Odour Control in Wastewater Treatment: Sustainable Solutions for Cleaner Air and Corrosion Protection

 Controlling odours is a critical concern in modern wastewater treatment. From health impacts on plant personnel to complaints from nearby communities, the challenge of odour control in wastewater treatment demands innovative, sustainable solutions. At AQOZA, we focus on delivering systems that not only neutralize foul odours but also guard infrastructure against corrosion.



Understanding the Challenges

Wastewater treatment facilities often emit pungent gases such as hydrogen sulfide (H₂S), ammonia, volatile organic compounds (VOCs), and mercaptans. Due to their low solubility, these unpleasant and potentially toxic gases escape into the atmosphere, creating severe air quality issues.

Additionally, these odorous emissions can contribute to highly corrosive environments. Acidic gases, moisture, and airborne contaminants accelerate the degradation of metal, concrete, and electrical components leading to costly maintenance and equipment failures.

AQOZA’s Approach to Odour & Corrosion Protection

Advanced Filtration Units

  • Activated Carbon Adsorption
    AQOZA offers adsorption systems using highly effective activated carbon media such as the coconut-based CASORB HS1 and water-regenerable CASORB HS2 that can eliminate H₂S, VOCs, and other odorous compounds with efficiencies of 99% and above. These media are not only durable but also environmentally responsible, with options to wash and reuse.
  • Biological Oxidation Systems
    Biological approaches like bio-scrubbers or bio-trickling filters provide long-term cost-effective odour removal. These systems oxidize odorous compounds through microbial action in compact packed towers, achieving removal rates up to 99.9% when coupled with adsorption.

Tailored & Hybrid Systems

Depending on the plant capacity and local requirements, AQOZA recommends either standalone adsorption systems or hybrid combinations of biological and carbon-based technologies. For larger facilities, a two-stage system ensures continuous, reliable odour removal while minimizing operational costs.

Passive & Active Solutions

  • Passive Units like the Odovent MX harness natural ventilation to filter odours in manholes and small pumping stations without power input. These are ideal for remote or low-maintenance site
  • Active Units utilize extraction fans to actively pull odorous air into filtration systems, offering high-efficiency odour removal (≈99.9%) across a wide capacity range.

Delivering Safe & Sustainable Outcomes

AQOZA’s odour control systems not only clean the air but also preserve the integrity of infrastructure. By neutralizing harmful gases before they corrode metal and concrete, they safeguard assets like tanks, pumps, electrical conduits, and control rooms.

Our solutions are designed with low operating costs, compact footprints, and fast installation in mind. In-house media manufacturing ensures cost efficiency and quality control not to mention, eco-friendly disposal or regeneration options.

Proven Results

AQOZA’s systems have yielded success across industrial and municipal settings. One residential community, for example, eliminated odour complaints via a gas-phase filtration system that removed over 99% of odorous compounds and maintained performance over time.

Another case at an airport STP demonstrated how our system reduced discomfort for staff and visitors and protected infrastructure through efficient odour and corrosion control.

AQOZA’s commitment to Odour Control In Wastewater Treatment goes beyond comfort it’s about creating resilient, sustainable systems that enhance air quality, protect infrastructure, and build community trust. To explore tailored odour control solutions for your facility, reach out to our specialists and let’s design together.

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