汤村水库不同工况下水质模拟
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摘要
为探讨汤村水库在汛期及非汛期库区的水质情况,根据汤村水库特点,建立了EFDC二维水质模型,模拟并分析了库区在水体交换期以及水体静止期化学需氧量(COD)及氨氮(NH_3-N)浓度空间变化特点,结果表明:①库区水环境容量随库容增大而增大,污染物浓度随库容增大而减小;②在水体静置期间随水体静止时间的增长,库区NH_3-N浓度的增幅远高于COD浓度的增幅;③汤村库区水体停留时间宜控制在26～30 d为宜,应通过对水库合理的调度运行,相机换水方可有效保证库区水质。研究结果可为汤村水库的调度运行及管理提供科学依据。
In order to study the water quality of Tangcun reservoir during flood season and non-flood season,according to the characteristics of the Tangcun reservoir,the EFDC two-dimensional water quality model was established. The concentration of COD and NH_3-N in the water exchange period and static period were simulated and analyzed. The results showed that: ①The water environment capacity of reservoir area increased with the increase of storage capacity,contaminant concentration decreased with the increase of storage capacity; ② During the water static period,with the growth of water body time,the increase of NH_3-N concentration in the reservoir was much higher than the increase of COD concentration; ③ The water body residence time in Tangcun reservoir should be controlled at 26 ～ 30 d,The water quality of the reservoir could be effectively guaranteed by the reasonable operation of the reservoir. The research results can provide scientific basis for the dispatching operation and management of Tangcun Reservoir.
In order to study the water quality of Tangcun reservoir during flood season and non-flood season,according to the characteristics of the Tangcun reservoir,the EFDC two-dimensional water quality model was established. The concentration of COD and NH_3-N in the water exchange period and static period were simulated and analyzed. The results showed that: ①The water environment capacity of reservoir area increased with the increase of storage capacity,contaminant concentration decreased with the increase of storage capacity; ② During the water static period,with the growth of water body time,the increase of NH_3-N concentration in the reservoir was much higher than the increase of COD concentration; ③ The water body residence time in Tangcun reservoir should be controlled at 26 ～ 30 d,The water quality of the reservoir could be effectively guaranteed by the reasonable operation of the reservoir. The research results can provide scientific basis for the dispatching operation and management of Tangcun Reservoir.
引文
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[2]KIM W,MOON J E,PARK Y,et al.Evaluation of chlorophyll retrievals from Geostationary Ocean Color Imager(GOCI)for the NorthEast Asian region[J].Remote Sensing of Environment,2016,184:482-495.
[3]夏晓芸,解启蒙,杨国范,等.大伙房水库叶绿素a浓度反演模型研究[J].节水灌溉,2018(8):39-42.
[4]任实,刘亮,张地继,等.溪洛渡-向家坝-三峡梯级水库水温分布特性[J].人民长江,2018,49(3):32-36.
[5]谢川,李子君,王滨,等.改进综合标识指数法在地下水方面的应用-以赵川盆地为例[J].节水灌溉,2018(9):56-61.
[6]ZHANG Z L,SUN B W,JOHNSON B E.Integration of a benthic sediment diagenesis module into the two dimensional hydrodynamic and water quality model-CE-QUAL-W2[J].Ecological Modelling,2015,297:213-231.
[7]宫雪亮,孙蓉,芦昌兴,等.基于MIKE21的南四湖上级湖水量水质响应模拟研究[J].中国农村水利水电,2019(1):70-77.
[8]时春景,李红霞,张言,等.永定河上覆水、间隙水和沉积物中重金属的分布特征[J].环境化学,2017,36(1):48-61.
[9]孙玲玲,王树谦,石宝红,等.基于MIKE21FM的黄壁庄水库水动力模拟研究[J].人民珠江,2017,38(9):64-68.
[10]周振民,刘俊秀,范秀.河道生态需水量计算方法及应用研究[J].中国农村水利水电,2015(11):126-129.
[11]付雅君,曹升乐,杨裕恒.基于溶解氧平衡法的南四湖生态需水量研究[J].人民黄河,2018,44(4):79-82.
[12]谢森扬,王翠,王金坑,等.基于EFDC的九龙江口-厦门湾三维潮流及盐度数值模拟研究[J].水动力学研究与进展,2016,31(1):63-75.
[13]张鹏,逄勇,石成春,等.基于EFDC的闽江干流下游DO变化研究[J].水资源保护[J],2016,32(5):91-97.
[14]李林子,钱瑜,张玉超,等.基于EFDC和WASP模型的突发水污染事故影响的预测预警[J].长江流域资源与环境,2011,20(8):1 010-1 016.
[15]唐天均,杨晟,尹魁浩,等.基于EFDC的深圳水库富营养化模拟[J].湖泊科学,2014,26(3):393-400.
[16]黄轶康,李一平,邱利.基于EFDC的长江下游码头溢油风险预测[J].水资源保护,2015,31,(1):91-98.
[17]张鹏飞.汤村水库水温时空分布特征[J].人民黄河,2016,38(5):72-76.
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