Development of a System for Controlling Dissolved‐Oxygen Content of Water
Development of a System for Controlling Dissolved‐Oxygen Content of Water
复制标题
控制水中溶解氧含量的系统的开发
DOI：
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发表时间：
1961
期刊：
影响因子：
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通讯作者：
D. I. Mount
中科院分区：
文献类型：
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作者：
D. I. Mount
摘要研制了一种连续水流溶解氧含量控制系统，并进行了试验。它本质上是通过部分真空的连续水流。每天两次调整，使废水的溶解氧含量保持在所需浓度的0.05 p. p.m.内。获得了0.5 ppm的最小氧含量和大于10升/分钟的流速。提出了改进方案，以提高系统的效率和容量。观察了四种鱼类在低氧浓度下的行为。当氧含量降低到低于3 p. p.m.时，通气速率和幅度迅速增加，活动减少，正常颜色褪色，停止进食，鱼对运动和振动等刺激无反应。氧气浓度低于下午3时似乎是关键的这四个物种在休息条件。
Abstract A system for controlling the dissolved-oxygen content of a continuous flow of water was developed and tested. It is essentially a continuous flow of water through a partial vacuum. Two daily adjustments maintain the dissolved-oxygen content of the effluent water within 0.05 p.p.m. of the desired concentration. Minimum oxygen content of 0.5 p.p.m. and flow rates greater than 10 liters a minute were obtained. Modifications are suggested to improve the efficiency and capacity of this system. The behavior of four species of fish at reduced oxygen concentrations was observed. When the oxygen content was decreased below 3 p.p.m., ventilation rate and amplitude increased rapidly, activity decreased, normal colors faded, feeding ceased, and the fish became unresponsive to such stimuli as movement and vibration. Oxygen concentrations below 3 p.p.m. appear to be critical for these four species in resting conditions.