CN107698109A - The processing method and system of a kind of dyeing waste water - Google Patents
The processing method and system of a kind of dyeing waste water Download PDFInfo
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- CN107698109A CN107698109A CN201711181860.XA CN201711181860A CN107698109A CN 107698109 A CN107698109 A CN 107698109A CN 201711181860 A CN201711181860 A CN 201711181860A CN 107698109 A CN107698109 A CN 107698109A
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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
- C02F1/28—Treatment of water, waste water, or sewage by sorption
- C02F1/283—Treatment of water, waste water, or sewage by sorption using coal, charred products, or inorganic mixtures containing them
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- C—CHEMISTRY; METALLURGY
- C02—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
- C02F—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
- C02F1/00—Treatment of water, waste water, or sewage
- C02F1/44—Treatment of water, waste water, or sewage by dialysis, osmosis or reverse osmosis
- C02F1/441—Treatment of water, waste water, or sewage by dialysis, osmosis or reverse osmosis by reverse osmosis
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- C—CHEMISTRY; METALLURGY
- C02—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
- C02F—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
- C02F1/00—Treatment of water, waste water, or sewage
- C02F1/44—Treatment of water, waste water, or sewage by dialysis, osmosis or reverse osmosis
- C02F1/444—Treatment of water, waste water, or sewage by dialysis, osmosis or reverse osmosis by ultrafiltration or microfiltration
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- C—CHEMISTRY; METALLURGY
- C02—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
- C02F—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
- C02F1/00—Treatment of water, waste water, or sewage
- C02F1/46—Treatment of water, waste water, or sewage by electrochemical methods
- C02F1/469—Treatment of water, waste water, or sewage by electrochemical methods by electrochemical separation, e.g. by electro-osmosis, electrodialysis, electrophoresis
- C02F1/4693—Treatment of water, waste water, or sewage by electrochemical methods by electrochemical separation, e.g. by electro-osmosis, electrodialysis, electrophoresis electrodialysis
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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
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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
- C02F1/66—Treatment of water, waste water, or sewage by neutralisation; pH adjustment
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- C—CHEMISTRY; METALLURGY
- C02—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
- C02F—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
- C02F2103/00—Nature of the water, waste water, sewage or sludge to be treated
- C02F2103/30—Nature of the water, waste water, sewage or sludge to be treated from the textile industry
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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
- C02F3/02—Aerobic processes
- C02F3/12—Activated sludge processes
- C02F3/1236—Particular type of activated sludge installations
- C02F3/1268—Membrane bioreactor systems
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- 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
- C02F3/28—Anaerobic digestion processes
- C02F3/2846—Anaerobic digestion processes using upflow anaerobic sludge blanket [UASB] reactors
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Abstract
A kind of processing method of dyeing waste water, it includes pH value regulating step, anaerobic reaction step, aerobic biochemical reactions steps, coagulating sedimentation step, hydrolysis acidification step, MBR processing steps, advanced treating step, wherein described pH value regulating step by the higher waste water of alkalescence by the way of being filled with CO2 between pH to 68 is down to, to meet requirement of the anaerobic species to pH in anaerobic reaction step；The anaerobic reaction step is completed by IC anaerobic reactions tower；The advanced treating step includes decolorization.Relative to prior art, the COD concentration of draining can be further reduced, water outlet SS is close to 0, in the case where meeting the process conditions of anaerobic reaction, keeps the activity of the anaerobic species in IC anaerobic reaction towers, realizes zero-emission of dyeing waste water and other effects.
Description
Technical field
The present invention relates to a kind of water technology, especially a kind of processing method and system of dyeing waste water.
Background technology
Dyeing waste water complicated components, often containing a variety of dyestuffs, colourity is high, strong toxicity, and degradability is poor, and concentration height,
Wastewater flow rate is big, is one of industrial wastewater difficult to deal with.Traditional handling process is combined using medicament coagulation with biochemical treatment
Technological process.Shown in Figure 1, it includes coagulative precipitation tank, UASB anaerobic reactors, sedimentation basin, hydrolysis acidification pool, anaerobism
Biochemical reactor and second pond, it is emitted into municipal wastewater pipeline.It is dense with COD in order to reduce the pH value of desized wastewater in the technique
Degree, substantial amounts of ferrous sulfate can be put into waste water, can not only produce a large amount of sludge, ferrous sulfate can also cause to water body in itself
Secondary pollution.As patent of invention CN104478139B, CN101955282B is exactly with ferrous sulfate regulation pH value and coagulation occurs
Precipitation.The desized wastewater basicity of printing and dyeing workshop is higher, pH value 9~12, and the technique of anaerobic reactor, it is desirable to waste water pH value 6-8
Between, adjustment pH value needs substantial amounts of acid or ackd salt (such as ferrous sulfate).If with sulfuric acid and waste water, will make in waste water
Sulfuric acid concentration increases to 8000mg/L, and high concentration sulphate withers away the anaerobic species made in anaerobic reactor.If use hydrochloric acid
Neutralizing waste water will make chlorine ion concentration in waste water be up to more than 10000mg/L, and too high chlorine ion wastewater is to subsequent treatment list
Stainless steel equipment in member causes heavy corrosion, and chlorion is difficult to separate, and can not eventually become waste product by factory's reuse.This
Outside, technique as shown in Figure 1, the draining COD concentration after processing still have 300 or so, it is impossible to reach in line or recycle-water mark
It is accurate.
The content of the invention
In summary, in order to solve the above-mentioned technical problem, it is an object of the invention to provide a kind of processing side of dyeing waste water
Method and processing system, draining COD concentration is reduced, improve draining quality, do not cause secondary dirt to water body in whole technical process
Dye, in the case where meeting the process conditions of anaerobic reaction, keep the bioactivity of the anaerobic species in anaerobic reactor.Its
It is secondary, the zero-emission of dyeing waste water is realized, directly reaches the standard of recycle-water.
In order to realize above-mentioned technical purpose, the technical solution adopted by the present invention includes：
A kind of processing method of dyeing waste water, it includes：
PH value regulating step, anaerobic reaction step, aerobic biochemical reactions steps, coagulating sedimentation step, hydrolysis acidification step,
MBR processing steps, advanced treating step, wherein the pH value regulating step is given up alkaline higher by the way of CO2 is filled with
Water is down between pH to 6-8, to meet requirement of the anaerobic species to pH in anaerobic reaction step；The anaerobic reaction step passes through
IC anaerobic reactions tower is completed；The advanced treating step includes decolorization.
IC anaerobic reaction towers are internal-circulation anaerobic reactor, are substantially in series by 2 layers of UASB reactors.Waste water is from anti-
Answer the bottom of tower through water-distributing device even into and flowing up through the 1st anaerobic reaction area and the second anaerobic reaction area, 2 three-phases
Separator, finally enter the settling zone on the up flow anaerobic sludge blanket reactor top of the second anaerobic reaction area；It is dirty in mixed liquor
Mud returns to reaction zone in Action of Gravity Field autoprecipitation area through upper strata three-phase separation area, and caused biogas is then arranged by collection chamber through pipeline
Go out reaction tower.The present invention is handled using IC anaerobic reaction towers, and IC anaerobic techniques have processing compared with traditional anaerobic technique
Efficiency high, anti-load impact ability is strong, floor space is small etc., and advantage, its COD clearance may be up to more than 60%.According to the IC
The water quality of anaerobic reaction tower discharge outlet discharge, can repeatedly circulate and be handled through IC anaerobic reactions tower, i.e., by reaction tower discharge outlet with entering
The mouth of a river connects, until reaching expected water outlet requirement.
MBR is also known as membrane bioreactor, is a kind of new water process being combined by activated sludge process with membrane separation technique
Technology.Aerobic Pond, which needs to be aerated, provides needs of the aerobic bacteria to organic matter biodegradation, and MBR membrane modules are immersed in Aerobic Pond,
It is filtered by suction using suction pump, shearing force caused by aeration effect, is forced off the colloid on membrane module surface, allows water to pass through.
The aerobic biochemical feature of comprehensive wastewater, using MBR processing, it greatly improves solid-liquid separation efficiency, activated sludge concentration to increase
There is special efficacy bacterium in sludge, improve biochemical reaction rate.MBR has strong shock resistance, and effluent quality is good, SS (suspensions:
Including organic suspended matter and mineral suspensions) close to 0.
According to a feasible embodiment of the invention, the MBR processing steps are completed using MBR membrane bioreactors, institute
It is integral type or combined type to state MBR membrane bioreactors.
The MBR membrane bioreactors of described processing sewage refer to solid-liquid separating type film-bioreactor (Solid/
Liquid SeparationMembrane Bioreactor, SLSMBR, abbreviation MBR).Film-bioreactor is mainly by film point
Formed from component and bioreactor two parts.Solid-liquid separating type film-bioreactor includes three kinds of forms:Separated type, one
Formula and combined type.So-called separated type, refer to that membrane module and bioreactor are provided separately, the waste water in bioreactor increases through pump
The filter end of membrane module is transported to after pressure, water turns into water outlet by film under pressure.Integral type refers to that membrane module is placed to
In bioreactor, enter film-bioreactor, under aeration effect, most of pollutant is by the activity in reactor
Sludge is removed, and the water in reactor is aspirated and come out by membrane filtration by the pump that membrane module is connected.Combined type is the base in integral type
On plinth, filler is installed additional into bioreactor so as to change some characters of reactor.
According to a feasible embodiment of the invention, gone back between the pH value regulating step and the anaerobic reaction step
Including a pre-acidified processing step, make in this step the macromolecule in waste water be degraded to comprising acetic acid including small molecule thing
Matter, required small molecule is provided for the anaerobic species in follow-up anaerobic reaction step.
According to a feasible embodiment of the invention, the coagulating sedimentation step is carried out in sedimentation basin, and is sunk to described
Coagulant is added in the pond of shallow lake, the coagulant is PAC or PAM or the mixture of the two.
PAC, Powdered Activated Carbon, sewage treatment drug, PAC are more and more to be used for water process as adsorbent
In.Powdered Activated Carbon specific surface area is big, adsorptivity is strong.PAM, polyacrylamide, it is a kind of organic high molecular polymer of wire,
It is also simultaneously a kind of macromolecule water treatment flocculant product, can specially adsorbs the suspended particulate in water, play chain between particles
Bridging action is connect, fine grained is formed bigger floc sedimentation, and accelerates the speed of precipitation.PAC and PAM are used in combination, PAM
Caused floc sedimentation forms bigger dough by PAC absorption and agglomerate, realizes rapid subsidence.
According to a feasible embodiment of the invention, the aerobic biochemical reactions steps and the coagulating sedimentation step it
Between include a regulating step, for regulating pondage to ensure the normal operation of subsequent processing device.
According to a feasible embodiment of the invention, the advanced treating step also includes ultrafiltration step, the ultrafiltration step
Suddenly after the decolorization.
According to a feasible embodiment of the invention, the ultrafiltration step is immersion ultrafiltration；Decolourize to walk by described
It is rapid adsorption decolouriser is invested in pond after, hyperfiltration membrane assembly is immersed in pond, with pumping water outlet, and by the absorption
Decolorising agent separates.Preferably, the adsorption decolouriser is activated carbon.Preferably, the activated carbon uses coal mass active carbon, size
0.4mm, porosity 50%-60%.
Sewage advanced treatment step is using the technique of " charcoal absorption+ultrafiltration ", and activated carbon is added to decolouring and ultrafiltration is anti-
Ying Chihou, using immersion ultrafiltration, Activated carbon separation is carried out, ensures effluent quality.The activated carbon of separation can carry out regenerationization place
Reason.Submerged ultrafiltration component is immersed under the water surface, can be increased disturbance device in the decolouring and ultrafiltration reaction tank, be prevented
The hyperfiltration membrane assembly of submergence is blocked, and exempts back flush.
According to a feasible embodiment of the invention, reverse-osmosis treated step and electric osmose are also included after the ultrafiltration step
Processing step is analysed, the electrodialysis step is further condensed into high concentration concentrate to the concentrate obtained after counter-infiltration, carried
Reuse is produced for printing and dyeing.Reverse osmosis (RO), i.e., water is pressed onto in low concentration solution from concentrated solution by Manual pressurizing, thus with nature
The osmosis on boundary is on the contrary, be a kind of film point that can be using pressure as motive force through the skill of (semi-permeable) property film by means of selection
From technology, when pressure added in system is more than into aqueous solution osmotic pressure, hydrone constantly passes through film, by producing water flow passage
Central tube is flowed into, then the impurity in outflow water, such as ion, organic matter, bacterium, virus at one end, be trapped within entering for film
Water side, then flowed out in concentrated water water side, so as to reach isolation of purified purpose.
According to a feasible embodiment of the invention, activated sludge caused by the MBR processing steps is to contain chemical fibre
Based on materialized mud, plate and frame filter press press dewatering is entered after sludge condensation, moisture percentage in sewage sludge can be reduced to 50% or so, directly
Fill or send sludge incineration plant to handle.
The present invention also provides a kind of processing system of dyeing waste water, and it includes：The pH value regulation being sequentially connected and pre-acidified
Pond, IC anaerobic reactions tower, aerobic biochemical reaction tank, coagulative precipitation tank, regulating reservoir, coagulative precipitation tank, hydrolysis acidification pool, MBR films
Bioreactor, decolouring and ultrafiltration pond；Wherein described pH value regulation and pre-acidified pond are provided with CO2 feeders, are adjusted to pH value
Waste water is filled with CO2 in pond, between the higher waste water of alkalescence is down into pH to 6-8, to meet anaerobic species in IC anaerobic reaction towers
Requirement to pH.
According to a feasible embodiment of the invention, the decolouring and ultrafiltration pond include a pond body, and it has decolorising agent
Dispensing port, hyperfiltration membrane assembly is provided with the pond, and the hyperfiltration membrane assembly connects one and goes out water pump.Preferably, it is described decolouring and
Ultrafiltration pond is provided with disturbance device.
According to a feasible embodiment of the invention, after the decolouring and ultrafiltration pond, it is additionally provided with reverse-osmosis treated and sets
Standby and electrodialysis plant.
Reverse osmosis equipment is a kind of film that can be using pressure as motive force through the skill of (semi-permeable) property film by means of selection
Isolation technics, when pressure added in system is more than into aqueous solution osmotic pressure, hydrone constantly passes through film, by producing current
Road flows into central tube, then the impurity in outflow water, such as ion, organic matter, bacterium, virus at one end, is trapped within film
Influent side, then flowed out in concentrated water water side, so as to reach isolation of purified purpose.
Electrodialytic process is the combination of electrochemical process and dialysis diffusion process；I.e. under the driving of applying direct current electric field,
Using the selective penetrated property of amberplex, (i.e. cation can pass through cation-exchange membrane, and anion can pass through anion
Exchange membrane), anions and canons are respectively to anode and movable cathode.In ion migration processes, if the fixed charge of film and ion
Opposite charge, then ion can pass through；If their electric charge is identical, ion is ostracised, so as to realize solution desalination, it is dense
The purpose of contracting, refined or purifying.
, being capable of the further row of reduction relative to prior art according to the processing method and system of the dyeing waste water of the present invention
The COD concentration of water, water outlet SS greatly improve water outlet quality, do not cause secondary dirt to water body in whole technical process close to 0
Dye, in the case where meeting the process conditions of anaerobic reaction, keep the activity of the anaerobic species in IC anaerobic reaction towers.Realize print
The zero-emission of waste water is contaminated, directly reaches the standard of recycle-water, dope supplies printworks reuse, reduces municipal wastewater processing load.
Brief description of the drawings
Fig. 1 is the printing-dyeing waste water treatment process flow chart of prior art.
Fig. 2 is the printing-dyeing waste water treatment process flow chart of present pre-ferred embodiments.
Fig. 3 is the structural representation of MBR membrane bioreactors in present pre-ferred embodiments.
Fig. 4 is the structural representation in decolouring and ultrafiltration pond in present pre-ferred embodiments.
【Description of reference numerals】
10 aerobe reactors；11 water inlet pipes；12 outlet pipes；13 aeration tubes；14MBR membrane modules；15 suction pumps；20 is de-
Color and ultrafiltration pond；21 water inlet pipes；22 outlet pipes；23 disturbance devices；30 activated carbons；24 hyperfiltration membrane assemblies；25 pumps.
Embodiment
In order to preferably explain the present invention, in order to understand, below in conjunction with the accompanying drawings, by embodiment, to this hair
It is bright to be described in detail.
According to Fig. 1, the printing-dyeing waste water treatment process flow chart of invention preferred embodiment, printworks
Desized wastewater is adjusted through pH value successively, pre-acidified, IC anaerobic reactions tower, aerobic biochemical, regulating reservoir, coagulating sedimentation, hydrolysis acidification,
MBR processing, charcoal absorption decolouring, ultrafiltration, counter-infiltration (RO) and electrodialysis etc. are handled, and last dope supplies factory's reuse and reclaimed water
Reuse, in whole process, wastewater zero discharge, it is not necessary to municipal sewage system processes again, directly reaches recycle water standard,
The water consumption of water purification is saved for enterprise.When pH value is adjusted, the higher waste water of alkalescence is down to pH by system by the way of CO2 is filled with
To between 6-8, to meet requirement of the anaerobic species to pH in IC anaerobic reaction towers.Next coming in order illustrate each step effect and
Purpose：
Wherein, pre-acidified handle, make the macromolecule in waste water be degraded to comprising acetic acid including small-molecule substance, be follow-up
Anaerobic reaction step in anaerobic species provide required for small molecule.
Wherein, IC anaerobic reactions tower is internal-circulation anaerobic reactor, is substantially in series by 2 layers of UASB reactors.It is useless
Water from the bottom of reaction tower through water-distributing device even into, and flow up through the 1st anaerobic reaction area and the second anaerobic reaction area, 2
Individual three phase separator, finally enter the settling zone on the up flow anaerobic sludge blanket reactor top of the second anaerobic reaction area；Mixing
Sludge returns to reaction zone in Action of Gravity Field autoprecipitation area through upper strata three-phase separation area in liquid, and caused biogas is then passed through by collection chamber
Pipeline discharges reaction tower.IC anaerobic techniques are compared with traditional anaerobic technique with treatment effeciency is high, anti-load impact ability is strong, accounts for
Advantage, its COD clearance such as ground area is small may be up to more than 60%.The water quality discharged according to IC anaerobic reaction towers discharge outlet, can
Repeatedly circulation is handled through IC anaerobic reactions tower, i.e., is connected reaction tower discharge outlet with water inlet, will until reaching expected water outlet
Ask.
Aerobic treatment step, it is further by the aerobic bacteria degraded larger molecular organicses in aerobic biochemical pool.
Regulating reservoir, for regulating pondage to ensure the normal operation of subsequent processing device, water supply is avoided to overload
Or water is insufficient, causes follow-up equipment to dally.
Wherein, coagulating sedimentation step is carried out in sedimentation basin, and coagulant is added into the sedimentation basin, the coagulant
For PAC or PAM or the mixture of the two.PAC, Powdered Activated Carbon, sewage treatment drug, PAC have been got over as adsorbent
Carry out more be used in water process.Powdered Activated Carbon specific surface area is big, adsorptivity is strong.PAM, polyacrylamide, it is a kind of wire
Organic high molecular polymer, while be also a kind of macromolecule water treatment flocculant product, can specially adsorb the suspension in water
Particle, link bridging action is played between particles, fine grained is formed bigger floc sedimentation, and accelerate the speed of precipitation.
PAC and PAM are used in combination, and floc sedimentation caused by PAM is adsorbed by PAC and more agglomerate forms bigger dough, and it is quick heavy to realize
Drop.
The effect of wherein hydrolysis acidification is the hydrolyst by adding number acid or alkali, further will be big in waste water
Molecule is hydrolyzed into the small molecules such as acetic acid, to be suitable for follow-up MBR processing.
Wherein, MBR processing, completed in membrane bioreactor, MBR is also known as membrane bioreactor, is a kind of dirty by activity
The new water technology that mud method is combined with membrane separation technique.The aerobic biochemical feature of comprehensive wastewater, using MBR processing, its
Substantially increase solid-liquid separation efficiency, special efficacy bacterium in sludge occurs in activated sludge concentration increase, raising biochemical reaction rate.
Sewage advanced treatment includes decolorising agent adsorption bleaching, specially charcoal absorption decolorization and hyperfiltration treatment.Such as
Shown in Fig. 1, using the technique of " charcoal absorption+ultrafiltration ", after activated carbon is added to decolouring and ultrafiltration reaction tank, using submergence
Formula ultrafiltration, Activated carbon separation is carried out, ensure effluent quality.The course of work of this further step in Fig. 4.
Then, reverse-osmosis treated, reverse osmosis (RO), be by means of select through (semi-permeable) property film skill can using pressure as
The membrane separation technique of motive force, when pressure added in system is more than into aqueous solution osmotic pressure, hydrone constantly passes through film,
Central tube is flowed into by producing water flow passage, then the impurity in outflow water, such as ion, organic matter, bacterium, virus at one end, quilt
The influent side of film is trapped in, is then flowed out in concentrated water water side.
Finally, the electrodialysis step is further condensed into high concentration concentrate to the concentrate obtained after counter-infiltration,
Concentrate can provide production reuse, and reclaimed water reaches direct discharge standard or reuse standard, whole pollution-free water discharge.Electrodialysis
Journey is the combination of electrochemical process and dialysis diffusion process；I.e. under the driving of applying direct current electric field, amberplex is utilized
Selective penetrated property (i.e. cation can pass through cation-exchange membrane, and anion can pass through anion-exchange membrane), anions and canons
Respectively to anode and movable cathode.In ion migration processes, if the opposite charge of the fixed charge of film and ion, ion can
To pass through；If their electric charge is identical, ion is ostracised, so as to realize the mesh such as solution desalination, concentration, refined or purifying
's.
Wherein, caused sludge based on the materialized mud containing chemical fibre, enters plate in MBR processing procedures after sludge condensation
Frame filter press press dewatering, moisture percentage in sewage sludge can be reduced to 50% or so, directly fill or send sludge incineration plant to handle.
In Sewage advanced treatment step, in addition to a regenerating active carbon processing.That is, the activated carbon for decolouring is old
Returned to after change through regeneration in decolouring pond.
It is a kind of submerged MBRs membrane bioreactor, by an aerobe reactor 10 and one with reference to shown in Fig. 3
MBR membrane modules 14 are formed, and contain aerobic bacteria kind in the aerobe reactor 10, have water inlet pipe 11, aeration tube 13, outlet pipe
12 and suction pump 15, MBR membrane modules are hung 12 with water outlet with suction pump 15 and are connected.At other in embodiment, it can be replaced compound
Formula MBR membrane bioreactors, i.e., on the basis of integral type, into bioreactor install additional filler so as to change reactor certain
A little characters.Aerobe reactor 10, which needs to be aerated, provides needs of the aerobic bacteria to organic matter biodegradation, and MBR membrane modules 14 soak
Not in aerobe reactor 10, it is filtered by suction using suction pump 15, aeration tube 13 is aerated caused shearing force, makes membrane module
The colloid on 14 surfaces is forced off, and allows water to pass through, it is not necessary to is backwashed.MBR has strong shock resistance, sludge age length, water outlet water
Matter is good, SS (suspensions:Including organic suspended matter and mineral suspensions) close to 0.In other embodiment, MBR films biology
Reactor includes three kinds of forms, in addition to foregoing integral type and combined type, in addition to separated type.So-called separated type, it is film
Component 14 and aerobe reactor 10 are provided separately, and the waste water in bioreactor 10 transports to membrane module 14 after pump is pressurized
Filter end, under pressure water water outlet is turned into by film.
It is shown in Figure 4, it is decolouring and the ultrafiltration pond 20 of the Sewage advanced treatment of the embodiment of the present invention, provided with water inlet pipe
21, outlet pipe 22, activated carbon 30 is put into decolouring and ultrafiltration pond 20, has submerged hyperfiltration membrane assembly 24, in the decolouring and surpassed
Filter tank is externally provided with pump 25.After activated carbon 30 is invested in pond, hyperfiltration membrane assembly 24 is immersed in pond, pumped out with pump 25
Water, it is trapped activated carbon 30.Preferably, the activated carbon 30 uses coal mass active carbon, size 0.4mm, porosity 50%-
60%.It can increase disturbance device 23 in decolouring and ultrafiltration reaction tank 20, prevent the hyperfiltration membrane assembly 24 of submergence to be blocked, also exempt from
Except back flush, sustainable work.
According to the present invention treatment method of printing and dying wastewater, the processing system of a preferred embodiment of the present invention, it include according to
The pH value regulation and pre-acidified pond, IC anaerobic reactions tower, aerobic biochemical reaction tank, regulating reservoir, coagulative precipitation tank, hydrolysis of secondary connection
Acidification pool, MBR membrane bioreactors, decolouring and ultrafiltration pond, reverse osmosis treatment equipment, electrodialysis plant.PH value regulation and
Pre-acidified pond is provided with CO2 feeders, and into pH value regulating reservoir, waste water is filled with CO2, and the higher waste water of alkalescence is down into pH to 6-8
Between, to meet requirement of the anaerobic species to pH in IC anaerobic reaction towers.Decolourize and ultrafiltration pond 20 includes a pond body, it has
Decolorising agent dispensing port, hyperfiltration membrane assembly 24 is provided with the pond, and the hyperfiltration membrane assembly 24 connects one and goes out water pump 25.It is preferred that
, it is additionally provided with disturbance device 23 in the decolouring and ultrafiltration pond 20.Decolourize and ultrafiltration pond 20 is nearby additionally provided with regenerating active carbon and set
It is standby.
Application examples
The printing and dyeing workshop of the large-scale printing and dyeing group in Zhejiang produces 700 cubes of desized wastewater daily, COD concentration 10000mg/L,
PH value 10-12；Other 5000 cubes of dyeing and finishing plant effluents, COD concentration 1000mg/L, pH value 7-9.
COD concentration 1400mg/L after desized wastewater mixes with the waste water in dyeing and finishing workshop, water add up to 6000 cubes/day, warp
Cross 4500 cubes of process waters of reuse daily between the PROCESS FOR TREATMENT rear car.
Desized wastewater, the processing through Fig. 2 the first row processing steps, its effect see the table below：
By the processing of the second row and the 3rd processing step of artwork shown in Fig. 2, its effect see the table below：
Claims (13)
1. a kind of processing method of dyeing waste water, it is characterised in that it includes：
PH value regulating step, anaerobic reaction step, aerobic biochemical reactions steps, coagulating sedimentation step, hydrolysis acidification step, MBR
Processing step, advanced treating step, wherein the pH value regulating step is dropped the higher waste water of alkalescence by the way of CO2 is filled with
Between to pH to 6-8, to meet requirement of the anaerobic species to pH in anaerobic reaction step；The anaerobic reaction step is detested by IC
Oxygen reaction tower is completed；The advanced treating step includes decolorization.
2. the processing method of a kind of dyeing waste water according to claim 1, it is characterised in that the MBR processing steps make
Completed with MBR membrane bioreactors, the MBR membrane bioreactors are integral type or combined type.
3. the processing method of a kind of dyeing waste water according to claim 1, it is characterised in that in the pH value regulating step
Also include a pre-acidified processing step between the anaerobic reaction step, the macromolecule in waste water is degraded in this step
To include the small-molecule substance including acetic acid.
4. the processing method of a kind of dyeing waste water according to claim 1, it is characterised in that the coagulating sedimentation step exists
Carried out in sedimentation basin, and coagulant is added into the sedimentation basin, the coagulant is PAC or PAM or the mixture of the two.
5. the processing method of a kind of dyeing waste water according to claim 1, it is characterised in that reacted in the aerobic biochemical
A regulating step is included between step and the coagulating sedimentation step, for regulating pondage to ensure subsequent processing device just
Often operation.
6. the processing method of a kind of dyeing waste water according to claim 1, it is characterised in that the advanced treating step is also
Including ultrafiltration step, the ultrafiltration step is after the decolorization.
7. the processing method of a kind of dyeing waste water according to claim 6, it is characterised in that the ultrafiltration step is submergence
Formula ultrafiltration；After adsorption decolouriser in i.e. described decolorization process is launched in pond, a hyperfiltration membrane assembly is immersed in the pond,
Separated using the pumping water outlet being connected with the hyperfiltration membrane assembly, and by the adsorption decolouriser.
A kind of 8. processing method of dyeing waste water according to claim 7, it is characterised in that during ultrafiltration step,
Waste water in the pond is disturbed.
9. the processing method of a kind of dyeing waste water according to claim 6, it is characterised in that after the ultrafiltration step also
Including reverse-osmosis treated step and electrodialysis process step, the electrodialysis step enters one to the concentrate obtained after counter-infiltration
Step is condensed into high concentration concentrate, there is provided printing and dyeing production reuse.
10. a kind of processing system of dyeing waste water, it is characterised in that it includes：Be sequentially connected pH value regulation and pre-acidified pond,
IC anaerobic reactions tower, aerobic biochemical reaction tank, coagulative precipitation tank, regulating reservoir, coagulative precipitation tank, hydrolysis acidification pool, MBR films biology
Reactor, decolouring and ultrafiltration pond；Wherein described pH value regulation and pre-acidified pond are provided with CO2 feeders, into pH value regulating reservoir
Waste water is filled with CO2, between the higher waste water of alkalescence is down into pH to 6-8, to meet that anaerobic species are to pH in IC anaerobic reaction towers
Requirement.
11. the processing system of a kind of dyeing waste water according to claim 10, it is characterised in that the decolouring and ultrafiltration pond
Including a pond body, it has decolorising agent dispensing port, and hyperfiltration membrane assembly is provided with the pond, and the hyperfiltration membrane assembly connects one
Go out water pump.
A kind of 12. processing system of dyeing waste water according to claim 11, it is characterised in that preferable, the decolouring
And disturbance device is provided with ultrafiltration pond.
13. the processing system of a kind of dyeing waste water according to claim 10, it is characterised in that in the decolouring and ultrafiltration
After pond, reverse osmosis treatment equipment and electrodialysis plant are additionally provided with.
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Cited By (1)
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| CN109133509A (en) * | 2018-09-05 | 2019-01-04 | 嘉兴市天伦纳米染整有限公司 | The processing system of textile printing and dyeing sewage |
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