CN102603108B - Circulating water treatment system of wet-type spray booth and treatment method - Google Patents
Circulating water treatment system of wet-type spray booth and treatment method Download PDFInfo
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- CN102603108B CN102603108B CN201210082311.8A CN201210082311A CN102603108B CN 102603108 B CN102603108 B CN 102603108B CN 201210082311 A CN201210082311 A CN 201210082311A CN 102603108 B CN102603108 B CN 102603108B
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Abstract
The invention discloses a circulating water treatment system of a wet-type spray booth, which comprises a grid pond, an regulating pond, a chemical feeding pond, a magnetic separating pond and a settling pond; the inner part of the adjusting pond is provided with a water outlet pump, and the bottom part of the regulating pond is provided with a stirrer; the regulating pond is communicated with a first chemical feeding device through a chemical feeding pipeline; the bottom part of the chemical feeding pond is provided with a stirrer, and the chemical feeding pond is communicated with a second chemical feeding device through a chemical feeding pipeline; the inner part of the magnetic separating pond is provided with a rotary magnetic disk, and the magnetic separating pond is communicated with a magnetic seed recycling device through a paint slag discharging pipeline at the bottom part of the magnetic separating pond; the settling pond is communicated with a third chemical feeding device through a chemical feeding pipeline and communicated with a sludge thickener through a discharging pipeline at the bottom part of the settling pond, and a circulating pump is arranged in the settling pond; and the magnetic seed recycling device is communicated with the chemical feeding pond and the sludge thickener through pipelines respectively, and the sludge thickener is communicated with the regulating pond through a pipeline. In circulating water treated by the wet-type spray booth circulating water treatment system disclosed by the invention, the turbidity removal ratio reaches 80-90%, and the chemical oxygen demand removal rate can reach 75-80%.
Description
One, technical field:
The present invention relates to a kind of Waste Water Treatment and treatment process, particularly relate to a kind of wet type paint spray booth circular water treating system and treatment process.
Two, background technology:
Traditional mainly contains containing coating cloud organic wastewater purifying pretreatment unit and treatment process: the water curtain sprinkling chamber that 1. spray painting equipment is equipped with; 2. large-scale paint spray booth adopts the moisture film processing mode of pit type; 3. the dry type fibrous filter net that paint spray booth is equipped with; (4) paint spray booth is equipped with outside pre-processing device, and dry filter is separately set.These dry types or wet type processing device all can be removed coating cloud to a certain extent above, but cannot meet the requirement of organic waste water coating cloud content restriction.There is following shortcoming in traditional coating cloud pre-processing device and treatment process: (1) paint spray booth be equipped with except coating cloud device processes efficiency lower, can not reach the pretreated requirement of organic wastewater purifying; (2) simple wet type or dry treatment method are difficult to reach the effect of high-efficient purification; (3) paint spray booth is supporting is difficult to maintain normal operation because of maintaining and equipment self problem except coating cloud equipment.
Three, summary of the invention:
Technical problem to be solved by this invention is: wet type paint spray booth circular water treating system and treatment process that paint particle in a kind of efficient removal paint spray booth recirculated water, reduction turbidity and chemical oxygen demand (COD) are provided.
The technical scheme that the present invention takes for technical solution problem is:
A kind of wet type paint spray booth circular water treating system, described wet type paint spray booth circular water treating system comprises grating tank, equalizing tank, dosing pond, magnetic separation separate tank and settling tank, between described grating tank, equalizing tank, dosing pond, magnetic separation separate tank and settling tank, links together successively by pipeline; Described equalizing tank inside is provided with out water pump, and equalizing tank bottom is provided with equalizing tank agitator, and equalizing tank is communicated with the first medicine machine by drug feeding pipeline; Bottom, described dosing pond is provided with dosing pond agitator, and dosing pond is communicated with the second medicine machine by drug feeding pipeline; Described magnetic separation separate tank inside is provided with spinning disk, and magnetic separation separate tank is communicated with magnetic kind recovery system by the outer discharge pipe of paint slag of bottom; Described settling tank is communicated with the 3rd medicine machine by drug feeding pipeline, and settling tank is communicated with sludge thickener by the outer discharge pipe of bottom, in described settling tank, is provided with recycle pump.
Described magnetic kind recovery system is communicated with dosing pond and sludge thickener by pipeline respectively.
Described sludge thickener is communicated with equalizing tank by pipeline.
The treatment process of utilizing wet type paint spray booth circular water treating system recited above to process recirculated water, its concrete technology step is as follows:
1., after wet type spray room recirculated water has absorbed and sprayed the central over-sprayed paint fog in room, first by grating tank, the effect of grating tank is to hold back sewage central large-scale suspended substance and floating matter, alleviates the load of subsequent disposal;
2. sewage enters equalizing tank after by grating tank, and the residence time of sewage in equalizing tank, between 0.5～1.5h, adds pH adjusting agent by the first medicine machine to sewage, makes the pH value of sewage reach the index request that subsequent disposal needs;
3. sewage is pumped in dosing pond by going out water pump from equalizing tank, in the sewage in dosing pond, add lacquer mist coagulant B agent by the second medicine machine, dosing is provided with agitator in pond, after the magnetic kind of medicament, sewage and recovery is fully mixed, lacquer mist coagulant B agent by the effect of catching of adsorption bridging, net by the paint particle in water and magnetic kind formation magnetic agglomerated together paint slag;
4. in dosing pond, enter in magnetic separation separate tank containing the water outlet of the paint slag that is magnetic, magneticaction by spinning disk is adsorbed onto magnetic paint slag on spinning disk, then take circulating water body out of by the turning handle magnetic paint slag of spinning disk, by scraper plate, the magnetic paint slag on spinning disk is struck off again, to reach the object of decontamination cycle water; Magnetic paint slag enters in magnetic kind recovery system, and the magnetic kind of recovery is back to recycle in dosing pond, and paint slag enters thickening in sludge thickener;
5. the water outlet in magnetic separation separate tank enters settling tank, and the effect of settling tank is to be precipitated out not painting completely slag in the separation of magnetic separation separate tank, further guarantees the water quality of recirculated water; The paint slag being precipitated out enters thickening in sludge thickener; In settling tank, add lacquer mist coagulant A agent by the 3rd medicine machine, the recirculated water that contains lacquer mist coagulant A agent enters in wet type paint spray booth and recycles;
6. paint slag after sludge thickener is concentrated, concentrated solution is back to circular treatment in equalizing tank;
7. after wet type paint spray booth circular water treating system is processed, the turbidity removal rate in recirculated water reaches 80%～90%, and the clearance of chemical oxygen demand (COD) reaches 75%～80%.
Wherein: the lacquer mist coagulant B agent of step described in is 3. polyacrylamide flocculation agent, or is modified starch series flocculation agent, or is modified-cellulose class flocculation agent.The lacquer mist coagulant A agent of step described in is 5. polymerize aluminum chloride coagulating agent, or is polyferric chloride coagulating agent, or is bodied ferric sulfate coagulating agent.
Total dosage of described lacquer mist coagulant A agent and lacquer mist coagulant B agent is 1 ‰ of waste water total amount～10 ‰.
The ratio that adds between described lacquer mist coagulant A agent and lacquer mist coagulant B agent is 1: 1～5.
Detection index before and after paint spray booth circulating water treatment is as following table:
Can find out by upper table: the recirculated water that process wet type paint spray booth circular water treating system of the present invention and disposal methods are crossed, its turbidity removal rate can reach 80%～90%, and the clearance of chemical oxygen demand (COD) can reach 75%～80%.
Four, accompanying drawing explanation:
Fig. 1 is the structural representation of wet type paint spray booth circular water treating system of the present invention.
Fig. 2 is the process flow sheet for the treatment of process of the present invention.
Five, embodiment:
Below in conjunction with accompanying drawing, the present invention is further illustrated:
Embodiment 1: referring to Fig. 1, a kind of wet type paint spray booth circular water treating system, comprise grating tank 1, equalizing tank 2, dosing pond 3, magnetic separation separate tank 4 and settling tank 5, between described grating tank 1, equalizing tank 2, dosing pond 3, magnetic separation separate tank 4 and settling tank 5, link together by pipeline successively; Be provided with out water pump 8 in equalizing tank 2 inside, equalizing tank 2 bottoms are provided with equalizing tank agitator 7, and equalizing tank 2 is communicated with the first medicine machine 14 by drug feeding pipeline; Be provided with dosing pond agitator 9 in 3 bottoms, dosing pond, dosing pond 3 is communicated with the second medicine machine 13 by drug feeding pipeline; Be provided with spinning disk 10 in magnetic separation separate tank 4 inside, magnetic separation separate tank 4 is communicated with magnetic kind recovery system 16 by the outer discharge pipe of paint slag of bottom; Settling tank 5 is communicated with the 3rd medicine machine 12 by drug feeding pipeline, and settling tank 5 is communicated with sludge thickener 15 by the outer discharge pipe of bottom, is provided with recycle pump 11 in settling tank 5.
Magnetic kind recovery system 16 is communicated with dosing pond 3 and sludge thickener 15 by pipeline respectively; Sludge thickener 15 is communicated with equalizing tank 2 by pipeline.
Embodiment 2: the concrete technology step of utilizing the wet type paint spray booth circular water treating system described in embodiment 1 to process waste water is as follows:
1., after wet type spray room recirculated water has absorbed and sprayed the central over-sprayed paint fog in room, first by grating tank 1, the effect of grating tank 1 is to hold back sewage central large-scale suspended substance and floating matter, alleviates the load of subsequent disposal;
2. sewage enters equalizing tank 2 after by grating tank 1, and the residence time of sewage in equalizing tank 2, between 0.5～1.5h, adds pH adjusting agent by the first medicine machine 14 to sewage, makes the pH of sewage reach the index request that subsequent disposal needs;
3. sewage is pumped into dosing pond 3 from equalizing tank 2, in the sewage in dosing pond 3, add lacquer mist coagulant B agent by the second medicine machine 13, in dosing pond 3, be provided with agitator 9, after the magnetic kind of medicament, sewage and recovery is fully mixed, lacquer mist coagulant B agent by the effect of catching of adsorption bridging, net by the paint particle in water and magnetic kind formation magnetic agglomerated together paint slag;
4. in dosing pond 3, enter in magnetic separation separate tank 4 containing the water outlet of the paint slag that is magnetic, magneticaction by spinning disk 10 is adsorbed onto magnetic paint slag on spinning disk 10, then take circulating water body out of by the turning handle magnetic paint slag of spinning disk 10, by scraper plate, the magnetic paint slag on disk is struck off again, to reach the object of decontamination cycle water.Magnetic paint slag enters in magnetic kind recovery system 16, and the magnetic kind of recovery is back to recycle in dosing pond 3, and paint slag enters thickening in sludge thickener 15;
5. the water outlet in magnetic separation separate tank 4 enters settling tank 5, and the effect of settling tank 5 is to be precipitated out not painting completely slag in the separation of magnetic separation separate tank, further guarantees the water quality of recirculated water.The paint slag being precipitated out enters thickening in sludge thickener 15.In settling tank 5, add lacquer mist coagulant A agent by the 3rd medicine machine 12, the recirculated water that contains lacquer mist coagulant A agent enters in wet type paint spray booth and recycles;
6. paint slag after sludge thickener 15 is concentrated, water ratio can reach 75%～90%, and the concentrated solution in sludge thickener 15 is back to circular treatment in equalizing tank 2;
7. after the present invention processes, the turbidity removal rate in recirculated water can reach 80%～90%, and the clearance of chemical oxygen demand (COD) can reach 75%～80%.
Claims (2)
1. a treatment process for wet type paint spray booth recirculated water, its concrete technology step is as follows:
1., after wet type paint spray booth recirculated water has absorbed the over-sprayed paint fog in the middle of paint spray booth, first by grating tank (1), the effect of grating tank (1) is large-scale suspended substance and the floating matter of holding back in the middle of sewage, alleviates the load of subsequent disposal;
2. sewage enters equalizing tank (2) after by grating tank (1), the residence time of sewage in equalizing tank (2) is between 0.5～1.5h, add pH adjusting agent by the first medicine machine (14) to sewage, make the pH value of sewage reach the index request that subsequent disposal needs;
3. sewage is pumped into dosing pond (3) by going out water pump (8) from equalizing tank (2), in the sewage in dosing pond, add lacquer mist coagulant B agent by the second medicine machine (13), in dosing pond (3), be provided with agitator (9), after the magnetic kind of medicament, sewage and recovery is fully mixed, lacquer mist coagulant B agent by the effect of catching of adsorption bridging, net by the paint particle in water and magnetic kind formation magnetic agglomerated together paint slag; Wherein: described lacquer mist coagulant B agent is polyacrylamide flocculation agent, or is modified starch series flocculation agent, or be modified-cellulose class flocculation agent;
4. in dosing pond (3), enter in magnetic separation separate tank (4) containing the water outlet of the paint slag that is magnetic, magneticaction by spinning disk (10) is adsorbed onto magnetic paint slag on spinning disk (10), then take circulating water body out of by the turning handle magnetic paint slag of spinning disk (10), by scraper plate, the magnetic paint slag on spinning disk (10) is struck off again, to reach the object of decontamination cycle water; Magnetic paint slag enters in magnetic kind recovery system (16), and the magnetic kind of recovery is back to recycle in dosing pond (3), and paint slag enters thickening in sludge thickener (15);
5. the water outlet in magnetic separation separate tank (4) enters settling tank (5), and the effect of settling tank (5) is to be precipitated out not painting completely slag in magnetic separation separate tank (4) separation, further guarantees the water quality of recirculated water; The paint slag being precipitated out enters thickening in sludge thickener (15); In settling tank (5), add lacquer mist coagulant A agent by the 3rd medicine machine (12), the recirculated water that contains lacquer mist coagulant A agent enters in wet type paint spray booth and recycles; Wherein: described lacquer mist coagulant A agent is polymerize aluminum chloride coagulating agent, or is polyferric chloride coagulating agent, or is bodied ferric sulfate coagulating agent;
6. paint slag after sludge thickener (15) is concentrated, concentrated solution is back to circular treatment in equalizing tank (2);
7. after wet type paint spray booth circular water treating system is processed, the turbidity removal rate in recirculated water reaches 80～90%, and the clearance of chemical oxygen demand (COD) reaches 75～80%;
Step 3. with step 5. in, total dosage of described lacquer mist coagulant A agent and lacquer mist coagulant B agent is 1 ‰ of waste water total amount～10 ‰, the ratio that adds between lacquer mist coagulant A agent and lacquer mist coagulant B agent is 1: 1～5.
2. the treatment process of wet type paint spray booth recirculated water according to claim 1, is characterized in that: between described grating tank (1), equalizing tank (2), dosing pond (3), magnetic separation separate tank (4) and settling tank (5), link together successively by pipeline; Described equalizing tank (2) inside is provided with out water pump (8), equalizing tank (2) bottom is provided with equalizing tank agitator (7), and equalizing tank (2) is communicated with the first medicine machine (14) by drug feeding pipeline; Bottom, described dosing pond (3) is provided with dosing pond agitator (9), and dosing pond (3) are communicated with the second medicine machine (13) by drug feeding pipeline; Described magnetic separation separate tank (4) inside is provided with spinning disk (10), and magnetic separation separate tank (4) is communicated with magnetic kind recovery system (16) by the outer discharge pipe of paint slag of bottom; Described settling tank (5) is communicated with the 3rd medicine machine (12) by drug feeding pipeline, settling tank (5) is communicated with sludge thickener (15) by the outer discharge pipe of bottom, is provided with recycle pump (11) in described settling tank (5); Described magnetic kind recovery system (16) is communicated with dosing pond (3) and sludge thickener (15) by pipeline respectively; Described sludge thickener (15) is communicated with equalizing tank (2) by pipeline.
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| CN201210082311.8A CN102603108B (en) | 2012-03-27 | 2012-03-27 | Circulating water treatment system of wet-type spray booth and treatment method |
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| CN201210082311.8A CN102603108B (en) | 2012-03-27 | 2012-03-27 | Circulating water treatment system of wet-type spray booth and treatment method |
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| CN102603108B true CN102603108B (en) | 2014-05-21 |
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Families Citing this family (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| KR20160106168A (en) * | 2014-03-24 | 2016-09-09 | 하쿠토 가부시키가이샤 | Recirculated wet-coating booth water treatment agent and treatment method |
| CN104549863A (en) * | 2014-12-23 | 2015-04-29 | 安徽友顺木业有限公司 | Absorption device after paint spraying of furniture |
| CN107540071A (en) * | 2017-07-04 | 2018-01-05 | 浙江索奥环境技术有限公司 | A kind of coating cloud waste water purification device |
| CN107540065A (en) * | 2017-07-04 | 2018-01-05 | 浙江索奥环境技术有限公司 | A kind of coating cloud flocculating and purifying device |
| CN109205824A (en) * | 2017-07-06 | 2019-01-15 | 广东新会中集特种运输设备有限公司 | The processing system of aqueous paint waste water and the processing method for using the processing system |
| CN107445361A (en) * | 2017-08-02 | 2017-12-08 | 奇瑞汽车股份有限公司 | One kind spray painting circular water treating system and its purification technique |
| CN110040870B (en) * | 2019-04-03 | 2021-11-16 | 东莞市三人行环境科技有限公司 | Method for treating paint spraying wastewater |
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