odor sampling Articles

  • White Paper - Uniqair, Purdue University Odor Lab Develop Odor Sampling Procedure

    New Odor Sampling Procedure for high humidity air flow from dryers/coolers A new odor sampling procedure with nitrogen dilution has been developed by Uniqair and Purdue University’s odor lab for odor evaluation of high humidity airflow from petfood dryers, extruder air conveyer (wet cyclones) and coolers.  The sample bags will be pre-filled with a specific quantity of ...


    By Uniqair Technologies Ltd.

  • Reducing Odor and VOC Emissions

    The Montgomery County Regional Composting Facility (MCRCF) in Silver Spring, Maryland is designed to process 400 wet tons/day of lime amended biosolids from the Blue Plains Wastewater Treatment Plant (WWTP) in Washington, D.C. Recently, political pressures forced operations to cease at the MCRCF. Although the aerated static pile composting plant’s fate has not been completely decided, its owner, ...


    By BioCycle Magazine

  • Odor Control Advances at Composting Facility

    The Rockland County (New York) Cocomposting Facility began operations in February, 1999, processing biosolids from the five publicly owned treatment works (POTWs) in the county. The Rockland County Solid Waste Management Authority (RCSWMA) owns the facility, but contracted with Waste Management of New York to design, build and operate (DBO) the 110 wet tons/day agitated bin composting facility ...


    By BioCycle Magazine

  • Odor Control System Addresses Community’s Complaints

    The Customer: The Water Pollution Control Authority (WPCA) of the City of Bridgeport, Connecticut, operates two wastewater treatment facilities and maintains the city’s sewer system. The Customer’s Needs: After years of operating successfully in the community, the City of Bridgeport’s WPCA developed an odor problem at its East Side ...

  • Biotreatment of Odors from the Zimpro Sludge Conditioning Process

    Management of odor emissions generated during thermal sludge conditioning is a well known disadvantage of the “Zimpro” process. Traditional methods of using chemical oxidation and high temperature destruction result in the formation of secondary products, such as chlorine gas, organic halocarbons or nitrogen oxides. In this study, biotrickling filter technology was evaluated at the Villa Hills ...


    By PRD Tech, Inc.

  • Odor fighter`s job really does stink

    Robert Bowker"s job stinks, and he known it. Bowker is one of handful of odor control engineers in the country. He visits sewage treatment plants around the world and recommends ways to relieve the stench. This week he is visiting Concord"s plant. Vowker grew up in Maine and received a civil engineering degree from the University of New Hampshire before earning a msater"s of environmental ...


    By Bowker & Associates, Inc.

  • Pilot-Scale Biofilter Test for Treating Zimpro Odors

    The thermal sludge conditioning process of U.S. Filter/Zimpro Corporation, Rothschild, Wisconsin (Zimpro process) is primarily used to improve dewatering characteristics of the waste sludge. The process entails a partial breakdown through oxidation and hydrolysis of complex, high molecular weight organic compounds, such as, proteins, fibers, carbohydrates, and fats. The partial breakdown of ...


    By PRD Tech, Inc.

  • Fitting Into the Neighborhood: Operating by Progressive Odor Management Plan

     Operating by Progressive Odor Management Plan Why would anyone build an $11 million composting facility designed to process an average of 130 tons/day of feedstocks less than one mile from luxury homes, a new high school, a golf course, fast food restaurants, a grocery store, and in an area with a vivid memory of a compost site that impacted the neighborhood and shut down due to odor ...


    By BioCycle Magazine

  • Odorant screening and possible origin analysis of odor episodes in one reservoir in northern China

    Odorous drinking water problem occurred repeatedly in one city in northern China in recent years. The uniqueness of this odor episode lay in two aspects: (1) the odorous chemicals were quite different from common odorants, such as geosmin and 2-MIB; and (2) it occurred repeatedly in different seasons during a time span of more than 2 years. The screening of odorants was the first and one of ...


    By IWA Publishing

  • Hydrogen Sulfide Continuous Emission Monitoring of Odor Control Systems

    ABSTRACT This paper discusses the use of the Sycamore Continuous Emissions Monitor (CEM) for monitoring Hydrogen Sulfide Gas concentrations within odor control systems. The CEM is configurable as a single, two or three point system and can measure from 5 ppb to 2 PPM, 0.1 – 20 PPM, and 0 – 200 PPM and is designed for monitoring of scrubbers, carbon adsorbers, biofilters and biotrickling ...

  • Impact of Lime Dose and Mixing Quality on Odor Generation by Lime-Stabilized Biosolids

    ABSTRACTOdor generated from lime-stabilized biosolids with various lime doses and mixing regimes was studied during two bench scale experiments over four weeks of storage to determine the correlation between the lime stabilization process and odor strength. For the first bench scale experiment, dewatered solids were mixed with various lime doses (4.5% and 11.7% by wet weight) under various mixing ...

  • Controlling odors from creosote utilizing foam-based technology

    From approximately 1910 until the mid-1950s, a creosote plant operated on a 50 acre site in Manville, New Jersey. During its operation, the wood treatment facility treated railroad ties with creosote and discharged the excess creosote via canals to two waste lagoons located on the site. After treatment, wood was stored in areas of the site where excess creosote dripped onto surface soils and ...


    By Rusmar Inc.

  • Effects of Anaerobic Digester Sludge Age on Odors from Dewatered Biosolids

    Dewatered sludge cakes from bench scale anaerobic digesters operated at mesophilic temperatures and solids retention times (SRT) ranging from 10 days to 40 days were evaluated for their sulfur odor generation potential. Extracellular Polymeric Substances (EPS) extraction for digested sludge samples was also carried out. Static headspace sulfur gas analysis was successfully used to compare ...

  • 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 ...

  • Helping Laurel Asphalt to Fight Foul Odors and Be Good Neighbors

    One of the unavoidable byproducts of the asphalt production process is a mixture of volatile hydrocarbons, mercaptans, hydrogen sulfide, and heat, which may cause a unique mixture of foul odors. When this happens, many asphalt producers have to contend with neighboring residents – often homes and businesses – that bring their odor complaints to both the media and local town-hall ...


    By OMI Industries (OMI)

  • Odor control system addresses community’s complaints - case study

    The Customer: The Water Pollution Control Authority (WPCA) of the City of Bridgeport, Connecticut, operates two wastewater treatment facilities and maintains the city’s sewer system. The Customer’s Needs: After years of operating successfully in the community, the City of Bridgeport’s WPCA developed an odor problem at its East ...

  • Aerating recycled water on mushroom composting sites affects its chemical analysis and the characteristics of odor emissions

    Recycled water (RW) containing compost leachate can be a potent source of foul odor on mushroom composting sites. Samples of RW were repeatedly collected from storage tanks and pits of 14 mushroom composting sites in England and Ireland. Relationships between the effects of submerged aeration of the RW, the chemical and microbial characteristics of the RW, and the odors emitted were investigated. ...

  • James river treatment plant meets odor control commitments with help from GTI covers

    The James River Treatment Plant is one of nine major treatment plants operated by the Hampton Roads Sanitation District (HRSD). The James River Treatment Plant is bordered on one side by the James River, and by houses and a park on the other. Although the James River Treatment Plant had installed odor control systems to capture and treat foul air from parts of the plant, its conventional aeration ...

  • The effect of direct addition of iron(III) on anaerobic digestion efficiency and odor causing compounds

    The role of iron addition to sewage sludge prior to anaerobic digestion was evaluated to determine the effect of iron on digestion performance and generation of odor-causing compounds. Hydrogen sulfide (H2S) and volatile organic sulfur compounds (VOSCs) were the odorous gases evaluated in this study. Samples were obtained from seven municipal wastewater treatment plants (WWTPs), and batch ...


    By IWA Publishing

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