In order to know about the surplus amount lever of prestressed concrete continuous box girders in our country at present and provide the reference for calculation and test of structure,based on the field survey,a study is made of the concrete surplus amount of the two prestressed concrete continuous box girders which are the background project.

Study on the treatment of tanning synthetic wastewater by coagulation-flocculation;

The process to treat wastewater of a tan works was improved based on analysis of its characteristics by method of coagulate-biological contact oxidizing.

The best pH value for complex coagulate of PAM+ and PAC was 7.

The treatment of coagulate-microelectrolysis- aerobic-biocharcoal on pesticide wastewater fluorin- containing was researched in this paper.

Pretreating of wastewater from vitamin B_1 production by coagulation - micro-electrolysis process;

Simulation test on pretreating landfill leachate with coagulation and flotation;

Study on the coagulation treatment of activated dye wastewater;

Treatment of printing and dyeing wastewater by polysilicate coagulant;

Anti-interference capability of streaming current automatic coagulant dosage control system;

The effects of coagulant dosage, aeration capacity and different filter time on system and effluent water quality of system were studied.

Removal of acid red B from solutions by flocculation with dicyandiamide-formaldehyde condensation product;

The application of the integrated technology of flocculation combined with precoating filtration in wastewater reuse;

Pilot study on intensive treatment of landfill leachate by flocculation-Fenton-biological aerated filter process;