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Environment
Issues related to the circumstances or condition of the earth's natural surroundings.
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Environment > Pollution 
denitrification
Environment; Pollution
"Denitrification is a microbially facilitated process of nitrate reduction (performed by a large group of heterotrophic facultative anaerobic bacteria) that may ultimately ...
advanced wastewater treatment
Environment; Pollution
"Advanced Wastewater Treatment. Any treatment of sewage that goes beyond the secondary or biological water treatment stage and includes the removal of nutrients such as ...
biodegradable organics matter (BOM)
Environment; Pollution
"Biodegradable organic matter does not have an absolute quantitative definition but is generally considered to be the naturally-occurring organics that can be readily broken ...
organic matter
Environment; Pollution
"Organic matter is generally referred to as both living and nonliving materials made up of carbon-containing chemicals other than the inorganic carbonates."
eutrophication
Environment; Pollution
"excessive richness of nutrients in a lake or other body of water, frequently due to runoff from the land, which causes a dense growth of plant life and death of animal life ...
return activated sludge (RAS)
Environment; Pollution
"Part of the settled material, the sludge, is returned to the head of the aeration system to re-seed the new wastewater entering the tank. This fraction of the floc is called ...
ammonia oxidation
Environment; Pollution
"ammonia oxidation is the reaction of ammonia with oxygen. This is how we write the reaction equation: 4NH3 (ammonia) + 5O2 (oxygen) ÷ 4NO (nitric oxide) + 6H2O ...
Sub-categories
- Biodiversity (2834)
- Environment statistics (18270)
- Environmental conservation (14127)
- Environmental policy (4979)
- Filter (86)
- Land preservation (469)
- Pollution (2318)
- Radiation hazards (3625)
- Waste management (1217)