Hyper-Thermophilic Composting of Sewage Sludge and Ash Alkali Composting of Feces Provide Excellent Organic Fertilizers for Sustainable Agriculture

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The sanitation of sewage sludge and human feces is a fundamental challenge. The hyper-thermophilic composting method for sewage sludge and ash alkali compositing method for feces are introduced in this paper. To understand the rationale of both methods, the microbial ecology of the human intestine and plant rhizosphere was reviewed. The article provides a review of bacteria in nature and the health benefits of probiotic bacteria. It covers the bacterial diversity of sewage and the process units of the sewage treatment plant. The diversities of hyper-thermophilic compost and ash alkali compost (humanure) were compared and found to be similar to the diversity of root-associated bacteria that promote plant growth and protect plants from attacks by bacteria, fungi, and nematodes. In summary, both composting methods can produce beneficial bacteria for agriculture, which support probiotic environmental agriculture.

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  • Sanitation Value Chain

    Sanitation Value Chain 5 (2), 3-26, 2021

    総合地球環境学研究所 サニテーションプロジェクト

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