State Key Laboratory of Urban Water Resource and Environment, Harbin Institute of Technology, Harbin 150090, PR China.
State Key Laboratory of Urban Water Resource and Environment, Harbin Institute of Technology, Harbin 150090, PR China.
Bioresour Technol. 2015 Feb;177:194-203. doi: 10.1016/j.biortech.2014.11.009. Epub 2014 Nov 11.
An ozone/ultrasound lysis-cryptic growth technology combining a continuous flow anaerobic-anoxic-microaerobic-aerobic (AAMA+O3/US) system was investigated. Techno-economic evaluation and sludge lyses return ratio (r) optimization of this AAMA+O3/US system were systematically and comprehensively discussed. Economic assessment demonstrated that this AAMA+O3/US system with r of 30% (AAMA+O3/US2# system) was more economically feasible that can give a 14.04% saving of costs. In addition to economic benefits, a 55.08% reduction in sludge production, and respective 21.17% and 5.45% increases in TN and TP removal efficiencies were observed in this AAMA+O3/US2# system. Considering the process performances and economic benefits, r of 30% in AAMA+O3/US2# system was recommended. Excitation-emission matrix and Fourier transform infrared spectra analyses also proved that less refractory soluble microbial products were generated from AAMA+O3/US2# system. Improvement in 2,3,5-triphenyltetrazolium chloride electron transport system (TTC-ETS) activity in AAMA+O3/US2# further indicated that a lower sludge lyses return ratio stimulated the microbial activity.
研究了一种臭氧/超声裂解-隐蔽生长技术，该技术结合了连续流厌氧-缺氧-微氧-好氧（AAMA+O3/US）系统。系统全面地讨论了该 AAMA+O3/US 系统的技术经济评估和污泥裂解返回比（r）优化。经济评估表明，r 为 30%的 AAMA+O3/US 系统（AAMA+O3/US2#系统）具有更高的经济可行性，可以节省 14.04%的成本。除了经济效益外，该 AAMA+O3/US2#系统还观察到污泥产量减少了 55.08%，TN 和 TP 去除效率分别提高了 21.17%和 5.45%。考虑到工艺性能和经济效益，推荐在 AAMA+O3/US2#系统中 r 为 30%。激发发射矩阵和傅里叶变换红外光谱分析也证明，AAMA+O3/US2#系统产生的难生物降解可溶性微生物产物较少。AAMA+O3/US2#系统的 2,3,5-三苯基氯化四氮唑电子传递系统（TTC-ETS）活性的提高进一步表明，较低的污泥裂解返回比刺激了微生物的活性。
