Wednesday, December 22, 2010

Methods of disposal 2

Conservancy : in which the sewage is discharged into a cesspool or septic tank and periodically removed , or is treated in a chemical or earth closet .

Dilution  : in which the sewage is discharfed into the sea , or an esturary of a tidal river . Not allowed in most countries today , unless treated .

No comments:

Post a Comment