Optimizing Reverse Osmosis Pretreatment Chemicals in Orange County?s Groundwater Replenishment System
Report on optimizing RO pretreatment chemicals at Orange County Water District’s (OCWD) 100 mgd Ground Water Replenishment System (GWRS); an advanced wastewater purification facility in Southern California. The source water […]
Overcoming Obstacles to Create an Emergency Water Supply in California?s Water Crisis
Saga of the Cambria Community Service District starting in 1987 to develop a seawater desalination system stymied by the California Coastal Commission was abandon after a tumultuous period of opposition […]
Performance Testing of the Silicon Valley Advanced Water Purification Center?s 8 MGD Integrated Membrane System to Expand Reuse and Reliability
The Santa Clara Water District with the City of San Jose, CA commissioned the Silicon Valley Advanced Water Purification Center (SVAWPC). The state of the art facility treats secondary effluent […]
Cost-Effective Operations: The Tale of The City of Lodi
During the first year of operation, the City of Lodi and its consultant reviewed options to reduce operation and maintenance (O&M) costs. Two major opportunities were identified that could be […]
Direct Ultrafiltration as a feasible technology for drinking water production: Three Case Studies in Brazil
Paper presents results of 3 pilot studies demonstrating ultrafiltration (UF) as a feasible technology alternative to conventional coagulation/filtration for treating surface water for potable use. All three case studies involve […]
Operation Case Study of Tropical Island Ultrafiltration Plant
The Guam Water Authority owns and operates the Ugum WTP located on the southeast portion of the Island of Guam treating water from the Ugum River. The paper discusses upgrading […]
Multi-City Collaborative Membrane Filtration Pilot Study: Past Outcomes and Present Benefits
A collaborative pilot study provided eleven months of pilot testing data on four membrane vendors at a fraction of the cost to each utility of an independent study. Engineers and […]
Energy Recovery Case Studies For Brackish Water Membrane Treatment Systems
The use of inter-stage boost on brackish reverse osmosis (RO) membrane treatment systems is not only a green approach to reducing operating costs and saving money, but can restore and […]
Feasible and Cost Effective MBR Applications – An Engineers Experience
This paper presents three projects that have been implemented in Ohio with the MBR activated sludge technology. It includes one plant that is the largest constructed in North American and […]
Fighting permeability loss with a revised recovery cleaning schedule
This paper analyses the impact of a revised cleaning schedule based on the permeability of the membranes and the financial impact of increased chemical usage. A side-by-side comparison was conducted […]
