活性污泥系统中酶研究进展

细菌和原生动物在污水处理中的作用与各自的酶活性密切相关。细菌对有机质进行分解,而原生动物对污水及细菌进行澄清,活性污泥酶活性高则出水水质较好。污水中毒性物质(如重金属)对活性污泥酶活性有抑制作用,原因是重金属离子能和酶中的巯基(—SH)结合。

A Review on the Researches of Enzyme in Activated Sludge System

Reviewed in this article are the current studies abroad on enzyme in raw domestic sewage, sludge of septic tank, activated sludge, the bacteria and protozoa that play significant role during sewage treatment, In the process of hydrolysis and decomposition of organic matter, the bacteria practically play the exclusive role, while the protozoa act on flocculation and oxidation in sludge. This article also describes the relationship of enzymatic activities in activated sludge and quality of effluent. Toxic matter such as heavy metals will inhibit enzymatic activities because heavy ions associate with mercapto-(-SH).