Electrocatalytic oxidation filler and its preparation method, three-dimensional electrocatalytic oxidation device

Abstract

The invention discloses an electrocatalytic oxidation filler, a preparation method thereof, and a three-dimensional electrocatalytic oxidation device. The electrocatalytic oxidation filler is a mixture of clay minerals and a curing agent, Cu 2+ / Mn 2+ The mixed solutions are mixed and then roasted. The three-dimensional electrocatalytic oxidation device comprises an anode, a cathode and an electrocatalytic oxidation filler filled between them. The electrocatalytic oxidation filler of the present invention has the advantages of good conductivity, low energy consumption, high stability, strong catalytic activity, and no need for supporting electrolytes. As a filler for a three-dimensional electrocatalytic oxidation device, it is widely used to treat industrial wastewater, and can realize The effective removal of organic pollutants has high use value and good application prospects. The preparation method of the filler of the present invention has the advantages of simple process, convenient operation, easy control, low raw material cost, less energy consumption, short time consumption, green environmental protection, etc., is suitable for continuous large-scale batch production, is convenient for industrial utilization, and shows good application prospect.

Description

technical field [0001] The invention belongs to the field of treatment of pirimiphos-methyl wastewater, and relates to an electrocatalytic oxidation filler, a preparation method thereof, and a three-dimensional electrocatalytic oxidation device. Background technique [0002] Pirimiphos-methyl is a broad-spectrum, high-efficiency, low-toxic organophosphorus insecticide and acaricide, widely used in storage, household sanitation, crops and other pest control, however, a large amount of The sewage has not only seriously hindered the expansion of its production capacity, but more importantly, the treatment of the resulting wastewater has become a top priority. [0003] According to its production process, pirimiphos-methyl wastewater can be divided into three sections: synthesis of guanidine, synthesis of pyrimidinol, and synthesis of pirimiphos-methyl. There are eight streams of wastewater in total. The total volume of wastewater: 10 tons 废水 / Ton 产品 . The pirimiphos-methyl w...

AI Technical Summary

Problems solved by technology

In the prior art, the adsorption method is usually used to treat methyl pyrimidine wastewater. For example, Zhang Yan et al. use bentonite as adsorption for methyl pyrimidine wastewater, and Lei Lianglin et al. use lignin / bentonite as a composite adsorbent for the treatment of methyl pyrimidine wastewater. However, there are inherent defects in the adsorption method in the treatment methods of these pirimiphos-methyl wastewaters, which only transfer pollutants from water to adsorbents, and do not fundamentally solve the problem of environmental hazards from pollution sources

Based on the unsolvable defects in the adsorption method, Li Ming et al. proposed a method of electrocatalytic oxidation to remove pyrimiphos-methyl in wastewater. The lead alloy plate was used as the anode and the stainless steel plate was used as the cathode. COD is removed by electrocatalytic oxidation. However, this method is an outdated two-dimensional electrocatalytic oxidation technology, which has shortcomings such as low current efficiency and long mass transfer distance, and cannot meet the needs of practical applications.

In addition, for how to effectively treat pirimiphos-methyl wastewater, there is no mature and effective industrialized treatment method at home and abroad.

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