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Programmed sampling and testing of river estuary in Thailand, where water temperature averages 30 C during periods of low flow, indicates strong oxygen demand for nitrification and in turn reservoir of oxygen from nitrates to prevent anaerobic conditions downstream; with tidal movement of 40 km (30 mi). net downstream travel at 7 km to 10 km/day and 6+ days of detention in estuary, bacteria Nitrosomonas and Nitrobacter nitrify continuous supply of ammonia to nitrates; this requires modifications in determinations of BOD and modifications of parameters and equations defining dissolved oxygen concentrations for use on tropical estuaries.
Programmed sampling and testing of river estuary in Thailand, where water temperature averages 30 C during periods of low flow, indicates strong oxygen demand for nitrification and in turn reservoir of oxygen from nitrates to prevent anaerobic conditions downstream; with tidal movement of 40 km (30 mi). net downstream travel at 7 km to 10 km/day and 6+ days of detention in estuary, bacteria Nitrosomonas and Nitrobacter nitrify continuous supply of ammonia to nitrates; this requires modifications in determinations of BOD and modifications of parameters and equations defining dissolved oxygen concentrations for use on tropical estuaries.
Pollution of Chao Phraya river estuary
ASCE -- Proc (J Sanitary Eng Div)
Leffel, R.E. (author)
1968
12 pages
Article (Journal)
English
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