Related Experiment Video
Updated: Jul 14, 2026

A Novel Bioreactor for High Density Cultivation of Diverse Microbial Communities
Published on: December 25, 2015
Tertiary filtration in small wastewater treatment plants
1Department of Civil Engineering, University of Salerno, Via Ponte don Melillo, 84084 Fisciano, Italy. vnaddeo@unisa.it
Abstract:
Tertiary filtration can be proposed in small wastewater treatment plants with impact on protected water bodies. Rotating disk filters may be adopted, in respect to conventional sand filters, when low availability of space and low investment costs are the prevailing conditions. The overall objective of this research was to evaluate the filtration efficiency of rotating disk filters; to compare effectiveness with traditional sand filters; to analyse thoroughly the importance of particle size distribution in wastewater tertiary filtration. In the experimental activity, conventional wastewater quality parameters were investigated and particle size distribution (PSD) was characterized to discuss the filter effectiveness. The effect of design and operation parameters of tertiary filters were discussed related to particle removal curves derived from particles counts. Analysis of particle size distribution can be very useful to help comprehension of filtration processes, design of filtration treatments and to decide the best measures to improve filter performance.
Related Concept Videos
Biological Treatment of Effluent and Waste Water
Microbial Wastewater Treatment
Filtration
Downstream Processing
Filtration and Urine Formation
Physical Methods for Controlling Microbial Growth: Radiation and Filtration

