EVOLUTION IN MEMBRANE PERFORMANCE OF GROUNDWATER SOURCED WATERWORKS DURING LONG-TERM OPERATION

CHANG Jia-yu; YU Shui-li; LIU Hua-fa; GAO Le; LIU Gui-cai

doi:10.13205/j.hjgc.202107008

Volume 39 Issue 7

Jan. 2022

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Article Navigation > ENVIRONMENTAL ENGINEERING > 2021 > 39(7): 73-79

CHANG Jia-yu, YU Shui-li, LIU Hua-fa, GAO Le, LIU Gui-cai. EVOLUTION IN MEMBRANE PERFORMANCE OF GROUNDWATER SOURCED WATERWORKS DURING LONG-TERM OPERATION[J]. ENVIRONMENTAL ENGINEERING , 2021, 39(7): 73-79. doi: 10.13205/j.hjgc.202107008

Citation:

CHANG Jia-yu, YU Shui-li, LIU Hua-fa, GAO Le, LIU Gui-cai. EVOLUTION IN MEMBRANE PERFORMANCE OF GROUNDWATER SOURCED WATERWORKS DURING LONG-TERM OPERATION[J]. ENVIRONMENTAL ENGINEERING , 2021, 39(7): 73-79. doi: 10.13205/j.hjgc.202107008

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EVOLUTION IN MEMBRANE PERFORMANCE OF GROUNDWATER SOURCED WATERWORKS DURING LONG-TERM OPERATION

doi: 10.13205/j.hjgc.202107008

CHANG Jia-yu^1,2,
YU Shui-li^{1,2
,
,},
LIU Hua-fa^1,2,
GAO Le^1,2,
LIU Gui-cai³

1. State Key Laboratory of Pollution Control and Resource Utilization, School of Environmental Science and Engineering, Tongji University, Shanghai 200092, China;
2. Shanghai Institute of Pollution Control and Ecology Safety, Shanghai 200092, China;
3. School of Civil Engineering and Architecture, Jinan University, Jinan 250022, China

Received Date: 2021-01-29
Available Online: 2022-01-18

Abstract

Abstract

Daqing Oilfield Xishuiyuan Water Plant took groundwater as the main water source, used conventional-ozone/activated carbon-ultrafiltration(UF) membrane treatment technology, and had been in operation for 5 years from its commissioning in 2014 to the end of 2019. The turbidity of the effluent from the water plant, organic matter(COD_Mn) and total number of colonies reached the standard stably. However, ultrafiltration membrane fouling led to changes in membrane performance. In order to explore the evolution of ultrafiltration membrane water treatment and membrane performance during the five years operation, the water quality of membrane effluent, membrane flux, transmembrane pressure and membrane fouling layer were analyzed. The results showed that the removal rate of turbidity and microorganism maintained above 90%, while the average removal rate of organic matter was only 9%. The specific flux of the ultrafiltration membrane decreased by 2.1%~4.6% per year. Clean in place(CIP) in the flux and specific flux recovery rate of the ultrafiltration membrane were maintained in the range of 73%~91% and 85%~92%, respectively. The analysis results of the fouling layer showed that the organic pollutants of the ultrafiltration membrane were mainly humic acid and protein; the inorganic pollutants were manganese, calcium, iron, silicon and aluminium. Complex pollutants formed by high-valent metal elements and organic matter played a dominant role in the pollution layer; at the same time, inorganic salt scales with silicon and calcium shouldn't be ignored.
- drinking water,
- ultrafiltration membrane,
- long-term operation,
- processing efficiency,
- membrane performance

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References(18)

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