曝气精确控制实现污水处理厂节能降耗的应用

荆玉姝; 牟润芝; 姜怡名; 刘长青; 杨延栋

doi:10.13205/j.hjgc.202205020

曝气精确控制实现污水处理厂节能降耗的应用

doi: 10.13205/j.hjgc.202205020

1. 青岛张村河水务有限公司, 山东青岛 266100;
2. 青岛理工大学环境与市政工程学院, 山东青岛 266033

基金项目:

山东省高等学校科技计划项目(J18KA207)

山东省自然科学基金项目(ZR2019BEE070)

详细信息

作者简介:
荆玉姝(1974-),女,高级工程师,主要研究方向为城镇污水及污泥处理技术。jysqd@163.com

通讯作者:
杨延栋,男,讲师,主要研究方向为城市污水脱氮除磷理论与技术。yangyandong@qut.edu.cn

计量
- 文章访问数: 570
- HTML全文浏览量: 76
- PDF下载量: 47
- 被引次数: 0
出版历程
- 收稿日期: 2021-08-05
- 网络出版日期: 2022-07-02

REDUCING ENERGY AND CHEMICALS CONSUMPTION OF WASTEWATER TREATMENT PLANTS BY ACCURATE AERATION CONTROL: A CASE STUDY

1. Qingdao Zhangcunhe Water Co., Ltd, Qingdao 266100, China;
2. School of Environmental and Municipal Engineering, Qingdao University of Technology, Qingdao 266033, China

摘要

摘要: 曝气系统是污水处理厂最主要的耗能单元,具有很高的节能潜力。在青岛张村河水质净化厂引进曝气精确分配与控制系统,考察了该系统的曝气控制效果、对出水水质的影响以及节能降耗潜力。结果显示:在1 d中2/3以上的时段内,曝气精确控制可将曝气池中溶解氧(DO)浓度控制在设定值±0.3 mg/L范围内。应用曝气精确控制后,污水处理厂平均出水ρ(COD)由19.6 mg/L降至16.7 mg/L,ρ(NH⁺₄-N)由0.37 mg/L降至0.28 mg/L,ρ(TN)由8.48 mg/L降至7.36 mg/L,出水ρ(TN)<10 mg/L的天数占总运行时间比例由79%增至100%,出水水质更加稳定;同时曝气能耗节省24.8%,乙酸钠药耗降低15.1%。结果表明曝气精确控制是实现城市污水处理厂节能降耗的有效途径之一。
- 污水处理厂 /
- 节能降耗 /
- 曝气精确控制 /
- 溶解氧 /
- 水质提标
Abstract: As the main energy consumer in wastewater treatment plants(WWTPs), aeration system has a high potential for energy saving. In this study, an air distribution and control system was introduced into Zhangcunhe WWTP, Qingdao. The efficiency of this system was tested, and its effects on the effluent quality and energy consumption were investigated. The results showed that the dissolved oxygen(DO) concentration in the aeration tank could be maintained within ±0.3 mg/L of the setpoint for longer than two-thirds of the running time. By applying the accurate aeration control, the average concentration of effluent chemical oxygen demand(COD) decreased from 19.6 mg/L to 16.7 mg/L, while those of ammonium and total nitrogen(TN) decreased from 0.37 mg/L to 0.28 mg/L, and from 8.48 mg/L to 7.36 mg/L, respectively. The proportion of days with effluent TN<10 mg/L increased from 79% to 100%, indicating a more stable effluent quality. Besides, the power consumption of the aeration system was reduced by 24.8% while the sodium acetate dosing decreased by 15.1%. Therefore, accurate aeration control is an effective approach to reduce the energy and chemical consumption of WWTPs.
- wastewater treatment plants /
- energy and chemical saving /
- accurate aeration control /
- dissolved oxygen /
- water quality upgrading

HTML全文

参考文献(16)

[1]	曲久辉.建设面向未来的中国污水处理概念厂[N].中国环境报,2014-01-07(10).
[2]	曹业始,郑兴灿,刘智晓,等.中国城市污水处理的瓶颈、缘由及可能的解决方案[J].北京工业大学学报,2021,47(11):1292-1302.
[3]	孙慧,王佳伟,吕竹明,等.北京某大型城市污水处理厂节能降耗途径和效果分析[J].中国给水排水,2019,35(16):31-34.
[4]	王硕,徐巧,李伟光,等.浅谈精确曝气控制研究与应用现状[J].环境科学与技术,2016,39(增刊2):321-325.
[5]	谢小明.精确曝气控制在污水处理厂中的应用和探索[J].中国给水排水,2016,32(6):24-27.
[6]	梁锐振,谈振娇,胡金财,等.VACOMASS曝气气体精确分配与控制系统的应用[J].中国给水排水,2011,27(21):89-92.
[7]	杨岸明,常江,孟春霖,等.DO精确控制技术在A²O工艺中的应用研究[J].中国给水排水,2013,29(23):5-7 ,13.
[8]	唐鑫伟,傅坚亮,任亚英.精准曝气系统在提高AAO+MBR工艺总氮去除率中的应用[J].净水技术,2020,39(增刊1):133-137.
[9]	GÓMEZ M A,HONTORIA E,GONZÁLEZ-LÓPEZ J.Effect of dissolved oxygen concentration on nitrate removal from groundwater using a denitrifying submerged filter[J].Journal of Hazardous Materials,2002,90(3):267-278.
[10]	高廷耀,周增炎,朱晓君.生物脱氮工艺中的同步硝化反硝化现象[J].给水排水,1998,24(12):6-9.
[11]	王世平,王艺霖.A²/O中精确曝气控制的节能分析与评估[J].水处理技术,2016,42(11):113-117.
[12]	常江,杨岸明,甘一萍,等.城市污水处理厂能耗分析及节能途径[J].中国给水排水,2011,27(4):33-36.
[13]	王迁,李江伟,王志刚,等.城市污水处理厂关键设备能耗分析及节能降耗途径研究[J].给水排水,2018,54(10):44-47.
[14]	彭永臻,郭建华,王淑莹,等.低溶解氧污泥微膨胀节能理论与方法的发现、提出及理论基础[J].环境科学,2008,29(12):3342-3347.
[15]	BOCK E,SCHMIDT I,STUVEN R,et al.Nitrogen loss caused by denitrifying Nitrosomonas cells using ammonium or hydrogen as electron donors and nitrite as electron acceptor[J].Archives of Microbiology,1995,163(1):16-20.
[16]	崔有为,金常林.好氧迁移外源有机物转变成内源聚合物驱动内源反硝化[J].北京工业大学学报,2020,46(3):320-328.