研究论文
徐镜波.热排放对水库溶解氧的影响[J].环境科学学报,1993,13(3):339-346
热排放对水库溶解氧的影响
- EFFECT OF THERMAL DISCHARGE FROM POWER PLANTS ON DISSOLVED OXYGEN CONTENT OF RESERVOIRS
- 摘要：报道了电厂热排放对水库溶解氧的影响。结果表明,溶解氧含量随水温而变化,建立了T-DO回归方程.除深水库底层外,溶解氧含量通常不小于5.0mg/L.大伙房水库的自然生态环境特征是湖水的季节性分层和夏季底层贫氧.电厂热排放,表层水温增加,使湖水分层更加明显,热成层和化学成层的延长将导致夏季极端气象条件下湖下层氧的耗竭加强.
- Abstract：The effect of thermal discharge from power plants on dissolved oxygen contents of water from reservoirs was studied. Results obtained indicated that the content of dissolved oxygen changed with water temperature. The regres sion equation of T-DO has been fitted. Except the bottom layer of deep reservoirs, the dissolved oxygen was not found to be below 5.0 mg/L. The results showed the deficiency in dissolved oxygen in water from bottom of Dahuofang reservoir during summer. After discharging of hot water, the temperature of the surface layer increased and the stratification was strengthened. Prolonging chemical and thermal stratification of water lead to speed up the hypolimnetic oxygen depletion under extreme climate condition of summer.
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