Biofiltration and its application in treatment of air and water pollutants-A review

Abstract

Biofiltration is a relatively emerging new technology, applied to wastewater treatment and other toxic compounds. Since the main purpose of the biofilter is to remove the dissolved organics, the suspended particles are removed in conventional filter before subjecting the waste water. The parameters that can affect the performance of a biofilter are the characteristics of filter media, hydraulic and organic loading rate, and filter backwash techniques. The mechanisms, which allow biofilters to work and which must be controlled to ensure success, are complex. Ultimately, biotransformation converts the contaminant to biomass, metabolic by-products or carbon dioxide and water. This review paper presents an overview of biofiltration technologies for the control of water pollutants, functioning, mechanism and its Designed parameters.