CN106892538A - The biochemical materialization combined treatment process of cassava alcohol waste water - Google Patents
The biochemical materialization combined treatment process of cassava alcohol waste water Download PDFInfo
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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
- 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
- C02F1/52—Treatment of water, waste water, or sewage by flocculation or precipitation of suspended impurities
- C02F1/5236—Treatment of water, waste water, or sewage by flocculation or precipitation of suspended impurities using inorganic agents
- C02F1/5245—Treatment of water, waste water, or sewage by flocculation or precipitation of suspended impurities using inorganic agents using basic salts, e.g. of aluminium and iron
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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
- C02F1/52—Treatment of water, waste water, or sewage by flocculation or precipitation of suspended impurities
- C02F1/54—Treatment of water, waste water, or sewage by flocculation or precipitation of suspended impurities using organic material
- C02F1/56—Macromolecular 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
- 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
- C02F2103/00—Nature of the water, waste water, sewage or sludge to be treated
- C02F2103/32—Nature of the water, waste water, sewage or sludge to be treated from the food or foodstuff industry, e.g. brewery waste waters
- C02F2103/325—Nature of the water, waste water, sewage or sludge to be treated from the food or foodstuff industry, e.g. brewery waste waters from processes relating to the production of wine products
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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
- C02F2303/24—Separation of coarse particles, e.g. by using sieves or screens
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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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- 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
- C02F3/30—Aerobic and anaerobic 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
- 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
Abstract
The present invention provides a kind of biochemical materialization combination treatment method of cassava alcohol waste water, and the method uses high efficiency anaerobic reactor+A2/ O MBR membrane biological reactor process is processed, and is comprised the following steps：Alcohol waste water is removed into the manioc waste and silt in cassava alcohol waste water first by trash rack and setting pot first.Then cassava alcohol waste water enters into high efficiency anaerobic reactor and obtains the suspended sludge layer that sludge concentration is 600~800mg/L, and water outlet CODcr scopes are made in 2000~3000mg/L through flocculation sediment.Enter into A2/ O MBR membrane bioreactor biological carbon and phosphorous removals, reaching water outlet CODcr scopes need to control in 300~400mg/L.Add compound high iron and polyacrylamide to carry out materializing strategy, discharge water outlet water quality reaching standard, wherein water outlet CODcr is less than 100mg/L.Beneficial effect is that this method processing cost is low, and treatment effect is good, and water outlet CODcr is less than 100mg/L.Sludge reflux equipment, convenient management are not set.
Description
Technical field
The present invention relates to the biochemical materialization combined treatment work of technical field of sewage, especially a kind of cassava alcohol waste water
Skill.
Background technology
It with cassava is the made edible alcohol of primary raw material that cassava alcohol is.In China, edible alcohol production is relied primarily on
The raw materials such as corn, cassava and molasses, wherein corn are still the main edible alcohol raw materials for production of China.But this several years corn valencys
Lattice are lasting surging, and amount of increase has exceeded cassava price change, so advantage of the corn alcohol relative to cassava alcohol in terms of cost
Lose.Cassava edible alcohol cost is minimum in three big raw material alcohols, and the drop of cost of material, it is that cassava system eats
Alcohol Production opens considerable profit space.
China begins to use cassava to produce alcohol from the nineties, and this several years cassava alcohols have turned into " main flow ", but produces
Waste liquid mainly use for reference the treatment technology of the alcohol effluents such as corn, wheat.During the last ten years, cassava alcohol wastewater treatment is achieved not
Few achievement, has also walked many detours.Due to the particularity of manioc waste in cassava alcohol wastewater, the country is for cassava alcohol wastewater
Treatment investment it is big, success rate is low, and on the whole, treatment effect is unsatisfactory.
Cassava alcohol waste water sand content is big, it may appear that deposited in follow-up water treatment building, reduces dischargeable capacity, drop
Low structures using volume；Reduce structures using volume；Manioc waste sinking speed is fast, and manioc waste enters water process
In structures, structures bottom can be quickly deposited on, cassava in structures is excluded by simple spoil disposal and the upper speed of raising
Slag, is certain to run into significant problem, while manioc waste is compared with difficult for biological degradation.
The CODcr of cassava alcohol waste water is up to the mg/L of 2-3 ten thousand, including suspended solid, dissolubility CODcr and colloid, organic
Thing accounts for 93%-94%, and inorganic matter accounts for 6%-7%, and the composition of organic matter is carbohydrate, next to that nitrogen-containing compound, biological
Bacterium and the undecomposed product gone out.The a large amount of lignin for wherein containing are very difficult to remove.
Crude fibre in alcohol waste water, such as cassava skin, rhizome, as insoluble CODcr in waste water, this part is insoluble
CODcr removal it is highly difficult.
The content of the invention
For the deficiency in structure in the prior art, it is an object of the invention to provide a kind of biological of cassava alcohol waste water
Change combined treatment process, the problem for processing difficult to lignin removal in cassava alcohol in the prior art is solved, and is passed through
It is especially biochemical through MBR membrane bioreactors using a kind of biochemical materialization combined treatment process of cassava alcohol waste water of this technique
Water outlet after reaction, through add a certain amount of compound high iron of certain matched proportion density and polyacrylamide by materialization composite reaction come
The CODcr in alcohol waste water is reduced, mainly the clearance of lignin is improved, worked well, water outlet CODcr is less than 100mg/L,
Technological process is simple, is easy to operation, reduces processing cost.
To achieve the above object, the technical solution adopted by the present invention is to provide a kind of biochemical materialization group of cassava alcohol waste water
Close processing method, the wastewater source in the alcohol manufactory with cassava as raw material, due to manioc waste in cassava alcohol waste water
Particularity and the lignin containing largely more difficult removal, the method use high efficiency anaerobic reactor+A2/ O MBR membrane bioreactions
Device technique is answered to be processed, the processing method includes trash rack, setting pot, the efficient anaerobic being sequentially connected using equipment
Reactor, A2/ O MBR membrane bioreactors, coagulative precipitation tank, the high efficiency anaerobic reactor are divided into mixing from top to bottom
Area, reaction zone and the functional areas of clear water zone three, include gas holder air chamber and three phase separator in high efficiency anaerobic reactor；It is described
A2/ O MBR membrane bioreactors include membrane module, membrane cisterna, and membrane module is for multilayer levels flat board film module vertically inlays
Into, upper panel film module and lower floor's flat board film module vertical pile, diaphragm and lower floor's Flat Membrane in upper panel film module
Diaphragm in module is docked one by one, and the vertical channel of gas-liquid, levels flat board diaphragm area are formed between levels Flat Membrane diaphragm
Middle baffle plate is inside provided with, the top of two water inlet pipes of correspondence forms two corresponding regions, and every layer of flat board film module is designed with film
Mozzle derived from piece water outlet, every layer of mozzle of flat board film module is imported into the water conservancy diversion house steward being connected with mozzle, water conservancy diversion
House steward's water outlet is by outlet valve and pipeline communication fluid level controller, fluid level controller control water outlet liquid level, A2/ O MBR films are given birth to
Thing reactor outlet pipe is connected with coagulative precipitation tank.
The technique of the wherein processing method is comprised the following steps：
Step one：The alcohol waste water by trash rack and setting pot, removes the cassava in cassava alcohol waste water first
Slag and silt.
Step 2：High efficiency anaerobic reactor is entered into through the cassava alcohol waste water after step one, due to being deposited in mixed zone
A large amount of anaerobic sludges are stayed, anaerobic mud bed bottom shape of the sludge with good cohesion and sedimentation function in high efficiency anaerobic reactor
Into anaerobic activated sludge layer, cassava alcohol waste water to be processed is flowed into and mixed from the anaerobic mud bed bottom of high efficiency anaerobic reactor
The anaerobic activated sludge floor for closing area carries out mixing contact, and the microorganism in sludge decomposes the organic matter in cassava alcohol waste water,
Microorganism decomposing organic matter in reaction zone sludge, on reaction zone top, due to the agitation of biogas, forms a sludge concentration smaller
Suspended sludge layer, through three phase separator separate after liquid enter into clear water zone；It is micro- in the reaction zone of high efficiency anaerobic reactor
It is biological that the organic matter in cassava alcohol is converted into biogas by hydrolysis, acidifying and methane phase three phases, anaerobic mud bed
Top is due to the suspended sludge layer that agitation one sludge concentration of formation of biogas is 600~800mg/L, the dirt in suspended sludge layer
Mud and water are ascended into the three phase separator of high efficiency anaerobic reactor together, and biogas encounters the reflecting plate of three phase separator bottom
When, the surrounding of reflecting plate is folded to, clear water zone into the gas holder air chamber of high efficiency anaerobic reactor is then passed through, concentrate on gas holder gas
Biogas in room is derived by gas holder connecting conduit, and remaining solid-liquid mixed liquor is stirred into the precipitation of three phase separator by biogas
Area, the anaerobic sludge that the sludge in high efficiency anaerobic reactor flocculates, anaerobic sludge particle gradually increases, and in Action of Gravity Field
Lower sedimentation, is precipitated on the skew wall of three phase separator, and the anaerobic sludge being precipitated on the skew wall of three phase separator is slided along skew wall
Return in the mixed zone of high efficiency anaerobic reactor, the water outlet of post processing from the settling zone overflow of three phase separator is separated with anaerobic sludge
Weir top spills into clear water zone, is then discharged out high efficiency anaerobic reactor, exists by high efficiency anaerobic reactor water outlet CODcr scopes
2000~3000mg/L.
Step 3：High efficiency anaerobic reactor water outlet enters into A2/ O MBR membrane bioreactors, carry out biological carbon and phosphorous removal,
A2/ O MBR membrane bioreactor water outlet CODcr scopes need to be controlled in 300~400mg/L；
Step 4：A2/ O MBR membrane bioreactor water outlets, into coagulative precipitation tank by adding compound high iron and poly- third
Acrylamide carries out materializing strategy, discharges water outlet water quality reaching standard, and wherein water outlet CODcr is less than 100mg/L.
Effect of the invention is：
(1) this method mainly employs high efficiency anaerobic reactor-A2/ O membrane bioreactors-coagulating sedimentation combined treatment
Technique, treatment effect is good, and water outlet CODcr is less than 100mg/L.
(2) technique uses high efficiency anaerobic reactor, it is adaptable to high concentrated organic wastewater, and water inlet BOD maximum concentrations are reachable
Tens thousand of mg/L, anaerobic bio-treated process energy consumption is low；Organic volumetric loading is high, generally 5~10kg CODcr/m3D, highest
Up to 30~50kgCODcr/m3·d；Surplus sludge volume is few；Anaerobic bacteria is low to nutritional need, resistance to poison is strong, degradable has
Machine thing molecular weight is high；Anti impulsion load ability is strong；The biogas of output is a kind of clean energy resource, and carrier, price are not filled out in Sludge Bed
It is low and can avoid because filler produce blockage problem, three phase separator is set in high efficiency anaerobic reactor, sedimentation basin is not set generally,
The sludge that precipitated area separates is come back in Sludge Bed reaction zone, can not generally set sludge reflux equipment, manager
Just.
(3) by the basis of traditional activated sludge process, using the stalling characteristic of film, effectively being cut to microorganism
The high concentration for staying, ensureing sludge, the bio-diversity and HRT of realizing sludge strain are separated with SRT, are had beneficial to degraded is various
Machine thing includes macromolecular hardly degraded organic substance, it is ensured that each pollutant is able to efficiently remove under conditions of underload.The method
The ability that microorganism removes pollutant is enhanced, treatment effect is good, and effluent quality is excellent.Meanwhile, using A2/ O MBR films are given birth to
Thing reactor process sludge age long, the advantage of high sludge concentration form dominant microflora, enhanced biological treatment effect.
(4)A2/ O MBR membrane bioreactor water outlets, are 10% compound high iron and 1.5 ‰ poly- third by adding matched proportion density
Acrylamide carries out materialization combined treatment, so that the content of the lignin in reducing alcohol waste water, so as to reach removal CODcr's
Effect, can not only greatly improve the clearance of lignin using the method, and method is simple, and processing cost is low and treatment effect
Well.
Specific embodiment
The biochemical materialization combined treatment process to cassava alcohol waste water of the invention is illustrated in conjunction with the embodiments.
The biochemical materialization combination treatment method design philosophy of cassava alcohol waste water of the invention is based on the manufacture of current alcohol
Raw material major part uses cassava, but lignin after the completion of manufacture in waste water is very difficult to remove, do not process completely just discharge to environment
Pollution is very serious.This method using biochemical materialization group technology treatment cassava alcohol waste water, technical process be efficient anaerobic+
A2/ O MBR membrane bioreactors+combination physical reaction.Mainly for lignin difficult to deal with treatment alcohol waste water, with this
PROCESS FOR TREATMENT alcohol waste water, can make the lignin removing rate in alcohol waste water be up to 75%, and process is simple, treatment effect is good
Good, water outlet CODcr is less than 100mg/L, reaches direct discharge standard.
The biochemical materialization combination treatment method of cassava alcohol waste water, the wastewater source is in the alcohol with cassava as raw material
Factory is made, due to the particularity of manioc waste in cassava alcohol waste water and the lignin containing largely more difficult removal, the method is used
High efficiency anaerobic reactor+A2/ O MBR membrane biological reactor process is processed, the processing method using equipment include according to
Secondary connected trash rack, setting pot, high efficiency anaerobic reactor, A2/ O MBR membrane bioreactors, coagulative precipitation tank.It is described enter
Water grid is used to remove the manioc waste and some bulky grain suspensions in cassava alcohol waste water, and setting pot pond is used to remove cassiri
Silt in smart waste water, high efficiency anaerobic reactor is for the organic matter in cassava alcohol waste water of degrading, A2/ O MBR membrane bioreactions
Device is answered, for carrying out biological carbon and phosphorous removal and filtering to cassava alcohol waste water, the high efficiency anaerobic reactor is from top to bottom successively
Be divided into mixed zone, gas holder air chamber and three phase separator in reaction zone and clear water zone three functional areas, and high efficiency anaerobic reactor
Composition.
The A2/ O MBR membrane bioreactors include membrane module, membrane cisterna, and membrane module is multilayer levels Flat Membrane mould
Block is vertically inlayed and is formed, upper panel film module and lower floor's flat board film module vertical pile, the diaphragm in upper panel film module
Docked one by one with the diaphragm in lower floor flat board film module, the vertical channel of gas-liquid is formed between levels Flat Membrane diaphragm, up and down
Middle baffle plate is provided with layer flat board diaphragm area, the top of two water inlet pipes of correspondence forms two corresponding regions, every layer of Flat Membrane mould
Block is designed with mozzle derived from diaphragm water outlet, and every layer of mozzle of flat board film module is imported into leading of being connected with mozzle
Stream house steward, water conservancy diversion house steward water outlet controls water outlet liquid level by outlet valve and pipeline communication fluid level controller, fluid level controller,
A2/ O MBR membrane bioreactor outlet pipes are connected with coagulative precipitation tank.
The technique of the processing method is comprised the following steps：
Step one：The alcohol waste water by trash rack and setting pot, removes the cassava in cassava alcohol waste water first
Slag and silt；
Step 2：High efficiency anaerobic reactor is entered into through the cassava alcohol waste water after step one, due to being deposited in mixed zone
A large amount of anaerobic sludges are stayed, anaerobic mud bed bottom shape of the sludge with good cohesion and sedimentation function in high efficiency anaerobic reactor
Into anaerobic activated sludge layer, cassava alcohol waste water to be processed is flowed into and mixed from the anaerobic mud bed bottom of high efficiency anaerobic reactor
The anaerobic activated sludge floor for closing area carries out mixing contact, and the microorganism in sludge decomposes the organic matter in cassava alcohol waste water,
Microorganism decomposing organic matter in reaction zone sludge, on reaction zone top, due to the agitation of biogas, forms a sludge concentration smaller
Suspended sludge layer, through three phase separator separate after liquid enter into clear water zone；It is micro- in the reaction zone of high efficiency anaerobic reactor
It is biological that the organic matter in cassava alcohol is converted into biogas by hydrolysis, acidifying and methane phase three phases, anaerobic mud bed
Top is due to the suspended sludge layer that agitation one sludge concentration of formation of biogas is 600~800mg/L, the dirt in suspended sludge layer
Mud and water are ascended into the three phase separator of high efficiency anaerobic reactor together, and biogas encounters the reflecting plate of three phase separator bottom
When, the surrounding of reflecting plate is folded to, clear water zone into the gas holder air chamber of high efficiency anaerobic reactor is then passed through, concentrate on gas holder gas
Biogas in room is derived by gas holder connecting conduit, and remaining solid-liquid mixed liquor is stirred into the precipitation of three phase separator by biogas
Area, the anaerobic sludge that the sludge in high efficiency anaerobic reactor flocculates, anaerobic sludge particle gradually increases, and in Action of Gravity Field
Lower sedimentation, is precipitated on the skew wall of three phase separator, and the anaerobic sludge being precipitated on the skew wall of three phase separator is slided along skew wall
Return in the mixed zone of high efficiency anaerobic reactor, the water outlet of post processing from the settling zone overflow of three phase separator is separated with anaerobic sludge
Weir top spills into clear water zone, is then discharged out high efficiency anaerobic reactor, exists by high efficiency anaerobic reactor water outlet CODcr scopes
2000~3000mg/L；
Step 3：High efficiency anaerobic reactor water outlet enters into A2/ O MBR membrane bioreactors, carry out biological carbon and phosphorous removal,
A2/ O MBR membrane bioreactor water outlet CODcr scopes need to be controlled in 300~400mg/L；By A2/ O MBR membrane bioreactors
Water outlet CODcr scope controls can carry out step 4 in 300~400mg/L.
Step 4：A2/ O MBR membrane bioreactor water outlets, into coagulative precipitation tank by adding compound high iron and poly- third
Acrylamide carries out materializing strategy, discharges water outlet water quality reaching standard, and wherein water outlet CODcr is less than 100mg/L.The compound high iron
Matched proportion density is 10%, and dosage is 2 ‰, and the matched proportion density of polyacrylamide is 1.5 ‰, and dosage is 1.5 ‰, water outlet
CODcr is less than 100mg/L.
The above is further described in conjunction with the embodiments.
1st, filtration treatment
Alcohol waste water by grid and setting pot, removes the manioc waste and silt in alcohol waste water first.
2nd, Anaerobic Treatment
Enter into high efficiency anaerobic reactor through the cassava alcohol waste water after step one, cassava alcohol waste water to be processed from
The anaerobic mud bed bottom inflow of high efficiency anaerobic reactor carries out mixing and contacts with the anaerobic activated sludge layer of mixed zone, in sludge
Microorganism decompose cassava alcohol waste water in organic matter, microorganism by hydrolysis, acidifying and methane phase three phases cassava
Organic matter in alcohol is converted into biogas, on anaerobic mud bed top because agitation one sludge concentration of formation of biogas is 600
The suspended sludge layer of~800mg/L, sludge and water in suspended sludge layer ascend into the three-phase of high efficiency anaerobic reactor together
In separator, when biogas encounters the reflecting plate of three phase separator bottom, the surrounding of reflecting plate is folded to, then passes through clear water zone and enter
Enter gas holder air chamber, the biogas concentrated in gas holder air chamber is derived by gas holder connecting conduit, be left solid-liquid mixed liquor by biogas
The settling zone of three phase separator is stirred into, the sludge in high efficiency anaerobic reactor in sewage flocculates, anaerobic sludge particle
Gradually increase, and settle under gravity, be precipitated on the skew wall of three phase separator, be precipitated on the skew wall of three phase separator
Anaerobic sludge slid back in the mixed zone of high efficiency anaerobic reactor along skew wall, the water outlet of post processing from three is separated with anaerobic sludge
The settling zone downflow weir top of phase separator is overflowed, and high efficiency anaerobic reactor is then discharged out, by high efficiency anaerobic reactor water outlet
CODcr scopes are in 2000~3000mg/L；
3、A2/ O MBR Membrane Bioreactor for Wastewater Treatment
Waste water after anaerobic reactor of being made laughs in above-mentioned steps two treatment enters into integrated A2/ OMBR membrane biological reactions
Device, carries out biological carbon and phosphorous removal, A2/ OMBR membrane bioreactors include integrated film case, and integrated film case is by multi-layer planar
Film module is vertically inlayed and is formed, upper panel film module and lower floor's flat board film module vertical pile, in upper panel film module
Diaphragm is docked one by one with the diaphragm in lower floor flat board film module, and the vertical channel of gas-liquid, Flat Membrane are formed between Flat Membrane diaphragm
Middle baffle plate is provided with region, the top of two water inlet pipes of correspondence forms two corresponding regions, and each flat board film module is designed with
Mozzle, diaphragm water outlet is derived, and the mozzle of each flat board film module is imported into water conservancy diversion house steward, and water conservancy diversion house steward's water outlet passes through
Outlet valve and pipeline communication fluid level controller, fluid level controller include that bowl, the floating bowl top connection Liquid level of draining are floated in draining
Device heaving pile, the floating bowl lower section of draining controls water outlet liquid level by delivery hose coupled reaction device outlet pipe by fluid level controller, needs
It is 300~400mg/L to control MBR membrane bioreactor water outlet CODcr scopes.Can now be for further processing, otherwise cannot
Reach last effect.
4th, physical reaction is combined
A2Water discharge after/O MBR membrane bioreactor mud-water separations is compound by adding subsequently into coagulative precipitation tank
High ferro and polyacrylamide carry out materializing strategy, and MBR water outlets cause the color of water or yellow due to containing lignin in water
Color, does not reach the requirement of direct discharge, in order to reduce the lignin in waste water, adds compound high iron and polyacrylamide, wherein
The matched proportion density of compound high iron is 10%, and dosage is 2 ‰, and the matched proportion density of polyacrylamide is 1.5 ‰, and dosage is
1.5 ‰, the flocculating effect to lignin is good, so as to reach water outlet CODcr less than 100mg/L, reaches direct discharge standard.
Claims (3)
1. the biochemical materialization combination treatment method of a kind of cassava alcohol waste water, the wastewater source is in the alcohol with cassava as raw material
Manufactory, due to the particularity of manioc waste in cassava alcohol waste water and the lignin containing largely more difficult removal, the method is adopted
With high efficiency anaerobic reactor+A2/ O MBR membrane biological reactor process is processed, and the processing method included using equipment
Trash rack, setting pot, high efficiency anaerobic reactor, the A being sequentially connected2/ O MBR membrane bioreactors, coagulative precipitation tank, it is described
High efficiency anaerobic reactor is divided into mixed zone, reaction zone and the functional areas of clear water zone three, high efficiency anaerobic reactor from top to bottom
Inside include gas holder air chamber and three phase separator；The A2/ O MBR membrane bioreactors include membrane module, membrane cisterna, membrane module
Vertically inlayed for multilayer levels flat board film module and formed, upper panel film module and lower floor's flat board film module vertical pile, on
Diaphragm in layer flat board film module is docked one by one with the diaphragm in lower floor flat board film module, formation between levels Flat Membrane diaphragm
The vertical channel of gas-liquid, is provided with middle baffle plate in levels flat board diaphragm area, the top formation two of two water inlet pipes of correspondence is right
Region is answered, every layer of flat board film module is designed with mozzle derived from diaphragm water outlet, and the mozzle of every layer of flat board film module converges
Enter to the water conservancy diversion house steward being connected with mozzle, water conservancy diversion house steward water outlet is by outlet valve and pipeline communication fluid level controller, liquid level
Controller controls water outlet liquid level, A2/ O MBR membrane bioreactor outlet pipes are connected with coagulative precipitation tank；
It is characterized in that：The technique of the processing method is comprised the following steps：
Step one：The alcohol waste water first by trash rack and setting pot, remove manioc waste in cassava alcohol waste water and
Silt；
Step 2：High efficiency anaerobic reactor is entered into through the cassava alcohol waste water after step one, it is big due to being retained in mixed zone
Amount anaerobic sludge, the sludge with good cohesion and sedimentation function is formed in the anaerobic mud bed bottom of high efficiency anaerobic reactor to be detested
Oxygen activity sludge blanket, cassava alcohol waste water to be processed is flowed into and mixed zone from the anaerobic mud bed bottom of high efficiency anaerobic reactor
Anaerobic activated sludge layer carry out mixing contact, microorganism in sludge decomposes the organic matter in cassava alcohol waste water, in reaction
Microorganism decomposing organic matter in area's sludge, on reaction zone top, due to the agitation of biogas, forms a sludge concentration less outstanding
Floating sludge blanket, the liquid after being separated through three phase separator enters into clear water zone；In the reaction zone microorganism of high efficiency anaerobic reactor
The organic matter in cassava alcohol is converted into biogas by hydrolysis, acidifying and methane phase three phases, on anaerobic mud bed top
Because the agitation of biogas forms the suspended sludge layer that sludge concentration is 600~800mg/L, sludge in suspended sludge layer and
Water is ascended into the three phase separator of high efficiency anaerobic reactor together, when biogas encounters the reflecting plate of three phase separator bottom,
The surrounding of reflecting plate is folded to, clear water zone into the gas holder air chamber of high efficiency anaerobic reactor is then passed through, gas holder air chamber is concentrated on
In biogas derived by gas holder connecting conduit, remaining solid-liquid mixed liquor is stirred into the precipitation of three phase separator by biogas
Area, the anaerobic sludge that the sludge in high efficiency anaerobic reactor flocculates, anaerobic sludge particle gradually increases, and in Action of Gravity Field
Lower sedimentation, is precipitated on the skew wall of three phase separator, and the anaerobic sludge being precipitated on the skew wall of three phase separator is slided along skew wall
Return in the mixed zone of high efficiency anaerobic reactor, the water outlet of post processing from the settling zone overflow of three phase separator is separated with anaerobic sludge
Weir top spills into clear water zone, is then discharged out high efficiency anaerobic reactor, exists by high efficiency anaerobic reactor water outlet CODcr scopes
2000~3000mg/L；
Step 3：High efficiency anaerobic reactor water outlet enters into A2/ O MBR membrane bioreactors, carry out biological carbon and phosphorous removal, A2/O
MBR membrane bioreactor water outlet CODcr scopes need to be controlled in 300~400mg/L；
Step 4：A2/ O MBR membrane bioreactor water outlets, into coagulative precipitation tank by adding compound high iron and polyacrylamide
To carry out materializing strategy, discharge water outlet water quality reaching standard, wherein water outlet CODcr is less than 100mg/L.
2. the biochemical materialization combination treatment method of cassava alcohol waste water according to claim 1, it is characterized in that：The step 3
In, by A2/ O MBR membrane bioreactors water outlet CODcr scope controls can carry out next step in 300~400mg/L.
3. the biochemical materialization combination treatment method of cassava alcohol waste water according to claim 1, it is characterized in that：The step 4
In the compound high iron that adds and polyacrylamide flocculated with profit, the compound high iron matched proportion density is 10%, and dosage is 2 ‰,
The matched proportion density of polyacrylamide is 1.5 ‰, and dosage is 1.5 ‰, and water outlet CODcr is less than 100mg/L.
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| CN111072228A (en) * | 2019-12-26 | 2020-04-28 | 天津膜天膜科技股份有限公司 | Treatment system and treatment process for wastewater of potato chips and potato cakes |
| CN115108688A (en) * | 2022-08-01 | 2022-09-27 | 河南省白酒质量监督检验中心 | System and method for comprehensively treating wastewater in white spirit production |
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