Treatment method applied to chemical industrial wastewater

Abstract

The invention discloses a treatment method applied to chemical industrial wastewater. The treatment method comprises the following treatment steps of (a) chemical industrial wastewater pretreatment, (b) biochemical treatment of chemical industrial wastewater and (c) physical treatment of chemical industrial wastewater. According to the treatment method, the chemical industrial wastewater is sequentially subjected to the chemical industrial wastewater pretreatment, the biochemical treatment of chemical industrial wastewater and the physical treatment of chemical industrial wastewater, and the chemical industrial wastewater reaching the discharge standard is obtained. The treatment method is especially suitable for treatment of organic chemical industrial wastewater having strong biological toxicity and poor biochemical properties and can deeply treat chemical industrial wastewater, the harmful matter content in the treated wastewater is reduced to the most degree, the lower treatment degree is avoided, and accordingly the problem that treated wastewater still cause large environmental pollution is solved. In addition, in the wastewater treatment process, all links can be performed in order, the treatment method is simple in structure, scientific, convenient, strong in pertinence, high in automation degree, low in actural application cost, advanced in technology and good in treatment effect, and the chemical industrial wastewater treatment problem is well solved.

Description

technical field [0001] The invention relates to a treatment method applied to chemical wastewater. Background technique [0002] Since the 20th century, with the rapid development of industry, the consumption and pollution of water resources have become more and more serious. With the gradual enhancement of people's awareness of environmental protection, people have paid more and more attention to the protection of fresh water resources. Wastewater treatment and reuse have become economical. An effective way of water resources, there will be a large amount of chemical wastewater during wastewater treatment. The chemical industry includes two categories: organic chemical industry and inorganic chemical industry. There are various chemical products and complex components, and the discharged wastewater is also diverse. Most of them are highly toxic, not easy to purify, have a certain accumulation in organisms, have obvious oxygen consumption properties in water bodies, and easi...

AI Technical Summary

Problems solved by technology

Among them, the physical and chemical treatment method has a better treatment effect and is not affected by toxic and harmful substances in chemical wastewater, but the cost is high

The traditional biochemical method is still mostly used in the biological treatment method. Although the process cost is low, it is difficult for the chemical wastewater after treatment to be stable and reach the standard. At the same time, the process of the traditional biochemical method is greatly affected by the impact of organic loads.

Membrane technology is a relatively mature advanced treatment process in the market. After membrane filtration, the effluent water quality can meet the discharge requirements, but there are still about 20% of the concentrated water problem that needs to be solved. The biodegradability of this part of the water is extremely poor, and the pollution in it The concentration of the pollutants increases a lot after being concentrated by the membrane, and still needs to be treated, which makes this process have a bottleneck problem in the treatment of such wastewater

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