生物法同步脱除SO_2和NO的实验研究  

Experimental study on biological simultaneous removal of SO_2-containing and NO-containing waste gases

作　　者：徐姣[1] 张卫江[1] 田桂林[2] 

机构地区：[1]天津大学化学工程技术研究所,天津300072 [2]天津天大天久科技股份有限公司,天津300072

出　　处：《化学工程》2010年第3期61-63,67,共4页Chemical Engineering(China)

摘　　要：生物滴滤工艺常被用来净化可被生物降解的污染气体。在一个生物滴滤塔中进行硫酸盐还原菌(SRB)、脱氮硫杆菌(TD)和异养反硝化菌3种优势菌的混菌填料挂膜,驯化成熟后处理含SO2和NO的模拟工业废气。实验表明:维持喷淋液pH值为7—8,S2O32-质量浓度为3 g/L左右,喷淋密度为18 m3/(m2.h),SO2进气质量浓度为200—5 000 mg/m3,NO进气质量浓度为20—500 mg/m3时,SO2气体平均去除率为97.6%,NO气体平均去除率为51.4%。Sulfate-reducing bacteria （ SRB）, Thiobacillus denitrificans （TD） and heterotrophic denitrificans were cultured on the packing materials in a bio-trickling tower to treat the simulated waste gases containing SO2 and NO under the anaerobic conditions. The experiment demonstrates that the average removal efficiency of SO2 and NO can reach 97.6% and 51.4%, respectively, when pH -7-8,S2O23- mass concentration is 3 g/L, circulating liquid spraying density is 18 m3/（ m2·h）, and inlet mass concentratios of SO2 and NO are 200-5 000 mg/m3 and 20- 500 mg/m3, respectively.

关 键 词：生物滴滤塔 硫酸盐还原菌(SRB) 脱氮硫杆菌(TD) 异养反硝化菌 SO2 NO 生物法 

分 类 号：X703[环境科学与工程—环境工程]