CN110981076A - Immersed ultrafiltration process for treating common sewage in automobile factory - Google Patents
Immersed ultrafiltration process for treating common sewage in automobile factory Download PDFInfo
- Publication number
- CN110981076A CN110981076A CN201911013573.7A CN201911013573A CN110981076A CN 110981076 A CN110981076 A CN 110981076A CN 201911013573 A CN201911013573 A CN 201911013573A CN 110981076 A CN110981076 A CN 110981076A
- Authority
- CN
- China
- Prior art keywords
- sewage
- treatment
- tank
- ultrafiltration
- coagulation
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Pending
Links
Images
Classifications
-
- C—CHEMISTRY; METALLURGY
- C02—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
- C02F—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
- C02F9/00—Multistage treatment of water, waste water or sewage
-
- C—CHEMISTRY; METALLURGY
- C02—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
- C02F—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
- C02F1/00—Treatment of water, waste water, or sewage
- C02F1/001—Processes for the treatment of water whereby the filtration technique is of importance
-
- C—CHEMISTRY; METALLURGY
- C02—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
- C02F—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
- C02F1/00—Treatment of water, waste water, or sewage
- C02F1/24—Treatment of water, waste water, or sewage by flotation
-
- 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
-
- 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
- C02F1/40—Devices for separating or removing fatty or oily substances or similar floating material
-
- 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
- C02F1/4696—Treatment of water, waste water, or sewage by electrochemical methods by electrochemical separation, e.g. by electro-osmosis, electrodialysis, electrophoresis electrophoresis
-
- 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
-
- 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
-
- 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
- C02F1/72—Treatment of water, waste water, or sewage by oxidation
- C02F1/722—Oxidation by peroxides
-
- 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
- C02F1/72—Treatment of water, waste water, or sewage by oxidation
- C02F1/725—Treatment of water, waste water, or sewage by oxidation by catalytic oxidation
-
- C—CHEMISTRY; METALLURGY
- C02—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
- C02F—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
- C02F2101/00—Nature of the contaminant
- C02F2101/10—Inorganic compounds
- C02F2101/105—Phosphorus compounds
-
- C—CHEMISTRY; METALLURGY
- C02—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
- C02F—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
- C02F2101/00—Nature of the contaminant
- C02F2101/10—Inorganic compounds
- C02F2101/20—Heavy metals or heavy metal compounds
-
- C—CHEMISTRY; METALLURGY
- C02—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
- C02F—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
- C02F2101/00—Nature of the contaminant
- C02F2101/30—Organic compounds
-
- C—CHEMISTRY; METALLURGY
- C02—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
- C02F—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
- C02F2101/00—Nature of the contaminant
- C02F2101/30—Organic compounds
- C02F2101/32—Hydrocarbons, e.g. oil
-
- C—CHEMISTRY; METALLURGY
- C02—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
- C02F—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
- C02F2101/00—Nature of the contaminant
- C02F2101/30—Organic compounds
- C02F2101/34—Organic compounds containing oxygen
-
- 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
- C02F2303/14—Maintenance of water treatment installations
-
- 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
Landscapes
- Life Sciences & Earth Sciences (AREA)
- Hydrology & Water Resources (AREA)
- Engineering & Computer Science (AREA)
- Environmental & Geological Engineering (AREA)
- Water Supply & Treatment (AREA)
- Chemical & Material Sciences (AREA)
- Organic Chemistry (AREA)
- Separation Using Semi-Permeable Membranes (AREA)
- Separation Of Suspended Particles By Flocculating Agents (AREA)
Abstract
The invention discloses an immersed ultrafiltration process for treating common sewage of an automobile factory, which comprises degreasing treatment, oxidative decomposition treatment, electrophoresis treatment, coagulation and reverberation, coagulating sedimentation, coagulating air flotation, physical filtration, biomembrane ultrafiltration, detection and sludge treatment. This submergence formula ultrafiltration process to sewage treatment commonly used in automotive factory through adding biomembrane ultrafiltration system after traditional one-level, second grade sedimentation treatment, further filters the sewage after traditional filtration mode filters, has improved the filterable effect of sediment in the sewage, has reduced the COD index of sewage to sewage treatment's standard reaching rate has been improved, and the milipore filter that biomembrane ultrafiltration system used can use repeatedly through the back flush, has reduced sewage treatment's cost.
Description
Technical Field
The invention relates to the field of automobile sewage treatment, in particular to an immersed ultrafiltration process for treating common sewage in an automobile factory.
Background
The waste water discharged from automobile coating line mainly comprises emulsified oil left in the procedures of degreasing, phosphorization, surface adjustment and the like during surface treatment before painting, surfactant, phosphate, heavy metal ions (such as Zn2+), filler (such as titanium dioxide) and solvent, resin (such as epoxy resin, phenolic resin and the like) during spraying, pigment (such as carbon black, iron oxide red, lead mercury and the like), filler (such as titanium dioxide, talcum powder and the like), cosolvent (such as triethanolamine, butanol and the like) and a small amount of heavy metal ions.
The traditional sewage treatment mode of the automobile factory adopts a sedimentation tank to carry out solid-liquid separation on sediments separated out from sewage, but the COD index in the sewage is difficult to be efficiently reduced only by using the traditional solid-liquid separation method, so that the sewage cannot reach the discharge standard.
Disclosure of Invention
Technical problem to be solved
Aiming at the defects of the prior art, the invention provides an immersed ultrafiltration process for treating common sewage in an automobile factory, which solves the problems of insufficient sewage treatment precision and substandard sewage treatment.
(II) technical scheme
In order to achieve the purpose, the invention provides the following technical scheme: an immersed ultrafiltration process for treating common sewage in an automobile factory comprises degreasing treatment, oxidative decomposition treatment, electrophoresis treatment, coagulation reverberation, coagulating sedimentation, coagulating air flotation, physical filtration, biomembrane ultrafiltration, detection and sludge treatment, and specifically comprises the following operations:
the first step is as follows: degreasing treatment
Performing emulsion breaking pretreatment on the waste liquid by adopting an acidification method, adding inorganic acid into the waste liquid to adjust the pH to 2-3, and separating out fatty acid from higher fatty acid soap in an emulsifier to achieve emulsion breaking;
the second step is that: oxidative decomposition treatment
Treating the wastewater by using a Fenton reagent formed by mixing H2O2 and FeSO4, and oxidatively decomposing organic oxides in the wastewater;
the third step: electrophoretic treatment
Performing electrophoresis treatment on the waste liquid, adding inorganic acid into the waste liquid to adjust the pH value to be 11-12, and adding cationic Polyacrylamide (PMA) and polyaluminium chloride (PAC) into the waste liquid as flocculating agents;
the fourth step: reverse sound of coagulation
Adding an inorganic flocculant into the waste liquid, and aggregating oil, polymer resin, pigment, powder, phosphate and the like in the waste liquid into a flocculating constituent with obvious precipitation performance to form precipitate or scum;
the fifth step: coagulating sedimentation
Introducing the waste liquid into an inclined plate sedimentation tank, adding adsorbed carbon powder into the sedimentation tank, carrying out physical adsorption sedimentation, and removing heavy metal compound sediment by using the inclined plate sedimentation tank;
and a sixth step: coagulation air float
Introducing the sewage from which the heavy metal compound precipitate is removed into an air floatation tank to remove lighter floating organic matters;
the seventh step: physical filtration
Introducing the sewage in the previous step into a quartz sand filter and an active carbon filter tank, and intercepting suspended matters, organic matters, colloidal particles and the like in the sewage by using a physical pressure and physical adsorption method;
eighth step: biofilm ultrafiltration
Intercepting and screening suspended matters and dissolved organic matters in the sewage after the step by using a biological membrane;
the ninth step: detection of
Disinfecting the sewage filtered by the biological membrane, and discharging after the sewage is qualified;
the tenth step: sludge treatment
Ca (OH)2 is added into a sludge concentration tank, the pH value is adjusted to about 10, and a plate-and-frame filter press is used for carrying out filter pressing on the sludge.
Preferably, the coagulation sedimentation is a primary coagulation reaction, the pH value of the coagulation sedimentation treatment is 10-10.5, the reaction tank adopts a plug flow type reaction tank and is divided into three grids, the pH value is increased to 10-10.5 by adding alkali into the first grid, CaCl2 is added, the residence time is 15 minutes, FeSO4 is added into the second grid, the residence time is 15 minutes, coagulant PAM is added into the third grid, the residence time is 7.5 minutes, the reaction product enters an inclined plate sedimentation tank for solid-liquid separation after reaction, and the surface load of the inclined plate sedimentation tank is 2m3/m 2. h.
Preferably, the coagulation air floatation is a reaction tank of a secondary coagulation reaction, a plug flow type reaction tank is adopted and divided into three grids, the pH value is adjusted to 8.5-9 by adding acid into the first grid, PAC is added into the second grid, PAM is added into the third grid, solid-liquid separation is carried out in an air floatation tank after reaction, the retention time of the secondary reaction tank is 10 minutes, 10 minutes and 5 minutes respectively, and the dissolved air water amount of the air floatation tank is 30% of the treated sewage amount.
Preferably, the physical filtration is depth filtration, and the filtration speed of the physical filtration device is controlled to be 10-12m3/(m2 h).
Preferably, the biological membrane ultrafiltration adopts a semi-dead-end filtration system, and an ultrafiltration membrane used by the biological membrane ultrafiltration system adopts a backwashing method to remove dirt deposited on the surface of the membrane.
(III) advantageous effects
Compared with the prior art, the invention provides an immersed ultrafiltration process for treating common sewage in an automobile plant, which has the following beneficial effects:
(1) this submergence formula ultrafiltration process to sewage treatment commonly used in automotive factory through adding biomembrane ultrafiltration system after traditional one-level, second grade sedimentation treatment, further filters the sewage after traditional filtration mode filters, has improved the filterable effect of sediment in the sewage, has reduced the COD index of sewage to sewage treatment's standard reaching rate has been improved, and the milipore filter that biomembrane ultrafiltration system used can use repeatedly through the back flush, has reduced sewage treatment's cost.
(2) This submergence formula ultrafiltration technology to sewage treatment commonly used in automotive factory, through adding powdered carbon in the sewage when coagulating sedimentation for powdered carbon mixes in sewage, utilizes physical adsorption and precipitate adsorption to combine together, has increased the volume of precipitate, makes precipitate weight increase, thereby makes the precipitate discharge more easily, has improved precipitate exhaust efficiency, has increaseed precipitate exhaust quantity, thereby has improved the COD index of sewage.
Drawings
FIG. 1 is a schematic diagram of the process of the present invention.
Detailed Description
All other embodiments, which can be derived by a person skilled in the art from the embodiments given herein without making any creative effort, shall fall within the protection scope of the present invention.
The invention provides a technical scheme that: an immersed ultrafiltration process for treating common sewage in an automobile factory comprises degreasing treatment, oxidative decomposition treatment, electrophoresis treatment, coagulation reverberation, coagulating sedimentation, coagulating air flotation, physical filtration, biomembrane ultrafiltration, detection and sludge treatment, and specifically comprises the following operations:
the first step is as follows: degreasing treatment
Performing emulsion breaking pretreatment on the waste liquid by adopting an acidification method, adding inorganic acid into the waste liquid to adjust the pH to 2-3, separating out fatty acid from higher fatty acid soap in an emulsifier, wherein the higher fatty acid is insoluble in water and soluble in oil, so that the waste liquid is subjected to emulsion breaking and oil separation, and after the acid is added, an anion appearance active agent in the waste liquid is easily decomposed in an acid solution to lose the tranquility and lose the balance of original lipophilicity and hydrophilicity, so that emulsion breaking is achieved, and the COD is reduced from 2500-;
the second step is that: oxidative decomposition treatment
The waste water is treated by a Fenton reagent formed by mixing H2O2 and FeSO4, organic oxides in the waste water are oxidized and decomposed, the Fenton reagent has strong oxidizing capability, and can partially oxidize refractory organic matters in the waste water, so that C-C bonds of the organic matters in the waste water are broken and finally decomposed into H2O, CO2 and the like, the COD index is reduced, and the removal efficiency of CODCr in the process is about 30%;
the third step: electrophoretic treatment
Performing electrophoresis treatment on the waste liquid, adding inorganic acid into the waste liquid to adjust the pH value to be 11-12, and adding cationic Polyacrylamide (PMA) and polyaluminium chloride (PAC) into the waste liquid as flocculating agents; the pollutants in the sewage are rapidly treated by utilizing the adsorption and bridging action of a flocculating agent, and the COD of the waste liquid obtained in the step is about 2000 mg/L;
the fourth step: reverse sound of coagulation
Adding an inorganic flocculant into the waste liquid, wherein oil, high-molecular resin, pigment, powder, phosphate and the like in the waste liquid are aggregated into a flocculating constituent with obvious precipitation performance to form precipitate or scum, the oil, the high-molecular resin, the pigment, the powder, the phosphate and the like in the sewage are dispersed in an aqueous solution in a colloid form under the action of a surfactant, a solvent and various auxiliaries, and a chemical agent is added to destroy a stable system formed by fine suspended particles of the colloid in the water so as to enable the fine suspended particles to be aggregated into a flocculent constituent with obvious precipitation performance;
the fifth step: coagulating sedimentation
Introducing the waste liquid into an inclined plate sedimentation tank, adding adsorbed carbon powder into the sedimentation tank, carrying out physical adsorption sedimentation, removing relatively heavy metal compound sediment by using the inclined plate sedimentation tank, adsorbing the carbon powder and the sediment, increasing the volume of the sediment and enabling the sediment to be better precipitated;
and a sixth step: coagulation air float
Introducing the sewage from which the heavy metal compound precipitates are removed into an air floatation tank to remove light floating organic matters, and in the process, wrapping the light organic matters which cannot be precipitated by utilizing bubbles in the air floatation tank and floating the organic matters to the water surface for removing;
the seventh step: physical filtration
Introducing the sewage in the previous step into a quartz sand filter and an active carbon filter tank, intercepting suspended matters, organic matters, colloidal particles and the like in the sewage by using a physical pressure and physical adsorption method, and intercepting sediments which are not naturally precipitated in the sewage by quartz sand and active carbon;
eighth step: biofilm ultrafiltration
The suspended matters and dissolved organic matters in the sewage are intercepted and filtered by a biological membrane, so that the filtering effect of the sediment in the sewage is further improved;
the ninth step: detection of
Disinfecting the sewage filtered by the biological membrane, discharging after the sewage is qualified, detecting the treated sewage, discharging if the treated sewage is qualified, and circularly treating the sewage until the treated sewage reaches the standard if the treated sewage is not qualified;
the tenth step: sludge treatment
Adding Ca (OH)2 into a sludge concentration tank, adjusting the pH value to about 10, performing filter pressing on the sludge by using a plate-and-frame filter press, discharging sewage in the sludge, and introducing the sewage into a treatment tank for treatment.
The coagulating sedimentation is a primary coagulating reaction, the pH value of the coagulating sedimentation treatment is 10-10.5, a plug flow type reaction tank is adopted in the reaction tank, the reaction tank is divided into three grids, alkali is added into the first grid to adjust the pH value to 10-10.5, CaCl2 is added, the residence time is 15 minutes, FeSO4 is added into the second grid, the residence time is 15 minutes, coagulant PAM is added into the third grid, the residence time is 7.5 minutes, the reaction tank enters an inclined plate sedimentation tank for solid-liquid separation after reaction, the surface load of the inclined plate sedimentation tank is 2m3/m 2.h, Ni2+ generates Ni (OH)2 sediment in heavy metal ions and phosphate, and the optimal pH value of PO 43-generated Ca3(PO4)2 sediment is more than 10, and the ions are removed in the process.
The coagulation air flotation is a reaction tank of a secondary coagulation reaction, a plug flow type reaction tank is adopted and divided into three grids, the pH value is adjusted back to 8.5-9 by adding acid into the first grid, PAC is added into the second grid, PAM is added into the third grid, solid-liquid separation is carried out in an air flotation tank after reaction, the retention time of the secondary reaction tank is 10 minutes, 10 minutes and 5 minutes respectively, the dissolved air water amount of the air flotation tank is 30% of the sewage treatment amount, and Ni2+, PO 43-and Zn2+ ions are effectively removed in the process.
Wherein, the physical filtration is depth filtration, the filtration speed of a physical filtration device is controlled at 10-12m3/(m2 h), and the physical filtration device further removes the sediment which is not removed in the steps through the interception of sediment in the sewage by a quartz sand filter and the adsorption of activated carbon.
The biological membrane ultrafiltration adopts a semi-dead-end filtration system, the ultrafiltration membrane used by the biological membrane ultrafiltration system adopts a backwashing method to remove dirt deposited on the surface of the membrane, and the ultrafiltration membrane can be repeatedly used, so that the cost of sewage treatment is reduced, and the sewage treatment effect is further improved.
In summary, an immersion ultrafiltration process for sewage treatment commonly used in an automobile plant comprises the steps of degreasing and pretreating sewage of the automobile plant, carrying out de-emulsification treatment on fatty acids at a higher fatty acid saponification position, oxidizing refractory organic matters in the sewage by using a strong oxidizing agent, removing metal ions in the sewage by using electrophoresis treatment, adding a coagulant into the sewage to break the stable state of colloids in the sewage so that the colloids are condensed into precipitates, discharging the precipitates with higher quality in the sewage by using an inclined plate sedimentation tank, wrapping and floating the precipitates with lower quality on the water surface by using an air flotation tank, discharging the precipitates from the water surface, and finally, filtering the non-precipitated organic matters in the sewage by using physical precipitation in cooperation with a biomembrane ultrafiltration system, and discharging the sewage after reaching the standard.
It is noted that, herein, relational terms such as first and second, and the like may be used solely to distinguish one entity or action from another entity or action without necessarily requiring or implying any actual such relationship or order between such entities or actions. Also, the terms "comprises," "comprising," or any other variation thereof, are intended to cover a non-exclusive inclusion, such that a process, method, article, or apparatus that comprises a list of elements does not include only those elements but may include other elements not expressly listed or inherent to such process, method, article, or apparatus.
Although embodiments of the present invention have been shown and described, it will be appreciated by those skilled in the art that changes, modifications, substitutions and alterations can be made in these embodiments without departing from the principles and spirit of the invention, the scope of which is defined in the appended claims and their equivalents.
Claims (5)
1. An immersed ultrafiltration process for treating common sewage in an automobile factory is characterized in that: the sewage treatment process comprises degreasing treatment, oxidative decomposition treatment, electrophoresis treatment, coagulation reverberation, coagulation sedimentation, coagulation air flotation, physical filtration, biomembrane ultrafiltration, detection and sludge treatment, and specifically comprises the following operations:
the first step is as follows: degreasing treatment
Performing emulsion breaking pretreatment on the waste liquid by adopting an acidification method, adding inorganic acid into the waste liquid to adjust the pH to 2-3, and separating out fatty acid from higher fatty acid soap in an emulsifier to achieve emulsion breaking;
the second step is that: oxidative decomposition treatment
Treating the wastewater by using a Fenton reagent formed by mixing H2O2 and FeSO4, and oxidatively decomposing organic oxides in the wastewater;
the third step: electrophoretic treatment
Performing electrophoresis treatment on the waste liquid, adding inorganic acid into the waste liquid to adjust the pH value to be 11-12, and adding cationic Polyacrylamide (PMA) and polyaluminium chloride (PAC) into the waste liquid as flocculating agents;
the fourth step: reverse sound of coagulation
Adding an inorganic flocculant into the waste liquid, and aggregating oil, polymer resin, pigment, powder, phosphate and the like in the waste liquid into a flocculating constituent with obvious precipitation performance to form precipitate or scum;
the fifth step: coagulating sedimentation
Introducing the waste liquid into an inclined plate sedimentation tank, adding adsorbed carbon powder into the sedimentation tank, carrying out physical adsorption sedimentation, and removing heavy metal compound sediment by using the inclined plate sedimentation tank;
and a sixth step: coagulation air float
Introducing the sewage from which the heavy metal compound precipitate is removed into an air floatation tank to remove lighter floating organic matters;
the seventh step: physical filtration
Introducing the sewage in the previous step into a quartz sand filter and an active carbon filter tank, and intercepting suspended matters, organic matters, colloidal particles and the like in the sewage by using a physical pressure and physical adsorption method;
eighth step: biofilm ultrafiltration
Intercepting and screening suspended matters and dissolved organic matters in the sewage after the step by using a biological membrane;
the ninth step: detection of
Disinfecting the sewage filtered by the biological membrane, and discharging after the sewage is qualified;
the tenth step: sludge treatment
Ca (OH)2 is added into a sludge concentration tank, the pH value is adjusted to about 10, and a plate-and-frame filter press is used for carrying out filter pressing on the sludge.
2. The submerged ultrafiltration process for the treatment of sewage commonly used in automotive plants according to claim 1, wherein: the coagulation sedimentation is a primary coagulation reaction, the pH value of the coagulation sedimentation treatment is 10-10.5, the reaction tank adopts a plug flow type reaction tank and is divided into three grids, the pH value is adjusted to 10-10.5 by adding alkali into the first grid, CaCl2 is added, the residence time is 15 minutes, FeSO4 is added into the second grid, the residence time is 15 minutes, a coagulant PAM is added into the third grid, the residence time is 7.5 minutes, the mixed solution enters an inclined plate sedimentation tank for solid-liquid separation after the reaction, and the surface load of the inclined plate sedimentation tank is 2m3/m 2. h.
3. The submerged ultrafiltration process for the treatment of sewage commonly used in automotive plants according to claim 1, wherein: the coagulation-floatation process is a reaction tank of a secondary coagulation reaction, a plug flow reaction tank is adopted and divided into three grids, the pH value is adjusted to 8.5-9 by adding acid into the first grid, PAC is added into the second grid, PAM is added into the third grid, solid-liquid separation is carried out in an floatation tank after reaction, the retention time of the secondary reaction tank is 10 minutes, 10 minutes and 5 minutes respectively, and the dissolved air water amount of the floatation tank is 30% of the treated sewage amount.
4. The submerged ultrafiltration process for the treatment of sewage commonly used in automotive plants according to claim 1, wherein: the physical filtration is depth filtration, and the filtration speed of the physical filtration device is controlled to be 10-12m3/(m2 h).
5. The submerged ultrafiltration process for the treatment of sewage commonly used in automotive plants according to claim 1, wherein: the biological membrane ultrafiltration adopts a semi-dead-end filtration system, and an ultrafiltration membrane used by the biological membrane ultrafiltration system adopts a back washing method to remove dirt deposited on the surface of the membrane.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201911013573.7A CN110981076A (en) | 2019-10-23 | 2019-10-23 | Immersed ultrafiltration process for treating common sewage in automobile factory |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201911013573.7A CN110981076A (en) | 2019-10-23 | 2019-10-23 | Immersed ultrafiltration process for treating common sewage in automobile factory |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN110981076A true CN110981076A (en) | 2020-04-10 |
Family
ID=70082228
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201911013573.7A Pending CN110981076A (en) | 2019-10-23 | 2019-10-23 | Immersed ultrafiltration process for treating common sewage in automobile factory |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN110981076A (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN115159743A (en) * | 2022-07-15 | 2022-10-11 | 张彧 | Control method of cleaning equipment and related device |
Citations (8)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101456647A (en) * | 2008-12-19 | 2009-06-17 | 上海依科绿色工程有限公司 | Automobile manufacturer wastewater treatment method |
| CN103739165A (en) * | 2014-01-08 | 2014-04-23 | 新疆德安环保科技有限公司 | Recycling treatment method for automobile coating wastewater |
| CN104876392A (en) * | 2015-05-11 | 2015-09-02 | 苏州瑞钰特自动化科技有限公司 | Coating wastewater treatment process |
| CN104909511A (en) * | 2015-05-11 | 2015-09-16 | 苏州瑞钰特自动化科技有限公司 | Coating wastewater treatment method |
| CN105884148A (en) * | 2016-06-24 | 2016-08-24 | 安徽国能亿盛环保科技有限公司 | Automobile coating sewage treatment process |
| CN105984992A (en) * | 2015-01-31 | 2016-10-05 | 福建省首融环境科技有限公司 | Paint wastewater treatment method |
| CN106746181A (en) * | 2016-11-29 | 2017-05-31 | 长沙南方宇航环境工程有限公司 | A kind of processing method of automobile factory's waste water and application |
| CN109553214A (en) * | 2018-11-08 | 2019-04-02 | 天津磊峰实业有限公司 | A kind of automobile parts production sewage treatment technique |
-
2019
- 2019-10-23 CN CN201911013573.7A patent/CN110981076A/en active Pending
Patent Citations (8)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101456647A (en) * | 2008-12-19 | 2009-06-17 | 上海依科绿色工程有限公司 | Automobile manufacturer wastewater treatment method |
| CN103739165A (en) * | 2014-01-08 | 2014-04-23 | 新疆德安环保科技有限公司 | Recycling treatment method for automobile coating wastewater |
| CN105984992A (en) * | 2015-01-31 | 2016-10-05 | 福建省首融环境科技有限公司 | Paint wastewater treatment method |
| CN104876392A (en) * | 2015-05-11 | 2015-09-02 | 苏州瑞钰特自动化科技有限公司 | Coating wastewater treatment process |
| CN104909511A (en) * | 2015-05-11 | 2015-09-16 | 苏州瑞钰特自动化科技有限公司 | Coating wastewater treatment method |
| CN105884148A (en) * | 2016-06-24 | 2016-08-24 | 安徽国能亿盛环保科技有限公司 | Automobile coating sewage treatment process |
| CN106746181A (en) * | 2016-11-29 | 2017-05-31 | 长沙南方宇航环境工程有限公司 | A kind of processing method of automobile factory's waste water and application |
| CN109553214A (en) * | 2018-11-08 | 2019-04-02 | 天津磊峰实业有限公司 | A kind of automobile parts production sewage treatment technique |
Non-Patent Citations (1)
| Title |
|---|
| 贾素云: "《化工环境科学与安全技术》", 28 February 2009, 国防工业出版社 * |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN115159743A (en) * | 2022-07-15 | 2022-10-11 | 张彧 | Control method of cleaning equipment and related device |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| USRE36915E (en) | Process for sodium sulfide/ferrous sulfate treatment of hexavalent chromium and other heavy metals | |
| CN204824453U (en) | Desulfurization pretreatment of water device that gives up | |
| CN109437454B (en) | Enhanced physicochemical treatment method and device for refined high-salt high-ammonia special oily sewage | |
| KR100957851B1 (en) | Method of water treatment | |
| KR101278230B1 (en) | The method and Appuratus of removing total nitrogen and phosphate in sewage and wastewater using precipitation-agent of rapidity for coagulation an flocculation | |
| CN106380016A (en) | Steel pickling wastewater treatment and reuse method and device | |
| CN107935149B (en) | Sewage and wastewater treatment method and system for coagulation floc backflow | |
| CN107055857A (en) | A kind of coating wastewater cleansing and recycling equipment | |
| CN109626627B (en) | High-salt ash leachate pretreatment method | |
| CN114436481A (en) | Resource recovery process for phosphating wastewater | |
| CN110981076A (en) | Immersed ultrafiltration process for treating common sewage in automobile factory | |
| CN112723658A (en) | Waste paper regeneration papermaking wastewater treatment process | |
| RU2396217C2 (en) | Method of electrochemical purification of meat-processing plant sewage | |
| CN110950468A (en) | Desulfurization wastewater electro-flocculation coupling Fenton oxidation standard-reaching treatment system and method | |
| KR101088148B1 (en) | Electrical neutralization of colloidal particles with speed control how water | |
| CN115367969A (en) | High-concentration water-based ink wastewater treatment method and treatment system | |
| CN206624737U (en) | A kind of organic wastewater reverse osmosis concentrated water oxidation and desalination system | |
| CN111807625B (en) | Treatment method and treatment system for acrylate pressure-sensitive adhesive wastewater | |
| CN108483715A (en) | A kind of processing method of Electroplating Wastewater, nickel | |
| US20170001895A1 (en) | Treatment of wastewater effluent from pulp and paper manufacuring | |
| KR100316298B1 (en) | Fiber Membrane Separation and Activated Sludge Process with Electrolytic Treatement Process of Animal WasteWater | |
| CN211921204U (en) | Sewage treatment device capable of achieving surface IV-type water discharge | |
| CN110902949A (en) | Sewage treatment process and device capable of achieving surface IV-class water discharge | |
| CN1962492A (en) | Process for reclaiming PVC slurry waste water using liquid phase suspension method | |
| KR100341208B1 (en) | Apparatus and method for removing pollutants in outflow water of abandoned mine by surface electrochemical reaction |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| PB01 | Publication | ||
| PB01 | Publication | ||
| SE01 | Entry into force of request for substantive examination | ||
| SE01 | Entry into force of request for substantive examination | ||
| RJ01 | Rejection of invention patent application after publication | ||
| RJ01 | Rejection of invention patent application after publication |
Application publication date: 20200410 |