The single contact oxidation process in the primary plan is rebuilt to the threestage contact oxidation process and the blow aeration in the primary plane is replaced by the underwater jet aeration.

Based upon study of the gas flowrate changes of filler under various filling rates,submersion depth,microporous and single orifice aeration ways,different aeration density and other conditions the hydraulics characteristics of HSL aerobic biological fluidized bed is studied,which provide good references for optimization design of HSL aerobic biological fluidized bed and similar reactors.

As a result,this paper recommends the integrated constructed terrace wetland because it can make good use of drop aeration,and the wetland covers less land and needs lower cost on running and managing than wastewater plant.

The experiments of ultrafiltration of Taihu Lake water with combination of sand filter and water-dropping aeration biological contact oxidation were evaluated.

The pre-treatment of micro-polluted source water with three-stage water-dropping aeration biological contact oxidation was studied.

The experiments of pre-treatment of micro-polluted source water with three water-dropping aeration biological contact oxidation were performed.

Test was completed to analyze the improvement of water quality in Fenhe River Reservoir by water lifting and aeration facility.