[1]彭赵旭,王 炬,娄天宇,等.进水碳磷比对SBR 系统污泥沉降及脱氮除磷性能的影响[J].郑州大学学报(工学版),2022,43(06):77-82.[doi:10.13705/j.issn.1671-6833.2022.03.012]
　PENG Zhaoxu,WANG Ju,LOU Tianyu,et al.Effect of Influent Carbon-phosphorus Ratio on Sludge Sedimentation and Nitrogen and Phosphorus Removal in SBR System[J].Journal of Zhengzhou University (Engineering Science),2022,43(06):77-82.[doi:10.13705/j.issn.1671-6833.2022.03.012]

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进水碳磷比对SBR 系统污泥沉降及脱氮除磷性能的影响()

分享到：

《郑州大学学报(工学版)》[ISSN:1671-6833/CN:41-1339/T]

卷:

43

期数:

2022年06期

页码:

77-82

栏目:

出版日期:

2022-09-02

文章信息/Info

Title:

Effect of Influent Carbon-phosphorus Ratio on Sludge Sedimentation and Nitrogen and Phosphorus Removal in SBR System

作者:

彭赵旭;  王 炬;  娄天宇;  姜 昆;  牛宁琪

郑州大学水利科学与工程学院;

Author(s):

PENG Zhaoxu;  WANG Ju;  LOU Tianyu;  JIANG Kun;  NIU Ningqi

School of Water Conservancy and Engineering, Zhengzhou University, Zhengzhou 450001, China

关键词:

磷冲击负荷; 活性污泥; SBR反应器; 脱氮除磷; 污泥沉降性

Keywords:

phosphorus shock loading;  activated sludge;  SBR reactor;  nitrogen and phosphorus removal;  sludge settleability

分类号:

X773

DOI:

10.13705/j.issn.1671-6833.2022.03.012

文献标志码:

A

摘要:

为了探究磷冲击负荷对活性污泥系统特性的影响,采用厌氧-好氧运行的 SBR 进行试验,通过改变进水磷含量,研究了在进水碳磷比(质量浓度的比) 为 330 / 8、330 / 12、330 / 16 和 330 / 20 的条件下活性污泥系统的污染物去除特性、污泥沉降性等方面的表现。 结果表明:碳磷比降低会强化聚磷菌活性,改善污泥沉降性,显著提高系统的脱氮除磷性能。 当进水碳磷比由 330 / 8 改变至 330 / 20 时,系统好氧段比吸磷量由9. 502 mg / g 增加到了 17. 764 mg / g,提升了 86. 95%。 在磷浓度升高冲击作用下,聚磷菌厌氧释磷会吸收更多的有机物,试验出水水质得到提升。 厌氧期间 pH 值下降速率与释磷速率显著相关( R2为0. 667) ,pH 值曲线反映了系统中厌氧生物呼吸的特征。 氧化还原电位( ORP ) 在厌氧阶段不断下降,在好氧阶段出现了2个平台期,通过在线监测 ORP 变化可以指示出 PO4 3- -P 的质量浓度变化过程,并可确定厌氧释磷结束的时间点。 在进水化学需氧量( COD) 不变时,提高进水磷浓度可以使微生物活性增强,污泥沉降性能和系统脱氮除磷性能提高,给活性污泥系统带来有利影响。

Abstract:

In order to explore the impact of phosphorus shock load on the characteristics of activated sludge system, the anaerobic aerobic SBR was used for experiments. By changing the influent phosphorus content, the pollutant removal characteristics and sludge sedimentation performance of activated sludge system were investigated in the conditions of influent carbon-phosphorus ratios of 330/8, 330/12, 330/16, 330/20. The results showed that the decrease of carbon-phosphorus ratios could enhance the activity of phosphorus accumulating bacteria, could improve the sludge settleability, and could significantly improve the system′s nitrogen and phosphorus removal performance. When the influent carbon-phosphorus ratios changed from 330/8 to 330/20, the specific phosphorus uptake in the aerobic stage increased from 9.502 mg/g to 17.764 mg/g, increasing by 86.95%. With the impact of increasing phosphorus concentration, the phosphorus accumulating bacteria would absorb more organic matter by anaerobic phosphorus releasing, and the experimental effluent quality will be improved. During the anaerobic period, the pH decreasing rate was significantly correlated with the phosphorus release rate (R2=0.667), and the pH curve reflected the characteristics of anaerobic respiration in the system. ORP decreased continuously in the anaerobic stage, and two platform appeared in the aerobic stage. The change process of PO43--P concentration could be indicated by online monitoring of ORP changes, and the time point of the end of anaerobic phosphorus release could be determined. When the influent COD remained unchanged, increasing the influent phosphorus concentration could enhance the microbial activity, improve the sludge sedimentation performance and the system′s nitrogen and phosphorus removal performance, which would have a favorable impact on the activated sludge system.

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