[1]毛林强,吴韵秋,张文艺,等.水泥、粉煤灰固化电镀污泥响应曲面法优化研究[J].常州大学学报(自然科学版),2019,31(05):56-62.[doi:10.3969/j.issn.2095-0411.2019.05.009]
　MAO Linqiang,WU Yunqiu,ZHANG Wenyi,et al.Stabilization of Electroplating Sludge with Cement and Fly Ash and Optimization Using Response Surface Methodology[J].Journal of Changzhou University(Natural Science Edition),2019,31(05):56-62.[doi:10.3969/j.issn.2095-0411.2019.05.009]
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水泥、粉煤灰固化电镀污泥响应曲面法优化研究()
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常州大学学报(自然科学版)[ISSN:2095-0411/CN:32-1822/N]

卷:
第31卷
期数:
2019年05期
页码:
56-62
栏目:
环境科学与工程
出版日期:
2019-09-28

文章信息/Info

Title:
Stabilization of Electroplating Sludge with Cement and Fly Ash and Optimization Using Response Surface Methodology
文章编号:
2095-0411(2019)05-0056-07
作者:
毛林强; 吴韵秋; 张文艺; 彭明国
(常州大学 环境与安全工程学院,江苏 常州 213164)
Author(s):
MAO Linqiang;  WU Yunqiu;  ZHANG Wenyi;  PENG Mingguo
(School of Environmental & Safety Engineering, Changzhou University, Changzhou 213164, China)
关键词:
水泥;  粉煤灰;  固化;  无侧限抗压强度;  浸出毒性
Keywords:
cement;  fly ash;  solidification;  unconfined compressive strength;  leaching toxicity
分类号:
X 781
DOI:
10.3969/j.issn.2095-0411.2019.05.009
文献标志码:
A
摘要:
以水泥、粉煤灰为固化剂固化电镀污泥,通过正交试验考察不同固化剂中水泥添加量、粉煤灰添加量、养护时间下无侧限抗压强度和重金属浸出毒性,并通过Design-expert软件优化预测最佳固化剂配方。正交试验结果表明对无侧限抗压强度的影响从大到小为养护时间、水泥添加量、粉煤灰添加量,最优的实验条件为m(电镀污泥):m(水泥):m(粉煤灰)=1:1:0.3,最佳养护时间为21 d。Design-expert软件优化得到的理论最佳条件为:m(电镀污泥):m(水泥):m(粉煤灰)=1:1:0.36,养护龄期21 d,该条件下试块的无侧限抗压强度预测值为310.036 kPa。在此条件下制备的固化试块经重金属浸出毒性检测达到《危险废物鉴别标准—浸出毒性鉴别》标准要求。表明采用向水泥中掺入粉煤灰是一种潜在的、有效的固化电镀污泥方法。
Abstract:
Solidification of electroplating sludge with cement and fly ash was conducted. Properties of matrix such as unconfined compressive strength and heavy metals leaching toxicity were investigated by using the orthogonal test and the software of Design-expert. The experimental results revealed that the content of cement played an important role in unconfined compressive strength. The optimum mass fraction ratio of electroplating sludge, cement and fly ash was 1:1:0.3, and the optimal curing time was 21 d. The optimum mass fraction ratio of electroplating sludge, cement and fly ash was 1:1:0.36, and the optimal curing time was 21 d, which was obtained from the fitting by the software of Design-expert. The unconfined compressive strength of matrix prepared at optimum condition was predicted at 310.036 kPa. In addition, the concentration of heavy metals was below the identification standards for hazardous wastes(GB 5085.3—2007). These results showed that the solidification of electroplating sludge with cement and fly ash was a potential and effective strategy for reducing leachability of heavy metals.

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备注/Memo

备注/Memo:
收稿日期:2019-03-30。
基金项目:国家自然科学基金青年基金资助项目(21707011); 江苏省自然科学基金青年基金资助项目(BK20170289); 江苏省教育厅自然科学基金项目(17KJB610001)。
作者简介:毛林强(1989—),男,山东潍坊人,博士,讲师。E-mail: maolinqiang2008@126.com
更新日期/Last Update: 2019-09-30