Presentations by Troy Walker
Matches: 19
Large Scale Desalination The Australian Experience
This PowerPoint discusses the experiences in large scale desalination that were done in Australia....
Seawater Design Hurdles
This presentation provides design considerations for the construction of seawater desalting facilities. The presentation is divided into sections for intake, pretreatment, reverse osmosis process, and post-treatment design. Key topics include corrosion management and energy recovery....
Are Operations Ready for Direct Potable Reuse?
With the increasing frequency and severity of drought, agencies across the United States and in particular in Texas have been turning to the potable reuse of municipal wastewater, either directly or indirectly, to help meet growing demands. It is important for any water treatment facility to have a high level of reliability to ensure water quality...
High Pressure Membrane Plant Design
This presentation from a preconference workshop in 2014 for Back to Basics on membrane technology discusses various aspects of a reverse osmosis system design. Included are the impact of water quality, desired permeate quality and design influences....
Has Your Membrane System Had A Tune Up Lately?
The first part of the presentation will discuss how to review membrane system performance by looking at historical trends, checking operating sequences to determine effectiveness and perform a close review of cleaning performance checking appropriate chemical dose/strength to identify operational changes. The goal is to improve overall efficiency a...
Know When to Hold ?em, Know When to Fold ?em. How Long Will Low Pressure Membranes Last?
As a major investment, membrane life has a significant impact on the life cycle cost of a treatment facility with the key to optimum performance is the right balance between membrane life and good membrane performance. Production and membrane integrity are two drivers in determining the life of a membrane. If the production requirements can be met,...
High Pressure Membrane Plant Design
Provides an overview of NF/RO design. Includes guidance on deisgn parameters requried for successful implimentation of NF/RO projects...
Establishing Critical Control Points in Membrane and Non-Membrane
Discussion of control points for direct potable and indirect potable reuse risk assesments. Includes options for reuse in the context of southern Florida along with an analysis of how process selection decisions are made when implimenting a reuse scheme....
Debugging the Plant - Managing Reverse Osmosis Biofouling at a Groundwater Treatment Plant
The Arcadia Water Treatment Plant treats local groundwater to provide up to 10 MGD of treated water as part of the City of Santa Monica?s drinking water supply. The plant removes iron and manganese, and then treats a portion of the water with reverse osmosis as a softening process to achieve desired levels of hardness. Shortly following commissioni...
Direct Potable Reuse - Getting Operations Ready for the Next Bold Leap
This paper will present some the development of operation and maintenance plan and training and certification framework for Direct Potable Reuse Systems (DPR)...
Custom Engineered Microfiltration - West Basin's Upgrade at The Carson Regional Water Recycling Facility
This presentation provides an overview of the design of a custom engineered microfiltration for West Basin Municipal Water District. The system is designed to accept 6 different membrane modules. The presentation will review design and procurement challenges for this system....
Advanced MBR Technology to Improve Water Quality and Increase Use of Recycled Water for West Basin Municipal Water District
This presentation will share the successful planning and design of an innovative tertiary membrane bioreactor (TMBR) facility. This facility will provide flexibility to meet future water quality challenges, reduce costs to enable water reuse while preserving potable water, and manage operational costs through innovative design....
One Dose Fits All - Or Does It? The Use of Chloramine in Reuse Applications
This presentation will review the use of chloramine as a means of RO membrane fouling control in reuse applications and discuss the advantages and challenges of this approach. It will use case studies in reuse from the United States and around the world....
10 Years of MBR Operation: The Broad Run Water Reclamation Facility Experience
The BRWRF is an 11 mgd advanced treatment facility, commissioned in 2008 with the world?s largest membrane bioreactor (MBR). The BRWRF effluent augments the Potomac River and provides non-potable reuse to data centers for cooling. This paper conveys the experience of operating a large MBR facility with a focus on process operation, monitoring, and ...
Large-Diameter (16") Membranes at Scottsdale Water Campus - Advantages and Challenges of Operation
This presentation will provide an overview of the large diameter membrane assessment, including a review of operating and troubleshooting data. It will identify some of the advantages of large diameter membranes along with some of the operational challenges....
We Know Where We Are Going, But Do We Know Where We've Been?
This presentation will review the history and development of these treatment processes, with a particular focus on RO based processes. From the early application of RO to desalting water, it will review some of the important advances in treatment of membranes in reuse....
Operator Skills for Working With Membranes: What Agencies Need Their Operators to Know
This paper will cover membrane applications and related operator skills required for efficient operations, and why agencies need to invest in their operators. The author holds a B.S. in Environmental Science from W.W.U. and a Grade III California State wastewater operator certificate. He works as a Wastewater Plant Operator II at EBMUD where he ope...
Using MBR for On Site Water Recovery in New Mexico - Challenges and Solutions
The Albuquerque Bernalillo County Water Utility Authority (Water Authority) is developing a state of the art on site water resources recovery plant, located at a shopping center in the uptown district of Albuquerque. The Winrock Town Center was originally constructed in the early 1960s and is currently undergoing a complete renovation. The vision f...