ABSTRACT
Activated sludge the solids formed when microorganisms are used to treat wastewater using the activated sludge treatment process. It includes organisms, accumulated food materials, and waste products from the aerobic decomposition process. Advanced waste treatment treatment technology to produce an extremely high-quality discharge. Aerobic conditions in which free, elemental oxygen is present. Also used to describe organisms, biological activity, or treatment processes that require free oxygen. Anaerobic conditions in which no oxygen (free or combined) is available. Also used to describe organisms, biological activity, or treatment processes that hnction in the absence of oxygen. Anoxic conditions in which no free, elemental oxygen is present. The only source of oxygen is combined oxygen, such as that found in nitrate compounds. Also used to describe biological activity or treatment processes that hnction only in the presence of combined oxygen. Average monthly discharge limitation the highest allowable discharge over a calendar month. Average weekly discharge limitation the highest allowable discharge over a calendar week. Biochemical oxygen demand. BODj the amount of organic matter that can be biologically oxidized under controlled conditions (5 days @ 20°C in the dark). Biosolids from Merriam-Webster 'S Collegiate Dictionary, Tenth Edition ( 1 998): biosolid n (1977) solid organic matter recovered from a sewage treatment process and used especially as fertilizer-usually used in plural.
