Refine search
Results 1-10 of 13
Impact of biocides on ground and surface water pollution in Jordan [Dams; spray drift; HHDN; Chlordane, Dieldrin, Heptachlor, Lindane]
1991
Al-Shuraiki, Y. (Ministry of Agriculture, Amman (Jordan). Centre for Pesticide Residue and Formulation Control Analysis)
Impact of urbanization and industrialization on water reservoirs; King Talal Reservoir, a case study
1991
Bino, M.J. (Royal Scientific Society, Aman (Jordan). Environmental Pollution Research Centre)
Protective measures of water resources in the Federal Republic of Germany
1991
Lersner, H.L.F. von (Federal Environmental Agency, Berlin (Germany))
Protective measures for water resources [water protection policies]
1991
Joerg, R. (Ministry of Interior of the State of Bavaria, Munich (Germany))
Impact of liquid wastes on surface and groundwater resources and their elimination through proper treatment and reuse
1991
Hartmann, L. (Karlsruhe Univ., Karlsruhe (Germany). Institute for Bioengineering and Technology of Wastewater)
A short historical review shows that treatment plants have been developed only after problems have occurred. The high diversity pollutants of totally different origins and natures, and chemical and biological characteristics require different tools. A good approach is to select one basic tool and try to integrate tools for other tasks within this main tool. The main tool will be in almost every case (for municipal wastewaters) an activated sludge plant surrounded by other elements of polishing or for the elimination of nitrogen, phosphorus, etc., according to the local situation. Some tasks like elimination of pathogens or eggs of intestinal worms, are automatically performed to a high degree in connection with the task of eliminating degradable organics. Special wastewaters with certain pollutants have to be treated at the place of their origins. For wastewater of agricultural production direct or indirect recycling should be favoured. For wastewater of industrial background containing toxicants, treatment must be economically included in the production process of the main product. Besides this, there appears a multitude of organics of unknown chemical composition and environmental significance. They should be permitted for public application only after lab tests have proved their degradability and the conditions of their degradation. Finally, one should always be aware that treatment plants have to be composed according to local conditions. Depending on the amount and composition of wastes, an integration of tool has to be found that not only meets the demands stemming from the wastewaters but also can be integrated into the existing economical and ecological frame
Show more [+] Less [-]The effect of paper industry effluent on growth, pigments, carbohydrates and proteins of rice seedlings
1991
Misra, R.N. | Behera, P.K. (Department of Botany, Government Science College, Chatrapur 761020, Orissa (India))
Assessing Se cycling and toxicity in aquatic ecosystems
1991
Porcella, D.B. (Electric Power Research Inst., Palo Alto, CA (USA)) | Bowie, G.L. | Sanders, J.G. | Cutter, G.A.
A model framework for assessing the effects of selenium on aquatic ecosystems
1991
Bowie, G.L. (Tetra Tech Inc., Lafayette, CA (USA)) | Grieb, T.M.
Seasonal cycle of polychlorinated biphenyls in the waters of the catchment basin of the river Seine (France)
1991
Chevreuil, M. (Paris Univ. (France). Inst. d'Hydrologie et de Climatologie) | Granier, L.
Relationships between the partitioning of lead in sediments and its accumulation in the marine mussel, Mytilus edulis near a lead smelter
1991
Bourgoin, B.P. (Trent Univ., Peterborough, Ont. (Canada). Environmental and Resource Studies Program) | Risk, M.J. | Evans, R.D. | Cornett, R.J.
