India's most advanced civil-built Sequencing Batch Reactor sewage treatment plant — five-phase cyclic biology in custom RCC tanks, fully underground capable, designed to your site layout. Handles fluctuating loads, delivers full nitrogen & phosphorus removal, and runs at 65–70% lower energy than conventional ASP. BOD < 10 mg/L. 50 KLD to 5 MLD.
Fill → React → Settle → Decant → Idle — all in custom RCC or brick civil tanks, designed to your exact site layout, fully underground if needed. No separate clarifier. PLC + IoT runs every cycle automatically. Nitrogen & phosphorus removal built in. Reuse-grade water every batch.
SUSBIO SBR is a civil-built Sequencing Batch Reactor — an activated sludge process that performs all treatment stages (aeration, settling, decanting) in custom RCC or brick civil tanks using time-based batch cycles. Unlike continuous-flow systems that need separate aeration tanks, clarifiers, and sludge recycle lines, the SBR does everything in sequence inside purpose-built civil chambers designed to your site layout.
Because the tanks are site-built civil structures, SUSBIO SBR can be installed completely underground — under parking slabs, green areas, or open ground — with no surface footprint. The layout adapts to irregular plots. This flexibility, combined with built-in nitrogen and phosphorus removal and a significantly lower system cost than packaged alternatives, makes SBR the preferred specification for municipalities, large townships, and projects where CPCB's nutrient limits are mandatory.
The SBR's power is in its time-sequenced batch operation. Aeration, settling, and decanting happen one after another in the same civil tank — eliminating the footprint and cost of a separate clarifier while delivering superior effluent quality with full nitrogen and phosphorus removal.
Raw screened sewage enters the reactor. Microorganisms contact fresh wastewater. Static fill (no air) or mixed fill (with mixing) — chosen by PLC based on nutrient targets.
Fine-bubble diffusers oxygenate the mixed liquor. BOD, COD, and ammonia are biodegraded. Alternating aerobic/anoxic sub-phases enable simultaneous nitrification–denitrification for N removal.
Blowers stop. Biomass settles under gravity — no mechanical clarifier, no sludge recycle pump. Clear supernatant rises to the top. Quiescent conditions produce superior clarification.
Floating decanter skims clarified treated water from the surface. No solids carry-over. Outlet meets CPCB Class A — ready for toilet flushing, landscaping, or cooling-tower make-up.
Excess sludge wasted to drying beds. System resets for next fill. Multiple tanks operate in staggered cycles for uninterrupted flow in high-load installations.
Civil RCC tank configurations from 50 KLD to 5 MLD — designed to your site layout, fully underground if required. Prices shown are for the SBR system only (equipment, IoT panel, commissioning). Civil tank construction is by your contractor to SUSBIO's supplied drawings — quoted separately by your civil engineer.
| Model | Capacity | Best for | Civil tank configuration | SBR system price (₹)* |
|---|---|---|---|---|
| SS-50 Popular | 50 KLD | Apartment · 250 PE | 2 RCC tanks, fully underground | 12 L |
| SS-100 Popular | 100 KLD | Hospital / IT park · 500 PE | 2 RCC tanks, fully underground | 21 L |
| SS-200 | 200 KLD | Township · 1,000 PE | 2–3 RCC tanks, custom layout | 40 L |
| SS-500 | 500 KLD | Industrial campus · 2,500 PE | 4 RCC tanks, site-adapted | 90 L |
| SS-1000 | 1,000 KLD | Municipality · 5,000 PE | Multi-tank RCC complex | 1.75 Cr |
| SS-2000 | 2,000 KLD | Large municipality · 10,000 PE | Multi-tank RCC complex | 3.25 Cr |
| SS-5000 | 5,000 KLD (5 MLD) | City ward · 25,000 PE | Large RCC multi-tank complex | 7.5 Cr+ |
* SBR system price only — includes equipment (blowers, decanters, PLC panel, IoT sensors, fine-bubble diffusers), civil design drawings, supply, and commissioning. Civil tank construction (RCC/brick) is by the buyer's contractor to SUSBIO's drawings and is not included. PE = Person Equivalent at 200 LPCD. Prices indicative as on May 2026.
Unlike MBBR systems that need add-on stages for nitrogen removal, the SBR's alternating aerobic/anoxic cycle achieves simultaneous nitrification–denitrification in the same civil tank — at no additional footprint or cost.
| Parameter | CPCB (NGT 2019) | SUSBIO SBR (typical) |
|---|---|---|
| BOD₅ (mg/L) | < 10 | < 8 |
| COD (mg/L) | < 50 | < 30 |
| TSS (mg/L) | < 10 | < 8 |
| Ammonia-N (mg/L) | < 5 | < 3 |
| Total Nitrogen (mg/L) | < 10 | < 8 |
| Total Phosphorus (mg/L) | < 1 | < 0.8 |
| Faecal Coliform (MPN/100 mL) | < 100 | < 50 |
| pH | 6.5 – 8.5 | 7.0 – 7.8 |
| Use | NGT 2019 | SUSBIO SBR |
|---|---|---|
| Toilet flushing | Yes | ✓ Direct |
| Landscape / gardening | Yes | ✓ Direct |
| Cooling-tower make-up | Yes | ✓ Direct |
| Floor & vehicle washing | Yes | ✓ Direct |
| Construction curing | Yes | ✓ Direct |
| Agricultural irrigation | Conditional | ✓ With BOD <10 |
| Inland surface discharge | Conditional | ✓ Meets norms |
| Groundwater recharge | With UF/RO polish | ✓ Compatible |
Three leading biological sewage treatment technologies, each with a distinct strength. Choose correctly based on your capacity, nutrient mandate, OPEX budget and operator availability.
| Attribute | SUSBIO SBR | SUSBIO ECOTREAT (MBBR + Anaerobic) | MBR (Membrane Bio Reactor) |
|---|---|---|---|
| Process principle | Batch-mode activated sludge | Continuous biofilm (MBBR) + Anaerobic | Continuous activated sludge + UF membrane |
| Construction type | Civil RCC/brick — site-built, underground capable | Factory FRP — prefabricated, 3–5 day install | Civil or FRP + membrane module |
| Nitrogen removal | Built-in (SND in same tank) | Yes | Partial (with anoxic zone) |
| Phosphorus removal | Built-in (bio-P in idle phase) | Yes | Chemical dosing required |
| Capacity sweet spot | 50 KLD – 5 MLD | 1 KLD – 500 KLD | 50 KLD – 2 MLD |
| Capital cost | Medium (SBR system) + civil by buyer | Low – Medium (all inclusive) | High |
| OPEX (₹/KL treated) | ₹8–12 | ₹5–10 | ₹18–30 (membrane fouling) |
| Lead time | 3 months PO to commissioning | 3–5 days install after delivery | 6–10 weeks |
| Underground install | Yes — fully underground standard | Yes — FRP buried or above-ground | Partially (membrane module above ground) |
| Load fluctuation | Excellent (cycle adapts dynamically) | Good (biofilm resilient) | Moderate (membrane sensitive) |
| Municipal scale | Yes — up to 5 MLD | Up to 500 KLD | Up to 2 MLD |
| Best fit for | Townships, municipalities, large campuses — N/P removal mandatory, full underground preferred | Villas, hotels, apartments, factories needing fastest install | Ultra-high reuse quality or near-zero discharge projects |
SBR and MBBR both deliver CPCB-compliant output. The right choice depends on capacity scale, nutrient norms, underground requirement, and whether a 3-month lead time works for your project.
Every claim is backed by real installation data from SUSBIO's 200+ SBR projects across India and Sri Lanka.
RCC or brick tanks built to your site layout — irregular plots, split levels, fully underground. No restriction on tank shape, depth or orientation.
Any siteSBR's alternating aerobic/anoxic phases achieve nitrification, denitrification, and bio-phosphorus removal in the same tank — no add-on required.
N + PBlowers run only during React phase (~3 hrs/cycle vs 24 hrs continuous for ASP). IoT DO sensors prevent over-aeration.
−70%Lowest O&M cost among biological STP technologies in India. Low sludge generation, no membrane replacement, minimal chemical dosing.
₹8–12Real-time monitoring of DO, pH, ORP, MLSS, ammonia. Automated alerts. OCEMS-ready data feed for SPCB compliance portal.
IoTSUSBIO SBR covers decentralised projects (10 KLD) to full municipal-scale (5 MLD) in a single technology platform. Multi-tank staggered cycles deliver continuous output.
5 MLDSBR cycle time and aeration intensity are dynamically adjusted by PLC. Handles 20% to 150% of design flow without performance compromise.
±50%Pan-India AMC, IoT diagnostics, spare parts, capacity upgrade support. Same team from design through 25 years of operation.
∞From 50-KLD apartment societies to 5-MLD city wards — SBR's load flexibility and underground capability make it the default choice wherever flow is variable and nutrient compliance is mandatory.
SBR handles diurnal and seasonal flow variations without compromising outlet quality. OCEMS connectivity for SPCB real-time monitoring.
Gated communities and integrated townships with 200 KLD+ load where N/P removal is mandated. Fully underground under landscape or parking.
CPCB-compliant nutrient removal, OCEMS data feed, and pre-disinfection before UV polish. Fully underground in hospital basements.
Mixed domestic + industrial sewage streams requiring nutrient removal and consistent effluent quality for SPCB compliance and internal reuse.
Universities, defence installations, large resorts with hostel populations — where weekend dormancy and peak flow demand adaptive cycle control.
Replace failed RCC ASP plants with a SUSBIO SBR system installed into existing civil structures, reusing sound tank walls and plumbing.
High-strength domestic + process sewage from food processing plants, dairy, breweries — SBR's flexible cycle handles shock loads and high nitrogen.
Where occupancy fluctuates seasonally, SBR adapts cycle frequency automatically — consistent CPCB compliance year-round, fully hidden underground.
Full-service design, build, operate and transfer packages for municipal bodies — SUSBIO manages the plant lifecycle under AMC.
SUSBIO handles CTE, CTO, OCEMS connectivity, and annual environmental audits — at no extra cost across all states where we operate.
SUSBIO SBR is engineered to meet the Water (Prevention & Control of Pollution) Act 1974, the Environment Protection Act 1986, and the NGT 2019 reuse mandate. Every unit is pre-configured for OCEMS data submission to the relevant SPCB server — critical for municipal and large industrial projects where online monitoring is mandatory.
For municipal projects, SUSBIO provides EIA support, Form 1 preparation, NOC facilitation and liaison with ULBs, pollution control boards and AMRUT / NMCG programme managers. Our technical team has represented clients before the National Green Tribunal and prepared compliance reports for state PCB inspections across India.
Standard timeline for a 50–200 KLD SUSBIO SBR. SUSBIO's equipment supply runs concurrently with your civil contractor's tank construction — no sequential waiting.
Influent characterisation, hydraulic load calculation, civil drawings issued to your contractor, equipment BOM locked.
Your contractor builds RCC / brick tanks to SUSBIO drawings. Concurrent with SUSBIO equipment manufacturing — no waiting.
Blowers, decanters, diffusers, PLC panel, IoT sensors delivered and installed into completed civil tanks.
Interconnecting pipework, inlet/outlet connections, power incomer, control cabling complete.
Seed sludge inoculated, SBR cycles run, OCEMS connected, operator training, keys handed over.
Real SUSBIO SBR installations with independently verified outlet quality and O&M data.
100 KLD two-tank civil RCC SBR for a 1,200-unit township, fully underground under the garden area. MPCB mandated TN < 10 mg/L. SBR delivered TN avg 6.8 mg/L with no add-on denitrification required.
1000 KLD SBR for 6,000-student hostel campus. Weekend flow drops to 30%. PLC adaptive cycle scheduling maintained BOD < 6 mg/L through all occupancy levels.
100 KLD multi-tank civil SBR treating high-strength mixed sewage. COD inlet 600 mg/L, outlet < 30 mg/L. Reuse to cooling towers saving 18 ML/yr freshwater.
SUSBIO SBR plants operating across 20+ states. Municipal-scale projects in 4 countries. Service engineers within a 4-hour drive of every major city in India.
Straight answers from SUSBIO engineers — no marketing fluff. Call us for anything not covered here.
A SUSBIO process engineer responds within one working day with: indicative SBR system pricing, sizing sheet, civil drawing reference, preliminary BOQ, payment milestones, and your nearest service hub. No obligation.
Deep dives, technology comparisons and CPCB guides to support the SBR keyword cluster.
Anaerobic + MBBR in a single FRP shell for 1 KLD to 500 KLD. The faster, more compact alternative for smaller projects.
See product →Complete technical guide to the Sequencing Batch Reactor process, design parameters, and cycle optimisation for Indian conditions.
Read the guide →Unbiased comparison of SBR, MBBR, MBR, ASP, FAB and other sewage treatment technologies for Indian conditions.
Read the guide →Every CPCB, NGT and SPCB norm a builder needs to know, with the latest 2025 nutrient reuse standards.
Read the guide →Industrial effluent treatment for pharma, textiles, food processing and manufacturing. Pre-treatment before SBR or direct discharge.
See product →Full catalogue — ECOTREAT, SBR, ETP, Bio Digester, Consultancy, AMC and revamp services.
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