【摘要】 研究了膜式氧合器 3种不同解吸方式 ,即 :O2 对流法、真空抽取法和酸吸收法去除水产养殖水体中氨氮的影响因素 ,并比较其对氨氮的去除效果。结果表明 ,氨氮初始浓度和pH是氨氮去除率的主要影响因素 ;当 pH >9时 ,O2 对流法和真空抽取法对氨氮去除效果比 pH <9时要高 ,而酸吸收法不论 pH高低时比其它 2种方法都能获得较高的氨氮去除率。更多还原

【Abstract】 Using membrane oxygenator, 3 stripping methods—O 2 sweeping, vacuum extracting and acid absorbing—were employed to remove the ammonia-N from aquaculture water. The results show that for a single stripping method, the ammonia-N removal efficiency is mainly dependent on the initial ammonia-N concentration and pH. The methods of oxygen sweeping and vacuum extracting are more effective at pH>9. The method of acid stripping is the most effective no matter how pH varies. It comes to the conclusion that oxygenators may be used for ammonia-N removal accompanied with enrichment of O 2 in aquaculture farms.更多还原