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Low-production-cost polydopamine compound oil paint flocculant

A technology for polydopamine, production costs

Inactive Publication Date: 2017-04-26
TIANCHANG YINHU PAINT
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  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

Yang Shuangshuang obtained a better flocculation strain FL-2 through a series of separation and screening in the article "Study on the Flocculation of Paint Wastewater by Microbial Flocculants". The culture conditions are 30°C, pH 9, shaker speed 160r / min, the carbon source of the culture medium is glucose, the mixed nitrogen source is sodium nitrate, ammonium chloride and urea, the inorganic salt is magnesium sulfate, and gelatin Good flocculation effect was achieved when Bacillus frozen sample was mixed, but the effect was not good when the two kinds of microorganisms were mixed with inorganic flocculants

Method used

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Experimental program
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Effect test

Embodiment Construction

[0021] A polydopamine composite paint flocculant with low production cost comprises the following steps:

[0022] (1) Separation and purification of strains

[0023] Put the paint wastewater in the later stage of treatment into a sterile Erlenmeyer flask, store it at 4°C, and sterilize the seed culture at 121°C. After cooling, take 100 μL of wastewater and inoculate it into 100ml of seed medium, and expand at a constant temperature of 37°C. Cultivate for 24 hours, then dilute the culture solution to 10, 10, 10, 10, 10, and 10 times respectively, and then spread each diluted bacterial suspension on the separation medium, culture at a constant temperature of 37°C for 24 hours, and pick out the cells with good morphology. After the initial isolation of the colonies, the selected bacteria were inoculated in the seed medium, incubated at a constant temperature of 37°C for 24 hours, the culture solution of each bacteria was diluted, separated and purified by streaking, and the final...

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PUM

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Abstract

The invention discloses a low-production-cost polydopamine compound oil paint flocculant which is prepared by the following steps: (1) separation and purification of strains; (2) screening of the strains; (3) fermentation cultivation of the strains; and (4) preparation of compound magnetic microspheres. The flocculant has the beneficial effects that the flocculation speed is high, the settling time is long, the feeding quantity is small, common components in oil paint can be stably coagulated, the wastewater treatment cost can be lowered, and the application prospects are wide.

Description

technical field [0001] The invention relates to the technical field of paint flocculants, in particular to a polydopamine composite paint flocculant with low production cost. Background technique [0002] With the development of the automobile industry and furniture manufacturing industry, the amount of spray paint is increasing, so there will be a lot of paint mist that cannot be applied to the workpiece and become "overspray" paint, and the amount of overspray reaches 25-60 %. These coatings contain a large amount of volatile organic solvents, which endanger human health and seriously pollute the surrounding environment and air. Spraying is a process in which the paint is evenly dispersed into fine particles through a spray gun or a disc atomizer under pressure or centrifugal force, and finally the paint mist particles are applied to the surface of the object. The oversprayed paint mist usually enters the circulating water, and the circulating water is taken out of the r...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C02F3/34C02F1/48C12N1/02
CPCC02F1/488C02F3/34C02F3/348C02F2303/20C02F2305/08C12N1/02
Inventor 祝盆鑫祝秀凤汪鹏程孙巨福戴宇钧
Owner TIANCHANG YINHU PAINT
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