Overview and details of the sessions of this conference. Please select a date or location to show only sessions at that day or location. Please select a single session for detailed view (with abstracts and downloads if available).
|Date: Sunday, 21/Oct/2018|
|9:00am - 4:30pm||Precon Workshop 1: Cogeneration – It’s a Gas! ...AKA The Feasibility of Cogeneration|
Session Chair: Christina Davenport, City of Bend;
|Boise Centre West 120A|
Cogeneration – It’s a Gas! ...AKA The Feasibility of Cogeneration
1Clean Water Services; 2Black and Veatch; 3CH2M now Jacobs; 4Cornerstone Engineering; 5Clean Water Services; 6Brown and Caldwell; 7King County; 8City of Bend; 9Ameresco; , , , , ,
This workshop will cover the components of cogeneration in an attempt to answer the question of the feasibility of cogeneration. There will be an overview of the costs associated with procuring, operating, and maintaining a cogeneration facility through its lifecycle.
Included in the analysis will be a list of benefits and revenue streams that can be generated to cover some or all of the costs associated with running such a facility. Alternatives to cogeneration will be discussed as well.
The workshop will include a discussion of costs, revenues, and benefits for plant managers and decision makers to help determine if co-generation is right for your facility.
Learning Objectives: Factors and means that go into the decision of whether to implement cogeneration at your facility.
Who Should Attend? Plant staff, plant managers, municipal decision makers.
Organized by Joel Borchers POM Committee (Clean Water Services) and Christina Davenport (Resource Recovery Commitee (City of Bend) Moderated by Susan Hildreth, Residuals & Biosolids Committee (King County) and Christina Davenport.
Agenda and Presentations
9:00 – 9:15 Introduction
9:15 – 9:45 Turn up the Heat - Anthony Tartaglione, Black and Veatch "This presentation will benefit utility managers and operational staff by providing guidance on how to improve project efficiency. Alternatives considered to increase the hot water supply and performance are discussed along with capital and life cycle costs for each. The approach described in this paper capitalizes upon operational staff knowledge to potentially utilize and integrate existing systems in the design increasing efficiencies."
9:45 – 10:15 Lessons learned from Planning, Designing, Constructing and Commissioning Biogas-Fueled Cogeneration Systems – David L. Parry, Jacobs "Insights from different phases of the projects are given with regards to selection of cogeneration units, biogas treatment process, hydronic system design, and electrical interconnection."
10:15 – 10:30 break
10:30 – 11:00 Conversion of WWTP Digester Gas into Compressed Natural Gas Vehicle Fuel – Jessica Bernardini, Cornerstone Environmental Group, A Tetra Tech Company Digester biogas upgrade to renewable natural gas, case studies
11:00 – 12:00 Cost of Operating and Maintaining a Cogeneration System – Patrick Orr, Clean Water Services "A fully functioning cogeneration facility consists of many systems. Operating and maintaining each of the systems will have a cost associated with it. These costs will typically include labor, material or parts, and consumables. Developing a plan for operating and maintaining each system will allow for budgeting and labor requirements associated with a successful cogeneration facility."
12:00 – 1:00 lunch break
1:00 – 2:00 Valuing Carbon -Incentives for Beneficial Use of Digester Gas and Other Sustainable Projects - Steve Krugel, Brown and Caldwell "The presentation will discuss ways communities are adding value to carbon and other sustainable benefits into their traditional cost evaluations and how this may incentivize project development. Topics covered : carbon valuation approaches, including those based on cap and trade markets, the social cost of carbon and adopted values based strictly on community environmental ethic, and addition available direct monetary incentives for some uses such as Renewable Identification Number (RIN) credits."
2:00 – 3:00 A Presentation on the Cogen Project at Central Kitsap WWTP – Peter Zemke, Brown and Caldwell "Central Kitsap WWTP provides an example of how cogeneration can be feasible for smaller municipalities. This presentation describes the performance and features of the plant’s 250-kW cogeneration system."
3:00 – 3:15 Break
3:15 - 4:15 Cogeneration feasibility study for Bend, Oregon - Jeremy Keller, Ameresco "A presentation on reducing the biogas monetization options to consider for your digester with an early focus on return on investment and risk transfer.”
4:15 - 4:30 Q&A and Wrap up
|10:00am - 4:30pm||Precon Workshop 2: Find the Leader Within You|
Session Chair: Amy Dammarell, HDR;
|Boise Centre West 120B|
Find the Leader within You
1HDR Engineering; 2Clean Water Services; 3Tetra Tech; 4City of Boise; 5Parametrix; 6WA Dept of Ecology; , , , ,
Discover your Leadership Potential! Whether you’re an aspiring leader or one who’s been there, join us for an exploration of leaders at their best.
This workshop is based on the 5 leadership principles outlined in the book The Leadership Challenge” by Kouzes and Posner. The workshop includes breakouts and table discussions to encourage shared learning.
Participation in this workshop will help operators, supervisors, and managers perform their duties better by helping them work together better.
With a firm understanding of the five practices of exemplary leadership participants will be better employees, supervisors, and managers, understanding what it takes to help lead truly outstanding performance.
Sponsored by the PNCWA Leadership Development Committee Amy Dammarell, Commmittee Chair (HDR Engineering) Overall Facilitator and Moderator
10:00 – 10:10 Welcome and Introductions
10:10 - 10:25 Outcomes and Expectations
10:20 – 10:40 The Leadership Challenge Introduction
The Five Practices
10:40 – 11:20 Model the Way
11:20 – 12:00 Inspire a Shared Vision
Lunch 12:00 – 1:00
1:00 – 1:40 Challenge the Process
1:40 – 2:20 Enable Others to Act
2:20 – 3:00 Encourage the Heart
3:00 – 3:15 Break
3:15 – 4:00 Leadership Values
4:00 – 4:30 Leaders Share Their Journey
The Five Practices of Exemplary Leadership
Model the Way
“Leaders stand up for their beliefs…They show by their actions that they live by the values they profess.”
Inspire a Shared Vision
“The most important role of vision in organizational life is to give focus to human energy”
Challenge the Process
“Change is the work of leaders…And all change requires that leaders actively seek ways to make things better – to grow, innovate, and improve.”
Enable Others to Act
“Leaders bring people together, creating an atmosphere where people understand that they have a shared fate…Leaders make sure that everyone wins.”
Encourage the Heart
“Leaders express pride in the accomplishments of their teams…They make people feel like heroes.”
|10:00am - 5:00pm||Precon Workshop 3: Aerobic Granular Sludge (AGS) - An Innovation for Increased Performance and Capacity in Existing Footprint|
Session Chair: Li Lei, Jacobs;
|Boise Centre West 110A|
Aerobic Granular Sludge (AGS) - An Innovation for Increased Performance and Capacity within Existing Footprint
1CH2M (now Jacobs); 2Carollo; 3University of Washington; 4HDR; 5NEWhub; 6Aqua-Aerobic Systems, Inc.; , , firstname.lastname@example.org, , ,
By developing granular sludge that settle significantly better than conventional flocculent activated sludge, the innovative aerobic granular sludge process has gained tremendous interests in its capability of holding 2-3 times the biomass inventory of an activated sludge process within the same space, increasing capacity, enhancing nutrient removal, while offering energy savings.
The workshop will provide the attendees with the state of the art of the aerobic granular sludge process, and feature leading practitioners from forward-thinking municipalities/utilities, academia, consulting fields, and innovative technology providers.
The objectives of the workshop are to provide the attendees with the state of the art of the aerobic granular sludge process, including its fundamentals, worldwide applications, case studies, challenges of and design approaches to full-scale implementations, highlights of researches, and initiatives in pacific Northwest.
The workshop will also provide an opportunity through panel discussions to exchange ideas with respect to the development, assessment and implementation of aerobic granular sludge technology in existing infrastructure.
10:00 - 10:05 am: Welcome & Introductions, Dr. L. Lei, Facilitator, Jacobs
10:05 - 11:05 am: State of Art of Aerobic Granular Sludge Process and Initiatives in Pacific Northwest, Dr. H. Dave Stensel, Univ. of Washington; Dr. B. Figdore, HDR
11:00 - 12:00 pm: Approaching Aerobic Granular Sludge in Continuous Flow Processes using inDENSE® Technology. Dr. S. Murthy. NEWhub.
12:00 - 1:00 pm: Lunch Break
1:00 - 1:20: Collecting Attendee's Questions on Aerobic Granular Sludge Processes, Dr. L. Lei, Facilitator, Jacobs
1:20 - 2:15 pm: Molecular Biology Findings and Implications for Aerobic Granular Sludge Processes, Dr. M. Winkler, Univ. of Washington
2:15 - 3:00 pm: Aqua-Aerobic Systems, Inc. AquaNereda® Aerobic Granular Sludge: Worldwide Operational Experience in Full Scale Plants and the First plant in USA, Mr. M. de los Santos, Aqua-Aerobic Systems, Inc.
3:00 - 3:15 pm: Refreshment Break
3:15 - 4:15 pm: Design and Case Studies of Aerobic Granular Sludge Plants, Mr. B. Johnson, P.E., BCEE, IWA Fellow, Jacobs
4:15 - 5:00 pm: Panel Discussions, All Speakers
Speakers and presentations featured:
Dr. H David Stensel. Univ. of Washington. State of Art of Aerobic Granular Sludge Process and Initiatives in Pacific Northwest. The objectives of this presentation are to provide the attendees with a background on the fundamentals of granular activated sludge and the current progress on a pilot plant study by the University of Washington and King County to evaluate the use of sidestream granular sludge bioaugmentation to enable mainstream nitrogen removal in a short-solids retention time (SRT) flocculent activated sludge process.
The outline of the presentation is as follows:
i. Seed source and “baby granules”
ii. Start up operation and performance of sidestream granular sludge system treating anaerobic digestion centrate
iii. Performance of mainstream treatment system after granular sludge addition
Dr. Sudhir Murthy. NEWhub. Approaching Aerobic Granular Sludge in Continuous Flow Processes using the inDENSE® Technology. The use of hydrocyclones in combination with an anaerobic zone metabolic selector for densification and bioP is an innovative approach for low capital cost investment for wastewater treatment plants to improve both phosphorus removal performance and increase process capacity simultaneously. Hydrocyclones retain phosphorus-accumulating organisms in the underflow leading to stabilization in treatment systems with seasonal variation by maintaining the biomass population. In some process configurations, it can lead to granulation.
This presentation highlights the implementations of hydrocyclones and performance enhancement at Hampton Roads Sanitation District’s (HRSD) James River Wastewater Treatment Plant (JRTP) and Urbanna Wastewater Treatment Plant (UBTP), VA and the Soyen plant near Munich, Germany. The three plants have very different configurations.
The JRTP is rated at 20 MGD, utilizes a 4-stage Bardenpho configuration with an IFAS system, and had historically poor settleability prior to the hydrocyclone installation, with SVI values of 140± 34 mL/g, not associated with filaments, nutrient deficiencies, or poor monovalent to divalent cation ratios. The influent wastewater characteristics, such as soluble chemical oxygen demand (sCOD) of 250 to 350 mg L-1, are favorable and allow for seasonal biological phosphorus removal without a formal anaerobic selector.
UBTP is rated at 0.10 MGD with two 0.050 MGD parallel trains operated in a Modified Ludzack-Ettinger (MLE) configuration. Previously the UBTP was an extended aeration system with poor settling sludge due to denitrification in the secondary clarifiers. Hydrocyclones were implemented at both plants as external selectors for selectively wasting poor settling flocs while retaining dense particles for improved settleability, in addition to elucidate the extent of metabolic selection with and without a formal anaerobic selector to enhance biological phosphorus removal performance.
Finally, the BIOCOS process (a modified SBR) at the Soyen plant will also be discussed, which was converted to perform Bio-P by using an external anerobic selector as well as an external hydrocyclone.
Dr. Mari Winkler. Univ. of Washington. Microbiology and Optimization of Granule Aerobic Sludge Process for Enhancing Mainstream Nitrogen Removal Capacities at Low Costs. This talk involves providing an opportunity to exchange ideas with respect to the development, assessment and implementation of aerobic granular sludge technology in existing infrastructure. A critical limitation of the aerobic granular sludge technology is that it cannot be readily adapted to most existing activated sludge process reactor geometries, which clearly limits its broader application. Therefore, it is a challenge to find new ways how to retrofit existing plants for aerobic granular sludge technology.
This talk will focus on the microbiological aspects of granule and floc competition and on the population dynamics in these systems.
In addition, this talk will focus on the enhancement of mainstream nitrogen removal capacities at minimal costs by determining optimal conditions for promoting growth of ammonium oxidizing archaea (AOA) with Anaerobic ammonium oxidizing bacteria (Anammox) within single granules using
The aim of this talk is to establish actionable roadmaps for the further development, demonstration, and implementation of granular sludge in existing treatment facilities.
Mr. Manuel de los Santos. Aqua-Aerobic Systems, Inc. AquaNereda® Aerobic Granular Sludge: Worldwide Operational Experience in Full Scale Plants and the First plant in USA. A research partnership in the Netherlands led to the development of a first technology applying aerobic granular sludge in a full-scale wastewater treatment plant. Currently, over 30 full-scale AGS plants are operational or under design/construction worldwide.
This SBR type AGS system creates proper conditions to reliably maintain a stable granule within a single tank, without the need of a carrier, secondary clarifiers, selectors, separate compartments, or return sludge pumping stations.
The layered microbial community within the granule structure enable simultaneous processes to take place in the granular biomass, including enhanced biological phosphorus reduction, and simultaneous nitrification/denitrification, and makes the system more resistant to toxic shocks and fluctuations in chemicals, load, pH, and salinity than conventional systems. The enhanced settling properties (SVI at 30-50 mL/g) allow the system to be designed for 8 g/L of MLSS, reducing footprint by up to 75% and provideing up to 50% energy savings when compared to activated sludge systems.
The AGS technology is now entering U.S. as a promising alternative for capacity increase, retrofit, treatment upgrades with limited footprint, and enhance biological nutrient removal. To validate the technology in the US, a full-scale demonstration facility is in development and an AGS pilot unit has been constructed. Additionally, a full-scale AGS application is currently in the design stages for a municipality in Alabama.
This presentation will cover details on the granular sludge technology, the advantages that it offers, its worldwide operational experience and the efforts to introduce the technology to the US market.
Mr. Bruce Johnson, P.E., BCEE, IWA Fellow, Jacobs. Design and Case Studies of Aerobic Granular Sludge Plants. The design of Aerobic Granular Sludge (AGS) facilities falls into two major categories:
Both of these systems rely upon, and encourage, the development of aerobic granular biomass collections. These granules have the characteristics of multiple biomass populations within them (i.e. heterotrophs and autotrophs), and are more easily retained in biological treatment systems as a result of their larger settling rates/size.
Case studies of both types of the systems at Ejby Mølle WWTP (Odense, Denmark) and Central Regional Wastewater System WWTP CRWS, Trinity River Authority, Texas, will be highlighted.
While continuous feed AGS systems can be freely designed and installed by utilities, SBR AGS systems are currently patented by DHV and sold in North America exclusively by Aqua Aerobics.
This presents challenges to the North American market for two reasons:
It is important for the responsible process engineer to have independent confirmation of performance for professional liability concerns. This presentation will discuss design experience with the Morecombe WwTW in the United Kingdom, and how it approached working with DHV and confirming their process design for this facility.
|1:00pm - 5:00pm||Precon Workshop 4: Demystifying Water Quality Based Permitting, (Or How to Have Fun During Your Next Permit Renewal)|
Session Chair: Stephen James, JUB Engineers;
|Boise Centre West 110B|
Demystifying Water Quality Based Permitting, (Or How to Have Fun During Your Next Permit Renewal)
1JUB Engineers, United States of America; 2Lake Stevens Sewer District; 3Washington Department of Ecology; 4Oregon Department of Environmental Quality; 5US Environmental Protection Agency; 6Idaho Department of Environmental Quality; 7HDR, inc.; , , , , , ,
Most treatment plants do a good job of meeting the secondary treatment standards (AKA technology-based limits). But what about nutrients and toxics?
The regulatory agencies use a well-documented process to determine what new permit limits needed and what those new limits are. Do you know how they do this so you can be prepared when it is time to renegotiate your permits?
This is an interactive workshop with senior permitting staff from Idaho, Oregon, Washington, EPA, and consulting engineering that will provide a solid base for understanding permits and the information you need to be prepared.
Key learning objectives are:
The workshop will include a panel discussion of upcoming significant permitting issues in each State followed by a question and answer session.
1:00 - 1:10 Introduction – Stephen James (JUB) /Caitlin Hubbard (Lake Stevens Sewer District)
1:10 - 1:30 POTW permitting intro (lightning round) – Karen Burgess (US EPA)
1:30 - 2:00 Overview of how WQBELs are developed – Tom Dupuis (HDR Engineering)
2:00 - 2:30 Example problem – Ellie Key (WA ECY)
Simple steady state dilution model– hand calculation with a partner (includes documents showing calculations, etc.) evaluating a toxic constituent and reasonable potential analysis. This will provide a hands on overview of how permit limits are developed.
2:30 - 3:00 Coordination/Partnering with regulators –Jon Gasic (Oregon DEQ)
This session summarizes the process of what is helpful to work with regulators and permittees including:
3:00 - 3:15 Break
3:15 - 3:40 What would YOU do? – Round Table Discussion, Mary Anne Nelson (IDEQ) moderating: This hands on exercise presents an example (priority) pollutant and walks the group through permit development. This will be an interactive group activity and will include key elements that need to be considered with each permitted constituent
3:40 - 3:55 Upcoming significant issue topic 1 - Panel, all DEQ, ECY and EPA speakers
This includes each regulator talking about where people are having trouble meeting permits, what changes they see coming, what they are concerned about. This session will focus on both single constituents and new multiconstituent methods such as the biotic ligand model.
3:55 - 4:15 Stump Your Regulator – “What If” Scenarios or “What would you do” Scenario - Panel, all DEQ, ECY and EPA speakers
Participants will be asked about items they would like to know more about at the beginning of the presentation. Panelists will address each of the issues raised.
4:15 - 4:35 Upcoming Significant Issue topic 2 - Panel, all DEQ, ECY and EPA speakers
An opportunity to have people ask about tough issues to see what other states are doing about them (blending, temperature, PCB, others)
4:35 - 4:55 “What would you do” group discussion including previous Panel
4:55 - 5:00 Thank you and Closing
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