[1]李成,郭之晗,黄慧敏,等.反硝化除磷的启动特性及亚硝酸盐浓度的影响[J].中国给水排水,2023,39(11):8-14.
　LICheng,GUOZhi-han,HUANGHui-min,et al.Start-up Characteristics of Denitrifying Phosphorus Removal Process and Effect of Nitrite Concentration[J].China Water & Wastewater,2023,39(11):8-14.
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反硝化除磷的启动特性及亚硝酸盐浓度的影响

中国给水排水[ISSN:1000-4062/CN:12-1073/TU] 卷: 第39卷 期数: 2023年第11期 页码: 8-14 栏目: 出版日期: 2023-06-01
Title:
Start-up Characteristics of Denitrifying Phosphorus Removal Process and Effect of Nitrite Concentration
作者:
李成1， 郭之晗1， 黄慧敏2， 韦佳敏3， 李勇1
（1.苏州科技大学 环境科学与工程学院，江苏 苏州 215009；2.维尔利环保科技集团股份有限公司，江苏 常州 213125；3.江苏理工学院 化学与环境工程学院，江苏 常州 213001）
Author(s):
LI　Cheng1， GUO　Zhi-han1， HUANG　Hui-min2， WEI　Jia-min3， LI　Yong1
（1. School of Environmental Science and Engineering， Suzhou University of Science and Technology， Suzhou 215009， China； 2. WELLE Environmental Group Co. Ltd.， Changzhou 213125， China； 3. School of Chemical and Environmental Engineering， Jiangsu University of Technology， Changzhou 213001， China）
关键词:
反硝化除磷;  污泥龄;  亚硝酸盐;  吸磷速率
Keywords:
denitrifying phosphorus removal;  sludge retention time;  nitrite;  phosphorus uptake rate
摘要:
以模拟生活污水为处理对象，采用序批式反应器（SBR）单污泥系统，通过A/O、A/A/O、A/A三阶段运行的方式，研究了反硝化除磷的启动条件，并考察了亚硝酸盐浓度的影响。结果表明，丙酸钠为反硝化除磷菌（DPBs）的理想碳源，通过控制短污泥龄（SRT）驯化聚磷菌（PAOs），再延长SRT至25 d富集DPBs，系统运行45 d即成功启动了反硝化除磷工艺，PO43--P去除率稳定在80%以上。启动成功后，DPBs占PAOs的比例从28.5%升至75.8%。在富集完PAOs后，可利用NO2--N作为电子受体的浓度仅为4 mg/L，达到8 mg/L时则会出现吸磷抑制现象；而DPBs富集完成后，NO2--N抑制浓度阈值提高至12 mg/L，此时净吸磷量仅有8.58 mg/L。
Abstract:
A sequencing batch reactor (SBR) single sludge system fed with simulated domestic wastewater was operated through three stages of A/O, A/A/O and A/A process. The start?up conditions of denitrifying phosphorus removal process and the influence of nitrite concentration on the start-up were investigated. Sodium propionate was an ideal carbon source for denitrifying phosphorus-removing bacteria (DPBs). By controlling short sludge retention time (SRT) to promote the growth of phosphorus accumulating bacteria (PAOs) and extending SRT to 25 days to enrich DPBs, the denitrifying phosphorus removal process was successfully started after 45 days of operation, and the removal rate of PO43--P was always more than 80%. After successful start-up, the proportion of DPBs in PAOs increased from 28.5% to 75.8%. After the enrichment of PAOs, the concentration of available electron acceptor (NO2--N) was only 4 mg/L, and phosphorus absorption was inhibited when NO2--N reached 8 mg/L. However, after the enrichment of DPBs, the threshold of NO2--N inhibition increased to 12 mg/L, and the net phosphorus uptake was only 8.58 mg/L.

相似文献/References:

[1]赵剑强,张局,史冰峰,等.剩余污泥衰减系数取值范围探讨[J].中国给水排水,2022,38(24):53.
　ZHAOJian-qiang,ZHANGJu,SHIBing-feng,et al.Discussion on the Value Range of Excess Sludge Decay Coefficient[J].China Water & Wastewater,2022,38(11):53.

更新日期/Last Update: 2023-06-01