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A purification device and purification method for spray paint process wastewater

A purification device and waste water technology, applied in chemical instruments and methods, separation methods, waste paint treatment, etc., can solve the problems of incomplete settling effect, loss of removal of organic solvents in paint exhaust gas, etc.

Active Publication Date: 2021-08-06
TANGSHAN HONGLI HARDWARE TOOLS
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

The settling effect of the current settling device is not complete, and the settled waste water also contains a certain amount of organic solvents. If this waste water is directly recycled, after many cycles, the organic solvents in the waste water will be enriched and saturated in the water. , the circulating wastewater loses the ability to remove organic solvents in the paint exhaust gas

Method used

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  • A purification device and purification method for spray paint process wastewater
  • A purification device and purification method for spray paint process wastewater

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Embodiment Construction

[0020] Below in conjunction with accompanying drawing, the present invention will be further described:

[0021] Such as figure 1 and figure 2 As shown, the purifying device includes a paint slag settler 1 , and the paint slag settler 1 includes a shell 2 . The bottom of the shell is set in an inverted cone shape, and the other sides can be set in a rectangular shape. Leave water inlet 3 on the left side plate of housing, be provided with water outlet 4 on the right side plate, be provided with waste slag outlet 5 on the taper of bottom, valve is housed on the waste slag outlet 5. The waste water flows to the water outlet 4 through the water inlet 3, and the paint slag is separated out through the waste residue outlet 5, wherein the inverted conical shape is beneficial to better separate the paint slag. A plurality of upper blocking plates 6 are arranged on the inner side of the top plate of the housing, and the upper blocking plates are fixedly connected with the top plate...

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Abstract

The invention discloses a purification device and a purification method for waste water in a painting process. The purification device comprises a paint slag settler, the water outlet of the paint slag settler is connected with the water inlet of a water pump, and the water outlet of the water pump is connected with the water inlet of a cooler , the water outlet of the cooler is connected with the water inlet of the coarse granulator, the water outlet of the coarse granulator is connected with the water inlet of the inclined separator, the first oil collector is installed on the top of the coarse granulator, and the inclined separation There is a second oil collector on the top of the container. The paint slag settler in the device has a good effect on the settlement of process wastewater, and is conducive to the aggregation of organic liquids. After the settled wastewater is cooled, it can be separated and purified twice through coarse-grained separation and inclined separators, effectively removing waste water. organic matter, so that the treated wastewater has a higher removal capacity for organic matter again.

Description

technical field [0001] The invention relates to the field of purification of spray paint wastewater, in particular to a purification device and a purification method for spray paint process wastewater. Background technique [0002] In order to effectively control the paint spraying exhaust gas generated in the process of painting in industries such as furniture manufacturing, mechanical processing, and automobile maintenance, water curtain cabinets are generally used to pre-treat the paint spraying exhaust gas. Paint mist dust and some organic solvents such as benzene, toluene, xylene, solvent gasoline, esters, ketones, etc. in the exhaust gas of spray paint enter the water, and the waste water generated is recycled after sedimentation and separation of paint residue. The settling effect of the current settling device is not complete, and the settled waste water also contains a certain amount of organic solvents. If this waste water is directly recycled, after many cycles, t...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): C02F1/00B01D21/02B01D21/00C02F103/14
CPCB01D21/0045B01D21/02B01D21/10C02F1/00C02F2001/007C02F2103/14
Inventor 宋长友
Owner TANGSHAN HONGLI HARDWARE TOOLS
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