Improving the simultaneous removal of chemical oxygen demand and terephthalic acid in a cross-flow aerobic sludge reactor by using response surface methodology.
Improving the simultaneous removal of chemical oxygen demand and terephthalic acid in a cross-flow aerobic sludge reactor by using response surface methodology.
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DOI：
10.2166/wst.2015.171
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发表时间：
2015-06
期刊：
影响因子：
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通讯作者：
Dong-xue Hu;Yu Tian;Zhaobo Chen;Hui Ge;Yu-bo Cui;Chun-qiu Ran
中科院分区：
文献类型：
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作者：
Dong-xue Hu;Yu Tian;Zhaobo Chen;Hui Ge;Yu-bo Cui;Chun-qiu Ran
采用星点设计-响应面法（RSM）对错流好氧污泥反应器（CFASR）处理混合印染废水（MPDW）的运行参数进行优化。研究了水力停留时间（HRT）、pH和污泥负荷率（SLR）对COD和TA去除率的影响。在HRT为15.3- 19.8h、pH为7.2-8.1、SLR为0.4- 0.6kg/kg混合液悬浮物/d的条件下，CFASR对COD和TA的去除率分别超过85%和90%。对比试验表明，优化后的CFASR出水COD稳定在100 mg/L以下，TA浓度比常规CFASR降低6.0%。研究结果表明，响应面法可用于CFASR反应器的运行参数优化。
Central composite design and response surface methodology (RSM) were implemented to optimize the operational parameters for a cross-flow aerobic sludge reactor (CFASR) in remedying mixed printing and dyeing wastewater (MPDW). The individual and interactive effects of three variables, hydraulic retention time (HRT), pH and sludge loading rate (SLR), on chemical oxygen demand (COD) and terephthalic acid (TA) removal rates were evaluated. For HRT of 15.3-19.8 hours, pH of 7.2-8.1 and SLR of 0.4-0.6 kg chemical oxygen demand (COD) per kg mixed liquor suspended solids per day, COD and TA removal rates of the CFASR exceeded 85% and 90%, respectively. The check experiment revealed that the effluent from the optimized CFASR was stable below the limitation of 100 mg COD/L and the TA concentration decreased by 6.0% compared to the usual CFASR. The results verified that the RSM was useful for optimizing the operation parameters of the CFASR in remedying MPDW.