A device and method for wet oxidation treatment of sulfur-containing organic wastewater

Abstract

The invention provides a device for wet oxidation treatment of sulfur-containing organic waste water, which comprises a coalescence oil removal unit, an oxidation reaction unit, a cyclone degassing unit and a closed mud discharge unit. The invention provides a method for wet oxidation treatment of sulfur-containing organic wastewater by using the above-mentioned device. Firstly, the sulfur-containing organic wastewater is subjected to high-efficiency degreasing treatment, and then the sulfide is chemically oxidized by the air oxidation method, and the reaction product enters the cyclone degreasing process. The gas device performs deep gas-liquid separation, and the sludge is discharged through the mud discharge device. The device and method of the invention improve the oxidation rate, enhance the treatment capacity, reduce secondary pollution, and can recover useful substances, and can be widely used in the field of waste water treatment.

Description

A device and method for wet oxidation treatment of sulfur-containing organic wastewater technical field The invention belongs to technical field of wet oxidation, be specifically related to a kind of device of wet oxidation processing sulfur-containing organic waste water and method. Background technique Wet oxidation technology is medium and high pressure air oxidation (WetAir Oxidation, referred to as WAO) is a kind of treatment with high pressure. An important method for the removal of toxic, harmful, high-concentration organic wastewater. Under the conditions of 100-373 degrees Celsius and 0.5-10MPa, with oxygen in the air Gas is used as an oxidant, and the oxygen in the air is used to oxidize the sulfide in the waste lye into sodium thiosulfate or sulfate, eliminating the Malodorous odor; oxidize pollutants into inorganic substances or small molecular organic substances in the liquid phase, reduce the COD concentration in waste lye, It is suitable for COD ran...

AI Technical Summary

Problems solved by technology

However, the smaller bubbles in the reaction product have a higher fluid followability. In the gas-liquid separation stage of the reaction product, the fine bubbles are difficult to peel off from the liquid phase, and the entrainment of the gas phase mist is serious.

In addition, due to the need to strictly control the gas-liquid contact time to avoid impurities and coking caused by excessive reaction, the volume of the gas-liquid separator should not be too large, which poses new challenges to the traditional sedimentation gas-liquid separation technology

Images