East Cherry Creek Valley Water & Sanitation District (ECCV), Colorado, is planning an initial 10-mgd desalination facility that at build-out of 40-mgd would be one of the largest inland desalination facilities
in the United States. This study evaluated the use of low-pressure reverse osmosis (RO) membranes as a cost-effective means to treat inland brackish groundwater to supplement ECCV's current and future
demands. Pilot study objectives were to:
determine RO system operating parameters applicable to full-scale systems;
verify performance for pre-selected RO membranes;
evaluate fouling and scaling potential of Beebe Draw well water;
evaluate process pretreatment requirements;
provide RO system orientation for ECCV staff; and,
determine acceptable blend of RO permeate water with raw well water to
achieve taste and odor goals for distribution system water. Key criteria investigated include pretreatment requirements (antiscalant
selection and acid feed requirements), operating pressures and productivity measured by mass transfer
coefficient (MTC, gfd/psi), rejection performance, blend water quality, and concentrate water quality.
Membranes were operated at a high product water recovery of 85% throughout the study. The ECCV RO
pilot study used Beebe Draw groundwater from an existing well in Lochbuie, Colorado. This site was
chosen for the RO pilot study because the well provides a reliable water supply with water quality typical
of the Beebe Draw aquifer. ECCV is evaluating potential well sites that will be in proximity to the well
with similar water quality characteristics. Includes 4 references, tables, figures.
| Edition : | Vol. - No. |
| File Size : | 1
file |
| Note : | This product is unavailable in Ukraine, Russia, Belarus |
| Number of Pages : | 19 |
| Published : | 11/15/2004 |
