腈纶废水生化处理脱氮影响因素研究

Effect Factors of Denitrification Removal from the Biochemical Treatment of Acrylic Fiber Wastewater

针对聚氨酯泡沫微生物固定化载体的序批式生物膜反应器（SBBR），通过平行对比实验，考察生物脱氮过程中DO、碱度、温度、 C/N等因素对实际腈纶废水的处理效果及影响，结果表明：在进水pH＝8， DO在2-4 mg/L，投加碳酸氢钠0.4 g/L，温度为32℃， HRT为48 h的条件下， COD去除率可达到65％以上，氨氮去除率达99％以上。

The effect of operation parameters such as aeration rate , alkalinity, temperature, and C/N ratio, in the process of biological nitrogen removal on acrylic fiber wastewater was studied , using polyurethane foam in Sequencing Batch Biofilm Reactor （ SBBR ） by contrast parallel experiments.The experimental results demonstrated that when DO was 2~4 mg/L, the dosage of sodium bicarbonate was 0.4 g/L, the temperature was 32℃, HRT was 48 h, the removal rate of COD was higher than 65%, and NH3 -N removal rate was higher than 99%.