LYCOS RETRIEVER
Digestion: Water
built 629 days ago
In Washington State, anaerobic digestion of dairy wastes is receiving a lot of attention. Currently there are approximately 600 operating dairy farms in the state, that manage nearly 250,000 dairy cows. These dairies are often identified as sources of odor, water and air pollution, including greenhouse gas emissions. The use of anaerobic digesters to help manage dairy wastes can alleviate many of these environmental problems, while providing farmers with a new source of revenue.
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The wastewater exiting the anaerobic digestion facility will typically have elevated levels of BOD and COD. Some of this material is termed 'hard COD' meaning it cannot be accessed by the anaerobic bacteria for conversion into biogas. If this effluent was put directly into watercourses it would negatively affect them by causing eutrophication. As such further treatment of the wastewater is often required. This treatment will typically be an oxidation stage where air is passed through the water in a sequencing batch reactors or reverse osmosis unit.
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Kapha digestion is slower and heavier. Kaphas should favor warm, light food. Food should be as dry as possible, cooked without much water. Tastes should be pungent, bitter, and astringent. Kaphas prefer spicy food, which promotes better digestion for them.
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