Water Environ Res. 2014 Mar;86(3):210-22. doi: 10.2175/106143013x13736496909635.
Thickened waste-activated sludge (TWAS) was subjected to microwave pretreatment and athermal irradiation. The soluble phase of each type of TWAS pretreatment was subject to ultrafiltration in series using progressively smaller pore-size membranes (300, 100, 10, and 1 kDa) and biodegradability tests. Microwave pretreatment solubilizes a considerable amount of the suspended organic substrate, but athermal irradiation also causes solubilization of organic matter, although at a smaller scale than microwave. Proteins are particularly sensitive to athermal irradiation, and both microwave and athermal irradiation are capable of changing the size distribution of dissolved organic matter. Athermal irradiation and microwave have a substantially different effect on thermophilic anaerobic biodegradability of the various size fractions obtained after ultrafiltration. Slight inhibition and decrease in total biogas production was measured in some microwave tests. Athermal irradiation does not cause a decrease in maximum biogas production rate in any test and increases slightly biogas production.
厚层剩余污泥（TWAS）经微波预处理和非热辐照处理。每种类型的 TWAS 预处理的可溶相均采用逐渐减小孔径的膜（300、100、10 和 1 kDa）进行串联超滤，并进行生物降解性测试。微波预处理可溶解大量悬浮有机底物，但非热辐照也会导致有机物的溶解，尽管其规模小于微波。蛋白质对非热辐照特别敏感，微波和非热辐照都能够改变溶解有机物的大小分布。非热辐照和微波对超滤后获得的各种大小级分的嗜热厌氧生物降解性有显著不同的影响。在一些微波试验中，测量到轻微的抑制和总沼气产量的减少。在任何试验中，非热辐照都不会导致最大沼气产生速率降低，反而会略微增加沼气产量。
