Sewage Treatment Plant (STP) Manufacturer & Supplier in Surat

A Sewage Treatment Plant (STP) is a facility that processes domestic and municipal wastewater to remove contaminants before the treated water is discharged or reused. The process involves physical, biological, and chemical treatment stages that remove suspended solids, organic matter, nutrients, and pathogens.

Modern STP systems use technologies including MBBR (Moving Bed Biofilm Reactor), MBR (Membrane Bioreactor), SBR (Sequencing Batch Reactor), and conventional activated sludge processes — each suited to different capacities and site conditions.

In India, STPs are mandatory for residential societies above 20,000 sqm built-up area, commercial complexes, hotels, hospitals, and all industrial facilities discharging domestic effluent — as per CPCB norms and local Pollution Control Board regulations.

Surat's economy runs on two industries that dominate its wastewater profile: textile processing and diamond cutting and polishing. GPCB has issued specific, tighter norms for Surat given the sheer scale of dyeing and processing activity concentrated in GIDC Surat, Pandesara, and Kadodara, and zero liquid discharge requirements apply to a large share of the city's textile processing units.

This makes Surat one of the more technically demanding cities we work in. A dyeing unit's effluent carries heavy colour load and dissolved solids that a standard STP process was never designed to handle, so most of our Surat projects are effluent treatment systems built for textile-specific contamination, with domestic sewage treatment as a smaller attached component rather than the main scope.

Sachin Industrial Estate and Kim Industrial host a broader manufacturing mix alongside textiles, giving us a mix of standard and ZLD-linked projects across the city depending on the specific zone and unit type.

Textile dyeing effluent in Surat carries a colour and dissolved-solids load that conventional biological treatment alone cannot fully remove, which is why GIDC Surat and Pandesara units typically need a multi-stage system — physical and chemical treatment for colour and solids removal, followed by a biological stage, and for many units, a final ZLD-grade recovery stage GPCB requires for this sector. The domestic sewage component from staff facilities is treated separately and is a smaller part of the overall design.

Diamond processing units, concentrated in specific pockets of the city, have a different effluent profile again, generally lower in organic load but sometimes carrying fine particulate matter that needs settling and filtration ahead of any biological stage. Sachin and Kim Industrial's more mixed manufacturing base means we assess each unit's specific process before proposing a treatment train, rather than applying one standard design across the zone.