| 脱氮硫杆菌处理垃圾填埋场渗滤污水的研究 |
| 摘要点击 1595 全文点击 1959 投稿时间：1997-03-31 |
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| 中文关键词 自养反硝化 脱氮硫杆菌 生物膜 硫磺 填埋场渗滤污水 硝酸盐 |
| 英文关键词 autotrophic denitrification biofilm Thiobacillus denitrificans sulfur landfill leachate nitrate removal |
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| 中文摘要 |
| 在填充不同粒径硫磺的固定床反应器中,研究脱氮硫杆菌去除垃圾填埋场硝化渗滤污水中硝酸盐的可行性。结果表明,当HRT为5.71h,硫磺粒径为2.8-5.6mm时,最高处理浓度(以NO3--N计)达400mg/L.达到完全反硝化所需的最小停留时间取决于硫磺粒径及进水硝酸盐浓度。硫磺粒径为2.8-5.6mm,5.6-11.2mm,11.2-16mm时,NO3--N最高容积负荷分别为594,278,175.4g/(m3·d).NO3--N最大表面负荷约为0.68g/(m2·d),是自养反硝化的控制因素,与硫磺粒径无关。 |
| 英文摘要 |
| The feasibility of nitrate removal from nitrified landfill leachate in reactors with different sulfur particle size was studied.The results indicate that ① the reactor with sulfur particle size of 2.8-5.6 mm can effectively remove nitrate from nitrified leachate up to a concentration of 400.mg/L NO3--N at a hydraulic retention time of 5.71h;② the minimum hydraulic retention time necessary for complete denitrification depends on sulfur particle size and influent nitrate concentration;③the maximum volumetric loading rate of NO3--N depends on sulfur particle size and is approximately 594,278 and 175.4g /(m3·d)for sulfur particle size of 2.8-5.6mm,5.6-11.2mm and 11.2-16mm, respectively;④ the maximum area loading rate of NO3--N,approximately0.68g/(m2·d),appears to be the process limiting factor and is practically independent of sulfur particle size. |
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