Q: Is a single 1*400GPD system superior to a dual 2*200GPD setup?
A: Choosing the 200GPD system is beneficial due to its reduced adhesive usage during production, which significantly enhances the salt rejection rate and optimizes water flow efficiency.
Q: When should membrane elements undergo cleaning?
A: It is vital to clean the membrane elements under any of the following circumstances:
A noticeable 10-15% decrease in normalized permeate flow.
A marked 10-15% increase in the normalized permeate total dissolved solids (TDS).
A significant 10-15% rise in the normalized pressure drop between the feed and reject streams.
Q: What are the steps to resolve RO membrane blockage?
A: 1. Begin by confirming whether the home RO System's membrane is genuinely obstructed.
2. Evaluate the regional water quality, particularly focusing on whether the primary scaling components are calcium and magnesium salts.
3. Create a solution with 10% hydrochloric acid or a diluted market-available descaling detergent, coupled with a specialized RO membrane cleaning agent, tailored to the scale composition. Soak the RO membrane for 24 hours.
4. After soaking, rinse the RO membrane using water produced by ultrafiltration. During this process, ensure the pure water outlet remains closed while the wastewater outlet is open for effective flushing.
Q: Why does RO membrane blockage occur within one to two months?
A: 1. Elevated salt levels in raw water lead to excessive scaling.
2. High organic matter levels in the water exceed acceptable standards, resulting in RO membrane fouling and blockage.
3. The RO film features a high recovery rate.
4. The purifier lacks a flushing function, causing long-term high-concentration brine deposition in the RO membrane shell.