CN103112966A - Recovery treating method for treating wastewater before coating sheet metal part - Google Patents
Recovery treating method for treating wastewater before coating sheet metal part Download PDFInfo
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- CN103112966A CN103112966A CN2013100588786A CN201310058878A CN103112966A CN 103112966 A CN103112966 A CN 103112966A CN 2013100588786 A CN2013100588786 A CN 2013100588786A CN 201310058878 A CN201310058878 A CN 201310058878A CN 103112966 A CN103112966 A CN 103112966A
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Abstract
The invention discloses a recovery treating method for treating wastewater before coating a sheet metal part. The recovery treating method comprises the following steps: adding 1 to 15 parts by mass of aluminium polychlorid to 100 to 3000 parts by mass of wastewater treated before coating at the normal temperature; uniformly stirring; standing for 24 hours, thus obtaining recycle water and precipitate; separating the recycle water from the precipitate; and pressing the precipitate into a solid waste through a filter press. According to the recovery treating method, a certain amount of aluminium polychlorid is correspondingly added to the wastewater produced during treating before coating the sheet metal part and is uniformly stirred to realize the reaction between the added aluminium polychlorid and the impurities in the wastewater to obtain the precipitate, thus realizing the separation treatment of the wastewater, the separated recycle water can be recycled, and the precipitate is pressed into the solid waste by the filter press. Compared with the prior art, the recovery treating method has the advantages that the recycle of the wastewater treated before coating is realized, and the solid waste small in size and convenient to transport is produced, so that the cost of treating the wastewater before coating is greatly reduced as well as reducing the manufacture cost of an enterprise.
Description
Technical field:
The present invention relates to wastewater processing technology, what be specifically related to is a kind of sheet metal component spraying pre-treatment waste water reclamation treatment process.
Background technology:
Panel beating is for a kind of comprehensive cold machining process of metal sheet (usually below 6mm), comprise cut, rush/cut/compound, folding, welding, riveted joint, splicing, moulding (as body of a motor car) etc., its significant feature is exactly the Same Part consistency of thickness.Sheet metal component is exactly the thin plate handware, the part of namely processing by means such as punching press, bending, stretchings.
The sheet metal component surface is sprayed paint baking, can reach and prevent from getting rusty and oxidation resistant purpose.Sheet metal component before spraying baking vanish, need to be removed rust and the greasy dirt on surface at present, carries out afterwards the phosphatization epithelium and processes; so that plate layer protecting film on the sheet metal component surface; anti-oxidation strengthens the sticking power of its baking vanish simultaneously, make the spraying baking vanish can close attachment on the sheet metal component surface.
But at present in surface degreasing dirt, rust cleaning and phosphatization epithelium treating processes to sheet metal component, need to use chemical medicinal liquid, can produce a large amount of waste water after processing by chemical medicinal liquid, the wastewater treatment company that at present normally is transported to specialty for the processing mode of this waste water in industry processes, but volume is large, transportation cost is high because waste water takies, and the problems such as processing cost height of waste water, greatly increased the manufacturing cost of sheet metal component manufacturing enterprise.
Summary of the invention:
In view of the above problems, the object of the present invention is to provide a kind of sheet metal component spraying pre-treatment waste water reclamation treatment process, the waste water that produces by to sheet metal component spraying pre-treatment the time is processed, to form the solid-state castoff of small volume, and the reuse water after processing utilizes again, thereby greatly reduced the cost of wastewater treatment and the manufacturing cost of enterprise.
For achieving the above object, the present invention is mainly by the following technical solutions:
A kind of sheet metal component spraying pre-treatment waste water reclamation treatment process, comprise: at normal temperatures, the polymerize aluminum chloride of 1 ~ 15 mass parts is added in the spraying pre-treatment waste water of 100 ~ 3000 mass parts, stir, and standing 24 hours, form reuse water and throw out, afterwards reuse water is separated with throw out, and by pressure filter, throw out is pressed into solid-state castoff.
Preferably, the mass ratio of described polymerize aluminum chloride and spraying pre-treatment waste water is between 1:200 ~ between 1: 100.
A certain amount of polymerize aluminum chloride of corresponding interpolation in the waste water that the present invention produces when sheet metal component sprays pre-treatment, and stir, the polymerize aluminum chloride of interpolation and the impurity in waste water are reacted, form throw out, thereby realize the separating treatment to waste water, reuse water after separation can utilize again, and throw out is pressed into solid-state castoff by pressure filter.Compared with prior art, the recycling of waste water when the present invention has realized the spraying pre-treatment, and the formation volume is little, the solid-state castoff of convenient transportation, has greatly reduced the processing cost of the front waste water of spraying and the manufacturing cost of enterprise.
Embodiment:
For setting forth thought of the present invention and purpose, the present invention is described further below in conjunction with specific embodiment.
Core concept of the present invention is: a kind of sheet metal component spraying pre-treatment waste water reclamation treatment process is provided, by adding polymerize aluminum chloride in the waste water that produces after processing to the dirt of sheet metal component surface degreasing, rust cleaning and phosphatization epithelium, make the impurity reaction in polymerize aluminum chloride and waste water, produce throw out, waste water is separated into solid-state castoff and reuse water.
Wherein the specific embodiment of the invention is as follows: at first sheet metal component is sprayed the effluent storage of 100 ~ 3000 mass parts that produce in pretreatment process in reaction tank, then under the normal temperature state, add the polymerize aluminum chloride of 1 ~ 15 mass parts in this reaction tank, wastewater quality in polymerize aluminum chloride and reaction tank is than between 1:200 ~ 1:100 herein, in the present embodiment, preferred polymeric aluminum chloride is 15 mass parts (kilograms), waste water is 3000 mass parts (kilograms), and stir, then standing 24 hours.
Due to the hydroxide ion bridging action of polymerize aluminum chloride and the polymerization of multivalent anions, can produce the inorganic polymer that molecular weight is large, electric charge is higher, therefore it has strong charge neutrality effect, in hydrolysate, suspended substance is had good bridge formation adsorption and to the selective adsorption effect of dissolved matter water-borne glue body material, the polymerize aluminum chloride that the present invention adds in the waste water can effectively be removed the impurity in waste water, form more macromolecular throw out, thereby reach the effect that separates waste water.
Add polymerize aluminum chloride and after standing 24 hours in waste water, can form reuse water and throw out, can test the reuse water that forms this moment by the PH test paper, if its pH value reaches 7, wastewater treatment has been completed in expression, the reuse water of this moment can satisfy production and application, can carry out the Separation and Recovery utilization; And the throw out after separating can be suppressed by pressure filter, with the solid-state castoff of formation small volume, thereby is convenient to transport and follow-up processing.
The present invention sprays in the waste water that produces in pretreatment process to sheet metal component, add polymerize aluminum chloride according to mass ratio, make greasy dirt, iron rust and other chemical medicinal liquid compositions in polymerize aluminum chloride and waste water neutralize and adsorb, to form the macromole throw out, and make the water in waste water be neutralized to neutrality, realize that throw out separates with the reuse water of neutralization.
The invention solves the waste water that produces in the spraying of sheet metal component in present industry pretreatment process, need to process by professional wastewater treatment company, the problem that existing transportation and processing cost are high has reduced the processing cost of waste water.
More than that a kind of sheet metal component spraying pre-treatment waste water reclamation treatment process provided by the present invention is described in detail, used specific case herein structural principle of the present invention and embodiment are set forth, above embodiment just is used for helping to understand method of the present invention and core concept thereof; Simultaneously, for one of ordinary skill in the art, according to thought of the present invention, all will change in specific embodiments and applications, in sum, this description should not be construed as limitation of the present invention.
Claims (2)
1. a sheet metal component sprays pre-treatment waste water reclamation treatment process, it is characterized in that comprising: at normal temperatures, the polymerize aluminum chloride of 1 ~ 15 mass parts is added in the spraying pre-treatment waste water of 100 ~ 3000 mass parts, stir, and standing 24 hours, form reuse water and throw out, afterwards reuse water is separated with throw out, and by pressure filter, throw out is pressed into solid-state castoff.
2. sheet metal component spraying pre-treatment waste water reclamation treatment process according to claim 1, is characterized in that the mass ratio of described polymerize aluminum chloride and spraying pre-treatment waste water is between 1:200 ~ 1:100.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2013100588786A CN103112966A (en) | 2013-02-25 | 2013-02-25 | Recovery treating method for treating wastewater before coating sheet metal part |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2013100588786A CN103112966A (en) | 2013-02-25 | 2013-02-25 | Recovery treating method for treating wastewater before coating sheet metal part |
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| CN103112966A true CN103112966A (en) | 2013-05-22 |
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| Application Number | Title | Priority Date | Filing Date |
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| CN2013100588786A Pending CN103112966A (en) | 2013-02-25 | 2013-02-25 | Recovery treating method for treating wastewater before coating sheet metal part |
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Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
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| CN105060551A (en) * | 2015-07-24 | 2015-11-18 | 启东市爱尔镀环保设备有限公司 | Zeolite wastewater treatment method |
| CN105314756A (en) * | 2014-06-23 | 2016-02-10 | 张卫东 | Zero-emission treatment method of work piece pre-treatment waste water in sheet metal spraying factory |
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| CN102020373A (en) * | 2009-09-15 | 2011-04-20 | 上海宝钢工程技术有限公司 | Process for treating phosphate coating wastewater of steel pipes |
| JP4689186B2 (en) * | 2004-04-13 | 2011-05-25 | オルガノ株式会社 | Fluorine-containing water treatment method |
| JP2012148265A (en) * | 2010-12-27 | 2012-08-09 | Mitsubishi Materials Corp | Method and device for recovering calcium fluoride |
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| JP4689186B2 (en) * | 2004-04-13 | 2011-05-25 | オルガノ株式会社 | Fluorine-containing water treatment method |
| CN101168463A (en) * | 2006-10-23 | 2008-04-30 | 宝山钢铁股份有限公司 | Method for treating manganese-series phosphorized waste water |
| CN101100339A (en) * | 2007-07-26 | 2008-01-09 | 胡建平 | Process for reclaiming and treating phosphorization sewage |
| CN102020373A (en) * | 2009-09-15 | 2011-04-20 | 上海宝钢工程技术有限公司 | Process for treating phosphate coating wastewater of steel pipes |
| JP2012148265A (en) * | 2010-12-27 | 2012-08-09 | Mitsubishi Materials Corp | Method and device for recovering calcium fluoride |
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Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105314756A (en) * | 2014-06-23 | 2016-02-10 | 张卫东 | Zero-emission treatment method of work piece pre-treatment waste water in sheet metal spraying factory |
| CN105060551A (en) * | 2015-07-24 | 2015-11-18 | 启东市爱尔镀环保设备有限公司 | Zeolite wastewater treatment method |
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Application publication date: 20130522 |