AWA OCS – Odor Control System
The Next Generation of Biological Odor Treatment
Odor problems in wastewater facilities are more than a nuisance – they can create public complaints, operational challenges, and regulatory pressure. Traditional chemical scrubbers and masking systems often come with high operating costs, frequent maintenance, and inconsistent performance, especially in locations with fluctuating gas loads such as sewage treatment plants, pumping stations, and sewer networks.
The AWA OCS (Odor Control System) redefines odor management using a scientifically engineered Bio-Trickling Filtration process. Designed by Awatech’s experienced odor-control engineering team, this system offers a modular, highly efficient, and environmentally friendly alternative to conventional odor treatment technologies. With capacities up to 500 m3/hr, it is one of the most advanced solutions available today.
Built on proven principles and engineered for reliability, AWA OCS provides powerful and consistent removal of H2S and a wide range of municipal odor compounds – making it the ideal solution for modern wastewater infrastructure.
How Does It Work?
The AWA OCS system uses a Bio-Trickling Filter (BTF) process driven entirely by natural, biological oxidation. This ensures highly efficient odor removal while keeping operating costs extremely low.
Biological Absorption & Oxidation
As contaminated air enters the system:
- Odorous compounds transfer from the gas stream into a trickling liquid film
- Specialized microorganisms attached to the media rapidly oxidize H2S and other gases.
- These compounds are converted into harmless, odorless by-products
- Trickling effluent then carries the by-products out of the system
The process is continuous, self-sustaining, and entirely chemical-free – making it both economical and eco-friendly.
Engineered for Performance
The internal media and flow channels are designed to maximize contact between air, moisture and microbial biofilm:
- Engineered airflow pathways ensure uniform distribution across the reactor
- High-surface-area media supports dense microbial populations
- Controlled turbulence enhances mass transfer and improves breakdown of odorous gases
- Stable performance is achieved even at high mass loading rates
- Residence time as low as 3 seconds can still deliver exceptional removal efficiencies
This design ensures long-term, predictable performance – even under heavy odor loads.
Key Features & Engineering Advantages
Optimized Airflow Dynamics
Engineered channels eliminate channeling and ensure every portion of the media receives uniform airflow – improving overall odor removal efficiency.
High Surface Area Media
Supports large microbial colonies, enabling treatment of high H2S concentrations with minimal footprint.
Low-Power, Low-Cost Operation
The Bio-Trickling Filter process uses a biological mechanism instead of chemicals, helping facilities achieve the lowest operational cost in the odor-control category.
No Recirculation Required
Simplified hydraulic design means fewer pumps, reduced water use, and lower maintenance.
Advanced Automation
Equipped with state-of-the-art-PLC-HMI control, including sensors for H2S, pH, and flow monitoring – making operation reliable and user-friendly.
Corrosion-Resistant Construction
HDPE tanks, MSEP skid, and heavy-duty components ensure long product life and robust performance in harsh wastewater environments.
System Components
The AWA OCS comes as a fully engineered, modular unit including:
- Main HDPE Tank with integrated bio media fitting
- CF Type Blower for continuous biological aeration
- Submersible Pump for liquid distribution
- PLC-HMI Automation Panel for outdoor operation
- Instrumentation (H2S, sensor, pH meter, flow meter) for real-time monitoring
- Structural MSEP Skid for easy installation and transport
Each system is factory-assembled, tested, and optimized for rapid installation.
Why Facilities Choose AWA OCS
Wastewater plants, pumping stations, and sewer networks trust AWA OCS because it delivers:
- High and consistent H2S removal using natural biological processes
- Minimal operating and maintenance costs
- Lower energy consumption than any chemical or mechanical odor treatment system
- Simplified operation with rugged automation and instrumentation
- Environmentally friendly odor treatment without chemicals
Engineered for continuous, year-round operation, AWA OCS delivers reliable odor elimination even under fluctuating conditions or high-load scenarios.
Upgrade Your Odor Control Strategy
Uncontrolled odors can impact community relations, employee safety, and regulatory compliance. The AWA OCS Bio-Trickling Odor Control System offers and advanced, economical, and sustainable solutions designed for the future of wastewater treatment.
Whether for pump stations, STPs, sewer networks, or industrial odor sources, AWA OCS provides stable, dependable performance with the lowest total cost of ownership.
