Air DeodorizationMost of the new sewage treatment plants (STPs) are built in Building Basement area. The whole facility will be enclosed in a single building. The STP system is a combination of: Pre-treatment, primary treatment, secondary(biological)treatment & tertiary treatment.
Aqozone Industries DEEBRU DE-ODOR series ozone generators are highly efficient in reduction of the odor. Generally sewage Treatment Plants produces Odorous compounds during the treatment process. These compounds are generated by biological processes at different steps within in the plant. Typical areas with odor emissions are the inlet pump station with bar screen chamber, oil & grease trap, biological process, sludge handling, sludge drainage.
There is a wide spectrum of possible inorganic and organic molecules, which can create unpleasant Odours. The most common are hydrogen suphide, ammonia, sulphur compounds, mercaptans, amines, aldehydes, ketones etc.
Hydrogen Sulphide and Ammonia are two main parameters restricted by regulations. The concentration of H2S found in the exhaust air of Sewage Treatment Plant is in the range of 5 - 15 ppm. Threshold limit of H2S = 0.002 - 0.15 ppm