ZHENG Xiao-xu,SHAO Zhi-ping,XING Zhao-yang,et al.Reasons and Countermeasures for Reverse Osmosis Membrane Fouling at Water End of an Industrial Water Plant[J].China Water & Wastewater,2024,40(21):67-72.
Reasons and Countermeasures for Reverse Osmosis Membrane Fouling at Water End of an Industrial Water Plant
China Water & Wastewater[ISSN:1000-4062/CN:12-1073/TU]
volume:
第40卷
Number:
第21期
Page:
67-72
Column:
Date of publication:
2024-11-01
- Keywords:
- industrial water plant; membrane fouling; powdered activated carbon; pre-ozonation; post-ozonation
- Abstract:
- The effluent quality of an industrial water plant in Yiwu City is substandard, and the reverse osmosis membrane at the water end is clogged frequently. On this basis, the paper proposed a short-term combined with long-term operation plan to prolong the membrane fouling period. By analyzing the elemental composition of the membrane-fouling material, it was discovered that the main elements of organic matter, namely C, O, N, and P, accounted for 35.62%, 32.64%, 27.08%, and 0.76% respectively, and the total proportion of these four elements was as high as 96.10%. Therefore, organic matter was the primary cause of membrane fouling. In the short-term operation plan, the combined process of activated carbon and biological aerated filter was employed, and the removal efficiency of TOC reached 33.85%. In the long-term operation plan, the process of pre-ozonation-activated carbon-post-ozonation (post- precipitation) -activated carbon was incorporated, and the TOC removal efficiency could be further elevated to approximately 50%. This plan integrated the short-term and long-term operational strategies, not only fulfilling the requirements of emergency treatment but also attaining the objective of long-term stable operation, which could offer technical experience for other industrial water plants with similar phenomena in actual projects.
Last Update:
2024-11-01