H2S emissions Articles
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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 the second ...
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Seasonal and influent characteristic effects on hydrogen sulfide generation at a water reclamation plant
Correlations between sulfide generation and seasonal influent wastewater characteristics were identified based on a long-term monitoring program in summer and winter at a water reclamation plant. During summer, the emission rates of hydrogen sulfide (H2S) from the liquid treatment processes increased substantially compared to those during winter due to the increased wastewater temperature. The ...
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Case Study - Pilot-Scale Mitigation of Methane and H2S Emissions
Stratus was demonstrated to intercept, capture, and oxidatively treat methane and reduced sulfur emissions at the pilot-scale under site conditions. Reduce odour and GHG emissions by 70-100% Emssion compounds oxidatively converted to non-volatile species ...
By H2nanO
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Study of diffuse emissions in the WWTP of Arazuri - Case Study
LOCATION Pamplona, Spain SOLUTION Industrial perimeter & Odours SECTOR Smart Environment PRODUCT Kunak AIR A10 Challenge For the last few months, we have been collaborating with the management body of the Arazuri wastewater treatment plant (EDAR of the Pamplona District) to implement a system for measuring environmental variables, improve decision-making and reduce the impact that bad ...
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Sulfide emissions in sewer networks: focus on liquid to gas mass transfer coefficient
H2S emission dynamics in sewers are conditioned by the mass transfer coefficient at the interface. This work aims at measuring the variation of the mass transfer coefficient with the hydraulic characteristics, with the objective of estimating H2S emission in gravity pipes, and collecting data to establish models independent of the system geometry. The ratio between the H2S and O2 mass ...
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H2S Emissions Control at Geothermal Plants
The LO-CAT® II process is used to control H2S emissions and reduce odors at geothermal power plants. Geothermal steam, considered to be a clean and environmentally friendly source of energy, is produced when water seeps into high temperature, high pressure formations below the earth's surface. The steam is brought to the surface through production wells and then expanded through a ...
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H2S Oxidation and Sulfur Recovery
Lubrizol’s facility in LeHarve, France produces a lube oil additive via a batch reaction that uses elemental sulfur as a reactant and produces H2S as a byproduct. Lubrizol selected Gas Technology Products LO-CAT® II Hydrogen Sulfide Oxidation Process to sweeten H2S emissions and recover sulfur. The LO-CAT II system was chosen for its ability to handle the process variation in H2S ...
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Controlling H2S Emissions from Landfill Gas
A major US waste handling company operates a large landfill in Florida, and in 1992, when Hurricane Andrew struck southern Florida, the landfill saw a huge increase in the amount of C&D waste. Shortly after this, the levels of H2S started dramatically rising. This company evaluated several technologies for the removal of H2S, which was estimated to be as high as 5000 ppmv, with up to 2-3 ...
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Influence of relative air/water flow velocity on oxygen mass transfer in gravity sewers
Problems related to hydrogen sulfide may be serious for both network stakeholders and the public in terms of health, sustainability of the sewer structure and urban comfort. H2S emission models are generally theoretical and simplified in terms of environmental conditions. Although air transport characteristics in sewers must play a role in the fate of hydrogen sulfide, only a limited number ...
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NUMERICAL SIMULATION OF THE BURNING CHARACTERISTICS OF THERMALLY-THICK BIOMASS FUELS IN PACKED-BEDS
Biomass fuels are being increasingly used for domestic heating and power generation to cut down the net CO2 emission to the atmosphere. In most cases, those fuels are thermally-thick under packed-bed combustion conditions. In this paper, a doublemesh numerical scheme is proposed and implemented to simulate the detailed combustion processes for a biomass fuel with sizes ranging from 5 mm to 50 ...
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Innovative approach to centrate nitrification accomplishes multiple goals: nitrogen removal and odour control
In 2001, the City of Phoenix, Arizona (USA) committed to the conversion of the existing high-rate anaerobic digestion process at the 8.9 m3/s 91st Avenue Wastewater Treatment Plant (WWTP) to a multi-phase process (acid/methane, mesophilic/thermophilic) to optimise existing digestion capacity and achieve Class A biosolids. The improved solids reduction is anticipated to double the ammonia load in ...
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Case study - chroma S Sulfur compounds analysis (H2S and CS2, 0/300ppm) for emission application in a paper mill
Paper mills use large quantities of sulfur substances in particular in the process of cellulose burning (Kraft cooking). CS2 and H2S emissions are a real problem for the environment (toxicity, odors...). Nowadays, emissions are submitted to regulations (Directive n° 2001/81/EC of European Parliament and Council October 23, 2001) and factories must respect these rules by installing filter or ...
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Recovery Costs Less
Bal K. Kaul, Ajit Sapre and Lei Zhang, ExxonMobil Research and Engineering Co. and Daryl Musselman and Surajit Roy, Quest Air Technologies, describe a new low cost H2 recovery process. Hydrogen recovery from fuel gas and hydrogen containing purge gas streams in refinery and chemical processes offers many potential benefits including process uplift, reduced hydrogen costs, avoidance of H2 plant ...
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Project for Mixing and Neutralising Hazardous Waste in Santiago De Chile - Case Study
BION has successfully carried out the elimination of poisonous and corrosive gases (H2S and Ammonia), as part of the project for mixing and neutralising hazardous waste in the company Hidronor, Gestión y Tratamiento de Residuos (Management and Waste Treatment), which was developed in the town of Noviciado close to the international airport Arturo Merino Benitez de Santiago de Chile. Its ...
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Solidification / Immobilisation of hazardous waste for subterranean storage
The use of subterranean salt mines for the final storage of inorganic hazardous waste is state of the art in Germany, and in fact most other European countries. However, the technical requirements to prepare the waste in an appropriate way are quite challenging. Over ten years ago econ supplied a plant to a salt mine in eastern Germany. The plant uses econ’s unique batch-wise working mixing ...
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Biodegradation of hydrogen sulphide by inoculated Rhodococcus sp.zw11 in a pilot-scale biotrickling filter
A strain of autotrophic micro-organism, Rhodococcus sp.zw11, was isolated from pharmaceutical wastewater containing hydrogen sulphide (H2S). The shape, physiological and biochemical characteristics and oxidation capacity of Rhodococcus sp.zw11 were studied, and the effect of inlet concentration and volumetric loading of H2S on the removal efficiency was evaluated by the biotrickling filter ...
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Common Treatment Technologies for Inorganics in Ground Water, Surface Water, and Leachate
It may be necessary to know other subsurface information to remediate inorganics in ground water, surface water, and leachate. Treatability studies are usually necessary to ensure that the contaminated ground water can be treated effectively at the design flow. A subsurface geologic characterization would be particularly important to characterize the effects of adsorption and other processes of ...
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ENER-CORE Power Station at Attero Landfill Schinnen, Holland - Case Study
THE CHALLENGE: Attero, one of the leading waste management companies in the Netherlands and producer of green gas, had a closed landfill in Schinnen, Holland, which was producing low quality gas with a methane content below 30% which conventional gas turbines could not efficiently operate on. Attero sought a technology that could effectively deal with low methane gases. THE SOLUTION: The 250kW ...
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Facilitating compliance with consent decree requirements using an EMIS
In late 2008, T3, a division of Trinity Consultants, developed an environmental management information system (EMIS) to manage “near real-time” emissions data at a petroleum refinery. The system is designed to support Consent Decree requirements for compliance demonstrations with air quality regulations at the facility. Functionality delivered includes advanced data gathering, ...
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Wastewater-Solids Dewatering Odor Control - Case Study
Background The Milan Wastewater Treatment Plant, located just south of Moline, Illinois, is a 1.7 MGD (6,434 m3/day) activated sludge facility with an average wastewater flow of 700,000 gpd to 800,000 gpd. This facility dewaters primary sludge using a belt filter press (Figure 1). The press operates an average of three times per month, 8 hours per day at a pump rate of 100 gpm. The sludge is ...
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