中文摘要：

2005-2006年，对哈尔滨哈药总厂污水处理厂各处理池中的微型生物群落动态与水质净化效能之间的相互关系进行了研究。结果表明，在该处理系统中，共发现微型生物48种，其中出现量大的种类有有肋楯纤虫（Aspidisca costata）、小球藻（Cblorella rulgaris）和广缘小环藻（Cyclotella stelligera）；红眼旋轮虫（Philodina crythrophthalma）和懒轮虫（Rotaria tardigruda）也是经常出现在该水处理系统中的种类，但数量不多；采样点距排污口越远，水质则越有明显改善，微型生物群落的种类数目和群落密度明显增加，群落多样性指数也随之上升。实验证明，利用微型生物的群落组成和变化规律快速检测污水处理厂水质处理结果的方法切实可行。

英文摘要：

Biological monitoring calls more and more people＇s attention. The microbial plays a very important role in the water ecosystems＇structure and function. We can monitoring the water enviroment through handing the community composition and changement of the microbial in the water, in order to understand the water quality status of ecosystems. In this paper the relationship between the microbial community dynamics and the efficiency of water purification were studied by polyurethane foam unit method in a sewage treatment plant in Harbin from May of 2005 to April of 2006. During the investigation, 48 microorganist species were identified, of which Aspidisca costata, Chlorella sp. and Cyclotella stelligera were the most abundant forms. Rotifers often occur but in low abundance. The results show that species number and sensity of protozoan community, as well as the diversity index obviously increases with the extending of the distance between sampling sites and pollutant outlet due to the improvement of water quality. Experiment also confirmed that microbial community could be applicable for rapid monitoring of the variation of water quality in medicine-wastewater treatment system.