Background
A beverage factory needs to pre-treat raw water (containing sediment and algae) to ensure that the SDI of the subsequent reverse osmosis membrane (RO) inlet water is ≤3.
Solution
- Pretreatment process: multi-media filter (quartz sand) + fiber ball filter (ultrafine fiber ball) two-stage filtration.
- Precision control: The fiber ball filtration accuracy is improved to 5 μm, intercepting tiny particles leaking from the multi-media filter bed.
Implementation effect
- SDI index: From raw water SDI＞5 to ≤2, the frequency of RO membrane fouling is reduced by 80%.
- Cost savings: Extend the RO membrane cleaning cycle and reduce annual maintenance costs by 30%.
Key points
The compressibility of fiber balls realizes “dynamic precision filtration” and fills the precision gap of traditional multi-media filtration.
