Showing results for: odor monitoring Articles
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Continuous Monitoring of Odourous Compounds in Waste Water Treatment Plants - Sensory approach or Physico-chemical solution?
Odour measurement is a demanding topic to manage due to the complexity of existing solution and the methodology ...
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Continuous Monitoring of Odourous Compounds in Waste Water Treatment Plants - Sensory approach or Physico-chemical solution?
Odour measurement is a demanding topic to manage due to the complexity of existing solution and the methodology used. Market needs When an odour is perceived, the first approach is to try to identify its origin. This approach requires solutions able to track very low concentrations due to air dilution effects. Several solutions can be provided: Sensory approach Physicochemical approach ...
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Improvement of olfactometric measurement accuracy and repeatability by optimization of panel selection procedures
The EN 13725:2003, which standardizes the determination of odour concentration by dynamic olfactometry, fixes the limits for panel selection in terms of individual threshold towards a reference gas (n-butanol in nitrogen) and of standard deviation of the responses. Nonetheless, laboratories have some degrees of freedom in developing their own procedures for panel selection and evaluation. Most ...
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Odour, how to measure?
As Aerox we offer our clients sustainable solutions for industrial odour emissions. Together with our customers we solve the nuisance resulting from these emissions. We therefore also regularly get questions about odour, what exactly this is and how you can measure it. Measuring of smell The objective measuring of odour is not easy. Odour in itself is a very complex matter to quantify and ...
By Aerox B.V.
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Odour Management System for Sewage Treatment Works - Case Study
Application To provide an Odour Management System (OMS) to comply with specified odour control measures and exceed requirements of: The projects Environmental Assessment Statement The projects planning consent Removal of 99% of gaseous Hydrogen Sulphide Removal of 99% of total Mercaptans Removal of 99% of ammonia gases & vapours. Achieve a boundary level of 5 OUE/m Continue reading ...
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Comparison of different measurement methods of odour and odorants used in the odour impact assessment of wastewater treatment plants in Poland
The aim of this study was to compare sensory and analytical methods used to measure odour and odorants concentrations for odour impact assessment on municipal wastewater treatment plants (WWTPs). A range of sources and odour or odorants concentrations were used to compare the methods. Four different odours and odorants measurement methods were compared: field olfactometry using Nasal Ranger® ...
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Validation of regulatory micro-scale air quality models: modelling odour dispersion and built-up areas
Gaussian and Lagrangian model runs are evaluated in comparison to field data from the Odour Release and Odour Dispersion (OROD) project and to wind tunnel data from the Mock Urban Setting Test (MUST). Different statistical metrics are discussed. The results illustrate once again that a good model performance is strongly dependent on the model input (e.g., terrain data, roughness length). ...
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Estimating odour impact range of a selected wastewater treatment plant for winter and summer seasons in Polish conditions using CALPUFF model
Odour emission from wastewater treatment plants (WWTP) is a common cause of odour nuisance to neighbouring areas. The analysed object was mechanical biological WWTP designed for 1,200,000 population equivalent. Collection of the samples was carried out in accordance with the methodology described in VDI 3880 and PN-EN 13725 during the rainless weather. Odour concentration measurement was made ...
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Odour reduction strategies for biosolids produced from a Western Australian wastewater treatment plant: results from Phase I laboratory trials
This study investigated sources of odours from biosolids produced from a Western Australian wastewater treatment plant and examined possible strategies for odour reduction, specifically chemical additions and reduction of centrifuge speed on a laboratory scale. To identify the odorous compounds and assess the effectiveness of the odour reduction measures trialled in this study, headspace ...
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How are landfills benefiting from incorporating community engagement into their odour management strategies? Let’s find out.
First, let’s address some well-established facts related to solid waste management and odour. s widely known that waste generation is increasing at astronomical rates worldwide. Populations are growing closer to waste management operations that were previously isolated. Estimates of the next few decades show no indication of municipal solid waste generation slowing down. By 2050 ...
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High Rate Biological Odour Control System - Case Study
About the Project Biorem has conducted a successful demonstration of high rate odour control at Preston Wastewater Treatment Plant in Cambridge, Ontario over the last three years. The system treats exhausts from primary clarifier and intermediate pump station. A combination of biotrickling filtration (BTF) and biofiltration (BF) processes was used in a novel horizontal flow configuration. XLD, a ...
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Extended CSO control storage: what could possibly go wrong?
The Thames Tideway Tunnel (TTT), is one of the main components of the London Tideway Improvements Programme, designed to capture combined sewer overflows (CSOs) which currently discharge untreated combined sewage into the tidal river Thames. CSO discharges would be stored in the tunnel until there is capacity at Beckton sewage treatment works (STW), to accept, for treatment, pumped sewage ...
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Real-time odour analysis & complain management
Odour is the perception of smell; it may range from being unpleasant (like the rotten smell of garbage) to pleasant (fragrance). Odours, pleasant or unpleasant; are produced by inhaling air-borne volatile organic and inorganic compounds. Generally, people do not perceive other common air pollutants, even if the exposure limit concentrations are exceeded. Lack of odour analysis adds on to that. On ...
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Odour Control at Pesticide Facilities: Eliminating volatile compounds
Chemical formulation plants are susceptible to emissions of unpleasant and malodorous volatile compounds, a fact which makes the implementation of efficient odour control measures essential. North-western Spain is home to one of the country's oldest industrial sites for the manufacture of phytosanitary products, with some facilities located relatively close to populated areas. Recently, the ...
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Publications and Presentations by Material Matters, Inc Personnel
Material Matters has an extensive collection of papers and presentations available online. Topics includes data management, odor assessment, nutrient management, etc.https://materialmatters.com/publications.html It's a Matter of ResultsMaterial Matters was founded in 1997 on the premise that client needs are the highest priority. We are an environmental consulting firm that offers a wide range ...
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Control of urine odor in different sanitation practices and its implication on water saving
To avoid odor in sanitation systems, urine is usually diluted with water (flushed), which leads to high water consumption. The smell may remain in sanitation systems if the systems are not well managed, or if the urine is flushed with insufficient amounts of water. In this study, using the standard threshold odor number (TON) measurement as an indicator of urine odor, the effects of the pH ...
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Monitoring odor dispersion at the world’s largest WWTP thanks to Cairnet & Cairsens - Case Study
Customer: Wastewater treatment Localisation: United States of America Installation: Close to the ponds and property line for the neighbourhood Function: Measuring odour emissions (H2S) Location Background This wasterwater and stormwater treatment plant is one of the largest in the world. It treats an average of 1.3 billion gallons (6 million m3) of wastewater each day- 500 billions gallons (2.2 ...
By ENVEA
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Release behavior of odor contaminants derived from Microcystis aeruginosa in rivers and a non-strict anaerobic aqueous system
Data were collected and reviewed to assess the odorous contaminant status of drinking water sources for Hangzhou City, China. β-Cyclocitral, β-ionone, dimethyl trisulfide, 2-methylisoborneol, and geosmin were targeted odorants. Results indicate that β-cyclocitral was the main contaminant in source waters as it was most frequently detected and occurred at higher concentrations compared to ...
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Metrology and on-line gas chromatography on sulfur compounds in natural gas
Introduction With increased scrutiny and regulation on Natural Gas (NG) pipeline operators and distribution companies to accurately measure, odorize and report sulphur levels in the product the need is greater than ever for a precise way to perform the measurement. The on-going development of Gas Chromatographs (GC) with sulfur specific detectors, coupled with an increased need for ...
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Comparison of different approaches for odour impact assessment: dispersion modelling (CALPUFF) vs field inspection (CEN/TC 264)
Odour impact assessment has become an important environmental issue. Different approaches can be used in order to evaluate the odour impact on receptors, and therefore to regulate it. Among the different possible regulation approaches, the use of dispersion modelling is suggested or required by several national or regional legislations. The wide diffusion of this approach is probably due to the ...
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