Abstract：In this study, microbial reduction method was used to determine the optimal reduction effect. The results showed that under the condition of one-time feeding, equipment temperature controlled at 60℃ and the dosage of microbial agent accounted for 4% of the dry weight of sludge, the optimal reduction effect was:the water, dry matter and toxic substances (i.e. Co) reduction rate reached 79.4%, 22%, and 9%, respectivity. Based on correlation analysis and principal component analysis, temperature, electrical conductivity, humic/fulvic acid ratio, carbon/nitrogen ratio and dissolved organic carbon, as well as 8genera (i.e. Novosphingobium, Nitrospira, Azohydromonas, Gemmatimonas, Pseudomonas, Pelotomaculum, Paeniglutamicibacter and Weissella) were determined as the key factors affecting the bio-reduction effect. The research results provide a scientific basis for the bio-reduction ofPTA sewage sludge in chemical fiber plants.
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SHEN Yue, HU Xiu-ren, TIAN Gan-pei, BIAN Bo. Study on bio-reduction effect and influenceingfactors of PTA sewage sludge in chemical fiber plant. CHINA ENVIRONMENTAL SCIENCECE, 2020, 40(5): 2140-2147.
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