[1]贾永志,吕锡武,吴义锋.生态混凝土护砌模拟改善水源地水质[J].东南大学学报(自然科学版),2009,39(4):844-848.[doi:10.3969/j.issn.1001-0505.2009.04.038]
 Jia Yongzhi,Lü Xiwu,Wu Yifeng.Purification of source water quality in simulated rivers embanked by ecological concrete[J].Journal of Southeast University (Natural Science Edition),2009,39(4):844-848.[doi:10.3969/j.issn.1001-0505.2009.04.038]
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生态混凝土护砌模拟改善水源地水质()
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《东南大学学报(自然科学版)》[ISSN:1001-0505/CN:32-1178/N]

卷:
39
期数:
2009年第4期
页码:
844-848
栏目:
环境科学与工程
出版日期:
2009-07-20

文章信息/Info

Title:
Purification of source water quality in simulated rivers embanked by ecological concrete
作者:
贾永志12 吕锡武1 吴义锋1
1 东南大学能源与环境学院, 南京 210096; 2 江苏省水利厅, 南京 210029
Author(s):
Jia Yongzhi12 Lü Xiwu1 Wu Yifeng1
1 School of Energy and Environment, Southeast University, Nanjing 210096, China
2 Water Resource Department of Jiangsu Province, Nanjing 210029, China
关键词:
生态护砌 硬质护砌 水质改善 生态混凝土
Keywords:
ecological embankment hard embankment water purification ecological concrete
分类号:
X5
DOI:
10.3969/j.issn.1001-0505.2009.04.038
摘要:
通过构建中试规模的生态混凝土预制砌块护砌的河流生态修复实验模型,采用生态混凝土预制球、具孔矩形砌块及4球连体砌块分别护砌开挖的1#,2#,3#河道,并以模拟传统“三面光”护砌的4#河道为实验对照,在可控条件下研究河流生态护砌方式的水质净化及生态效应.实验结果表明:以黄浦江水为研究对象,生态护砌河道(1#,2#,3#)在河流生态系统基本建立的条件下,水力停留时间(HRT)为2 d时,生态护砌河道对CODMn, NH3-N, TN的平均去除率分别超过15%, 70%, 50%,河水浊度均迅速降低至5.0 NTU以下; 实验河道生态护砌面基质中微生物量、TTC-脱氢酶活性以及坡面植被覆盖率和生长状况良好,水质改善效果明显.模拟硬质护砌的实验河道HRT为2 d时,对CODMn,NH3-N,TN的去除率分别为7.4%,25.7%,7.2%,河水浊度改善不明显.
Abstract:
Pilot-scale rivers were constructed to simulate water quality improvement and ecological restoration of rivers embanked by ecological concrete(i.e. eco-concrete), the experimental group including rivers 1, 2 and 3 which were embanked by spheriform eco-concrete prefab-bricks, rectangular eco-concrete prefab-bricks and square eco-concrete prefab-bricks with four hemispheroids,respectively, while river 4 was embanked by traditional concrete as a contrastive group. Water purification and ecological effects of different embanked rivers were studied under controlled conditions. The source water was piped from Huangpu River, being taken as the research object. Under the hydraulic retention time of 2 d, the results show that the average removal rates of CODMn, NH3-N, TN of rivers 1, 2 and 3 are 15%, 70% and 50%, respectively, and the turbidity rapidly decreases to lower than 5.0 NTU; biomass and TTC-dehydrogenase activity and aquatic plants with ecological embankment are all in good condition and make positive effects on ecological restoration, therefore the water quality is significantly improved. On the contrary, the removal rates of CODMn, NH3-N, TN with hard embankment in river 4 are only 7.4%, 25.7% and 7.2% respectively, the turbidity has no obvious improvement.

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备注/Memo

备注/Memo:
作者简介: 贾永志(1975—),男,博士生; 吕锡武(联系人),男,博士,教授,博士生导师,xiwulu@seu.edu.cn.
基金项目: 国家高技术研究发展计划(863计划)重大专项资助项目(2002AA601130)、江苏省水利科技资助项目(2006034).
引文格式: 贾永志,吕锡武,吴义锋.生态混凝土护砌模拟改善水源地水质[J].东南大学学报:自然科学版,2009,39(4):844-848. [doi:10.3969/j.issn.1001-0505.2009.04.038]
更新日期/Last Update: 2009-07-20