Electrocatalytic oxidation filler, preparation method thereof and 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 preparedby mixing a mixture of clay minerals and a curing agent and a mixed solution of Cu < 2 + >/Mn < 2 + > and roasting. The three-dimensional electrocatalytic oxidation device comprises an anode, a cathode and an electrocatalytic oxidation filler filled between the anode and the cathode. The electrocatalytic oxidation filler provided by the invention has the advantages of good conductivity, low energyconsumption, high stability, strong catalytic activity, no need of supporting electrolyte and the like, is widely applied to treatment of industrial wastewater as a filler of a three-dimensional electrocatalytic oxidation device, can realize effective removal of organic pollutants in the wastewater, and has relatively high use value and relatively good application prospect. The preparation methodof the filler has the advantages of being simple in process, convenient to operate, easy to control, low in raw material cost, low in energy consumption, short in consumed time, environmentally friendly and the like, is suitable for continuous large-scale batch production, facilitates industrial utilization and shows a 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.

Images