厌氧-好氧-缺氧SBBR工艺对垃圾渗滤液深度脱氮处理的试验
Experiment of Advanced Treatment with Anaerobic-Aerobic-Anoxic SBBR Processes for Landfill Leachate Denitrification
房新昌 1马良 2田彬彬 2王凯1
作者信息
- 1. 山东建筑大学市政与环境工程学院,山东济南 250000
- 2. 山东国辰实业集团有限公司,山东济南 250305
- 折叠
摘要
传统的垃圾渗滤液生化处理工艺以厌氧-好氧(AO)为主,存在总氮(TN)去除率较低的问题.为提高垃圾渗滤液的TN去除率和去除速率,本研究采用序批式生物膜反应器(SBBR)工艺处理CODCr 质量浓度为 7760 mg/L、TN质量浓度为1200 mg/L的实际垃圾渗滤液.该SBBR的运行模式为厌氧-好氧-缺氧运行,在不增加外加碳源的情况下,经过 85 d的启动和驯化,出水TN质量浓度低于 20 mg/L,TN的去除效率>97%.与序批式反应器(SBR)相比,投加填料提高了同步硝化反硝化(SND)的去除效率,周期从 19.5 h缩短到13.75 h.高通量分析表明,SBBR的优势类群为变形菌门(26.43%),而SBR的优势类群为绿弯菌门(28.53%),不同的优势菌群可能是SBBR相比SBR脱氮效率更高的原因之一.
Abstract
The traditional biochemical treatment process of landfill leachate is mainly AO,which has the problem of low removal rate of total nitrogen(TN).In order to improve the TN removal rate and removal rate of landfill leachate,sequencing batch biofilm reactor(SBBR)was used to treat the actual landfill leachate with CODCr of 7760 mg/L and TN of 1200 mg/L.The operation mode of the SBBR was anaerobic-aerobic-anoxic operation.After 85 days of start-up and acclimation without adding external carbon source,the effluent TN concentration was lower than 20 mg/L,and the removal efficiency of TN was more than 97%.Compared with sequencing batch reactor(SBR),the removal efficiency of simultaneous nitrification and denitrification(SND)was improved by adding fillers,and the period was shortened from 19.5 h to 13.75 h.High throughput analysis showed that the dominant group of SBBR was Proteobacteria(26.43%),while that of SBR was Chloroflexi(28.53%).The different dominant microbial communities may be one of the reasons why SBBR had higher nitrogen removal efficiency compared to SBR.
关键词
垃圾渗滤液/序批式生物膜反应器(SBBR)/序批式反应器(SBR)/深度脱氮/高通量分析Key words
landfill leachate/sequencing batch biofilm reactor(SBBR)/sequencing batch reactor(SBR)/advanced nitrogen removal/high flux analysis引用本文复制引用
出版年
2024
国家科技期刊平台
NSTL
维普
万方数据