Coal chemical industry wastewater purification treatment method

Abstract

The invention belongs to the technical field of environmental protection, and particularly relates to a coal chemical industry wastewater purification treatment method. In the method, a wastewater treatment system is adopted, and the wastewater treatment system comprises a treatment box and a reagent box; the wastewater treatment system further comprises first stirring units, second stirring unitsand reagent spray heads; the first stirring units are used for dissolving a flocculating agent into wastewater during low-speed stirring; the second stirring units are used for dissolving the flocculating agent in the wastewater during high-speed stirring; and the reagent spray heads are used for spraying the flocculating agent into the treatment box. In low-speed stirring and high-speed stirring, the first stirring units and the second stirring units are used for stirring complementarily; on one hand, the collision area of the flocculating agent with impurities in the wastewater is increased, so that the dissolving efficiency of the flocculating agent into the wastewater is accelerated, and the purification efficiency of the wastewater is improved; and on the other hand, the flocculatingagent is sprayed into the treatment box reasonably according to requirements, so that the flocculating agent is dissolved into the wastewater, the waste of the flocculating agent is avoided, and theutilization rate of resources is improved.

Description

technical field [0001] The invention belongs to the technical field of environmental protection, in particular to a method for purifying and treating wastewater from coal chemical industry. Background technique [0002] Water resources are an important material basis for the survival and development of human society. With the development of modern industry, the problem of water pollution is becoming more and more serious. In particular, industrial sewage has become the focus of social attention due to its high concentration of organic matter, high toxicity, complex composition and difficulty in treatment. [0003] Wastewater refers to the general term for water discharged from residents' activities and runoff rainwater. It includes domestic sewage, industrial waste water, and other useless water such as the inflow of primary rainwater into drainage pipes, and generally refers to water that is not used or has no use value. The wastewater has a high concentration of pollutan...

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Problems solved by technology

[0007] In order to make up for the deficiencies of the prior art and aim at the problem of insufficient stirring in the original scheme, the present invention proposes a method for purifying coal chemical wastewater. The method adopts a wastewater treatment system. Unit, in the low-speed stirring, the No. 1 stirring unit and the No. 2 stirring unit are complementary to stir. On the one hand, the collision area between the flocculant and the impurities in the wastewater is increased, thereby accelerating the dissolution efficiency of the flocculant and wastewater, thereby improving the waste water. Purification efficiency; on the other hand, the flocculant is sprayed into the treatment tank reasonably according to the needs, so that the flocculant and wastewater can be dissolved, avoiding the waste of flocculant, thereby improving the utilization rate of resources

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