改性UCT工艺处理糖蜜废水中营养物去除的补救措施  

The Remedial Measure for Deterioration of Nutrient Removal in the Modified UCT Process with Molasses Wastewater

作　　者：Devi Muhtariana(莉雅) 张伊帆 郝鑫 李永峰[1] Devi Muhtariana;ZHANG Yi -fan;HAO Xin;LI Yong -feng(Forestry School,Northeast Forestry University,Harbin,150040,China)

机构地区：[1]东北林业大学林学院,哈尔滨150040

出　　处：《中国甜菜糖业》2018年第4期23-30,共8页China Beet & Sugar

基　　金：黑龙江省自然科学基金(2013E54);全国大学生创新项目(201810225114).

摘　　要：采用步进式进样方法,在步进进料比为35%:35:30%时,在营养物去除方面表现出良好的性能,相应的NH4-N^+、TN和PO4^3-P分别提高到最佳97.3%、81.8%和89.56%。在最佳投喂比下,在三个好氧区降低DO浓度为0.7~1.0mg/L,使整个营养盐转化为劣化状态,从而刺激SND,缓解脱氮恶化,不利于除磷。在改变SND状态的基础上(在好氧区2使DO浓度恢复到2mg/L),在厌氧区增加分批进料的比例从35%:35%:30%增至45%:35%:20%,以提高除磷效果。结果表明,磷和TN的总去除率平均回收率分别为61.3%和66.8%,由于提高了低DO和少量碳源引起的丝状茵活性,SVI从异常状态恢复。The pilot scale modified UCT with step -feed method was obtained a good performance in the nutrient removal when the ratio of step -feed wasshifting to 35%:35:%:30%,the corresponding NH4 PO43-P was increased to optimal 97.3%,81.8%,and 89.56% respectively.At the optimal -N +,TN and ratio of step - feed,the whole nutrient was transformed into deteriorating state owing to lower COD/TN.By reducing the DO concentration to 0.7-1.0mg/L in the three aerobic zones to stimulate the SND simply relieved the exacerbation in nitrogen removal not for phosphorus removal.The ratio of step -feed was changed from 35%:35%:30% to 45%:35:20%to increase carbon source in anaerobic zone for improving phosphorus removal on the foundation of changing the state of SND a few (recovery the DO concentration to 2mg/L in aerobic zone 2).As a result ,the whole removing efficiency of phosphorus and TN were recovery to averagely 61.3%and 66.8%,the SVI was recovery from state of exception thanks to enhancing the activity of filamentous bacteria caused by low DO and few carbon source.

关 键 词：分批进料 同步硝化反硝化 污泥体积指数(VI) 营养物去除 

分 类 号：TS245.2[轻工技术与工程—制糖工程]