Q: Is a single 1*400GPD system superior to two 2*200GPD systems?
A: The 200GPD system is more advantageous. It reduces adhesive usage during production, optimizes salt rejection rates, and enhances overall water flow.
Q: When should the membrane elements be cleaned to maintain optimal performance?
A: It is vital to clean the membrane elements when any of the following signs are observed:
A decrease of 10-15% in normalized permeate flow, indicating potential clogging or scaling.
An increase of 10-15% in normalized permeate total dissolved solids (TDS), suggesting decreasing efficiency.
An increase of 10-15% in normalized pressure drop between feed and reject, pointing to possible obstruction.
Q: What are the steps to resolve RO Membrane Blockage effectively?
A: 1. Initially, verify if the home RO System membrane is indeed blocked.
2. Evaluate the regional water quality to ascertain if primary scale components are mainly calcium and magnesium salts.
3. Prepare a solution with 10% hydrochloric acid or a diluted detergent (available descaling agents), along with a specialized RO membrane cleaning agent based on scale composition. Immerse the RO membrane in this solution for 24 hours.
4. Thoroughly rinse the RO membrane after soaking. Use water produced by ultrafiltration for rinsing. During this process, close the pure water outlet and open only the wastewater outlet.
Q: Why does the RO membrane experience blockage within one to two months?
A: 1. The raw water may contain high salt content, leading to excessive scale formation.
2. The water's organic matter content might exceed safe standards, causing the RO membrane to foul and become clogged.
3. A high RO film recovery rate can contribute to blockage, restricting flow and efficiency.
4. The purifier might lack a flushing function. Over time, this results in high-concentration brine deposits within the RO membrane shell.