CN103910410A - Method for removing paint in spraying circulating water - Google Patents
Method for removing paint in spraying circulating water Download PDFInfo
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- CN103910410A CN103910410A CN201410069275.0A CN201410069275A CN103910410A CN 103910410 A CN103910410 A CN 103910410A CN 201410069275 A CN201410069275 A CN 201410069275A CN 103910410 A CN103910410 A CN 103910410A
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- reaction tank
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- recirculated water
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Abstract
The invention discloses a method for removing paint in spraying circulating water. The method comprises the following steps: 1) pumping spraying circulating water uniformly mixed under stirring into a first reaction tank (1) by using a pump; 2) adding a drug mixed solution containing a viscosity eliminating agent into the first reaction tank (1) and carrying out stirring at a faster speed at first and a slower speed next with a paddle wheel agitator (2) so as to allow the viscosity eliminating agent to eliminate viscosity of paint water, thereby forming paint slag; 3) allowing the paint slag to enter into a second reaction tank (2) with waste water through an intermediate pore channel located between the first reaction tank (1) and the second reaction tank (2), adding a special gelatinizing agent with alginate as a main component into the second reaction tank (2) and carrying out slow stirring to allow the paint slag to form large-particle floc through aggregation; and 4) allowing waste water containing the large-particle floc into a settling basin (5) with an inclined plate (6) through the pore channel, bump into the inclined plate (6) in the settling basin (5) and then automatically settle to a bottom paint slag chamber (7), removing an organic solvent in clear waste water at an upper layer and pumping the clear waste water into the spraying circulating water for reuse.
Description
Technical field
The invention belongs to waste water treatment engineering field, particularly a kind of method of removing sticky paint in spraying recirculated water.
Background technology
At present, the various article that use in people's life, pass through spray treatment more, by the reasonable change to the composition that sprays paint, make it can not only beautify article, can also be anti-oxidant, moistureproof playing to a certain degree, the effect such as protection against corrosion, therefore spray-painting plant is widely used in each factory.A large amount of over-sprayed paint fogs that workpiece produces in spraying process and waste organic solvent gas add flocculation agent after recirculated water absorbs, and organic exhaust gas and over-sprayed paint fog can discharge with recirculated water in the lump with the paint slag that recirculated water fully contacts rear formation, if these paint slags are processed not in time, can reduce recirculated water work-ing life, improve recirculated water replacement frequency, increased use cost.How factory directly carries out the processing of painting slag in recirculated water in major cycle tank at present, the method is not easy to isolated paint slag to discharge, and therefore needs regular discharge recirculated water, and processes painting slag in major cycle tank, workload is large, and has caused a large amount of wastes of water resources.
Summary of the invention
For the weak point of the method for painting in current above-mentioned removal spraying recirculated water, the invention provides the method for painting in the removal spraying recirculated water that a kind of reagent cost is low, removal paint slag is effective, manual operation probability is low.
The invention provides a kind of method of painting in spraying recirculated water of removing, wherein, implement by following processing step:
Step 1: pump is drawn to the spraying recirculated water stirring in the first reaction tank 1;
Step 2: in described the first reaction tank 1, add the medicament mixing solutions containing broken glutinous agent, with the first rapid stirring 5h of paddle agitator 2, then low rate mixing 0.4h, described broken glutinous agent is abolished paint stickiness and is formed paint slag;
Step 3: paint slag enters in described the second reaction tank 2 by the duct in the middle of described the first reaction tank 1 and the second reaction tank 2 with waste water, be the special jelling agent of alginates to adding main component in described the second reaction tank 2, slowly stir after 2h, paint slag is gathered into macrobead glue plumage;
Step 4: the waste water that contains macrobead glue plumage is by described the second reaction tank 2 and enter described settling bowl 5 with the duct in the middle of the settling bowl 5 of swash plate, strike described settling bowl 5 inner swash plates 6, automatic sedimentation is to the paint grit chamber 7 of bottom, paint slag outlet and connect sludge pump described paint grit chamber 7, and macrobead glue plumage is drawn to water extracter; Add organic oxidizing agent to remove organic solvent to upper strata clarified wastewater, more whether up to standard by the upper strata primary water of special test set detection removal organic solvent, return in described spraying circulating water pool and recycle if up to standard, do re-treatment if not up to standard.
Preferably, the method for painting in described removal spraying recirculated water, wherein, blower fan blasts air in spraying circulating water pool and stirs and spray recirculated water.
Preferably, the method for painting in described removal spraying recirculated water, wherein, the medicament mixing solutions composition adding in described the first reaction tank 1 is except containing brokenly glutinous agent, also comprise ph adjusting agent, water quality finings, broken glutinous agent is the stickiness of abolishing paint water, and water quality finings makes waste water quality clarification.
Preferably, the method for painting in described removal spraying recirculated water, wherein, the ph adjusting agent adding in described the first reaction tank 1 makes the ph that sprays recirculated water be adjusted to 8～9.
Preferably, the method for painting in described removal spraying recirculated water, wherein, the composition of the special jelling agent adding in described the second reaction tank 2 also comprises: water and glycerine.Because place reaction system is water quality system, the water in jelling agent and glycerine contribute to jelling agent and contain paint slag waste water suspension liquid miscible, make to paint slag small-particle in waste water suspension liquid and are gathered in maximum efficiency macrobead glue plumage.
Preferably, the method for painting in described removal spraying recirculated water, wherein, described organic oxidizing agent is the mixing solutions of oxalyl chloride and dimethyl sulfoxide (DMSO), the organic solvent in the primary water of oxidation upper strata.
Preferably, the method of painting in described removal spraying recirculated water, wherein, in described the first reaction tank 1, the fast rotating speed of paddle agitator is 115～120rpm, low-rotate speed is 75～80rpm, first fast rotating speed is the contact area in order to increase paint water and medicament mixing solutions, makes to paint water and abolishes stickiness gathering lacquering slag, and adopting afterwards low-rotate speed is in order to make the paint solid impurity particle of assembling do not stirred loose.
Preferably, the method for painting in described removal spraying recirculated water, wherein, in described the second reaction tank 2, stirrer rotating speed is 55～60rpm, stirring makes to paint slag and contacts with special jelling agent, makes to paint slag small-particle and assembles, and reduces stirring velocity and is not stirred loose in order to make to assemble macrobead paint refuse lac plumage.
Preferably, the method for painting in described removal spraying recirculated water, wherein, whether the upper strata primary water that detects removal organic solvent is up to standard, returns in described spraying circulating water pool and recycles if up to standard, does re-treatment if not up to standard.
Preferably, the device that in described removal spraying recirculated water, paint uses, wherein, described settling bowl 5 be empty capsid structure, and its interior multiple swash plates are equidistantly and are arranged in parallel, and the height at described swash plate top is lower than the height at described settling bowl 5 tops.
Compared with prior art, a kind of method of painting in spraying recirculated water of removing provided by the invention has following some advantage: (1) technical process is simple, can add medicament according to the species selectivity of paint; (2) paint slag is salvaged automatically, reduces cost of labor; (3) dehydrating amount of paint slag reaches 80%, reduces solid waste treatment capacity, thereby has reduced solid waste processing cost; (4) remove the limpid free from extraneous odour of circulating water quality after paint slag, can guarantee that spraying recirculated water recycles for a long time.
Accompanying drawing explanation
Fig. 1 is the schematic diagram that paints using appts in removal spraying recirculated water of the present invention.
Embodiment
Below in conjunction with accompanying drawing, the present invention is described in further detail, to make those skilled in the art can implement according to this with reference to specification sheets word.
The invention provides a kind of method of painting in spraying recirculated water of removing, implement by following processing step:
Step 1: pump is drawn to the spraying recirculated water stirring in the first reaction tank 1;
Step 2: add containing the medicament mixing solutions that breaks glutinous agent in described the first reaction tank 1, with the first rapid stirring 5h of paddle agitator 2, then low rate mixing 0.4h makes brokenly glutinous agent abolish paint stickiness formation paint slag;
Step 3: paint slag enters in described the second reaction tank 2 by the duct in the middle of described the first reaction tank 1 and the second reaction tank 2 with waste water, be the special jelling agent of alginates to adding main component in described the second reaction tank 2, slowly stir after 2h, paint slag is gathered into macrobead glue plumage;
Step 4: the waste water that contains macrobead glue plumage is by described the second reaction tank 2 and enter described settling bowl 5 with the duct in the middle of the settling bowl 5 of swash plate, strike described settling bowl 5 inner swash plates 6, automatic sedimentation is to the paint grit chamber 7 of bottom, paint slag outlet and connect sludge pump described paint grit chamber 7, and macrobead glue plumage is drawn to water extracter; Add organic oxidizing agent to remove organic solvent to upper strata clarified wastewater, more whether up to standard by the upper strata primary water of special test set detection removal organic solvent, return in described spraying circulating water pool and recycle if up to standard, do re-treatment if not up to standard.
Comprise brokenly glutinous agent, ph adjusting agent, water quality finings to the medicament mixing solutions adding in the first reaction tank 1, broken glutinous agent is the stickiness of abolishing paint water, and ph adjusting agent makes the ph that sprays recirculated water be adjusted to 8～9; Water quality finings makes waste water quality clarification, special jelling agent is the mixing solutions of water, glycerine and alginates, in waste water suspension liquid, paint slag small-particle and be gathered into macrobead glue plumage, organic oxidizing agent is the mixing solutions of oxalyl chloride and dimethyl sulfoxide (DMSO), the organic solvent in the primary water of oxidation upper strata.
In the first reaction tank 1, the fast rotating speed of paddle agitator is 115～120rpm, low-rotate speed is 75～80rpm, first fast rotating speed is the contact area in order to increase paint water and medicament mixing solutions, makes to paint water and abolishes stickiness gathering lacquering slag, and adopting afterwards low-rotate speed is in order to make the paint solid impurity particle of assembling do not stirred loose; In the second reaction tank 2, stirrer rotating speed is 55～60rpm, and stirring makes to paint slag and contacts with special jelling agent, makes to paint slag small-particle and assembles, and reduces stirring velocity and is not stirred loose in order to make to assemble macrobead paint refuse lac plumage.
Fig. 1 is for painting used device in described removal spraying recirculated water, wherein, the first reaction tank 1, the second reaction tank 3, settling bowl 5 are arranged in order in same cavity housing, between the body of each pond, weld partition wall, and partition wall top is a little less than the top of cavity shell wall side.Wherein, the first reaction tank 1 and the second reaction tank 2, on the partition wall of the second reaction tank 2 and settling bowl 5, be all provided with duct, be convenient to containing the circulation of paint slag waste water, and the first reaction tank 1, the second reaction tank 3, settling bowl 5 is uncovered structure, be convenient to circulating water treatment effect to observe, thereby adjustment chemical feeding quantity, avoid unnecessary waste, the interior multiple swash plates that are equidistantly arranged in parallel of settling bowl 5 simultaneously, the height at described swash plate top is lower than the height at described settling bowl 5 tops, paint pulp water enters settling bowl 5 by the second reaction tank 3, paint slag impinges upon on the inclined paralled plates in settling bowl 5, the gathering of paint slag is deposited in the paint grit chamber 7 that is positioned at settling bowl 5 bottoms, the outlet of paint grit chamber connects sludge pump, sludge pump the other end access outer end treatment unit water extracter, to paint a slag processed lacquering blob of slag, upper strata clarified wastewater adds oxygenant, remove in waste water after organic solvent, and settling bowl 5 tops set out the mouth of a river 8 and go out for upper strata clean water overflow, whether the upper strata clear water that detection overflow is gone out is up to standard, pump is drawn in described spraying recirculated water and recycles, do re-treatment if not up to standard.
Specific embodiment
1) blower fan blasts air in spraying circulating water pool, and the paint slag sinking at the bottom of pond obtains uniform stirring, then by pump, the paint pulp water in circulating water pool is drawn in the first reaction tank 1;
2) to adding brokenly glutinous agent, ph adjusting agent, water quality finings in the first reaction tank 1, carry out first rapid stirring 5h with paddle agitator, then low rate mixing 0.4h, paint is abolished stickiness and is formed paint slag;
3) paint slag enters in described the second reaction tank 3 by the duct in the middle of described the first reaction tank 1 and the second reaction tank 3 with waste water, be the special jelling agent of alginates to adding main component in described the second reaction tank 3, slowly stir 2h, make to paint slag and be gathered into macrobead glue plumage.
4) macrobead glue plumage enters the settling bowl 5 with swash plate with paint water by passage, strike on described settling bowl inner swash plate 6, automatic sedimentation is to the paint grit chamber 7 of bottom, the outlet of paint grit chamber connects sludge pump, sludge pump the other end access outer end treatment unit water extracter, will paint a slag processed lacquering blob of slag; Upper strata clarified wastewater adds organic oxidizing agent, in removal waste water, after organic solvent, returns in described spraying circulating water pool and recycles.
Although embodiment of the present invention are open as above, but it is not restricted to listed utilization in specification sheets and embodiment, it can be applied to various applicable the field of the invention completely, for those skilled in the art, can easily realize other modification, therefore do not deviating under the universal that claim and equivalency range limit, the present invention is not limited to specific details and illustrates here and the legend of describing.
Claims (10)
1. remove a method of painting in spraying recirculated water, it is characterized in that, implement by following processing step:
Step 1: pump is drawn to the spraying recirculated water stirring in the first reaction tank (1);
Step 2: in described the first reaction tank (1), add the medicament mixing solutions containing broken glutinous agent, with the first rapid stirring 5h of paddle agitator (2), then low rate mixing 0.4h, described broken glutinous agent is abolished paint stickiness and is formed paint slag;
Step 3: paint slag enters in described the second reaction tank (2) by described the first reaction tank (1) and the duct in the middle of the second reaction tank (2) with waste water, be the special jelling agent of alginates to adding main component in described the second reaction tank (2), slowly stir after 2h, paint slag is gathered into macrobead glue plumage;
Step 4: the waste water that contains macrobead glue plumage enters described settling bowl (5) by described the second reaction tank (2) and with the duct in the middle of the settling bowl (5) of swash plate, strike described settling bowl (5) inner swash plate (6), automatic sedimentation is to the paint grit chamber (7) of bottom, described paint grit chamber (7) paint slag outlet connects sludge pump, and macrobead glue plumage is drawn to water extracter; Add organic oxidizing agent to remove organic solvent to upper strata clarified wastewater, pump is drawn to the upper strata primary water of removing organic solvent in described spraying recirculated water and recycles again.
2. the method for painting in removal spraying recirculated water as claimed in claim 1, is characterized in that, blower fan blasts air in spraying circulating water pool and stirs and spray recirculated water.
3. the method for painting in removal spraying recirculated water as claimed in claim 1, is characterized in that, the medicament mixing solutions composition adding in described the first reaction tank (1), except containing brokenly glutinous agent, also comprises ph adjusting agent, water quality finings.
4. the method for painting in removal spraying recirculated water as claimed in claim 3, is characterized in that, the ph adjusting agent adding in described the first reaction tank (1) makes the ph that sprays recirculated water be adjusted to 8～9.
5. the method for painting in removal spraying recirculated water as claimed in claim 1, is characterized in that, the composition of the special jelling agent adding in described the second reaction tank (2) also comprises: water and glycerine.
6. the method for painting in removal spraying recirculated water as claimed in claim 3, is characterized in that, described organic oxidizing agent is the mixing solutions of oxalyl chloride and dimethyl sulfoxide (DMSO).
7. the method for painting in removal spraying recirculated water as claimed in claim 1, is characterized in that, in described the first reaction tank (1), the fast rotating speed of paddle agitator is 115～120rpm, and low-rotate speed is 75～80rpm.
8. the method for painting in removal spraying recirculated water as claimed in claim 1, is characterized in that, in described the second reaction tank (2), stirrer rotating speed is 55～60rpm.
9. the method for painting in removal spraying cycle number as claimed in claim 1, is characterized in that, whether the upper strata primary water that detects removal organic solvent is up to standard, returns in described spraying circulating water pool and recycles if up to standard, does re-treatment if not up to standard.
10. the device that in removal spraying recirculated water as claimed in claim 1, paint uses, it is characterized in that, described settling bowl (5) is empty capsid structure, multiple swash plates in it are equidistantly and are arranged in parallel, and the height at described swash plate top is lower than the height at described settling bowl (5) top.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201410069275.0A CN103910410B (en) | 2014-02-27 | 2014-02-27 | A kind of method removing coating cycles oil-in-water paint |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201410069275.0A CN103910410B (en) | 2014-02-27 | 2014-02-27 | A kind of method removing coating cycles oil-in-water paint |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN103910410A true CN103910410A (en) | 2014-07-09 |
| CN103910410B CN103910410B (en) | 2016-01-20 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201410069275.0A Expired - Fee Related CN103910410B (en) | 2014-02-27 | 2014-02-27 | A kind of method removing coating cycles oil-in-water paint |
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| Country | Link |
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| CN (1) | CN103910410B (en) |
Cited By (6)
| Publication number | Priority date | Publication date | Assignee | Title |
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| 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 |
| CN108503094A (en) * | 2018-06-13 | 2018-09-07 | 昆山新地源环保科技有限公司 | A kind of box integrated multi-stage processing equipment of sewage disposal |
| CN108609782A (en) * | 2018-05-17 | 2018-10-02 | 台州骊威环保科技有限公司 | A kind of environment protection oil paint waste treatment device |
| CN109052718A (en) * | 2018-08-31 | 2018-12-21 | 吉力水性新材料科技（珠海）有限公司 | A kind of wastewater treatment method of water paint spraying application |
| CN110130285A (en) * | 2019-06-24 | 2019-08-16 | 湖北工业大学 | One kind removing algae system and method |
| CN114262084A (en) * | 2021-11-17 | 2022-04-01 | 安徽信陆电子科技有限公司 | Coating wastewater treatment method |
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| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| 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 |
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| CN114262084B (en) * | 2021-11-17 | 2024-04-23 | 安徽信陆电子科技有限公司 | Coating wastewater treatment method |
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| CN103910410B (en) | 2016-01-20 |
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