Optimization of H2O2 dosage in microwave-H2O2 process for sludge pretreatment with uniform design method

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	Optimization of H2O2 dosage in microwave-H2O2 process for sludge pretreatment with uniform design method
	Xiao, Qingcong ; Yan, Hong ; Wei, Yuansong ; Wang, Yawei ; Zeng, Fangang ; Zheng, Xiang
刊名	Environmental Sciences & Ecology
	2012
卷号	24 期号:12 页码:2060-2067
关键词	H2O2 dosage uniform design method microwave optimization sludge pretreatment
ISSN号	1001-0742
中文摘要	A microwave-H2O2 process for sludge pretreatment exhibited high efficiencies of releasing organics, nitrogen, and phosphorus, but large quantities of H2O2 residues were detected. A uniform design method was thus employed in this study to further optimize H2O2 dosage by investigating effects of pH and H2O2 dosage on the amount of H2O2 residue and releases of organics, nitrogen, and phosphorus. A regression model was established with pH and H2O2 dosage as the independent variables, and H2O2 residue and releases of organics, nitrogen, and phosphorus as the dependent variables. In the optimized microwave-H2O2 process, the pH value of the sludge was firstly adjusted to 11.0, then the sludge was heated to 80 degrees C and H2O2 was dosed at a H2O2:mixed liquor suspended solids (MLSS) ratio of 0.2, and the sludge was finally heated to 100 degrees C by microwave irradiation. Compared to the microwave-H2O2 process without optimization, the H2O2 dosage and the utilization rate of H2O2 in the optimized microwave-H2O2 process were reduced by 80% and greatly improved by 3.87 times, respectively, when the H2O2:MLSS dosage ratio was decreased from 1.0 to 0.2, resulting in nearly the same release rate of soluble chemical oxygen demand in the microwave-H2O2 process without optimization at H2O2:MISS ratio of 0.5.
WOS记录号	WOS:000313389300004
公开日期	2014-11-28
内容类型	期刊论文
源URL	[http://ir.rcees.ac.cn/handle/311016/8185]
专题	生态环境研究中心_水污染控制实验室
推荐引用方式 GB/T 7714	Xiao, Qingcong,Yan, Hong,Wei, Yuansong,et al. Optimization of H2O2 dosage in microwave-H2O2 process for sludge pretreatment with uniform design method[J]. Environmental Sciences & Ecology,2012,24(12):2060-2067.
APA	Xiao, Qingcong,Yan, Hong,Wei, Yuansong,Wang, Yawei,Zeng, Fangang,&Zheng, Xiang.(2012).Optimization of H2O2 dosage in microwave-H2O2 process for sludge pretreatment with uniform design method.Environmental Sciences & Ecology,24(12),2060-2067.
MLA	Xiao, Qingcong,et al."Optimization of H2O2 dosage in microwave-H2O2 process for sludge pretreatment with uniform design method".Environmental Sciences & Ecology 24.12(2012):2060-2067.