A device for improving the utilization rate of ozone in the multi-stage ozone flotation process

Abstract

The invention discloses a device for improving the utilization rate of ozone in a multi-stage ozone flotation process. The device includes a shell, which can be cylindrical or rectangular as a whole. The trachea, air flotation area, ozone oxidation area and overflow area, among which the packing used in the packing area is a synthetic structured packing with strong anti-oxidation; the wastewater after the ozone air flotation enters the flat liquid distributor through the water inlet for water distribution, and the ozone The gas is evenly aerated by the aeration heads distributed equidistantly on the annular aeration tube under the column, and the gas-liquid two-phase enters in a counter-current manner, and fully reacts in the packing area inside the column. The treated wastewater is discharged through the overflow area to the water outlet, and the residual gas can be destroyed by the ozone destruction device. The invention can effectively overcome the disadvantages of uneven gas-liquid mixing and insufficient reaction in the ozone air flotation process, not only can ensure the treatment effect of waste water, but also can improve the utilization rate of ozone and reduce energy consumption.

Description

technical field [0001] The invention belongs to the technical field of advanced sewage treatment, in particular to a device for improving the utilization rate of ozone in a multi-stage ozone flotation process. Background technique [0002] With the shortage of water resources and the continuous improvement of water treatment technology, the sewage discharge standards are becoming more and more stringent, and the water treatment has to be further processed. [0003] The air flotation treatment method is a widely used sewage solid-liquid separation technology. Its main principle is to take part of the treated sewage and dry air together to generate micro-bubbles through the gas-liquid mixing pump and enter the sewage treatment air flotation area. The flocculated pollutants and suspended particles in the water adhere to the micro-bubbles, float to the surface of the water together with the micro-bubbles, and then are discharged through the slag discharge system to achieve the p...

AI Technical Summary

Problems solved by technology

[0006] The traditional ozone flotation sewage is mostly collected by the sewage collection device in the air flotation area after air flotation, and directly enters the ozone oxidation area through the inlet pipe connected by the flange, and the gas is aerated through the aeration plate, which will cause water inflow The distribution is not uniform, and the gas-liquid two phases cannot be completely mixed, so that the ozone gas cannot be fully utilized, and the undissolved ozone gas will be discharged, which must be destroyed by an ozone destruction device, which will not only cause a waste of ozone gas, but also increase. Necessary energy loss

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