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Yu Zhenzhen, Wang Xiaochang, Funamizu Naoyuki, Li Qian. Effect of lime addition and mixing on pathogen inactivation in a composting toilet[J]. Chinese Journal of Environmental Engineering, 2014, 8(7): 2987-2990.
Citation: Yu Zhenzhen, Wang Xiaochang, Funamizu Naoyuki, Li Qian. Effect of lime addition and mixing on pathogen inactivation in a composting toilet[J]. Chinese Journal of Environmental Engineering, 2014, 8(7): 2987-2990.
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Effect of lime addition and mixing on pathogen inactivation in a composting toilet

  • 1.

    School of Environmental and Municipal Engineering, Xi'an University of Architecture and Technology, Xi'an 710055, China

  • 2.

    Department of Environmental Engineering, Hokkaido University, Sapporo 060-8628, Japan

  • Received Date: 09/07/2013
    Accepted Date: 17/06/2013
    Available Online: 26/06/2014
    Fund Project:
  • In order to improve the sanitary condition in rural area in developing countries,an experimental study was conducted on feces treatment using a simple composting toilet with lime addition and manual mixing.The objective was to find the optimal condition for reducing the pathogenic risk to the acceptable level.The Beta-Possion model was used for evaluating the health risk on exposure to the pathogens residual in the composting product.As a result,it is found that the acceptable infection risk of 3.2×10-5 can be achieved under the conditions of lime addition to 1.5% of the total dry weight of the compost,manual mixing for 50 times,and reaction time for 12 h.
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Effect of lime addition and mixing on pathogen inactivation in a composting toilet

  • Received Date: 09/07/2013
  • Accepted Date: 17/06/2013
  • Available Online: 26/06/2014
Fund Project:

Abstract: In order to improve the sanitary condition in rural area in developing countries,an experimental study was conducted on feces treatment using a simple composting toilet with lime addition and manual mixing.The objective was to find the optimal condition for reducing the pathogenic risk to the acceptable level.The Beta-Possion model was used for evaluating the health risk on exposure to the pathogens residual in the composting product.As a result,it is found that the acceptable infection risk of 3.2×10-5 can be achieved under the conditions of lime addition to 1.5% of the total dry weight of the compost,manual mixing for 50 times,and reaction time for 12 h.

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