Tongji University

Weixian Zhang

Jing Liu

Yue H Wang

Wei Teng

Jianwei Fan

Xianqiang Ran

Bei Yu

Shaolin Li

Xiaoqian Chen

Yuxiang Shi

Nuo Liu

Airong Liu

Mechano-chemical wastewater treatment equipment to treat wastewater containing heavy metals to form drainage. An intermediate sewage tank has a sewage inlet and a sewage outlet, and stores wastewater to be treated and sewage formed during the treatment process. At least one mechano-chemical reactor conducts the mechano-chemical reaction between the wastewater and zero-valent iron nanoparticles through a ball milling treatment. A separator to separate a slurry produced by the reactor into solids and liquids. The separator has a slurry inlet, a liquid outlet, and a sludge outlet. The reactor is a ball milling device having a reactor shell with a reaction chamber internally formed, a feeding inlet for the slurry to enter the reaction chamber and a discharge outlet for the slurry to flow out of the reaction chamber. A rotor is set inside the reaction chamber and a driving mechanism rotates the rotor.

Mechano-chemical wastewater treatment equipment

A nano zero valent iron biological coupling device for organic wastewater includes a continuous flow stirred reactor, a flocculation sedimentation device and a membrane bioreactor arranged in series. A nano zero valent iron feeding device is arranged in the continuous flow stirred reactor, a flocculant and a coagulant aid are arranged in the flocculation sedimentation device, and a microbial reaction liquid is arranged in the membrane bioreactor. A nano iron biological coupling process includes: S, placing the organic wastewater in the continuous flow stirred reactor, adding the nano zero valent iron, stirring and mixing; S, placing the organic wastewater treated after Sin the flocculation sedimentation device; S, placing the organic wastewater treated after Sin the membrane bioreactor and interacting with the microbial reaction liquid; S, performing a membrane separation on the organic wastewater treated after Sin the membrane bioreactor to obtain purified organic wastewater.

Nano iron biological coupling device for organic wastewater and its process

A copper-palladium-loaded mesoporous silicon carbide-based catalyst, a preparation method, and an application thereof are provided. First, a mesoporous silicon carbide material is prepared by using mesoporous silica as a hard template; subsequently, the mesoporous silicon carbide material is mixed with a copper-palladium precursor mixed solution, and dried after the solvent is completely volatilized. The dried powder is successively subjected to calcination with Nand reduction with Hto finally obtain the copper-palladium-loaded mesoporous silicon carbide-based catalyst. The catalyst is made into an electrode, and the nitrate in water body is catalytically reduced by electrochemical method. The preparation method of the catalyst of the present invention is simple. The catalyst can realize high-efficiency catalytic denitrification at a low metal loading amount, with high selectivity of nitrogen. Moreover, the catalyst has the advantages of high activity, good stability, wide application range and low cost.

Copper-palladium-loaded mesoporous silicon carbide-based catalyst, preparation method and application thereof

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Shanghai, China

Weixian Zhang