Pressure Sand Fillter

Features:

• Higher specific flow rate

• Maintenance free

• Rust proof finishing

Further Details:

The Multi-grade Sand Filter is a depth filter that makes use of coarse and fine media mixed together in a fixed proportion. This arrangement produces a filter bed with adequate pore dimensions for retaining both large and small suspended particles.

This filter performs at a substantially higher specific flow rate than conventional filters. Specific flow rates of 15-30m/h have been successfully obtained for treating water containing 50-25ppm suspended solids respectively to produce a filtrate with less than 5ppm.

Features

• Higher specific velocity.

• Raw water can be used for back washing the filter.

Advantages

• Higher specific flow rate than conventional down flow filters thereby saving on Space & cost.

• Very little maintenance required.

• Lower backwash water requirement.

• In most cases, raw water can be used for backwash.

Applications

• The Multi-grade sand filters filter is an ideal choice for all applications where a conventional sand filter is used.

• It is extensively used in side stream filtration of cooling water & in potable water treatment.

• It is ideal for filtration of clarified water.

• In addition it finds application in sea water filtration & in filtration of chemical solutions.

• For these types of filterations rubber lined or epoxy painted filters can be offered.

Specifications

• One vertical cylindrical Mild steel/FRP pressure vessels with dished ends. Mild Steel pressure vessel are painted internally with anti-corrosive bitumastic paint and externally with a protective coat of red oxide primer.

• One set of internal water distribution & collection system.

• One initial charge of filter sand & underbid material

• One set of frontal pipe work & valves.

• Two pressure gauges to monitor head loss across the filter.

• One orifice board (optional) for indicating wash water flow to be fitted in drain sump. Maximum / minimum operating pressure will be 3.5kg/cm2g & 2.0 kg/cm2g respectively.

• Multi-grade sand filters are available from 600 to 3000mn diameters.