人工湿地系统以铝污泥为基质的几个关键问题

被引:13
|
作者
赵晓红 [1 ,2 ]
赵亚乾 [1 ,2 ]
王文科 [1 ]
杨永哲 [2 ,3 ]
Akintunde Babatunde [2 ,4 ]
胡沅胜 [2 ,5 ]
Lordwin Kumar [2 ,6 ]
机构
[1] 长安大学旱区地下水文与生态效应教育部重点实验室
[2] 都柏林大学土木结构和环境工程系Dooge水研究中心
[3] 西安建筑科技大学环境与市政工程学院
[4] 卡迪夫大学工程学院水环境研究中心
[5] 北京建筑大学城市雨水系统与水环境省部共建教育部重点实验室
[6] 不详
基金
中央高校基本科研业务费专项资金资助;
关键词
铝污泥; 人工湿地; 磷; 堵塞; 再利用;
D O I
10.19853/j.zgjsps.1000-4602.2015.11.033
中图分类号
X703 [废水的处理与利用];
学科分类号
摘要
在人工湿地污水处理过程中,铝污泥泥饼可作为湿地植物生长的基质以及微生物膜附着生长的多孔载体。经过对铝污泥人工湿地系统的深入研究,旨在阐明此类人工湿地应用的主要关键问题:1铝污泥是否适用于人工湿地?2铝能否从铝污泥中滤出?3铝污泥在湿地中的使用寿命有多久?4磷是否可以从使用过的铝污泥中回收再利用?5是否会有堵塞现象的发生,该如何解决?结果表明:从物理、化学测试结果来看,铝污泥是一种适合的人工湿地填料;湿地系统出水中铝确有滤出,但这只发生在试验最初的1014 d之内,且浓度大大低于饮用水准则中规定的限值;铝污泥在人工湿地中的使用寿命为417年;从使用过的铝污泥中提取磷是可行的;湿地在运行中会发生堵塞,可考虑采用系统轮空休息及替换为反粒度砾石床延缓堵塞。
引用
收藏
页码:131 / 136
页数:6
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