CLEANING OF H2S FROM POLLUTED AIR USING PEAT BIOFILTER

Rasa Vaiškūnaitė

doi:10.3846/mla.2020.13081

Abstract

Every year about 64 thousand tons of polluted air is being released to the ambient air. More than 30% of this pollution consists of toxic sulfur compounds. The properties of biological air cleaning technology – biofoltration with peat media – has been discussed in the article. Research was performed by using biofilter from Vilnius Gedimi-nas technical university laboratory. During testing ambient air, polluted with sulfur dioxide, was pulled through the biomedia with division of Thiobacillus microorganisms and calculations of cleaning efficiency were performed. Was determined the efficiency of peat biofilter charge (changing the technical characteristics of the air flow rate, the number of layers, the pollutant concentration value) depending on the nature of the investigated sulfur compounds and their concentrations.

Highlights

The biggest concern of these times in both developed and developing countries is the rapid growth of industry and energy sectors, which cause growing emissions to the ambient air. 30% of this pollution consists of toxic for humans and environment sulfur compounds.Ever since the beginning of the 20th century began the active interest in the biological air purification technology
Sulfur hydrogen is emitted by many polluting enterprises. These companies include all of the chemical industries, where the H2S gas is used as a raw material; as well as the industry, which is processing sulfide and other sulfur compounds, as they occur during the interim process or as a waste product
The overall removal efficiency of hydrogen sulfide in biofilter packed with peat charge is shown in Figures 1 and 2

Summary

Introduction

Ever since the beginning of the 20th century began the active interest in the biological air purification technology. This method makes it possible ecologically clean the polluted air environment, and the construction of various construction equipment, whereas the load can be used inexpensive, multi-process resulting from the material – bark, rushes, straw, peat, activated sludge, etc. Sulfur hydrogen is emitted by many polluting enterprises These companies include all of the chemical industries, where the H2S gas is used as a raw material; as well as the industry, which is processing sulfide and other sulfur compounds, as they occur during the interim process or as a waste product. Fermentation takes place in industrial processes and other organic substances in anaerobic decomposition, where stands organic and inorganic sulfur-containing material (Chung et al, 2001, 2010; Hartikainen et al, 2000, 2011)

Methods

Results

Conclusion