| 锁磷剂对杭州西湖底泥磷释放的控制效果 |
| |
| 引用本文： | 朱广伟,李静,朱梦圆,龚志军,许海,杨桂军,张运林,秦伯强.锁磷剂对杭州西湖底泥磷释放的控制效果[J].环境科学,2017,38(4):1451-1459. |
| |
| 作者姓名： | 朱广伟 李静 朱梦圆 龚志军 许海 杨桂军 张运林 秦伯强 |
| |
| 作者单位： | 中国科学院南京地理与湖泊研究所湖泊与环境国家重点实验室, 南京 210008,中国科学院南京地理与湖泊研究所湖泊与环境国家重点实验室, 南京 210008;江南大学环境与土木工程学院, 无锡 214122,中国科学院南京地理与湖泊研究所湖泊与环境国家重点实验室, 南京 210008,中国科学院南京地理与湖泊研究所湖泊与环境国家重点实验室, 南京 210008,中国科学院南京地理与湖泊研究所湖泊与环境国家重点实验室, 南京 210008,江南大学环境与土木工程学院, 无锡 214122,中国科学院南京地理与湖泊研究所湖泊与环境国家重点实验室, 南京 210008,中国科学院南京地理与湖泊研究所湖泊与环境国家重点实验室, 南京 210008 |
| |
| 基金项目： | 国家水体污染控制与治理科技重大专项（2012ZX07101-007-005） |
| |
| 摘 要： | 为探索杭州西湖高有机质底泥内源磷释放的控制技术,分别于春、夏、冬这3个季节采集西湖8个湖区的原状泥柱,进行室内磷释放过程连续培养,研究锁磷剂Phoslock对底泥磷释放通量的控制效果.结果发现,西湖底泥冬、春季磷释放通量较小,全湖平均分别为0.13 mg·(m~2·d)~(-1)和0.29 mg·(m~2·d)~(-1),而夏季则大幅度增高,全湖平均释放通量为3.29mg·(m~2·d)~(-1),每日全湖释放磷可达23.7 kg(以P计);空间上,磷释放通量受底泥有机质含量控制,底泥有机质污染重的湖区总体上磷释放通量大,而与底泥磷含量及有效态磷含量关系不大;投加630 g·m~(-2)的锁磷剂能够有效控制西湖底泥磷释放,在3个季节所有点位,均能将上覆水磷含量控制在0.010 mg·L~(-1)以下,夏季磷释放通量大的时期,锁磷剂的控磷效果达98%.本研究结果表明,即便对于高有机质含量、"香灰土"特征的西湖沉积物,锁磷剂的控磷效果也比较好.在西湖富营养化治理工程中,可以考虑在局部湖湾投放应用.
|
| 关 键 词： | 杭州西湖 底泥 磷 内源负荷 锁磷剂 |
| 收稿时间： | 2016/9/17 0:00:00 |
| 修稿时间： | 2016/11/12 0:00:00 |
Efficacy of Phoslock® on the Reduction of Sediment Phosphorus Release in West Lake, Hangzhou, China |
| |
| ZHU Guang-wei,LI Jing,ZHU Meng-yuan,GONG Zhi-jun,XU Hai,YANG Gui-jun,ZHANG Yun-lin and QIN Bo-qiang.Efficacy of Phoslock® on the Reduction of Sediment Phosphorus Release in West Lake, Hangzhou, China[J].Chinese Journal of Environmental Science,2017,38(4):1451-1459. |
| |
| Authors: | ZHU Guang-wei LI Jing ZHU Meng-yuan GONG Zhi-jun XU Hai YANG Gui-jun ZHANG Yun-lin and QIN Bo-qiang |
| |
| Affiliation: | State Key Laboratory of Lake Environment and Science, Nanjing Institute of Geography and Limnology, Chinese Academy of Sciences, Nanjing 210008, China,State Key Laboratory of Lake Environment and Science, Nanjing Institute of Geography and Limnology, Chinese Academy of Sciences, Nanjing 210008, China;College of Environmental and Civil Engineering, Jiangnan University, Wuxi 214122, China,State Key Laboratory of Lake Environment and Science, Nanjing Institute of Geography and Limnology, Chinese Academy of Sciences, Nanjing 210008, China,State Key Laboratory of Lake Environment and Science, Nanjing Institute of Geography and Limnology, Chinese Academy of Sciences, Nanjing 210008, China,State Key Laboratory of Lake Environment and Science, Nanjing Institute of Geography and Limnology, Chinese Academy of Sciences, Nanjing 210008, China,College of Environmental and Civil Engineering, Jiangnan University, Wuxi 214122, China,State Key Laboratory of Lake Environment and Science, Nanjing Institute of Geography and Limnology, Chinese Academy of Sciences, Nanjing 210008, China and State Key Laboratory of Lake Environment and Science, Nanjing Institute of Geography and Limnology, Chinese Academy of Sciences, Nanjing 210008, China |
| |
| Abstract: | Famous as the world cultural heritage, West Lake in Hangzhou city has plenty of soft sediments with high organic matter content. To search the countermeasures for internal phosphorus release reduction from the sediment, the sediment core incubation was conducted to understand the efficacy of Phoslock® on internal phosphorus release in spring, summer and winter, respectively. The results showed that the internal phosphorus release fluxes in winter and spring were relatively low, with averaged values in the entire lake of 0.13 mg·(m2·d)-1 and 0.29 mg·(m2·d)-1, respectively, while the release flux was 3.29 mg·(m2·d)-1 in summer, more than ten times higher than those in spring and winter. It was estimated that 23.7 kg of phosphorus could be released from sediment in the entire lake every day in summer. Spatially, the phosphorus release flux was related to organic matter contents in sediments, but not the phosphorus or bioavailable phosphorus contents in sediments in West Lake. With Phoslock® added at the rate of 630 g·m-2, sediment phosphorus release was successfully controlled, which reduced the phosphorus concentration in the lake water to less than 0.010 mg·L-1. Especially during summer time, the sediment phosphorus release was reduced by 98% after Phoslock® application. The research suggested that Phoslock® is powerful for phosphorus control even for sediments with high organic matter content, which could be considered in ecological restoration of WEst Lake. |
| |
| Keywords: | West Lake sediment phosphorus internal loading Phoslock® |
| 本文献已被 CNKI 等数据库收录！ |
| 点击此处可从《环境科学》浏览原始摘要信息 |
|
点击此处可从《环境科学》下载全文 |
|
