Sludge considerations?

Question

flow considerations

head loss

retention time etc.

please help me i have no idea what any of this means

Answer 1

See these yahoo search results but read the extract ( passage taken from the link materials stated below)

http://www.bae.ncsu.edu/programs/extensi...

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EXTRACT of above mentioned link

Sludge Survey Methods for Anaerobic Lagoons

Printable PDF File

Sludge accumulates in anaerobic lagoons and consists of organic and nonorganic material produced by biological digestion of animal waste and other substances. Lagoon design includes consideration of sludge accumulation, and lagoon management should include periodic measurement of the depth of sludge and its removal when accumulation is excessive. The Natural Resources Conservation Service (NRCS) has a practice standard for lagoon management in North Carolina (Code 359-1) that requires an annual sludge survey after five years of lagoon operation; the North Carolina Division of Water Quality (DWQ) often requires annual sludge surveys when it issues lagoon permits. This document, which supplements the publication Sludge Management & Closure Procedures for Anaerobic Lagoons, AG-604, tells how to carry out a sludge survey and discusses sludge depth measurement, volume determination, and nutrient sampling.

Requirements for sludge surveys ( TO READ DETAILS OPEN THIS LINK)

http://www.bae.ncsu.edu/programs/extensi...

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SOME MORE LINKS......included beneath

http://ec.europa.eu/environment/waste/sl...

VISIT ALSO

http://www.state.sd.us/denr/des/P&s/desi...