Study on development of technology on removal of iron and manganese from groundwater;

Effects of dissolved oxygen in water on the removal of iron and manganese by biofilter for groudwater with ammonia nitrogen

Study on backwashing of bio-filter bed of iron and manganese removal in steady running period;

Through immobilizing the isolated Leptothrix bacteria on manganese sand and quartz sand,the iron and manganese removal efficiency by the biologically immobilized filtration columns were studied.

Five strains of iron and manganese removal bacteria were obtained from the biological film,which fell-off from mature filter bed and were incubated into culture media containing iron and manganese by repeatedly domestication.

This paper analyzes the water quality cycling through iron and maganese elimination instruments in several plants in Heilongjiang Province,The filtering flowing speed can be improved to 15～25?m/h.

The anthracite used as filter material in water plant for biological removal of iron and manganese has been studied and practiced through production practices.