The process of anaerobic digestion consists of three steps. 厭氧消化包括三個步驟。
Biogas generated from the sludge digestion in wastewater treatment plants is a potential clean energy source, which can be recycled in several ways. 摘要城市污水處理廠中污泥厭氧消化產生的沼氣是一種很有潛力的清潔能源。
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