odor impact Articles
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Release of hydrogen sulfide under intermittent flow conditions – the potential of simulation models
For engineering purposes it is especially useful to be able to predict and control sewer corrosion rates and odor impacts as well as to design effective measures aiming to reduce effects related to hydrogen sulfide formation and release. Doing so, it is important to use modeling tools that are capable of assessing variations of dissolved oxygen, dissolved sulfide and hydrogen sulfide gas ...
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Development of the Odour Impact Model as a regulatory strategy
To protect residents of a community surrounding a stationary odorous source from regular odorous episodes, regulatory agencies must have an objective basis for establishing regulations that recognises the needs of both the citizens and the offending industry. Current odour regulations based on statutory nuisance laws or the dilution to threshold principle do not meet the requirements of an ...
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Development of a novel odor measurement system using gas chromatography
This paper describes a novel odor measurement system for creating arrays of virtual chemical sensors with nonoverlapping responses using ultrahigh-speed gas chromatography with a surface acoustic wave sensor (GC/SAW). This GC/SAW system provides high-resolution twodimensional olfactory images for easy recognition of many complex odors. Separation and quantification of the individual chemicals ...
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Assessment of lagoon odor emissions before and after installation of solar-powered circulators; Myrtle Beach water reclamation facility
Introduction The City of Myrtle Beach operates a large wastewater treatment lagoon in parallel to its mechanical treatment plant located off Mr. Joe White Avenue in Myrtle Beach, South Carolina. The lagoon system occupies an area of over 45 acres. The large, odor-emitting surface area, combined with encroaching development, has resulted in complaints against the City regarding odor emissions from ...
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Pulp & Paper Mill’s #1 ASB Lagoon cleanout goes directly into Geotube containers - Case Study
Abstract: Integrated pulp & paper mill with an aerated stabilization basin built in 1969 was so full of solids that the mill was having several problems: degradation of treatment performance, inability to access aerators for maintenance, safety concerns, high energy usage, severe short circuiting. The decision was made that #1 Lagoon must be cleaned out. Evaluation of all types of removal, ...
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Countering Wastewater Odor Complaints on a Localized Level
In countless counties and towns throughout the U.S., there are ongoing new stories about wastewater treatment odors negatively impacting nearby residents and businesses. From Sioux City, Iowa to Tucson, Arizona, there has been a rise in odor complaints that often make their way into the media, as well as become contentious agenda items in many town council meetings. As we have highlighted ...
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Odor and Heat Contained Thanks to GTI Cover
The Customer: A major American frozen food manufacturer with worldwide distribution. The Customer’s Needs: The frozen food manufacturer required a cover solution for its wastewater treatment system that would reliably contain odors and retain heat. The Solution: Geomembrane Technologies Inc. (GTI) designed, fabricated, and installed a large gas collection cover for the frozen food ...
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Volatile Organic Compounds measurement in tropical and temperate climates: concentration levels in urban and rural areas
Rapid urbanization and economic development in past decades have led to air pollution problems such as excess of nitrogen oxides (NOx), carbon monoxide (CO) and volatile organic compounds (VOCs) and Semivolatile Organic Compounds (SVOCs). Motor vehicle exhaust, industrial emissions, chemical solvents as well as biogenic emissions are the major anthropogenic sources of VOCs. Depending on the area ...
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Case Study: Odor Abatement Solutions
Odor issues related to industrial processes are not uncommon. An odor is caused by one or more volatilized organic compounds (VOCs) that humans can perceive by the sense of smell. The challenge is that “odor is subjective, and what is sweet to some, can be a nuisance to others. In most cases the compounds that create the offensive odors are not present in sufficient concentrations to ...
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Volatile Organic Compounds measurement in tropical and temperate climates: Concentration levels in urban and rural areas
Rapid urbanization and economic development in past decades have led to air pollution problems such as excess of nitrogen oxides (NOx), carbon monoxide (CO) and volatile organic compounds (VOCs) and Semivolatile Organic Compounds (SVOCs). Motor vehicle exhaust, industrial emissions, chemical solvents as well as biogenic emissions are the major anthropogenic sources of VOCs. Depending on the area ...
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GTI’s Covers Provide Over 99 Percent Odor Capture at Sydney Water’s WWTP
The Utility: The Cronulla Wastewater Treatment Plant (WWTP) is one of 30 wastewater treatment and water recycling plants in greater Sydney, the Blue Mountains, and the Illawarra. It is owned and operated by Sydney Water, Australia’s largest water utility. The plant is located on the southern end of the Kurnell Peninsula (about 18 km [11 miles] from the city center), and treats about 54 ...
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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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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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WWTP Covers Its Grit Tanks to Help Address Odor Concerns
The Customer: The Georgetown Wastewater Treatment Plant (WWTP) located in Ontario, Canada, provides industrial and municipal wastewater treatment for the urban area in the Town of Georgetown. The plant treats approximately 17.5 ML of wastewater per day. It is sized to accommodate the wastewater treatment needs of a local dairy processing facility, the plant’s largest industrial contributor ...
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Removing Inorganic Contaminants with Arsenic Water Treatment
Inorganic contaminants in drinking water are more than just an annoyance. Arsenic is a naturally occurring carcinogen, which is known to lead to both cancer and heart failure. Arsenic is also a difficult contaminant to detect. Since arsenic is both odorless and colorless, testing has to be conducted in order to reliably identify it. Arsenic often appears in conjunction with iron and manganese. ...
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Removing Inorganic Contaminants with Arsenic Water Treatment
Inorganic contaminants in drinking water are more than just an annoyance. Arsenic is a naturally occurring carcinogen, which is known to lead to both cancer and heart failure. Arsenic is also a difficult contaminant to detect. Since arsenic is both odorless and colorless, testing has to be conducted in order to reliably identify it. Arsenic often appears in conjunction with iron and manganese. ...
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Treatment of the city of Oudenaarde (Belgium) sewage discharge canal case study
Executive Summaryc A canal responsible for carrying sewage away from the City of Oudenaarde to the Scheldt River was partially dammed in 1965 leaving an area of open water of approximately 1 hectare (600 meters by 17 meters). As the canal was only partially dammed, water from the canal continued to flow into the Scheldt River. Two large municipal sewage collection discharge pipes feed the canal. ...
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WEF/A&WMA Odors And Air Pollutants Conference March, 2010
Abstract The application of biotrickling filters (BTF) has become commonplace for the removal of hydrogen sulfide and for the reduction of odors from air emissions in wastewater treatment facilities. Operation at a low pH of 1.5-2.0 provides an environment for rapid reproduction of thiooxidans bacteria and metabolism of hydrogen sulfide (H2S). An elimination capacity in excess of 90 gm of H2S per ...
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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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Putting the HAZOP to good use!
The UK Chemical Industry has, for many years, appreciated the strategic use of Hazard and Operability (HAZOP) assessments in reducing the risks posed by their activities and sites. But what other industries can benefit from this approach? The landfill sector has just begun to demonstrate how the innovative use of the HAZOP assessment methodology can help underpin significant decisions on site ...
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