Pretreatment System

Multigrade Sand Filter

Multigrade sand filter is used to remove the suspended particle from raw water. The raw water flows vertically through the bed of the Sand or gravels and the Sand layer traps this suspended particle. If the pressure across the sand filter increases beyond the specified limit , backwash of the Sand filter is to be done. Sand filters are available in two option, Manual operation and Automatic operation

Softener

The raw water contains the salt of Calcium and Magnesium, which causes the scaling of the RO membrane. Thus, Softener are used to remove the Calcium and Magnesium ions. Softener are ion exchanger that are designed to remove the Calcium and Magnesium ions. Automatic as well as Manual operation units are available

Ultrafiltration

Ultrafiltration is a process in which the water is forced through the semipermeable membrane. High molecular weight and suspended solids are retained, while the low molecule weight solute and water passes through the membrane in the permeate. The UF system is backwash and operated automatically.