State Key Laboratory of Urban Water Resource and Environment, Harbin Institute of Technology, Harbin 150090, PR China.
Bioresour Technol. 2013 Sep;143:642-6. doi: 10.1016/j.biortech.2013.05.119. Epub 2013 Jun 5.
The present study investigated the synergistic effects of a novel combined uncoupler of TCS and TCP on excess activated sludge reduction during a 60-day operation using a sequence batch reactor (SBR). Response surface methodology (RSM) was employed to obtain the optimal dosage of the combined uncoupler. The results of 60-day operation demonstrated the combined uncoupler had effectively reduced the sludge yield by approximately 52%, without serious affecting the substrate removal efficiency. The high sludge reduction rate revealed that it was feasible and effective to utilize a combined uncoupler to limit excess activated sludge. The three-dimensional excitation-emission matrix (EEM) fluorescence spectroscopy analysis of activated sludge with different metabolic uncouplers indicated that tryptophan, tyrosine protein-like substances and tryptophan, tyrosine amino-like substances were reduced by adding a combined uncoupler. Moreover, the variation of sludge components provided a better understanding of the effects of uncouplers on activated sludge reduction.
本研究采用序批式反应器（SBR），考察了新型联合解偶联剂 TCS 和 TCP 对过剩活性污泥在 60 天运行期间的协同减排效果。采用响应面法（RSM）确定了联合解偶联剂的最佳投加量。60 天运行结果表明，该联合解偶联剂可有效降低污泥产率约 52%，同时不会严重影响基质去除效率。高污泥削减率表明，利用联合解偶联剂限制过剩活性污泥是可行且有效的。不同代谢解偶联剂作用下的活性污泥三维激发-发射矩阵（EEM）荧光光谱分析表明，添加联合解偶联剂可减少色氨酸、酪氨酸蛋白类物质和色氨酸、酪氨酸氨基酸类物质。此外，污泥成分的变化为解偶联剂对活性污泥减排的影响提供了更好的理解。
