[1]彭赵旭,韩微,姜昆,等.剩余污泥驯化过程中的除磷性能[J].郑州大学学报(工学版),2020,41(05):72-75.
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剩余污泥驯化过程中的除磷性能()
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《郑州大学学报(工学版)》[ISSN:1671-6833/CN:41-1339/T]

卷:
41
期数:
2020年05期
页码:
72-75
栏目:
出版日期:
2020-10-01

文章信息/Info

Title:
Phosphorus Removal During the Recovery Process of Residual Sludge
作者:
彭赵旭韩微姜昆李磊
文献标志码:
A
摘要:
为了探究闲置剩余污泥活性恢复过程中除磷性能的变化,采用厌氧-好氧交替运行的序批式间歇反应器(SBR)进行驯化,考察了比释(吸)磷量、比释(吸)磷速率、污泥浓度、吸释比(好氧吸磷量与厌氧释磷量的比值)等指标的变化。结果发现:在污泥龄控制为12.5 d的情况下,比释磷量与比吸磷量的恢复进程保持同步,其相关系数为0.927。除磷性能在活性污泥更新了16.7%时开始复苏,更新了45. 8%后迅速提高,此时吸释比稳定在1.5~2,活性污泥更新58. 3%时除磷性能基本完全恢复。厌氧段释磷期间pH的下降值可以间接指示吸磷表现,厌氧段pH在硝酸盐膝后的降低值与释磷量间的相关系数为0.675,而氧化还原电位(ORP)无论在厌氧还是好氧过程均无法指示除磷性能的变化。结构稳定的活性污泥是生物除磷性能恢复的前提,驯化过程中污泥浓度趋于稳定时除磷性能开始显著改善。
Abstract:
In order to investigate phosphorus removal performance during the recovery process of residualsludge, an anaerobic -aerobic alternating sequencing batch reactor ( SBR) was used for domestication, and thechanges of specific phosphorus release ( uptake ) amount, specific phosphorus release ( uptake) rate, MLSSand the ratio of phosphorus uptake to phosphorus release ( uptake-release) were investigated. It was found thatwhen the sludge retention time was controlled at 12. 5 d, specific phosphorus release amount and specificphosphorus uptake amount were increased synchronously, the correlation coefficient was 0. 927. Phosphorusremoval performance began to recover when the activated sludge was regenerated by 16. 7%, and improvedobviously after 45. 8%. At this time, the ratio of uptake-release was stable at 1. 5~2. When activated sludgewas regenerated by 58. 3% , phosphorus removal performance almost recovered completely. The decrease of pHduring anaerobic stage could indirectly indicate the performance of phosphorus release. The correlation coeffi-cient between the variation of pH after the nitrate knee and the phosphorus release amount was 0. 675, whilethe oxidation and reduction potential ( ORP) could not indicate phosphorus removal performance either in theanaerobic stage or aerobic stage. A stable structure of activated sludge was the prerequisite for biological phos-phorus removal. When the sludge concentration was stable during domestication process, the phosphorusremoval performance began to improve significantly.
更新日期/Last Update: 2020-10-23