METHOD AND DEVICE FOR TRAFFIC / OPTIMIZED TRANSFER OF OPERATING GAS VOLUMES INCLUDING TWO DIMENSIONS surface HORIZONTAL ARE MUCH GREATER THAN THE VERTICAL DIMENSION.

摘要

The subject of the invention is the process and device for optimized gas circulation / transfer in operating volumes, the two horizontal surface dimensions of which are much larger than the vertical dimension. Within this specific framework, aeration materializes, in the basins, through porous materials or perforated membranes. The illustration of the principle according to the invention of the purification and aeration functions such that these functions are separated thanks to the presence of two separate zones, where the role taken by the sediments and also by their evolutionary process within the framework of the lagooning technique airy, is fundamental. A specific geometry is designed which is such that the role of the proper respiration of the sediments in the oxygen supply is made maximum, the recycling of the effluents being, on the contrary realized when the oxygen content of these effluents is at the minimum at the time where these effluents are partially recycled in the aerator circuit. The double nitrification / denitrification process takes place in the same installations.