摘要
为了探讨碳源、pH值、污泥浓度以及驯化后污泥对脱氮除磷的影响,在有效容积为10 L的SBR内进行了试验研究,按不同影响因素在不同条件下试验。试验结果表明:随着碳源(乙酸钠)投加量的增加,当C/N值由1.44分别增至4.33、7.22时,对NO3--N的去除率由21%分别提高到81%、99%,但对PO34--P的释放未产生显著影响;在碳源足够的条件下,驯化一个月左右的污泥反硝化速率由13.27 mg/(L.h)增至50 mg/(L.h)左右;当MLSS由1 600 mg/L增至8 000 mg/L时,反硝化作用增强,对NO3--N的去除率由82%提高到95%;在pH值分别为5、7、9三个水平下,pH值=7时对NO3--N的去除率最高,为65%。
To investigate the effect of carbon source, pH, MLSS and acclimated sludge on nitrogen and phosphorus removal, a series of experiments were performed in a SBR with an available volume of 10 L. The results showed that as the carbon source （sodium acetate） dosage increased, the removal rate of NO3- - N increased from 21% （C/N =1.44） to 81% （C/N =4.33） and to 99% （C/N =7.22）. However, carbon source had no significant impact on phosphate release. After about a month of sludge acclimation with sufficient carbon source, the denitrification rate increased from 13.27 mg/（ L·h） to 50 mg/（ L·h）. When MLSS increased from 1 600 mg/L to 8 000 mg/L, the removal rate of NO3- - N in- creased from 82% to 95%. Among the pH values 5,7 and 9, pH of 7 yielded the highest removal rate of NO3- - N （65%）.
出处
《中国给水排水》
CAS
CSCD
北大核心
2012年第13期117-120,共4页
China Water & Wastewater
基金
国家高技术研究发展计划(863)项目(2009AA063804)
关键词
碳源
MLSS
驯化
PH值
反硝化
carbon source
MLSS
acclimation
pH
denitrification
