无机盐工业
主管:中海油天津化工研究设计院有限公司
主办:中海油天津化工研究设计院有限公司
   中海油炼油化工科学研究院(北京)有限公司
   中国化工学会无机酸碱盐专业委员会
ISSN 1006-4990 CN 12-1069/TQ

无机盐工业 ›› 2022, Vol. 54 ›› Issue (9): 119-125.doi: 10.19964/j.issn.1006-4990.2021-0750

• 环境·健康·安全 • 上一篇    下一篇

响应曲面法优化污泥/粉煤灰复合陶粒滤料的制备

方伟成(),程星星,孙常荣   

  1. 东莞城市学院城建与环境学院,广东 东莞 523419
  • 收稿日期:2021-12-14 出版日期:2022-09-10 发布日期:2022-09-22
  • 作者简介:方伟成(1981— ),男,硕士,副教授,主要研究方向为水污染治理与修复、固体废弃物资源化利用;E-mail:longbamboopk@163.com
  • 基金资助:
    2020年东莞市社会科技发展项目(2020507151153);2020年校级重大科研培育项目(2020YZD001Z);2019年广东省本科高校教学质量与教学改革工程建设项目(实验教学示范中心NO30)

Optimization of preparation of sludge/fly ash composite ceramsite filler materials by response surface methodology

FANG Weicheng(),CHENG Xingxing,SUN Changrong   

  1. Dongguan City College,College of Urban Construction and Environment,Dongguan 523419,China
  • Received:2021-12-14 Published:2022-09-10 Online:2022-09-22

摘要:

以污泥、粉煤灰和废玻璃为原料,辅以硅酸钠作为黏结剂,烧制复合陶粒滤料。在单因素实验基础上,利用Box-Behnken响应曲面法优化,考察了预热温度、烧结温度、烧结时间等因素及其相互作用对复合陶粒滤料性能的影响。研究结果表明,响应曲面建立的数学模型拟合度较高,预热温度、烧结温度和烧结时间3个因素之间的交互作用对复合陶粒滤料吸水率均有显著影响,烧结时间是最主要的因素。在污泥、粉煤灰、废玻璃的质量比为4∶3∶3,辅以3%(以质量分数计)硅酸钠黏结剂,预热温度为500 ℃,预热时间为20 min,烧结温度为1 133 ℃,烧结时间为23 min条件下,可制备出满足CJ/T 299—2008《水处理用人工陶粒滤料》要求的陶粒滤料。与其他陶粒对比,污泥/粉煤灰复合陶粒滤料具有低表观密度和高吸水率等优点,适宜作为水处理滤料及人工湿地填料。

关键词: 响应曲面法, 复合陶粒滤料, 吸水率, 颗粒表观密度

Abstract:

The ceramsite filter media was fired by sludge,fly ash and waste glass as raw materials and supplemented with sodium silicate as binder.Based on single?factor experiment,the effect of preheating temperature,sintering temperature,sintering time and their interaction on the performance of composite ceramsite filter materials were investigated by using optimization with Box-Behnken response surface method.The results showed that the mathematical model established by the response surface had a high degree of fit.The interaction among the three factors of preheating temperature,sintering temperature and sintering time had significant effect on the water absorption rate.Sintering time was the most important affecting factor.Under the condition that the mass ratio of sludge,fly ash and waste glass was 4∶3∶3,supplemented by 3%(by mass fraction) binder,the preheating temperature was 500 ℃,the preheating time was 20 min,the sintering temperature was 1 133 ℃,and the sintering time was 23 min,the ceramsite filter material that met the requirements of CJ/T 299—2008 “artificial ceramsite filter material for water treatment”could be prepared.Compared with other ceramsite,sludge or fly ash composite ceramsite filter material had the advantages of low density and high?water absorption rate,which was suitable for water treatment filter material and artificial wetland filler.

Key words: response surface methodology, ceramsite filler materials, water absorption rate, particle apparent density

中图分类号: