aerated gas
21Composting — Portalpar|Sustainable development|Sustainable development.svgComposting is the aerobic decomposition of biodegradable organic matter, producing compost. (Or in a simpler form: Composting is the decaying of food, mostly vegetables or manure.) The… …
22sewage system — Collection of pipes and mains, treatment works, and discharge lines (sewers) for the wastewater of a community. Early civilizations often built drainage systems in urban areas to handle storm runoff. The Romans constructed elaborate systems that… …
23aer´a|tor — aer|ate «AIR ayt», transitive verb, at|ed, at|ing. 1. to expose to and mix with air: »Water in some reservoirs is aerated and purified by spraying it high into the air. 2. to fill with a gas; charge or mix with gas, often under pressure: »Soda… …
24aer|a´tion — aer|ate «AIR ayt», transitive verb, at|ed, at|ing. 1. to expose to and mix with air: »Water in some reservoirs is aerated and purified by spraying it high into the air. 2. to fill with a gas; charge or mix with gas, often under pressure: »Soda… …
25aer|ate — «AIR ayt», transitive verb, at|ed, at|ing. 1. to expose to and mix with air: »Water in some reservoirs is aerated and purified by spraying it high into the air. 2. to fill with a gas; charge or mix with gas, often under pressure: »Soda water is… …
26Compost — (  /ˈ …
27circulation — circulable /serr kyeuh leuh beuhl/, adj. /serr kyeuh lay sheuhn/, n. 1. an act or instance of circulating, moving in a circle or circuit, or flowing. 2. the continuous movement of blood through the heart and blood vessels, which is maintained… …
28Dispersed media — A dispersed medium consists of two media that do not mix. More specifically, it contains discrete elements of one medium which are dispersed in a continuous second medium. The two media can be of very different nature. In particular, they can be… …
29aerate — aerate, ventilate, oxygenate, carbonate. Aerate is the general term and interchangeable in certain phrases with any of the others; the last three are specific terms which are not freely interchangeable with each other. Aerate means to supply or… …
30Hydrogen sulfide — Systematic name …
