曝气吹脱法用于牛场沼液污染物的去除
发布时间：2018-10-30 11:04
【摘要】：氨吹脱是一种有效的污水脱氮处理技术,其中曝气吹脱法又简单易行。为了探究曝气吹脱法用于牛场沼液污染物去除的最优条件,实验研究了温度、曝气量、初始p H等参数对氨氮去除效果的影响,并探讨了投加Ca(OH)2及曝气吹脱对COD、TP的去除作用。结果显示:温度、曝气量是影响氨氮去除效果的关键因素,30℃、4 000曝气量条件下氨氮去除率最高;由于沼液本身p H会受吹脱影响升高,因此,调节初始p H在8~9.5范围内对氨氮去除效果无显著影响;Ca(OH)_2能去除少量COD及TP,吹脱也能对COD去除有一定影响,投加7.7 g/L Ca(OH)_2吹脱后,沼液COD、TP去除率分别为9.7%、14.8%。最优条件30℃、4 000曝气量下,不加Ca(OH)2吹脱能得到70%以上的的氨氮去除率。一般情况下建议不加Ca(OH)_2进行沼液氨吹脱。
[Abstract]:Ammonia blowing is an effective nitrogen removal technology for wastewater. In order to investigate the optimal conditions of aeration stripping method for removing pollutants from biogas liquid of cattle farm, the effects of temperature, aeration rate and initial pH on the removal of ammonia nitrogen were studied. The effects of adding Ca (OH) _ 2 and aeration blowing on COD, were also discussed. Removal of TP. The results show that temperature and aeration rate are the key factors to affect the removal effect of ammonia nitrogen. The removal rate of ammonia nitrogen is the highest at 30 鈩，
本文编号：2299826
[Abstract]:Ammonia blowing is an effective nitrogen removal technology for wastewater. In order to investigate the optimal conditions of aeration stripping method for removing pollutants from biogas liquid of cattle farm, the effects of temperature, aeration rate and initial pH on the removal of ammonia nitrogen were studied. The effects of adding Ca (OH) _ 2 and aeration blowing on COD, were also discussed. Removal of TP. The results show that temperature and aeration rate are the key factors to affect the removal effect of ammonia nitrogen. The removal rate of ammonia nitrogen is the highest at 30 鈩，
本文编号：2299826
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