Reverse osmosis scale inhibitors are chemicals used in reverse osmosis (RO) systems to prevent membrane surface fouling and reduce membrane fouling. The following are the general methods for using reverse osmosis scale inhibitors:
Determine dosage: Determine the appropriate dosage of reverse osmosis scale inhibitor based on water quality analysis results and operating conditions. The selection of dosage should be adjusted based on factors such as water hardness, alkalinity, and salt content. Usually, preliminary settings are made based on the recommended dosage range provided by the supplier.
Pre treatment: Before adding reverse osmosis scale inhibitor, ensure that the system has completed necessary pre treatment steps, such as pre filtration, deoxygenation, pH adjustment, etc. These pre-treatment steps help to reduce the content of particles and oxides in the system, providing better conditions for the use of scale inhibitors.
Dosing method: According to the specific requirements of the system, reverse osmosis scale inhibitor can be added to the system in two ways:
a. Continuous dosing: Inject the scale inhibitor continuously into the inlet or concentrated water side at a constant rate. This method is suitable for systems that operate stably for a long time.
b. Staged dosing: The scale inhibitor is added to the system in batches within a certain time interval. This method is suitable for systems that operate periodically or intermittently.
Mixing and cycling: Ensure that the scale inhibitor is fully mixed and forms a uniform wetting layer between the membrane components. According to system requirements, the dispersion effect of reverse osmosis scale inhibitors can be improved through circulating pumps or mixing devices.
Monitoring and adjustment: During the use of reverse osmosis scale inhibitors, key parameters such as inlet and outlet water quality, membrane flux, etc. should be monitored in a timely manner and adjusted according to the actual situation. If problems such as scaling, membrane fouling, or performance degradation occur, it may be necessary to reassess and adjust the dosage and usage conditions of the scale inhibitor.
Please note that when using reverse osmosis scale inhibitors, it is important to strictly follow the product instructions and recommendations provided by the supplier to ensure safety and optimal results. In addition, professional operators should master relevant operating techniques and understand the safety and maintenance requirements related to reverse osmosis systems.