[1]赵明宇,王继苗,陈群,等.连续流AO泥膜复合系统同步硝化反硝化除磷特性[J].中国给水排水,2025,41(19):29-38.
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连续流AO泥膜复合系统同步硝化反硝化除磷特性

中国给水排水[ISSN:1000-4062/CN:12-1073/TU] 卷: 第41卷 期数: 2025年第19期 页码: 29-38 栏目: 出版日期: 2025-10-01
Title:
Simultaneous Nitrification and Denitrification Phosphorus Removal (SNDPR) Characteristics of Continuous Flow AO Sludge-Biofilm Composite System
作者:
赵明宇1， 王继苗2， 陈群3， 黄青3， 赵骥1， 邱艳玲1， 冯娟1， 王晓霞1
（1.青岛大学 环境与地理科学学院，山东 青岛 266071；2.青岛水务集团有限公司，山东 青岛 266100；3.青岛双元水务集团有限公司，山东 青岛 266109）
Author(s):
ZHAO　Ming-yu1， WANG　Ji-miao2， CHEN　Qun3， HUANG　Qing3， ZHAO　Ji1， QIU　Yan-ling1， FENG　Juan1， WANG　Xiao-xia1
（1. School of Environment and Geography， Qingdao University， Qingdao 266071， China； 2. Qingdao Water Group Co. Ltd.， Qingdao 266100， China； 3. Qingdao Shuangyuan Water Group Co. Ltd.， Qingdao 266109， China）
关键词:
连续流;  泥膜复合;  同步硝化反硝化;  聚糖菌;  聚磷菌
Keywords:
continuous flow;  sludge-biofilm composite;  simultaneous nitrification and denitrification;  glycogen accumulating organisms;  phosphorus accumulating organisms
摘要:
在连续流AO活性污泥反应器中投加固定填料，考察了泥膜复合系统的启动优化、微生物特性以及同步硝化反硝化除磷（SNDPR）效果，分析了污染物去除性能和典型周期各污染物变化，并结合高通量测序解析了微生物群落结构组成及功能菌群在泥、膜中的生态位分布变化规律。污泥由生物膜转换为悬浮态后，絮体污泥浓度升高，各污染物去除率均有所上升，同步硝化反硝化（SND）率为58%。厌氧区COD去除率为85.5%，CODintra率最高达83.2%；好氧区NH4+-N浓度可降至0.5 mg/L以下，TIN去除率达80%以上，好氧吸磷量为2.1 mg/L。unclassified_f_Rhodobacteraceae和Paracoccus在絮体污泥中承担异养硝化-好氧反硝化与反硝化功能；Terrimonas则是在生物膜上承担反硝化功能。生物膜上AOB和NOB的丰度显著高于活性污泥，PAOs在活性污泥和生物膜中的丰度均呈现持续下降趋势，GAOs成为内源反硝化过程的功能优势菌群，这一微生物群落演替特征从机理层面解释了连续流AO泥膜复合系统在长期运行过程中脱氮除磷性能的变化。
Abstract:
Fixed fillers were added to a continuous flow AO activated sludge reactor to investigate the start-up optimization, microbial characteristics, and simutaneously nitrification and denitrification phosphorus removal (SNDPR) effect of the sludge-biofilm composite system. The long-term removal performance of pollutants and the changes in various pollutants during typical cycles were analyzed. Combined with high?throughput sequencing technology, the microbial community structure composition and the ecological niche distribution of functional microbial communities in the sludge and biofilm were analyzed. After the sludge changed from the biofilm state to the suspended state，the concentration of floc sludge increased, the removal rate of all pollutants increased, and the SND rate reached 58%.The anaerobic zone COD removal rate was 85.5% and the CODintra rate was as high as 83.2%.The concentration of NH4+-N in aerobic zone could be reduced to less than 0.5 mg/L, the removal rate of TIN was above 80%, and the aerobic phosphorus uptake was 2.1 mg/L. Unclassified_f_Rhodobacteraceae and Paracoccus were responsible for heterotrophic nitrification, aerobic denitrification and denitrification in floc sludge. Terrimonas was responsible for denitrification on the biofilm. The content of AOB and NOB on biofilm was much higher than that of floc sludge, the abundance of phosphorus accumulating organisms(PAOs) in both sludge and biofilm gradually decreased, and the glycogen accumulating organisms (GAOs) dominated the endogenous denitrification process, which explained the change of nitrogen and phosphorus removal performance under the continuous flow operation condition.

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更新日期/Last Update: 2025-10-01