Search results for "effluent finishing"

Assessing the Feasibility of Wastewater Finishing Treatment by Modified Sand Filters.

2014

The purpose of this study was to investigate the performance of the modified biosand filtration at lab scale. The traditional biosand filter arrangement was modified adding a 2nd stage to the traditional single one. Pre-clarified wastewater first flows down through different filtration material layers; then flows upward in the second stage through other three - and finer - filtration layers including small gravel at the bottom, fine sand and small gravel again. During the experiment timespan (90 days) daily results were collected, analysed and tabled at the laboratories of the Publicly Owned Wastewater Treatment Station – Palermo, operated by AMAP. The analysis included bacteriological para…