Partial reflux dissolved air floatation system

A dissolved air flotation and partial reflux technology, applied in flotation, solid separation and other directions, can solve the problems of increased energy consumption, poor flotation treatment effect, large flow of water pump and dissolved air tank, etc. Good selection effect, taking into account the effect of energy consumption and flotation effect

Pending Publication Date: 2019-03-22
安溪县斯马拓科技发展有限公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

All the oily wastewater in the dissolved air flotation method is pressurized by the water pump, which will increase the emulsification degree of the oily wastewater and thus increase the treatment pressure, resulting in poor flotation treatment effect. increased energy consumption

Method used

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  • Partial reflux dissolved air floatation system

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Embodiment Construction

[0019] The present invention will be further described below in conjunction with the accompanying drawings and specific embodiments.

[0020] like figure 1 A partial reflux dissolved air flotation system shown includes a flocculation tank 1, a flotation tank 2, a dissolved air tank 3, a pressure reducing valve 4, a booster pump 5, a water injector 6 and a flotation agent tank 18, and the flocculation The outlet of the pool is connected to the inlet of the flotation tank through pipelines. The flotation tank is provided with a backflow inlet 7 and a backflow outlet 8. The first lower partition 9 and the first upper partition 10 are fixed in the flotation tank from left to right. , the second upper dividing plate 11 and the second lower dividing plate 12, the first lower dividing plate is inclined to the first upper dividing plate direction, and the first lower dividing plate, the second lower dividing plate are all arranged between the top of the flotation tank There is a gap,...

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Abstract

The invention discloses a partial reflux dissolved air floatation system. The partial reflux dissolved air floatation system comprises a flocculation basin, a floatation cell, a dissolved air tank, apressure reducing valve, a booster pump and a water injector. The floatation cell is provided with a backflow water inlet and a backflow water outlet, an outlet of the flocculation basin is connectedwith an inlet of the floatation cell through a pipeline. The backflow water outlet is connected with the booster pump through a pipeline. An outlet of the booster pump is connected with an inlet of the water injector. An outlet of the water injector is connected with an inlet of the dissolved air tank through a pipeline. An outlet of the dissolved air tank is connected with an inlet of the pressure reducing valve, and an outlet of the pressure reducing valve is connected with the backflow water inlet through a pipeline. The partial reflux dissolved air floatation system is simple in constitution and stable in running, the pressurizing water amount is small, energy consumption is low, emulsion is not promoted in the floatation process, and the floatation treating effect is good.

Description

technical field [0001] The invention relates to the technical field of oil-water separation, in particular to a partial reflux dissolved air flotation system. Background technique [0002] Flotation is widely used in the treatment of oily wastewater. Its mechanism is to introduce air into the waste water, and precipitate from the water in the form of tiny air bubbles to become a carrier, so that the emulsified oil in the waste water adheres to the air bubbles, floats to the water surface together with the air bubbles, and forms foam, and achieves the separation of oil and water by collecting the foam. Purpose. [0003] At present, the commonly used flotation method is the whole process dissolved air flotation method, which is to pressurize all the oily wastewater with a water pump, inject air before the pump, and dissolve the air in the oily wastewater in the dissolved air tank, and then pass through the pressure reducing valve Send the wastewater into the flotation tank, ...

Claims

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Application Information

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Patent Type & AuthorityApplications(China)
IPC IPC(8): B03D1/14
CPCB03D1/1431
Inventor刘汉祥
Owner安溪县斯马拓科技发展有限公司