Community Research and Development Information Service - CORDIS


This paper reports the results obtained from an aeration experiment of hypolimnic waters of Lake Varese by the enclosure method. The natural laboratory comprised a metallic structure and a polyethylene curtain which did not reach the surface of the lake, having the aim of containing only the deep waters. The aeration was carried out using an air-lift in order to avoid the alteration of the natural stratification of the water column. In the period during which the highest concentrations of dissolved oxygen were noted, total phosphorus and orthophosphates were found to be higher than those in the control laboratory. For nitrogen the opposite behaviour was found.

Additional information

Authors: BRESSI G, Istituto dell'ambiente, Milano (IT);CARDANI G, JRC Ispra (IT);PREMAZZI G, JRC Ispra (IT)
Bibliographic Reference: Article: Ingegneria Ambientale, Vol. 12 (1991) pp. 43-49
Record Number: 199111089 / Last updated on: 1994-12-02
Original language: it
Available languages: it