2008 Volume 2 Issue 9
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Xu Zhongjun, Cheng Zufen, Lin Aijun, Wang Jinggang, Tong Hua. Removal of formaldehyde from wastewater by activated sludge[J]. Chinese Journal of Environmental Engineering, 2008, 2(9): 1173-1176.
Citation: Xu Zhongjun, Cheng Zufen, Lin Aijun, Wang Jinggang, Tong Hua. Removal of formaldehyde from wastewater by activated sludge[J]. Chinese Journal of Environmental Engineering, 2008, 2(9): 1173-1176.
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Removal of formaldehyde from wastewater by activated sludge

  • 1.

    Department of Environmental Science and Engineering, Beijing University of Chemical Technology, Beijing 100029)

  • Received Date: 19/05/2008
    Accepted Date: 05/05/2008
    Fund Project:
  • It is an economical way that the formaldehyde in low concentration is removed from wastewater by microorganism. In this study, a sequencing batch reactor (SBR) was employed to investigate effects of aerating time, influent formaldehyde concentration, influent water pH and water temperature on the removal of formaldehyde in low concentration from wastewater by microorganism. The results showed that the removal rate of formaldehyde by activated sludge increased with aerating time. Both formaldehyde load rate by activated sludge and formaldehyde degradation rate by microorganism increased with elevated influent formaldehyde concentration, while formaldehyde removal rate decreased within the influent formaldehyde concentration range from 40 to 120 mg/L. Formaldehyde degradation efficiency by activated sludge was higher in the water of pH 5～7. Formaldehyde removal rate increased and formaldehyde degradation rate increased taking the form of an exponential function with elevated water temperature within the water temperature range from 15℃to 35℃.
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  • 1. 

    沈阳化工大学材料科学与工程学院 沈阳 110142

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Removal of formaldehyde from wastewater by activated sludge

  • Received Date: 19/05/2008
  • Accepted Date: 05/05/2008
Fund Project:

Abstract: It is an economical way that the formaldehyde in low concentration is removed from wastewater by microorganism. In this study, a sequencing batch reactor (SBR) was employed to investigate effects of aerating time, influent formaldehyde concentration, influent water pH and water temperature on the removal of formaldehyde in low concentration from wastewater by microorganism. The results showed that the removal rate of formaldehyde by activated sludge increased with aerating time. Both formaldehyde load rate by activated sludge and formaldehyde degradation rate by microorganism increased with elevated influent formaldehyde concentration, while formaldehyde removal rate decreased within the influent formaldehyde concentration range from 40 to 120 mg/L. Formaldehyde degradation efficiency by activated sludge was higher in the water of pH 5～7. Formaldehyde removal rate increased and formaldehyde degradation rate increased taking the form of an exponential function with elevated water temperature within the water temperature range from 15℃to 35℃.

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