Paint mist coagulant

A paint mist coagulant and decolorizing agent technology, which is used in flocculation/sedimentation water/sewage treatment, chemical instruments and methods, water/sludge/sewage treatment, etc. problems such as high viscosity, to achieve the effect of clear and transparent water quality, long water exchange cycle and low moisture content

Pending Publication Date: 2020-03-24
浙江九合环保科技有限公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

At present, the methods used to clean overspray paint are mainly mechanical scraping method and adding paint mist coagulant method, and the former can not completely remove the paint mist due to the high viscosity of the paint. This method has low treatment efficiency, although the latter can improve the paint mist removal rate Reach more than 90%, but because the price of commercially available paint mist coagulant to treat wastewater is 3 yuan / ton of wastewater, the cost is relatively high, and it is not easy to promote and use

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0011] Implementation example one: get 1000g of lacquer-containing wastewater, add 0.1g of sodium hydroxide, and fully stir and dissolve the melamine polymer 0.1g / L; then get 0.2g of the additive, add it to the wastewater, fully stir and dissolve; then take polyacrylamide 0.001g ( Polyacrylamide needs to be pre-prepared into a 0.3% aqueous solution before adding), add it to the paint-containing wastewater, and fully stir; the paint-containing wastewater treated with the paint mist coagulant has clear water quality and no peculiar smell. The floating rate of paint slag is high and the viscosity is completely removed.

Embodiment 2

[0012] Implementation example two: get 1000g of lacquer-containing wastewater, add 0.5g of sodium hydroxide, and fully stir and dissolve melamine polymer 0.1g / L; then add 0.03g of isothiazolinone, fully stir and dissolve; get additive 0.4g, add in the wastewater, Fully stir to dissolve; take 0.005g of polyacrylamide (pre-prepared into 0.3% aqueous solution before adding the polyacrylamide), add it to the paint-containing wastewater, and fully stir. The paint-containing wastewater treated by the paint mist coagulant has clear water quality and no peculiar smell. The floating rate of paint slag is high and the viscosity is completely removed.

Embodiment 3

[0013] Implementation example three: get 1000g of lacquer-containing wastewater, add sodium hydroxide 0.8g melamine polymer 0.1g / L, fully stir and dissolve; then add isothiazolinone 0.06g, fully stir and dissolve; get additive 0.6g, add in the wastewater, Thoroughly stir to dissolve; take 0.01g of polyacrylamide (pre-prepared as 0.3% aqueous solution before adding polyacrylamide), add it into the paint-containing wastewater, and stir thoroughly. The paint-containing wastewater treated by the paint mist coagulant has clear water quality and no peculiar smell. The floating rate of paint slag is high and the viscosity is completely removed.

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PUM

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Abstract

The invention provides a paint mist coagulant, which is especially suitable for paint-containing wastewater treatment after a spraying process in various industries. The composite coagulant comprisesthe following main components by concentration: 0.1-0.8g/L sodium hydroxide; 0-0.06g/L isothiazolinone; 0.05-0.1g/L of a melamine polymer; 0.001-0.01g/L of polyacrylamide; 0.2-0.6g/L an additive; 0.05-0.1g/L a sterilizing agent; and 0.01-0.1g/L a decolorizing agent. The paint mist coagulant has the advantages of high flocculation speed, low consumption, thorough destruction to overspray paint andhigh efficiency; the paint slag floating rate reaches 98%, and the water content is low; the water is clear, transparent, environment-friendly, free of harmful substances and free of peculiar smell; the paint mist coagulant is effective for any solvent type or aqueous paint; and the control range is wide, and the circulating water change period is long.

Description

technical field [0001] The invention relates to an industrial wastewater treatment agent, in particular to a paint mist coagulant. Background technique [0002] With the development of modern coating technology, the amount of paint is increasing day by day. Usually, a large part of paint cannot be painted on the workpiece and becomes overspray paint, which seriously pollutes the surrounding air and environment. In order to effectively protect the environment and clean the construction site, a wet spray booth circulating water system is usually used in the painting industry to capture overspray paint. However, due to the viscosity of the paint, it will adhere to the water pump, pipes and fan blades, block the nozzles, etc., which will affect the normal operation of the purification system, and also affect the quality of spraying, reduce the purification efficiency of circulating water, and increase the number of replacements of circulating water. In order to maintain the per...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C02F1/52C02F1/54C02F1/56C02F1/50C02F103/14
CPCC02F1/50C02F1/5236C02F1/54C02F1/56C02F2103/14
Inventor 刘军
Owner 浙江九合环保科技有限公司
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