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Sewervac   Sewervac new mathematical modeling tool for the sulfur ion allows to model the routes of the sulfide ion to identify at which points we will have the highest sulfide’s concentrations and consequently hydrogen sulphide (H2S), the conversion rates of sulfur to hydrogen sulphide, the origin of the hydrogen sulphide peaks and what it can be done to avoid it.

   The continuous investment in R+D has allowed the company Sewervac to present 2.0 version, developing software that provides a much more graphic and intuitive data output.

R. Mateos, J. Chambó *

   Sewervac Ibérica S.L., Carrer de Folch de Cardona 2, 46017 Valencia (Spain). Email: ricardo@sewervac; *pepe@sewervac.es

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   During 2018, Chile began to generate quality standards for offensive odors. The priority of the authority was defined by type of activity and the historical number of complaints per year raised by citizens for every type of industry. From the analysis, five industries were selected for the first stage, among which the Chilean Kraft pulp industry was part of, activity representing approximately 2% of world production.

   Facing complaints, the lack of development planning and land use, the absence of quality standards the null international and bibliographic experience of how to proceed with odor management in this type of industry contributed to creating the necessary need to generate online, integrated, prompt response tools that could allow the odor impact to be managed efficiently in real time.

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new epa calpuff version   The USEPA approved in July 2016 an update of CALMET and CALPUFF from V5.8.4 to V5.8.5. This update includes code changes described in Model Change Bulletin H and include fixes to bugs in the implementation of PRIME downwash, along with updates to eliminate specific compilation and list file errors. Three years later after the last update approved by the US EPA, this second revision is still falling short for odour dispersion modelling.

   The CALPUFF Modeling System is a non-steady-state puff dispersion model that simulates the effects of time- and space-varying meteorological conditions on pollution transport, transformation, and removal. According to the US EPA CALPUFF can be applied for long-range transport and for complex terrain.

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