Limnology of a Warm Hypertrophic Wastewater Reservoir in Israel

Juanico M. (1995). Limnology of a Warm Hypertrophic Wastewater Reservoir in Israel. II. Changes in Water Quality. Int. Revue ges. Hydrobio,l 80:415-428.

ABSTRACT

Factor analysis was used to identify the processes responsible or the changes in water quality in a stratified wastewater reservoir. These reservoirs are well suited to study hypertrophic conditions. In the epilimnion. the main source of variablility was the extemal loading due to variations in wastewater inputs and water level (volume) of the reservoir. The second source was the seasonal climatic changes aflecting photosynthesis. The third source was differences between night and day processes affecting REDOX potential. In the hypolimnion. the main source of vanability was organic loading hot due to both external loading (wastewater inputs) and internal loading (compounds released from the sediments). The second source was related to the input of chlorophyll into the hypolimnion, which were external (entry of chlorophyll rich intlow from a waste stabilization pond) and/or internal (input of chlorophyll from upper layers due to water column mixing).

KEYWORDS

hypertrophic, stratification, external loading, Internal loading, wastewater storage.