... river,well,ground,sea water. RO water treatment system / machine Technology instruction 1, current advanced RO system , the output water no kernel,pure ... %,recovery 50%-75%,and shapes the special character. The whole system can get rid of bacterial virus , heavy metallic irons. ... kgQuartz sand filter:1500 kgFunctions:RO membrane auto wash and manual wash Pure water height water level auto stop,low water ...