Tag: Odor Control

  • Scentroid CTair: Enhancing Odour Monitoring in High River, Alberta

    Scentroid CTair: Enhancing Odour Monitoring in High River, Alberta

    It brings us great pleasure to inform you that the NRCB has successfully installed the Scentroid CTair device in the town of High River to tackle persistent odour issues. At Scentroid, we pride ourselves on being a top-tier provider of innovative environmental solutions. Our advanced technology aims to transform the way the community detects and manages unpleasant smells.

    At Scentroid, we understand the importance of addressing odour-related concerns effectively. That’s why we developed the CTair unit, a portable and powerful device that has recently made its way to High River. The device, which is as small as a shoebox, can be mounted on a pole or wall with ease. and is powered by a solar module, making it highly versatile when it comes to monitoring locations.

    The NRCB itself aims to achieve two primary goals with the CTair unit in High River. Firstly, they sought to develop a deeper understanding of the relative contribution of odour-causing parameters from various sources surrounding the town. By comprehending the complexity of odour issues, the NRCB can implement targeted strategies and make High River an even more pleasant place to live.

    The NRCB also aimed to determine the impact of management practices at confined feeding operations on odour emissions. The CTair unit’s specialized sensors can now measure air quality parameters known for their odour potential, including reduced sulphur, ammonia, and volatile organic compounds. This data is crucial for evaluating the effectiveness of different practices and implementing measures that minimize odour emissions effectively.

    One of the remarkable features of the CTair unit is its ability to determine the source and cause of odours. By analyzing the parameters measured and considering wind speed and direction, facility managers can identify possible odour sources and take prompt action. With its portable design, Ctair can effortlessly be relocated to detect possible sources of odour and evaluate their effects.

    Wondering how the CTair unit works and what it measures? Our advanced technology utilizes specialized sensors to measure the air quality parameters contributing to odour. While electronic instruments cannot directly measure odour levels, our innovative odour integration module uses artificial intelligence to combine the concentration data from individual parameters into an odour index. This index provides a numerical value representing the expected odour experience based on the combination of parameter levels.

    As a leading provider of odour monitoring solutions, we differentiate the CTair unit from existing systems in High River. While the CTair unit and the portable air monitoring laboratory measure reduced sulphur compounds, their methodologies differ. The CTair unit directly measures reduced sulphur using electrochemical sensors, whereas the portable air monitoring laboratory measures it as the difference between oxidized sulphur concentrations. Additionally, the CTair unit goes beyond measuring ammonia and volatile organic compounds, providing a more comprehensive understanding of odour dynamics.

    In conclusion, installing the Scentroid CTair unit in High River marks a significant milestone in odour monitoring and management. Our team at Scentroid is dedicated to utilizing our knowledge and cutting-edge technology to effectively tackle any concerns related to odours.

  • City of Los Angeles Pilot Tests for Improving BioTrickling Filter Performance

    City of Los Angeles Pilot Tests for Improving BioTrickling Filter Performance

    The LA Sanitation owns and maintains over 6,700 miles of sewer. In order to remove odour and other related constituents from the collection system, it operates 3 nearby Air Treatment Facilities. The ATFs utilize Biotrickling Filters (BTFs) technology followed by carbon adsorbers as polishing units. The BTFs at the ATFs consist of two (2) media levels. Both media levels use the liquid from the BTF’s sump for irrigation.

    In order to improve the BTFs performance, a pilot test started in September of 2015. The goal was to evaluate and improve biological process performance in the Biotrickling Filter. This was measured In terms of its odour and specific compound removal efficiencies under different pH irrigation conditions. The removal efficiencies of BTFs for Hydrogen Sulfide (H2S), speciated Volatile Organic Compounds (VOC) and Total Non-Methane Hydrocarbon (TNMHC) were measured and recorded for different pH levels during this test.

    Biotrickling Filters Testing Procedures and Protocols

    Knowledge and information gained from the results of these tests will be used to optimize the BTF operational procedures followed at the City’s collection system Air Treatment Facilities (ATFs) and extend the life of the polishing carbon units installed down-stream from the BTFs by reducing the inlet VOC/TNMHC load and the potential capacity taken up by the presence of these compounds.

    The BTF test units were installed on the top of a primary battery at the Hyperion Water Reclamation Plant. Foul air from the primary battery was collected and pushed to a manifold where it was distributed to the BTFs.

    The test units were two 3-foot diameter Biotrickling Filter vessels. They were installed in series for this test to simulate levels of media in one unit at actual BTF. Each BTF vessel contained 3-feet of Matala polyurethane media with a single head distribution nozzle. These nozzles irrigate the top of the media with liquid from the sump of the BTF. Each BTF also contained a 3-foot sump, make-up water, overflow drain with p-trap, re-circulation pump, nutrient tank and nutrient pump. Testing parameters including Empty Bed Residence Time (EBRT) were adjusted in the test units to also simulate BTF conditions.

    Biotrickling Filters Testing Conclusions

    Foul air from the primary channel entered the 1st Biotrickling Filter, was treated, and then directed to the 2nd BTF. After passing through the second BTF, treated exhaust air was discharged, returning flow back to the primary battery.

    Dampers were installed on the inlet of each BTF to control the airflow and thereby the EBRT for each BTF. The water irrigation system was then supplemented with nutrients to keep the microorganisms healthy and active.

    The inlet and outlet concentrations of H2S and TNMHC of each BTF, the pH of the drain water and the amount of make-up water applied to each BTF were measured daily. This routine monitoring was conducted throughout this test period.

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