The purpose of quartz sand filter media is to remove suspended matter from water to achieve lower turbidity, or to remove water from sludge to obtain lower moisture content. Rapid sand filters and slow sand filters are pools that use quartz sand, white coal, ore, and other granular filter media to rapidly filter tap water, achieving the purpose of retaining suspended solids and some bacteria, microorganisms, etc. in the water. The smokeless coal quartz sand filter media siphon filter is one type of rapid filter that replaces the inlet and outlet valves with a siphon tube. The outlets of the filter pools are interconnected, and backwashing water is supplied by other filter water. Each filter compartment operates under equal filtration speed and water level conditions. The smokeless coal quartz sand filter media valveless filter is a rapid filter without valves, where the water level of the outlet remains constant during operation, while the water level of the inlet continuously rises within the siphon tube as the head loss of the filter bed increases. When the water level rises to the top of the siphon tube and forms a siphon, the filter bed backwashing automatically begins, and the backwashing wastewater is discharged out of the pool through the siphon tube. The filter pool has a removable washing hood at the top, which sequentially washes each filter compartment as needed. It is composed of several small filter compartments and has the same inlet and outlet system. The smokeless coal quartz sand filter media coarse filter material (V-type filter) pool has water entering from V-shaped channels on both sides of the pool, with horizontal distribution holes at the bottom. The filtration and backwashing of this pool are already automated and is commonly used in large and medium-sized water plants. When used for tap water filtration treatment, the incoming suspended solids should be less than 15mg/l, and the outgoing suspended solids less than 3mg/l; when used for by-pass filtration treatment of circulating cooling water, the incoming suspended solids are generally 15-30mg/l, and the outgoing suspended solids generally less than 5mg/l; when used for "adding coagulant treatment," the incoming suspended solids are 50-100mg/l, and the outgoing suspended solids generally less than 5mg/l; the smokeless coal filter media is made from Shanxi **Xiangtan as raw material, processed through selected crushing, powdering, screening, and other processes, and is commonly used as double or triple-layer rapid filtration material.