响应面法优化混凝预处理垃圾渗滤液 - 河北师范大学学报.pdfVIP

36 / 4 / 河北师范大学学报/ / Vol. 36 No. 4 2012 7 JOURNALOFHEBEI NORMAL UNIVERSITY/ Natural Science Edition/ Jul. 2012 响应面法优化混凝预处理垃圾渗滤液 张 勇, 何士龙 ( , 221116) : ( CCD) ( RSM) ( PAC) ( PAM) ( COD) ( NH - N) . Design- ex- 3 pert7. 1 , , . , , . : PAC 4 mg/ L, PAM 1 mg/ L, COD 4 1. 44 % , 29. 7 % , , 4.42 kg/ ( ) . : ; ; ; :X 7 3. 1 :A : 1 -5854(2 12) 4- 4 3- 6 Optimization of Pretreatment of Landfill Leachate by Coagulation Using Response Surface Methodological Analysis ZHANG Yong, HE Shilong ( School of Environmental Science and Spatial Informatics, China University of Mining and Technology, Jiangsu Xuzhou 221116,China) Abstract: Central composite design ( CCD) of the response surface methodology was employed to investigate the effects of polyaluminum chloride ( PAC) dosage and polyacrylamide ( PAM) dosage on the removal rate of chemical oxygen demand, ammonia nitrogen and economy index. Design-expert7. 1 softw are w as used in exper-i mental design and a apredictive polynomial quadratic equation models were developed by solving the quadratic e- quation as well as analyzing the response surface plots and their corresponding contour plots. Response surface analysis results showed that independent variables had significant correlation w ith the response value, and the ex- perimental values agreed w ith the predicted values of the model equation. The optimum results of coagulation ex- periment w ere determined to be 4 mg/ L PAC( 1g/ L) , 1 mg/ L PAM( 5 mg/ L) , the removal rate of COD in landfill leachate was up to 41. 44 %, meanwhile 29. 7 % ammonia nitrogen w as removed, and economic perfor- mance w as best, up to 4. 42 kg/ yuan( calculated w