Sewer Odors Articles

  • Odor Control H 2 S / Sewer Gas Wet Scrubbing Explained

    H2S / Sewer Gas / Rotten Egg Smell Control Hydrogen Sulfide, chemical formula H2S. also commonly referred to as 'sewer gas' is frequently a nuisance problem at waste water treatment facilities - and a source of complaints from neighbors of such facilities. Additionally, H2S not only stinks, at high concentrations it incapacitates, blinds and eventually will kill if allowed to ...


    By Raschig USA Inc.

  • A Return On Investment with Bio-Augmentation

    Henderson, Louisiana is located directly in the center of what is commonly considered ‘Cajun Country.’ Right next door to Breaux Bridge, the town that is known as ‘The Crawfish Capital of the World’; our claim to fame is dealing with the crowds and traffic of that festival every spring. But, Henderson is just fine with that situation, just being the ‘bedroom ...


    By Reliant Water Technologies

  • Street Elbow Introduction

      A street elbow is a type of plumbing or plumbing connection intended to join a piece of pipe and another corner fitting. The difference between a street bend and a regular bend is the nature of the connections at each end.   A regular elbow has a female connector or FIP connection at both ends. A hub ...


    By Adamant Valves

  • 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 ...


    By IWA Publishing

  • Emission of hydrogen sulfide (H2S) at a waterfall in a sewer: study of main factors affecting H2S emission and modeling approaches

    Hydrogen sulfide (H2S) represents one of the main odorant gases emitted from sewer networks. A mathematical model can be a fast and low-cost tool for estimating its emission. This study investigates two approaches to modeling H2S gas transfer at a waterfall in a discharge manhole. The first approach is based on an adaptation of oxygen models for H2S emission at a waterfall and ...


    By IWA Publishing

  • Collection system aeration and the microbial benefits

    In late 2015 Reliant Water Technologies introduced the Wet Well Wizard, an aeration tool for the wet wells in collection systems. During 14 months of field testing the patent pending Wizard System, the primary objectives were to eliminate FOG (fat, oil and grease) caps and to reduce H2S, eliminating it if possible. All trials were proven excellent with very few changes to the product that ...


    By Reliant Water Technologies

  • Case study - Shopping center avoids litigation by resolving sewer odor problems

    Mazzei Injector Company, LLC is a recognized industry leader in gas to liquid mass transfer primarily from its proven 25 year experience with ozone applications. In addition, Mazzei has installed the same patented Venturi injector and mixing nozzle technology in many municipal and industrial wastewater systems in applications at lift stations, equalization tanks, aeration basins, activated sludge ...

  • Texas city treatment plant case study

    Performance History and Discussion Texas City selected in-Pipe Technology. Inc. to provide a collection system bioaugmentatlon program to control fats, oil and grease (FOG) and H2S odor in the sewer system. The program is also designed to reduce influent load to the wastewater treatment plant (WWTP), improve the quality of the effluent water, improve the operating efficiency and reduce ...

  • A review of sulfide emissions in sewer networks: overall approach and systemic modelling

    The problems related to hydrogen sulfide in terms of deterioration of sewer networks, toxicity and odor nuisance have become very clear to the network stakeholders and the public. The hydraulic and (bio)chemical phenomena and parameters controlling sulfide formation, emission and their incidences in sewer networks are very complex. Recent research studies have been developed in gravity and ...


    By IWA Publishing

  • GTI’s odor control system ends neighbors’ complaints - case study

    The South Dearborn Regional Sewer District in Lawrenceburg, Indiana, provides regional wastewater treatment ser vices for three cities and an international distillery. As the community grew, wastewater treatment plant managers at the South Dearborn Regional Sewer District saw an increase in complaints from neighbors about a foul smell lingering in the area. Odor complaints became a sensitive ...

  • New home with Puraflow septic system and odor complaint - Case Study

    Problem After installation of a Puraflow septic system the customer complained of odors in his yard. The contractor installed residential vent odor filters on the tank vent on the roof vents. The residential odor filters improved but did not eliminate the problem. The contractor reviewed the problem with Simple Solutions and determined that the problem was due to the ...


    By Simple Solutions Dist. LLC

  • Reduced sulfur compounds in the atmosphere of sewer networks in Australia: geographic (and seasonal) variations

    The management of odorous emissions from sewer networks has become an important issue for sewer system operators resulting in the need to better understand the composition of reduced sulfur compounds (RSCs). Gaseous RSCs including hydrogen sulfide (H2S), methanethiol (MeSH), dimethyl sulfide (DMS), carbon disulfide (CS2), dimethyl disulfide (DMDS) and dimethyl ...


    By IWA Publishing

  • Hydrogen sulfide gas emission under turbulent conditions – an experimental approach for free-fall drops

    Odor nuisance and sulfide corrosion in sewers carrying septic wastewater are accelerated at points of turbulence such as drops in manholes, but accurate methods or empirical expressions to evaluate the gas stripping rate at those particular sites are still missing. With the aim of improving the current knowledge on the influence of free-fall drops on the release of hydrogen sulfide gas, an ...


    By IWA Publishing

  • Is H2S a suitable process indicator for odour abatement performance of sewer odours?

    Odour abatement units are typically designed and maintained on H2S concentrations, but operational failures are reported in terms of overall odour removal, suggesting a wide range of malodorous compounds emitted from sewers that may not be efficiently removed by existing odour abatement processes. Towards providing greater insight into this issue, several activated carbon filters and biofilters ...


    By IWA Publishing

  • Performance of sanitary sewer collection system odour control devices operating in diverse conditions

    Controlling odours from sanitary sewer systems is challenging as a result of the expansive nature of these systems. Addition of oxidizing chemicals is often practiced as a mitigation strategy. One alternative is to remove odorous compounds in the gases vented from manholes using adsorptive media. In this study, odour control devices located at manholes were observed to determine the ability of ...


    By IWA Publishing

  • Development of a diagnostic tool: the wastewater collection network odour wheel

    The assessment of nuisance odour problems and the application of an effective odour management programme for the associated industrial activity may be achieved using a representative odour wheel and Odour Profile Analysis methodology. The odour wheel is a very useful tool for conducting odour quality control monitoring and developing a constructive dialogue regarding nuisance odours with the ...


    By IWA Publishing

  • Odours in sewer networks: nuisance assessment

    As odour nuisance can affect the quality of life, the population is more and more demanding and in many cities sewers are a critical source of odours. Both factors can lead to increasing numbers of complaints due to the odour nuisance perceived by the residents, affecting also the public image of the sewer management companies. Odours associated with sewer networks are very heterogeneous, in as ...


    By IWA Publishing

  • Impact of water source management practices in residential areas on sewer networks – a review

    Prolonged drought which has occurred everywhere around the world has caused water shortages, leading many countries to consider more sustainable practices, which are called source management practices (SMPs) to ensure water availability for the future. SMPs include the practices of water use reduction, potable water substitution and wastewater volume reduction such as water demand management, ...


    By IWA Publishing

  • SCORe-CT: a new method for testing effectiveness of sulfide-control chemicals used in sewer systems

    A new method for testing the effectiveness of chemical products for sulfide control in sewers is reported. The method, called SCORe-CT (Sewer Corrosion and Odour Research – Chemical Testing), consists of two specially designed laboratory-scale systems that mimic sulfide production in real rising main sewers, and a multi-phase and multi-facet testing protocol. The monitoring tools/methods include ...


    By IWA Publishing

  • A dynamic ventilation model for gravity sewer networks

    To implement any effective odour and corrosion control technology in the sewer network, it is imperative that the airflow through gravity sewer airspaces be quantified. This paper presents a full dynamic airflow model for gravity sewer systems. The model, which is developed using the finite element method, is a compressible air transport model. The model has been applied to the North Head ...


    By IWA Publishing

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