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...

Examples

Embodiment 1

[0030] An electrocatalytic oxidation catalytic filler is prepared by roasting after mixing a catalyst carrier and a metal catalyst solution, wherein the catalyst carrier is a mixture of clay minerals and a curing agent, and the metal catalyst solution is Cu 2+ / Mn 2+ mixed solution.

[0031] In this embodiment, the clay mineral is a mixture of clay, diatomaceous earth and bentonite, wherein the mass ratio of clay, diatomaceous earth and bentonite is 5:2:3.

[0032] In this embodiment, the curing agent is a silica gel solution with a mass concentration of 30% (the solvent is water); the mass of the curing agent is 0.05% of the clay mineral mass.

[0033] In this example, Cu 2+ / Mn 2+ The mixed solution is a mixed solution of copper acetate and manganese acetate, wherein Cu in the mixed solution of copper acetate and manganese acetate 2+ , Mn 2+ The molar ratio is 1:1, and the mass percentage of copper acetate and manganese acetate in the mixed solution of copper acetate and ...

Embodiment 2

[0039] A three-dimensional electrocatalytic oxidation device, comprising an anode and a cathode, wherein the electrocatalytic oxidation filler prepared in Example 1 is filled between the anode and the cathode.

[0040] In this embodiment, the three-dimensional electrocatalytic oxidation device has a cylindrical structure, and the center is IrO 2 -RuO 2 The / Ti rod is used as the anode, and the surrounding stainless steel plate is used as the cathode.

[0041] In this example, IrO 2 -RuO 2 The diameter of the / Ti rod is 100mm; the diameter of the cathode is 400mm, and the effective height of the anode and cathode is 6000mm.

[0042] The three-dimensional electrocatalytic oxidation device in Example 2 is organically combined with the stripping tower to form a three-dimensional electrocatalytic oxidation stripping tower, and the treatment effect of the three-dimensional electrocatalytic oxidation stripping tower on pyrimiphos-methyl wastewater is investigated at the same time,...

Embodiment 3

[0061] An electrocatalytic oxidation catalytic filler is prepared by roasting after mixing a catalyst carrier and a metal catalyst solution, wherein the catalyst carrier is a mixture of clay minerals and a curing agent, and the metal catalyst solution is Cu 2+ / Mn 2+ mixed solution.

[0062] In this embodiment, the clay mineral is a mixture of clay, diatomite and bentonite, wherein the mass ratio of clay, diatomite and bentonite is 6:3:1.

[0063] In this embodiment, the curing agent is water glass with a mass concentration of 30%; the quality of the curing agent is 0.05% of the clay mineral weight.

[0064] In this example, Cu 2+ / Mn 2+ The mixed solution is a mixed solution of copper acetate and manganese acetate, wherein Cu in the mixed solution of copper acetate and manganese acetate 2+ , Mn 2+ The molar ratio is 1:2, and the mass percent content of copper acetate and manganese acetate in the mixed solution of copper acetate and manganese acetate is 10%; the mass perc...

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...

Examples

Embodiment 1

[0030] An electrocatalytic oxidation catalytic filler is prepared by roasting after mixing a catalyst carrier and a metal catalyst solution, wherein the catalyst carrier is a mixture of clay minerals and a curing agent, and the metal catalyst solution is Cu 2+ / Mn 2+ mixed solution.

[0031] In this embodiment, the clay mineral is a mixture of clay, diatomaceous earth and bentonite, wherein the mass ratio of clay, diatomaceous earth and bentonite is 5:2:3.

[0032] In this embodiment, the curing agent is a silica gel solution with a mass concentration of 30% (the solvent is water); the mass of the curing agent is 0.05% of the clay mineral mass.

[0033] In this example, Cu 2+ / Mn 2+ The mixed solution is a mixed solution of copper acetate and manganese acetate, wherein Cu in the mixed solution of copper acetate and manganese acetate 2+ , Mn 2+ The molar ratio is 1:1, and the mass percentage of copper acetate and manganese acetate in the mixed solution of copper acetate and ...

Embodiment 2

[0039] A three-dimensional electrocatalytic oxidation device, comprising an anode and a cathode, wherein the electrocatalytic oxidation filler prepared in Example 1 is filled between the anode and the cathode.

[0040] In this embodiment, the three-dimensional electrocatalytic oxidation device has a cylindrical structure, and the center is IrO 2 -RuO 2 The / Ti rod is used as the anode, and the surrounding stainless steel plate is used as the cathode.

[0041] In this example, IrO 2 -RuO 2 The diameter of the / Ti rod is 100mm; the diameter of the cathode is 400mm, and the effective height of the anode and cathode is 6000mm.

[0042] The three-dimensional electrocatalytic oxidation device in Example 2 is organically combined with the stripping tower to form a three-dimensional electrocatalytic oxidation stripping tower, and the treatment effect of the three-dimensional electrocatalytic oxidation stripping tower on pyrimiphos-methyl wastewater is investigated at the same time,...

Embodiment 3

[0061] An electrocatalytic oxidation catalytic filler is prepared by roasting after mixing a catalyst carrier and a metal catalyst solution, wherein the catalyst carrier is a mixture of clay minerals and a curing agent, and the metal catalyst solution is Cu 2+ / Mn 2+ mixed solution.

[0062] In this embodiment, the clay mineral is a mixture of clay, diatomite and bentonite, wherein the mass ratio of clay, diatomite and bentonite is 6:3:1.

[0063] In this embodiment, the curing agent is water glass with a mass concentration of 30%; the quality of the curing agent is 0.05% of the clay mineral weight.

[0064] In this example, Cu 2+ / Mn 2+ The mixed solution is a mixed solution of copper acetate and manganese acetate, wherein Cu in the mixed solution of copper acetate and manganese acetate 2+ , Mn 2+ The molar ratio is 1:2, and the mass percent content of copper acetate and manganese acetate in the mixed solution of copper acetate and manganese acetate is 10%; the mass perc...

Images