The 10th meeting of the working group 2 dealing with dynamic olfactometry just took place in the beautiful city of Delft, The Netherlands. By this time the work should be mostly done, but it seems that there are still some important issues to deal with. Some interesting topics such as the use of blank fields were once again left aside, but all in all, the number of items reviewed this time was comparatively higher.
The first day and part of the second day were dedicated to the discussion of sampling in olfactometry. Many of the items had been discussed before, but the text needed to be thoroughly reviewed. Mr. De Bree presented a proposal which was reviewed almost line by line. The group worked on many items related to sampling.
These world congresses are not to be confused with the other events organized by this society and named as "Olfaction & Issues". People who are interested in digital olfaction are invited to join this congress to gather the information of recent progress, share it with others and spread the information all over the world.
The company GSA counts on the last technology available for sampling and analysing odour concentration. The Colombian Norm NTC5880 is a transposition of the European Norm EN13725. Although there are other olfactometric labs in Colombia, none of them was accredited by the ISO/IEC 17025 following the NTC5880 Colombian Norm. This accreditation was granted by the national standardization body IDEAM (Institute of Hydrology, Meteorology and Environmental Studies) of Colombia.
We have already written a bit about GSA. They have been working on environmental analysis for a very long time. They have several labs dealing with water, air, soil, sludge, waste and many other matrices. A few months ago GSA acquired an olfactometer and they began their first steps in this beautiful field of the environmental sciences.
The company is accredited for many other analysis and they detected that there were not other accredited labs in Colombia according to the recent Standard NTC 5880, Air Quality. Determination of Odour Concentration by Dynamic Olfactometry.
The floor of a biofilter has to meet some stringent requirements. It should provide an excellent drainage with a stream of air with a very high humidity. In addition, the floor has to be loaded with a heavy biofilter medium and it should not be allowed to warp, bend or collapse. The UK company Hahn Plastic Ltd. has developed Hanit®, a new set of plastic grills and legs made of recycled material that is able to stand a biofilter media in extremely harsh conditions.
The traditional option when designing a biofilter floor is using a pre-cast concrete grill. This is often a very convenient way of flooring a a biofilter. The pre-cast concrete structures are resistant, durable under normal conditions and can be easily dismantled, when required.
However transport and handling charges are often a handicap for pre-cast concrete grills. In addition, this flooring has some problems when the air flow has a very high H2S concentration. Concrete gets corroded in these cases and a replacement of the floor has to be made, sometimes after a few years.
We say "international" cause around 12 countries attended that event, but unfortunately this event was not bilingual (such as the one we did in Chile), but just in Spanish. We apologize for that, and we hope next one is bilingual again.
Saying that, we are very happy to share with you the abstracts of the presentations, and guess what? some articles are in English!
Wastewater pumping stations sometimes become sources of emission of odours and polluting compounds that can influence on the staff health, the equipment and facilities state and the perception of general public about this activity.
F. Andrés Tomás*, J. A. Mut Noguera, M. Carrero Planes, J. Solís Sánchez, V. Fajardo Montañana.