Pressure air dissolving device of air float

Abstract

The invention provides a pressure air dissolving device of air float. The pressure air dissolving device comprises an air dissolving tank, a micro-nano bubble releasing device, and a reaction tank. The air dissolving tank is set to be a jet flow filling-free type; the hydraulic retention time of the air dissolving tank is 5 to 10 seconds, the normal work pressure in the air dissolving tank is 0.25 MPa; the dissolved air saturation rate of the air dissolving tank is 80% or more; the air dissolving tank is provided with an air inlet, a water inlet, and a water outlet, the water outlet is connected to the micro-nano bubble releasing device; and the micro-nano bubble releasing device is arranged in the bottom of the reaction tank. The provided pressure air dissolving device of air float has the advantages that the efficiency is high, the energy is saved, the device is easy to manage; the air dissolving tank and releasing device of conventional air dissolving device are improved, the volume of air dissolving tank is reduced, the bubble generating effect is improved, and the impurity removing rate is increased.

Description

technical field [0001] The invention relates to the technical field of water purification by dissolved air flotation, in particular to an air flotation pressure dissolved air device. Background technique [0002] In recent years, with the shortage of water resources and the increasingly serious problem of water pollution, wastewater treatment and purification technology has received more and more attention. As an important water treatment technology, air flotation water purification has developed rapidly in my country. Dissolved air flotation is a kind of air flotation. It uses the characteristics of different solubility of water under different pressures to pressurize and aerate all or part of the water to be treated (or treated) to increase the air dissolved in the water. Then add the coagulant, so that the air in the water is precipitated in the form of small bubbles under normal pressure, and at the same time adhere to the impurity flocs, and carry them up to the water ...

AI Technical Summary

Problems solved by technology

[0003] 1. Dissolved gas tanks are generally large and bulky;

[0004] 2. The efficiency of the dissolved air releaser is low, the bubble generation effect is low, and it is easy to block and the management is complicated

[0005] 3. The utilization rate of the existing air flotation agents is low and the dosage is large

[0006] 4. The required pressure is relatively high and the power consumption is high

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