biological treatment plants

Advanced Biological Wastewater Treatment Technology The FAB (Fluidized Aerobic Bio-Reactor) is a biological wastewater treatment system that uses aerobic microbes attached to suspended media to break down organic matter in sewage. The media, kept in constant motion through aeration, increases surface area for microbial growth, enabling efficient treatment in a compact footprint. The system is ideal for decentralized and medium-sized sewage treatment applications where space, efficiency, and automation are priorities. Product Overview VEPL’s FAB STP System is a plug-and-play, modular, and scalable sewage treatment plant suitable for residential colonies, hotels, hospitals, institutions, and industrial establishments. The FAB process ensures low sludge generation, excellent BOD/COD reduction, and crystal-clear treated water suitable for reuse in flushing, landscaping, and car washing. Designed for long-term, reliable performance with minimal maintenance, VEPL’s FAB STP meets CPCB and State Pollution Control Board (SPCB) norms with ease. FAB STP System-4 FAB STP System (Fluidized Aerobic Bio-Reactor) FAB STP System-1 FAB STP System-3 FAB STP System-2 FAB STP System-4 FAB STP System (Fluidized Aerobic Bio-Reactor) Previous Next System Components & Process Flow Stage Component Function Screening Chamber Removes debris, grit, and solid waste Equalization Tank Regulates variable inflow & stabilizes sewage FAB Reactor Contains floating bio-media & blowers for aerobic digestion Secondary Clarifier Settles suspended solids from treated sewage Sludge Management Sludge pump to filter press or drying beds Tertiary Treatment Sand filter + carbon filter + optional Ultra Filtration (UF) Disinfection UV unit / Ozonator to kill pathogens Treated Water Tank Stores clean water for reuse Standby Equipment Backup blower & pump for uninterrupted service Control Panel Manual or PLC-based control panel with safety alarms Technical Specifications Parameter Specification Technology FAB (Attached Growth Aerobic Process) Capacity Range 5 KLD to 500 KLD (modular expansion possible) Media Type HDPE/PP floating bio-media (600–800 m²/m³ surface area) Disinfection UV + Optional Ozone Structure FRP, MS (epoxy coated), or RCC tanks Automation Semi-auto / PLC-based options available 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 ✅ Power Requirement (Approximate) Plant Size Total Load Main Equipment 10 KLD ~3–4 HP 1 HP blower, 1 HP pump, 1 HP filter, UV 50 KLD ~10–12 HP 3–5 HP blower, 3 HP pump, 1.5 HP UV 100 KLD ~18–20 HP 5 HP blower, 5 HP pump, UV/Ozone/Filter Press Includes standby blower and pump for continuous 24×7 operation. Biological Treatment Highlights Media-Based Biofilm: Enhances microbial contact with wastewater EM/Bio-Culture Optional: Accelerates seeding and enhances process efficiency Low Sludge Volume: Minimal handling and disposal required Odor-Free: Aerobic digestion reduces foul smells Why Choose FAB STP by VEPL? Compact & Modular Design – Ideal for space-constrained sites Low O&M Cost – Efficient power usage, minimal chemical requirement High Treatment Efficiency – BOD/COD removal >90% Durable Build – MS/FRP with anti-corrosive coating or RCC Reuse-Ready Output – Meets flushing & gardening standards Complies with CPCB/SPCB Norms Quick Installation – Fabricated unit ready in weeks Applications Apartment Complexes & Townships Hospitals, Hotels, and Resorts Schools, Universities & Hostels Government and Military Camps Commercial Buildings & Malls Small Industries & Food Parks Certifications & Approvals CPCB & SPCB Compliance ISO 9001:2015 Certified Design & Fabrication Supports NGT, RERA, and Gr

Understanding the Challenge: Industry-Specific Effluent Complexity Effluent Treatment is not a one-size-fits-all solution. At Ventilair Engineers Pvt. Ltd. (VEPL), we treat Effluent Treatment Plant (ETP) design as a knowledge-intensive and case-specific discipline, guided by one critical parameter—wastewater quality. Every industry, and often every plant within an industry, generates unique effluent characteristics. Therefore, before proposing any solution, VEPL mandates a comprehensive water quality analysis from an accredited laboratory. Only then can we determine the most suitable treatment pathway—physio-Chemical, Biological, or a Hybrid System. Screenshot 2025-10-30 141421 Screenshot 2025-10-30 141413 Screenshot 2025-10-30 141421 Screenshot 2025-10-30 141413 Previous Next Rice Mill Wastewater: A Special Case Rice milling, especially when comparing raw rice to parboiled rice processing, produces widely varying wastewater in terms of: BOD (Biochemical Oxygen Demand) COD (Chemical Oxygen Demand) TSS (Total Suspended Solids) Oil & Grease Color, Odor, and pH variability These differences necessitate a specialized approach to treatment. VEPL’s Innovation: Hybrid Effluent Treatment Plant (H-ETP) To address the complexities of rice mill effluent, VEPL has developed and implemented the Hybrid Effluent Treatment Plant (H-ETP) — a proprietary solution that combines: physio-Chemical Treatment Biological Treatment Optional advanced tertiary steps like Ozonation, Reed Bed Systems, and Polishing Units This integrated multi-stage approach ensures high efficiency in reducing BOD, COD, and TSS levels, even under extreme conditions. We refer to this system as a Mix Biological & Combined Treatment Plant, or more commonly as our Biological ETP Hybrid Model. Why Choose VEPL for Rice Mill ETPs? Over 20 years of ETP expertise across industrial sectors Customized Hybrid ETPs for raw and parboiled rice mills In-house design, engineering, and commissioning Proven results for extreme BOD/COD reduction Integration of eco-friendly & energy-efficient technology