潜流人工湿地在城市污水三级处理中的应用

生态学杂志

潜流人工湿地在城市污水三级处理中的应用

付国楷¹;周琪²;杨殿海²

¹重庆大学城市建设与环境工程学院，重庆 400045; ²同济大学污染控制与资源化研究国家重点实验室，上海 200092

收稿日期:2007-03-25 修回日期:1900-01-01 出版日期:2008-02-10 发布日期:2008-02-10

Application of subsurface flow constructed wetland in tertiary treatment of urban wastewater.

FU Guo-kai¹; ZHOU Qi²; YANG Dian-hai²

¹Faculty of Urban Construction and Environmental Engineering, Chongqing University, Chongqing 400045, China; ²State Key Laboratory of Pollution Control and Resource Reuse, Tongji University, Shanghai 200092, China

Received:2007-03-25 Revised:1900-01-01 Online:2008-02-10 Published:2008-02-10

摘要/Abstract

摘要： 采用页岩/钢渣强化潜流人工湿地作为城市污水处理厂三级处理工艺。结果表明：在平均水力负荷为0.32 m·d^-1的条件下，当进水有机物（COD_cr）、总氮（TN）、总磷（TP）平均浓度为33.9、15.1和1.57 mg·L^-1时，出水COD_cr平均浓度为13.6 mg·L^-1，去除率为60%，面积速率常数K_A值为0.3 m·d^-1，温度对COD_cr的去除影响不明显；出水TN浓度在5.4～14.3 mg·L^-1之间波动，K_A值为0.09 ～0.31 m·d^-1，去除率受温度的影响较大，随着进水硝态氮比例的提高和运行时间的延长，湿地对TN的去除效率有上升趋势；稳定阶段出水TP浓度为0.6 mg·L^-1，去除率为50%，K_A为0.26 m·d^-1，温度对TP去除影响不大。

关键词: 种植养殖系统, 红树林, 细菌生态学

Abstract: A pilot scale shale/slag-filled subsurface flow constructed wetland was used in the tertiary treatment of urban wastewater. The results showed that under the condition of average hydraulic loading rate being 0.32 m·d^-1 and when the average concentrations of COD_cr, TN and TP in the influent were 33.9, 15.1 and 1.57 mg·L^-1, respectively, the average concentration of COD_cr in the effluent was 13.6 mg·L^-1, its removal rate was 60%, and the first-order areal rate constant K_A was 0.3 m·d^-1. The removal of COD_cr was less affected by perature. The TN concentration in the effluent fluctuated from 5.4 to 14.3 mg·L^-1, K_Afluctuated from 0.09 to 0.31 m·d^-1, and the N removal was negatively affected by lower temperature while positively affected by higher NO_x-N/TN ratio and longer operation time. At steady stage, the average concentration of TP in the effluent was 0.6 mg·L^-1, its removal rate was 50%, andK_A was 0.26 m·d^-1. Temperature had less effect on TP removal.

Key words: Plant-culture system, Mangrove, Bacteria ecology

付国楷;周琪;杨殿海 . 潜流人工湿地在城市污水三级处理中的应用[J]. 生态学杂志.

FU Guo-kai¹; ZHOU Qi²; YANG Dian-hai² . Application of subsurface flow constructed wetland in tertiary treatment of urban wastewater.[J]. cje.

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