LIU Kun-qiao,XU Qian-qian,WANG Bu-yun,et al.Pilot-scale Test on Purification of Algae-laden Raw Water from Taihu Lake by Different Advanced Treatment Processes[J].China Water & Wastewater,2021,37(9 9):21-26.
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Pilot-scale Test on Purification of Algae-laden Raw Water from Taihu Lake by Different Advanced Treatment Processes

China Water & Wastewater[ISSN:1000-4062/CN:12-1073/TU] volume: 第37卷 Number: 9 9 Page: 21-26 Column: Date of publication: 2021-05-01
Author(s):
LIU Kun-qiao1; XU Qian-qian1; WANG Bu-yun1; DING Xing-qi1; DONG Bing-zhi2; YU Zhen-xun1
(1. College of Civil and Environmental Engineering, Ningbo University, Ningbo 315211, China; 2. State Key Laboratory of Pollution Control and Resource Reuse, Tongji University, Shanghai 200092, China)
Keywords:
algae-laden raw water; ozone/biological activated carbon(O3/BAC); ultrafiltration; nanofiltration; membrane fouling
Abstract:
Algae-laden raw water from Taihu Lake was treated by three different combined processes (conventional treatment/O3/BAC, UF/O3/BAC and UF/NF), the removal efficiency of pollutants in water by three different processes was compared by a pilot-scale test,and the removal mechanism of organic matter was investigated through three-dimensional fluorescence spectrum and molecular weight of organic matters. UF/O3/BAC process had the highest average removal rates of turbidity, UV254, algae density and chlorophyll-a, which were 99.96%, 96.40%, 99.39% and 98.75%, respectively. UF/NF process had the highest average removal rate of CODMn(92.73%),while conventional treatment/O3/BAC process had the highest average removal rate of ammonia nitrogen (84.21%). Online coagulation could effectively control membrane fouling and ensure long-term stable operation of the system.The three processes had their own advantages in pollutants removal, but the membrane combined process was more stable.
Last Update: 2021-05-01