The membrane is the expensive part. Filtration is how you keep it that way.
From seawater intake to ultra-pure polishing, Gopani engineers the stages that protect membranes, boilers, and compliance limits. Higher dirt-holding capacity per element, longer runs between change-outs, lower spend per cubic metre treated.
Where we are specified
Desalination and RO pretreatment
SDI and turbidity reduction ahead of SWRO and BWRO membranes with RO Protect cartridges and high flow elements. The membrane bank costs crores; the cartridges protecting it should be chosen on protection, not price.
Raw, process, and DI water
Staged trains from bag filtration through fine cartridges for boiler feed, cooling circuits, and deionised loops.
Effluent and wastewater
High-solids duty with ClaryFil bags, self-cleaning filters, and activated carbon for organics, meeting discharge compliance without runaway consumable spend.
High-purity and pharma water
Polishing stages for ultra-pure loops and water for injection support, with documentation to match.
Reclaim and discharge
Water reclaimed for reuse in industrial and utility service, and discharge streams cleaned with high dirt-holding elements to stay inside environmental limits.
Boiler feed and cooling water
Rust, scale and suspended matter out of boiler feedwater; suspended solids and biological load out of cooling circuits, for steadier heat transfer.
The product map for water buyers
| Process need | Gopani range | What it protects |
|---|---|---|
| RO and membrane prefiltration | RO Protect melt blown, Clarywound, high flow elements | Membrane flux and replacement budget |
| Bulk solids removal | ClaryFil filter bags, self-cleaning filters | Downstream cartridge life |
| Chlorine and organics | ClaryCarb activated carbon | Membranes and product water quality |
| Housings for water chemistry | Clary-T SS, Polyfilt uPVC, FRP, Plastofilt PP | Uptime in corrosive service |
| Fine and polishing stages | Clarypleat pleated range | Final water specification |
| DI loops | Cartridge trap filters | Water quality against sediment and ion exchange bead migration |
| Biofouling risk ahead of membranes | 1 micron cartridge stage | Membranes, by capturing many bacteria and cysts |
| Hydrocarbons in water | Clarysorb oil-adsorbing cartridges, coalescers | Membranes, discharge compliance |
What you can check before you order
A certified quality system
ISO 9001:2015 certified manufacturing, with every product quality-tested before it leaves the facility.
Stock for planned change-outs
A large inventory held for water treatment elements, so the delivery you are promised is the delivery you get.
A contaminant analysis first
We analyse the contaminants in your water before we design the filter system, so the staging answers your feed rather than a catalogue.
What is not here yet
No plant results are published on this page yet. We will measure change-out interval and cost per cubic metre on your plant in a trial, and give you the result in writing.
Water treatment filtration: direct answers
How does prefiltration actually extend RO membrane life?
Membranes foul from suspended solids, colloids, and biological load that prefiltration should have removed. Correctly staged prefiltration brings silt density index and turbidity down before the membrane, which stretches cleaning intervals, holds flux, and defers replacement of the most expensive consumable in the plant. The cartridge spend is small against the membrane spend it protects; that arithmetic is the whole selection logic.
Bag filters or cartridges for water treatment duty?
Both, staged. Bags take the bulk solids economically at high flow; cartridges do the fine protection work behind them. Where flows are large, high flow elements at up to 500 GPM each collapse the element count and the change-out labour. We size the stages from your flow and solids data.
How do I select the right filtration system for my water?
Start from four things: the water source, the contaminants in it, the output quality you need, and the compliance requirement on the treated water. From those we recommend the combination of filters and housings, stage by stage. Send the water analysis with the flow.
What does a trap filter do in a DI system?
It sits in the deionisation loop and stops sediment, and ion exchange beads that migrate out of the resin bed, from reaching the water downstream.
What removes dissolved contaminants like chlorine and organics?
Activated carbon stages: ClaryCarb blocks and granular carbon, plus specialty media where hardness salts or heavy metals are the target. Carbon protects downstream RO membranes from oxidation as well as polishing taste and odour in product water.
Bring us your SDI problem.
Feed analysis, flow, and current change-out interval. We will design the staging and show the cost per cubic metre against what you run today.