DUZheng-liang,ZHONGYa,ZHANGHui,et al.Performance of Humus Soil Biochemical System in Treating Rural Wastewater under Low Dissolved Oxygen Conditions[J].China Water & Wastewater,2025,41(7):102-109.
低溶解氧下腐殖土生化系统处理农村污水的效能
- Title:
- Performance of Humus Soil Biochemical System in Treating Rural Wastewater under Low Dissolved Oxygen Conditions
- Keywords:
- rural wastewater; nitrogen removal; humus soil biochemical system; low dissolved oxygen; microbial community
- 摘要:
- 针对传统AON工艺曝气量大、能耗高等问题，开发出腐殖土生化系统（HSBS）并处理模拟农村污水，考察了HSBS与AON工艺在污染物去除效能、污泥特征及微生物群落方面的差异。结果表明，HSBS在低溶解氧（DO为0.3～0.7 mg/L）条件下对污水中COD、NH4+-N和TN的去除率分别为97.1%、91.2%、84.4%，相应出水浓度分别为11.0、3.5和6.3 mg/L，其中对TN的去除率较AON工艺提升了12.6%，表现出良好的处理效果。高通量测序结果显示，与AON工艺相比，HSBS具有更高的微生物群落丰富度和多样性，并且该系统中存在Proteobacteria、Patescibacteria、Chloroflexi和Bacteroidota等多种优势菌门，在生化脱氮过程中发挥着重要作用，增强了HSBS对污染物的去除效能。可见，HSBS可替代AON处理农村污水，为农村污水高效低耗处理提供了技术和理论参考。
- Abstract:
- To address the issues of high aeration requirements and energy consumption associated with the traditional anoxic-oxic (AON) process, a humus soil biochemical system (HSBS) was developed for the treatment of simulated rural wastewater. This study investigated the differences between HSBS and the AON process in terms of pollutant removal efficiency, sludge characteristics, and microbial community. Under low dissolved oxygen conditions (0.3 mg/L to 0.7 mg/L), the HSBS achieved removal efficiencies of 97.1%, 91.2%, and 84.4% for COD, NH4+-N, and TN in wastewater, respectively, with corresponding effluent concentrations of 11.0 mg/L, 3.5 mg/L, and 6.3 mg/L. Compared to the AON process, the TN removal efficiency was enhanced by 12.6%, demonstrating superior treatment performance. The results of high-throughput sequencing revealed that the HSBS exhibited greater microbial community richness and diversity in comparison to the AON process. Notably, several dominant bacterial phyla were identified, including Proteobacteria, Patescibacteria, Chloroflexi, and Bacteroidota. These microorganisms played a crucial role in biochemical nitrogen removal, thereby enhancing the pollutant removal efficiency of the HSBS. The HSBS has the potential to replace AON, offering a technical and theoretical reference for the efficient and low?consumption treatment of rural wastewater.
相似文献/References:
[1]王晓云,付爱民,李启明.曝气氧化塘+人工湿地组合工艺处理农村污水[J].中国给水排水,2021,37(21):64.
WANG Xiao-yun,FU Ai-min,LEE King-ming.Combined Process of Aeration Pond and Constructed Wetland for Treatment of Rural Sewage[J].China Water & Wastewater,2021,37(7):64.
[2]柳蒙蒙,陈彦霖,马晓龙,等.西北地区某污水厂CASS工艺提质增效工程设计[J].中国给水排水,2022,38(2):64.
LIU Meng?meng,CHEN Yan?lin,MA Xiao?long,et al.Process Design of a CASS Upgrading Project of a Wastewater Treatment Plant in Northwest China[J].China Water & Wastewater,2022,38(7):64.
[3]赵俊娜.低负荷运行时内回流比对A2O工艺脱氮的影响[J].中国给水排水,2022,38(5):81.
ZHAOJun-na.Effect of Internal Reflux Ratio on Nitrogen Removal in A2O Process under Low Load Operation[J].China Water & Wastewater,2022,38(7):81.
[4]陈晶,王冠平,石伟,等.单级MABR纯生物膜法处理市政污水的应用研究[J].中国给水排水,2022,38(11):74.
CHENJing,WANGGuan-ping,SHIWei,et al.Application of Single Stage MABR Pure Biofilm for the Treatment of Municipal Wastewater[J].China Water & Wastewater,2022,38(7):74.
[5]潘成荣,陈建,彭书传,等.复合型人工湿地对污水厂尾水的深度处理效果[J].中国给水排水,2022,38(13):111.
PANCheng-rong,CHENJian,PENGShu-chuan,et al.Advanced Treatment Efficiency of Effluent from Wastewater Treatment Plant by Composite Constructed Wetland[J].China Water & Wastewater,2022,38(7):111.
[6]夏琼琼,尚巍,郑兴灿,等.曝气方式对低基质CANON工艺的影响[J].中国给水排水,2022,38(17):67.
XIAQiong-qiong,SHANGWei,ZHENGXing-can,et al.Effect of Aeration Mode on CANON Process Treating Low Ammonia Nitrogen Wastewater[J].China Water & Wastewater,2022,38(7):67.
[7]王帆,李军,艾胜书,等.HRT对多级A/O耦合流离生化工艺低温脱氮的影响[J].中国给水排水,2022,38(17):74.
WANGFan,LIJun,AISheng-shu,et al.Effect of Hydraulic Retention Time on Multistage A/O Coupled with Flow-separated Biochemical Process for Nitrogen Removal from Wastewater at Low Temperature[J].China Water & Wastewater,2022,38(7):74.
[8]陈亚松,赵铮.改良型A2/O+A/O工艺的脱氮诊断和优化调控策略[J].中国给水排水,2022,38(21):64.
CHENYa-song,ZHAOZheng.Diagnosis of Nitrogen Removal in Modified A2/O+A/O Process and Its Optimization Strategy[J].China Water & Wastewater,2022,38(7):64.
[9]董倩倩,李骏飞,初振宇.垂直-水平流人工湿地处理农村污水效果及影响因素[J].中国给水排水,2022,38(21):101.
DONGQian-qian,LIJun-fei,CHUZhen-yu.Treatment Effect of Vertical-horizontal Flow Constructed Wetland System on Rural Wastewater and Its Influencing Factors[J].China Water & Wastewater,2022,38(7):101.
[10]刘天顺,张国威,刘志生.负压排水系统在农村污水收集中的应用[J].中国给水排水,2022,38(24):64.
LIUTian-shun,ZHANGGuo-wei,LIUZhi-sheng.Application of Negative Pressure Drainage System in Rural Sewage Collection[J].China Water & Wastewater,2022,38(7):64.