村镇高氮污水倒置AAO型MABR处理工艺中试

段忠燕; 杜安珂; 宋南川; 牛佳伟; 石戈; 税永红; 胡艺维; 魏泽军

doi:10.13205/j.hjgc.202512006

村镇高氮污水倒置AAO型MABR处理工艺中试

doi: 10.13205/j.hjgc.202512006

1. 重庆交通大学, 重庆 400074;
2. 重庆市科学技术研究院, 重庆 401121;
3. 重庆市豪洋水务建设管理有限公司, 重庆 400020;
4. 成都纺织高等专科学校, 成都 611731

基金项目:

中国科学院-荷兰基金委国合项目“基于数字孪生技术的分散式智能污水处理”（309GJHZ2023003MI）

详细信息

作者简介:
段忠燕（1998—），女，硕士，主要研究方向为水污染控制理论及应用。2916027669@qq.com

通讯作者:
魏泽军（1985—），男，高级工程师，主要研究方向为水污染控制与海绵城市建设。124453157@qq.com

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出版历程
- 收稿日期: 2025-05-08
- 录用日期: 2025-07-08
- 修回日期: 2025-07-02
- 网络出版日期: 2026-01-09

A pilot-scale study on inverted AAO type MABR treatment process for high nitrogen wastewater in villages and towns

1. Chongqing Jiaotong University, Chongqing 400074, China;
2. Chongqing Academy of Science and Technology, Chongqing 401121, China;
3. Chongqing Haoyang Water Service and Construction Management Co., Ltd., Chongqing 400020, China;
4. Chengdu Textile College, Chengdu 611731, China

摘要

摘要: 针对村镇污水普遍存在原水高氮，和因高氮导致的低C/N导致出水不稳定，特别是总氮（TN）去除效果不佳的情况，在重庆市某镇级污水处理厂内搭建了2.0 m³/d的倒置AAO型MABR处理工艺中试装置，考察该工艺在处理高进水总氮污水的实际效果。研究了装置启动期间的挂膜效果，分析运行期间主要参数如内回流比、污泥浓度和进水C/N（COD/TN）对污染物去除效果的影响。结果表明：在水温13~20 ℃条件下，当进水ρ（COD）、ρ（TN）分别为255~324，39.1~55.6 mg/L时，ρ（SS）约为3000 mg/L，曝气膜成功挂膜时间约需40 d。无内回流运行工况对COD、NH₃-N和TN的去除均有较大不利影响，此时，TN去除率约40%；回流比达到200%后，COD、NH₃-N去除稳定，继续增加回流比对其去除无明显影响；TN去除率随着回流比的增加而增加，回流比达到500%时，TH去除率达到最高，为90%。污泥浓度为2000 mg/L时，进水水质波动对出水的影响较小且能稳定达标。进水C/N分别为2.8、3.6时，进水ρ（TN）为40.0~100.1 mg/L，出水ρ（TN）平均为13.8 mg/L，平均去除率为83.1%；当C/N≥4.2时，进水ρ（TN）为42~58 mg/L，出水ρ（TN）为6.3~8.3 mg/L，平均值为7.3 mg/L，平均去除率为83.9%。倒置AAO型MABR工艺在高氮进水和因高氮导致的低C/N条件下表现出较好的稳定性和强化脱氮性能。膜曝气因无需反洗，管理方便，较适宜村镇污水提质增效。
- 村镇污水 /
- 强化脱氮 /
- MABR工艺 /
- 高氮 /
- 低碳氮比
Abstract: In response to the common problem of high nitrogen in raw water and low carbon to nitrogen ratio， which leads to unstable effluent in village and town sewage， especially the poor removal effect of total nitrogen， a 2.0 m³/d inverted AAO type MABR treatment process pilot plant was built in a town-level sewage treatment plant in Chongqing to investigate its actual effect in treating high influent total nitrogen sewage. This study investigated the biofilm formation efficiency during the reactor startup period， as well as the effects of key operational parameters during the operational phase， such as internal reflux ratio， sludge concentration， and influent carbon-to-nitrogen ratio （C/N） on pollutant removal efficiency. The experimental results showed that the water temperature ranged from 13℃ to 20℃， COD concentration in the influent water was 255 to 324 mg/L， the TN influent concentration was 39.1 to 55.6 mg/L， the suspended sludge concentration was about 3000 mg/L， and the successful hanging time of the aeration membrane was about 40 days. The operating conditions without internal reflux had great adverse effect on the removal of COD， ammonia nitrogen， and total nitrogen. At this time， the removal rate of total nitrogen was about 40%. After the reflux ratio reached 200%， stable removal efficiencies for COD and NH₃-N were achieved， and further increase in reflux ratio showed no significant improvement on their removal. However， the removal rate of total nitrogen increased with the increase in reflux ratio. When the reflux ratio reached 500%， the maximum total nitrogen removal rate reached 90%. When the sludge concentration reached 2000 mg/L， the fluctuation of intake water quality had little impact and could meet the emission standard stably. When the influent C/N ratio was 2.8 and 3.6， respectively， the influent total nitrogen concentrations ranged from 40 to 100.1 mg/L， the average effluent total nitrogen was 13.8 mg/L， and the average total nitrogen removal rate was 83.1%. When the C/N ratio reached 4.2 or higher， the total nitrogen concentration was 42 to 58 mg/L， the effluent total nitrogen decreased to 6.3 to 8.3 mg/L， the average concentration was 7.3 mg/L， and the average removal rate was 83.9%. The inverted AAO type MABR process exhibited good stability and enhanced denitrification performance under high nitrogen inflow and low carbon-to-nitrogen （C/N） ratio conditions caused by high nitrogen. Membrane aeration is suitable for improving the quality and efficiency of village and town sewage due to convenient management without backwashing.
- rural and village sewage /
- enhanced nitrogen removal /
- MABR process /
- high nitrogen /
- low carbon-to-nitrogen ratio

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