Park Seogyeong, Kang Joon-Seok, Lee Jeong Jun, Vo Thi-Kim-Quyen, Kim Han-Seung
Department of Environmental Engineering and Energy, Myongji University, 116 Myongji-ro, Cheoin-gu, Yongin-si, Gyeonggi-do 17058, Korea.
Membranes (Basel). 2018 Nov 15;8(4):110. doi: 10.3390/membranes8040110.
This study investigated the improvement of operating efficiency through physical cleaning and chemical enhanced backwashing (CEB) using ceramic membranes with high permeability and chemical safety compared to organic membranes. The turbidity and DOC (Dissolved Organic Carbon) concentrations were selected to ensure that the degree of contamination was always constant. The operating pressures were fixed at 100, 200, and 300 kPa, and the filtration was terminated when the effluent flow rate decreased to 30% or less from the initial value. After filtration, backwashing was performed at a pressure of 500 kPa using 500 mL backwash water. The membrane was cleaned by dipping in NaOCl, and a new washing technique was proposed for steam washing. In this study, we investigated the recovery rate of membranes by selectively performing physical cleaning and CEB by changing the influent water quality and operating pressure conditions.
本研究调查了与有机膜相比，使用具有高渗透性和化学安全性的陶瓷膜通过物理清洗和化学强化反冲洗（CEB）提高运行效率的情况。选择浊度和溶解有机碳（DOC）浓度以确保污染程度始终恒定。操作压力固定在100、200和300 kPa，当出水流量从初始值下降到30%或更低时，过滤终止。过滤后，使用500 mL反冲洗水在500 kPa的压力下进行反冲洗。通过浸入次氯酸钠对膜进行清洗，并提出了一种新的蒸汽清洗技术。在本研究中，我们通过改变进水水质和操作压力条件，选择性地进行物理清洗和CEB，研究了膜的回收率。
