Removal of Hydrogen Sulfide in Septic Tanks for Treating Black Water via an Immobilized Media of Sulfur-Oxidizing Bacteria
| Autor: | Bong-Jae Lee, Jeong-Il Cho, Hyon Wook Ji, Jeong-Hee Kang, Hyeong-Gyu Namgung, Sung Soo Yoo |
|---|---|
| Jazyk: | angličtina |
| Rok vydání: | 2020 |
| Předmět: |
0106 biological sciences
Health Toxicology and Mutagenesis media_common.quotation_subject Hydrogen sulfide hydrogen sulfide chemistry.chemical_element lcsh:Medicine Septic tank 010501 environmental sciences 01 natural sciences septic tank Article chemistry.chemical_compound bioreactor Bioreactors 010608 biotechnology Oxidizing agent Republic of Korea Bioreactor black water 0105 earth and related environmental sciences media_common Bacteria lcsh:R Public Health Environmental and Occupational Health Water Pulp and paper industry equipment and supplies odor management Sulfur Motor Vehicles Activated sludge Deposition (aerosol physics) chemistry Sewage treatment Sanitary Engineering Oxidation-Reduction |
| Zdroj: | International Journal of Environmental Research and Public Health International Journal of Environmental Research and Public Health, Vol 17, Iss 3, p 684 (2020) Volume 17 Issue 3 |
| ISSN: | 1660-4601 1661-7827 |
| Popis: | In South Korea, the installation of septic tanks for treating black water (STBW) is regulated even in sewage treatment areas to prevent the black water deposition in combined sewers. STBWs in which black water is anaerobically decomposed generate high concentrations of hydrogen sulfide (H2S). In this study, an immobilized media of sulfur-oxidizing bacteria (SOB) was used to remove the H2S. SOB media was prepared by using activated sludge collected from a wastewater treatment plant. Prior to field application, an appropriate cultivation period and aeration rate for SOB activation were estimated through a laboratory-scale test. The SOB was activated after a 23-day cultivation period and an aeration rate of 0.25 L-water/L-air/min. Moreover, the maximum H2S removal efficiency was observed at a cultivation period of 43 days and an aeration rate of 0.38 L-water/L-air/min. Then, the SOB media was installed on STBWs of various capacities. The H2S removal efficiency was compared between with and without SOB media. The maximum H2S elimination capacity with SOB media was 12.3 g/m3/h, which was approximately three times higher than without SOB media. Furthermore, the energy efficiency and oxidation rate were also three times higher with SOB, demonstrating the applicability of SOB for H2S removal in STBW. |
| Databáze: | OpenAIRE |
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