Measures of pollutant concentration — NOEL redirects here. For other uses, see Noel (disambiguation). Measures of pollutant concentration are used to determine risk assessment in public health. Industry is continually synthesizing new chemicals, the regulation of which requires… … Wikipedia
No effect concentration — (NEC) is a risk assessment parameter that represents the concentration of a pollutant that will not harm the species involved, with respect to the effect that is studied. It is often the starting point for environmental policy [Bruijn et al, 1997 … Wikipedia
Atmospheric dispersion modeling — Industrial air pollution source Atmospheric dispersion modeling is the mathematical simulation of how air pollutants disperse in the ambient atmosphere. It is performed with computer programs that solve the mathematical equations and algorithms… … Wikipedia
Useful conversions and formulas for air dispersion modeling — Various governmental agencies involved with environmental protection and with occupational safety and health have promulgated regulations limiting the allowable concentrations of gaseous pollutants in the ambient air or in emissions to the… … Wikipedia
Air pollution dispersion terminology — describes the words and technical terms that have a special meaning to those who work in the field of air pollution dispersion modeling. Governmental environmental protection agencies (local, state, province and national) of many countries have… … Wikipedia
Mathematical exposure modeling — is an indirect method of determining exposure, particularly for human exposure to environmental contaminants. It is useful when direct measurement of pollutant concentration is not feasible because direct measurement sometimes requires skilled… … Wikipedia
Spray tower — Spray towers or spray chambers are a form of pollution control technology. They consist of empty cylindrical vessels made of steel or plastic and nozzles that spray liquid into the vessels. The inlet gas stream usually enters the bottom of the… … Wikipedia
концентрация загрязняющих веществ — — [http://www.eionet.europa.eu/gemet/alphabetic?langcode=en] EN pollutant concentration A measure of the amount of a polluting substance in a given amount of water, soil, air, food or other medium. (Source: FFD)… … Справочник технического переводчика
Onsite sewage facility — On Site Sewage Facilities (OSSF) are wastewater systems designed to treat and dispose of effluent on the same property that produces the wastewater. A septic tank and drainfield combination is the oldest and most common type of OSSF, although… … Wikipedia
emission rate — /əˈmɪʃən reɪt/ (say uh mishuhn rayt) noun the rate at which a pollutant is emitted, being the product of the measured pollutant concentration and the measured effluent flow, the volumes in each case being measured under the same conditions of… …
Geography of China — Topography of China. Longsheng Rice Terrac … Wikipedia
