Air flotation equipment and working method thereof

A working method and equipment technology, applied in flotation water/sewage treatment, flocculation/sedimentation water/sewage treatment, etc., can solve problems such as poor adhesion, large energy consumption, water disturbance, etc. High pollution efficiency and uniform particle size

Inactive Publication Date: 2015-09-23
WUXI LVZHIXING ENVIRONMENTAL PROTECTION CO LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0007] The size of the bubble directly affects the air flotation effect. Bubbles of different sizes have different buoyancy and the ability to adhere to suspended oil droplets. If the bubble is too large, the floating speed is fast, the adhesion ability is poor, and it will cause water disturbance, so the air flotation effect is not good, but If the bubbles are too small, the requirements on the releaser and pressure are high, and the energy consumption is large. At the same time, it is very difficult to deal with the floating impurities containing too many micro-bubbles, so the size of the bubbles should not be too large or too small

Method used

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  • Air flotation equipment and working method thereof
  • Air flotation equipment and working method thereof
  • Air flotation equipment and working method thereof

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Effect test

Embodiment 1

[0029] new type The air flotation is divided into four parts: first, ferric chloride is added in the dosing part, and the added amount accounts for 0.001% of the total waste water to be treated, and it is fully mixed with the sewage in the sewage pump. High-efficiency and energy-saving jet equipment is adopted, and the jet is fully mixed and dissolved with the return water pressurized by the pump after treatment to form dissolved air water. Dosing and coagulation of sewage into new type In the degreasing tank, the dissolved air water is suddenly filled with gas by the release device at the lower part of the inlet pipe, so that the air in the water suddenly releases a large number of microbubbles. The suspended solids all float on the water surface, and then pass through the upper sludge tank, while the bottom of the tank is discharged through the treated clean water. The whole process is automatically controlled by the electric control cabinet.

[0030] The specific opera...

Embodiment 2

[0047] new type The air flotation is divided into four parts: first, ferric chloride is added in the dosing part, and the added amount accounts for 0.002% of the total amount of wastewater to be treated, and it is fully mixed with the sewage in the sewage pump. High-efficiency and energy-saving jet equipment is adopted, and the jet is fully mixed and dissolved with the return water pressurized by the pump after treatment to form dissolved air water. Dosing and coagulation of sewage into new type In the degreasing tank, the dissolved air water is suddenly filled with gas by the release device at the lower part of the inlet pipe, so that the air in the water suddenly releases a large number of microbubbles. The suspended solids all float on the water surface, and then pass through the upper sludge tank, while the bottom of the tank is discharged through the treated clean water. The whole process is automatically controlled by the electric control cabinet.

[0048] The speci...

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Abstract

The invention provides air flotation equipment and a working method thereof. The equipment comprises an air floatation tank, wherein a clear water outlet, a sewage inlet, a sewage outlet and a slag discharge opening are respectively formed in the air flotation tank; the sewage inlet is sequentially connected with a swirling reactor, a sewage pump, a dosing opening and a sewage inlet; a releaser is arranged in the air flotation tank, the releaser is sequentially connected with a mixer and a pressurizer pump out of the air flotation tank, and the pressurizer pump is connected with the clear water outlet; a jet device which is connected with a pressure tank is arranged in the mixer. The equipment provided by the invention can be used for removing emulsified oil, which is difficult to remove by naturally settling or floating upwards, in wastewater or micro suspended particles with the relative density being close to 1, and has the advantages of being compact in structure, high in decontamination efficiency, low in energy consumption, high in degree of automation and the like.

Description

technical field [0001] The invention relates to the field of sewage treatment, specifically An air flotation device and its working method . Background technique [0002] With the continuous development of economy and society, the contradiction between the supply and demand of fresh water resources in our country has become increasingly prominent, and the pollution of the environment caused by wastewater discharge has become increasingly serious. The water problem has become a major issue affecting the national economy and people's livelihood. I government Starting from the concept of sustainable development, the scale of investment in the development and construction of water resources and the recycling and utilization of waste water has been continuously increased. [0003] Air flotation methods can be divided into diffuse air flotation, dissolved air flotation and electrolysis air flotation. It is currently used in water supply, industrial wastewater and urban sewage ...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C02F1/24C02F1/52
Inventor 汤荣南
Owner WUXI LVZHIXING ENVIRONMENTAL PROTECTION CO LTD
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