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Decontamination and energetic supply in rural installations
1992
Carbonell, V. (Escuela Tecnica Superior de Ingenieros Agronomos, Madrid (Spain). Dept. de Fisica) | Bigeriego, M. | Delgado, M.
Digestion of water hyacinth with the leach bed reactor and anaerobic filter
1992
Tentscher, W. (Asian Inst. of Technology, Bangkok (Thailand). Energy Technology Div.)
Merseburg Technical College [Microbial desulphurization]
1992
Neumann, W. (Technische Hochschule Leuna-Merseburg, Merseburg (Germany). Inst. fuer Biotechnologie)
Investigations on the adsorption and degradation of different polar organic compounds in test filter systems
1997
Knepper, T.P. | Wilken, R.D. (ESWE-Inst. for Water Research and Water Technology, Sohnlenstrasse 158, C5201 Wiesbaden (Germany))
Test filter systems are quite helpful to study the persistence of organic compounds in order to give hints for a better remediation of the environment. Therefore special test filters are used in the chemical industry in Germany for more than 20 years in order to determine the microbial bad degradable parts of the dissolved organic carbon (DOC) in the sewage outlets. These test filters can be considered as biological active fixed bed reactors which enable to simulate the biological degradation of organic compounds during an underground passage. It was shown by different investigations, that these test filter systems are well suitable for their expected tasks by determining group parameters. While looking for single compounds they were proven to be such good model systems. For good degradable compounds as e.g., 6-(methyl (phenylsulfonyl) amino)-hexanoic acid (HPS) it could be shown that these substances are microbially degraded on the test filter systems, while the more stable compounds, and an important example for that in Germany is naphthalene-1,5-disulfonic acid, showed a total different behavior. Therefore, the elimination of e.g. napthalene-1,5-disulfonic acid was investigated utilizing labscale filters containing Siran (porous, sintered glass) and activated carbon as support materials for bacteria. However, the different adsorption capacities of activated carbon and Siran had large effects on the measured substrate concentration. Thereby the test filter being run with Siran glass showed to be suitable for modeling the degradation behavior of single compounds during the underground passage. It can be concluded that those test filters can be utilized for studying organic compounds on their behavior as being relevant for water works by means of bad microbial biodegradability
Show more [+] Less [-][Trials with combined chemical and biological filter for degradation of TCE in groundwater [trichlorethylene]]
2002
Soegaard, E.G. (Aalborg Univ., Esbjerg (Denmark)) | Christensen, S.R.
The Zidine infiltration water source [Serbia, Serbia&Montenegro] - preliminary treatment plant
2003
Dimkic, D. | Ljuboja, M. | Popovic, L. | Vulic, D. (Institut za vodoprivredu "Jaroslav Cerni", Beograd (Serbia and Montenegro))
The area of Zidine is located southwest of Belgrade, Serbia&Montenegro, in the sanitary protection zone of the existing Belgrade water source. This potential water source is capable of yielding water of better quality than that of the existing raw groundwater, for final treatment plants at Bezanija and Banovo Brdo. In view of available capacities of these plants and the raw water system, the water disposal issue is practically resolved and the water source is also highly advantageous in economic terms. Two options of preliminary treatment after settling were considered: sand filters and microfilters.
Show more [+] Less [-]Recent advances in biogas technology in Cuba
1994
Sanchez, E. (National Center for Scientific Research, La Habana (Cuba)) | Benitez, F. | Travieso, L. | Weiland, P. | Ramos, C. | Milan, Z. | Conde, J.L. | Rovirosa, N. | Montalvo, S. | Lopez, M.
Obstacles to the implementation of anaerobic treatment technology for industrial wastewater treatment
1994
Switzenbaum, M.S. (Massachusetts Univ., Amherst (USA). Dept. of Civil and Environmental Engineering)
Anaerobic treatment of municipal landfill leachates
1994
Alkalay, D. (Universidad Tecnica 'Federico Santa Maria', Casilla (Chile)) | Guerrero, L. | Chamy, R. | Schiappacasse, M.C.
(Pollutant load resulting from agriculture)
1993
Frede, H.-G. (Giessen Univ. (Germany). Inst. fuer Landeskultur) | Bach, M.
Belastungen von Oberflaechengewaesser koennen grundsaetzlich von kommunalen, industriellen und landwirtschaftlichen Einleitern ausgehen. Gewaesserbelastungen aus der Landwirtschaft durch N, P und Pflanzenbehandlungsmittel treten raeumlich und zeitlich differenziert auf. Das Ausmass der jeweiligen Belastung ist unterschiedlich hoch. Mengenmaessig werden die Eintraege vom Nitrat bestimmt. Kritische Konzentrationen und Frachten treten beim Phosphor und moeglicherweise bei Pflanzenbehandlungsmitteln auf. Die Belastungsursachen sind unterschiedlich. Die Ursachen der N-Eintraege sind mengen-, pflanzen- und verteilungsspezifisch. Phosphor entstammt der Erosion. Pflanzenbehandlungsmittel werden ueber die Erosion, direkt oder ueber das Grundwasser eingetragen. Verminderungsstrategien sind generell bekannt. Sie sind auf diese unterschiedlichen Ursachen abzustimmen.
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