Q: Is a single 1*400GPD system superior to a dual 2*200GPD setup?
A: Opting for the 200GPD system is advantageous due to reduced adhesive use during production, which enhances the salt rejection rate and boosts water flow efficiency.
Q: When should membrane elements undergo cleaning?
A: It is crucial to clean the membrane elements when experiencing any of the following conditions:
A noticeable 10-15% reduction 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. Assess the regional water quality, particularly if the primary scaling components are calcium and magnesium salts.
3. Prepare a solution using 10% hydrochloric acid or a diluted market-available descaling detergent, along with a specialized RO membrane cleaning agent, based on the scale composition. Immerse the RO membrane for 24 hours.
4. Subsequently, rinse the RO membrane following the soak, utilizing ultrafiltration-produced water. During this process, ensure the pure water outlet is closed and the wastewater outlet is open for effective flushing.
Q: Why does RO membrane blockage occur within one to two months?
A: 1. High salt content in raw water results in excessive scaling.
2. Elevated organic matter levels in water surpass standards, leading to RO membrane fouling and blockage.
3. The RO film exhibits a high recovery rate.
4. The purifier lacks a flushing function, causing long-term high-concentration brine deposition in the RO membrane shell.