Quartz sand filtration equipment and activated carbon filtration equipment are widely used in filtration of various sewage treatments. They can effectively remove organic matter, color, solid particles, suspended solids and other impurities in sewage. Filling filter materials with different properties can achieve different processing purposes. It has the characteristics of large water treatment capacity, good filtration effect, compact structure, space saving, small footprint, simple operation, operation and maintenance. It is widely used in water treatment systems in sewage treatment stations, electronics, petroleum, chemical, pharmaceutical, food and other industrial production.