic grain sludge of water body respectively by adjusting the aperture of regulating valve Mixing intensity, thus the dilution for making high concentrated organic wastewater obtain 20 times or more so that the DLIC unit have it is stronger Anti- load impact ability.
Further, the DSNR unit and DBAR unit select batch-type reaction tank, in this way, transporting in Unit two When row, the reaction condition in pond can be preferably controlled, so that the environment of more appropriate biological carrier is created, to improve the work Treatment effeciency of the skill to high concentrated organic wastewater.
In particular, blender is further respectively had in above-mentioned Unit two, in this way, work as Unit two at runtime, internal Bio-carrier can be sufficiently mixed with the microorganism in water, to further increase the technique to high concentrated organic wastewater Treatment effeciency.
Further, it is equipped with DSNR bio-carrier in the DSNR unit, there is the inside of suitable nitrococcus growth Structure, in this way, the DSNR can be enriched with well the nitrococcus in water, to reduce the loss of nitrococcus.
In particular, the specific gravity of the DSNR bio-carrier is greater than water, in this way, being able to carry out very after it absorbs nitrococcus Good sedimentation, to reach the rapid removal to nitrococcus in water.
Further, DBAR bio-carrier is equipped in the DBAR unit, in this way, the DBAR is at runtime, it is described DBAR carrier can be enriched with well the microorganism in water, to further increase the technique to high concentration organic waste The treatment effeciency of water.
In particular, the motor-driven valve being connected with the blender is additionally provided on the DBAR unit outlet pipe, by the electricity The runing time of dynamic valve is configured, and the DBAR unit can be made to reach small water multifrequency time water outlet, to guarantee the work The continuity of water flow and the stability of subsequent cell, improve the operational efficiency of the technique in skill.
Further, it is equipped with anaerobic membrane in the DAMS unit, in this way, substituting sedimentation basin by using anaerobic membrane, can make Aqueous suspension and COD are dropped to very low out, reach reuse requirement, meanwhile, anaerobic membrane has antipollution, what resistance to flushing and service life were grown Feature, while being able to carry out prolonged use, stability with higher further improves the technique to highly concentrated Spend the treatment effeciency of organic wastewater.
Detailed description of the invention
Fig. 1 is the process flow chart of high concentrated organic wastewater anaerobism embrane method water handling reclamation technique of the present invention.
Specific embodiment
In order to which objects and advantages of the present invention are more clearly understood, the present invention is further retouched below with reference to embodiment It states;It should be appreciated that specific embodiment described herein is used only for explaining the present invention, it is not intended to limit the present invention.
Below in conjunction with attached drawing, the forgoing and additional technical features and advantages are described in more detail.
Refering to Figure 1, it is the work of high concentrated organic wastewater anaerobism embrane method water handling reclamation technique of the present invention Skill flow chart, including DLIC unit, DSNR unit, DBAR unit and DAMS unit.Wherein, the process flow includes:
Step 1: sewage being passed through the DLIC unit, the COD in sewage is removed by reactor, and organic nitrogen is converted For ammonia nitrogen, to provide prerequisite for subsequent nitrosation reaction;
Step 2: sewage flows into the DSNR unit after the DLIC cell processing, and DSNR unit starts to carry out sewage Stirring, and replace conversion with anoxic by aerobic in dissolved oxygen content in control sewage, pH value and DSNR unit, it will be dirty Mineralized nitrogen in water is nitrite, at the same using the DSNR bio-carrier in DSNR unit to the nitrococcus in sewage into Row enrichment and sedimentation;
Step 3: sewage flows into the DBAR unit after the DSNR cell processing, and DBAR unit is by Nitrite In Polluted Water nitric acid Salt is reacted with ammonia nitrogen is converted into nitrogen discharge, while the microorganism in sewage is enriched with and being sunk using DBAR bio-carrier Drop;
Step 4: sewage flows into the DAMS unit after the DBAR cell processing, and DAMS unit can be to the dirt in sewage Dye substance is further degraded, and makes sewage by special membrane after degradation, reaches water outlet the filtering of sewage by film Reuse standard.
Specifically, the DLIC unit is moral indigo plant internal-circulation anaerobic reactor unit (DeLan in the step 1 Internal Circulation anaerobic reactor), it is the very big cylindrical reactor of a ratio of height to diameter, is reacting It is equipped with anaerobic grain sludge inside device, is equipped with eddy flow water distribution in reactor bottom, the reactor uses interior reflux and exteenal reflux The double back stream mode combined, and regulating valve is set on return tank.
After waste water enters the DLIC unit, water body eddy flow can rise both axially and radially in reactor, so that anaerobism Granule sludge is sufficiently mixed and contacts with water body, to remove COD in waste water and convert ammonia nitrogen for organic nitrogen, to be subsequent Nitrosation reaction provides prerequisite.The regulating valve can adjust suitable regurgitant volume according to different demands, thus more effectively Control water body upflow velocity and anaerobic grain sludge and water body mixing intensity.
Specifically, the DSNR unit is moral indigo plant batch-type bio-carrier nitrosation reactor list in the step 2 First (Delan Sequencing batch biological Nitrosation Reaction) is equipped with blender for one Batch-type reaction tank, is equipped with DSNR bio-carrier in reaction tank, and the DSNR bio-carrier appearance is high strength powder, specific gravity Greater than water, the internal structure grown with very high specific surface area and suitable nitrococcus.
After the DLIC handles sewage, by sewage transport after processing to the DSNR unit, the DSNR Unit uses continuum micromeehanics mode, blender is automatically turned on after the completion of draining, and the dissolved oxygen in water is controlled in 1.0- 2.0mg/L, pH maintain 8.0, and DSNR bio-carrier is enriched with the Nitrosomas in water body in reaction tank, and after enrichment Start to settle, the blender controls sub- oxidation and mixing time according to mineralized nitrogen rate, when mineralized nitrogen rate reaches 55% Stop sub- oxidative system and stirring, it is quiet it is 15 minutes heavy after start to drain, processed waste water is delivered to next unit.
Specifically, the DBAR unit is moral indigo plant bio-carrier anaerobic ammonia oxidation reactor unit in the step 3 (Delan Biological Anaerobic ammonia oxidation reactor), the sequence batch for being equipped with blender for one Formula reaction tank, is equipped with DBAR bio-carrier in reaction tank, and the DBAR bio-carrier passes through anaerobic ammonia oxidizing bacteria excess sludge And Schrodinger's reagent and other skeleton materials are prepared, to the microorganism in absorption effluent.The DBAR unit water outlet Motor-driven valve is equipped at pipeline, to control the water yield of the DBAR.
When sewage is after the DSNR cell processing, into the DBAR unit, the DBAR unit uses continuum micromeehanics Mode automatically turns on stirring after the completion of draining, and water outlet is controlled by the motor-driven valve on outlet conduit, by connecting with blender Lock, setting time control, small water multifrequency time water outlet, to guarantee not influencing the operation of subsequent cell.
Specifically, the DAMS unit is moral indigo plant anaerobism film-separation biological reactor unit in the step 4 (Delan Anaerobic Membrane Separation Bioreactor) is an anaerobic technology and membrane filtration technique phase In conjunction with anaerobic membrane bioreactor, hydrophily PTFE special membrane is internally provided with, to further decrease the DBAR unit Polluter in water outlet, and by film filtration, so that water outlet is reached reuse requirement.
It, can be by sewage transport after processing to the DAMS unit, DAMS after the DSNR unit handles sewage Hydrophily PTFE special membrane in unit can be filtered sewage, the estimated suspended matter of COD in sewage be filtered out, to make Sewage reaches reuse requirement after filter.
After technique of the present invention is compared with common process, it can be concluded that
1. DLIC unit described in engineering reaches 91.2%, i.e., in sewage to the average removal rate of COD in sewage 91.2% organic matter is converted into biogas energy after Anaerobic Treatment and recycles;Effluent reuse rate is greater than 95% simultaneously.Therefore originally Technique recycles valuable water resource while recycling the energy.
2. total nitrogen is down to 9mg/L, process from 255mg/L by conventional treatment process are as follows: IC+A+O+A+O+ precipitating+coagulation is heavy Shallow lake+filtering, and this process flow are as follows: DLIC+DSNR+DBAR+DAMS, process unit of the present invention foreshorten to half, Process flow is greatly reduced.
Since nitrogen removal rate formula is η=n ÷ (n+1) in AO technique, n be return sludge ratio and return current ratio of the mixed liquid it With, i.e., when total reflux ratio n is 400%, nitrogen removal rate 80%.Nitrogen removal rate is only when total reflux ratio is 1000% 90.9%.Therefore for high nitrogenous effluent, when in order to make total nitrogen drop to reduced levels, it is necessary to use Multilevel A/O Technology, technique is superfluous It is long.
3. construction investment: this technique construction investment compared with common process saves 45%.
4. equipment investment: this technique reduces Aeration fan and aeration tube, return-flow system, dosing compared with common process System stirs and scrapes mud system etc..Increase bio-carrier and anaerobic membrane etc..Equipment investment slightly reduces after synthesis.
5. operating cost: this technique reduces aeration energy consumption, nitrification liquid reflux pump energy consumption, dosing compared with common process Energy consumption and medicine consumption etc., integrated operation cost savings 76%.Just correspond to the 1/4 of common process.
In conclusion 45% or more initial outlay can be saved using technique of the present invention, operating cost 76% is saved.
Meanwhile by using high concentrated organic wastewater anaerobism embrane method water handling reclamation technique, high concentrated organic wastewater is main Polluter index is lower than " urban sewage reutilization-urban reclaimed water water quality ".
So far, it has been combined preferred embodiment shown in the drawings and describes technical solution of the present invention, still, this field Technical staff is it is easily understood that protection scope of the present invention is expressly not limited to these specific embodiments.Without departing from this Under the premise of the principle of invention, those skilled in the art can make equivalent change or replacement to the relevant technologies feature, these Technical solution after change or replacement will fall within the scope of protection of the present invention.
The above description is only a preferred embodiment of the present invention, is not intended to restrict the invention;For those skilled in the art For member, the invention may be variously modified and varied.All within the spirits and principles of the present invention, it is made it is any modification, Equivalent replacement, improvement etc., should all be included in the protection scope of the present invention.

Claims (10)

1. a kind of high concentrated organic wastewater anaerobism embrane method water handling reclamation set characterized by comprising
DLIC unit is a reactor, useless Organic substance in water is converted to ammonia nitrogen and recycles biogas energy;
DSNR unit is connected for a pond body and with the DLIC unit, carries out sub- oxidation to be discharged to the DLIC unit Processing and nitrosation processing, and make mineralized nitrogen nitrite in water;
DBAR unit is connected for a pond body and with the DSNR unit, to micro- in water after the DSNR cell processing Biology is enriched with, and is reacted nitrite with ammonia nitrogen and be converted into nitrogen discharge;
DAMS unit is connected for a pond body and with the DBAR unit, to the pollutant in DBAR unit water outlet Matter is further filtered.
2. high concentrated organic wastewater anaerobism embrane method water handling reclamation set according to claim 1, which is characterized in that described Anaerobic grain sludge is equipped in DLIC unit, and DLIC unit bottom uses eddy flow water distribution, to make its internal water body along axial Rise with radial vortex, and comes into full contact with anaerobic grain sludge with water body.
3. high concentrated organic wastewater anaerobism embrane method water handling reclamation set according to claim 2, which is characterized in that described The double back stream mode that DLIC unit selects interior reflux to combine with exteenal reflux, is equipped with regulating valve, on return pipe by adjusting tune The aperture of valve is saved to control the upflow velocity of water body and the mixing intensity of water body and anaerobic grain sludge respectively.
4. high concentrated organic wastewater anaerobism embrane method water handling reclamation set according to claim 1, which is characterized in that described DSNR unit is a batch-type reaction tank for being equipped with blender, DSNR bio-carrier is equipped with inside reaction tank, to be enriched with Asia Nitrifier.
5. high concentrated organic wastewater anaerobism embrane method water handling reclamation set according to claim 4, which is characterized in that described DSNR bio-carrier is the high strength powder that specific gravity is greater than water, in high-specific surface area and the growth of suitable nitrococcus Portion's structure, to be enriched with to nitrococcus.
6. high concentrated organic wastewater anaerobism embrane method water handling reclamation set according to claim 1, which is characterized in that described DBAR unit is a batch-type reaction tank for being equipped with blender, motor-driven valve is equipped on reaction tank outlet conduit, to control out Water flow is equipped with DBAR bio-carrier, to the microorganism being enriched in water inside reaction tank.
7. high concentrated organic wastewater anaerobism embrane method water handling reclamation set according to claim 6, which is characterized in that described Motor-driven valve is connected with blender, by controlling the time, so that the outlet conduit reaches small water multifrequency time water outlet.
8. high concentrated organic wastewater anaerobism embrane method water handling reclamation set according to claim 6, which is characterized in that described DBAR bio-carrier is that one kind is bio-carrier, anaerobic ammonia oxidizing bacteria excess sludge, Schrodinger's reagent and bone including specified amount Frame material.
9. high concentrated organic wastewater anaerobism embrane method water handling reclamation set according to claim 1, which is characterized in that described Seperation film is equipped in DAMS unit, to the polluter crossed in drainage.
10. a kind of high concentrated organic wastewater anaerobism embrane method water handling reclamation technique as described in claim 1, which is characterized in that Include:
Step 1: sewage being passed through the DLIC unit, the COD in sewage is removed by reactor, and convert ammonia for organic nitrogen Nitrogen, to provide prerequisite for subsequent nitrosation reaction;
Step 2: sewage flows into the DSNR unit after the DLIC cell processing, and DSNR unit starts to stir sewage It mixes, and replaces conversion with anoxic by aerobic in dissolved oxygen content in control sewage, pH value and DSNR unit, by sewage In mineralized nitrogen be nitrite, while the nitrococcus in sewage is carried out using the DSNR bio-carrier in DSNR unit Enrichment and sedimentation;
Step 3: sewage flows into the DBAR unit after the DSNR cell processing, DBAR unit by Nitrite In Polluted Water nitrate with Ammonia nitrogen reaction is converted into nitrogen discharge, while the microorganism in sewage is enriched with and being settled using DBAR bio-carrier;
Step 4: sewage flows into the DAMS unit after the DBAR cell processing, and DAMS unit can be to the pollutant in sewage Matter is further degraded, and makes sewage by special membrane after degradation, so that water outlet is reached reuse the filtering of sewage by film Standard.
CN201910166249.2A 2019-03-06 2019-03-06 High concentrated organic wastewater anaerobism embrane method water handling reclamation set and technique Pending CN109775863A (en)

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Application publication date: 20190521