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矿井排水与市政废水的连续联合处理

Charles D Spellman¹, Zachary T Burton², Kaoru Ikuma²

¹Department of Civil and Environmental Engineering, University of Rhode Island, Kingston, RI, USA; The Narragansett Bay Commission, Providence, RI, USA.

Journal of environmental management

|February 16, 2024

概括

在生物系统中与城市废水 (MWW) 共同处理酸性矿井排水 (AMD) 有效地回收了AMD并增强了MWW处理. 这种创新方法可以改善污染物的去除和病原体的减少,而不会对微生物群体或整体处理性能产生负面影响.

科学领域:

环境工程环境工程
水处理技术水处理技术
生物修复是一种生物修复.

背景情况:

酸性矿井排水 (AMD) 和市政废水 (MWW) 经常在采矿地区一起产生.
在现有MWW设施中同时处理AMD是一种新的方法,用于同时修复AMD和MWW处理.
关于生物过程和连续处理性能,对于全面实施仍然存在挑战.

研究的目的:

在生物系统中研究AMD与MWW连续联合治疗AMD的疗效和性能.
为了解决阻碍这种联合治疗方法全面应用的不确定性.
评估AMD联合处理对废水质量,污泥特性和微生物群落多样性的影响.

主要方法:

一个基板级测序批量反应器 (SBR) 用于合成AMD和MWW的连续联合处理.
测试了两种强度的合成AMD (91和720毫克/升酸度),以模拟场变化.
废水和污泥质量在40天以上的处理阶段进行了监测,以评估联合处理的影响.

主要成果:

同处理始终产生符合二次处理标准的废水 (BOD < 5 mg/L,TSS < 20 mg/L,pH ~7.0).
添加AMD显著改善了酸盐 (PO4) 清除 (>60%) 和病原体清除 (数量级).
没有观察到对废水微生物群落多样性的重大不良影响;污泥表现出更好的沉降性.

结论:

在生物MWW系统中持续同时治疗AMD是可行的和有效的.
这种方法为AMD缓解提供了可行的解决方案,而不会影响MWW处理质量.
该研究提供了关键数据,支持AMD和MW联合治疗的全面实施潜力.

关键词:

批量反应堆批量反应堆金属金属金属我的水是我的水.营养素营养素营养素污水处理污水处理污水处理处理水处理水处理水处理

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