Tertiary Treatment — PSF, ACF & UF
The polishing stage that makes reuse limits consistently achievable
How it works
Secondary treatment alone will not hold BOD, TSS and turbidity within CPCB reuse limits under varying load. The tertiary stage is what converts a compliant-on-paper plant into a consistently compliant one, and it is included as standard on every plant we supply.
How the plant is arranged
Click any vessel to read what it does.
The final barrier between treatment and dependable reuse.
Pressure, media, membrane, and storage stages are separated so the operating sequence and optional UF bypass are easy to understand.
Pressure Sand Filter
Graded silica sand captures fine suspended solids and reduces turbidity.
Process flow
Follow the numbered train from inlet to treated-water reuse. Click any stage for its engineering note.
Secondary Treated Water
From clarifier or settling tank.
Why PSF / ACF / UF
Reduces TSS to below 10 mg/l, meeting the CPCB reuse requirement.
Adsorbs residual colour, odour, dissolved organics and free chlorine.
Delivers odour-free, visually clear water for domestic flushing.
Optional UF removes suspended solids, colloidal matter, bacteria and cysts almost completely.
Backwash water is returned to the collection or equalization tank — no net effluent loss.
Included as standard on every plant we supply for reuse duty.
Who it's for
Other technologies
Considering PSF / ACF / UF for your site?
Tell us your flow and footprint — we'll confirm the right sizing.