摘要
在优化复合药剂(聚合氯化铝(PAC)+聚合氯化铁(PFC)+聚丙烯酰胺(PAM))投加位点的基础上,考察了关键因素(进水TP质量浓度、pH值和Al,Fe,P物质的量之比)对PAC+PFC+PAM组合强化出水除磷效能的影响,并结合XRD物相分析,初步探讨了PAC+PFC+PAM的除磷机理.结果表明,曝气生物滤池(BAF)池出水点为PAC+PFC+PAM最佳投加位点;BAF池出水最优除磷工艺条件为pH值8.0,n(Al)∶n(Fe)∶n(P)=0.76∶0.50∶1.00,最优工艺条件下的TP去除率为98.72%,且除磷效率不受进水TP质量浓度变化的影响,出水TP质量浓度低于2.0 mg/L;PAC+PFC+PAM化学除磷的沉淀物中的主要成分为Fe r PO 4(OH)3 r-3和Al(OH)3.
On the basis of optimizing the dosage sites of composite chemicals(PAC+PFC+PAM),the total phosphorus(TP)removal efficiency was investigated with different pH,initial TP concentrations,Al,Fe,P molar ratio.Combined with the XRD phase analysis.The phosphorus removal mechanism of PAC+PFC+PAM was preliminary explored.The results show that the outlet point of BAF tank was the best adding point of PAC+PFC+PAM.The n(Al)∶n(Fe)∶n(P)=0.76∶0.50∶1.00,and the pH was 8.0.The TP removal efficiency was 98.72%.Moreover,the TP removal efficiency was hardly affected by the change of TP concentration of the influent water.The TP content of the effluent water was lower than 2.0 mg/L.In addition,the XRD results showed that the main components of the precipitates were Fe r PO 4(OH)3 r-3 and Al(OH)3.
作者
王梓妍
周智萱
胡文勇
周瑜
WANG Ziyan;ZHOU Zhixuan;HU Wenyong;ZHOU Yu(School of Biological Recourse and Environmental Science,Jishou University,Jishou 416000,Hunan China)
出处
《吉首大学学报(自然科学版)》
2025年第1期51-57,共7页
Journal of Jishou University(Natural Sciences Edition)
基金
湖南省大学生创新创业训练项目(3224018)
高层次人才引进科研启动项目(1122005)。
关键词
酿造废水
化学混凝
总磷
混凝剂
brewing wastewater
chemical coagulation
total phosphorus
coagulant
