[1]葛铜岗,孙永利,黄鹏,等.高水力负荷潜流湿地快速净化低污染水体运行研究[J].中国给水排水,2021,37(9):75-81.
　GE Tong-gang,SUN Yong-li,HUANG Peng,et al.Research on Rapid Purification of Low-polluted Water Body by High Hydraulic Load Subsurface Flow Wetland[J].China Water & Wastewater,2021,37(9):75-81.
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高水力负荷潜流湿地快速净化低污染水体运行研究

中国给水排水[ISSN:1000-4062/CN:12-1073/TU] 卷: 第37卷 期数: 2021年第9期 页码: 75-81 栏目: 出版日期: 2021-05-01
Title:
Research on Rapid Purification of Low-polluted Water Body by High Hydraulic Load Subsurface Flow Wetland
作者:
葛铜岗1，孙永利1，黄鹏1，王金丽1,尚巍1，周国华2
(1.中国市政工程华北设计研究总院有限公司，天津300074；2.天津生态城市政景观有限公司，天津300467)
Author(s):
GE Tong-gang1，SUN Yong-li1，HUANG Peng1，WANG Jin-li1,SHANG Wei1，ZHOU Guo-hua2
(1. North China Municipal Engineering Design ＆ Research Institute Co. Ltd., Tianjin 300074, China; 2. Tianjin Eco-city Municipal Landscape Co. Ltd., Tianjin 300467, China)
关键词:
低污染水体; 旁路循环净化系统; 高负荷潜流湿地; 快速运行
Keywords:
low-polluted water body; bypass circulatory purification system; high hydraulic load subsurface flow wetland; rapid operation
摘要:
为提高低污染水体旁路循环运行效能，采用较大粒径卵石构建系统中的潜流湿地基质层，测试在0.5~2.0 m3/(m2·d)较高水力负荷下运行时的净水效果，试验规模为90 m3/d。结果表明，当水力负荷由0.5 m3/(m2·d)增至2.0 m3/(m2·d)时，水体COD、NH3-N、TP、Chl-a的平均去除率均呈现递减趋势，当水力负荷提高到1.2 m3/(m2·d)以上时，平均去除率的降低幅度快速增大；当水力负荷由0.5 m3/(m2·d)增至1.0 m3/(m2·d)时，水体COD、NH3-N、TP、Chl-a的平均负荷削减量均快速增加，水力负荷增至1.0~1.5 m3/(m2·d)时，平均负荷削减量均保持相对稳定，而当水力负荷再增加时，平均负荷削减量均快速降低至较低水平。可见，采用较大粒径卵石作为基质层，将潜流湿地系统水力负荷提高至1.2 m3/(m2·d)左右，以此提升旁路循环净化系统整体运行效能基本可行。
Abstract:
In order to improve the operation efficiency of a bypass circulatory purification system, a subsurface flow wetland with matrix layer of large-size pebbles was constructed in the system, and the purification performance of the subsurface flow wetland was tested under high hydraulic load of 0.5-2.0 m3/(m2·d). When the hydraulic load increased from 0.5-2.0 m3/(m2·d), overall profiles of average removal efficiencies of COD, NH3-N, TP and Chl-a all showed decreasing trends, and the removal efficiencies deceased rapidly especially when the hydraulic load increased to more than 1.2 m3/(m2·d). When the hydraulic load increased from 0.5-1.0 m3/(m2·d), reduction of the average load of COD, NH3-N, TP and Chl-a increased rapidly. Then, reduction of the average load was relatively stable when the hydraulic load increased from 1.0-1.5 m3/(m2·d), while reduction of the average load reduced rapidly to a lower level with further increase of the hydraulic load. Therefore, it was basically feasible to increase the hydraulic load of the subsurface flow wetland system to about 1.2 m3/(m2·d) by using large-size pebbles as the matrix layer, so as to improve the overall operational efficiency of the bypass circulatory purification system.
更新日期/Last Update: 2021-05-01