Single pass reverse osmosis unit adopts different processes according to different source water quality. Generally, after the tap water is treated by the first-stage reverse osmosis device, the conductivity of the produced water is <10 μS/cm, and the conductivity of the produced water after the second-stage reverse osmosis system is <3 μS/cm.
1. Single pass reverse osmosis unit adopts different processes according to different source water quality. Generally,after the tap water is treated by the first-stage reverse osmosis device. The conductivity of the produced water is <10 μS/cm. And the conductivity of the produced water after the second-stage reverse osmosis system is <3 μS/cm.
After the reverse osmosis system, the ion exchange equipment or the EDI equipment can be used. Ultrapure water was prepared to a resistivity of 18 megaohms at 25 ° C (about 0.056 μS/cm).
2. The core part of the single-pass reverse osmosis unit is that the reverse osmosis membrane is also the key to determine the quality of the produced water. However, the pros and cons of the reverse osmosis system (also known as the pretreatment system) is the key to determine the stable operation of the reverse osmosis system.
3. Pretreatment system, the original water pump pressurized water enters the sand filter. The sand filter is made of quartz sand. Which is used to remove suspended solids, colloids, rust, large particle impurities and some waterborne microorganisms (such as red worms).
After being treated by sand filter, it enters the carbon filter; the carbon filter is made of high-quality coconut shell activated carbon. Its main function is to remove organic matter from the water and chlorine, odor, pesticide and sand filter in tap water. A substance such as a colloid that extends the life of the film. If it is groundwater with high iron content, a softening device can be used. And the treated water can enter the security filtering device after the above treatment.
The security filter unit contains 5umPP filter core, which is used to remove all impurities with a pore size above 5um. Such a process is called pretreatment of the RO device. The main function is to pretreat the raw water to ensure the normal use of the RO device and achieve a certain service life. The pretreated raw water passes through the high pressure pump and enters the RO system. The system adopts imported membrane modules, and the whole set of salt rejection rate is 97%-98%. Under the water quality conditions in China. The effluent can directly reach the national drinking pure water standard (conductivity ≤ 10us / cm) water utilization rate of about 75%.
4. Tap water – → booster pump – → sand filter – → carbon filter – → softener (optional) – → 5US security filter – → high pressure pump – → RO reverse osmosis device – → pure water tank – → water point.
|Rate of recovery||50-60%|