CN106746181A - A kind of processing method of automobile factory's waste water and application - Google Patents
A kind of processing method of automobile factory's waste water and application Download PDFInfo
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- CN106746181A CN106746181A CN201611073365.2A CN201611073365A CN106746181A CN 106746181 A CN106746181 A CN 106746181A CN 201611073365 A CN201611073365 A CN 201611073365A CN 106746181 A CN106746181 A CN 106746181A
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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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- 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
- C02F1/24—Treatment of water, waste water, or sewage by flotation
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- 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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- 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
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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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- 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
- C02F1/72—Treatment of water, waste water, or sewage by oxidation
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- 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
- C02F1/72—Treatment of water, waste water, or sewage by oxidation
- C02F1/722—Oxidation by peroxides
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- 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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- C02—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
- C02F—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
- C02F2101/00—Nature of the contaminant
- C02F2101/10—Inorganic compounds
- C02F2101/20—Heavy metals or heavy metal compounds
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- 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
- C02F2103/14—Paint wastes
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- C02—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
- C02F—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
- C02F2209/00—Controlling or monitoring parameters in water treatment
- C02F2209/08—Chemical Oxygen Demand [COD]; Biological Oxygen Demand [BOD]
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- C02—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
- C02F—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
- C02F2301/00—General aspects of water treatment
- C02F2301/08—Multistage treatments, e.g. repetition of the same process step under different conditions
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- C02—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
- C02F—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
- C02F2305/00—Use of specific compounds during water treatment
- C02F2305/02—Specific form of oxidant
- C02F2305/026—Fenton's reagent
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- C02F3/00—Biological treatment of water, waste water, or sewage
- C02F3/02—Aerobic processes
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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
- C02F3/34—Biological treatment of water, waste water, or sewage characterised by the microorganisms used
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- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02W—CLIMATE CHANGE MITIGATION TECHNOLOGIES RELATED TO WASTEWATER TREATMENT OR WASTE MANAGEMENT
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- Y02W10/10—Biological treatment of water, waste water, or sewage
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Abstract
The invention provides a kind of processing method of automobile factory's waste water, the described method comprises the following steps：1) classification treatment：It is phosphorized waste water, spray painting electrophoresis waste water and degreasing waste water by automobile factory's classification of waste, and phosphorized waste water and spray painting electrophoresis waste water is pre-processed；2) integrated treatment：By the step 1) in pretreated phosphorized waste water and spray painting electrophoresis waste water mix with degreasing waste water, add milk of lime to adjust after pH to 9 10 addition coagulant and flocculant and stir；The supernatant after stirring is taken, the coagulant and flocculant are added again after the dilute acid for adjusting pH of addition to 89, continued the laggard promoting the circulation of qi of stirring and float；Waste liquid after air supporting, biochemical treatment is carried out after the dilute acid for adjusting pH of addition to 68 using mushroom.Present invention also offers application of the methods described in vehicle coating wastewater is processed.
Description
Technical field
The present invention relates to field of waste water treatment, in particular to a kind of processing method of automobile factory's waste water.
Background technology
Contain the pollutants, particularly phosphorus such as resin, surfactant, heavy metal ion, oil, pigment in vehicle coating wastewater
Change waste water both risk factors of ion containing heavy metal nickel, and phosphorus-containing acid ion, toxicity is big, harm is big；Painting wastewater, electrophoresis waste water
The COD of difficult degradation containing higher concentration；Degreasing waste water contains lipid, oils, surfactant, and complicated component is difficult.Wherein nickel from
The removal of son and the degraded of COD are the keys of vehicle spray painting wastewater treatment qualified discharge, are also difficult point.
From saving water resource, the angle of environmental protection, spraying waste water reaches by treatment《Integrated wastewater discharge mark
It is accurate》After GB8978-1996 primary standards, can further in-depth treatment, suspension, organic pollution, the part salt gone in water removal
Point, water outlet can be used to spray pretreatment cleaning, workshop cleaning or greening irrigation, to realize Treated sewage reusing.
In view of this, it is special to propose the present invention.
The content of the invention
The first object of the present invention is to provide a kind of processing method of automobile factory's waste water, methods described comprehensive utilization thing
The many-side means such as reason, chemistry, biology process automobile factory's waste water from different perspectives, after automobile factory's classification of waste is pre-processed
Merge and further settled and degraded so that each index of waste water reaches discharge standard.
The second object of the present invention is the application for providing methods described in vehicle coating wastewater is processed, and this method is special
Be suitable for process vehicle coating wastewater, its treatment nickel ion ability and promote the very capable of COD degradation.
In order to realize above-mentioned purpose of the invention, spy uses following technical scheme：
One aspect of the present invention is related to a kind of processing method of automobile factory's waste water, the described method comprises the following steps：
1) classification treatment：It is phosphorized waste water, spray painting electrophoresis waste water and degreasing waste water by automobile factory's classification of waste, and to phosphatization
Waste water and spray painting electrophoresis waste water are pre-processed；
2) integrated treatment：By the step 1) in pretreated phosphorized waste water and spray painting electrophoresis waste water and degreasing waste water mix
Close, add coagulant and flocculant after addition milk of lime regulation pH to pH=9-10 and stir；Be conducive to removal during pH=9-10
The deposition condition of the nickel ion in waste water, comprehensive drug cost and nickel ion, nickel can be made during selection 9-10 with maximally effective reaching
Ion is fully precipitated and saves the effect of dosing.
The supernatant after stirring is taken, the coagulant and flocculant is added again after the dilute acid for adjusting pH of addition to pH=8-9,
Continue the laggard promoting the circulation of qi of stirring to float；
PH=8-9 be conducive to removal waste water in grease type, for biochemical system water inlet prepare.
Waste liquid after air supporting, biochemical treatment is carried out after the dilute acid for adjusting pH of addition to pH=6-8 using mushroom.
Automobile factory's waste water generally includes phosphorized waste water, painting wastewater, electrophoresis waste water and degreasing waste water, and the present invention passes through it not
Same property processes its leading classification, after being pre-processed to phosphorized waste water and spray painting electrophoresis waste water again with degreasing waste water together
Mix in comprehensive wastewater pond.
Growing environment requirement pH=5~8 of microorganism, maintain biochemical system growth of microorganism environment.
Calcium hydroxide regulation pH is put into composite waste, to catch the nickel ion of wherein low concentration.Then put into successively mixed
Solidifying agent and flocculant, small flco can be formed after input coagulant in waste liquid, then add flocculant to form flco bigger
Flco, be easy to follow-up separation of solid and liquid.
The separation of solid and liquid of mixed waste liquor is carried out after stirring by precipitation, flco includes simultaneously the plurality of impurities in waste liquid
Divide to walk, into sludge-tank.Supernatant repeat before operation and separation of solid and liquid is carried out using air supporting mode again, now process after
Supernatant by physics and the Duplex treatment of chemistry, wherein the metallic nickel ions content being difficult to away can reach standard,
But the solubilised state COD contents of difficult degradation are still exceeded.
The present invention is difficult to the big of degraded to carrying out bio-contact oxidation by the waste liquid after mixed processing using mushroom capture
Molecule COD and being small molecule COD further by way of oxidation Decomposition by the organic matter in waste water by macromolecular COD degradation
It is decomposed into carbon dioxide and water.
Preferably, methods described is further comprising the steps of：
3) advanced treating：The step 2) treatment after waste liquid carry out multi-medium filtering, ultrafiltration, osmosis filtration successively.
The waste liquid yield of automobile factory is very big, if although arranging compound discharge standard outside total number, still it is unfavorable for environmental protection, and
Also result in the waste of water resource, the present invention alternatively carries out the further advanced treating of waste water after integrated treatment, by press filtration,
Reverse osmosis membrane is reused after ultrafiltration and removes the harmful substances such as not biodegradable COD, ammonia nitrogen, total nitrogen, heavy metal so that waste liquid
Reuse standard is reached, the waste water of recovery is widely used, can be used for the sides such as spraying pretreatment cleaning, workshop cleaning or greening irrigation
Face, saves production cost.
Preferably, the filtering accuracy of the filtering is≤100 μm, and pressure is 3-4bar.
Preferably, milipore filter used during the ultrafiltration, pore size filter is 0.001-0.1 μm.
Preferably, the step 1) in phosphorized waste water preprocessing process include, to phosphorized waste water add milk of lime and tune
Section pH to pH=10-11, adds heavy metal chelating agent, coagulant and flocculant to be stirred, and carry out solid-liquid point using gravity
From taking supernatant.
Preferably, the step 1) in spray painting electrophoresis Wastewater Pretreatment process include, use inorganic acid adjust regulation pH
To 2.5-3, oxidation processes are carried out using strong oxidizer, it is highly preferred that the inorganic acid is sulfuric acid, the strong oxidizer is fragrant
Pause reagent.
Preferably, the step 2) in diluted acid be dilute sulfuric acid.
Preferably, the biochemical treatment is specifically included, and the waste liquid after air supporting is nitrified using Nitromonas and Nitrosomas
The organic matter in aerobic bacteria degraded waste liquid is used after reaction.
The mentality of designing of biochemical treatment is first to catch to be difficult to the macromolecular COD of decomposition and resolve into depressed drop using anaerobic bacteria
After the small molecule COD of solution, the biochemical reactivity of sewage is improved, afterwards with aerobic bacteria catalytic oxidation, the COD in sewage is oxidized
It is carbon dioxide and water, Gravity Separation is then passed through again, by the various suspensions in waste water and aging mushroom microorganism together
Sedimentation separation, obtaining can be with the water of reuse.
Preferably, the coagulant is PAC, PFS or PFC, and the flocculant is PAM-, PAM+ or nonionic PAM, excellent
Selection of land, the coagulant is PFC, and the flocculant is PAM-.
Another aspect of the present invention is related to application of the described method in vehicle coating wastewater is processed.
Compared with prior art, beneficial effects of the present invention are：
(1) method of wastewater treatment of the invention combines the advantage of various different disposal methods, biological using physical chemistry
Means never with emphasis set out effectively removal sewage in various harmful substances, sewage is reached discharge standard；
(2) processing method of the invention can further add advanced treating, the effect of purification of waste water be reached, by depth
The waste water for the treatment of can be with reuse；
(3) method of the present invention is particularly suitable for processing vehicle coating wastewater, by each to what is produced during painting dressing automobiles
Carrying out the mode of integrated treatment after the classification pretreatment of kind of waste liquid again is carried out comprehensively, thoroughly decontaminate.
Specific embodiment
Embodiment of the present invention is described in detail below in conjunction with embodiment, but those skilled in the art will
Understand, the following example is merely to illustrate the present invention, and is not construed as limiting the scope of the present invention.It is unreceipted specific in embodiment
Condition person, the condition advised according to normal condition or manufacturer is carried out.Agents useful for same or the unreceipted production firm person of instrument, are
The conventional products that can be obtained by commercially available purchase.
Embodiment 1
According to steps of processing vehicle coating wastewater：
1) phosphorized waste water pretreatment
Homogeneous is carried out in phosphorized waste water regulating reservoir to measure, after be promoted in phosphatization nickel-containing waste water PH regulating tanks, automatic feeding
Milk of lime, heavy metal chelating agent adjusts between 10-11 the pH value of waste water, and coagulation is entered after fully being reacted through mechanical agitation
Reaction tank, dosing coagulant PFC and flocculant polyacrylamide PAM-, phosphatization is flowed into after mechanical agitation coagulation, flocculation reaction
In waste water sloping plate deposition groove, after Gravity Separation, supernatant flows into detection water tank, and water outlet nickel ion reaches design standard after testing
Comprehensive wastewater pond is flowed into afterwards；
As water outlet nickel ion content overproof is unqualified after testing, then locate again in return of waste water to phosphorized waste water regulating reservoir
Reason.The sludge that phosphorized waste water inclined plate sedimentation pond precipitates then enters phosphatization sludge-tank by flowing automatically, and is pumped by sludge lifting
Enter filter press press filtration, waste reflux to the phosphorized waste water regulating reservoir of generation is processed again, dangerous outer place of solid waste mud cake committee
Reason.
2) electrophoresis painting wastewater pretreatment
Electrophoresis waste water and painting wastewater contain high-enriched organics and suspension, and painting wastewater is quantitatively added to electricity through waste water pump
Homogeneous is carried out in swimming wastewater equalization pond to measure, rear pump is promoted to waste water treatment tank and is pre-processed, by difficulty under strong oxidizer effect
The COD of degraded carries out oxidation Decomposition, and water outlet enters comprehensive wastewater wastewater disposal basin.
3) comprehensive wastewater pretreatment
Degreasing waste water is quantitatively added to comprehensive wastewater pond through waste water pump, is produced with from phosphatization, the pretreatment of electrophoresis painting wastewater
Water carries out homogeneous and measures, and is sufficiently mixed by air stirring in comprehensive wastewater pond, through comprehensive wastewater pump lifting feeding application synthesis
In wastewater pH adjustment pond, automatic feeding milk of lime adjusts between 9-10 the pH value of waste water, subsequently into coagulation reaction tank,
Dosing coagulant PFC and flocculant PAM-, after accelerating it to react through mechanical agitation, forms a large amount of floccules, into application in water
Comprehensive wastewater inclined plate sedimentation carries out separation of solid and liquid in pond.
Supernatant then flows into coagulating groove before air supporting, automatic feeding pickle, by the pH value of waste water pull back to 8-9 it
Between, then dosing coagulant PFC and flocculant PAM- again, accelerates it to enter air-floating apparatus after reacting through mechanical agitation, utilizes
The principle of FLOTATION SEPARATION, oily, trickle particle that gravity cannot be removed etc. are removed, and water quality is purified.
The water outlet of air-floating apparatus pulls back to pH value into pH adjustment tanks between 6-8, and gravity flow enters biochemical treatment system, enters
One step is processed.
Sedimentation basin base sludge, air-flotation scum enter comprehensive sludge treating system, by pumping into filter press after modification
Mud-water separation is carried out, the sewage after separation enters comprehensive wastewater pond, and treatment of urban garbage is operated outside filter cake.
4) comprehensive wastewater biochemical treatment
Comprehensive wastewater after air-flotation process enters hydrolysis acidification pool, enters after Nitromonas, Nitrosomas nitration reaction
Oxygen contacts biochemical reaction tank, using the content of organic matter in aerobic bacteria degrading waste water.Through the waste water after materialized pretreatment to hydrolysis
Acidification pool, enters aerobic contact biochemical reaction tank, using in aerobic bacteria degrading waste water after Nitromonas, Nitrosomas nitration reaction
The content of organic matter.
After biochemical treatment, clear liquid flow to biochemical final settling tanks to waste water, using the principle of Gravity Separation, by the dirt in waste water
Dye thing settles down, and the gravity flow of the clear liquid of generation enters intermediate pool, the water outlet of intermediate pool by the use of quartz sand as filter medium,
Under pressure, the quartz sand filtration for turbidity water higher being passed through certain thickness granular or non-grain, effective retention
Suspension, organic matter, colloidal particles, microorganism, chlorine, odor and part heavy metal ion in removing water etc., are finally reached drop
Low water turbidity, the purpose water outlet for purifying water reach《Integrated wastewater discharge standard》GB8978-1996 primary standards can be discharged.
5) advanced treating
Comprehensive wastewater treatment waste water up to standard, pumps into self-cleaning filter, filtering accuracy≤100 μm, and operating pressure 3~
4bar, intercepts larger suspension；Enter ultrafiltration system afterwards, the pore size filter of milipore filter is 0.001-0.1 microns, and milipore filter is only
Allow solvent (such as hydrone) in solution, inorganic salts and small organic molecule through can effectively by the suspension in solution,
The macromolecular substances such as colloid, protein and microorganism are retained, so as to the purpose for reaching purification and separate.
Product water after ultrafiltration system treatment, into cartridge filter, 5 μm of filter core of security filter precision, it is therefore an objective to
Prevent the bulky grain thing in water from entering reverse osmosis membrane.
Pretreatment is produced water and enters reverse osmosis membrane group, under pressure, sub and micro other ion permeables of most of moisture
Reverse osmosis membrane, turns into product water after collection, and reuse water supply system is entered by water production pipeline, can be with reuse；It is big in water
Part salinity and colloid, organic matter etc. can not pass through reverse osmosis membrane, remain in a small amount of concentrated water, be discharged by concentrated water pipe, into comprehensive
Processing system is closed, after treatment, can qualified discharge.
Embodiment 2
According to steps of processing vehicle coating wastewater：
1) phosphorized waste water pretreatment
Homogeneous is carried out in phosphorized waste water regulating reservoir to measure, after be promoted in phosphatization nickel-containing waste water pH regulating tanks, automatic feeding
Milk of lime, heavy metal chelating agent adjusts between 10-11 the pH value of waste water, and coagulation is entered after fully being reacted through mechanical agitation
Reaction tank, dosing coagulant PFS and flocculant polyacrylamide PAM+, phosphatization is flowed into after mechanical agitation coagulation, flocculation reaction
In waste water sloping plate deposition groove, after Gravity Separation, supernatant flows into detection water tank, and water outlet nickel ion reaches design standard after testing
Comprehensive wastewater pond is flowed into afterwards；
As water outlet nickel ion content overproof is unqualified after testing, then locate again in return of waste water to phosphorized waste water regulating reservoir
Reason.The sludge that phosphorized waste water inclined plate sedimentation pond precipitates then enters phosphatization sludge-tank by flowing automatically, and is pumped by sludge lifting
Enter filter press press filtration, waste reflux to the phosphorized waste water regulating reservoir of generation is processed again, dangerous outer place of solid waste mud cake committee
Reason.
2) electrophoresis painting wastewater pretreatment
Electrophoresis waste water and painting wastewater contain high-enriched organics and suspension, and painting wastewater is quantitatively added to electricity through waste water pump
Homogeneous is carried out in swimming wastewater equalization pond to measure, rear pump is promoted to waste water treatment tank and is pre-processed, by difficulty under strong oxidizer effect
The COD of degraded carries out oxidation Decomposition, and water outlet enters comprehensive wastewater wastewater disposal basin.
3) comprehensive wastewater pretreatment
Degreasing waste water is quantitatively added to comprehensive wastewater pond through waste water pump, is produced with from phosphatization, the pretreatment of electrophoresis painting wastewater
Water carries out homogeneous and measures, and is sufficiently mixed by air stirring in comprehensive wastewater pond, through comprehensive wastewater pump lifting feeding application synthesis
In waste water PH adjustment pond, automatic feeding milk of lime adjusts between 9-10 the pH value of waste water, subsequently into coagulation reaction tank,
Dosing coagulant PFS and flocculant PAM+, after accelerating it to react through mechanical agitation, forms a large amount of floccules, into application in water
Comprehensive wastewater inclined plate sedimentation carries out separation of solid and liquid in pond.
Supernatant then flows into coagulating groove before air supporting, automatic feeding pickle, by the pH value of waste water pull back to 8-9 it
Between, then dosing coagulant PFS and flocculant PAM+ again, accelerates it to enter air-floating apparatus after reacting through mechanical agitation, utilizes
The principle of FLOTATION SEPARATION, oily, trickle particle that gravity cannot be removed etc. are removed, and water quality is purified.
The water outlet of air-floating apparatus pulls back to pH value into pH adjustment tanks between 6-8, and gravity flow enters biochemical treatment system, enters
One step is processed.
Sedimentation basin base sludge, air-flotation scum enter comprehensive sludge treating system, by pumping into filter press after modification
Mud-water separation is carried out, the sewage after separation enters comprehensive wastewater pond, and treatment of urban garbage is operated outside filter cake.
4) comprehensive wastewater biochemical treatment
Comprehensive wastewater after air-flotation process enters hydrolysis acidification pool, enters after Nitromonas, Nitrosomas nitration reaction
Oxygen contacts biochemical reaction tank, using the content of organic matter in aerobic bacteria degrading waste water.Through the waste water after materialized pretreatment to hydrolysis
Acidification pool, enters aerobic contact biochemical reaction tank, using in aerobic bacteria degrading waste water after Nitromonas, Nitrosomas nitration reaction
The content of organic matter.
After biochemical treatment, clear liquid flow to biochemical final settling tanks to waste water, using the principle of Gravity Separation, by the dirt in waste water
Dye thing settles down, and the gravity flow of the clear liquid of generation enters intermediate pool, the water outlet of intermediate pool by the use of quartz sand as filter medium,
Under pressure, the quartz sand filtration for turbidity water higher being passed through certain thickness granular or non-grain, effective retention
Suspension, organic matter, colloidal particles, microorganism, chlorine, odor and part heavy metal ion in removing water etc., are finally reached drop
Low water turbidity, the purpose water outlet for purifying water reach《Integrated wastewater discharge standard》GB8978-1996 primary standards can be discharged.
5) advanced treating
Comprehensive wastewater treatment waste water up to standard, pumps into self-cleaning filter, filtering accuracy≤100 μm, and operating pressure 3~
4bar, intercepts larger suspension；Enter ultrafiltration system afterwards, the pore size filter of milipore filter is 0.001-0.1 microns, and milipore filter is only
Allow solvent (such as hydrone) in solution, inorganic salts and small organic molecule through can effectively by the suspension in solution,
The macromolecular substances such as colloid, protein and microorganism are retained, so as to the purpose for reaching purification and separate.
Product water after ultrafiltration system treatment, into cartridge filter, 5 μm of filter core of security filter precision, it is therefore an objective to
Prevent the bulky grain thing in water from entering reverse osmosis membrane.
Pretreatment is produced water and enters reverse osmosis membrane group, under pressure, sub and micro other ion permeables of most of moisture
Reverse osmosis membrane, turns into product water after collection, and reuse water supply system is entered by water production pipeline, can be with reuse；It is big in water
Part salinity and colloid, organic matter etc. can not pass through reverse osmosis membrane, remain in a small amount of concentrated water, be discharged by concentrated water pipe, into comprehensive
Processing system is closed, after treatment, can qualified discharge.
Embodiment 3
According to steps of processing vehicle coating wastewater：
1) phosphorized waste water pretreatment
Homogeneous is carried out in phosphorized waste water regulating reservoir to measure, after be promoted in phosphatization nickel-containing waste water pH regulating tanks, automatic feeding
Milk of lime, heavy metal chelating agent adjusts between 10-11 the pH value of waste water, and coagulation is entered after fully being reacted through mechanical agitation
Reaction tank, dosing coagulant PAC and nonionic PAM, flow into phosphorized waste water swash plate heavy after mechanical agitation coagulation, flocculation reaction
In the groove of shallow lake, after Gravity Separation, supernatant flows into detection water tank, and water outlet nickel ion is comprehensive up to inflow after design standard after testing
Wastewater disposal basin；
As water outlet nickel ion content overproof is unqualified after testing, then locate again in return of waste water to phosphorized waste water regulating reservoir
Reason.The sludge that phosphorized waste water inclined plate sedimentation pond precipitates then enters phosphatization sludge-tank by flowing automatically, and is pumped by sludge lifting
Enter filter press press filtration, waste reflux to the phosphorized waste water regulating reservoir of generation is processed again, dangerous outer place of solid waste mud cake committee
Reason.
2) electrophoresis painting wastewater pretreatment
Electrophoresis waste water and painting wastewater contain high-enriched organics and suspension, and painting wastewater is quantitatively added to electricity through waste water pump
Homogeneous is carried out in swimming wastewater equalization pond to measure, rear pump is promoted to waste water treatment tank and is pre-processed, by difficulty under strong oxidizer effect
The COD of degraded carries out oxidation Decomposition, and water outlet enters comprehensive wastewater wastewater disposal basin.
3) comprehensive wastewater pretreatment
Degreasing waste water is quantitatively added to comprehensive wastewater pond through waste water pump, is produced with from phosphatization, the pretreatment of electrophoresis painting wastewater
Water carries out homogeneous and measures, and is sufficiently mixed by air stirring in comprehensive wastewater pond, through comprehensive wastewater pump lifting feeding application synthesis
In waste water PH adjustment pond, automatic feeding milk of lime adjusts between 9-10 the pH value of waste water, subsequently into coagulation reaction tank,
Dosing coagulant PAC and flocculant nonionic PAM, after accelerating it to react through mechanical agitation, forms a large amount of floccules in water, enter
Enter and carry out separation of solid and liquid in application comprehensive wastewater inclined plate sedimentation pond.
Supernatant then flows into coagulating groove before air supporting, automatic feeding pickle, by the pH value of waste water pull back to 8-9 it
Between, then dosing coagulant PAC and flocculant nonionic PAM again, accelerates it to be filled into air supporting after reacting through mechanical agitation
Put, using the principle of FLOTATION SEPARATION, oily, the trickle particle that gravity cannot be removed etc. is removed, and water quality is purified.
The water outlet of air-floating apparatus pulls back to pH value into pH adjustment tanks between 6-8, and gravity flow enters biochemical treatment system, enters
One step is processed.
Sedimentation basin base sludge, air-flotation scum enter comprehensive sludge treating system, by pumping into filter press after modification
Mud-water separation is carried out, the sewage after separation enters comprehensive wastewater pond, and treatment of urban garbage is operated outside filter cake.
4) comprehensive wastewater biochemical treatment
Comprehensive wastewater after air-flotation process enters hydrolysis acidification pool, enters after Nitromonas, Nitrosomas nitration reaction
Oxygen contacts biochemical reaction tank, using the content of organic matter in aerobic bacteria degrading waste water.Through the waste water after materialized pretreatment to hydrolysis
Acidification pool, enters aerobic contact biochemical reaction tank, using in aerobic bacteria degrading waste water after Nitromonas, Nitrosomas nitration reaction
The content of organic matter.
After biochemical treatment, clear liquid flow to biochemical final settling tanks to waste water, using the principle of Gravity Separation, by the dirt in waste water
Dye thing settles down, and the gravity flow of the clear liquid of generation enters intermediate pool, the water outlet of intermediate pool by the use of quartz sand as filter medium,
Under pressure, the quartz sand filtration for turbidity water higher being passed through certain thickness granular or non-grain, effective retention
Suspension, organic matter, colloidal particles, microorganism, chlorine, odor and part heavy metal ion in removing water etc., are finally reached drop
Low water turbidity, the purpose water outlet for purifying water reach《Integrated wastewater discharge standard》GB8978-1996 primary standards can be discharged.
5) advanced treating
Comprehensive wastewater treatment waste water up to standard, pumps into self-cleaning filter, filtering accuracy≤100 μm, and operating pressure 3~
4bar, intercepts larger suspension；Enter ultrafiltration system afterwards, the pore size filter of milipore filter is 0.001-0.1 microns, and milipore filter is only
Allow solvent (such as hydrone) in solution, inorganic salts and small organic molecule through can effectively by the suspension in solution,
The macromolecular substances such as colloid, protein and microorganism are retained, so as to the purpose for reaching purification and separate.
Product water after ultrafiltration system treatment, into cartridge filter, 5 μm of filter core of security filter precision, it is therefore an objective to
Prevent the bulky grain thing in water from entering reverse osmosis membrane.
Pretreatment is produced water and enters reverse osmosis membrane group, under pressure, sub and micro other ion permeables of most of moisture
Reverse osmosis membrane, turns into product water after collection, and reuse water supply system is entered by water production pipeline, can be with reuse；It is big in water
Part salinity and colloid, organic matter etc. can not pass through reverse osmosis membrane, remain in a small amount of concentrated water, be discharged by concentrated water pipe, into comprehensive
Processing system is closed, after treatment, can qualified discharge.
The project operation result：
(1) Inlet and outlet water index is as follows：
Enter the original pollution factor of all kinds of waste water of waste water processing station and concentration：
All kinds of influent waste water water quality tables of table 1 (mg/L, pH dimensionless)
(2) by 4) effluent index reaches GB8978-1996 after comprehensive wastewater biochemical treatment《Integrated wastewater discharge standard》
Middle primary standard, it is specific as follows：
The discharge of wastewater mouth water outlet testing result (mg/L, pH dimensionless) of table 2
(3) by 5) effluent index reaches SL386-2006 after advanced treating《Standard of reclaimed water》City is non-to drink
Water-urban afforestation index limits, it is specific as follows：
The recycle-water water outlet testing result (mg/L, pH dimensionless) of table 3
Although illustrate and describing the present invention with specific embodiment, but will be appreciated that without departing substantially from of the invention
Many other changes and modification can be made in the case of spirit and scope.It is, therefore, intended that in the following claims
Including belonging to all such changes and modifications in the scope of the invention.
Claims (10)
1. a kind of processing method of automobile factory's waste water, it is characterised in that the described method comprises the following steps：
1) classification treatment：It is phosphorized waste water, spray painting electrophoresis waste water and degreasing waste water by automobile factory's classification of waste, and to phosphorized waste water
Pre-processed with spray painting electrophoresis waste water；
2) integrated treatment：By the step 1) in pretreated phosphorized waste water and spray painting electrophoresis waste water mix with degreasing waste water,
Coagulant and flocculant are added after addition milk of lime regulation pH to 9-10 and stir；The supernatant after stirring is taken, adds diluted acid to adjust
The coagulant and flocculant are added again after section pH to 8-9, are continued the laggard promoting the circulation of qi of stirring and are floated；
Waste liquid after air supporting, biochemical treatment is carried out after the dilute acid for adjusting pH of addition to 6-8 using mushroom.
2. method according to claim 1, it is characterised in that methods described is further comprising the steps of：3) advanced treating：Institute
State step 2) treatment after waste liquid carry out multi-medium filtering, ultrafiltration, osmosis filtration successively.
3. method according to claim 2, it is characterised in that the filtering accuracy of the multi-medium filtering is≤100 μm, pressure
Power is 3-4bar.
4. method according to claim 2, it is characterised in that milipore filter used during the ultrafiltration, pore size filter is
0.001-0.1μm。
5. method according to claim 1, it is characterised in that the step 1) in phosphorized waste water preprocessing process bag
Include, milk of lime and regulation pH to pH=10-11 are added to phosphorized waste water, add heavy metal chelating agent, coagulant and flocculant to enter
Row stirring, and separation of solid and liquid is carried out using gravity, take supernatant.
6. method according to claim 1, it is characterised in that the step 1) in spray painting electrophoresis Wastewater Pretreatment process
Including, using inorganic acid for adjusting pH to 2.5-3 after, oxidation processes are carried out using strong oxidizer, it is preferable that the inorganic acid is sulphur
Acid, the strong oxidizer is Fenton reagent.
7. method according to claim 1, it is characterised in that the step 2) in diluted acid be dilute sulfuric acid.
8. method according to claim 1, it is characterised in that the biochemical treatment is specifically included, and the waste liquid after air supporting makes
The organic matter in aerobic bacteria degraded waste liquid is used after carrying out nitration reaction with Nitromonas and Nitrosomas.
9. the method according to any one in claim 1-8, it is characterised in that the coagulant be PAC, PFS or
PFC, the flocculant is PAM-, PAM+ or nonionic PAM, it is preferable that the coagulant is PFC, and the flocculant is
PAM-。
10. application of the method in claim 1-9 described in any one in vehicle coating wastewater is processed.
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| CN108218088A (en) * | 2018-02-11 | 2018-06-29 | 安徽江淮汽车集团股份有限公司 | Coating wastewater zero discharge treatment method and system |
| CN108328862A (en) * | 2018-02-11 | 2018-07-27 | 奇瑞汽车股份有限公司 | A kind of wastewater regenerating and recycling processing system and method |
| CN109020054A (en) * | 2018-07-12 | 2018-12-18 | 菏泽学院 | A kind of processing method of phosphorus-containing wastewater |
| CN109678274A (en) * | 2019-01-14 | 2019-04-26 | 知合环境（北京）有限责任公司 | A kind of method of Fenton oxidation-air bearing collaboration Removal of Phosphorus in Wastewater |
| CN110981076A (en) * | 2019-10-23 | 2020-04-10 | 盐城特立涂装专用设备有限公司 | Immersed ultrafiltration process for treating common sewage in automobile factory |
| CN112358135A (en) * | 2020-11-16 | 2021-02-12 | 神美科技有限公司 | Industrial water treatment equipment and process |
| CN112573690A (en) * | 2020-05-20 | 2021-03-30 | 汕头市国富锆钛实业有限公司 | Method for treating beneficiation wastewater of zirconium-titanium concentration plant |
| CN113045116A (en) * | 2021-03-15 | 2021-06-29 | 重庆乐邦环保机电研究所有限公司 | Method for treating production wastewater of automobile coating workshop |
| CN114436481A (en) * | 2022-04-02 | 2022-05-06 | 山东凤鸣桓宇环保有限公司 | Resource recovery process for phosphating wastewater |
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| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN108101317A (en) * | 2018-01-22 | 2018-06-01 | 四会市宏创工业机械设备有限公司 | Electrophoresis waste water COD processing unit |
| CN108218088A (en) * | 2018-02-11 | 2018-06-29 | 安徽江淮汽车集团股份有限公司 | Coating wastewater zero discharge treatment method and system |
| CN108328862A (en) * | 2018-02-11 | 2018-07-27 | 奇瑞汽车股份有限公司 | A kind of wastewater regenerating and recycling processing system and method |
| CN109020054A (en) * | 2018-07-12 | 2018-12-18 | 菏泽学院 | A kind of processing method of phosphorus-containing wastewater |
| CN109678274A (en) * | 2019-01-14 | 2019-04-26 | 知合环境（北京）有限责任公司 | A kind of method of Fenton oxidation-air bearing collaboration Removal of Phosphorus in Wastewater |
| CN110981076A (en) * | 2019-10-23 | 2020-04-10 | 盐城特立涂装专用设备有限公司 | Immersed ultrafiltration process for treating common sewage in automobile factory |
| CN112573690A (en) * | 2020-05-20 | 2021-03-30 | 汕头市国富锆钛实业有限公司 | Method for treating beneficiation wastewater of zirconium-titanium concentration plant |
| CN112358135A (en) * | 2020-11-16 | 2021-02-12 | 神美科技有限公司 | Industrial water treatment equipment and process |
| CN113045116A (en) * | 2021-03-15 | 2021-06-29 | 重庆乐邦环保机电研究所有限公司 | Method for treating production wastewater of automobile coating workshop |
| CN113045116B (en) * | 2021-03-15 | 2023-03-10 | 重庆乐邦环保机电研究所有限公司 | Method for treating production wastewater of automobile coating workshop |
| CN114436481A (en) * | 2022-04-02 | 2022-05-06 | 山东凤鸣桓宇环保有限公司 | Resource recovery process for phosphating wastewater |
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