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Coagulant for paint mist and application of coagulant

A paint mist coagulant and reaction technology, applied in the direction of flocculation/sedimentation water/sewage treatment, multi-stage water treatment, water/sludge/sewage treatment, etc., can solve the problem of high price and achieve the effect of obvious price advantage

Inactive Publication Date: 2015-01-28
HUBEI RUIFUYANG CHEM TECH
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  • Abstract
  • Description
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  • Application Information

AI Technical Summary

Problems solved by technology

However, currently commercially available paint mist coagulants are relatively expensive

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0018] This embodiment provides a preparation method and application of a paint mist coagulant. The preparation method includes:

[0019] Preparation of Agent A: Add 15.12 grams of melamine and 20 milliliters of 37wt% formaldehyde solution to a stoppered flask filled with 200 milliliters of water, adjust the pH to 3 with hydrochloric acid, and react at 60°C for 3 hours to obtain A agent solution.

[0020] Preparation of agent B: Take 360 ​​ml of water, add 1.5 grams of anionic polyacrylamide with a molecular weight of 10 million, 1.2 ml of 30wt% sodium hydroxide in sequence, react for 1 hour at 70°C, cool down to 50°C, and add 2.5wt% of Add 40 ml of sodium sulfate, react at constant temperature for 2 hours, and then add 2 g of ammonium bicarbonate to prepare agent B solution.

[0021] Preparation of agent C: Add sodium hydroxide to water to make the concentration of the solution reach any value within the range of 10-30wt%, such as 10%, 15%, 20%, 25%, 30%, etc., and then s...

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Abstract

The invention discloses a coagulant for paint mist and application of the coagulant and belongs to the technical field of industrial paint-containing wastewater treatment. The coagulant for the paint mist comprises an agent A, an agent B and an agent C, wherein the agent A, the agent B and the agent C are used in cooperation, the agent A is a linear high-molecular polymer generated in the mode that melamine reacts with aldehydes, the agent B is an aqueous solution obtained in the mode that anionic polyacrylamide with the molecular weight of 8,000,000 to 10,000,000 is modified through composite sodium salt, the agent C is an aqueous solution of alkaline inorganic compounds, and the composite sodium salt is a mixture of sodium hydroxide, sodium sulfate and ammonium bicarbonate. According to the coagulant for the paint mist, paint-containing wastewater treatment efficiency reaches up to above 95%, about 1.5 yuan is cost for treating a ton of wastewater, 2-3 yuan is cost for treating a ton of wastewater through a coagulant for paint mist currently sold on the market, price is much reduced, and the price advantage is obvious.

Description

technical field [0001] The invention belongs to the technical field of industrial paint-containing wastewater treatment, in particular to a paint mist coagulant and its application. Background technique [0002] About 20-60% of the paint does not adhere to the device during the painting process, and this part of the paint is called overspray paint. These paints contain a large amount of volatile organic solvents that are harmful to human health, and need to be cleaned up in time. If the paint is dropped on the ground, it is difficult to clean up. Therefore, the painting industry usually uses a wet spray booth circulating water system to capture oversprayed paint. Organic solvents are taken out of the outdoors due to the water circulation in indoor and outdoor tanks, reducing the health impact on operators, while overspray paint will adhere to the walls of tanks, pipes and water pumps due to its high viscosity, which will affect the purification of water The normal operation...

Claims

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Application Information

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IPC IPC(8): C02F1/56C02F9/04
CPCC02F1/5236C02F1/5245C02F1/56C02F1/66C02F2301/08
Inventor 程新川陈舟文胜利冯露沈友梅
Owner HUBEI RUIFUYANG CHEM TECH
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