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流体剪切与超声空化破解剩余污泥的参数优化

谢元华 相阳 梁启煜 李现瑾 韩进 由美雁 朱彤

谢元华, 相阳, 梁启煜, 李现瑾, 韩进, 由美雁, 朱彤. 流体剪切与超声空化破解剩余污泥的参数优化[J]. 环境科学研究, 2017, 30(11): 1777-1782. doi: 10.13198/j.issn.1001-6929.2017.03.20
引用本文: 谢元华, 相阳, 梁启煜, 李现瑾, 韩进, 由美雁, 朱彤. 流体剪切与超声空化破解剩余污泥的参数优化[J]. 环境科学研究, 2017, 30(11): 1777-1782. doi: 10.13198/j.issn.1001-6929.2017.03.20
XIE Yuanhua, XIANG Yang, LIANG Qiyu, LI Xianjin, HAN Jin, YOU Meiyan, ZHU Tong. Parameter Optimization in Excess Sludge Disintegration by Fluid Shear and Ultrasonic Cavitation[J]. Research of Environmental Sciences, 2017, 30(11): 1777-1782. doi: 10.13198/j.issn.1001-6929.2017.03.20
Citation: XIE Yuanhua, XIANG Yang, LIANG Qiyu, LI Xianjin, HAN Jin, YOU Meiyan, ZHU Tong. Parameter Optimization in Excess Sludge Disintegration by Fluid Shear and Ultrasonic Cavitation[J]. Research of Environmental Sciences, 2017, 30(11): 1777-1782. doi: 10.13198/j.issn.1001-6929.2017.03.20

流体剪切与超声空化破解剩余污泥的参数优化

doi: 10.13198/j.issn.1001-6929.2017.03.20
基金项目: 

国家自然科学基金项目 51178089

教育部中央高校基本科研业务费项目 N150304001

教育部中央高校基本科研业务费项目 N140306001

详细信息
    作者简介:

    谢元华(1979-), 男(土家族), 湖南张家界人, 副教授, 博士, 主要从事污水污泥处理与环境机械研究, yhxie@mail.neu.edu.cn

    通讯作者:

    朱彤(1963-), 男, 陕西白水人, 教授, 博士, 博导, 主要从事污水污泥处理与环境机械研究, tongzhu@mail.neu.edu.cn

  • 中图分类号: X703;X705

Parameter Optimization in Excess Sludge Disintegration by Fluid Shear and Ultrasonic Cavitation

Funds: 

 51178089

 N150304001

 N140306001

  • 摘要: 为提高剩余污泥的破解效果并降低能耗,采用FS(fluid shear,流体剪切)、UC(ultrasonic cavitation,超声空化)、FS和UC联合工艺(FS-UC,UC-FS)破解剩余污泥,并应用单因素试验结合响应面法对联合工艺进行优化.结果表明:FS对剩余污泥破解效果一般,只在开始阶段具有较好效果,随作用时间延长,破解效果未有显著提高甚至下降.UC对剩余污泥破解效果明显,随作用时间延长,破解效果显著提升,但能耗也随之增大,EDR(energy disintegration ratio,效能比)明显下降.相同作用时间下,UC破解效果优于FS破解效果,UC破解剩余污泥的DDCOD(degree of disintegration,破解率)与EDR均明显高于FS方法.单因素试验得出的较优FS作用时间范围为2~8 min,较优UC作用时间范围为5~15 min.响应面法试验结果显示,联合工艺的剩余污泥破解效果和能量利用率均优于单一方法,联合工艺中FS-UC工艺的破解效果优于UC-FS工艺.FS-UC工艺的最佳参数:FS处理5.6 min再UC处理15.0 min,该条件下剩余污泥实际DDCOD为50.8%,EDR为26.8%.UC-FS工艺的最佳参数:先UC作用15.0 min再FS作用7.8 min,该条件下剩余污泥实际DDCOD为36.5%,EDR为17.1%.研究显示,以DDCOD和EDR为指标,4种工艺的高效性顺序为FS-UC > UC-FS > UC > FS,其中FS-UC工艺具有能耗低、破解效率高的特点,是4种工艺中剩余污泥破解效果最好的一种工艺.

     

  • 图  1  FS、UC破解剩余污泥的DDCOD与EDR

    Figure  1.  DDCOD and EDR of excess sludge disintegration by FS and UC

    图  2  FS时间和UC时间对DDCOD的交互影响

    Figure  2.  Interactive effects of FS time and UC time on DDCOD

    图  3  UC时间和FS时间对DDCOD的交互影响

    Figure  3.  Interactive effects of UC time and FS time on DDCOD

    图  4  4种工艺破解剩余污泥的DDCOD与EDR

    Figure  4.  DDCOD and EDR of excess sludge disintegration by 4 processes

    表  1  试验因素水平表

    Table  1.   Factors and levels of response surface experiment

    工艺 项目 代码 下水平 上水平 -α +α
    FS-UC FS时间/min A 2 8 0.757 3 9.242 6
    UC时间/min B 5 15 2.928 9 17.071 1
    UC-FS UC时间/min C 5 15 2.928 9 17.071 1
    FS时间/min D 2 8 0.757 3 9.242 6
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出版历程
  • 收稿日期:  2016-12-31
  • 修回日期:  2017-07-27
  • 刊出日期:  2017-11-25

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