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PDF, Engelska, 1993783 kr
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This volume gives an overview of the wide spectrum of nitrogen removal processes available today. Part A gives a brief outline of nitrogen pollution sources, the global nitrogen cycle and the treatment methods; part B presents details of all biological methods for nitrogen removal; and part C describes the physico-chemical nitrogen removal methods. Design examples relating to parts B and C are given in appendices.Design equations are given in the text, but more emphasis has been placed on the profound understanding of the biological and chemical processes and the basic factors that influence these. Parameters and regression equations for a quantitive description of these factors and their influence on the key processes are presented in several tables. This feature makes the volume a very useful handbook; it will be of great value to those environmentalists who require a record of the available nitrogen removal methods from both biological and chemical viewpoints.
Inbunden, Engelska, 1997
2 317 kr
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Slightly more than 100,000 chemicals are produced in such an amount that they are threatening to the environment. These include common chemicals such as household cleaners, detergents, cosmetics, medicines, and pesticides. The Handbook of Estimation Methods in Ecotoxicology and Environmental Chemistry presents estimation methods for determining a number of physicochemical, biological, and toxicological parameters for these chemicals. Included is WinTox software, an estimation tool that is quick and easy to use; it provides a good initial estimate that can be further refined. Through the estimation methods demonstrated in this book, the following urgent questions can be answered: