For many homeowners, reverse osmosis (RO) systems are lifesavers, delivering clean, refreshing drinking water straight from the tap. But sometimes, frustration sets in when you notice your RO system rejecting more water than usual. This can lead to slower production of purified water and a feeling of wasted resources.
Don't worry! This is a common concern with a few simple explanations. Let's delve into the reasons behind high rejection rates and explore solutions to get your RO system functioning optimally again.
Understanding Rejection Rate:
Common Causes of High Rejection Rate:
Clogged Pre-filters:
Pre-filters are the first line of defense, removing sediment, chlorine, and other impurities that can damage the RO membrane. If these filters are clogged, they can restrict water flow and increase rejection rate.Low Feed Water Pressure:
Your RO system needs adequate water pressure to function properly. If the pressure is too low, the system won't be able to force water through the membrane efficiently, resulting in higher rejection.Damaged RO Membrane:
Over time, the RO membrane can become damaged due to factors like chlorine exposure or improper cleaning. A damaged membrane will have a decreased ability to filter contaminants and lead to higher rejection rates.Improper Drain Ratio:
Some RO systems have a built-in drain ratio, which is the amount of reject water compared to the amount of purified water produced. An incorrectly set drain ratio can lead to excessive rejection.
Solutions to Optimize Your RO System:
- Change Pre-filters Regularly: Your pre-filters need replacement every 3-6 months. Check the user manual for the recommended replacement schedule.
- Check Water Pressure: The ideal pressure range is between 40 and 60 psi. If it's low, consider installing a pressure booster pump.
- Replace RO Membrane: If your membrane is old or damaged, replace it. This typically needs to be done every 2-3 years.
- Consult Your User Manual: Review the instructions on adjusting the drain ratio (if applicable) for optimal performance.
Conclusion
Regular maintenance is key to keeping your RO system in top shape. Keep a log of your pre-filter changes and note any changes in your system's performance. This can be helpful in troubleshooting future issues.
If you've tried these solutions and your RO system is still rejecting too much water, it's best to consult a qualified water treatment professional for further diagnosis and repair. Totoko RO Service can help you with this. Book a free consultation now!
