[1]丁心雅,蒋路漫,李晶,等.污水处理厂微孔曝气器污染特征及曝气性能恢复[J].中国给水排水,2025,41(23):91-98.
　DINGXin-ya,JIANGLu-man,LIJing,et al.Fouling Characterization and Aeration Performance Recovery of Fine-pore Diffuser in Wastewater Treatment Plants[J].China Water & Wastewater,2025,41(23):91-98.
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污水处理厂微孔曝气器污染特征及曝气性能恢复

中国给水排水[ISSN:1000-4062/CN:12-1073/TU] 卷: 第41卷 期数: 2025年第23期 页码: 91-98 栏目: 出版日期: 2025-12-01
Title:
Fouling Characterization and Aeration Performance Recovery of Fine-pore Diffuser in Wastewater Treatment Plants
作者:
丁心雅1， 蒋路漫1， 李晶2， 张鸣3， 黄晓俊2， 陈琪炜2， 赵剑文2， 周振1
（1.上海电力大学 环境与化学工程学院，上海 200090；2.上海城投污水处理有限公司 白龙港污水处理厂，上海 201203；3.上海竹园第二污水处理厂，上海 200137）
Author(s):
DING　Xin-ya1， JIANG　Lu-man1， LI　Jing2， ZHANG　Ming3， HUANG　Xiao-jun2， CHEN　Qi-wei2， ZHAO　Jian-wen2， ZHOU　Zhen1
（1. College of Environmental and Chemical Engineering， Shanghai University of Electric Power， Shanghai 200090， China； 2. Bailonggang Wastewater Treatment Plant， Shanghai Chengtou Wastewater Treatment Co. Ltd.， Shanghai 201203， China； 3. Shanghai Zhuyuan Second Wastewater Treatment Plant， Shanghai 200137， China）
关键词:
微孔曝气器;  污染特征;  曝气性能;  氧传质效率;  污水处理
Keywords:
fine-pore diffuser;  fouling characterization;  aeration performance;  oxygen transfer efficiency;  wastewater treatment
摘要:
为探究材质对微孔曝气器在长期运行中累积的污染物特征及氧传质性能的影响，选取运行多年的高密度聚乙烯（HDPE）和三元乙丙橡胶（EPDM）微孔曝气管进行分析。由于污染物在微孔曝气管表面及气孔内聚集，HDPE和EPDM管的氧传质效率分别下降26.7%和6.4%；压力损失分别增至新管的1.25和2.97倍。经机械擦洗后EPDM管的曝气性能几乎恢复到和新管相当的水平；而由于HDPE管的污染物大多沉积于气孔内部，无法通过机械擦洗得到有效去除，经化学清洗后其曝气性能得到较大改善，但仍无法恢复至原先水平。HDPE管的物理不可逆污染占比更高，原因在于其孔径较大，无机污染物容易在孔内沉积，而且其运行时间较长，不断累积的可逆污染物逐渐转化为物理不可逆污染。HDPE管的物理可逆、化学可逆和不可恢复污染分别占35.8%、42.8%和21.4%，EPDM管的物理可逆和物理不可逆污染分别占52.9%和47.1%。蛋白质是HDPE管有机污染物的主要成分，而总细胞是EPDM管有机污染物的主要成分，这是由于微生物会将EPDM膜中的软化剂作为碳源吸收利用，生长繁殖加快，因此EPDM膜表面的生物污染加剧。
Abstract:
To investigate the effects of fine-pore diffuser material on foulant accumulation and oxygen transfer performance during long-term operation, high-density polyethylene (HDPE) and ethylene propylene diene monomer (EPDM) fine-pore diffuser tubes that had been in operation for several years were selected for comparative analysis. Due to the accumulation of foulants on the surface and inside the pores of fine?pore diffuser tubes, the oxygen transfer efficiencies of HDPE and EPDM tubes decreased by 26.7% and 6.4%, respectively, while the pressure losses increased to 1.25 times and 2.97 times that of the new tubes, respectively. After mechanical scrubbing, the aeration performance of the EPDM tube was almost restored to the level of a new tube. Furthermore, since most contaminants in the HDPE tube were deposited inside the pores, they could not be effectively removed by mechanical scrubbing. Although chemical cleaning significantly improved aeration performance, it still could not restore the performance to the original level. The HDPE tube exhibited a higher proportion of physically irreversible fouling, primarily due to its larger pore size, which facilitated the deposition of inorganic contaminants within the pores. Additionally, prolonged operation led to the gradual transformation of initially reversible fouling into physically irreversible forms. The physically reversible， chemically reversible and irrecoverable fouling of HDPE tube accounted for 35.8%, 42.8% and 21.4%, respectively, while for the EPDM tube, the physically reversible and physically irreversible fouling accounted for 52.9% and 47.1%, respectively. Proteins were the main component of organic pollutants in the HDPE tube, while total cells were the main component of organic pollutants in the EPDM tube. This was because microorganisms absorbed and utilized the softener in the EPDM membrane as a carbon source, promoting their growth and reproduction, and exacerbating the biofouling on the surface of the EPDM membrane.

相似文献/References:

[1]陈黄隽,李一平,周玉璇,等.分流制系统雨水管网混接雨天溢流污染特征研究[J].中国给水排水,2023,39(19):116.
　CHENHuang-jun,LIYi-ping,ZHOUYu-xuan,et al.Characteristics of Rainy-weather Overflow Pollution from Separate System in Illicit Connection[J].China Water & Wastewater,2023,39(23):116.

更新日期/Last Update: 2025-12-01