Reverse osmosis concentrated water reuse equipment process as a highly efficient, clean desalination technology is widely used in various industries, but in the production process there will be about 25% of the total water intake of the concentrated water discharged, which in the increasing scarcity of water resources today has caused a great waste of water resources, but also seriously hampered the reverse osmosis technology to further promote.
Reverse osmosis concentrated water reuse equipment prone to problem analysis:
★Easy to scale: because it is concentrated four times the concentrated water, so the silica content of this water, alkalinity is large, and many scaling salts, such as: CaCO3, CaSO4, BaSO4, SrSO4, etc., their ionic product is much larger than its concentration product, if you don't use an effective method of control, scaling is inevitable. Fouling is inevitable.
★Easy fouling: in reverse osmosis concentrated water, feed water trace organic matter, colloids have been enriched, if there is no effective control, will also cause reverse osmosis membrane fouling.
★Easy to pollute: in reverse osmosis concentrated water, feed water microorganisms in a variety of enriched nutrient salts, accelerate the growth of the reverse osmosis membrane will cause biological pollution, so it is also necessary to effectively control it.
In the treatment of reverse osmosis water purification equipment waste water utilization reuse, must pay attention to the above three points.