Chlorinated hydrocarbons in Second Songhua River are of diverse structure and multiple kinds. Most of them are characterized by high toxicity, reluctant degradation, and easy bioaccumulation and can do damage to other living things including mankind through bio-magnification. To remedy environmental pollution by this kind of pollutants in order to decrease risk and to prevent them from going into environment with man-made wastes are the main tasks for polluted water bodies control and prevention. Micr...