Catalyst for treating refractory wastewater, preparation method and preparation equipment

A wastewater treatment and catalyst technology, which is applied in water treatment parameter control, physical/chemical process catalysts, water/sewage treatment, etc., can solve the problems of difficult continuous production of catalysts, insufficient catalyst wastewater treatment capacity, etc., to improve degradation ability, Improve performance and improve the effect of uniformity

Pending Publication Date: 2021-05-04
江苏鼎弘环境科技有限公司
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  • Claims
  • Application Information

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Problems solved by technology

[0003] In order to solve the problem of insufficient wastewater treatment capacity of existing catalysts for wastewater treatment and the difficulty in continuous production of catalyst preparation, the present invention proposes a catalyst, preparation method and preparation equipment for refractory wastewater treatment

Method used

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  • Catalyst for treating refractory wastewater, preparation method and preparation equipment
  • Catalyst for treating refractory wastewater, preparation method and preparation equipment
  • Catalyst for treating refractory wastewater, preparation method and preparation equipment

Examples

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Effect test

preparation example Construction

[0025] Adopt the preparation method of the catalyst of a kind of refractory wastewater treatment as described above, comprise the steps:

[0026] S101: preparing nanometer zero-valent iron;

[0027] S102: The first component can be prepared by mixing nano zero-valent iron, activated powdered carbon and graphene according to the mass ratio;

[0028] S103: put copper nitrate into the first component according to the mass ratio, and add catalytic hydrogen peroxide and catalytic persulfate to prepare the catalyst.

[0029] The preparation of nanometer zero valent iron comprises the following steps:

[0030] S201: Put iron balls, iron powder and p-nitrophenol with a diameter of 1.8 to 2 mm into the polytetrafluoroethylene ball grinding pot;

[0031] S202: putting the polytetrafluoroethylene ball milling pot into a microwave oven for microwave-assisted ball milling to prepare nanometer zero-valent iron.

specific Embodiment

[0033] The effluent COD of a disperse dye production plant in Zhejiang is 796-896mg / L in the secondary treatment. The enterprise originally used the Fenton treatment process for the tertiary treatment. The effluent COD has been at 600mg / L, and the removal rate is 20-25%. With equipment, process and catalyst operation, the effluent COD has been maintained at 278-316mg / L, meeting the entry standards of centralized sewage treatment plants at this stage, and the COD is below 500mg / L.

[0034] A catalyst preparation device for refractory wastewater treatment as described above, comprising a mixing structure 10, a synthesis structure 20 and a discharge structure 30, the mixing structure 10 is arranged on the upper side of the synthesis structure 20, and is connected with the synthesis structure 20 The synthesis structure 20 is connected, the synthesis structure 20 is arranged on the upper side of the discharge structure 30, and communicates with the discharge structure 30, the mixing...

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Abstract

The invention discloses a catalyst for treating refractory wastewater. The catalyst comprises a first component composed of nano scale zero-valent iron, powdered activated carbon and graphene and a second component namely copper nitrate. The invention also discloses a preparation method of the catalyst for treating refractory wastewater. The preparation method comprises the following steps: preparing nano scale zero-valent iron; mixing the raw materials according to the mass ratio; and adding copper nitrate into the first component according to the mass ratio, and adding catalytic hydrogen peroxide and catalytic persulfate to prepare the catalyst. The invention also discloses a preparation device of the catalyst for treating refractory wastewater. The preparation device comprises a mixing structure, a synthesis structure and a discharge structure, the mixing structure comprises a feed inlet, a dispersion valve and a mixing cavity, and the dispersion valve comprises a valve blade with a plurality of through holes, a rotating shaft and an inclined pipe. Therefractory wastewater is treated through a catalyst, the preparation method of the catalyst is improved, and solid fine particles of the raw materials are reasonably matched, so that the mixing uniformity is effectively improved, and the performance of the catalyst is improved.

Description

technical field [0001] The invention relates to the technical field of waste water treatment, in particular to a catalyst, preparation method and preparation equipment for refractory waste water treatment. Background technique [0002] Advanced oxidation technology is usually used for the advanced treatment of wastewater, and its activators are usually transition metals and their derivatives. For refractory wastewater, due to its stable structure and strong oxidation resistance, conventional advanced oxidation and its catalyst activation oxidation have achieved The effect of the catalyst often fails to reach the expected effect, resulting in a large consumption of reagents. At the same time, in the preparation process of the catalyst, due to the particularity of the raw materials, it is difficult to continuously produce the catalyst. Contents of the invention [0003] In order to solve the problem of insufficient wastewater treatment capacity of existing catalysts for wast...

Claims

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Application Information

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IPC IPC(8): B01J27/25C02F1/72
CPCB01J27/25B01J23/745B01J21/18C02F1/722C02F1/725C02F2209/08B01J35/19
Inventor 徐忠杨强舜匡金陶鲁超
Owner 江苏鼎弘环境科技有限公司
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