Multi Grade Filter
Pressure Sand Filter/Activated Carbon Filter/Iron Removal
The Pressure Sand Filter/Multigrade 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 – 30 M/Hr. have been successfully obtained for treating water containing 50-25ppm suspended solids respectively to produce a filtrate with less than 5ppm. The Multigrade sand filter can handle feed water upto 25 NTU turbidity and the treated water from this range of filters will have <2 NTU.
Advantages
Features
- Higher specific flow rate than conventional down flow filters thereby saving on space and cost.
- Very little maintenance required.
- Lower backwash water requirement.
- In most cases, raw water can be used for backwash.
- Plastic piping do not require Maintenance and are corrosive resistance.
- Single lever operated multiport valve makes it user friendly & easy to operate.
- Custom sizes and configurations.
- Ideal for pre-treatment
- Higher Specific velocity.
- Raw water can be used for backwashing the filter.
Applications
- It is extensively used in side stream filtration of potable water treatment.
- It is ideal for filtration of clarified water.
- In addition it finds application in sea water filtration & filtration of chemical solutions. For these types of filtrations rubber lined or epoxy painted filters can be offered.
- Pre treatment for Reverse Osmosis System.
- Swimming Pool Filtration in Housing Societies & Hotels.
- Pre treatment for Cooling towers and boiler feed.
Available Ranges & Models
- 1 M3/Hr. to 100 M3/Hr.
- Option of MOC – Mild Steel Epoxy Painted / Mild Steel Rubber Lined / Mild Steel FRP Lined / FRP / Stainless Steel.
- Diameter Available from 200 mm to 4000 mm.
- Standard Heights Available from 1200 mm (Packed Bed) to 2500 mm HOS.
- Manually Operated Valves: Manual Operated / Electrically / Pneumatically Actuated.
- Multiport Valve: Manual Operated MPV/ Automatic Operated MPV.