Treating Variable TDS Feed Water: Cost-Effective Existing System Modification and Upgrade
The Collier County North County Regional Water Treatment Plant (NCRWTP) is a 20-mgd facility including a 12-mgd nanofiltration (NF) system and an 8-mgd brackish water reverse osmosis (BWRO) system. The existing BWRO system treats the Upper Floridan Aquifer Wells. Soon after the RO system installation in 1999, four of the new Floridan wells were discovered […]
Regional Experience with Small Membrane Plants Leads to Improved Design and Operations
Maryland Environmental Service (MES) operates over 200 water and wastewater facilities throughout the State of Maryland. Among these are 11 membrane plants at facilities ranging from 5,000 to 900,000 GPD design flow rates for water and wastewater applications, with 3 more projects in the pipeline. The focus of this presentation is to collect and collate […]
Regional Experience with Small Membrane Plants Leads to Improved Design and Operations
Maryland Environmental Service (MES) operates over 200 water and wastewater facilities throughout the State of Maryland. Among these are 11 membrane plants at facilities ranging from 5,000 to 900,000 GPD design flow rates for water and wastewater applications, with 3 more projects in the pipeline. The focus of this presentation is to collect and collate […]
Application of a Pre-Engineered, Fully Automated, and Minimal Waste Discharge Ultrafiltration System for Remote Installation in Star Lake, Ny
A pre-engineered, fully automated ultrafiltration system piloted and commissioned for the Town of Fine, NY, is described. The Town, in coordination with neighboring users, elected to install an ultrafiltration system after thorough review of technology options and completion of on-site piloting to address the necessary upgrades to the water treatment plant and distribution system. The […]
Citywide Water Curtailment in Newport, OR – The Mystery of a Membrane Fouling That Created an Emergency Situation
The City of Newport, OR (City) operates a 6-million gallon per day (MGD) low pressure membrane water treatment plant (WTP). Starting mid-May 2020, the City experienced a rapid change in water production leading to an emergency situation four weeks later that caused a citywide water curtailment. Newport is a small town with a population of […]
Application of Two-Stage Ultrafiltration for High Water Recovery and Minimal Waste Discharge in Big Timber, MT
A two-stage ultrafiltration system designed, built, and commissioned for the City of Big Timber, MT, is described. After a thorough review of technology options, while determining how to bring their WTP system into compliance and work with existing infrastructure options and limits, the City elected to install a two-stage ultrafiltration system in part because of […]
Application of Two-Stage Ultrafiltration for High Water Recovery and Minimal Waste Discharge in Big Timber, MT
A two-stage ultrafiltration system designed, built, and commissioned for the City of Big Timber, MT, is described. After a thorough review of technology options, while determining how to bring their WTP system into compliance and work with existing infrastructure options and limits, the City elected to install a two-stage ultrafiltration system in part because of […]
Established Practices, Innovative Design, and New Products: A New Generation of Ultra High Pressure Desalination
In common parlance, reverse osmosis (RO) is often described as removing salt from water. In practice however, these processes squeeze water from a salt solution resulting in concentrate to be disposed or treated further in more expensive processes which pose significant challenges to the viability of a project. Disposal options may be cost-prohibitive or unavailable […]
Established Practices, Innovative Design, and New Products: A New Generation of Ultra High Pressure Desalination
In common parlance, reverse osmosis (RO) is often described as removing salt from water. In practice however, these processes squeeze water from a salt solution resulting in concentrate to be disposed or treated further in more expensive processes which pose significant challenges to the viability of a project. Disposal options may be cost-prohibitive or unavailable […]
A Novel Method for Modeling Brine and Permeate pH in RO and NF Systems
Concentrate pH in RO and NF applications plays a significant role in the formation of certain scales and the rejection of various contaminants. Incorrectly predicting pH can lead to excessive chemical costs or operational issues. Likewise, permeate pH is of utmost importance for determining post-treatment requirements for the product water. Most membrane and antiscalant projection […]
