A super-atomized dissolved air flotation device

Abstract

The invention discloses a super-atomized dissolved air flotation device, including a dosing system, a deposition system, and a dissolved air flotation system, wherein the dosing system includes a liquid inlet hopper, a dosing cabin, and several dosing mechanisms one, Dosing mechanism 2, diversion mechanism, the dissolved air flotation system includes an air flotation tank, an impurity removal mechanism, a dissolved air mechanism, a heating mechanism, and an array of sieve sieve plates; The specific surface area and reaction efficiency of the bubbles, by setting the components, the bubbles repel each other and divert the flow during the floating process, prolonging the working path of the dissolved air bubbles; reduce the gradient accumulation of slag through the dosing system, strengthen the mixing reaction effect and control the dosing amount; through The sedimentation system performs multiple cycles of filtration and sedimentation, and reduces the occurrence of backflow.

Description

technical field [0001] The invention relates to the technical field of sewage treatment equipment, in particular to a super-atomized dissolved air flotation device. Background technique [0002] With the rapid development of the national economy and the improvement of people's living standards, the demand for water is increasing, resulting in a rapid increase in the amount of sewage treatment. Dissolved air flotation technology has the advantages of good effect, high efficiency, and less land occupation as sewage pretreatment, advanced treatment, biochemical treatment and other suspended solids and colloid removal, and biochemical system mud-water separation, and has been paid more and more attention by people. Dissolved air flotation is suitable for high-concentration sewage pretreatment, low-concentration sewage advanced treatment, and sludge-water separation treatment in biochemical systems. In addition to the advantages of good effect, high efficiency, and small footprin...

AI Technical Summary

Problems solved by technology

[0003] Most of the current dissolved air flotation devices have the following problems: (1) There are many problems in the current dissolved air flotation devices, which easily lead to poor dissolved air effect; for example, in the process of dissolved air generation and transportation , because of the buoyancy problem, most of the dissolved air bubbles float up and fuse with each other to form large bubbles, which greatly reduces the specific surface area and reaction efficiency of dissolved air; in addition, in the process of dissolved air aeration, because the aeration swirl direction is single and there is no coupling with each other The effect makes the dissolved air merge quickly after a short-term flotation, and the uneven temperature field during the flotation process of the dissolved air will also lead to rapid merging; (2) Traditional dosing devices generally use point or surface contact Dosing by means of dosing, such as simply adding treatment chemicals on the side of the dosing mixing box, but because there is a lot of slag in the sewage and the slag is not evenly dispersed, the mixing effect of the chemical and sewage is poor, and because the reaction cannot reach Quantitative within the range makes it difficult to control the amount of dosing. Most of the traditional devices use a simple linear flow path, which is easy to form a gradient accumulation of slag; (3) most dissolved air flotation equipment lacks effective pre- The sedimentation system is used for filtration, so that the equipment is prone to blockage when dealing with heavily polluted sewage. The rest of the equipment and even if the pre-sedimentation process is set up, it is only a simple one-way flow filtration, and it is easy to be blocked due to backflow. Affect the filter deposition effect

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