Performance of passive aerated hybrid carrier bioreactor for treatment of domestic sewage

CHEN Shenliang; GUO Qiyi; CHENG Liang; LI Qiming; ZHUANG Chen; ZHANG Chaoqun; YANG Yang

doi:10.11835/j.issn.2096-6717.2022.064

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Performance of passive aerated hybrid carrier bioreactor for treatment of domestic sewage

Environmental Engineering | 更新时间：2023-11-21

- Performance of passive aerated hybrid carrier bioreactor for treatment of domestic sewage
- Journal of Civil and Environmental Engineering Vol. 45, Issue 6, Pages: 198-205(2023)
- 作者机构：
  
  1.江苏大学环境与安全工程学院，江苏镇江 212013
  2.重庆大学土木工程学院，重庆 400045
- 作者简介：
  
  CHEN Shenliang (1997- ), main research interest: wastewater treatment, E-mail: 2211909011@stmail.ujs.edu.cn.
  YANG Yang （corresponding author）, PhD, E-mail: yyyoung@cqu.edu.cn.
- 基金信息：
  
  Talent Launch Fund of Jiangsu University(4111370003)
- DOI：10.11835/j.issn.2096-6717.2022.064
  CLC： X703.1
- Received：06 April 2022，
  
  Published：25 December 2023
- 稿件说明：
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陈申良,郭其艺,成亮等.免曝气混合填料反应器处理生活污水的性能[J].土木与环境工程学报,2023,45(06):198-205.

CHEN Shenliang,GUO Qiyi,CHENG Liang,et al.Performance of passive aerated hybrid carrier bioreactor for treatment of domestic sewage[J].Journal of Civil and Environmental Engineering,2023,45(06):198-205.
陈申良,郭其艺,成亮等.免曝气混合填料反应器处理生活污水的性能[J].土木与环境工程学报,2023,45(06):198-205. DOI： 10.11835/j.issn.2096-6717.2022.064.

CHEN Shenliang,GUO Qiyi,CHENG Liang,et al.Performance of passive aerated hybrid carrier bioreactor for treatment of domestic sewage[J].Journal of Civil and Environmental Engineering,2023,45(06):198-205. DOI： 10.11835/j.issn.2096-6717.2022.064.

摘要

采用沸石-塑料混合填料为载体构建固定床生物膜反应器，周期性进水（厌氧）-排水（好氧）富集培养聚糖菌（GAOs），结合沸石颗粒吸附作用实现厌氧条件下COD和氨氮的去除。在进水COD和氨氮浓度分别为（508±19）mg/L和（40±3）mg/L、HRT为12 h（厌氧6 h、好氧6 h）的运行条件下，单级反应器COD、氨氮和总氮去除率分别为89.2%、57.5%、57.5%。双级反应器条件下，COD、氨氮和总氮的平均去除率分别为93.1%、84.9%、70.8%。缩短50% HRT（厌氧/缺氧3 h+好氧3 h）后，双级反应器总氮去除率提升到81.7%。16S rRNA高通量测序结果显示，聚糖菌

Candidatus Competibacter

的相对丰度在塑料填料表面上升了30.43倍（0.46%→14%），而在沸石颗粒表面上升了14.35倍（0.46%→6.60%），表明塑料填料表面更有利于聚糖菌的富集。

Abstract

In this study

a fixed-bed biofilm reactor using hybrid zeolite and plastic bio-carriers was constructed

in which successful enrichment of glycogen accumulating organisms (GAOs) under oscillating filling (anaerobic) - draining (aerobic) conditions was achieved. Associated with zeolite chemical adsorption

anaerobic removal of COD by GAOs and ammonia by zeolite was achieved. The hybrid carrier bioreactor was fed with synthetic wastewater with COD and ammonia concentration of (508±19)mg/L and (40±3)mg/L

respectively

and operated under periodical cycles of anaerobic (6 h) and aerobic (6 h). The removal rates of COD

ammonia nitrogen

and total nitrogen (TN) by single-stage treatment were 89.2%

57.5%

and 57.5%

respectively. The removal rates of COD

ammonia nitrogen

and TN by the two-stage reactors were 93.1%

84.9%

and 70.8%

respectively. By reducing the HRT by 50% (anaerobic/anoxic 3 h + aerobic 3 h)

the TN removal rate in the two-stage reactors was increased to 81.7%. The results of 16S rRNA high-throughput sequencing showed that the relative abundance of

Candidatus Competibacter

(GAOs) increased by 30.43 times (0.46% → 14%) on the surface of the plastic carrier

while it only increased by 14.35 times ( 0.46%→6.60%) for the zeolite carrier

indicating that the surface of the plastic carrier is more favorable for the enrichment of

Candidatus Competibacter

关键词

Keywords

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