Device and method for treating waste liquid containing benzene ring substances

Abstract

The invention discloses a benzene ring substance-containing waste liquid treatment device and a treatment method, and relates to the technical field of environmental protection. Benzene ring-containing waste liquid enters the oxidation prepolymerization area through an input pipe, an acidification adsorption reactor is arranged in the polymerization promoting growth area, and a double-spiral-flow aerator and an MBF adsorption material layer are arranged in the MBF bioreactor area respectively; a middle lifting pump is arranged on one side, close to the MBF bioreactor area, in the polymerization growth promoting area; a pH meter is arranged in the oxidation prepolymerization zone, a temperature control meter is arranged in the polymerization growth promoting zone, an ORP meter is arranged in the MBF bioreactor zone, and the pH meter, the temperature control meter and the ORP meter are respectively connected with the PLC. The device can be matched with the characteristics of the benzene elution waste liquid of the coking plant, and is small in occupied area and simple to operate and manage; by means of mild chemical oxidation prepolymerization, MBF hydrophilic adsorption and MBF biological nest high-load degradation, low-cost detoxification treatment that the water quality of the treated benzene ring waste liquid meets the water inlet requirement of a sewage station is achieved.

Description

technical field [0001] The invention relates to the technical field of environmental protection, in particular to the technical field of a method for treating waste liquid containing benzene ring substances. Background technique [0002] At present, the coking enterprise's own pre-ammonia desulfurization process has been widely used in coking oven gas desulfurization in the coking industry in recent years. This process uses ammonia with coal gas as alkali source, and uses cobalt phthalocyanine (PDS) compound as the main component of desulfurization and decyanation catalyst. The desulfurization operation cost is low, the investment is small, the process operation is simple, and the desulfurization and decyanation efficiency is high. It is a desulfurization process commonly used in the coking industry at present without adding an alkali source. According to incomplete statistics, more than 200 enterprises across the country have adopted this method for desulfurization, and all...

AI Technical Summary

Problems solved by technology

Because benzene ring substances have certain biological toxicity to microorganisms, high-concentration phenolic wastewater needs to be pretreated by biological methods, otherwise the activated sludge is sensitive to benzene ring toxic substances and cannot operate normally.

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