缓解在地下水中酸盐去除的硫包装床反应堆中自化脱过程中的硫不成比例
Zhikun Lu1, Yifeng Xu2, Yaokun Han1
1Key Laboratory of Green Utilization of Critical Non-metallic Mineral Resources, Ministry of Education, Wuhan University of Technology, Wuhan, 430070, China; School of Resources and Environmental Engineering, Wuhan University of Technology, Luoshi Road 122, Wuhan, 430070, China.
Journal of environmental management
|January 6, 2026
概括
优化用于地下水中酸盐的硫包装床生物反应器 (S0-PBRs) 涉及控制硫颗粒大小和空床接触时间 (EBCT). 这种方法提高了酸盐去除率,同时减轻了有问题的硫不成比例.
科学领域:
- 环境工程 环境工程
- 水处理技术水处理技术
- 微生物生态学 微生物生态学
背景情况:
- 使用硫包装床生物反应器 (S0-PBRs) 的硫自转化脱 (SADN) 显示出对成本有效的地下水酸盐整治的承诺.
- 由于硫自不成比例 (SADP) 的硫化物积累是S0-PBRs.广泛的工程应用的主要障碍.
研究的目的:
- 研究S0-PBRs的协同调节策略,以提高酸盐去除效率并抑制硫不成比例.
- 确定硫颗粒大小和空床接触时间 (EBCT) 对SADN性能和SADP缓解的影响.
主要方法:
- 系统控制硫颗粒大小 (0.075-0.1毫米) 和空床接触时间 (EBCT) 在S-PBRs.
- 监测酸盐去除率,硫化物生产和微生物群体组成,特别是硫不相称的细菌 (SDB).
主要成果:
- 使用较小的硫颗粒,实现了前所未有的1.92公斤NO3的酸盐去除率.
- 确定酸盐短缺 (NO3--N <4.8 mg/L) 是诱导SADP的一个关键因素,导致硫化物产量高达40.12 mg/L.
- 将EBCT从6小时减少到0.25小时有效地减轻了SADP和增加了从0.08到1.92公斤的酸盐负载NO3--N/m3/d.
结论:
- 在S0-PBR中对硫颗粒大小和EBCT的协同调节使得高效的地下水酸盐整治成为可能.
- 保持足够的酸盐负载对于限制在SADN过程中的硫不成比例和硫化物积累至关重要.
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