| 摘要 |
<p>The process comprises subjecting gas to water for washing and transferring gas pollutants for cleaning the effluents, and subjecting the effluent to biological treatment, anaerobic treatment and stirring with a molar ratio of ammonia and hydrogen sulfide (NO 3/HS ->) of 0.6-0.9 for removing the hydrogen sulfide ion. The biological treatment is carried out by an anaerobic bio-microbial population of Thiobacillus denitrificansfor simultaneous desulfurization and denitrification at 30[deg] C and pH of 7.4+- 0.1. The hydrogen sulfide and ammonia are washed by a water column. The process comprises subjecting gas to water for washing and transferring gas pollutants for cleaning the effluents, and subjecting the effluent to biological treatment, anaerobic treatment and stirring with a molar ratio of ammonia and hydrogen sulfide (NO 3/HS ->) of 0.6-0.9 for removing the hydrogen sulfide ion. The biological treatment is carried out by an anaerobic bio-microbial population of Thiobacillus denitrificansfor simultaneous desulfurization and denitrification at 30[deg] C and pH of 7.4+- 0.1. The hydrogen sulfide and ammonia are washed by a water column with a pH of 7.04-9.2 at 25[deg] C under inert atmosphere. The effluent from a first anaerobic biological treatment is subjected to a second biological treatment for removal of ammonium ion. The step of treating the ammonium ion is carried out using an aerobic microbial population of Nitrosomonas spand Nitrobacter spat 30[deg] C and pH of 7.4-8, and is provided by an aerobic microbial population by anammox type bacteria at temperature of 30[deg] C and pH of 7-8. The effluent obtained from the second treatment is recirculated for washing and/or first biological treatment. An independent claim is included for an installation for removing pollution of a gas containing hydrogen sulfide and ammonia obtained from the gasification of sludge from wastewater treatment plant.</p> |
