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| 矿集区湿地沉积物中污染物释放行为模拟研究 |
| Simulation of Pollutant Release Behavior in Wetland Sediments from Ore concentrated Area |
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| DOI: |
| 中文关键词: 污染物 释放规律 模拟实验 沉积物 网湖湿地 矿集区 |
| 英文关键词: Pollutant Release pattern Simulation experiment Sediments Wanghu Wetland Ore concentrated area |
| 基金项目:国家自然科学基金资助项目(41603117);湖北省高等学校省级教学研究基金资助项目(2022436);湖北理工学院校级教育教学改革研究基金资助项目(2022A02);湖北省自然科学创新发展联合基金资助项目(2022CFD049,2023AFD030);湖北省水利重点科研基金资助项目(HBSLKY202332);湖北省自然科学基金资助项目(No2023AFB1048) |
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| 中文摘要: |
| 矿集区湿地沉积物中污染物的释放行为是湿地生态治理的关键问题。本研究使用自制实验装置,探讨了网湖湿地沉积物中营养元素和金属元素在不同温度和扰动情景下的释放行为。结果显示:在40 ℃静置情景下,TP和TN的最高值分别为063 mg/L和297 mg/L,As、Cu、Mn及Pb的最〖JP〗高值分别为0041 mg/L、0343 mg/L及0367 mg/L,〖JP〗导致水质降至劣Ⅴ类水平;在40 ℃扰动情境下,各元素的释放加剧,释放过程呈现出往复上升的现象;水温与营养元素的释放呈二次相关关系,与金属元素的释放呈线性相关,表明营养元素的释放受水温变化影响更显著。 |
| 英文摘要: |
| The release behavior of pollutants in wetland sediments from ore concentration area was a key issue in wetland ecological management. This study used self made experimental devices to investigate the release behavior of nutrients and metal elements in sediments from Wanghu Wetland under different temperatures and disturbance conditions. Results showed that at a static state and 40 ℃,the maximum concentrations of TP, TN, As,Mn and Pb were 〖JP〗063mg/L, 297mg/L,0041mg/L,0343mg/L and 0367mg/L, 〖JP〗respectively, causing the water quality to drop to worse than Class Ⅴ. Under a disturbance state and 40 ℃, the release degree of each element intensified, and the concentration showed a reciprocating upward trend during the release process. Water temperature had a quadratic 〖GK!87mm〗correlation with the release of nutrients and a linear correlation with the release of metal elements, indicating that the release of nutrients was more significantly affected by changes in water temperature. |
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