生物滴滤塔净化含硫混合废气

发布时间：2018-03-20 14:46

本文选题：生物滴滤塔　切入点：混合废气　出处：《环境科学》2017年03期 　论文类型：期刊论文

【摘要】：利用甲硫醚(DMS)降解菌Alcaligenes sp.SY1和丙硫醇(PT)降解菌Pseudomonas putida.S-1强化生物滴滤塔(BTF)处理DMS和PT的混合废气,研究了其挂膜启动及稳定运行阶段的降解性能,并考察了该系统同时去除H2S的能力.结果表明,BTF在DMS和PT进口浓度均为50 mg·m-3,EBRT为30 s的条件下,运行11 d即可完成挂膜启动,填料上的生物量明显增加,DMS、PT的去除率分别可达到90%和100%.系统稳定运行时,DMS和PT的最大去除负荷分别为8.7 g·(m~3·h)~(-1)和12.4 g·(m~3·h)~(-1),PT的去除效果更佳.DMS和PT混合废气在降解过程中,PT对DMS的降解有较明显的抑制作用,当PT进气浓度大于51 mg·m-3时,DMS的去除效率下降.BTF还能同时有效去除H2S,当混合废气中H2S浓度达到230 mg·m-3时,H2S去除率仍能高达98%,但是115 mg·m-3以上的H2S会对DMS的降解产生不利影响.
[Abstract]:The mixed waste gas of DMS and PT was treated by Alcaligenes sp.SY1 and Pseudomonas putida.S-1, the biodegradable bacteria Pseudomonas putida.S-1. The degradation properties of DMS and PT were studied. The ability of the system to remove H2S at the same time was also investigated. The results showed that when the inlet concentration of DMS and PT were both 50 mg 路m ~ (-3) EBRT and 30 s, the suspension could be started in 11 days. The removal rates of DMS PT and PT were 90% and 100 respectively. The maximum removal loads of DMS and PT were 8.7 g 路m ~ (3) 路h ~ (-1) and 12.4 g 路m ~ (3) 路h ~ (-1) respectively. The removal efficiency of PT was better. DMS and PT mixed waste gas were more effective in the degradation process. The degradation of DMS was inhibited obviously. When the concentration of PT was more than 51 mg 路m-3, the removal efficiency of DMS was decreased. BTF could also effectively remove H2S. when the concentration of H2S in mixed waste gas was 230mg 路m-3, the removal rate of H2S could still reach 98mg 路m-3, but H2S above 115mg 路m-3 would have a negative effect on the degradation of DMS.
【作者单位】：浙江工业大学环境学院;浙江省环境保护科学设计研究院;浙江省台州市玉环县环境保护局;
【基金】：国家自然科学基金项目(51308502,51178430) 浙江省环保科研计划项目(2014A003) 浙江省公益性应用研究计划项目(2014C33029)
【分类号】：X701

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