Water purifying agent for chemical industries such as coal chemical industry and coking industry and preparation method of water purifying agent

Abstract

The invention discloses a water purifying agent for chemical industries such as coal chemical industry and coking industry and a preparation method of the water purifying agent. The water purifying agent comprises the following components in parts by mass: 5 to 10 parts of carboxymethyl cellulose (CMC), 5 to 10 parts of modified chitosan, 5 to 10 parts of phenolic aldehyde, 25 to 40 parts of composite dual-acid aluminum iron, 1 to 3 parts of xanthan gum, 1 to 3 parts of cationic guar gum, 5 to 10 parts of an acid solution, 25 to 40 parts of aluminum potassium sulfate dodecahydrate, 20 to 40 parts of polyacrylamide, 25 to 60 parts of polyferric sulfate, and 2 to 5 parts of ST. Compared with a traditional water purifying agent, the use amount of a flocculating agent is greatly reduced, resources are saved, and the cost is low; the effluent quality is good; aiming at coal chemical industry wastewater and coking industry wastewater with complex components, the combined water purifying agent with different components and different functions is adopted, coagulation, adsorption, wrapping, sedimentation and decoloration occur quickly, and the effect of getting twofold results with half theeffort in COD removal rate can be achieved; and the effluent quality meets increasingly strict emission standards and laws and regulations.

Description

technical field [0001] The invention relates to the field of environmental protection wastewater treatment, in particular to a water purifying agent used in chemical industries such as coal chemical industry and coking chemical industry and a preparation method thereof. Background technique [0002] Coal chemical industry and coking industry are important industries in my country, but their production process will produce a large amount of industrial wastewater. This type of wastewater has the characteristics of high COD, ammonia nitrogen concentration, a large amount of volatile phenols, cyanides, sulfides, polycyclic aromatic hydrocarbons and heterocyclic compounds and other toxic and harmful refractory substances, complex components, large chroma, and large water volume. As my country's water environment management requirements become more and more stringent, the research and development of new water treatment technologies is imminent. Water purifying agent is a commonly...

AI Technical Summary

Problems solved by technology

[0006] Due to the characteristics of high pollutant concentration, complex composition, large chroma, and large water volume in coal chemical industry and coking industry wastewater, the existing technology often has a large amount of treatment and a large amount of sludge generated; when the amount is low, the pollutants cannot be quickly Precipitation and demulsification are difficult, resulting in the COD of the effluent not up to the standard, and the color of the wastewater is dark

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