Presentations by Douglas Brown, PE, BCEE
Matches: 6
The 2% Problem Solution: Can Membranes Provide The Answer
This is a paper not only about concentrate disposal and experiences in high usable product water recovery, but also about the basic considerations necessary to achieve that high membrane recovery....
Special Applications for Drinking Water Membranes
Discussion of the five basic membrane technologies: MF, UF, NF, RO and ED; and the general class of membrane treatment capabilities. Examples of special treatment considerations in understanding how various drinking water membrane are utilized innovative applications....
Brine Minimization Alternatives
The development of membrane based brine minimization alternatives that do not require traditional lime softening pre-treatment provide the designers and operators of inland brackish water RO systems additional tools for concentrate management. The most cost effective alternative will depend on the feedwater chemistry, ultimate disposal options, fun...
Using Seawater Desalination to Diversify California Water Supply
This paper examines a SWRO project in California and the key concerns of energy cost, source water supply and brine disposal. An innovative design using a new generation hybrid configuration of low pressure SWRO membranes and high boron rejection SWRO membranes is presented....
Coping With Increasing Groundwater TDS at the Largest Inland RO Treatment Plant
The presentation provides an overview of the alternatives and the estimated costs for the Kay Bailey Hutchison (KBH) Desalination Facility in El Paso, Texas to deal with increasing TDS levels in the groundwater that they treat using a low pressure reverse osmosis (LPRO) process, and blend the low TDS permeate with groundwater. The groundwater TDS h...
Pilot Testing of Nanofiltration To Minimize TOC Levels and DBP Formation
The presentation describes the pilot testing arrangement with an infiltration supply well, ultrafiltration pre-treatment system and three stages of NF membranes to simulate full scale operation to reduce TOC to less than 0.8 mg/L. The pilot equipment was operated for three months at 90% to 96% recovery, and operational data were collected on pressu...