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Web Seminar Archive

Available for a limited time for WERF subscribers. Note: WERF web seminars use the Intercall platform. When you register, you will be prompted to create an Intercall username and password.


Public Communications Perceptions & Early Communication Tools: How to Engage the Public on the Issue of Infrastructure Sustainability

View Presentation (Recorded January 20, 2010)

Public understanding and support for investment in aging infrastructure is essential to close the gap between current funding and projected needs. In response to the need identified by its utility subscribers, WERF has funded a research program on Strategic Asset Management (SAM) for wastewater and water utilities. One objective of this program is the development of an effective communications package – aimed at public officials, policymakers, utility managers, and rate payers – to encourage the adoption of SAM and provide guidance on its implementation in the utility environment.

This web seminar will discuss the initial results of WERF's SAM research program to understand elected and appointed officials’ perspectives on asset management and infrastructure sustainability. The authors use results of a survey, focus groups, interviews, and case studies to understand how public support for infrastructure sustainability can be attained. Relevant and readily usable tools that focus on the infrastructure sustainability issue are identified. The research identifies messages that elected, appointed, and salaried public officials can use to “tell their story” to stakeholders: That is, how the directed use of scarce resources leads to improved value per dollar and that their service is delivered in a competent, if not excellent, manner.

Speaker
Linda Blankenship, EMA


Explore New Technologies and Approaches for Wet Weather In-Plant Management

View Presentation (Recorded Wednesday, November 4, 2009)

From a watershed management perspective, it is critical to determine the overall effectiveness of in-plant wet weather treatment strategies used to manage peak flows and pollutants that impact water quality. Strategies for in-plant wet weather control often include new technologies or the age-old practice of blending. Wastewater treatment facilities use effluent blending to prevent overflows by maximizing plant flow during peak wet weather events, while minimizing detrimental impacts to receiving water quality. The practice typically involves diversion of primary effluent flows around secondary treatment and blending with secondary effluent prior to disinfection and discharge to receiving water.

This seminar will present a sample of new technologies for the management of in-plant wet weather flows, specifically, compressed media filtration. The filter can handle high solids loading from any excess flow area of the plant and reduce the TSS concentrations to within secondary standards.

WERF research on receiving water effects of wet weather blending practices is nearing completion. The research team analyzed the quality of upstream and downstream receiving water, other tributaries, and any overflows occurring simultaneously to compare relative impact, to illuminate how a watershed responds to peak wet weather events, and to determine the effect effluent blending has in the watershed.

Related Items
Agenda

Speakers
James Wheeler, PE, U.S. EPA – OWM
Jim Fitzpatrick, Black & Veatch
Kevin Weiss, U.S. EPA Office of Water
Don Gray, Ph.D., PE, East Bay Municipal Utilities District


Orientation to the Water Environment Research Foundation (WERF)

View Presentation (Recorded September 23, 2009)

WERF’s Executive Director, Glenn Reinhardt, provides an overview of WERF’s website and other information that will of interest to WERF subscribers. The session covers:

• An overview of www.werf.org
• How to find and download research reports
• A demonstration of some of the tools available on the WERF website
• Opportunities to become involved in WERF's research effort

Speakers
Glenn Reinhardt, WERF
Daniel M. Woltering, Ph.D., WERF


Security at Small Wastewater Treatment Plants – Practices You Need to Know

View Presentation (Recorded September 16, 2009)

Recent WERF research in wastewater treatment security (Project 04-CTS-12S) identifies a suite of security-related practices applicable for small wastewater systems. The final report outlines security practices consistent with the technical, managerial, and financial capacity of small systems. Project findings have been validated in a series of workshops with staff from small utilities and municipalities. A summary of these practices and the project findings will be presented in this web seminar designed for wastewater treatment plant managers, especially small ones.

Related Items
Agenda

Speaker
Chuck Herrick, Ph.D., Stratus Consulting


Determining the Costs and Effectiveness of Stormwater BMPs

View Presentation (Recorded June 3, 2009)

Stormwater managers, engineers, and others need simple models (i.e. planning tools) to assist in the appropriate selection and design of systems of BMPs to solve water quality problems. This web seminar will demonstrate a new WERF BMP spreadsheet-based tool, “BMP SELECT”, comprising: 1) a Simulation Module for BMP performance that computes the pollution loads that can be expected to be discharged to receiving waters as a result of the application of various BMPs in a watershed, and 2) a Cost Analysis Module that municipalities can use to assess the real costs that will be incurred if the BMP plan is implemented. This planning/screening tool will help determine tradeoffs and efficacy of various BMP scenarios in reducing pollution loads to receiving waters for a variety of pollutants including sediment, nutrients, and metals.This seminar will be of particular interest to municipal and industrial stormwater managers, consulting engineers and scientists, university researchers, planners, regulators, water quality modelers, and others active in non-point source issues.

Related Items
Agenda

Speakers
Christine Pomeroy, University of Utah
Larry Roesner, Colorado State
A. Charles Rowney, ACR


Assessing the Risks of Trace Organic Compounds in Biosolids

View Presentation (Recorded April 29, 2009)

WERF is examining the fate of estrogenic compounds and other trace organics in biosolids during digestion and dewatering. In this web seminar, the research team from AECOM, the U.S. Geological Survey, and the University of Arizona will present the state of knowledge and the findings of WERF’s latest study, including the significance of the levels found in biosolids. The seminar will brief participants on communicating about trace organic issues, drawing on some case studies examined by WERF research teams.

Related Items
Agenda
Seminar Presentation PDF

Speakers
Kathleen Esposito, AECOM
Edward Furlong, U.S. Geologic Survey
James Gray, U.S. Geologic Survey
David Quanrud, University of Arizona
Wendell Ela, University of Arizona
Rula Deeb, Malclom Pirnie, Inc.
George O'Connor, University of Florida


Estimating Mercury Bioaccumulation Potential from Wastewater Treatment Plants in Receiving Waters

View Presentation (Recorded March 18, 2009)

Is mercury (Hg) from wastewater treatment plants more or less bioavailable than Hg from other sources? This web seminar will review the findings of WERF research that defines bioavailability, explains how bioavailability is estimated, compares the bioavailability of common sources of mercury in the environment, and assesses the effects of wastewater treatment. Presenters  will examine a bioavailability screening assessment procedure and screening tool. They will also review an analysis of bioavailable mercury in seven wastewater treatment plants studied during the summer of 2008. Webinar participants will have the opportunity to ask questions related to the research and the bioavailability of mercury. The web seminar if free, but registration is required.

Related Items
Agenda
Seminar Presentation PDF

Speakers
J. David Dean, ArcTellus
Robert Mason, University of Connecticut


Working Toward Effective Use Attainability Decisions

View Presentation (Recorded February 11, 2009)

Agencies apply use attainability analysis (UAA) to review and potentially modify a waterbody’s designated uses, especially when uses or conditions change. This web seminar is based on WERF research that analyzed case studies and developed a number of recommendations for approaches to effective UAA decisions. The seminar will review success factors, discuss key issues and case studies, provide an overview of state UAA programs, and demonstrate a hypothetical application of lessons learned.  This session has helpful information for anyone working with communities in the development of a UAA. Regulators and water quality professionals who review, conduct, or evaluate UAAs should consider attending this webinar. Other stakeholders participating in a UAA will also find the information useful.

Related Items
Agenda
Seminar Presentation PDF

Speakers
Tom Dupuis, CH2M HILL, Inc.
Hans Holmberg, LimnoTech


Limits of Technology and Research on Nutrient Removal

View Presentation (Recorded October 8, 2008)

Participants will hear the latest news about activities and research under WERF’s Nutrient Removal Challenge. Dr. Amit Pramanik, WERF program director, moderates the two-hour seminar. Speakers include Dr. JB Neethling of HDR (who is leading a multi-disciplinary team of experts for the challenge), Professor David Stensel from the University of Washington, Dr. Charles Bott from Virginia Military Institute, and Dave Clark from HDR.

The seminar will begin with key findings from the LOT (limit of technology) compendium material. Speakers will present a typical process flow configuration for a wastewater facility designed and operated to treat nitrogen. They will also provide information on research into the various nitrogen species, and will discuss current characterizations of “biodegradable” and “bioavailable”. Presenters will cover protocols to determine these various fractions.

The seminar will also include key findings on research into external carbon needed for attached and suspended growth wastewater treatment processes. Experts will present highlights from a white paper on market-based and technology approaches to nutrient control and water quality protection.

Related Items
Seminar Presentation PDF

Speakers
JB Neethling
H. David Stensel
Charles Bott
David Clark


Collection Systems Research Update

View Presentation (Recorded September 24, 2008)

Fat, oil, and grease (FOG) is generated every day by food preparation and cleaning activities in commercial establishments and, on a smaller scale, by residential sewer usage. Another common problem, known to all utility maintenance personnel, is dense mats of root hair formed in pipes. FOG and root accumulations in the sanitary sewer collection system result in reduced capacity that can lead to sanitary sewer overflows (SSO) if not removed periodically. As the mat or accumulation commence, the slowed wastewater flow exacerbates the rate of accumulation and deposit of FOG materials onto the pipe walls, further reducing capacity.

In a recently completed WERF study, our speakers performed a detailed analysis of the chemical and physical makeup of FOG deposits in the sewer collection system. This type of information is a crucial first step in understanding what compounds should be limited in the effluent discharge of grease interceptors. The speakers also investigated how well grease interceptors removed FOG from food service establishment waste streams, applied root control strategies that involve chemical and or mechanical methods, and developed an alternative design methodology for sizing grease interceptors.

This web seminar will provide an overview of the results from this research study. Items to be discussed include:
• The chemical and physical makeup of FOG deposits in sewer collection systems
• The optimal design, sizing, and operations and maintenance criteria for grease interceptors based on field, laboratory, and modeling data
• The best root control methods for reduced root intrusions in sewer collection systems based on pilot-scale data from a variety of tree root species
• An alternative design methodology for sizing grease interceptors

Related Items
Seminar Presentation PDF

Speakers
Joel Ducoste
Tarek Aziz


Trace Organic Compounds and Implications for Wastewater Treatment

View Presentation (Recorded July 9, 2008)

Because WERF subscribers identified emerging contaminants as an important challenge facing the wastewater industry, this seminar will focus on trace organic compounds and the latest scientific developments and technological advancements for treated wastewater, reclaimed water, and receiving streams.

WERF will present the results of its recently completed technical brief, Trace Organic Compounds and the Implications for Wastewater Treatment. The discussion will also showcase research findings and recommendations from some of WERF’s relevant research efforts on trace organic compounds and nutrient removal treatment processes. WERF's completed work, Fate of Pharmaceuticals and Personal Care Products through Wastewater Treatment Processes, will be discussed, along with findings from WERF’s collaborative research effort with the WateReuse Foundation on Development of Indicators and Surrogates for Chemical Contaminant Removal during Wastewater Treatment and Reclamation.

Wastewater utility managers, engineers, wastewater industry scientists, plant operators, academics, and other interested water quality stakeholders will find this seminar of interest.

“Sewage treatment plants that operate with longer solids retention times remove more pharmaceuticals and personal care products.”
Environmental Science and Technology Online, 2006

Related Items
Agenda
Seminar Presentation PDF

Speakers
Paul Anderson
Jorg Drewes
Joan Oppenheimer


A Roadmap to Sustainable Energy Management: Every Journey Begins With a First Step

View Presentation (Recorded June 4, 2008)

Energy usage and management are major concerns for the wastewater industry due to rising costs and greater awareness of the energy - clean water - climate change relationship. Sustainable energy management for the wastewater industry, or the operation of a wastewater facility to produce enough energy to cover all its demands, is a laudable goal for the future. Currently, however, wastewater treatment operations consume 35% of a typical municipality’s energy requirements.

This seminar will present an overview of energy demand within the industry and provide specific information to help participants understand a plant’s electric consumption and electric utility bill. The seminar will discuss what equipment demands the most energy at a typical treatment facility and will provide specific examples of modifications that have helped other utilities improve their energy efficiency. A sustainable energy management program framework will be introduced that can be used to set energy efficiency objectives and targets, and monitor and measure progress with energy efficiency planning.

Speakers include Joe Cantwell, P.E. (SAIC) who manages Focus on Energy for Wisconsin where he has conducted numerous energy audits for wastewater facilities which have resulted in energy savings of 20-50% or more and Jim Horne (U.S. EPA Office of Wastewater Management), project officer of the 2008 publication Ensuring a Sustainable Future: An Energy Management Guidebook for Wastewater and Water Utilities.

Related Items
Agenda
Seminar Presentation PDF

Speakers
Joe Cantwell
Jim Horne


Can You Afford Not to Apply Benefit Cost Analysis to Biosolids Management Options?

View Presentation (Recorded May 21, 2008)

Numerous significant challenges face wastewater agencies as they consider how to best manage biosolids. Cost and energy requirements are at the top of the list. This seminar discusses recent WERF research which was designed to help wastewater agencies and other stakeholders understand the benefits and costs of the biosolids management options that are available to them.

As stewards of the environment and public trust, wastewater agencies need to consider the full range of benefits and costs associated with their activities. This means that they need to take into account all the impacts—good, bad, and uncertain—that their activities may impose on the broader community. These impacts now include ever increasing emphasis on considerations such as carbon footprint and climate change.

The research described includes the approaches, methods, and tools available to help utilities take a broad perspective and develop benefit-cost analysis (BCA) of their biosolids management options. The products of this research include tools and guidance to help utilities conduct BCAs, including the triple bottom line (TBL) approach. This research addresses one of the highest-ranked priorities identified at the 2003 WERF-EPA Biosolids Research Summit. The research also will play an important role in the implementation of the current WERF Optimization of Wastewater and Solids Operations (OWSO) Research Challenge.

Related Items
Agenda

Speakers
Diane Garvey
Bob Raucher
Donna Hull


Using Rainwater to Grow Livable Communities

Stormwater best management practices (BMPs) primarily function to remove pollutants and mitigate hydrologic impacts of development, but they can offer a host of other benefits, including: recreation, urban renewal, public education and involvement, aesthetics, and enhanced property values. Multi-benefit BMPs may offer communities a way to balance regulatory requirements with public safety and quality of life concerns, all within the constraints of scarce fiscal resources. Advocates for multi-benefit BMPs need the tools to overcome institutional, social, and regulatory barriers to successful project implementation.

This seminar will highlight findings of WERF research project 04-SW-1: Using Rainwater to Grow Livable Communities. Co-principle investigators, Jane Kulik of Wenk Associates and Leslie Shoemaker of Tetra Tech, Inc., will provide an overview of the project, present research findings, and describe select case study examples. They will highlight some of the many features of the web product (www.werf.org/livablecommunities), which was designed to offer municipal stormwater practitioners, engineers, landscape architects, public officials, and others the communication tools, case studies, and guidance needed to promote and implement multi-objective stormwater best management practices in their communities.

View Presentation (Recorded May 8, 2008)

Related Items
Agenda
Seminar Powerpoint Presentation
Seminar Presentation PDF

Speakers
Leslie Shoemaker
Jane Kulik



A Holistic Approach to Asset Management Using SIMPLE Knowledge Base for Water and Wastewater Operations

This web seminar will demo SIMPLE v 1.1 which is a web-based knowledge management system for Asset Management that is designed to i) provide a comprehensive understanding of asset management at strategic and operational levels; ii) promote information exchange among AM practitioners; and iii) help implement AM programs at water and wastewater utilities. The SIMPLE knowledge base is developed around seven primary elements of life-cycle based asset management and entails a user-friendly set of on-line practice guidelines, templates, and decision support tools. SIMPLE v1.1 was developed in coordination with AwwaRF.  

View SIMPLE v 1.1 Demonstration (Recorded April 22, 2008)          

Related Items
Agenda

Powerpoint Presentation

Speakers
Chris Rayburn
Steve Allbee
Duncan Rose


Current Wastewater Treatment Disinfection Practices and User Experiences

This web seminar focuses on the state of disinfection at major (>1 MGD) publicly owned treatment works in the United States. It will present a summary of the recently completed WERF report, Disinfection of Wastewater Effluent – Comparison of Alternative Technologies. A snapshot of the current practice of major POTWs indicates that three mature technologies are being used: chlorine, ultra-violet (UV), and ozone. The seminar will compare pros and cons of each of the three technologies, as well as capital and O&M costs for 1, 10, and 100 MGD dry weather design flows.

UV is an increasingly popular choice for disinfection, and is currently used by more than 20% of major POTWs in the U.S. This seminar will present results from a user survey of 103 full-scale UV facilities (roughly 10% of all UV systems at major POTWs). The survey covered a range of plant sizes and geographic regions in the U.S., the three basic UV lamp types, and most major manufacturers. Seminar participants will learn UV users’ reasons for choosing UV disinfection and their opinions on transitioning to UV, as well as information on training times, maintenance times, and costs. Participants will also benefit from the experience, insights, and advice shared by UV facilities across the country.

The seminar is presented by Dr. Larry Leong of Kennedy-Jenks, the lead principal investigator, and Dr. Naoko Munakata of the Sanitation Districts of Los Angeles County, and moderated by Dr. Amit Pramanik of WERF. Wastewater utility managers, engineers, and their consultants who are considering a change in wastewater disinfection systems are encouraged to participate.

View Presentation (Recorded March 19, 2008)

Related Items
Agenda

Speakers
Lawrence Leong
Naoko Munakata


Microbial Risk Assessment Interface Tool: User Documentation Training Forum

This training forum serves as an instructional guide for WERF’s Microbial Risk Assessment (MRA) Interface Tool, a user friendly software package designed to easily and effectively evaluate the potential public health risk associated with pathogen ingestion specific to exposure to reclaimed water uses.

The MRA interface tool lets users specify a pathogen, additional or incremental wastewater treatment that occurs prior to human exposure, and route of human exposure to the pathogen of interest. Consistent with the results of the WERF project Evaluation of Microbial Risk Assessment Techniques and Applications in Water Reclamation (stock no. 00PUM3), the MRA interface tool recommends a static (individual-based) or dynamic (population-based) risk characterization methodology based on the input data and the user’s model parameter selections.  An estimate of the potential public health risk associated with the specific pathogen and exposure scenario is made via numerical simulation. The results are presented graphically.

The training forum will also include a discussion of how water and wastewater utility managers can make risk-based management decisions about reclaimed water treatment, end uses, and management options.

View Presentation (Recorded January 23, 2008)

Related Items
Agenda

Speakers
Adam Olivieri, Eisenberg, Olivieri and Associates (EOA), Inc.
Jeff Soller, Soller Environmental


Waterbody Assessment and Listing Processes: Evaluation, Current Needs, and Next Steps

This web seminar discusses the findings and recommendations of WERF's research project, Evaluating Waterbody Assessment and Listing Processes: Integration of Monitoring and Evaluative Techniques. It provides the perspectives of state regulators in terms of preparing Integrated Reports and the U.S. EPA‘s perspective on possible options for the states. 

The report provides guidance to states on how to effectively integrate monitoring program design with better data evaluation techniques and data quality management programs and addresses development of assessment methodologies that are more scientifically defensible. These recommendations are intended to provide a technical resource to the states so they can determine which waterbodies should be designated as impaired and included on their 303(d) lists. The seminar concludes with a discussion of how the results of the research interplay with the options discussed by U.S. EPA.

View Presentation (Recorded October 9, 2007)                   

Related Items
Agenda

Speakers
Lindsay Griffith
Tom Stiles
Michael Haire


Removing Nutrients from Wastewater: The Past, Present, and Future

This web seminar focuses on the removal of nutrients (nitrogen, N and phosphorus, P) from wastewater treatment facilities. Speakers include Dr. J.B. Neethling of HDR, Inc.; Professor Krishna Pagilla of IIT-Chicago, Phil Zahreddine of EPA’s Office of Wastewater Management, Jim Pendergast of EPA’s Office of Science and Technology and the Office of Water, and Amit Pramanik of WERF. Participants will gain a global perspective on this subject and why it is important to control and remove these two key nutrients. Key findings from WERF’s project lead by Dr. Pagilla on Sustainable Technologies to Achieve Very Low Nitrogen and Phosphorus Effluent Levels (02-CTS-1, in publication) will be presented. Participants will learn what worked to achieve low levels of effluent N or P and for both simultaneously; and get an update on the issue of refractory dissolved organic nitrogen. Also included will be an update on WERF’s Nutrient Removal Challenge that is being led by a team of experts headed by Dr. Neethling, a report on the outcomes of the stakeholder workshop (held in conjunction with the WEF/ IWA Nutrient Removal Specialty Conference in March 2007), information on what we know and don’t know, what the gaps are, and where we are going on this important and pressing subject.

View Presentation (Recorded July 18, 2007)

Related Items
Agenda

Speakers
Jim Pendergast
Krishna Pagilla
Phil Zahreddine
JB Neethling


Cyber Security Tool: Protecting Water and Wastewater Process Control Systems

Join WERF for an online demo of CS2SAT-WATER, a desktop software cyber security tool designed to guide your facility, step-by-step, through the collection of control system information and provide recommendations for improved protection of computerized and automated systems against hacker attacks.

WERF, in collaboration with the American Water Works Association Research Foundation (AwwaRF), undertook research under the auspices of a U.S. EPA Security Grant to develop the Control Systems Cyber Security Self-Assessment Tool, or CS2SAT-WATER. The tool’s design embraces the security architecture developed through the Department of Homeland Security (DHS) Control Systems Security Program (CSSP).

Recommendations provided by the tool are pulled from a database of best available cyber security practices. Each recommendation is linked to a set of actions that can be applied to remediate specific security vulnerabilities. During the webcast, participants will get to see the tool in action, learn its capabilities, and find out more about current rollout plans. 

Water and wastewater utility managers, engineers and IT staff, local government officials and regulators, and technical operations staff are encouraged to attend.

Related Items
Agenda
Cyber Security Presentation

Speakers
Candace Chan-Sands
Trent Nelson
Clifton Davis
Greg Spraul


Biosolids Research Summit Update

This seminar, presented with U.S. EPA, provides an update on pertinent biosolids-related activities that were implemented following the 2003 Biosolids Research Summit. The Summit was conducted in response to the National Research Council report, Biosolids Applied to Land: Advancing Standards and Practices. Summit participants, who included traditional and nontraditional stakeholders from the public arena, represented a range of views on the appropriateness and safety of land applied biosolids/treated sewage sludge.
 
In this seminar WERF and U.S. EPA provide overviews of biosolids research that has been completed or is currently underway to address the needs identified at the Summit. Presentations of key projects and activities related to a number of the highest-priority research project concepts identified at the Summit are also presented.

View Presentation (Recorded March 28, 2007)

Related Materials:
Agenda

Speakers:
Steve Wing, University of North Carolina
Bob Raucher, Stratus
Matt Higgins, Bucknell University
Ned Beecher, NEBRA
Jay Witherspoon, CH2M HILL
Rick Stevens, U.S. EPA


Overcoming Barriers to Equitable Consideration of Decentralized Wastewater Treatment

This seminar presents the final results from an ongoing WERF research project, Overcoming Barriers to Evaluation and Use of Decentralized Wastewater Technologies and Management (04-DEC-2).

The project considers barriers both to the use of individual on-site systems (septic systems) and cluster systems, where part of the treatment and dispersal process takes place offsite. The focus of the project is on what engineers can do to overcome barriers. Solutions and actions were developed which will help ensure that decentralized wastewater treatment options are considered more frequently.

View Presentation (Recorded March 6, 2007)

Related Materials:
Agenda
Question and Answer Document

Speakers:
Mary Clark, Stone Environmental Inc.
D. Scott Johnstone, P.E., Consultant to Stone Environmental Inc.
Richard Pinkham, Booz Allen Hamilton


International Stormwater Best Management Practices Database: A Resource for BMP Selection & Design Guidance

The International Stormwater Best Management Practices (BMP) Database (www.bmpdatabase.org) serves as a central clearinghouse for BMP data to help improve BMP selection, design, and performance. This broadcast will introduce you to the history and significant findings of the BMP Database. Additionally, guidance on monitoring and examples of how various municipalities and DOTs are contributing to and using the database will be included. Ample opportunity will be provided for participant questions.

The Center for Transportation and the Environment (CTE) hosted this nationally transmitted broadcast via satellite television and the internet. 

View Presentation (Recorded November 29, 2006)
FREE DVD Copy of the Broadcast


Keeping the Well from Going Dry: Sustainable Water Resources Management

Engineering and scientific solutions are necessary to solve water problems, but not enough to support sustainable water resources management. That's the bottom line of a WERF research report on strategies for moving toward sustainable water resources management. If you are a water quality manager working with wastewater, drinking water, groundwater, surface water, or water for reuse; you are sure to find this web seminar informative and interesting.

View Presentation (Recorded March 15, 2006)

Speakers:
Kent Thornton, Ph.D., ftn Associates, Ltd


Recent Advances in Conditioning and Dewatering Wastewater Solids

Almost half the cost of treating wastewater is incurred in the separation and handling of solids from liquids. If treatment plants can find better ways to release additional water from solids, the total mass of their dewatered cake will be significantly less—substantially reducing processing and handling costs and saving millions of dollars annually.

Two recently completed WERF studies on this topic will be featured in this informative web seminar. The first helps explain the factors that affect polymer demand for conditioning and how to apply the knowledge gained to reduce this demand. The second looks at ways to better understand and improve the complex process of dewatering.

View Presentation: (Recorded April 19, 2006)
Part 1
Part 2

Speakers:
Sudhir Murthy, Ph.D., P.E., DCWASA
Matthew Higgins, Ph.D., P.E., Bucknell University
Sarah Miller, CSIRO, Australia


Securing National Wastewater Infrastructure

The security of wastewater facilities poses unique problems due to the highly decentralized nature of infrastructure assets covering a large service area. Shutting off or isolating parts of a wastewater system during contamination events may cause a public health crisis. This seminar will provide a first-hand look at web-based tools that will be available to wastewater utilities in the areas of cyber security and GIS-based C/B/R contamination assessment for collection systems. Ongoing security-related activities at U.S. EPA and its liaison with the department of homeland security will also be discussed.

View Presentation (Recorded June 14, 2006)

Speakers:
Candace Chan-Sands, EMA Inc.
Bill Samuels, SAIC
Leonard Casson, University of Pittsburgh
Ken Rubin, PA Consulting


Land Application of Biosolids: What's in the Air?

This seminar will provide the results of a WERF research project conducted by Jordan Peccia formally with Arizona State University pairing a comprehensive literature review with field results derived from state-of-the-art bioaerosol measurement to investigate the concentration, transport, and type of bioaerosols generated during the land application of class B biosolids. In addition, two other research initiatives seeking to address the lack of data on bioaerosols emitted from biosolids land application processes will be further discussed.

View Presentation (Recorded August 23, 2006)

Speakers:
Patricia Millner, USDA
Jordan Peccia,
Ph.D., P.E.,Yale University
Ian Pepper, Ph.D., University of Arizona
Suresh D. Pillai, Ph.D.,
Texas A&M University


Energy Management: Opportunities for Energy Efficiency and On-Site Recovery

Energy use accounts for approximately 35% of a wastewater treatment facility's total cost of providing wastewater treatment services. There is a vital need for wastewater facilities to adopt cost-effective energy management programs including a serious look into onsite energy recovery options. The challenge is how to select an appropriate energy management system or recovery technology under a given set of conditions. This seminar provides an overview of available energy management and energy efficiency programs, such as ENERGY STAR; WERF's ongoing involvement in the development of analytic bioenergy recovery tools such as LCAMER or Lifecycle Cost Assessment Manager for Energy Recovery; and ways of exploiting the potential synergy between sludge digestion, Class A biosolids production, and onsite green-power generation at wastewater facilities.

View Presentation (Recorded October 11, 2006)

Speakers:
Ted Jones; Consortium for Energy Efficiency
Hugh Monteith; Hydromantis, Inc.
John Willis; Brown & Caldwell


BMP Strategies for Aesthetic Design and Public Acceptance

This seminar highlights the results of a research study evaluating the social, aesthetic, and community factors that contribute to the success or failure of stormwater BMPs. The project team presents their findings to date, including a set of guiding principles that can lead to successful BMPs, as well as the results of site visits to communities that have had varying levels of success with BMP implementation. Three national experts in BMP design and implementation also discuss stormwater management projects in their area and the factors that contributed to success.

View Presentation (Recorded November 15, 2006)
Follow-Up Document (PDF, 550KB)

Speakers:
Jane Kulik; Wenk Associates
Leslie Shoemaker; Tetra Tech
Fred Rozumalski; Barr Engineering
Jim Patchett; Conservation Design Forum Inc.
Carol Mayer-Reed; Mayer/Reed


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