Water District No. 1 of Johnson County, Kansas (WaterOne) is a large utility that supplies water to approximately 340,000 people in the Kansas City metropolitan area. Currently, WaterOne is planning a new 30 mgd treatment facility that will treat Missouri River water withdrawn through horizontal collector wells. One proposed treatment process would include lime softening and filtration by MF/UF membranes. WaterOne and Black & Veatch performed a 6 month pilot study to evaluate the potential effects of limesoftened water, specifically water with pH of 9.5 and calcium carbonate precipitation potential greater than 20 mg/L as CaCO3, on the MF/UF membranes. The pilot testing extended over several seasons, so the impact of water temperature, TOC increases with spring runoff, and process changes upstream of the membrane systems were investigated.
This presentation is available to AMTA Members only.
- Paul Delphos, PE
- Black & Veatch Corporation
- AMTA Biennial Conference, Las Vegas, NV
- Limesoftened water, MF/UF, membranes