Purifying and recycling device for treating painting sewage
A technology for coating sewage, purifying and recycling, applied in chemical instruments and methods, filtration separation, separation methods, etc., can solve problems such as environmental pollution and waste of water resources, and achieve the effects of reducing production costs, protecting the environment, and widening the scope of use
Inactive Publication Date: 2019-01-18
KOHWA PRECISION MOLDING (SHANGHAI) CO LTD
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Problems solved by technology
[0003] The existing coating sewage treatment device directly discharges the coating sewage into the huge storage tank for collecting sewage, and some even directly discharges it into the natural environment, which not only causes environmental pollution, but also wastes a lot of precious water resources
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[0018] The technical solution of this patent will be further described in detail below in conjunction with specific embodiments.
[0019] see figure 1 , a purification and recycling device for coating sewage treatment, comprising a sewage multi-stage static filter device 2, the sewage multi-stage static filter device 2 includes a static filter pool 21 and is evenly distributed in the static filter pool 21 Several partitions 22 inside. A plurality of said dividing plates 22 start from close to the sewage feed pipe 1, and the heights of the dividing plates 22 decrease successively;
[0020] Sewage is injected into the static filter tank 21. Due to the setting of the partition plate 22, the inner lower side of the static filter tank 21 can form a static layer, while the upper part is a stratosphere, so that impurities and the like are easily deposited in the static filter tank. 21 to improve the treatment effect of sewage;
[0021] One end of the sewage multi-stage static filt...
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The invention discloses a purifying and recycling device for treating painting sewage and relates to the technical field of sewage treatment. The purifying and recycling device disclosed by the invention has the beneficial effects that a static layer can be formed at the lower side of the inner part of a standing filtering pond, a laminar-flow layer is formed at the upper part of the standing filtering pond, and then impurities and the like are easily deposited at the bottom part of the standing filtering pond, so that the sewage treating effect can be improved; pure water is filled into a water feeding pipe of a painting line by a pure-water drawing pipe, so that recycling of the sewage can be realized and the water resource can be saved; when water in a pure-water storage groove is insufficient, a water supplying pipe is communicated with the water feeding pipe of the painting line by a three-way valve, so that the continuity of production is guaranteed; the structures of the machinery equipment and the like are simple, the water resource can be saved, the production cost can be reduced and the environment can be effectively protected; the purifying and recycling device is strongin practicability, has wide use range in corresponding industrial enterprises, and can be applied to multiple industries such as electrical products, automobile appearance covering parts, decorativeparts and electroplating and the like with spraying manufacture.
Description
technical field [0001] The invention relates to the technical field of sewage treatment, in particular to a purification and recycling device for coating sewage treatment. Background technique [0002] Painting wastewater mainly comes from pre-degreasing, degreasing, surface conditioning, phosphating, passivation and other body pre-treatment processes; cathodic electrophoresis process, intermediate coating, and top coating process. The main toxic and harmful substances contained in wastewater are as follows: Pre-painting treatment: nitrite, phosphate, emulsified oil, surfactant. Primer: low solvent cathodic electrophoretic paint film, lead-free cathodic electrophoretic paint film, pigment, powder, epoxy resin, butanol, ethylene glycol monobutyl ether, isopropanol, dimethylethanolamine, polybutadiene resin, Dimethyl ethanol, paint, etc. Intermediate coating and top coating: xylene, banana water and other organic solvents, paint films, pigments, powders. [0003] Existing c...
Claims
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Login to View More IPC IPC(8): B01D36/04
CPCB01D36/04
Inventor 刘春生
Owner KOHWA PRECISION MOLDING (SHANGHAI) CO LTD