CN103819060B - A kind of waste emulsified mixture, electroplating wastewater, Landfill joint disposal technology - Google Patents
A kind of waste emulsified mixture, electroplating wastewater, Landfill joint disposal technology Download PDFInfo
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- CN103819060B CN103819060B CN201410079850.5A CN201410079850A CN103819060B CN 103819060 B CN103819060 B CN 103819060B CN 201410079850 A CN201410079850 A CN 201410079850A CN 103819060 B CN103819060 B CN 103819060B
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Abstract
The invention discloses a kind of waste emulsified mixture, electroplating wastewater, Landfill joint disposal technology, biological treatment realizes waste emulsified mixture, electroplating wastewater, Landfill joint disposal to utilize breakdown of emulsion and oxidation pre-treatment to add; A kind of waste emulsified mixture of the present invention, electroplating wastewater, Landfill joint disposal technology, the breakdown of emulsion of multiple types, high COD waste emulsified mixture can be realized, waste emulsified mixture, electroplating wastewater, Landfill can be realized dispose in same disposal facility and reach emission standard, facility compact, invest low.
Description
Technical field
The present invention relates to a kind of waste emulsified mixture, electroplating wastewater, Landfill joint disposal technology, belong to hazardous waste disposal technical field.
Background technology
Emulsifying liquid waste water is the common waste water produced in plant produced, is characterized in various in style, COD
croleaginousness concentration is high, and intractability is large; In electroplating wastewater, concentration of metal ions is high; Landfill difficult degradation COD, ammonia-nitrogen content are high; The multipair waste emulsified mixture of existing disposal technology, electroplating wastewater, Landfill are disposed respectively, invest relatively high.
In the prior art, general breakdown of emulsion process has salting-out process, coacervation, acidization, hybrid system etc.
Salting-out process adds ionogen in waste emulsion, makes the hydration that generation is strong, and the free molecule in emulsion is decreased.When electrolyte concentration is increased to a certain degree, just can produce dehydration, thus destroy the hydration layer around oil droplet, also neutralize the electrical of oil droplet simultaneously, destroy its double electrical layers, thus loss of stability, produce agglomeration phenomena.And ionogen can also make the surface tension of oil phase increase, and destroys original balance from another angle.The net result of these effects, makes emulsion produce oil, water stratification.Salting-out process dosage is large, and in water, saltiness is high, brings certain difficulty to sewage purification.
Flocculation agent is dissolved in water, generally all becomes colloidal state and exists, these colloidal state polymers through water dissolution, and in water, the physics chemical action of electrostatic attraction, Van der Waals force, hydrogen bond, ligand etc. produces adsorption phenomena.The polymkeric substance of flocculation agent is all generally long thread-like molecule.These molecules stretched be easily several even a lot of oil droplet adsorb, formed oil droplet chemical bridging produce cohesion; Simultaneously in flocculation agent, particularly some low molecule ionogen, equally also also exist the electrostatic interaction of oil droplet particulate, facilitate oil droplet close to each other and condense.Conventional flocculation agent has alum, poly-aluminium, polyacrylamide, ferrous sulfate etc.
Coacervation feature dosage is few, cost is low but oil is generally poor.
Hybrid system is the comprehensive of salting-out process and coacervation.It has concentrated the advantage of two methods.In fact hybrid system is exactly salting-out process, and difference is the salt comparatively salting-out process much less added; Before adding flocculation agent, oil is not yet separated out, therefore does not need independent oil removing.The feature of hybrid system is that amount of consumption of drugs is medium, and breakdown of emulsion ability is strong, but oil comparatively salting-out process is poor, better than coacervation.
Acidization adds a certain amount of acid exactly in waste emulsion, makes it produce chemical reaction, impels in emulsion to divide to parse lipid acid, because these higher fatty acid are water insoluble, so lose emulsifying capacity, reaches the object of breakdown of emulsion.Use acid can be the spent acid that acid-washed metal part gets off.Its add-on is about 6% of waste emulsion amount.Stir after half an hour, it continues reaction layering to leave standstill 24h, will float over the oily sucking-off on upper strata then lapidation ash about 1%, and carry out neutralizing treatment, and make its pH value bring up between 6 ~ 8, after impurity to be generated all sinks, and water and as clear as crystal.
The kind of metal working fluid is a lot, its composition is also different, cut emulsifying waste water stability high, COD value is high and adopt single flocculation agent process to be difficult to reach the features such as breakdown of emulsion object should to select best treatment process according to the amount of waste liquid, composition, concentration etc., and the mainly how breakdown of emulsion of wherein most critical.
Summary of the invention
(1) technical problem that will solve
In order to solve the problem, the present invention proposes a kind of waste emulsified mixture, electroplating wastewater, Landfill joint disposal technology, realize comprehensive emulsion, electroplating wastewater, the centrally disposing of Landfill, reach the object of degraded COD, ammonia nitrogen and removal heavy metal.
(2) technical scheme
A kind of waste emulsified mixture of the present invention, electroplating wastewater, Landfill joint disposal technology, comprise following step:
1) pending waste water is entered breakdown of emulsion reactor by water pump lifting, add sulfuric acid carry out acidification by chemicals dosing plant, waste water occurs that milk yellow is muddy, and after acidifying, logical steam carries out heat temperature raising to waste water in still, adds a certain amount of ferrous sulfate simultaneously;
2) occur cracking when wastewater temperature is raised to about 80 DEG C waste water emulsified states, holding temperature is constant by adding lime milk solution, adjustment waste water about PH to 9-10, there is ferrous hydroxide flco throw out in water body, add PAM coagulant aids further thoroughly to flocculate to water body, make the further breakdown of emulsion layering of waste water;
3) when seeing that waste water and clear liquid is transparent not muddy, exhaust-valve door bottom reactor is opened after there is obvious demixing phenomenon, mixed solution after breakdown of emulsion is put into 1# equalizing tank, plate-and-frame filter press is entered to the lifting of 1# equalizing tank mud mixture spiral pump and carries out press filtration, press filtration clear liquid is lowered the temperature through over-heat-exchanger, leaving water temperature(LWT) controls at about 30-40, and the waste heat of breakdown of emulsion waste water cooling simultaneously plays to the emulsion entering reactor the effect of preheating by heat exchanging process;
4) after cooling, waste water flows into 2# balancing tank certainly, slight turbid phenomenon (finding that there is this phenomenon in pilot plant test) is there will be along with temperature reduces waste water, further breakdown of emulsion is needed to degrade to 2# equalizing tank waste water, 2# equalizing tank waste water water pump lifting is entered ferrous coagulation basin, add a small amount of ferrous sulfate simultaneously, waste water further with a small amount of limestone vegetation formed ferrous hydroxide flco add PAM make flco become further large after gravity flow enter settling tank and carry out mud-water separation;
5) clear liquid gravity flow enters catalyzed oxidation pump sump, and settling tank base sludge regularly enters sludge sump, processes by sending fixed-end forces station after filter press;
6) after breakdown of emulsion once ferrous coagulation, waste water water body is limpid, waste water COD is also significantly cut down simultaneously, waste water adjusts waste water pH value to 5 ~ 6 with crossing PH setting device after catalyzed oxidation pump sump centralized collection, enter catalyzed oxidation tower by water pump lifting again and carry out catalytic oxidation to waste water, water outlet gravity flow enters subsequent biochemical treatment system;
7) waste water temperature decline after over-heat-exchanger and catalytic treatment again after breakdown of emulsion, residuals temperatures is probably at 30-35 DEG C, this temperature section is utilized comparatively to be applicable to the required temperature range controlled of anaerobic reaction, first waste water enter anaerobic treatment unit and to degrade further COD to waste water, improve wastewater biodegradability, reflux pump is added in the water outlet of anaerobism section, suitably diluting, entering the stable of anaerobism section waste water quality to maintain by controlling the water inlet of effluent recycling comparison anaerobism, by one-level aerobic reaction, part removal is carried out to Organic Pollutants in Wastewater, water outlet is flow automatically further and is entered first stage precipitation tank, the active carbon powder run off carries out settlement separate in first stage precipitation tank, enter in one-level Aerobic Pond with recycle pump backflow bottom settling tank, to keep the stable of one-level aerobic section Powdered Activated Carbon concentration, supernatant liquor enters concurrent oxidation and aquoiysis pond, by concurrent oxidation and aquoiysis pond, waste water is hydrolyzed acidification, the biodegradability of further raising waste water, water outlet gravity flow enters secondary Aerobic Pond, secondary aerobic employing bio-contact oxidation mode, by secondary is aerobic, the organic contamination factor in waste water is carried out sufficient biological degradation, water outlet is carried out muddy water shunting clear liquid by second pond and is entered balancing tank, the backflow of second pond partial sludge enters oxygen compatibility pool, and excess sludge regularly outer row send fixed-end forces station after pressure filter filter-press dehydration.
Further, carry out heavy-metal ion removal and then enter catalyzed oxidation section as long as electroplating wastewater and percolate enter ferrous coagulation section and carry out catalytic oxidation treatment.
Further, anaerobism section adopts ABR traverse baffle anaerobic sludge bed process, after anaerobic reaction, water outlet gravity flow enters one-level Aerobic Pond, the high salt tolerant biology aerobic technique bearing high influent load is adopted at one-level aerobic section, add Powdered Activated Carbon in aerobic biochemical pool as biological bacteria carrier, and inoculate high salt tolerant biological bacteria.
Further, for the heavy metal ion contained in water body, in waste water, add molysite or ferrous salt, make the heavy metal ion in waste water and molysite generate stable ferrite under certain condition, adopt solid-liquid separation technique, heavy-metal ion removal; In the ferritic process of formation, heavy metal ion, by wrapping up, carrying effect secretly, is filled in ferritic lattice, and combines closely, form stable soluble solids.
(3) beneficial effect
The present invention compared with prior art, it has following beneficial effect: a kind of waste emulsified mixture of the present invention, electroplating wastewater, Landfill joint disposal technology, the breakdown of emulsion of multiple types, high COD waste emulsified mixture can be realized, waste emulsified mixture, electroplating wastewater, Landfill can be realized dispose in same disposal facility and reach emission standard, facility compact, invests low.
Accompanying drawing explanation
Fig. 1 is breakdown of emulsion of the present invention and oxidation pre-treatment schema;
Fig. 2 is biological treatment schema of the present invention.
Embodiment
As depicted in figs. 1 and 2, a kind of waste emulsified mixture of the present invention, electroplating wastewater, Landfill joint disposal technology, comprise following step:
1) pending waste water is entered breakdown of emulsion reactor by water pump lifting, add sulfuric acid carry out acidification by chemicals dosing plant, waste water occurs that milk yellow is muddy, and after acidifying, logical steam carries out heat temperature raising to waste water in still, adds a certain amount of ferrous sulfate simultaneously;
2) occur cracking when wastewater temperature is raised to about 80 DEG C waste water emulsified states, holding temperature is constant by adding lime milk solution, adjustment waste water about PH to 9-10, there is ferrous hydroxide flco throw out in water body, add PAM coagulant aids further thoroughly to flocculate to water body, make the further breakdown of emulsion layering of waste water;
3) when seeing that waste water and clear liquid is transparent not muddy, exhaust-valve door bottom reactor is opened after there is obvious demixing phenomenon, mixed solution after breakdown of emulsion is put into 1# equalizing tank, plate-and-frame filter press is entered to the lifting of 1# equalizing tank mud mixture spiral pump and carries out press filtration, press filtration clear liquid is lowered the temperature through over-heat-exchanger, leaving water temperature(LWT) controls at about 30-40, and the waste heat of breakdown of emulsion waste water cooling simultaneously plays to the emulsion entering reactor the effect of preheating by heat exchanging process;
4) after cooling, waste water flows into 2# balancing tank certainly, slight turbid phenomenon (finding that there is this phenomenon in pilot plant test) is there will be along with temperature reduces waste water, further breakdown of emulsion is needed to degrade to 2# equalizing tank waste water, 2# equalizing tank waste water water pump lifting is entered ferrous coagulation basin, add a small amount of ferrous sulfate simultaneously, waste water further with a small amount of limestone vegetation formed ferrous hydroxide flco add PAM make flco become further large after gravity flow enter settling tank and carry out mud-water separation;
5) clear liquid gravity flow enters catalyzed oxidation pump sump, and settling tank base sludge regularly enters sludge sump, processes by sending fixed-end forces station after filter press;
6) after breakdown of emulsion once ferrous coagulation, waste water water body is limpid, waste water COD is also significantly cut down simultaneously, waste water adjusts waste water pH value to 5 ~ 6 with crossing PH setting device after catalyzed oxidation pump sump centralized collection, enter catalyzed oxidation tower by water pump lifting again and carry out catalytic oxidation to waste water, water outlet gravity flow enters subsequent biochemical treatment system;
7) waste water temperature decline after over-heat-exchanger and catalytic treatment again after breakdown of emulsion, residuals temperatures is probably at 30-35 DEG C, this temperature section is utilized comparatively to be applicable to the required temperature range controlled of anaerobic reaction, first waste water enter anaerobic treatment unit and to degrade further COD to waste water, improve wastewater biodegradability, reflux pump is added in the water outlet of anaerobism section, suitably diluting, entering the stable of anaerobism section waste water quality to maintain by controlling the water inlet of effluent recycling comparison anaerobism, by one-level aerobic reaction, part removal is carried out to Organic Pollutants in Wastewater, water outlet is flow automatically further and is entered first stage precipitation tank, the active carbon powder run off carries out settlement separate in first stage precipitation tank, enter in one-level Aerobic Pond with recycle pump backflow bottom settling tank, to keep the stable of one-level aerobic section Powdered Activated Carbon concentration, supernatant liquor enters concurrent oxidation and aquoiysis pond, by concurrent oxidation and aquoiysis pond, waste water is hydrolyzed acidification, the biodegradability of further raising waste water, water outlet gravity flow enters secondary Aerobic Pond, secondary aerobic employing bio-contact oxidation mode, by secondary is aerobic, the organic contamination factor in waste water is carried out sufficient biological degradation, water outlet is carried out muddy water shunting clear liquid by second pond and is entered balancing tank, the backflow of second pond partial sludge enters oxygen compatibility pool, and excess sludge regularly outer row send fixed-end forces station after pressure filter filter-press dehydration.
Wherein, carry out heavy-metal ion removal and then enter catalyzed oxidation section as long as electroplating wastewater and percolate enter ferrous coagulation section and carry out catalytic oxidation treatment; Anaerobism section adopts ABR traverse baffle anaerobic sludge bed process, after anaerobic reaction, water outlet gravity flow enters one-level Aerobic Pond, the high salt tolerant biology aerobic technique bearing high influent load is adopted at one-level aerobic section, add Powdered Activated Carbon in aerobic biochemical pool as biological bacteria carrier, and inoculate high salt tolerant biological bacteria; For the heavy metal ion contained in water body, in waste water, add molysite or ferrous salt, make the heavy metal ion in waste water and molysite generate stable ferrite under certain condition, adopt solid-liquid separation technique, heavy-metal ion removal; In the ferritic process of formation, heavy metal ion, by wrapping up, carrying effect secretly, is filled in ferritic lattice, and combines closely, form stable soluble solids.
Embodiment recited above is only be described the preferred embodiment of the present invention, not limits the spirit and scope of the present invention.Under the prerequisite not departing from design concept of the present invention; the various modification that this area ordinary person makes technical scheme of the present invention and improvement; all should drop into protection scope of the present invention, the technology contents of request protection of the present invention, all records in detail in the claims.
Claims (3)
1. waste emulsified mixture, electroplating wastewater, a Landfill joint disposal method, is characterized in that, comprise following step:
1) pending waste water is entered breakdown of emulsion reactor by water pump lifting, add sulfuric acid carry out acidification by chemicals dosing plant, waste water occurs that milk yellow is muddy, and after acidifying, logical steam carries out heat temperature raising to waste water in still, adds ferrous sulfate simultaneously;
2) occur cracking when wastewater temperature is raised to 80 DEG C of waste water emulsified states, holding temperature is constant by adding lime milk solution, adjustment wastewater pH is to 9-10, there is ferrous hydroxide flco throw out in water body, add PAM coagulant aids further thoroughly to flocculate to water body, make the further breakdown of emulsion layering of waste water;
3) when seeing that waste water and clear liquid is transparent not muddy, exhaust-valve door bottom reactor is opened after there is obvious demixing phenomenon, mixed solution after breakdown of emulsion is put into 1# equalizing tank, plate-and-frame filter press is entered to the lifting of 1# equalizing tank mud mixture spiral pump and carries out press filtration, press filtration clear liquid is lowered the temperature through over-heat-exchanger, leaving water temperature(LWT) controls at 30-40 DEG C, and the waste heat of breakdown of emulsion waste water cooling simultaneously plays to the emulsion entering reactor the effect of preheating by heat exchanging process;
4) after cooling, waste water flows into 2# balancing tank certainly, slight turbid phenomenon is there will be along with temperature reduces waste water, further breakdown of emulsion is needed to degrade to 2# equalizing tank waste water, 2# equalizing tank waste water water pump lifting is entered ferrous coagulation basin, add a small amount of ferrous sulfate simultaneously, waste water further with a small amount of limestone vegetation formed ferrous hydroxide flco add PAM make flco become further large after gravity flow enter settling tank and carry out mud-water separation;
5) clear liquid gravity flow enters catalyzed oxidation pump sump, and settling tank base sludge regularly enters sludge sump, processes by sending fixed-end forces station after filter press;
6) after breakdown of emulsion and ferrous coagulation, waste water water body is limpid, waste water COD is also significantly cut down simultaneously, waste water adjusts waste water ph to 5 ~ 6 by pH regulator device after catalyzed oxidation pump sump centralized collection, enter catalyzed oxidation tower by water pump lifting again and carry out catalytic oxidation to waste water, water outlet gravity flow enters subsequent biochemical treatment system;
7) waste water temperature decline after over-heat-exchanger and catalytic treatment again after breakdown of emulsion, residuals temperatures is probably at 30-35 DEG C, this temperature section is utilized comparatively to be applicable to the required temperature range controlled of anaerobic reaction, first waste water enter anaerobic treatment unit and to degrade further COD to waste water, improve wastewater biodegradability, reflux pump is added in the water outlet of anaerobism section, suitably diluting, entering the stable of anaerobism section waste water quality to maintain by controlling the water inlet of effluent recycling comparison anaerobism, by one-level aerobic reaction, part removal is carried out to Organic Pollutants in Wastewater, water outlet is flow automatically further and is entered first stage precipitation tank, the active carbon powder run off carries out settlement separate in first stage precipitation tank, enter in one-level Aerobic Pond with recycle pump backflow bottom settling tank, to keep the stable of one-level aerobic section Powdered Activated Carbon concentration, supernatant liquor enters concurrent oxidation and aquoiysis pond, by concurrent oxidation and aquoiysis pond, waste water is hydrolyzed acidification, the biodegradability of further raising waste water, water outlet gravity flow enters secondary Aerobic Pond, secondary aerobic employing bio-contact oxidation mode, by secondary is aerobic, the organic contamination factor in waste water is carried out sufficient biological degradation, water outlet is carried out muddy water shunting clear liquid by second pond and is entered balancing tank, the backflow of second pond partial sludge enters oxygen compatibility pool, and excess sludge regularly outer row send fixed-end forces station after pressure filter filter-press dehydration.
2. a kind of waste emulsified mixture according to claim 1, electroplating wastewater, Landfill joint disposal method, it is characterized in that: anaerobism section adopts ABR traverse baffle anaerobic sludge bed process, after anaerobic reaction, water outlet gravity flow enters one-level Aerobic Pond, the biology aerobic technique bearing high influent load is adopted at one-level aerobic section, add Powdered Activated Carbon in aerobic biochemical pool as biological bacteria carrier, and inoculate salt tolerant biological bacteria.
3. a kind of waste emulsified mixture according to claim 1, electroplating wastewater, Landfill joint disposal method, it is characterized in that: for the heavy metal ion contained in water body, molysite or ferrous salt is added in waste water, the heavy metal ion in waste water and molysite is made to generate stable ferrite, adopt solid-liquid separation technique, heavy-metal ion removal; In the ferritic process of formation, heavy metal ion, by wrapping up, carrying effect secretly, is filled in ferritic lattice, and combines closely, form stable soluble solids.
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| CN104628226B (en) * | 2015-01-15 | 2016-06-29 | 常州大学 | Plant's garbage total system |
| CN105366874B (en) * | 2015-09-25 | 2018-02-13 | 广东健恒环境产业有限公司 | Industrial inorganic sewage disposal system |
| CN105502855B (en) * | 2016-01-29 | 2018-04-17 | 安徽汇泽通环境技术有限公司 | A kind of alkalescence demulsification and the method for the system combined processing TAIC productions waste water of hydrolysis catalytic oxidation |
| CN107082526B (en) * | 2017-03-31 | 2020-08-18 | 安徽汇泽通环境技术有限公司 | Pretreatment method of waste emulsion |
| CN117658276B (en) * | 2024-01-31 | 2024-04-23 | 南京艾布纳新材料股份有限公司 | Demulsification treatment device and method for continuous demulsification separation of immersed water |
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