Quartz sand filter is also named pressure type filter which is an important part of the pure water preparation pretreatment and water purification system. It generally uses steel and pastern or stainless steel as material . It can be classified by its filter medium as multimedium filter, active carbon filter and manganese sand filter. It can be used singly or associated with other units . Mechanical filter has been widely used in the water supply in countries, towns and industries. The source water with feculent degree below 200 mg/l can be filtrated directly or deposited. Feculent degree of the processed water will less than or equal to 3 degree in accordance with the national drinking water standard. Quartz sand filter can be used as water supply equipment for small and medium scale corporations or be used as deionized water pretreatment device for light industry , chemistry industry, medical treatment, power plants. Reasonable design, easy operation make it one of the important equipments of water-treatment techniques.