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.

• 通过在锰砂及石英砂上固定自行分离的纤发菌属细菌,研究了生物固定化锰砂及石英砂滤柱的除铁除锰能力。