A package STP plant is a factory-built, skid-mounted or containerised sewage treatment system that arrives at site ready to install — eliminating the need for large civil construction. Leading package STP plant manufacturers in India supply systems from 5 KLD to 500 KLD using SBR, MBBR or MBR technology, fully compliant with CPCB and state PCB discharge norms.
India's rapid urbanisation — new residential towers, commercial complexes, hotels, hospitals and industrial campuses — has created enormous demand for compact, fast-to-deploy sewage treatment solutions. Package STP plants answer that demand: they are engineered, fabricated and tested at the manufacturer's facility, then delivered to site as a complete unit. Installation time drops from months to weeks, civil costs fall sharply, and the plant is ready to commission almost immediately after delivery.
What Is a Package STP Plant?
A package STP (Sewage Treatment Plant) is a pre-engineered, factory-assembled treatment system housed in a compact steel or FRP structure — sometimes a standard shipping container — that integrates all treatment stages: screening, biological treatment, secondary clarification (or membrane separation), tertiary polishing and disinfection. Unlike a conventional STP that is built in-situ with RCC tanks and civil construction, a package plant is manufactured under controlled factory conditions, quality-tested before dispatch and installed on a prepared plinth at site.
Factory-built and tested
All components are assembled and tested at the manufacturer's facility before dispatch — reducing site installation time to days rather than months.
Compact footprint
Package plants occupy 30–60% less area than equivalent conventional STPs, making them ideal for basements, terraces, stilt areas and constrained urban sites.
Fully automated PLC control
Integrated PLC with HMI panel automates the treatment cycle, alarms and data logging — minimising the need for skilled on-site operators.
Plug-and-play installation
Inlet, outlet, power and sludge connections are the only site interfaces — the plant is operational within days of delivery.
Modular and scalable
Additional modules can be added as the building population grows, protecting the initial investment.
CPCB-compliant treated water
Properly designed package STPs consistently meet CPCB and state PCB discharge norms for BOD, COD, TSS, pH and faecal coliform.
SBR vs MBBR vs MBR: Which Package STP Technology Is Right for You?
SBR (Sequential Batch Reactor)
How it works
Fill, aerate, settle and decant happen sequentially in a single basin — eliminating the need for a secondary clarifier.
Treated water quality
BOD < 10 mg/L, TSS < 10 mg/L — suitable for reuse for flushing, gardening and cooling.
Advantages
Best treated-water quality; lowest footprint; handles fluctuating loads; fully automated; no clarifier mechanism.
Limitations
Slightly higher blower energy than MBBR; requires reliable power supply for PLC sequencing.
Best for
Residential complexes, commercial buildings, hospitals, hotels — 10 KLD to 500 KLD.
MBBR (Moving Bed Biofilm Reactor)
How it works
Plastic biofilm carriers suspended in the aeration tank provide a large surface area for biological treatment — no sludge recycle required.
Treated water quality
BOD 20–30 mg/L without tertiary; < 10 mg/L with sand filter + UV polishing.
Advantages
Simple operation; lower capital cost than SBR; robust to load variations; easy to upgrade.
Limitations
Requires a secondary clarifier; treated water quality slightly lower than SBR (BOD 20–30 mg/L without tertiary).
Best for
Industrial campuses, commercial complexes, smaller residential projects — 10 KLD to 200 KLD.
MBR (Membrane Bioreactor)
How it works
Submerged ultrafiltration membranes replace the secondary clarifier — producing high-quality treated water in a single compact unit.
Treated water quality
BOD < 5 mg/L, TSS < 2 mg/L, turbidity < 1 NTU — suitable for toilet flushing, cooling and landscape irrigation.
Advantages
Highest treated-water quality; smallest footprint; no secondary clarifier; treated water suitable for direct reuse.
Limitations
Highest capital cost; membrane replacement every 5–8 years; sensitive to grease and fibrous solids.
Best for
Hospitals, pharmaceutical campuses, luxury hotels, water-scarce locations — 5 KLD to 200 KLD.
Package STP Plant Capacity Guide: What Size Do You Need?
| Application | Capacity | Recommended Technology |
|---|---|---|
| Small residential complex (20–50 flats) | 10–20 KLD | Package SBR or MBBR |
| Mid-size residential society (50–150 flats) | 20–50 KLD | Package SBR |
| Large residential complex (150–300 flats) | 50–100 KLD | Package SBR or MBR |
| Hotel (50–150 rooms) | 15–50 KLD | Package SBR or MBR |
| Hospital (100–300 beds) | 20–60 KLD | Package MBR (infection control) |
| IT / commercial campus (500–2,000 employees) | 25–100 KLD | Package SBR or MBBR |
| Industrial estate / township | 100–500 KLD | Package SBR (multi-module) |
Regulatory Compliance for Package STP Plants in India
Package STP plants in India must comply with a layered set of regulations. A reputable manufacturer will design the plant to meet all applicable norms and provide treated-water quality guarantees backed by third-party lab reports.
CPCB (Central Pollution Control Board)
Discharge to surface water: BOD ≤ 30 mg/L, TSS ≤ 100 mg/L, pH 6.5–9.0. Reuse for irrigation: BOD ≤ 100 mg/L. Reuse for flushing: BOD ≤ 10 mg/L, TSS ≤ 10 mg/L, faecal coliform ≤ 100 MPN/100 mL.
National Green Tribunal (NGT)
NGT orders mandate on-site STPs for all new residential and commercial projects above a threshold — typically 20+ flats or a specified built-up area — before occupation certificates are issued.
State Pollution Control Boards
State PCBs may impose stricter discharge norms than CPCB. Maharashtra, Karnataka, Tamil Nadu and Delhi have specific norms for high-density urban areas. Consent to Establish (CTE) and Consent to Operate (CTO) are required.
Municipal Building Bylaws
Most major municipal corporations (MCGM, BBMP, GHMC, CMDA) mandate STPs in building plans. The STP must be shown in the building plan submitted for approval.
Why Choose Aquatic Solutions as Your Package STP Plant Manufacturer?
Aquatic Solutions has been designing and manufacturing package STP plants for residential complexes, commercial buildings, hotels, hospitals and industrial campuses across India for over two decades. Our package plants are engineered in-house, fabricated at our facility, tested before dispatch and backed by comprehensive AMC support.
- In-house design and fabrication — no outsourced components
- All three technologies: SBR, MBBR and MBR — we recommend the right one for your project
- Capacity range: 5 KLD to 500 KLD in a single package unit
- CPCB-compliant treated-water quality guarantees with third-party lab reports
- Service locations: Mumbai, Pune, Hyderabad, Bangalore, Chennai, Goa, Surat, Noida
- Comprehensive AMC with rapid-response service teams and spare-parts availability
Explore Our STP Products
Frequently Asked Questions
What is a package STP plant and how is it different from a conventional STP?
A package STP plant is a factory-built, pre-engineered sewage treatment system that arrives at site as a complete unit — ready to connect and commission. A conventional STP is built in-situ with RCC tanks, civil construction and on-site assembly. Package plants are faster to install (days vs months), require less civil work, have a smaller footprint and are quality-tested before delivery. They are ideal for residential complexes, hotels, hospitals and commercial buildings where space and time are constraints.
Which technology is best for a package STP plant — SBR, MBBR or MBR?
SBR is the most popular choice for residential and commercial buildings: it delivers the best treated-water quality (BOD < 10 mg/L), handles fluctuating loads well and needs no secondary clarifier. MBBR is simpler and slightly cheaper but needs a clarifier and produces slightly lower quality without tertiary treatment. MBR gives the highest quality in the smallest footprint but costs 30–50% more and requires membrane maintenance. Aquatic Solutions recommends the right technology based on your capacity, site constraints and reuse requirements.
What is the cost of a package STP plant in India?
Package STP plant costs in India range from ₹5–10 lakh for a 10-KLD SBR system to ₹40–80 lakh for a 100-KLD plant. MBR systems cost 30–50% more than SBR for the same capacity. The final cost depends on technology, capacity, automation level, tertiary treatment scope and site conditions. Contact Aquatic Solutions for a detailed quotation based on your specific requirements.
How long does it take to install a package STP plant?
A package STP plant can typically be installed and commissioned in 2–6 weeks from delivery, depending on site readiness. The plinth and civil connections (inlet, outlet, power, sludge) must be ready before delivery. Compare this to 3–6 months for a conventional in-situ STP — the time saving is one of the biggest advantages of a package plant.
Is a package STP plant mandatory for residential buildings in India?
Yes, for buildings above a threshold. The NGT and most state pollution control boards mandate on-site STPs for residential buildings with 20 or more flats, or above a specified built-up area. Municipal corporations in cities like Mumbai, Pune, Bangalore, Hyderabad and Chennai require STPs to be shown in building plans before approval. A package STP is the most practical solution for most residential projects.
Can the treated water from a package STP be reused?
Yes. SBR and MBR package STPs produce treated water that meets CPCB reuse norms for toilet flushing (BOD ≤ 10 mg/L), landscaping and cooling tower make-up after tertiary polishing (sand filter + activated carbon + UV). Reusing treated water can reduce a building's freshwater consumption by 30–40%, delivering significant water and cost savings.
Get a Free Quote for Your Package STP Plant
Share your capacity requirement, site location and application — we will recommend the right technology and provide a detailed cost estimate within 24 hours.