Q: Is a single 1*400GPD system superior to a dual 2*200GPD setup?
A: Opting for the 200GPD system offers benefits including reduced adhesive use during production, leading to enhanced salt rejection rates and improved water flow efficiency.
Q: When should membrane elements undergo cleaning?
A: It's essential to clean the membrane elements upon encountering any of the following conditions:
A noticeable 10-15% decrease in normalized permeate flow.
A marked 10-15% rise in the normalized permeate total dissolved solids (TDS).
A significant 10-15% increase 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 indeed obstructed.
2. Evaluate the regional water quality, focusing on the primary scaling components, such as calcium and magnesium salts.
3. Prepare a solution using 10% hydrochloric acid or a diluted commercially available descaling detergent, along with a specialized RO membrane cleaning agent, based on the scale composition. Submerge the RO membrane for 24 hours.
4. Subsequently, rinse the RO membrane following the soak, using ultrafiltration-produced water. During this process, ensure the pure water outlet is closed while the wastewater outlet remains open for effective flushing.
Q: Why does RO membrane blockage occur within one to two months?
A: 1. High salt content in raw water leads to excessive scaling.
2. Elevated organic matter levels in water exceed standards, causing RO membrane fouling and blockage.
3. The RO film demonstrates a high recovery rate.
4. The purifier lacks a flushing function, causing long-term high-concentration brine deposition in the RO membrane shell.