DS/EN ISO 11734:1999 Water quality - Evaluation of the ""ultimate"" anaerobic biodegradability of organic compounds in digested sludge - Method by measurement of the biogas production
This standard specifies a screening method for the evaluation of the biodegradability of organic compounds at a given concentration by anaerobic microorganisms. The conditions described in this test do not necessarily correspond to the optimal conditions allowing the maximum value of biodegradation to occur, since a dilute sludge is used with a relatively high concentration of test chemical. The test allows exposure of sludge to the chemical for a period of up to 60 d, which is longer than the normal sludge retention time (25 d to 30 d) in anaerobic digesters, though digesters at industrial sites can have much longer retention times. The method applies to o
DS/EN ISO 11734:1999 history
1999DS/EN ISO 11734:1999 Water quality - Evaluation of the ""ultimate"" anaerobic biodegradability of organic compounds in digested sludge - Method by measurement of the biogas production