Advanced STP with UV & Ozonation for Water Recycling
A High-Performance Water Recovery System by VEPL
VEPL’s Advanced Sewage Treatment Plant (STP) with UV & Ozonation is a state-of-the-art wastewater treatment and recycling system designed to treat and reclaim domestic sewage for safe, sustainable reuse. Incorporating biological treatment, filtration, ultra-filtration (UF), ozonation, and UV disinfection, this STP delivers crystal-clear, pathogen-free water suitable for:
- Toilet flushing
- Horticulture & landscaping
- Construction activities
- Cooling towers
This system is ideal for urban housing societies, hospitals, institutions, hotels, and commercial complexes looking to minimize fresh water dependency.
System Components & Flow Process
Treatment Process & Parameters
Power Consumption Estimate
Standby motors & blowers included for uninterrupted operation
Bacterial Culture / EM Solution
| Stage | Component | Description |
| Screening & Equalization Tank | Removes large solids, balances flow rate | |
| Anaerobic / Aerobic Biological Treatment (MBBR or SBR) | Degrades BOD, COD using bacteria culture or EM solution | |
| Clarifier / Settling Tank | Separates sludge and treated water | |
| Filter Press | Dehydrates sludge for easy disposal | |
| Ultra-Filtration (UF) Unit | Removes fine suspended particles & bacteria | |
| UV Disinfection Unit | Destroys bacteria, viruses, and pathogens | |
| Ozonator | Final polishing; removes odor, color, and organic traces | |
| Treated Water Tank | Stores reusable water for distribution |
- Primary Treatment
| 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
| 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
| 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 ✅ | ||
| Capacity | Power Required | Equipment Breakdown |
| 10 KLD | ~3–4 HP | 1 HP blower, 1.5 HP pump, 0.5 HP UV, 1 HP UF/Ozone |
| 25 KLD | ~7–8 HP | 2 HP blower, 2 HP pump, 1 HP UV, 2 HP UF & ozone |
| 50 KLD | ~12–15 HP | 3 HP blower, 3 HP pump, 1.5 HP UV, 3 HP UF, 2 HP ozonator |
| 100 KLD | ~20–25 HP | 5 HP blower, 5 HP pump, 2 HP UV, 5 HP UF, 3–4 HP ozonator |
- Type: Ready-to-use, high-count microbial cultures
- Function: Accelerates organic degradation in the biological treatment stage
- Dosage: As per influent load and STP capacity
- Eco-Safe: 100% biodegradable and non-toxic
- High-Quality Reuse Water (Meets CPCB & PCB norms)
- Dual Disinfection (UV + Ozone = Near-zero pathogens)
- Low Chemical Dependency
- Odor-Free & Clear Output
- Modular, Compact Design
- Redundant Safety Systems (Standby pumps & blowers)
- Sludge Reduction with filter press
- Low Lifecycle Cost
- Residential Apartments & Housing Societies
- Hospitals & Healthcare Facilities
- Hotels & Resorts
- Commercial Buildings
- Schools, Colleges & Universities
- Industrial Complexes (for domestic sewage)
- CPCB / State PCB Norms
- Jal Shakti & MoEF Guidelines
- National Green Tribunal (NGT) Directions
- ISO 9001:2015 Certified Manufacturing