摘要
分析了水解酸化 /UASB/SBR工艺处理印染废水过程中发生污泥膨胀的可能原因,并通过试验考察了投加氮和磷与预曝气对污泥膨胀的控制效果。结果发现只投加氮、磷未能控制污泥膨胀,而预曝气则可使污泥膨胀得到很好的控制。结合水质分析的结果,得知污泥膨胀的原因是硫化物浓度过高。
Sludge bulking always occurs in hydrolytic acidification / UASB / SBR process for printing and dyeing wastewater treatment. The cause for sludge bulking was analyzed, and addition of nitrogen and phosphorus, and preaeration used for controlling sludge bulking was investigated. It is found that sludge bulking control cannot be achieved only by addition of nitrogen and phosphorus, but can be effectively by preaeration. From water quality analysis, it is learned that sludge bulking is due to ultra-high concentration of sulfide.
出处
《中国给水排水》
CAS
CSCD
北大核心
2005年第2期95-96,共2页
China Water & Wastewater
关键词
印染废水
污泥膨胀
硫化物
预曝气
序批式反应器
printing and dyeing wastewater
sludge bulking
sulfide
preaeration
sequencing batch reactor
