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AWWA M56 - NITRIFICATION PREVENTION AND CONTROL IN DRINKING WATER - SECOND EDITION Organization: AWWA
Date: 2013-01-01
Description: INTRODUCTION Nitrification is a microbiological process by which reduced nitrogen compounds (primarily ammonia) are sequentially oxidized to nitrite and nitrate (AWWA and EES 2002). Nitrification can be problematic in potable water systems that use chloramines for residual (or secondary) disinfection.
DS/EN ISO 9509 - WATER QUALITY - TOXICITY TEST FOR ASSESSING THE INHIBITION OF NITRIFICATION OF ACTIVATED SLUDGE MICROORGANISMS Organization: DS
Date: 2006-07-13
Description: The nitrifying activity of the sludge is verified by testing in the presence and absence of a specific inhibitor (e.g. N-allylthiourea; see Annex A). If the nitrification rate is within a suitable range for the test, i.e. 2 milligrams of nitrogen per gram of suspended solid and hour (mg of N per (g·h) to 6,5 milligrams of nitrogen per gram of suspended solids and hour (mg of N per (g·h) , the sludge may be used directly; if adjustments are not necessary (see Clause 9).
SAE/TP - 2007-01-3094 - EVALUATION OF A MICROGRAVITY COMPATIBLE MEMBRANE BIOREACTOR FOR SIMULTANEOUS NITRIFICATION/DENITRIFICATION Organization: SAE/TP
Date: 2007-07-09
Description: Merged biological and physiochemical processes (integrated water recovery systems (IWRS)) are capable of producing potable water at lower equivalent system mass (ESM) than treatment systems composed of only physiochemical processes.
DS/EN ISO 11733 - WATER QUALITY - DETERMINATION OF THE ELIMINATION AND BIODEGRADABILITY OF ORGANIC COMPOUNDS IN AN AQUEOUS MEDIUM - ACTIVATED SLUDGE SIMULATION TEST (ISO 11733:2004) Organization: DS
Date: 2004-11-29
Description: The tests can optionally be performed under conditions of nitrification and denitrification (Annex A) and coupling of the units (Annex B).
NBN - EN ISO 11733 - WATER QUALITY - DETERMINATION OF THE ELIMINATION AND BIODEGRADABILITY OF ORGANIC COMPOUNDS IN AN AQUEOUS MEDIUM - ACTIVATED SLUDGE SIMULATION TEST (ISO 11733:2004) Organization: NBN
Date: 2004-09-30
Description: The tests can optionally be performed under conditions of nitrification and denitrification and coupling of the units.
NBN - EN ISO 11733 - WATER QUALITY - DETERMINATION OF THE ELIMINATION AND BIODEGRADABILITY OF ORGANIC COMPOUNDS IN AN AQUEOUS MEDIUM - ACTIVATED SLUDGE SIMULATION TEST (ISO 11733:2004) Organization: NBN
Date: 2004-09-30
Description: The tests can optionally be performed under conditions of nitrification and denitrification and coupling of the units.

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