响应面优化铁碳微电解法预处理富营养化湖水的工艺条件  

Process Conditions of Iron-Carbon Micro-Electrolysis for Eutrophic Lake Water Pretreatment by Response Surface Methodology

作　　者：吴超 蒋善庆 李宛科 聂郁丰 凌泽玉 王利平 WU Chao;JIANG Shanqing;LI Wanke;NIE Yufeng;LING Zeyu;WANG Liping(School of Environmental & Safety Engineering, Changzhou University, Changzhou 213164, China)

机构地区：[1]常州大学环境与安全工程学院

出　　处：《净水技术》2019年第4期79-86,111,共9页Water Purification Technology

基　　金：国家自然科学基金项目(21477050);国家自然科学基金项目(21607017);常州国际科技合作计划(CZ20140017)

摘　　要：利用铁碳微电解工艺预处理富营养化湖水,考察了初始pH、铁碳总投加量和反应时间3个因素对富营养化水体中TP、TN、COD和Chl-a去除效果的影响,并运用响应面法对该工艺参数进行了优化与预测。结果表明,优化后的铁碳微电解预处理最佳工艺条件如下:初始pH值为3.8,铁碳投加量为13.7g,反应时间为29.6min。该条件下对TP、TN、COD、Chl-a的去除率分别达到84.2%、48.7%、77.7%、71.8%,这一结果与预测值相接近,进一步表明该工艺对富营养化湖水具有较好的预处理效果,且基于响应面法建立的二次多项式模型具有较好的实际应用价值。The lake water was pretreated by iron-carbon micro-electrolysis process. Effects of initial pH value, total dosage of iron-carbon and reaction time on the removal efficiency of TP, TN, COD and Chl-a in eutrophic lake water were investigated. And process parameters were also optimized and predicted by the response surface methodology. The results showed that optimized pretreatment condition by iron-carbon micro-electrolysis such as initial pH value, total dosage of iron-carbon and reaction time were 3.8, 13.7 g and 29.6 min, respectively. And the removal efficiency of TP, TN, COD and Chl-a were 84.2%, 48.7%, 77.7% and 71.8% at above condition, respectively. The actual result was close to the predicted value, indicating that iron-carbon micro-electrolysis process had a good pretreatment ability on eutrophic water, and the established model based on response surface methodology had an excellent practical guidance value.

关 键 词：响应面法 铁碳微电解 湖水 预处理 CHL-A 

分 类 号：X703[环境科学与工程—环境工程]