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化学法调理生化污泥脱水效果研究

石万里 张大鹏 赵泽华 张成 耿新祥 马文滢

石万里, 张大鹏, 赵泽华, 张成, 耿新祥, 马文滢. 化学法调理生化污泥脱水效果研究[J]. 环境工程技术学报, 2020, 10(2): 273-279. doi: 10.12153/j.issn.1674-991X.20190114
引用本文: 石万里, 张大鹏, 赵泽华, 张成, 耿新祥, 马文滢. 化学法调理生化污泥脱水效果研究[J]. 环境工程技术学报, 2020, 10(2): 273-279. doi: 10.12153/j.issn.1674-991X.20190114
SHI Wanli, ZHANG Dapeng, ZHAO Zehua, ZHANG Cheng, GENG Xinxiang, MA Wenying. Study on the effect of chemical conditioning method on the dewatering effect of biochemical sludge[J]. Journal of Environmental Engineering Technology, 2020, 10(2): 273-279. doi: 10.12153/j.issn.1674-991X.20190114
Citation: SHI Wanli, ZHANG Dapeng, ZHAO Zehua, ZHANG Cheng, GENG Xinxiang, MA Wenying. Study on the effect of chemical conditioning method on the dewatering effect of biochemical sludge[J]. Journal of Environmental Engineering Technology, 2020, 10(2): 273-279. doi: 10.12153/j.issn.1674-991X.20190114

化学法调理生化污泥脱水效果研究

doi: 10.12153/j.issn.1674-991X.20190114
详细信息
    作者简介:

    石万里(1990—),男,工程师,硕士,主要从事城镇给排水与污水治理研究,shi_wl@ecidi.com

    通讯作者:

    马文滢 E-mail: ma_wy@ecidi.com

  • 中图分类号: X703

Study on the effect of chemical conditioning method on the dewatering effect of biochemical sludge

More Information
    Corresponding author: Wenying MA E-mail: ma_wy@ecidi.com
  • 摘要: 针对城市污水处理厂的生化污泥含水量较高不利于后续处理的问题,采用次氯酸钠氧化法、芬顿(Fenton)氧化法及Fenton+氧化钙(CaO)联合法,通过单因素分析法优化工艺条件,对污泥进行脱水处理试验研究。结果表明:在优化工艺条件下,使用次氯酸钠对生化污泥进行氧化后,污泥含水率可由89.90%降至78.44%,产生滤液的质量约为污泥质量的50%;在Fenton氧化体系中,污泥的含水率可由89.90%降至65.32%,产生滤液的质量约为污泥质量的60%;而在使用Fenton+CaO联合法调理后,污泥的含水率可降至51.06%,产生滤液的质量约为污泥质量的56%。在Fenton氧化体系中加入CaO促进了铁离子的水解,氢氧化铁-硫酸钙与过量的硫酸钙结晶析出晶体,构成的刚性骨架在污泥中形成大量透水通道,提高生化污水的脱水性能。综合考虑污泥脱水效果和药剂成本,确定污泥脱水的最佳调理方法为Fenton+CaO联合法。

     

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  • 收稿日期:  2019-07-01
  • 刊出日期:  2020-03-20

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