ABSTRACT

Mixtures of fats, oils and grease (FOG) either with dairy manure or with thickened waste secondary sludge (TWSS) were treated using microwave enhanced advanced oxidation process (MW-AOP). For both dairy manure and TWSS mixtures, the maximum increase in soluble COD (SCOD) resulted from the 1:1 mixture by total solids (TS) weight. In the TWSS mixtures, production of volatile fatty acid (VFA) increased with greater FOG content, while there was a decreasing production trend in VFA in dairy manure mixtures. Nutrients and metals were also released for all sets. The degradation followed peroxidation mechanism to produce lower molecular weight substrates such as short-chain fatty acids which would be less inhibitory to microbes. Nutrients and metals in the treated solution would sustain microbial growth in a biological system. FOG content for the mixtures in the MW-AOP treatment should be less than 75% by TS weight to prevent oxidation to CO₂.

摘要

使用微波增强高级氧化工艺 (MW-AOP) 处理脂肪、油和油脂 (FOG) 与乳制品粪便或浓缩废二次污泥 (TWSS) 的混合物。对于乳制品粪便和 TWSS 混合物，可溶性 COD (SCOD) 的最大增加来自按总固体 (TS) 重量 1:1 的混合物。在 TWSS 混合物中，挥发性脂肪酸 (VFA) 的产量随着 FOG 含量的增加而增加，而乳粪混合物中 VFA 的产量呈下降趋势。所有系列都发布了营养物质和金属元素。降解遵循过氧化机制以产生较低分子量的底物，例如对微生物的抑制作用较小的短链脂肪酸。处理过的溶液中的营养物质和金属会维持生物系统中微生物的生长。₂ .