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中文摘要：
水体溶解氧指标的优劣对生态净化技术去除有机物、营养盐等污染指标有着显著影响。本研究在盐城市龙冈镇境内蟒蛇河南岸设计构建了饮用水源生态净化工程中试系统,通过长期研究表明：中试采取的前段曝气＋中部跌水＋后段增设沉水植物模式,对蟒蛇河原水DO的改善效果显著,出水的DO在夏、秋、冬、春季分别达到7.02、10.38、10.98、11.43mg/L,平均提升率分别为384.1%、147.7%、31.0%、23.0%;跌水增氧效果与跌水高度显著相关,跌水高度越高,增氧效果越好。
英文摘要：
As an important part of aquatic ecosystem environmental factors, I）O plays a key role in ecological purification technology removing organic matter and nutrient elements. In this research, a source water ecological purification pilot system is designed and constructed in Longgang, Yancheng. long-term studies show that by the pattern of aeration ＋ waterfall ＋ submerged plant, DO of the source water is improved significantly, the effluent DO reaches 7. 02 mg/L, 10. 38 mg/L, 10.98 mg/L and 11.43 mg/L in sum- mer, autumn, winter, and spring, respectively; A significant linear relationship is found between waterfall oxygen increase and the drop height, the higher of the drop, the better the effect of DO increase.
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