VEPL’s Large Capacity Sewage Treatment Plant (STP) is a custom-engineered, high-efficiency solution for treating and recycling large volumes of domestic or industrial wastewater — ranging from 500 KLD to campuses, these STPs are designed with cutting-edge technologies including:
Sequential Batch Reactor (SBR) / Moving Bed Biofilm Reactor (MBBR)
Tertiary Treatment with Ultra-Filtration (UF), UV, and Ozonation
Sludge Handling with Filter Press and Drying Beds
Advanced SCADA/PLC-based automation (Optional)
Key System Components
Treatment Stage
Description
Preliminary
Screening chamber, oil & grease trap, grit removal
Equalization Tank
Stabilizes flow and load variations
Biological Treatment
MBBR / SBR / ASP process using EM solution or bio-culture
Secondary Clarifier
Settles biological sludge
Tertiary Treatment
Sand filter + carbon filter + UF membrane
Disinfection
UV system + Optional Ozonator
Sludge Management
Sludge drying beds + filter press for dewatering
Reuse Distribution
Treated water storage tank + pumps for reuse (flushing, irrigation, etc.)
Backup
Standby pumps, blowers, and DG integration for 24×7 operation
Technical Specifications
Parameter
Specification
Capacity
500 KLD to 2000 KLD+ (Modular design for higher capacity)
Treated Water Use
Flushing, landscaping, HVAC makeup, cooling towers, construction
Technology Options
MBBR, SBR, or Conventional ASP (depending on client/site)
Power Supply
3-phase, 50 Hz with energy-efficient motors
Automation
SCADA/PLC integration available
Structure Type
RCC, MS with epoxy coating, or hybrid (based on site)
Estimated Power Consumption (Approximate)
Plant Size
Total Power Load
Equipment Breakdown
500 KLD
40–50 HP
Blowers: 15–20 HP, Pumps: 15 HP, UV/Ozone/UF: 10–15 HP
750 KLD
65–75 HP
Blowers: 25 HP, Pumps: 20 HP, UF/Disinfection: 20 HP
1000 KLD
85–100 HP
Blowers: 30 HP, Pumps: 30 HP, UF/UV/Ozone: 25–30 HP
Standby units included for critical components (pumps, blowers, etc.)
Treatment Process & Parameters
Primary Treatment
(Screening, Oil & Grease Removal, Equalization)
Parameter
Inlet (Raw Sewage)
Outlet (After Primary)
pH
6.5 – 8.5
6.5 – 8.5
BOD
200 – 350 mg/L
150 – 200 mg/L
COD
400 – 600 mg/L
250 – 400 mg/L
TSS
150 – 300 mg/L
100 – 150 mg/L
Oil & Grease
20 – 50 mg/L
< 20 mg/L
Secondary Treatment
(Biological Treatment – MBBR/FAB/SBR + Clarifier)
Parameter
Inlet (From Primary)
Outlet (After Secondary)
BOD
150 – 200 mg/L
< 30 mg/L
COD
250 – 400 mg/L
< 100 mg/L
TSS
100 – 150 mg/L
< 30 mg/L
Ammonia (NH₄)
15 – 30 mg/L
< 10 mg/L
Odor
Present
Mild/Neutralized
Tertiary Treatment
(Sand Filter + Activated Carbon Filter + UV/Chlorination)
Parameter
Inlet (From Secondary)
Outlet (After Tertiary)
BOD
< 30 mg/L
< 10 mg/L
COD
< 100 mg/L
< 30 mg/L
TSS
< 30 mg/L
< 5 mg/L
Pathogens
Present
90–99% Removed
Color & Odor
Slight / Off
Clear & Odor-Free
After Ultrafiltration (UF) – Optional Final Polishing
Parameter
Inlet (From Tertiary)
Outlet (After UF)
BOD
< 10 mg/L
< 5 mg/L
TSS
< 5 mg/L
< 1 mg/L
Turbidity
< 5 NTU
< 1 NTU
Pathogen Removal
~99%
99.99%
Water Quality
Non-potable reuse
Reuse for gardening, flushing, cooling ✅
Biological Treatment Media
Type: High-surface-area MBBR media or batch-activated sludge
Inoculation: EM Solution / Commercial Bacterial Culture
Advantages: Faster start-up, stable performance under load fluctuations
Sludge Handling: Sludge dewatering through filter press and disposal as per PCB norms
Key Advantages
Designed for 100% Reuse – Complies with Zero Liquid Discharge (ZLD) policies
Automation-Ready – SCADA/PLC-enabled for remote monitoring
Reliable Operation – Engineered for continuous duty with built-in redundancy
Regulatory Compliant – CPCB, NGT, and state PCB approved discharge norms
Long Lifespan – Heavy-duty construction for 20+ years of operation
Expandable – Modular configuration for phased growth
Applications
Smart Cities & Municipal Townships
IT Parks, SEZs, & Industrial Clusters
Airports, Rail Terminals, & Stadiums
Mega Housing Projects & Mixed-Use Developments
Universities, Defense Zones, & Hospitals
Construction Camps & Infrastructure Projects
Certifications & Standards
CPCB & SPCB Compliant
ISO 9001:2015 Certified System Design
RERA, NGT, and MoEF Guidelines Compliance
Green Building Norms & IGBC Criteria Support
