利用WASP模型进行南印度水库富营养化控制的水质模拟

IF 1.6 Q3 WATER RESOURCES Water Practice and Technology Pub Date : 2023-10-24 DOI:10.2166/wpt.2023.173
Deepa Varsa K. C., Abdul Wahid Abdul Rahiman, ArunBabu E., Antony Kishoare J., Priyadharshini N.
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引用次数: 0

摘要

摘要利用水质分析模拟程序(WASP)对Krishnagiri水库工程(KRP)的富营养化指标进行了分析。将储层划分为6段进行指标模拟,利用2015 - 2018年的现场测量数据对模型进行校准,并利用2019 - 2022年的现场测量数据对模型进行验证。结果表明,模型预测值与实测值吻合较好,表明了模型的可靠性。该研究评估了养分负荷对溶解氧、硝酸盐、磷酸盐和叶绿素-a的影响。模拟了4种养分负荷情景,其中最有效的情景(情景4)是养分负荷减少75%,使再循环速率提高1.47%,叶绿素a浓度降低88%。研究结果表明,维持2.5 mg/L以下的硝酸盐和0.75 mg/L以下的磷酸盐有助于将KRP水库的营养状态从富营养化恢复到中营养化。总体而言,该研究证明了WASP模型在开发养分负荷情景中的应用,可以有效地管理水库水质。这些发现可以帮助决策者和管理者做出明智的决定,减少营养负荷,恢复富营养化水库的营养状态。
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Water quality simulation using the WASP model for eutrophication control in a South Indian Reservoir
Abstract The study focused on analysing the eutrophication indicators of the Krishnagiri Reservoir Project (KRP) using the Water Quality Analysis Simulation Program (WASP). The reservoir was divided into six segments to simulate the indicators, and field measurements from 2015 to 2018 were used to calibrate the model while 2019 to 2022 were used to validate it. The results showed that the model predictions were in good agreement with the measured values, indicating the reliability of the model. The study assessed the impact of nutrient loads on dissolved oxygen, nitrate, phosphate, and chlorophyll-a. Four nutrient loading scenarios were simulated, and the most effective scenario (Scenario 4) involved a 75% reduction in nutrient load, which increased the reaeration rate by 1.47% and decreased chlorophyll-a concentrations by 88%. The study concluded that maintaining nitrates below 2.5 mg/L and phosphates below 0.75 mg/L could help restore the KRP reservoir's trophic status from hypereutrophic to mesotrophic. Overall, the study demonstrated the use of the WASP model in developing nutrient loading scenarios to manage reservoir water quality effectively. The findings could help policymakers and managers make informed decisions about reducing nutrient loads and restoring the trophic status of eutrophicated reservoirs.
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来源期刊
CiteScore
2.30
自引率
6.20%
发文量
136
审稿时长
14 weeks
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