Department of Biology, Hong Kong Baptist University, Kowloon Tong, Hong Kong.
Department of Biology, Hong Kong Baptist University, Kowloon Tong, Hong Kong; Sino-Forest Applied Research Centre for Pearl River Delta Environment, Hong Kong Baptist University, Kowloon Tong, Hong Kong.
Bioresour Technol. 2019 Oct;289:121698. doi: 10.1016/j.biortech.2019.121698. Epub 2019 Jun 25.
This work proposes a new treatment approach involving both food waste disposal and sewerage treatment called MOWFAST i.e. Municipal Organic Waste management by combined Food waste disposal and Sewerage Treatment. MOWFAST involves mixing of food waste directly with raw sewage instead of separate addition to sludge and their combined anaerobic digestion (AD). Compared to conventional sludge digestion, MOWFAST exhibited better digestion capability and allowed a greater degradation of organic material along with higher production of methanogenic-favourable products from the beginning of digestion. This resulted in producing higher specific methane yields (7.86 LCH/kg VS versus 0.95 LCH/kg VS) and 1.4-fold higher cumulative methane yield over sludge AD. Furthermore, compared with conventional food waste-sludge co-digestion, MOWFAST gave higher solubilization of organic material (0.82 g sCOD/g VS versus 0.23 g sCOD/g VS) and specific methane yields (7.86 LCH/kg VS versus 3.2 LCH/kg VS). This proves its feasibility for digestion and methane generation potential.
本研究提出了一种新的处理方法，即 MOWFAST，即通过结合食物垃圾处理和污水（sewage）处理进行城市有机废物管理，同时处理食物垃圾和污水。MOWFAST 涉及直接将食物垃圾与原污水混合，而不是单独添加到污泥中，然后进行联合厌氧消化（anaerobic digestion）。与传统的污泥消化相比，MOWFAST 表现出更好的消化能力，允许从消化开始时就有更多的有机物质降解，并且产生更多有利于产甲烷菌的产物。这导致产生更高的特定甲烷产量（7.86 LCH/kg VS 比 0.95 LCH/kg VS）和 1.4 倍的累积甲烷产量超过污泥 AD。此外，与传统的食物垃圾-污泥共消化相比，MOWFAST 使有机物质的溶解率更高（0.82 g sCOD/g VS 比 0.23 g sCOD/g VS）和特定甲烷产量更高（7.86 LCH/kg VS 比 3.2 LCH/kg VS）。这证明了其用于消化和产生甲烷的潜力。
