Processing method of waste water containing heavy metal and dye

Abstract

The invention discloses a processing method of waste water containing heavy metal and dye. In the method, a sorbent is utilized to process the waste water containing heavy metal and dye, and the sorbent contains ferroferric oxide micro-magnetic particles and laccase. The laccase is hydroquinone dioxygen oxidoreductase containing copper, and the class number is EC 1.10.3.2. The ferroferric oxide micro-magnetic particles and the lasscase are in cross-linkage combination through assistance of a cross linkage agent. Heavy metal and dye in the waste water can be fast adsorbed and recovered with high efficiency by the ferroferric oxide micro-magnetic particles and the laccase, thereby the waste water containing heavy metal and dye is effectively processed, and the environment is protected.

Description

【Technical field】 [0001] The invention relates to the field of wastewater treatment, in particular to a treatment method for wastewater containing heavy metals and dyes. 【Background technique】 [0002] Heavy metals are harmful to human body, especially heavy metals such as cadmium, hexavalent chromium and mercury are more toxic and can cause direct harm to human body. Heavy metal wastewater from electroplating factories and circuit board factories has become an increasingly serious threat to the environment, especially water resources, and has become a global environmental problem. Therefore, the treatment of heavy metal wastewater has attracted more and more attention from all over the world. Countries have invested a lot of manpower and material resources to conduct extensive research, and have obtained certain research results and invention patents. So far, the method used to treat heavy metal wastewater is mainly chemical precipitation method. The principle of chemical ...

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Problems solved by technology

The disadvantage of the coagulation method is that the decolorization and COD removal are not complete, and a large amount of sludge is generated, which is easy to cause secondary pollution. At the same time, the facility occupies a large area and the process takes a long time. Attempts or applications in China, including physical adsorption decolorization, oxidative decolorization, ion exchange decolorization, membrane separation decolorization and biochemical decolorization, etc., these technologies have not been widely used either because of unsatisfactory effects or high costs

At the beginning of this century, it was reported abroad that a synthetic macromolecular compound called cucurbituril (cucurbituril) can be used as a renewable adsorbent for dye pollutants. This adsorbent is regenerated through the oxidation reaction participated in by ozone. Adsorbents, but because the application area is too narrow, it is only effective for reactive dyes, and the cost is too high, so far it has not been applied on a large scale

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