Screening and Pre-treatment Equipment

Screening and pre-treatment equipment is the first line of defense for stable operation of a water treatment system. Floating debris, fibers, hair, and grit that are not removed from the influent in time can block pumps, tangle in piping, wear down equipment, and add load to every later treatment stage.

Longdai supplies screening and pretreatment equipment ranging from coarse and fine screens and solid-liquid separators to grit settling and grit-water treatment units. Rake bar screens intercept larger floating debris, mesh plate screens filter fine fibrous material, and mobile grit suction units remove settled grit. Bar spacing, aperture size, equipment width, installation angle, and automatic control mode are configured to project conditions.

The screening and pretreatment equipment serves municipal wastewater treatment plants, pumping stations, drinking water treatment plants, and industrial wastewater projects in food processing, papermaking, textile dyeing, brewing, slaughterhouses, etc. Equipment combinations are selected to match actual influent conditions.