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Evaluation of Methods for Monitoring the Integrity of Reverse Osmosis Membrane Systems
| 题名： | Evaluation of Methods for Monitoring the Integrity of Reverse Osmosis Membrane Systems |
| 作者： | Michelle Chapman Wilbert, Kim Linton |
| 关键词： | membrane water treatment, reverse osmosis, integrity monitoring, wastewater recycling, total organic carbon monitoring, dye challenge, pressure hold test, UV analysis, particle counter, particle monitor, McAllen Texas. |
| 摘要： | Several methods for monitoring the integrity of reverse osmosis membrane systems were evaluated in conjunction with a six month wastewater recycling project in McAllen, Texas. Screened, de-gritted sewage was treated with a microfiltration/bioreactor followed by chloramination, anti-sealant, acidification with sulfuric acid and reverse osmosis. On-line methods evaluated were differential pressure across each stage, normalized product flow, salt passage, total organic carbon, particle count and particle index. Periodic methods evaluated were pressure hold test, dye challenge, UV analysis, and Pseudomonas aeruginosa counts. After the six-month baseline study, the membrane system was damaged purposefully in a variety of ways to find the change in response for each of the methods with a known level of damage. Methods were evaluated for ease of interpretation, labor intensity, and ability to detect damage. The highestranking methods were total organic carbon monitoring, UV 254 monitoring and dye challenge. |
| 报告类型： | 科技报告 |
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