异植物醇高浓氨氮废水预处理工艺研究

Pretreatment Process of Isophytol Wastewater with High Concentration of Ammonia-Nitrogen

对异植物醇高浓氨氮废水进行预处理,提前降低其COD值及氨氮浓度。结果表明,曝气耦合铁碳微电解法中pH值调整到8时,对降低异植物醇高浓氨氮废水的COD值的效果最好;对于脱氮吹脱法,曝气30 min时达到较好除氨氮效果;对于120水样和130水样,可以选择不锈钢丝网作为填料进行除沫。

We pretreated isophytol wastewater with high concentration of ammonia-nitrogen,and reduced COD value and ammonia-nitrogen concentration in advance.The results show that the effect of reducing COD value of isophytol wastewater with high concentration of ammonia-nitrogen is the best when the pH value is adjusted to 8 in the aeration coupled iron-carbon microelectrolysis process.While the ammonia-nitrogen removal is more effective when the aeration time is 30 min in the denitrification and stripping process.Moreover,for the 120 and 130 water samples,the stainless steel wire mesh can be selected as a filler for defoaming.