摘要
以H2S气体为研究对象，考察改进型生物滴滤塔的脱臭效能、最适工艺运行条件及其影响因素。试验结果表明，循环液喷淋量为10L／s，气体流量为400L／s的情况下，最高H2S负荷率可以达到68．2g／m^3·h；最适气体停留时间68．4s。当人口H2S浓度分别为0—700mg／m^3、700—1000mg／m^3和大于1000mg／m^3时，对应的最适循环液喷淋量为10L／s、15L／s和60L／s。H2S去除率100％的情况下，最大允许进气浓度可达1870mg／m^3，即最大H2S负荷率为98．4g／m^3·h。该研究表明，改进型生物滴滤塔具有较高的H2S去除能力，最适工艺运行条件的确定对污水厂臭气和化工行业产生的H2S处理具有一定的指导意义。
Lab-scale tests were carried out to investigate the H2S removal capacity, the optimal operating conditions in an improved bio-trickling reactor. The experimental results demonstrated that when the cycled liquid flow was 10 L/s and the gas flow was 400 L/s, the optimal H2S loading rate and gas retention time were 68.2 g/m^3 · h and 68.4 s respectively. When the concentration of inlet were 0 - 700 mg/m^3 ,700 - 1000 mg/m^3 and above 1000 mg/m^3, the corresponding cycled liquid flow were 10 L/s, 15 L/s and 60 L/s respectively. It is found that when H2S removal rate reached 100% , the allowed maximum concentration of inlet reached 1870 mg/ m^3 , namely, the maximum H2S loading rate was 98.42 g/m^3·h. These data indicated that the an improved biotrickling reactor had quite high capacity of H2S removal, and the optimal operating conditions we found will give a significant guidance for the deodorization of H2S in sewage plant or chemical industry.
出处
《环境污染治理技术与设备》
CSCD
北大核心
2006年第2期45-49,共5页
Techniques and Equipment for Environmental Pollution Control
基金
国家自然科学基金资助项目(50208006)
关键词
硫化氢
生物滴滤塔
工艺条件
生物脱臭
hydrogen sulfide
bio-trickling reactor
run condition
biological deodorization
