Download The Dictionary of Environmental Science and Engineering by Pfafflin et al PDF

By Pfafflin et al

Environmental technological know-how and engineering is a very interdisciplinary box. From its origins in public future health perform, crisis for the health and wellbeing of the environment has embraced components as various as chemistry, the earth sciences, biology, engineering and legislation. The professional language of any self-discipline could be a barrier to co-operation and knowing in fixing environmental difficulties. The Dictionary of Environmental technological know-how and Engineering explains many vital professional environmental phrases in a transparent and concise method. It additionally presents an intensive consultant to the various acronyms encountered in environmental technology. The Dictionary of Environmental technological know-how and Engineering could be a worthwhile reference software for someone operating, even if at once or not directly, with the surroundings. The dictionary describes a number of the acts, agencies and necessities with regards to the laws of our environment, giving specific emphasis to these of the USA of the United States. therefore, it is going to be rather invaluable to these looking a better knowing of the USA viewpoint at the environmental query.

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Extra info for The Dictionary of Environmental Science and Engineering (Routledge Dictionaries)

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The moisture can remain on the inner top (crown) of the pipe. The sulfur oxidizing Thiobacillus turn the hydrogen sulfide into sulfuric acid. In concrete sewers the sulfuric acid reacts with lime in the sewer to form calcium sulfate. Structural strength of the pipe is reduced. t VALUE A measure of the adequacy of disinfection, the product of C, disinfectant concentration in mg/L, and contact time t, in minutes. 7 Â 1010 disintegrations per second of a radioactive substance. More commonly used are the millicurie, microcurie and picocurie.

These can function as carriers of hydrogen and can be donors or acceptors of hydrogen. COGENERATION see Combined heat and power COLIFORMS see E. coli COLLOID A very small particle dispersed in a medium. Colloidal particles are usually in the range of 1 micron to 100 microns. These particles have 34 Color large surface area in relation to mass and this property is of great significance. Charges collect on the surfaces and colloidal dispersions may be quite stable. Colloidal particles formed during water treatment processes are removed by addition of electrolytes which supply ions of opposite charge.

CYANOPHYTA see Algae CYCLE see Biogeochemical cycle. see Citric acid cycle. see Federal driving cycle. see Hydrologic cycle CYCLONE One of the simpler and cheaper dust collectors, this equipment has low efficiency except when used with coarse dust. Gas with entrained dust enters tangentially at 50–100 ft/sec and flows downward in a helical path in an annulus, then upward in the center to an outlet. Dust particles are driven to the walls by centrifugal force of the order of 100 times the force of gravity (100 g) and exit from the dust outlet at the bottom of the cyclone.

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