It is reported, the technology aimed at electronic components from factories and automobile factories such as efficiently in the waste water recycling extracting rare metals. Industrial wastewater often contains rare metal scraps, Japan established pharmaceutical ShangSen RenDan company using mature capsule production technology, developed the 2-3 cm in diam. Capsule. High concentrations of microbes will be loaded in the capsule into 1.9 meters long, 1.4 meters wide, 1.9 meters high device, and connected with the factory's wastewater treatment equipment. After is bubbled into water, microorganisms will absorb the rare metal capsule. Finally remove capsule combustion, can get rare metals recycling.