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Environment

Issues related to the circumstances or condition of the earth's natural surroundings.

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Environment > Pollution

bead activated carbon (BAC)

Environment; Pollution

Bead activated carbon is made from petroleum pitch and supplied in diameters from approximately 0.35 to 0.80 mm. Similar to EAC, it is also noted for its low pressure drop, high ...

Impregnated carbon

Environment; Pollution

Porous carbons containing several types of inorganic impregnate such as iodine, silver, cations such as Al, Mn, Zn, Fe, Li, Ca have also been prepared for specific application in ...

polymer coated carbon

Environment; Pollution

This is a process by which a porous carbon can be coated with a biocompatible polymer to give a smooth and permeable coat without blocking the pores. The resulting carbon is ...

hydraulic retention time (HRT

Environment; Pollution

The hydraulic retention time (HRT), also known as hydraulic residence time or t (tau), is a measure of the average length of time that a soluble compound remains in a constructed ...

solids retention time (SRT)

Environment; Pollution

The Solids Retention Time (SRT) is the average time the activated-sludge solids are in the system. The SRT is an important design and operating parameter for the activated-sludge ...

food-to-microorganism ratio (F/M)

Environment; Pollution

The F/M ratio is a process control number that helps you to determine the proper number of microorganisms for your system.

mixed liquor suspended solids concentration (MLSS)

Environment; Pollution

Mixed liquor suspended solids (MLSS) is the concentration of suspended solids, in an aeration tank during the activated sludge process, which occurs during the treatment of waste ...