重庆大学 环境与生态学院
X523
新型碳材料在电解锰渣填埋场地无害化设计中的应用与示范 (xstc2018jscx-mysbX0308)，重庆市技术创新与应用示范项目.
School of Environment and Ecology,ChongQing University
Application and Demonstration of New Type Carbon Materials in the Harmless Design of Electrolytic Manganese Slag Landfill Site (xstc2018jscx-mysbX0308)，Chongqing Technology Innovation and Application Demonstration（Social and livelihood）Project
为了研究电解锰渣场污染地下水中复杂废水的修复问题，以农业废弃物柚子皮为原材料制成生物炭作为菌株Acinetobacter baumannii AL-6固定化载体(MBC)，得到菌株生物炭耦合体系（MBC）。探究了该耦合体系对含锰、氨氮以及高钙镁离子复合废水的综合处理能力，同时构建序批式间歇反应器（SBR）以探究其在废水处理中的应用潜力。实验结果表明，MBC在48 h内去除了98.46%的锰。与两个独立的实验组（生物炭组，菌株AL-6组）相比，MBC对锰的去除具有良好的协同作用。MBC对锰的平均去除率为15.87 mg L-1 h-1，是菌株AL-6组的1.09倍，生物炭组的14.33倍。此外，MBC对氨氮的最大去除率为71.92%，对钙镁离子也有一定的去除效果，分别为41.46%和26.95%。在SBR中，MBC能去除90.1%的锰和85.44%的氨氮。结果表明，微生物固定化具有巨大的应用潜力，可用于处理电解锰渣复合污染废水。
In order to study the remediation of complex wastewater from the groundwater polluted by the electrolytic manganese slag field, biochar was made from agricultural waste grapefruit peel as the raw material for the strain Acinetobacter baumannii AL-6 immobilized carrier (MBC), and the strain biochar coupling system (MBC) was obtained. The comprehensive treatment capacity of the coupling system for composite wastewater containing manganese, ammonia nitrogen and high calcium and magnesium ions was explored, and a Sequential Batch Reactor (SBR) was constructed to explore its application potential in wastewater treatment. The experimental results showed that MBC removed 98.46% of manganese within 48 h. Compared with two independent experimental groups (biochar group, strain AL-6 group), MBC has an excellent synergistic effect on the removal of manganese, and the average removal rate of manganese is 15.87 mg L-1 h-1, which is 1.09 times of that of the strain AL-6 and 14.33 times of that of the biochar group. In addition, MBC has a maximum removal ratio of 71.92% for ammonia nitrogen, and also has a certain removal effect for calcium and magnesium ions, with removal ratios of 41.46% and 26.95%, respectively. In the SBR, 90.1% of manganese and 85.44% of ammonia nitrogen are removed. The results show that immobilized strain AL-6 on grapefruit peel biochar has great application potential and can be used to treat wastewater polluted by electrolytic manganese slag.
