Pressure reduction release eddy flow air floatation tank

Abstract

The invention belongs to a pressure reduction release eddy flow air floatation tank. An air dissolution water inlet, a waste water inlet, a scum discharge port, an exhaust port, a water outlet and a backflow port are formed in a tank body. A center pipe is arranged inside the tank body and is perpendicular to the tank bottom, a supporting plate is arranged at the bottom of the center pipe, a partition plate is arranged on the center pipe, blades are arranged on the upper portion of the partition plate, and small holes are formed in the pipe wall between the lower portion of the portion plate and an air dissolution water inlet pipe. A water outlet pipe is arranged on one side inside the thank and connected with the water outlet. A scum tank is arranged on the upper portion of the other side inside the tank and communicated with the scum discharge port. An exhaust pipe is arranged in the center of a tank body end socket. A unique structure is adopted for the air floatation tank, and all functional zones are independent in position and are closely combined in treatment function, so that waste water and agents are mixed more fully under hydraulic power, and the utilization rate of the agents is increased. Under the action of an eddy flow field, the scum-water separation process is intensified, and the scum separation efficiency is improved. The air floatation tank is simple in structure, the size of the air floatation tank can reduced, and the air floatation effect can be improved.

Description

technical field [0001] The invention belongs to the technical field of wastewater treatment, and in particular relates to a novel decompression release cyclone air flotation tank for efficient treatment of oily and suspended solid wastewater. Background technique [0002] Air flotation is a method that uses highly dispersed micro-bubbles as a carrier to adhere to flocs in water, and relies on the buoyancy of the bubbles to make the buoyancy greater than gravity and buoyancy resistance, so as to realize the forced floating of flocs and achieve solid-liquid separation. A technology that can be divided into dispersed air flotation, dissolved air flotation, and electrolytic air flotation. Currently, pressurized dissolved air flotation is commonly used in the treatment of oily and suspended solids wastewater. [0003] The principle of pressurized dissolved air flotation is to dissolve air in water under pressurized conditions to form an air supersaturated state, and then reduce i...

AI Technical Summary

Problems solved by technology

Due to structural and design problems, traditional air flotation tanks and air flotation tanks usually have problems such as large footprint, easy blockage of dissolved air releaser, low air flotation efficiency, and complicated equipment.

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