摘要
在SBR法处理啤酒废水和化工废水过程中 ,进水 pH值越高 ,两种废水的COD去除率越低。控制整个反应周期混合液的 pH值与进水 pH值 ( 3 5～ 6 5)一致时 ,将进一步降低两种废水的COD的去除率 ,对化工废水的影响尤其显著。试验过程中 pH值过高和过低的进水皆出现活性污泥的活性抑制和污泥上浮 。
In SBR process treating wastewater of brewery or chemical industry, the pH during the reaction course will go down for brewery wastewater treatment and will rise up for chemical wastewater treatment when the inlet pH is in range of 3.5 to 5.0. The COD removal for both brewery and chemical wastewater will drop off as the pH value falling down. When the inlet pH is in range of 5.0 to 9.0, in the course treating both brewery and chemical wastewater, the pH value will drop close to 6.0 to 8.0, at this case the COD removal is high to 90% and the status of activated sludge is favorable. When the inlet pH is higher than 9.0, the pH in the course trends to go down and the higher the inlet pH is, the lower the COD removal. If the pH of MLSS in the reaction course is controlled in the same level as the inlet (3 5 to 6 5), the COD removal will drop down more especially for chemical wastewater. In our experiment, whether the inlet pH is too high or too low the activity inhibition and upturning of activated sludge were observed, but no sludge bulking was detected.
出处
《给水排水》
CSCD
北大核心
2001年第2期54-57,共4页
Water & Wastewater Engineering
基金
国家自然科学基金资助项目(59778024)
