湖泊热浪影响下锁磷剂对蔚然湖磷的钝化效果研究
Study on the Passivation Effect of Phosphorus Locking Agents on Phosphorus in Weiran Lake under the Influence of Lake Heatwaves
DOI: 10.12677/aep.2025.159137, PDF,    科研立项经费支持
作者: 王梓轩, 王毅鑫, 韩燕青*：滁州学院土木与建筑工程学院，安徽 滁州
关键词: 湖泊热浪；磷；锁磷剂；Lake Heatwaves； Phosphorus； Phosphorus Locking Agents
摘要: 受持续的温室气体排放影响，全球气候不断变暖，湖泊热浪事件频发，深度影响湖泊各类功能的发挥。本研究以滁州学院校园湖泊蔚然湖为研究对象，探究镧系锁磷剂(LMB)在不同温度情景(常温25℃，热浪期35℃)下对磷的钝化效果和机制。室内模拟实验结果显示，30℃组水体总溶解性氮TDN、总溶解性磷TDP和可溶性磷酸盐SRP浓度分别比25℃组高11.26%、18.55%和15.11%，30℃ + LMB组水体TDN浓度比25℃ + LMB组高9.70%，水体TDP浓度和SRP浓度比25℃ + LMB组分别降低46.55%和77.74%。本研究表明湖泊热浪促进了蔚然湖沉积物氮磷释放，提高水体氮磷浓度，但镧系锁磷剂仍然有着较好的控磷效果，可显著抑制沉积物磷释放，降低蔚然湖水体磷浓度。
Abstract: Affected by persistent greenhouse gas emissions, global warming continues to intensify, leading to frequent lake heatwave events that profoundly impact various lake functions. This study focuses on Weiran Lake, a campus lake at Chuzhou University, to investigate the passivation effect and mechanisms of lanthanum-modified bentonite (LMB) on phosphorus under different temperature scenarios (normal temperature: 25˚C; heatwave period: 35˚C). Indoor simulation experiments revealed that the concentrations of total dissolved nitrogen (TDN), total dissolved phosphorus (TDP), and soluble reactive phosphorus (SRP) in the 30˚C group were 11.26%, 18.55%, and 15.11% higher, respectively, than those in the 25˚C group. In the 30˚C + LMB group, the TDN concentration was 9.70% higher than in the 25˚C + LMB group, while the TDP and SRP concentrations decreased by 46.55% and 77.74%, respectively, compared to the 25˚C + LMB group. The study reveals that lake heatwaves promote the release of nitrogen and phosphorus from sediments in Weiran Lake, increasing their concentrations in the water. However, LMB still demonstrates effective phosphorus control, significantly inhibiting sediment phosphorus release and reducing phosphorus levels in the lake water.
文章引用：王梓轩, 王毅鑫, 韩燕青. 湖泊热浪影响下锁磷剂对蔚然湖磷的钝化效果研究[J]. 环境保护前沿, 2025, 15(9): 1223-1230. https://doi.org/10.12677/aep.2025.159137

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