低温下A/MBBR反应器快速启动的工艺参数
Process parameters for rapid start-up of A/MBBR at low temperature
董进波 1王帆 2阿琼 3解清杰 2韩松2
作者信息
- 1. 镇江市水业有限责任公司,江苏 镇江 212001;江苏满江春城市规划设计研究有限责任公司,江苏 镇江 212008
- 2. 江苏大学环境与安全工程学院,江苏 镇江 212013
- 3. 西藏自治区生态环境监测中心,西藏 拉萨 850000
- 折叠
摘要
为了探究厌氧移动床生物膜反应器(A/MBBR)低温下影响工艺启动的因素,得到最佳的启动工况,在选用K3 填料作为反应器填料和自然挂膜启动的基础上,建立了试验平台.在 8～12℃的水温和不同工况水平的填充率、回流比和水力停留时间下,通过研究反应器在挂膜启动时期对污水中化学需氧量、NH3-H和总磷的处理效果,得到了启动时期反应器在不同工况水平下的运行效果;通过研究反应器内填料上固体生物膜的质量变化,得到不同工况水平下生物膜增长速率;通过研究生物膜的产气速率,得到了不同工况水平下反应器生物膜总比呼吸速率和内源比呼吸速率.通过比较反应器运行效果和填料上生物膜的活性及呼吸速率,得到了A/MBBR反应器在 8～12℃下自然挂膜启动的最佳工艺参数:填充率为 40%、回流比为 20%、水力停留时间为 8h时,该工况下能够兼顾污染物去除率、生物膜生长速率和生物膜活性,是最佳的启动条件,预计可缩短 23%的启动时间.
Abstract
In order to explore the factors affecting the process start-up of anaerobic moving bed biofilm reactor at low temperature and obtain the optimal start-up process parameters,an experimental platform was established on the basis of selecting K3 filler packing as the reactor filler with natural inoculation process.Under different levels of filling rate,reflux ratio and hydraulic retention time at the water tem-perature of 8-12℃,and different operating conditions the operating effects of the reactor were ob-tained by studying on the treatment effect of the reactor during film hanging start-up on chemical oxygen demand,NH3-H and total phosphorus in sewage.The growth rate of biofilm under different op-erating conditions was obtained by studying on the mass changes of biofilm on the filler in the reactor.By studying the gas production rates of the biofilm,the total specific respiratory rates and endogenous sources specific respiratory rates of the biofilm in the reactor under different operating conditions were obtained.By comparing the operating efficiency,the activity and respiratory rates of the biofilm,the optimal process parameters for the start-up of the A/MBBR with natural inoculation process at 8-12℃ were obtained:the filling rate was 40％,the reflux ratio was 20％,and the hydraulic retention time was 8 h.Under this operating condition,it can take into account the removal rate of pollutants,biofilm growth rate,and biofilm activity.It is the best starting condition and is expected to shorten the starting time by 23％.
关键词
高寒缺氧地区/农村生活污水/A/MBBR反应器/快速启动/工艺参数Key words
frigid and anoxic areas/rural domestic sewage/A/MBBR/rapid start-up/process parameters引用本文复制引用
基金项目
西藏自治区科技厅重点研发项目(XZ202201ZY0018N)
西藏自治区科技厅重点研发项目(XZ202301ZY0002N)
镇江市科技计划(社会发展)(SH2021012)
出版年
2024
国家科技期刊平台
NSTL
维普
万方数据