Скачать или смотреть Aerobic Digestion - Understanding Sewage Treatment Process

Aerobic digestion has long been the process of choice for small to medium size facilities up to 6 Million Gallons Per Day. A digester are designed based on detention time of one month or 30 days with little attention given to process considerations. With the advent of these new regulations, the easy avenue to Class B sludge is to hold the sludge for a minimum of 60 days at 15 Degrees Celsius or 59 Degrees Fahrenheit. However, this results in the need to double tank volumes or requires that plants increase the solids content of the feed solids.
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Aerobic digestion is a process in sewage treatment designed to reduce the volume of sewage sludge and make it suitable for subsequent use. More recently technology has been developed that allows the treatment and reduction of other organic waste, such as food, cardboard and horticultural waste. It is a bacterial process occurring in the presence of oxygen. Bacteria rapidly consume organic matter and convert it into carbon dioxide, water and a range of lower molecular weight organic compounds. As there is no new supply of organic material from sewage, the activated sludge biota begin to die and are used as food by saprotrophic bacteria. This stage of the process is known as endogenous respiration and it is process that reduces the solid concentration in the sludge.
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J. Scott Shipe produced this video for educational purposes / questions regarding the content please contact [email protected]
File Video 1,351 - 2017 REMEMBER WATER MATTERS!