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A new-type composite flocculant, Polysilicate Aluminum Ferric-Chitosan (PSAF-CTS), was prepared using polysilicate aluminum ferric (PSAF) and Chitosan(CTS). The performance of PSAF-CTS was analyzed by testing turbidity and chrominance of papermaking wastewater, as well as removal efficiency of Cu2+, Ni2+, Zn2+, Cd2+, Cr6+ of heavy-metal wastewater. The orthogonal experiments showed that the optimal...
At present, the neutralization and precipitation treatment is mostly applied in acid mine drainage treatment, which is widely used and with low running cost and so forth, but biggest problem is that the sediments float in the secondary settling tank and settle down difficultly, then the effluent always can't comply with the wastewater discharge standard. The acid mine drainage samples were from a...
A kind of aspergillus niger which was isolated from soil was inoculated with Czapek-Dox liquid medium. Controling the experimental conditions, microbial flocculant MF-1 was prepared. MF-1 was adopted for the treatment of midcourse wastewater in papermaking factory. The influence to the flocculation effect of the dosage of flocculant, addition of metal ions, temperature, pH value, and flocculant stirring...
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