Sewage Treatment
Compact. Quiet. Compliant. Built for built environments.
The Challenge
Urban developments generate sewage. Your consent requires you to treat it.
Hotels, IT parks, residential complexes, and mixed-use developments require on-site STPs under Maharashtra's (and most states') building bye-laws. The challenge: most STPs are noisy, odorous, and space-hungry — the opposite of what a premium development can afford. NWPL's MBR-based STPs are designed to be invisible: below-ground, odour-free, and yielding treated water clean enough to reuse in flushing and landscaping.
of treated STP water can be reused for flushing and irrigation, reducing freshwater bills
How It Works
MBR technology — biological treatment meets membrane filtration.
Membrane Bioreactor (MBR) STPs combine conventional activated sludge with ultrafiltration membranes in a single compact tank, eliminating the large secondary clarifier of traditional systems.
Screening & Equalisation
Fine screens and a flow-equalisation tank buffer peak morning and evening loads. An enclosed, ventilated odour-control unit manages headspace gases at the inlet — critical for hotel basements and urban settings.
Membrane Bioreactor (MBR)
Submerged hollow-fibre UF membranes filter at 0.04 micron, producing permeate with BOD <5 mg/L and TSS <2 mg/L — far exceeding CPCB norms. The compact tank footprint is 30–40% smaller than equivalent SBR or MBBR plants.
Tertiary & Reuse
A chlorination contact tank provides disinfection to BIS-potable standards, enabling reuse in toilet flushing, cooling tower makeup, vehicle wash, and landscape irrigation. Dual-plumbing connection drawings provided for your MEP team.
Technical Specifications
Built for precision.
| Parameter | Value / Range |
|---|---|
| Capacity range | 10 KLD – 2 MLD |
| MBR membrane pore size | 0.04micron |
| Outlet BOD | ≤ 10mg/L |
| Outlet TSS | ≤ 10mg/L |
| Outlet faecal coliform | < 100MPN/100 mL |
| Footprint vs. SBR equivalent | 30–40% smaller |
| Odour control | Enclosed, ventilated, BioFilter |
| Noise level | < 55dBA at 3m |
Case Study
Proven in the field.
5-Star Hotel STP — 100 KLD, Mumbai, Maharashtra
MBR STP installed in basement plant room. Outlet BOD consistently <8 mg/L. 65 KLD recycled daily to toilet flushing and pool makeup — saving ₹22 lakh/year in MCGM water charges. Zero odour complaints from hotel operations team in 3 years of operation.
View all projectsCompliance Context
RERA, OC norms, and PCB consent — all in one compliant plant.
STPs are mandatory for buildings above a certain area in most Indian states. Occupancy Certificates are withheld until the STP is commissioned and test reports submitted. NWPL provides all documentation — commissioning reports, test certificates, and SPCB consent application support — to ensure your project timeline is not delayed at the final hurdle.
CPCB Minimal National Standards (MINAS) for STP outlet
State building bye-laws (MahaRERA, DTCP, BBMP, HMDA)
BIS IS 2490 — Tolerance limits for industrial effluents
ULB requirements for dual plumbing and reuse connections
GRIHA / LEED India certification credits (Water Efficiency)
What could you save?
Calculate your NPV, IRR & payback period
Frequently Asked
Common questions answered.
Related Industries
Designed for your sector.
Request a Technical Audit for Sewage Treatment.
Tell us your capacity, inlet profile, and compliance targets. We'll size a system that fits.