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Novel totally-dissolved air high-pressure vortex air floatation method and device

A high-pressure swirl and air flotation technology, applied in separation methods, chemical instruments and methods, flotation water/sewage treatment, etc., can solve the problems of low processing load, low dissolved gas efficiency, low efficiency, etc. High, small footprint effect

Inactive Publication Date: 2017-06-30
SHANGHAI LEZE ENVIRONMENTAL ENG
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  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0014] In order to solve the technical problems of low gas dissolving efficiency, low processing load, low efficiency, poor effect and large and complex equipment in existing equipment, the present invention provides a fully dissolved gas high-pressure cyclone air flotation equipment

Method used

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  • Novel totally-dissolved air high-pressure vortex air floatation method and device
  • Novel totally-dissolved air high-pressure vortex air floatation method and device
  • Novel totally-dissolved air high-pressure vortex air floatation method and device

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specific Embodiment approach

[0048] refer to figure 1 , a new high-pressure cyclone air flotation method with fully dissolved air, the steps of which are:

[0049] 1. After the oily sewage is fully fused with the high-pressure air in the three-phase mixer 4 through the reaction system 3, a vortex is generated inside the three-phase mixer 4, and a preliminary pre-swirl is performed.

[0050] 2. After passing through the swirling flow of the 6-stage three-phase mixer 4, it enters the air flotation tank 1 along the tangential direction, and the swirling flow inner cylinder 2 generates a swirling flow for internal swirling flow. The inflow pipe 12 forms an angle of 10° with the horizontal plane down.

[0051] 3. The upper part of the swirl inner cylinder gradually shrinks. Under the action of swirling flow, the particle size of oil droplets increases, and at the same time, due to the decrease of air pressure, dissolved air is released to produce microbubbles. Under the action of microbubbles, the oil dropl...

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Abstract

The invention discloses a new type of fully dissolved gas high-pressure swirling air flotation method and its equipment, including a reaction system and an air flotation tank, wherein the top of the air flotation tank is provided with an exhaust port, and its side is provided with an oil outlet. There is a mud discharge port at the bottom, and the air flotation tank includes an outer tank and a swirling inner cylinder inside the outer tank. The reaction system is connected to the swirling inner cylinder through an inflow pipe, and the air flotation tank is connected with an automatic water level Regulator, and an oil-water interface measuring instrument used in conjunction with an automatic water level regulator is installed on its top, an oil skimmer is installed above the swirl inner cylinder, and the oil outlet is located on the side wall of the outer tank below the oil skimmer superior. The new fully dissolved air high-pressure swirling air flotation equipment mainly uses high-efficiency three-phase mixers to complete high-pressure air dissolution, drug molecule stretching and efficiency improvement, coagulation and flocculation stirring, floc formation, bubble crystal nucleus generation and ultra-light hollow floc formation After all the steps, enter the tank tangentially into the swirling inner cylinder to generate swirling flow, thereby removing floating oil and suspended matter.

Description

technical field [0001] The invention relates to the technical field of dissolved air flotation, in particular to a novel fully dissolved air high-pressure cyclone air flotation equipment method and equipment thereof. Background technique [0002] In the process of water supply and wastewater treatment, solid-liquid separation technology and its equipment are one of the key items. For the removal of tiny suspended particles in liquids, the most commonly used methods are sedimentation separation, sieve membrane separation, flotation separation and other technologies and equipment. Sedimentation, membrane sieving, and flotation operate under different working conditions, or adopt various technological processes. Each method has its own characteristics and shortcomings, and cannot be mutually exclusive or substituted. The flotation method is mainly used in wastewater where the density of the suspended matter to be separated is similar to that of water, and the settling performa...

Claims

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Application Information

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IPC IPC(8): C02F9/04C02F1/24C02F1/40C02F1/38
CPCC02F1/40C02F1/24C02F1/38C02F1/5281
Inventor 张军付振华吕文玉
Owner SHANGHAI LEZE ENVIRONMENTAL ENG
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