基于响应面法的给水厂污泥固化配比优化  

Optimization of Sludge Solidification Ratio in Water Supply Plant Based on ResponseSurfaceMethod

作　　者：赵吉 颜鹏 秦庆东[2] 杨晶晶 ZHAO Ji;YAN Peng;QIN Qing-dong;YANG Jing-jing(Huayan Environmental InvestmentCo.Ltd.,Changzhou 213000,China;School of Civil Engineering,Southeast University,Nanjing 211189,China;School of Environmental Science and Engineering,Suzhou University of Science and Technology,Suzhou 215009,China;Key Laboratory of Suzhou Sponge City Technology,Suzhou 215009,China)

机构地区：[1]华衍环境投资<江苏>有限公司,江苏常州213000 [2]东南大学土木工程学院,江苏南京211189 [3]苏州科技大学环境科学与工程学院,江苏苏州215009 [4]苏州市海绵城市技术重点实验室,江苏苏州215009

出　　处：《中国给水排水》2023年第7期63-68,共6页China Water & Wastewater

基　　金：苏州市科技计划项目(SS202107)。

摘　　要：为实现给水厂污泥资源化利用,选取生石灰、硅酸盐水泥和高吸水树脂对给水厂污泥进行固化处理。基于单因素试验对给水厂污泥固化参数进行初步筛选,采用响应面法设计复合固化剂的试验方案,以7 d无侧限抗压强度为响应值,确定固化剂最优配比。结果表明:影响无侧限抗压强度的固化剂排序为生石灰>硅酸盐水泥>高吸水树脂;生石灰和硅酸盐水泥的交互作用显著;生石灰、硅酸盐水泥和高吸水树脂的最佳掺量分别为47.43%、13.11%和0.45%,在此条件下,固化污泥的7 d无侧限抗压强度为0.51 MPa。响应面模型对无侧限抗压强度的预测值与实测值接近,说明模型可信度较高,这可以为实际工程应用提供设计参考。Lime,silicate cement and super absorbent resin were selected to solidify and recycle the sludge from a water supply plant.The solidifying parameters of the sludge from the water supply plant were initially selected based on single factor experiment.The experimental plan for composite curing agent was designed by response surface method,and the optimal composition of curing agent was determined by taking 7-day unconfined compressive strength as the response value.The curing agents influencing the unconfined compressive strength in descending order were as follows:lime,silicate cement and super absorbent resin.The interaction between lime and silicate cement was significant.The optimal proportions of lime,silicate cement and super absorbent resin were 47.43%,13.11% and 0.45%,and the 7-day unconfined compressive strength of solidified sludge was 0.51 MPa.The predicted values of the unconfined compressive strength obtained by the response surface model were close to the measured values,indicating that the model was highly reliable.The experimental results can provide reference for practical engineering application.

关 键 词：给水厂污泥 响应面法 固化剂 配比优化 无侧限抗压强度 

分 类 号：TU991[建筑科学—市政工程]