The dissolved oxygen had greater effects on heterotrophic bacteria,ammonifying bacteria and nitrifying bacteria.

对异养细菌、氨化细菌、硝化细菌有较大影响。

Bio - degradation role of aerobiotic organic substance and relationships between biological degradation and dissolved oxygen were stated, which provided theoretical basis for waste water reatment.

本文论述了需有机物的生物降作用以及与平衡的关系,从而为污水治理提供理论依据。