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针对大唐安峪火电厂液氨储罐、污水调节池泄漏的液氨和废污水,采用地下水一维渗流二维水动力弥散溶质运移模型预测了地下水污染情况。结果表明,液氨进入含水层5年后,污染晕漂移6 800m,运移范围为0.866km2,水质污染超标范围为0.150km2;进入含水层6.34年后,液氨浓度可达Ⅲ类水质标准要求。废污水进入含水层5年后,地下水中COD污染超标范围为0.009km2,运移范围为0.014km2;进入含水层10年后,地下水中COD污染超标范围为0.016km2,运移范围为0.023km2。可见液氨储罐泄漏对地下水水质影响较大,污水调节池泄漏对地下水水质影响较小。
Aiming at the liquid ammonia and waste water leaking from the liquid ammonia storage tank and the wastewater regulation tank of Datang Anyu Thermal Power Plant, the groundwater pollution is predicted by the two-dimensional hydrodynamic dispersion solute transport model of one-dimensional seepage flow of groundwater. The results show that after entering the aquifer for 5 years, the liquid ammonia migration is 6 800m, the migration range is 0.866km2, and the water pollution exceeded the standard range of 0.150km2. After entering the aquifer for 6.34 years, the liquid ammonia concentration can meet the Grade III water quality standard . After 5 years of wastewater entering the aquifer, COD pollution in groundwater exceeded the standard range of 0.009km2 and the transport range was 0.014km2. After entering the aquifer for 10 years, COD pollution in groundwater exceeded the scope of 0.016km2 and the transport range was 0.023km2. It can be seen that the leakage of liquid ammonia storage tank has a great impact on the quality of groundwater, and the leakage of sewage regulation tank has little effect on the quality of groundwater.