TSG Chile

Biogas treatment with recovery of nutrients from centrate in an outdoors high rate algal pond through algae- bacteria systems

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D_Marin   The upgrading of biogas coupled with centrate treatment was evaluated in an outdoors photobioreactor interconnected to an absorption column of CO2 and H2S from September to December 2016.

   The maximum recorded CH4 concentration in the biomethane was 94%, with total removal of H2S and removal efficiencies of CO2 ranging from 70% to 90% depending on the environmental conditions.


D. Marín, E. Posadas, R. Lebrero, R. Muñoz

Departamento de Ingeniería Química y Tecnología del Medio Ambiente. Universidad de Valladolid. C/ Real de Burgos, s/n, Sede Doctor Mergelina. CP 47011 - Valladolid

Estimation of stable-run time for Biofilter to mitigate environment pollution due to Styrene emission and other VOCs from Reinforcing Plastics industry

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reinforced fiberglass   The Fiber Glass Reinforcing Plastic Industry in Argentina has undergone a huge development. Unfortunately, only a few facilities work with appropriate abatement pollutant emission technology. That is so due to the lack of regulations and control laws in this country.

   This work describes a case study of the design of equipment to reduce styrene emissions from a filament winding and chop hoop mixed process from a factory that produces Reinforcing Plastic pipes.

C. A. Severi1, J. Galvez2 and S. Vardaro2

1-Student of Master Environmental Engineering. National University of Cuyo, Argentina.E-mail: .ar
2-Bioprocesses. Faculty of Engineering. National University of Cuyo.

Passive Deodorization in confined areas of Sewage Plants

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imagen recaj   Odor control in waste water treatment plants and pumping stations is already a priority in the integration with the neighborhood. Lately the energetic and economic optimization of deodorization has become very important.

   This article describes efficient solutions with very low operating costs for specific elements of plants, using small passive compact units, able to operate without fan, and loaded with selected impregnated activated alumina adsorbents. The results and capacity shown make this solution ideal in sludge silos, thickeners, septic tanks, sludge reservoirs and digesters, storm tanks and others, as opposed to the usual deodorization design criteria by a certain number of hourly renewals.


J.L. Recaj * and J.Balfagón

Alphachem S.L., C/ Jerez de los Caballeros 2, 28042 Madrid, SPAIN