The design,commissioning and operation of engineering for treatment of high salinity wastewater from aquatic product processing factory by air flotation-A/O-coagulation and sedimentation-D-type filter process are introduced.

Application of coagulation-CAF air flotation-V filter process to the treatment and reuse of wastewater from steel works;

A pre-sedimentation-aerated flotation-V filter process has been adopted in Taizhou Thermal Power Plant wastewater treatment and reuse engineering project,and the effluent has been used as make-up water to its circulating cooling system.

Performance comparison of conventional rapid filter with V-filter;

Design of V-filter Backwash Control System in Water Plant

Design of inlet system in V-type filter;

Uneven air distribution and other problems existing in the water distribution system of the original V-type filter with ceramic tiles were analyzed.

In Fuzhou Xiqu Water Works, the original double-valve filter was reconstructed into V-type filter.

Through experiments and research on the optimization of V-type filtration pool materials and selection of backwashing parameters,we finally find a type of uniform filtrating media that is most suitable for water treatment in South China and make the turbidities of treated water less than 0.

1 NTU was found through comparing experiments and research on 6 types common materials of V-type filtration pool.