In the complex system of MeSO4, the removal of Ca2+ and Mg2+ by fluorination precipitation and double salt precipitation deep purification process was studied by single factor method.

A deep purification method, in which wet and dry (twice step)desulfurization are used in combination, is described.

According to the demand to environment protection currently, Making deep purification test on the slurry water in Wangfenggang Coal Cleaning Plant, then conducting further the commercial test of this plant by lab test in order to control the discharge of sewage.

Feasibility study of wetland system in advanced treatment of wastewater in the northern region of China

The outlet water from corrosive pipe resulted in some parameters of drinking water out of the standard,so the advanced treatment technology was studied.

Study on advanced water treatment by ultraviolet-ozone combined technology;

Immobilization biological activated carbon(IBAC) has a high capacity for the advanced purification to the water from Baiguishan Water Plant: the removal rate of COD_ Mn is about 40%, the removal rate of NH_3-N is above 97%, and the removal rates of the turbidity、bacteria and the total coliform flock are also high.

The technical methods for urban ecological river construction are proposed,and the advanced purification of the secondarily-treated WWTP effluent in a full-scale demonstration project is studied.