Redefining Maximum Achievable Mixed Liquor Suspended Solids Concentrations in Membrane Bioreactors: Introducing Dissolved Oxygen in Membrane Bioreactors by Means of an Innovative Delivery Technology
The oxygen transfer efficiency in the aeration process plays a large role in determining the size and footprint of MBR equipment. Higher concentrations of MLSS tend to restrict the oxygen […]
Evaluating and Testing Ceramic Membranes to Expand Treatment Capacity
Results from the City of El Dorado?s (Kansas) pilot testing and information about the applicability of ceramic membranes are presented, as well as the capital and operating cost comparison of […]
UF-RO with Novel Pretreatment for a 15 mgd Water Supply Project
The Donna Bay Estuarine System located near Sarasota Florida was identified as a potential source of potable water. This project developed a treatment train comprised biological roughing filter for taste […]
Surface Water Treatment with Ultrafiltration: Algae Blooms Operational Challenges
This study reports on the application of ultrafiltration (UF) to treat a water source that is subject to algae blooms, with data that demonstrates how the membranes may best be […]
Managing Fouling in Nanofiltration Systems: Literature Review and Practical Experience in South Florida
In South Florida, nanofiltration (NF) has become a vital part of the water treatment landscape. The widespread use of nanofiltration in the region, combined with a challenging source water, makes […]
State Regulations and the Efficacy of Various Testing Methods for RO System Design
Normally membrane technologies are approved if they meet national and state drinking water regulations, but the flexibility and strictness of the approval process depends on the State. A key finding […]
Long Term Performance and Stability of Zeolite/Polyamide Thin Film Nanocomposite Membranes for Brackish Water Desalination
In work is a collaboration between the Arizona State University (ASU) and the United States Bureau of Reclamation Water Quality Improvement Center (WQIC) in Yuma, AZ. The paper presents the […]
Design and Implementation of a Pacific Ocean Algal Bloom Challenge Pilot Test for the Carlsbad Desalination Project
Algae blooms in seawater present a challenge for desalination plants and are highly variable and are a function of several conditions arising from currents and upwelling; also they can vary […]
Resolving Common Pre-treatment Problems
This presentation on pretreatment issues was from a preconference workshop in 2014 that described Optimizing Performance and Troubleshooting Techniques for Membrane Plants. The results of poor pretreatment is detailed with […]
Coagulation-Bubbling-Ultrafiltration: Effect of Flocsand Bubbles Properties on the Performance of the Hybrid Process
This paper describes a novel hybrid process of coagulation-bubbling-ultrafiltration to study membrane fouling phenomena by surface water. The relationship of bubbles, flocs and the hollow fibers was explored.
