The 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 upto 100m3/hr have been successfully obtained for treating water containing 25-50 ppm suspended solids respectively to produce a filtrate with less than 5ppm.
Features:
•
Higher specific velocity.
•
Raw water can be used for backwashing the filter.
Advantages:
•
Higher specific flow rate than conventional downflow 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 Multigrade sand filters filter is an ideal choice for all applications where a conventional sand filter is used.
•
It is extensively used in sidestream 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 filtrations 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 anticorrosive 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 & underbed material.
•
One set of frontal pipework & 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.
•
Multigrade sand filters are available from 600 to 3000mn diameters.
FILTRATION PLANTS - ACTIVATED CARBON FILTER
Our range of MS/MSRL/NG series of manual activated carbon filters are manufacture using granular activated carbon as media, making them ideally suited for dechlorination of water with free chlorine content & for the effective removal of organic matter. We use superior grade of fibre reinforced plastic (FRP) and allied materials that helps in making our products more durable.
Features:
•
Light weight equipment.
•
Easy to install - does not require concrete foundation
(NG Series)
The NG series of activated carbon filters are aesthetic, light weight and easy to install.
Advantages:
•
Light weight equipment, which is easy to install.
•
Do not require concrete foundations.
•
Single lever operated multi-port valve makes it more user friendly and easy to operate.
•
Plastic pressure vessel and piping do not require maintenance & are corrosion resistant.
Applications:
•
For dechlorination of water for industrial/drinking water applications.
•
Removal of organic matter from water.
•
Filters are available in MS,MSRL,FRP,operating in Manual/Auto mode.
Also Available with 7.5 minutes and 15 minutes contact time.
Specifications:
•
FRP pressure vessel, fitted with plastic internal fittings.
•
Set of plastic frontal piping, linking multi-port valve/plastic ball valves to FRP vessel.
•
Complete charge of suitable filter media with supporting under bed media.
