膜式氧合器不同解吸方式对水产养殖水体中氨氮去除效果的影响

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，并比较对其氨氮的去除效果。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。

Ammonia-N removal effects from aquaculture water with 3 different methods by membrane oxygenator

Using membrane oxygenator, 3 stripping methods—O2 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 O2 in aquaculture farms.