CN103819060A - Integrated disposal technology for waste emulsion liquid, electroplating wastewater and landfill leachate - Google Patents
Integrated disposal technology for waste emulsion liquid, electroplating wastewater and landfill leachate Download PDFInfo
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- CN103819060A CN103819060A CN201410079850.5A CN201410079850A CN103819060A CN 103819060 A CN103819060 A CN 103819060A CN 201410079850 A CN201410079850 A CN 201410079850A CN 103819060 A CN103819060 A CN 103819060A
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Abstract
The invention discloses an integrated disposal technology for waste emulsion liquid, electroplating wastewater and landfill leachate. The integrated disposal of the waste emulsion liquid, electroplating wastewater and landfill leachate can be implemented by utilizing demulsification, oxidation pre-treatment and biological treatment. According to the integrated disposal technology for waste emulsion liquid, electroplating wastewater and landfill leachate, provided by the invention, the demulsification of various waste emulsion liquid with high COD can be implemented, the waste emulsion liquid, the electroplating wastewater and the landfill leachate can be disposed in the same disposal facility to reach the emission standard, the equipment is compact, and the investment is 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 producing 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 processing has salting-out process, coacervation, acidization, hybrid system etc.
Salting-out process is in waste emulsion, to add ionogen, makes to produce strong hydration, and the free molecule in emulsion has been reduced.In the time that electrolyte concentration is increased to a certain degree, just can produce dehydration, thereby destroy oil droplet hydration layer around, also neutralized the electrical of oil droplet simultaneously, destroy its double electrical layers, thereby loss of stability, produce agglomeration phenomena.And ionogen can also make the surface tension of oil phase increase, and has destroyed 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, and generally all become colloidal state through water dissolution and exist, these colloidal state polymers, 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 that stretched are easily the chemical bridging that several even a lot of oil droplets adsorb, form oil droplet and produce cohesion; Simultaneously in flocculation agent, particularly some low molecule ionogen, equally also exist the electrostatic interaction of oil droplet particulate, facilitate oil droplet mutually near 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 that the salt that adds is compared with salting-out process much less; Before adding flocculation agent, oil is not yet separated out, therefore do 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 is poor compared with salting-out process, better than coacervation.
Acidization adds a certain amount of acid exactly in waste emulsion, makes it produce chemical reaction, impels in emulsion point to parse lipid acid, because these higher fatty acid are water insoluble, so the emulsifying capacity of losing reaches the object of breakdown of emulsion.Using acid can be the spent acid that acid-washed metal part gets off.Its add-on is 6% left and right 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 1% left and right, carries out neutralizing treatment, and its pH value is brought up between 6～8, and after impurity to be generated all sinks, water is as clear as crystal.
The kind of metal working fluid is a lot, its composition is also different, cutting emulsifying waste water stability is high, COD value is high and adopt single flocculation agent processing 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 wherein most critical be mainly breakdown of emulsion how.
Summary of the invention
(1) technical problem that will solve
In order to address the above problem, the present invention proposes a kind of waste emulsified mixture, electroplating wastewater, Landfill joint disposal technology, realize centrally disposing of comprehensive emulsion, electroplating wastewater, 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 being entered to breakdown of emulsion reactor by water pump lifting, add sulfuric acid to carry out acidification by chemicals dosing plant, there is milk yellow muddiness in waste water, and after acidifying, logical steam carries out heat temperature raising to waste water in still, adds a certain amount of ferrous sulfate simultaneously;
2) when being raised to 80 ℃ of left and right waste water emulsified states, wastewater temperature occurs cracking, the inflexible mistake of holding temperature adds lime milk solution, adjust waste water PH to 9-10 left and right, there is ferrous hydroxide flco throw out in water body, further add PAM coagulant aids water body is thoroughly flocculated, make the further breakdown of emulsion layering of waste water;
3) when seeing that waste water and clear liquid is transparent not muddy, occur opening reactor bottom exhaust-valve door after obvious demixing phenomenon, mixed solution after breakdown of emulsion is put into 1# equalizing tank, 1# equalizing tank mud mixture is entered to plate-and-frame filter press with spiral pump lifting and carry out press filtration, press filtration clear liquid is lowered the temperature through over-heat-exchanger, leaving water temperature(LWT) is controlled at 30-40 left and right, and the waste heat of breakdown of emulsion waste water cooling simultaneously plays to the emulsion that enters reactor the effect of preheating by heat exchanging process;
4) after cooling, waste water flows into 2# balancing tank certainly, along with reducing waste water, temperature there will be slight turbid phenomenon (finding that there is this phenomenon in pilot plant test), 2# equalizing tank waste water is needed to further breakdown of emulsion degraded, 2# equalizing tank waste water is entered to ferrous coagulation basin by water pump lifting, add a small amount of ferrous sulfate simultaneously, waste water further with in a small amount of lime and form ferrous hydroxide flco add PAM make flco further become 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 bottom mud regularly enters sludge sump, by sending the processing of solid waste treatment station after filter press;
6) through breakdown of emulsion once after ferrous coagulation waste water water body limpid, waste water COD is also significantly cut down simultaneously, waste water is adjusted 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 waste water is carried out to catalytic oxidation, water outlet gravity flow enters follow-up 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 ℃, utilize this temperature section to be applicable to the temperature range of the required control of anaerobic reaction, first waste water enter anaerobic treatment unit to the waste water COD that further degrades, improve wastewater biodegradability, reflux pump is added in the water outlet of anaerobism section, suitably dilutes by controlling the water inlet of effluent recycling comparison anaerobism, enters the stable of anaerobism section waste water quality to maintain, by one-level aerobic reaction, Organic Pollutants in Wastewater is carried out to part removal, water outlet further gravity flow enters one-level settling tank, the active carbon powder running off carries out settlement separate in one-level settling tank, reflux and enter in one-level Aerobic Pond with recycle pump in settling tank bottom, 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 to the waste water acidification that is hydrolyzed, further improve the biodegradability of waste water, water outlet gravity flow enters secondary Aerobic Pond, the aerobic employing bio-contact oxidation of secondary mode, by secondary is aerobic, the organic contamination factor in waste water is carried out to sufficient biological degradation, water outlet is carried out muddy water shunting clear liquid by second pond and is entered balancing tank, second pond part sludge reflux enters oxygen compatibility pool, and excess sludge regularly outer row send solid waste treatment station after pressure filter filter-press dehydration.
Further, carry out heavy-metal ion removal and then enter catalyzed oxidation section and carry out catalytic oxidation treatment as long as electroplating wastewater and percolate enter ferrous coagulation section.
Further, anaerobism section adopts ABR traverse baffle anaerobic sludge bed process, after anaerobic reaction, water outlet gravity flow enters one-level Aerobic Pond, adopt the high salt tolerant biology aerobic technique that can bear high influent load at one-level aerobic section, in aerobic biochemical pool, add Powdered Activated Carbon as biological bacteria carrier, and inoculate high salt tolerant biological bacteria.
Further, for the heavy metal ion containing in water body, in waste water, add molysite or ferrous salt, make heavy metal ion and molysite in waste water 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, and forms 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, can realize the breakdown of emulsion of multiple types, high COD waste emulsified mixture, can realize waste emulsified mixture, electroplating wastewater, Landfill disposes and reaches emission standard in same disposal facility, 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 being entered to breakdown of emulsion reactor by water pump lifting, add sulfuric acid to carry out acidification by chemicals dosing plant, there is milk yellow muddiness in waste water, and after acidifying, logical steam carries out heat temperature raising to waste water in still, adds a certain amount of ferrous sulfate simultaneously;
2) when being raised to 80 ℃ of left and right waste water emulsified states, wastewater temperature occurs cracking, the inflexible mistake of holding temperature adds lime milk solution, adjust waste water PH to 9-10 left and right, there is ferrous hydroxide flco throw out in water body, further add PAM coagulant aids water body is thoroughly flocculated, make the further breakdown of emulsion layering of waste water;
3) when seeing that waste water and clear liquid is transparent not muddy, occur opening reactor bottom exhaust-valve door after obvious demixing phenomenon, mixed solution after breakdown of emulsion is put into 1# equalizing tank, 1# equalizing tank mud mixture is entered to plate-and-frame filter press with spiral pump lifting and carry out press filtration, press filtration clear liquid is lowered the temperature through over-heat-exchanger, leaving water temperature(LWT) is controlled at 30-40 left and right, and the waste heat of breakdown of emulsion waste water cooling simultaneously plays to the emulsion that enters reactor the effect of preheating by heat exchanging process;
4) after cooling, waste water flows into 2# balancing tank certainly, along with reducing waste water, temperature there will be slight turbid phenomenon (finding that there is this phenomenon in pilot plant test), 2# equalizing tank waste water is needed to further breakdown of emulsion degraded, 2# equalizing tank waste water is entered to ferrous coagulation basin by water pump lifting, add a small amount of ferrous sulfate simultaneously, waste water further with in a small amount of lime and form ferrous hydroxide flco add PAM make flco further become 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 bottom mud regularly enters sludge sump, by sending the processing of solid waste treatment station after filter press;
6) through breakdown of emulsion once after ferrous coagulation waste water water body limpid, waste water COD is also significantly cut down simultaneously, waste water is adjusted 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 waste water is carried out to catalytic oxidation, water outlet gravity flow enters follow-up 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 ℃, utilize this temperature section to be applicable to the temperature range of the required control of anaerobic reaction, first waste water enter anaerobic treatment unit to the waste water COD that further degrades, improve wastewater biodegradability, reflux pump is added in the water outlet of anaerobism section, suitably dilutes by controlling the water inlet of effluent recycling comparison anaerobism, enters the stable of anaerobism section waste water quality to maintain, by one-level aerobic reaction, Organic Pollutants in Wastewater is carried out to part removal, water outlet further gravity flow enters one-level settling tank, the active carbon powder running off carries out settlement separate in one-level settling tank, reflux and enter in one-level Aerobic Pond with recycle pump in settling tank bottom, 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 to the waste water acidification that is hydrolyzed, further improve the biodegradability of waste water, water outlet gravity flow enters secondary Aerobic Pond, the aerobic employing bio-contact oxidation of secondary mode, by secondary is aerobic, the organic contamination factor in waste water is carried out to sufficient biological degradation, water outlet is carried out muddy water shunting clear liquid by second pond and is entered balancing tank, second pond part sludge reflux enters oxygen compatibility pool, and excess sludge regularly outer row send solid waste treatment station after pressure filter filter-press dehydration.
Wherein, carry out heavy-metal ion removal and then enter catalyzed oxidation section and carry out catalytic oxidation treatment as long as electroplating wastewater and percolate enter ferrous coagulation section; Anaerobism section adopts ABR traverse baffle anaerobic sludge bed process, after anaerobic reaction, water outlet gravity flow enters one-level Aerobic Pond, adopt the high salt tolerant biology aerobic technique that can bear high influent load at one-level aerobic section, in aerobic biochemical pool, add Powdered Activated Carbon as biological bacteria carrier, and inoculate high salt tolerant biological bacteria; For the heavy metal ion containing in water body, in waste water, add molysite or ferrous salt, make heavy metal ion and molysite in waste water 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, and forms stable soluble solids.
Embodiment recited above is described the preferred embodiment of the present invention, not the spirit and scope of the present invention is limited.Do not departing under the prerequisite of design concept of the present invention; various modification and improvement that this area ordinary person makes technical scheme of the present invention; all should drop into protection scope of the present invention, the technology contents of request protection of the present invention, has all been documented in claims.
Claims (4)
1. waste emulsified mixture, electroplating wastewater, a Landfill joint disposal technology, is characterized in that, comprises following step:
1) pending waste water being entered to breakdown of emulsion reactor by water pump lifting, add sulfuric acid to carry out acidification by chemicals dosing plant, there is milk yellow muddiness in waste water, and after acidifying, logical steam carries out heat temperature raising to waste water in still, adds a certain amount of ferrous sulfate simultaneously;
2) when being raised to 80 ℃ of left and right waste water emulsified states, wastewater temperature occurs cracking, the inflexible mistake of holding temperature adds lime milk solution, adjust waste water PH to 9-10 left and right, there is ferrous hydroxide flco throw out in water body, further add PAM coagulant aids water body is thoroughly flocculated, make the further breakdown of emulsion layering of waste water;
3) when seeing that waste water and clear liquid is transparent not muddy, occur opening reactor bottom exhaust-valve door after obvious demixing phenomenon, mixed solution after breakdown of emulsion is put into 1# equalizing tank, 1# equalizing tank mud mixture is entered to plate-and-frame filter press with spiral pump lifting and carry out press filtration, press filtration clear liquid is lowered the temperature through over-heat-exchanger, leaving water temperature(LWT) is controlled at 30-40 left and right, and the waste heat of breakdown of emulsion waste water cooling simultaneously plays to the emulsion that enters reactor the effect of preheating by heat exchanging process;
4) after cooling, waste water flows into 2# balancing tank certainly, along with reducing waste water, temperature there will be slight turbid phenomenon (finding that there is this phenomenon in pilot plant test), 2# equalizing tank waste water is needed to further breakdown of emulsion degraded, 2# equalizing tank waste water is entered to ferrous coagulation basin by water pump lifting, add a small amount of ferrous sulfate simultaneously, waste water further with in a small amount of lime and form ferrous hydroxide flco add PAM make flco further become 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 bottom mud regularly enters sludge sump, by sending the processing of solid waste treatment station after filter press;
6) through breakdown of emulsion once after ferrous coagulation waste water water body limpid, waste water COD is also significantly cut down simultaneously, waste water is adjusted 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 waste water is carried out to catalytic oxidation, water outlet gravity flow enters follow-up 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 ℃, utilize this temperature section to be applicable to the temperature range of the required control of anaerobic reaction, first waste water enter anaerobic treatment unit to the waste water COD that further degrades, improve wastewater biodegradability, reflux pump is added in the water outlet of anaerobism section, suitably dilutes by controlling the water inlet of effluent recycling comparison anaerobism, enters the stable of anaerobism section waste water quality to maintain, by one-level aerobic reaction, Organic Pollutants in Wastewater is carried out to part removal, water outlet further gravity flow enters one-level settling tank, the active carbon powder running off carries out settlement separate in one-level settling tank, reflux and enter in one-level Aerobic Pond with recycle pump in settling tank bottom, 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 to the waste water acidification that is hydrolyzed, further improve the biodegradability of waste water, water outlet gravity flow enters secondary Aerobic Pond, the aerobic employing bio-contact oxidation of secondary mode, by secondary is aerobic, the organic contamination factor in waste water is carried out to sufficient biological degradation, water outlet is carried out muddy water shunting clear liquid by second pond and is entered balancing tank, second pond part sludge reflux enters oxygen compatibility pool, and excess sludge regularly outer row send solid waste treatment station after pressure filter filter-press dehydration.
2. a kind of waste emulsified mixture according to claim 1, electroplating wastewater, Landfill joint disposal technology, is characterized in that: carry out heavy-metal ion removal and then enter catalyzed oxidation section and carry out catalytic oxidation treatment as long as electroplating wastewater and percolate enter ferrous coagulation section.
3. a kind of waste emulsified mixture according to claim 1, electroplating wastewater, Landfill joint disposal technology, 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, adopt the high salt tolerant biology aerobic technique that can bear high influent load at one-level aerobic section, in aerobic biochemical pool, add Powdered Activated Carbon as biological bacteria carrier, and inoculate high salt tolerant biological bacteria.
4. a kind of waste emulsified mixture according to claim 1, electroplating wastewater, Landfill joint disposal technology, it is characterized in that: for the heavy metal ion containing in water body, in waste water, add molysite or ferrous salt, make heavy metal ion and molysite in waste water 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, and forms stable soluble solids.
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Cited By (5)
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| CN104628226A (en) * | 2015-01-15 | 2015-05-20 | 常州大学 | Integrated farm waste treatment system |
| CN105366874A (en) * | 2015-09-25 | 2016-03-02 | 张荣斌 | Industrial inorganic sewage treatment system |
| CN105502855A (en) * | 2016-01-29 | 2016-04-20 | 安徽汇泽通环境技术有限公司 | Method for performing combined treatment on TAIC industrial wastewater through alkaline demulsification and hydrolysis-contact oxidation system |
| CN107082526A (en) * | 2017-03-31 | 2017-08-22 | 安徽汇泽通环境技术有限公司 | A kind of preprocess method of waste emulsified mixture |
| CN117658276A (en) * | 2024-01-31 | 2024-03-08 | 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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| Publication number | Priority date | Publication date | Assignee | Title |
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| CN107082526A (en) * | 2017-03-31 | 2017-08-22 | 安徽汇泽通环境技术有限公司 | A kind of preprocess method of waste emulsified mixture |
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| CN117658276A (en) * | 2024-01-31 | 2024-03-08 | 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 |
| 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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| CB03 | Change of inventor or designer information |
Inventor after: Han Qingjie Inventor after: Wang Tingtao Inventor after: Guo Bei Inventor after: Jia Shijie Inventor after: Chen Feng Inventor before: Han Qingjie Inventor before: Hu Jiukun |
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| TR01 | Transfer of patent right |
Effective date of registration: 20170630 Address after: 266000 Shandong Province, Qingdao is a city of Yanan Road No. 39 Patentee after: QINGDAO XINTIANDI ENVIRONMENTAL PROTECTION CO., LTD. Address before: 266600, No. 1, Xintiandi Road, Jiangshan Town, Laixi, Shandong, Qingdao Patentee before: QINGDAO NEW WORLD SOLID WASTES INTEGRATED MANAGEMENT CO., LTD. |