This in-tank slow sand filter can be constructed easily in low-cost with local materials and is simple in use and maintenance.

The slow biological filter technology was determined for drinking water treatment according to the characteristics such as great difference between high and low terrain,serious seasonal shortage of water,low per capita income,relatively decentralized population distribution and main water sources being springs,natural rainfall and water pond in the counties located in Three Gorges Reservoir area.

Study and application of slow filter for fungi removal

Effects of biofilter media and operating parameters on biofiltration of odor from chicken manure composting;

Effect of odor removal by immobilized engineering bacteria biofilter;

Review on Treatment of Benzene Compounds by Biofilter;

An approach to purification of toluene waste gas by a cross-flow bio-trickling filter;

Study on removal rate of methyl mercaptan and ethanethiol by bio-trickling filter;

In this paper,the study about biotrickling filter(BTF) till now was introduced,including mechanisms,the effect factor of treatment and present research among domestic and foreign.

The method of biotrickling filter for treating low concentration hydrogen sulfide gas is investigated.

Odor gas removal from biological waste decomposition machine using a biotriclding filter was studied,with investigation of the start-up of biotrickling filter.