... input of ammonia appeared to indicate that ammonia was behaving conservatively. In an attempt to confirm this a mass balance exercisewas carried out relating the amount of ammoniacal nitrogen and nitrate nitrogen entering and leaving the upper estuary. Nitrite was not considered as concentrations were...

... to emphasize the point that he made (that the reduction of ammonia in water passing through rapid sandfilters wa,sadversely affected by temperature)if he had also shown graphs of the water temperature. On one of the slides shown by the Author there was a temperature chart ; it would be an advantage...