What are the standards and applications of quartz sand as a filter material ?
What are the standards and applications of quartz sand as a filter material?
Quartz sand has been used as an industrial raw material for a long time, and it is also indispensable for the application of polyacrylamide, polyaluminum chloride and other products in the water purification industry.
The application of quartz sand as a filter material is combined with a filter container to intercept particulate impurities such as suspended solids in water, thereby functioning as a filter.
Quartz sand filter materials can be mainly divided into the following categories:
1. Ordinary quartz sand filter material: mainly used in sewage treatment, no problem in three or five years, as long as it prevents the loss of quartz sand, it does not matter if it is polluted, because the sewage can be aerobic or anaerobic in sewage treatment. , the pollutants in the sewage are degraded.
2. Refined quartz sand filter material: used in pure water treatment, in the sand filter, generally 2 to 3 years to be replaced, usually contaminated, contaminants wrapped in quartz sand can not play a good filtering effect. Can only be replaced. Quartz sand filter material is certified by Iso9001-2000 quality system. Refined quartz sand is stable in acidic water with neutral and value range, but it is slightly soluble in alkaline water. The increase of SiO2 in chemical water treatment does not exceed 2mg/L. Common specifications for quartz sand filter: 0.5-1.0mm 0.6-1.2mm 0.8-1.6mm 1.0-2.0mm 2.0-4.0mm 4.0-8.0mm 8.0-16mm 16-32m