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Flotation separation apparatus

A separation device and flotation technology, used in flotation, solid separation, liquid separation, etc., can solve the problems of small scraping device and insufficient recovery.

Active Publication Date: 2019-05-21
KURITA WATER INDUSTRIES LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0010] In the device of Patent Document 1, the scraping device is small and can only scrape a part of the water surface of the flotation tank, so the floating paint residues stay / dry and cannot be fully recovered

Method used

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  • Flotation separation apparatus
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  • Flotation separation apparatus

Examples

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Embodiment Construction

[0027] Embodiments will be described below with reference to the drawings. figure 1 It shows the processing apparatus of the spray painting wastewater provided with the flotation separation apparatus of 1st Embodiment. The treatment device is structured as follows: the coating wastewater containing paint components is sent from the raw water tank (waste slag tank) 1 to the flotation separation device 10 through the float pump 2, hose 3, valve 4 and piping 5 for flotation separation treatment, The floating matter is scraped by the scraper and falls into the recovery tank 40 .

[0028] Flotation separation device 10 comprises: stirring tank 11; The stirring pump 12 that is arranged in this stirring tank 11; The flotation tank 14 that condensed water flows in from stirring tank 11 through overflow weir 13; The scraper 15 of the scraper of the floating matter; the treatment water tank 16 into which the treatment water in the flotation tank 14 flows; and the pump 17 and the hose 1...

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PUM

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Abstract

A flotation separation apparatus (10) is provided with a stirring tank (11), a stirring pump (12) set inside the stirring tank (11), a flotation tank (14) into which flocculated water flows from the stirring tank (11) via an overflow dam (13), a scraping device (scraper) (15) for scraping floating substances in the flotation tank (14), a treated water tank (16) into which the treated water in theflotation tank (14) flows, and a pump (17) and hose (18) for returning the treated water in the treated water tank (16) to a raw water tank (1). The stirring pump (12) sucks in air and water inside the stirring tank (11) and discharges water mixed with bubbles to the lower part of the stirring tank (11). The height of the overflow dam (13) is adjustable.

Description

technical field [0001] The invention relates to a flotation separation device which adds coagulant to raw water and performs flotation separation treatment. Specifically, the present invention relates to a flotation separation device suitable for flotation separation of paint residue contained in a paint waste liquid. Background technique [0002] Conventionally, as a method of coating complex-shaped articles such as automobiles, building materials, and electronic chemicals, a spray coating method in which paint is sprayed in a painting booth is often used. In this spray painting method, the amount of paint required for actual painting is about 30% of the sprayed paint, and the remaining about 70% is excess paint. These excess paints are generally caught and collected in circulating water by water curtains etc. installed in the painting room. Then, after the circulating water containing the excess paint components is collected in a circulating water pit, etc., the circulat...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C02F1/24C02F1/40C02F1/52B01F33/40
CPCC02F1/24C02F2103/14B03D2201/002B03D2203/008B03D1/028B03D1/1462B03D1/20Y02P70/10C02F1/40C02F1/52
Inventor 大木康一
Owner KURITA WATER INDUSTRIES LTD