化纤厂PTA废水处理污泥生物减量效果及影响因子

通过小试试验研究PTA废水处理污泥生物减量效果及影响因子，结果表明，一次性进料、设备温度60℃、菌剂占污泥干基比例4%，可实现污泥含水率、干物质和毒性物质（钴）分别减少79%、22%和9%的最佳减量效果.基于污泥生物减量过程中多参数、三维荧光和微生物属水平变化并结合相关和主成分分析，探明了影响PTA污泥生物减量的关键因子分别为温度、电导率、胡富比、碳氮比、溶解性有机碳和8种微生物菌属（即为Gemmatimonas、Pelotomaculum、Azohydromonas、Pseudomonas、Paeniglutamicibacter、Weissella、Nitrospira、Novosphingobium）.研究结果可为化纤厂PTA污泥生物减量提供科学依据.

Study on bio-reduction effect and influenceingfactors of PTA sewage sludge in chemical fiber plant

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.