关键词: 有机固体废物, 好氧处理, 活性氧, 酶活性, 抑制作用

Abstract: The produced organic solid waste is increasing rapidly in recent years, and its treatment and disposal have attracted much attention. When aerobic technology is employed to treat the organic solid waste, the substrate of the feedstock is degraded very quickly at thermophilic temperature; however, aerobic biological system tends to be inhibited by many factors such as material composition, metabolic intermediate, or external environmental condition, and then the process may be adversely affected to some degree. This paper reviewed those inhibition factors such as ammonia nitrogen and digestion temperature which may significantly affect aerobic biological process of organic solid waste. Based on the variations of enzyme (such as protease and oxidase) activity and the transformation of metabolic products, the inhibition mechanisms under adversity conditions were proposed as following: acid-base imbalance in microorganisms, protein denaturation, excessive oxidation of intracellular substances. After the comparison of enhanced biological treatment, inoculating functional microorganisms and adding exogenous reagents were suggested to alleviate the inhibition of aerobic process. In the end, this paper put forward the research directions to enhance aerobic performance of organic solid waste.

Key words: organic solid wastes, aerobic treatment, reactive oxygen species, enzyme activity, inhibition