| 耐盐反硝化污泥与复合菌剂对高硫酸盐含氮废水的处理性能 |
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| 引用本文： | 吴贵阳, 张泽梁, 田志娟, 李步, 俞柯吟, 叶斌杰, 汪金立, 阮文彬, 冯丽娟. 耐盐反硝化污泥与复合菌剂对高硫酸盐含氮废水的处理性能[J]. 环境工程学报, 2023, 17(2): 644-654. doi: 10.12030/j.cjee.202210148 |
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| 作者姓名： | 吴贵阳 张泽梁 田志娟 李步 俞柯吟 叶斌杰 汪金立 阮文彬 冯丽娟 |
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| 作者单位： | 1.浙江海洋大学海洋科学与技术学院，舟山 316022; 2.中国石油化工股份有限公司洛阳分公司，洛阳 471100; 3.浙江海洋大学，浙江省石油化工环境污染控制重点实验室，舟山 316022 |
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| 基金项目： | 中石化洛阳分公司委托课题《耐盐复合菌剂制备及其在高盐高氮废水处理应用研究》(H21028007022) |
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| 摘 要： | 以耐盐反硝化污泥(DAS)和反硝化复合菌剂(DBA)为菌源，启动序批式生物膜系统(SBBRs)处理高硫酸盐含氮废水。结果表明，以相对低盐度(1%：12.5 g·L−1 SO42−和5 g·L−1 NaCl)启动系统，在不同菌源和载体条件下SBBRs启动时间均较短(6~11 d)，其中以DAS为菌源、载体污泥浸制预处理均能缩短启动周期。提升SO42-质量浓度至25 g·L−1 (盐度2%)和37.5 g·L−1 (盐度3%)后，各装置的硝氮去除率均可维持90%以上，其中3%盐度下悬浮填料系统反硝化完全(>98%)，显著高于生物绳系统(91.1±11.7)%。理论TOC/TN比为1.4~7，系统总氮去除率均稳定保持90%以上。优选TOC/TN值为2的实验室内处理石化厂高硫酸盐(2.7%)高氮(TN≈200 mg·L−1)废水，系统适应驯化后可获得稳定高效的总氮去除率，且悬浮填料去除率(>99%)与稳定性均优于生物绳(>90%)。系统硝酸盐还原途径以反硝化为主，且无显著硝酸盐异化还原为氨和硫酸盐还原作用。
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| 关 键 词： | 耐盐复合菌 生物强化 硫酸盐 菌源 载体 C/N比 |
| 收稿时间： | 2022-10-29 |
Treatment performance of high-sulfate nitrogenous wastewater by salt-tolerant denitrifying activated sludge and compound bacteria agents |
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| WU Guiyang, ZHANG Zeliang, TIAN Zhijuan, LI Bu, YU Keyin, YE Binjie, WANG Jinli, RUAN Wenbin, FENG Lijuan. Treatment performance of high-sulfate nitrogenous wastewater by salt-tolerant denitrifying activated sludge and compound bacteria agents[J]. Chinese Journal of Environmental Engineering, 2023, 17(2): 644-654. doi: 10.12030/j.cjee.202210148 |
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| Authors: | WU Guiyang ZHANG Zeliang TIAN Zhijuan LI Bu YU Keyin YE Binjie WANG Jinli RUAN Wenbin FENG Lijuan |
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| Affiliation: | 1.College of Marine Science and Technology, Zhejiang Ocean University, Zhoushan 316022, China; 2.SINOPEC Luoyang Petrochemical Company, Luoyang 471110, China; 3.Zhejiang Provincial Key Laboratory of Petrochemical Pollution Control, Zhejiang Ocean University, Zhoushan 316022, China |
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| Abstract: | In this study, salt-tolerant denitrifying activated sludge (DAS) and denitrifying bacterial agents (DBA) were used as inoculants to start sequential batch biofilm systems (SBBRs) treating high-sulfate nitrogenous wastewater. The results showed that the start-up period of SBBRs was short (6-11 d) with different sources of inoculants and carriers at salinity of 1% (12.5 g·L−1 SO42− and 5 g·L−1 NaCl), of which the start-up period of SBBRs was reduced with DAS as inoculants or carriers pretreatment via sludge leaching. After upgrading SO42− mass concentrations to 25 g·L−1 (salinity of 2%) and 37.5 g·L−1 (salinity of 3%), SBBRs were still able to maintain the nitrate reduction rates higher than 90%. The complete denitrification (>98%) occurred in SBBRs with suspended carrier at salinity of 3%, which was significantly higher than that (91.1±11.7)% of SBBR with biological rope carrier. The TN removal efficiency of SBBRs consistently maintained at >90% at the theoretical TOC/TN ratios of 1.4-7. SBBRs were further used to treat high sulfate (2.7%) and nitrogen rich (TN≈200 mg·L−1) wastewater at a TOC/TN ratio of 2, and stable and highly efficient TN removal occurred after the system adapted to acclimation, and higher reduction rates (>99%) and stability in the suspended carrier were also achieved than those in carrier biological rope (>90%). The nitrate reduction pathway in the system was dominated by denitrification without significant dissimilatory nitrate reduction to ammonium and sulfate reduction. |
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| Keywords: | salt-tolerant compound bacteria bioaugmentation sulfate bacterial source carrier C N ratio |
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