Normal-temperature air wet oxidation catalyst used for residuum processing wastewater deodorization reuse

A technology for processing wastewater and air at normal temperature, which is applied in metal/metal oxide/metal hydroxide catalysts, physical/chemical process catalysts, oxidized water/sewage treatment, etc. It can solve the need for further treatment of flocculated sludge and the cost of wastewater treatment High efficiency, high consumption of reagents and other issues, achieve good deodorization effect, reduce deodorization cost, and mild operating conditions

Inactive Publication Date: 2013-08-14
ZHEJIANG OCEAN UNIV
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Problems solved by technology

[0004] The above several waste water deodorization methods have weak points: 1) consume a large amount of reagents (such as flocculant, H 2 o 2 oxidant), not only the cost is high, but also the

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Embodiment Construction

[0011] The present invention will be further described in detail below in conjunction with the embodiments.

[0012] A room temperature air wet oxidation catalyst for the deodorization and reuse of residual oil processing wastewater. The catalyst is made of activated alumina (γ-Al 2 O 3 , The diameter is 2~3mm) as the carrier, with transition metal elements such as Fe, Cu, Ni or Co as the main active ingredients, while using additives such as alkaline earth metals, rare earth metal elements Ba, Ce, La, etc. as structural additives. Rare earth elements, elements that can form oxide semiconductors, such as Ti and Zn, are used as electronic assistants and are prepared by a stepwise precipitation-dipping method. The components include transition metal oxides, rare earth metal oxides and conductive metal oxides. The mass percentages of transition metal oxides, rare earth metal oxides and semiconductor metal oxides in the catalyst are 3.0-4.0 wt%, 1.0-2.0 wt%, and 7.8-8.8 wt%, respectiv...

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Abstract

The invention relates to a normal-temperature air wet oxidation catalyst used for residuum processing wastewater deodorization reuse. The catalyst is characterized in that the catalyst is obtained by treating active alumina as a carrier and a transition metal element as a main active component through a fractional deposition-immersion method, and the catalyst comprises 3.0-4.0wt% of a transition metal oxide, 1.0-2.0wt% of a rare earth metal oxide and 7.8-8.8wt% of a semiconductor metal oxide. The catalyst has the advantages of good deodorizing effect, effective removal of sulfides and ammonia nitrogen in wastewater, reduction of the COD of the wastewater, regeneration performance, reusability, no formation of new pollution, mild operation condition, and substantial reduction of the deodorization cost of the wastewater through utilizing air as an oxidant.

Description

Technical field [0001] The waste water treatment field of the present invention is specifically a room temperature air wet oxidation catalyst used for the deodorization and reuse of residual oil processing waste water. Background technique [0002] Coking (or delayed coking) is an important method of residual oil processing. A large amount of cold coking water and cutting coke water are required in the process of coking the residual oil (Zhang Tiegang, Sui Xuying, Li Botao, Ji Hemu. Water saving measures for delayed coking devices[J] ]. Energy saving and environmental protection, 2008, (11): 9-11), the cold coke water and cut coke water after use contain sulfides, mercaptans, sulfides, disulfides, ammonia, volatile phenols, benzenes, and anilines Foul-smelling substances such as species. As the cold coke water and coke cut water are recycled in the delayed coking unit, the odorous substances are enriched in the cold coke water and cut coke water and dispersed into the atmosphere...

Claims

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Application Information

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IPC IPC(8): B01J23/83C02F1/74
Inventor 陈英丁建魏纪龙陈东石雄伟
Owner ZHEJIANG OCEAN UNIV
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