Guangxi University

Other

Guangxi University College of Light Industry and Food Engineering

Jian Zhang

Chengrong Qin

Zhiwei Wang

Shuangfei Wang

Peng Gan

Shanshan Zhao

Ling Peng

Chen Liang

Xinliang Liu

Wei Li

Shuangquan Yao

Jiulong Sha

Jingyang Lu

The disclosure provides a method for preparing an amphiphilic lignin nanomaterial based on pulping black liquor, an amphiphilic lignin nanomaterial, and an oil sludge detergent. In the disclosure, physical treatments such as ball milling and high-pressure jet homogenization treatment are conducted on alkali lignin at the early stage to adjust the molecular weight and size of alkali lignin and thus to give alkali lignin nanoparticles with uniform particle sizes; and on this basis, a chemical treatment such as alkylation grafting modification is conducted to give amphiphilic lignin nanoparticles with both hydrophilicity and lipophilicity. Due to the nano-size effect, the amphiphilic lignin nanomaterial has a significantly-increased specific surface area (SSA) and effectively-improved surface properties, which can reduce the oil-water interfacial tension, and emulsify the crude oil and peel off the crude oil from the surface of rock particles, so as to achieve the purpose of oil-solid separation.

Method for preparing amphiphilic lignin nanomaterial based on pulping black liquor, amphiphilic lignin nanomaterial, and oil sludge detergent

A phosphorus-based calcification inhibitor ('inhibitor') configured to prevent calcification of anaerobic granular sludge.

Composite phosphorus-based calcification inhibitor

The present invention belongs to the technical field of wastewater treatment, and particularly relates to a method for pre-conditioning high-calcium wastewater by calcification blocking, and a device for implementing the method. The method for treating high-calcium wastewater by calcification blocking includes mixing high-calcium wastewater, an alkalizing agent and a chelating agent, and carrying out alkalizing conditioning pretreatment under a condition of stirring by bubbling of a biogas, so as to obtain pre-conditioned wastewater. The pre-conditioned wastewater is mixed with anaerobic granular sludge, and an anaerobic reaction is performed in a high hydraulic shear flow field formed by the biogas, so as to generate the biogas and calcium scale. A part of the biogas for the stirring is refluxed by bubbling of the biogas and the rest of the biogas is refluxed for forming the high hydraulic shear flow field.

Method and device for treating high-calcium wastewater by calcification blocking

Embodiments of the present invention pertain to a composite decalcification agent of calcified anaerobic granular sludge and a decalcification regeneration process.

Composite decalcification agent

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Nanning, China

Jian Zhang