【摘要】 为探究蚯蚓粪能有效处理硫化氢气体,以污泥基蚯蚓粪为填料,采用卧式生物反应器去除H₂S气体,考察蚯蚓粪对H₂S的去除效果,研究气体停留时间和容积负荷对H₂S去除率的影响及生物降解宏观动力学.结果表明:蚯蚓粪为载体卧式生物反应器在启动运行6 d后,H₂S去除率可接近100%.当气体停留时间76～106 s,进气浓度100～500 mg/m³,H₂S容积负荷高达400. 6 g/（m³·d）时,H₂S去除效率稳定在90%以上;蚯蚓粪吸附降解H₂S的最大表观去除速率（Vm）和表观半饱和常数（Ks）分别为1 428. 6 g/（m³·d）、417. 1 mg/m³.通过分析可知,卧式蚯蚓粪生物反应器能高效处理H₂S气体,且具有较强的抗负荷冲击能力.更多还原

【Abstract】 This paper aims to explore the feasibility of removing hydrogen sulfide（ H₂S） contaminated air by using the vermicompost. A type of horizontal bioreactor packed with vermicompost derived from sludge was used in the removal of hydrogen sulfide. The effects of retention time and different volumetric loading on H₂S removal efficiency and macroscopic kinetics of biodegradation were studied. The results show that H₂S removal efficiency is close to 100% after 6 days by the operation of horizontal bioreactor. When the gas retention time is between 76 seconds to 106 seconds and the H₂S inlet concentration is between 100 and 500 mg/m³,the H₂S inlet loading can reach 400. 60 g/（ m³·d）,while the removal efficiency stabilizes over 90%. Furthermore,through kinetic analysis of biodegradation,the maximum removal rate and saturation constant of H₂S will be Vm= 1 428. 57 g/（ m-3·d） and Ks= 417. 14 mg/m³. respectively.This study suggests that the horizontal bioreactor packed with vermicompost has an excellent performance on purifying the hydrogen sulfide contaminated air and on resisting high shock loading within this process.更多还原