A cyclone dissolved air flotation sewage treatment equipment

Abstract

The invention discloses a swirl dissolved air flotation sewage treatment equipment. The tank body is equipped with an inner tank with the same center line; the bottom of the tank body and the inner tank are respectively connected with the mud discharge pipeline, and the upper part of the tank body is provided with a slag collection dome; and the slag collection circle A slag discharge pipe is provided on the side wall of the tank that matches the lowest part of the top; an exhaust pipe is provided on the top of the tank; The main drainage port is connected to the inlet of the dissolved air pump, and the inlet of the dissolved air pump is also connected to the dissolved air source pipeline; the outlet of the dissolved air pump is connected to one end of the return pipeline; the other end of the return pipeline is connected to the The releaser at the fitting position of the canister is connected. The invention is applicable to the treatment of waste water in various industries, and has the characteristics of high treatment efficiency, low operating cost, simple structure, easy operation and maintenance, stable and good effluent quality, high process adaptability, and good economic and social benefits.

Description

technical field [0001] The invention relates to sewage treatment equipment, in particular to a swirling dissolved air flotation sewage treatment equipment suitable for industrial and civil wastewater treatment. Background technique [0002] Industrial and civil sewage, especially petroleum refining and metallurgical sewage, usually contains oil, suspended solids, colloids, and dissolved substances, among which oil can be divided into slick oil, mechanically dispersed oil, emulsified oil, dissolved Oil and solids adhere to oil. Generally, oil is the main object of removal. While removing oil, other pollutants such as suspended solids and sewage COD can be effectively removed simultaneously. [0003] General degreasing methods include gravity degreasing, filtering degreasing, coagulation degreasing, cyclone degreasing, air flotation degreasing and other process methods. With the advancement of technology and the improvement of the country's environmental protection requireme...

AI Technical Summary

Problems solved by technology

[0005] Domestic related research is still in the initial stage of laboratory research, and there are few related industrial applications or inventions. Most of them are simply used in series with dissolved air flotation equipment and cyclone separation equipment, or the sewage to be treated is pressurized and dissolved in air and then enters the cyclone. flow separator separation

These technologies have disadvantages such as large power consumption, large area occupied by pressurized dissolved air tanks, easy contamination and blockage, interference of dissolved air release by swirling flow, unstable flotation effect, limited processing capacity and treatment effect, etc., which limit this type of swirling air flotation technology Carry out product application

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