Activated sludge wastewater treatment plants optimisation to face pollution overloads during grape harvest periods.

The principal objective of our study was to optimise a municipal activated sludge wastewater treatment plant (WWTP) to face high organic flows due to viticulture effluents inputs. Treatment file optimization consisted in testing different treatment lines, changing the number and volume of biological basins and clarifiers, with or without a buffer basin upstream, with a view to achieving a better reduction of COD. The actual WWTP biological stage is composed of two aerated basins whose total volume is 1365 m3.

Rewarming rate of the myocardium during aortic cross-clamp time: variations with different levels of body hypothermia.

Twenty patients underwent elective cardiac valve replacement at 20 degrees C of body hypothermia. Temperatures of the ventricles of both walls were monitored on 12 different sites. Distribution of myocardial temperature ranged between 24.