MAINTENANCE AND FEATURES: Quartz sand filter uses one or several filter media, operates at room temperature, acid and alkali, oxidation, the PH scope is from 2 to13. Perfect protection device and monitoring instrumentation has a backwash function, dirt and other pollutants are quickly washed away, and water consumption function, can be set to automatic functions according to users’ requirements. Under certain pressure, the liquid goes through the touch flocculation of the media , to adsorpt, retent, remove the impurities, so as to achieve the purpose of filtering. Its interior packing is generally as follows: quartz sand, anthracite, granular porous ceramics, manganese sand, the user Its filter precision is between 0.005 and 0.01m, which can effectively remove colloid particles and organic polymer.