Processing method of high-concentration industrial phenolic wastewater

Abstract

The invention provides a processing method of high-concentration industrial phenolic wastewater. According to the processing method of the high-concentration industrial phenolic wastewater, an efficient extracting agent and the phenolic wastewater are fed into an extracting tower to be mixed at a certain ratio, and then the high-purity phenolic wastewater is extracted and pre-processed at a certain temperature through a reverse liquid-liquid contact. The wastewater processed by the processing method provided by the invention can meet the requirement of various water quality indexes of biochemical treatment; the problem due to process current high-concentration phenolic amino wastewater produced via chemical enterprise is solved; the crude phenol and stronger ammonia water which are in a certain economic value can be recovered; and the optimal win-win combination of environment-friendly performance and economic benefit is achieved. The processing method provided by the invention is simple in technical process, continuous, and low in energy consumption; the extracting agent can be recycled; the scale production can be completely achieved; the basic state policy of integral sustainable development on resource, energy and environment is really demonstrated; and good circulation of three benefits is achieved, which means the harmony and unity on society, economy and environment.

Description

technical field [0001] The invention relates to a treatment method for high-concentration industrial phenol-containing wastewater, which is particularly suitable for treating high-concentration phenol-containing wastewater from coal chemical production. Background technique [0002] Phenol-containing wastewater mainly comes from high-temperature coking, medium-low temperature pyrolysis, or fixed-bed coal gasification and other coal chemical production fields. It must be pretreated to recover phenol and ammonia before it can enter the biochemical treatment device for further advanced treatment. [0003] At present, the treatment methods of phenol-containing wastewater are widely used at home and abroad. The process and flow selection of phenol recovery are mainly determined according to the total phenol content in the wastewater. According to the introduction of relevant information and the experience of related process equipment, when the total phenol content in the wastewa...

AI Technical Summary

Problems solved by technology

However, the traditional extraction process often has a series of problems such as emulsification, pollution, and toxicity due to the improper selection of the extraction agent. The wastewater after extraction often cannot meet the requirements. At the same time, the operating cost is relatively high, and it is difficult to achieve economic benefits. Promotion of Recovery Extraction Process

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