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[1]寇晓梅,王怡,魏海杉,等.不同水源补水区底泥污染物含量和形态分布特征[J].中国给水排水,2023,39(23):98-103.
　KOUXiao-mei,WANGYi,WEIHai-shan,et al.Content and Forms Distribution Characteristics of Pollutants from Sediment in Areas Recharged by Different Water Sources[J].China Water & Wastewater,2023,39(23):98-103.

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不同水源补水区底泥污染物含量和形态分布特征

中国给水排水[ISSN:1000-4062/CN:12-1073/TU] 卷: 第39卷期数: 2023年第23期页码: 98-103 栏目: 出版日期: 2023-12-01

Title:: Content and Forms Distribution Characteristics of Pollutants from Sediment in Areas Recharged by Different Water Sources

作者:: 寇晓梅^1,2，王怡³，魏海杉³，吴世璋^1,2，邵甜^1,2，梁振豪³; （1.中国电建集团西北勘测设计研究院有限公司，陕西西安 710065；2.陕西省“四主体一联合”河湖生态系统保护与修复校企联合研究中心，陕西西安 710065；3.西安建筑科技大学环境与市政工程学院，陕西西安 710055）

Author(s):: KOU　Xiao-mei^1，2， WANG　Yi³， WEI　Hai-shan³， WU　Shi-zhang^1，2， SHAO　Tian^1，2， LIANG　Zhen-hao³; （1. PowerChina Northwest Engineering Corporation Limited， Xi’an 710065， China； 2. Shaanxi Union Research Center of University and Enterprise for River and Lake Ecosystems Protection and Restoration， Xi’an 710065， China； 3. School of Environmental and Municipal Engineering， Xi’an University of Architecture and Technology， Xi’an 710055， China）

关键词:: 再生水补给区域底泥; 地表水补给区域底泥; 有机物含量; 营养盐含量

Keywords:: sediment from the area recharged by reclaimed water; sediment from the area recharged by surface water; organic matter content; nutrient content

摘要:: 以西安市某景观水体不同水源补水区底泥为研究对象，通过采集不同季节的底泥并分析其中有机碳含量以及氮、磷等营养盐的组成和形态分布，评价不同水源补水区域的底泥污染特征。结果表明，再生水补给区域底泥（RWS）中TOC含量年均值为55.41 mg/g，约为地表水补给区域底泥（SWS）的1.55 倍，且RWS的VS/TS值明显高于SWS的；RWS中TN和TP含量年均值分别为21.77和5.35 mg/g，约为SWS的2.35和1.97倍。同时，RWS中最活跃的离子交换态氮（IEF-N）和弱吸附磷（NH₄Cl-P）含量分别为0.71和0.22 mg/g，为SWS的2.45和3.14倍。此外，RWS中可还原态磷（Fe-P）和有机态磷（NaOH-nrP）含量分别为0.44和0.20 mg/g，为SWS的2.44和1.54 倍。总之，再生水补给区域底泥中TOC、TN和TP含量均明显大于地表水补给区，且活跃态氮、磷含量也明显高于后者。因此，再生水补给的景观水体碳、氮、磷释放风险更大，特别是在高温的夏秋季节，因而建议对再生水补给的景观水体底泥污染物释放进行有效管控。

Abstract:: This paper collected the sediment from areas recharged by different water sources of a landscape water body in Xi’an in different seasons, analyzed its organic carbon content and the composition and distribution of nutrients such as nitrogen and phosphorus, and evaluated the characteristics of sediment pollution. The annual mean TOC content in the sediment from the area recharged by reclaimed water (RWS) was 55.41 mg/g, which was approximately 1.55 times that of the sediment from the area recharged by surface water (SWS). The VS/TS ratio of RWS was significantly higher than that of SWS. The annual average contents of TN and TP in RWS were 21.77 mg/g and 5.35 mg/g, respectively, which were approximately 2.35 times and 1.97 times those of SWS. Meanwhile, the contents of the most active ion exchange nitrogen (IEF-N) and weakly adsorbed phosphorus (NH₄Cl-P) in RWS were 0.71 mg/g and 0.22 mg/g, respectively, which were 2.45 times and 3.14 times those of SWS. In addition, the contents of reductive phosphorus (Fe-P) and organic phosphorus (NaOH-nrP) in RWS were 0.44 mg/g and 0.20 mg/g, respectively, which were 2.44 times and 1.54 times those of SWS. In conclusion, the contents of TOC, TN and TP in RWS were significantly higher than those in SWS, and the contents of “active” nitrogen and phosphorus in RWS were also significantly higher than those in SWS. Therefore, the risk of carbon, nitrogen and phosphorus release in landscape water recharged by reclaimed water was higher, especially in summer and autumn when the weather was high. It is thus suggested to effectively control the release of pollutants from the sediment of landscape water recharged by reclaimed water.

更新日期/Last Update: 2023-12-01