• 372 RO: The Industrial Workhorse - Maximizing Efficiency and Longevity of Reverse Osmosis Systems

  • Jul 12 2024
  • Duración: 50 m
  • Podcast

372 RO: The Industrial Workhorse - Maximizing Efficiency and Longevity of Reverse Osmosis Systems Por arte de portada

372 RO: The Industrial Workhorse - Maximizing Efficiency and Longevity of Reverse Osmosis Systems

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  • Our lab partner today is Jed Harris, owner of Puretec Industrial Water with over 25 years of experience in the water industry, to delve into the world of Reverse Osmosis (RO) systems. Jed’s extensive experience and deep understanding of high-purity water solutions provided a wealth of knowledge, making this episode a must-listen for anyone looking to scale up their water treatment expertise. Below, we highlight some of the best insights Jed shared, aimed at making the complex world of RO systems more accessible and intriguing. Reverse Osmosis: The Industry Workhorse Jed describes reverse osmosis as the workhorse of water treatment, efficiently removing up to 99% of dissolved solids, organics, bacteria, and viruses. This process involves using a high-pressure pump to force water through a semi-permeable membrane, reversing natural osmotic pressure. Whether you're in power generation, food and beverage, or pharmaceuticals, understanding RO systems is crucial as they play a pivotal role in ensuring water purity. Common RO Applications and Challenges RO systems are ubiquitous across various industries. Jed emphasizes their versatility but also highlights the complexities involved in managing them. He notes that the feedwater chemistry can vary, making it essential for operators to understand and monitor their systems to maintain optimal performance. This is particularly critical as the industry pushes for higher recovery rates, often pushing RO systems to their limits. Key Metrics for Monitoring RO Systems Trace Blackmore posed a crucial question; “What are some of the key things that we should be looking at to tell what's going on within the RO?”. Jed Harris provided valuable insights; “You want to look at your flows, your qualities, your pressures, and last but not least, the feedwater temperature—which has a huge effect on all this stuff. You want to look at your permeate flow, your concentrate flow, your feed pressure, your concentrate pressure, and your permeate pressure if available. And then the qualities would be your feed conductivity and your permeate conductivity.” Practical Tips for RO System Maintenance Jed shared several practical tips for maintaining RO systems. He advises partnering with a company that can conduct water analysis and projection to set the system up correctly. Regularly collecting data—ideally daily—and using normalization software to interpret this data is crucial. He also cautioned against the impact of temperature changes, noting that a decrease in feedwater temperature can lead to a significant drop in permeate flow, potentially misleading operators to think there’s a problem when there isn’t. Normalizing Data for Accurate Analysis One of the most insightful parts of the discussion was on the importance of data normalization. Jed explained, “By normalizing the data, what you’re doing is essentially taking data when you start up the RO system, and then, as you go into the future, you’re comparing the current performance to how it should be at the baseline.” This helps accurately assess the system’s performance, especially when dealing with variables like temperature fluctuations that can significantly impact the RO system’s output. Temperature's Effect on RO Jed Harris explains the critical impact of temperature on RO systems: "Temperature has such a huge effect on the amount of water that will go through a membrane. RO membranes are like the Miami Dolphins; they don't do well in cold weather. The rule of thumb is for every one-degree Fahrenheit drop in water temperature, you're going to lose about 1.5% in permeate flow. You might notice a decrease in permeate flow and think, 'Hey, these membranes are dirty. They're plugged. We need to clean; something's wrong.' But in reality, nothing's wrong. It's just that the feedwater temperature has dropped." Pre-Treatment is Key Jed Harris emphasizes the crucial role of proper pretreatment for RO systems: “Pre-treatment is the key to everything.” Jed also highlights the growing adoption of Ultrafiltration (UF) systems, which offer a more consistent quality level compared to traditional multimedia filters. He outlines three primary objectives: Prevent Oxidizer Damage: Once an RO membrane is damaged by an oxidizer, the damage is irreversible.Inhibit Scale Growth: Delay and inhibit scale growth for as long as possible.Reduce Suspended Solids: Minimizing suspended solids helps achieve the highest possible recovery rate. Biofouling: The Unavoidable Challenge Trace and Jed addressed one of the most persistent issues with RO systems: biofouling. Jed explained, “Biofouling is a huge issue… it’s going to happen because we’re removing chlorine before the RO system.” As chlorine, an oxidizer, is removed to protect the RO membranes, any bacteria that enter the system will thrive due to the rich nutrient environment. Monitoring normalized data is crucial as it provides early signs of membrane ...
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