Hydrogen peroxide production wastewater treatment process

Abstract

The invention discloses a hydrogen peroxide production wastewater treatment process which comprises the following devices: a catalytic oxidation tower, an air floatation tank, a water distribution tank and an EGSB tower; a water inlet is formed in one side of the catalytic oxidation tower, the other side of the catalytic oxidation tower is connected with the water inlet of the air floatation tank through a pipeline, an air floatation device is arranged at the top of the air floatation tank, a water outlet is formed in the bottom of the air floatation tank, the water outlet is connected with the water inlet of the water distribution tank, a wastewater inlet is formed in the top of the water distribution tank, the bottom of the water distribution tank is connected to the EGSB tower through a pipeline, a biogas outlet is formed in the top of the EGSB tower, and a liquid outlet is formed in the side surface and is connected to a sedimentation tank. According to the invention, the modes of catalytic oxidation, air floatation, water distribution, EGSB and precipitation are adopted for treatment, treatment is carried out respectively through different working sections, and then mixing is carried out, so that the problem of overlarge dosage of hydrogen peroxide feeding can be solved, pollution factors of water quality can be solved in a targeted manner, multiple processes are connected in series for treatment, the operation cost is reduced, the water outlet effect is improved, and the treatment efficiency is enhanced; the process has the characteristics of good treatment effect and low operation cost.

Description

technical field [0001] The invention relates to the technical field of environmental chemistry, and more specifically relates to a hydrogen peroxide production wastewater treatment process. Background technique [0002] There are three main sources of hydrogen peroxide wastewater, wastewater containing phosphate triester, wastewater containing anthraquinone, and wastewater containing 1,3,5-trimethylbenzene. At present, most factories mix the three streams of water and use catalyst catalysis and oxidation-flocculation method. Although the operation is simple and convenient, the material to be added is hydrogen peroxide, which is costly, and improper input will lead to strong reducing properties in the wastewater, making it This kind of wastewater in most of the factory areas is difficult to meet the discharge standards. And one of the trimethylbenzene wastewater has very little content of other pollution factors except trimethylbenzene. Direct mixing into the system in the ...

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Problems solved by technology

This kind of treatment process, although the treatment efficiency is high, but the cost is high and the treatment effect is poor, so that the treated wastewater is not enough to meet the discharge standard

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