Water Environ Res. 2018 Sep 1;90(9):835-839. doi: 10.2175/106143017X15131012153031. Epub 2018 Apr 4.
The codigestion of different wastes is a promising concept to improve methane generation during anaerobic processes. However, the anaerobic codigestion of catering waste leachate with algal biomass and sewage sludge has not been studied to date. The present study investigated methane generation by the anaerobic codigestion of different mixtures of catering waste leachate, microalgal biomass, and sewage sludge. Codigestion of waste mixture containing equal ratios of three substrates had 39.31% higher methane yield than anaerobic digestion of raw sludge. This was possibly because of a proliferation of methanogens during the codigestion period, induced by multiphase digestion of different wastes with different degrees of digestibility. Therefore, codigestion of catering waste leachate, microalgal biomass, and sewage sludge appears to be an efficient technology for energy conversion from waste resources. The scientific application of this codigestion technology with these three substrates may play a role in solving important environmental issues of waste management.
不同废物的共消化是提高厌氧过程中甲烷生成的有前途的概念。然而，餐饮废物渗滤液与藻类生物质和污水污泥的厌氧共消化尚未得到研究。本研究调查了不同比例的餐饮废物渗滤液、微藻生物质和污水污泥的厌氧共消化产生的甲烷。含有三种底物等比例的废物混合物的共消化比原始污泥的厌氧消化产生的甲烷产量高 39.31%。这可能是因为在共消化期间，由于不同可消化程度的多种废物的多相消化，产甲烷菌大量繁殖。因此，餐饮废物渗滤液、微藻生物质和污水污泥的共消化似乎是一种从废物资源中转化能源的有效技术。该共消化技术与这三种底物的科学应用可能在解决废物管理的重要环境问题方面发挥作用。
