2009 Volume 3 Issue 11
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Luo Wei, Chen Tongbin, Yue Bo, Zheng Guodi, Huang Qifei, Gao Ding. Study on rapid determination of moisture content in sewage sludge by microwave oven[J]. Chinese Journal of Environmental Engineering, 2009, 3(11): 2057-2060.
Citation: Luo Wei, Chen Tongbin, Yue Bo, Zheng Guodi, Huang Qifei, Gao Ding. Study on rapid determination of moisture content in sewage sludge by microwave oven[J]. Chinese Journal of Environmental Engineering, 2009, 3(11): 2057-2060.
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Study on rapid determination of moisture content in sewage sludge by microwave oven

  • 1.

    State Key Laboratory of Urban and Regional Ecology，Research Centre for EeoEnvironmental Sciences，Chinese Academy of Sciences，Beijing 100085，China

  • 2.

    Laboratory of Environmental Remediation, Institute of Geographic Sciences and Natural Resources Research, Chinese Academy of Sciences, Beijing 100101，China

  • 3.

    Chinese Research Academy of Environmental Sciences, Beijing 100012,China

  • Received Date: 01/12/2008
    Accepted Date: 06/11/2008
    Fund Project:
  • It is indicated with loss rate of weight, remaining moisture content and volatile solid content of sewage sludge dried by microwave oven with rated voltage of 220 V, frequency of 2 450 MHz, output power of 800 W, that microwave oven can be conveniently used to rapidly determinate the moisture content of sewage sludge. To improve the veracity of the moisture content measured by the oven, the weight of a sample should be reduced and irradiated repeatedly with short period of time. The irradiation time should be shortened little by little according to the change of the weight loss between two consecutive irradiations. The irradiation process, during which the volatile solids can not be released suddenly in great amount, should be stopped as soon as the weight of sample is constant.
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Study on rapid determination of moisture content in sewage sludge by microwave oven

  • Received Date: 01/12/2008
  • Accepted Date: 06/11/2008
Fund Project:

Abstract: It is indicated with loss rate of weight, remaining moisture content and volatile solid content of sewage sludge dried by microwave oven with rated voltage of 220 V, frequency of 2 450 MHz, output power of 800 W, that microwave oven can be conveniently used to rapidly determinate the moisture content of sewage sludge. To improve the veracity of the moisture content measured by the oven, the weight of a sample should be reduced and irradiated repeatedly with short period of time. The irradiation time should be shortened little by little according to the change of the weight loss between two consecutive irradiations. The irradiation process, during which the volatile solids can not be released suddenly in great amount, should be stopped as soon as the weight of sample is constant.

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