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May 2013 

NBP News 

 

27th Annual Residuals and Biosolids Conference Highlights Emerging Opportunities for Sustainable Resource Recovery 

The WEF Residuals and Biosolids conference was held in Nashville, TN May 5-8, 2013.  The event was hosted in collaboration with the Kentucky-Tennessee Water Environment Association.  An outstanding line-up of speakers presented on the topic areas of Beneficial Use; Bioenergy from Residuals; Biosolids Land Application, Land Reclamation, and Nutrient Management; Collaboration to Advance Energy Sustainability Initiatives; Conditioning and Dewatering Technologies; Facilities Operation, Management, and Planning; Legislative, Regulatory, and Legal Issues; Odor and Pathogen Control; Public Support; Research and Development Activities; Stabilization Technologies; Success Stories and Lessons Learned;  and Thermal Processes.  The following full text manuscripts are available for purchase by contacting WEF customer service at 1-800-666-0206 or 1-571-830-1545, or by email at csc@wef.org.     

Manuscript Summaries:

Beneficial Use

An Update to the City and County of Honolulu Biosolids Management Plan - A Focus on Energy and Solids Minimization 

Terry Goss, Mohammad Abu-Orf, Jeremy Koch, and Jordan Fahmie (AECOM Water)  

This paper highlights the City and County of Honolulu, HI efforts to reduce or eliminate the practice of direct sludge disposal (landfilling) and increase beneficial use of biosolids. 

Over 20 Years of Successful Beneficial Use-Adapting the Management System Approach: Los Angeles Experience 

Diane Gilbert Jones (City of Los Angeles) 

A summary of the City of Los Angeles biosolids land application program, which beneficially reuses 100% of all biosolids produced at two of its wastewater treatment facilities. 

Sustainable Solution to the Disposal Epidemic: Beneficial Use of Water Treatment Residual in Manufactured Topsoil 

Jennifer Callahan and Trudy Johnston (Material Matters, Inc.)  

Many water treatment plants (WTPs) do not beneficially use their water treatment residuals (WTRs). WTRs are surface and groundwater sediments comprised primarily of clay, sand, silt, and humic substances. These sediments are filtered from drinking water during the water purification process. Many WTRs end up in landfills or disposal cells; however, these valuable residual products can be beneficially used not only via agricultural land application, but also as a bulking agent for compost and a sandy additive for manufactured topsoil. WTRs are the ultimate common-sense approach to recycling. Nutrients and sediments recovered at the WTPs are cleaned and processed, and can be returned to enhance soil structure and fertility. 

Why the Fertilizer Industry Could Use a Little Biosolids 

John F. Donovan (CDM Smith Inc.); Jeffrey C. Burnham (VitAg Corporation)  

Approximately ten years ago, testing was performed at a traditional ammonium sulfate fertilizer plant by substituting dewatered wastewater biosolids for the water that was used to control reaction temperatures. The result was a high nitrogen product, which exhibited slow-release properties when used on citrus, field and turf crops. Over 115,000 metric tons were manufactured and successfully used from this facility. Over the last several years, VitAg Corporation has refined the manufacturing process and expects to commence construction in 2013 of the first purposefully designed organically-modified ammonium sulfate fertilizer manufacturing facility.   

Bioenergy from Residuals 

Clean Combustion of Sludge Derived Fuel: Part 1 of 2 - Concept to Pilot 

Roger Tim Haug (Loyola Marymount University); F. Michael Lewis (Consultant)  

This paper summarizes the pilot-scale tests of the combustion process from initial concept through the pilot plant studies that formed the basis for design criteria for the City of Los Angeles. 

Clean Combustion of Sludge Derived Fuel: Pilot to Practice  

F. Michael Lewis (Consultant); Roger Tim Haug (Loyola Marymount University); Lee A. Lundberg (Veolia Water North America)  

This paper describes the team effort required to successfully meld going from laboratory to full scale within the framework of municipal procurement practices, while simultaneously working within the “low bid” and “or equal” procurement regulations.  This paper also includes many of the pertinent design details that helped make this project an outstanding technical success. 

Co-Thickening and Cogeneration in the Electric City 

Vincent L. Apa III (CDM Smith, Inc.)  

This paper focuses on sludge thickening improvements, anaerobic digester upgrades, biogas conditioning and a reciprocating engine installed at the City of Schenectady Water Pollution Control Plant (WPCP).  

Development, Implementation, and Demonstration of the Co_digestion of Source-Separated Food Waste by the City of Tacoma 

Christopher Muller, John Burk, David McBride, and Donald Stallman (Brown and Caldwell); James Parvey and Lewis Griffith (City of Tacoma, WA)  

This paper summarizes the City of Tacoma assessment of co-digestion.  A growing number of wastewater utilities are turning to co-digestion as a means both to manage an organics waste stream in their service area and to increase energy production and revenues. 

Maximizing Opportunities for Beneficial Use of Biogas for Pima County, Arizona  

Jing Luo and Jackson Jenkins (Pima County Regional Wastewater Reclamation Department); Gary Newman and Eron Jacobson (Brown and Caldwell, Inc.); Michael Gritzuk (Consultant); Jerry Bish and Fernando Sarmiento (Greeley and Hansen, LLC)   

This paper describes the process and evaluation to maximize the value and beneficial use of the biogas produced at the Ina Road Water Reclamation Facility (WRF), in Pima County, AZ. 

Pilot Study of Siloxanes Removal from Digester Biogas through Various Adsorbents 

Y. Tsai and S. Mehta (Infilco Degremont Inc); J. Raich-Montiu (CETaqua); C. B. Bott and W. J. Balzer (Hampton Roads Sanitation District); P. A. Burrowes (CH2M Hill)  

This study evaluates some innovative siloxane adsorbent materials and compares their siloxane removal capacity with regular granular activated carbon (GAC). 

Positive Business Cases for Codigestion and Resource Recovery Facilities in Australia without Pre-Existing Anaerobic Digesters 

John Kabouris, Tim Shea, and Kate Simmonds (CH2M HILL)  

This paper summarizes the investigation into the feasibility of renewable energy generation through anaerobic digestion of waste at up to four separate sites. 

Restaurant Trap Waste Characterization and Full Scale FOG Co-Digestion At the San Francisco Oceanside Plant 

Alexandre Miot, Bonnie M. Jones, Karri Ving, and Irina Lukicheva (San Francisco Public Utilities Commission); Morayo Noibi (Carollo Engineers) 

This paper presents findings from a full-scale co-digestion at the Oceanside Wastewater Treatment Plant in San Francisco, CA. During this study, best practices for GTW sampling and GTW characterization were identified and hundreds of samples were analyzed. 

Sometimes Average isn’t Good Enough: Understanding the Impact of Variability on Energy Recovery from Digester Gas 

Hunter Long and Michael Bullard (Hazen and Sawyer); Chris Shamel and Frank Crump (City / County Utilities Commission (CCUC), Winston Salem, NC)  

This paper highlights results from an evaluation of digester gas utilization options at the Muddy Creek Wastewater Treatment Plant (MCWWTP), Winston-Salem, NC. 

The Tale of Two Digesters: Hydraulic Versus Compressed Biogas Mixing 

Richard von Langen (RvL Associates, Inc.); Richard Althouse (Fairfield Suisun Sanitary District, CA); Glenn Dorsch (Vaughan Company); Brad Rockwell (Rockwell Engineering & Equipment) 

This paper focuses on comparing two types of mixing, slurry recirculation and biogas recirculation as measured by volatile solids reduction, energy production, and energy efficiency measured as the amount of energy produced per unit of energy input. 

What Can Solids Do for You? – Shifting towards Solids as an Energy Resource 

Eric Auerbach (Malcolm Pirnie the Water Division of Arcadis); Thomas E. Kunetz (Metropolitan Water Reclamation District of Greater Chicago); Rob Van Evra (City of Columbus Division of Sewerage and Drainage); James Keller (Buffalo Sewer Authority) 

This paper examines the process by which utilities shift their thinking towards maximizing the energy resources contained in their sludge. 

Biosolids Land Application, Land Reclamation, and Nutrient Management 

Case Study:  Nutrient Trading Options for Satisfying NPDES CAP Load in the Chesapeake Bay Watershed 

Aaron. B. Stephens and Jennifer Callahan (Material Matters, Inc.) 

This paper evaluates three case studies that are participating in the Pennsylvania Nutrient Trading Program (PANTP) to meet NPDES compliance. 

Case Study: Land Reclamation and Biosolids: A Perfect Match 

Trudy Johnston and Jennifer Callahan (Material Matters, Inc)  

This case study describes how beneficial use of biosolids for mine reclamation supports nutrient recycling programs that linked a city with a wildlife agency and a rural community. 

Fate and Removal of Steroidal Hormones during Advanced Municipal Biosolids Treatment Processes  

Hanna Hamid and Cigdem Eskicioglu (School of Engineering, University of British Columbia (UBC), BC, Canada)  

This research evaluates the fate of 16 steroidal (estrogenic, androgenic and progestogenic) hormones during advanced anaerobic digestion of municipal sludge cake produced at the Kelowna’s wastewater treatment plant using microwave (MW) pretreatment. 

Long-Term Monitoring Results for the METROGROFarm Near Deer Trail, Colorado 

James Johnson and Arlisa Michael (Metro Wastewater Reclamation District)  

This paper summarizes the results of studies regarding the land application of biosolids on the METROGRO farm, near Deer Trail, CO. The Metro Wastewater Reclamation District contracted with the United States Geological Service to conduct monitoring at the METROGRO farm. Studies of dust conducted over a two year period and studies of crops conducted over a ten year period indicated no detrimental effects from the land application of biosolids. 

Phosphorous Release and SCVFA production from non-BNR co-thickened sludge using short term fermentation 

Francesco Zurzolo and Jan A. Oleszkiewicz (University of Manitoba)  

Phosphorous (P) recovery from wastewater sludge is being researched for the potential to recover P, a valuable resource, in a reusable form. 

Too Much Nitrogen?  

Dale Gabel, Jim Jordahl, Heidi Bauer, and Kerry Meyer (CH2M HILL); Dave Meyer, Tim Woodard, and Kent Brugler (City of Westminster); Thomas Borch (Colorado State University) 

This paper summarizes the City of Westminster, Colorado objectives of the Biosolids Management Master Plan Update Study identification and development costs for operational and capital improvements necessary for long-term, sustainable solids disposal. A key element of the Update was the detailed agronomic review of the SNRF and the City’s farming practices to gain a better understanding of the SNRF’s true capacity for biosolids application. 

Collaboration to Advance Energy Sustainability Initiatives 

A National Survey of Biogas Use at Wastewater Treatment Plants in the United States: The Results  

Yinan Qi (Black and Veatch Corporation); Ned Beecher (North East Biosolids and Residuals Association); Lori Stone (LA Stone LLC)  

Summary of results with regard to the National Survey of Biogas Use 

Nineteen Agencies Team to Convert Biosolids to Energy for Regional Solution 

Robert Gillette and Todd Jordan (Carollo Engineers, Inc.); Caroline Quinn (Delta Diablo Sanitation District); EJ Shalaby (West County Wastewater District) 

In order to simultaneously address limited biosolids disposal options and the need for renewable energy, nineteen members of the San Francisco Bay Area Clean Water Agencies, commonly referred to as BACWA, joined together to pursue development of a regional or sub-regional biosolids-to-energy (B2E) facility that, as its name implies, converts biosolids to energy.  

Road to Energy Neutrality – WERF is Paving the Way with a Focus on Biosolids Energy 

Ralph Eschborn (AECOM); Paul Kohl (City of Philadelphia Water Department); Steve Tarallo (Black & Veatch); Lauren Fillmore (Water Environment Research Foundation)  

Summary of WERF initiative to understand, map and communicate the emerging and available approaches that each utility can take to drive toward energy neutrality. 

Conditioning and Dewatering Technologies 

Decision Factors on Solids Dewatering Technologies for DC Water’s Biosolids Program  

Perry Schafer, Sam Robert, and Phil Braswell (Brown and Caldwell); Salil Kharkar, Sudhir Murthy, Chris Peot, and Diala Dandach (DC Water)  

An overview of the DC Water and Sewer Authority (DC Water) decision-making process regarding the implementation of its $470 million biosolids program, which involves large-scale thermal hydrolysis of wastewater solids  followed by anaerobic digestion to produce a high-quality Class A biosolids product. 

Evaluation of Electrodewatering for Enhanced Biosolids Dewatering 

K.J. Brenner and A.B. Stephens (Material Matters, Inc.); D. Minnich (Nazareth Borough Municipal Authority)  

 A summary of the Nazareth Borough Municipal Authority (NBMA) study aimed at improving upon existing dewatering equipment in order to increase on-site storage capacity, decrease odor potential, and decrease their biosolids  cake hauling costs of.  NBMA piloted a Linear Electro-Dewatering Technology (LED) unit to determine if it met the needs of the treatment facility at a reasonable annual operating cost.  

  High Solids Loading for a DAFT Retrofit for Co-Thickening Operation 

Richard Kelly, David Newman, John Bratby (Brown and Caldwell); Michael Patrick (City of Tacoma, WA) 

This paper presents results from upgrades to the City of Tacoma’s dissolved air flotation thickeners (DAFTs) to allow co-thickening of primary and secondary sludges. 

Facilities Operation, Management, and Planning 

Benefits and Costs of Co-Digestion for a Large Utility 

J.F. Donovan and D.L. Parry (CDM Smith); D.K. O’Brien (Massachusetts Water Resource Authority)  

A summary of the exploration of benefits and costs of co-digestion of wastewater sludge and other organic wastes at Deer Island. 

Biosolids Processing and Distribution: Challenges Continue  

Robert Bates (Louisville Metropolitan Sewer District)  

This paper highlights challenges that Louisville MSD faced during the last 3 to 5 years in distribution of biosolids products. 

Economic Methods Matter – Appropriate Analysis Can Overcome the Biggest Barrier to Biogas Use 

John Willis, Karen Durden, and Marck Walch (Brown and Caldwell); Mike Ellenbaas (Black & Veatch); Lori Stone (LA Stone LLC); Lauren Fillmore (Water Environment Research Foundation) 

 Study exploring how economic evaluation methodologies affected “go/no-go” decisions for a biogas project.  

Making the Case for Sustainable Biosolids Management Solutions:  A Roadmap for Fourteen Facilities 

Matthew Berg (CH2M Hill)  

North Texas Municipal Water District (NTMWD) is developing a Biosolids Master Plan to evaluate potential sustainable biosolids management improvements. This paper describes that evaluation, the planning process utilized, and results. The methodology for evaluation includes multi-attribute utility analysis including both financial and non-financial criteria. 

To Haul or Not to Haul? Capacity and Class A Biosolids Processing Expansion at the Haifa, Israel Wastewater Treatment Plant 

Matthew P. Van Horne and C. Michael Bullard (Hazen and Sawyer)  

 Summary of proposed suite of improvements for the Haifa WWTP. 

 Legislative, Regulatory, and Legal Issues 

Biosolids 2013: Odors, Nuisance and Current Challenges to Beneficial Use 

James B. Slaughter (Beveridge & Diamond, P.C.)  

 This paper surveys current legal issues affecting biosolids management options for clean water agencies, land appliers, biosolids marketers, and farmers. 

 Historical Review of United States (US) Guidance and Regulations For Sludge Disinfection and Stabilization including a Future Projection 

James E. Smith, Jr. (Consultant)  

This paper discusses the evolution of the current US sewage sludge disinfection and vector attraction reduction regulations including their bases, associated practices and the limitations of those practices. It further discusses the  criteria employed in demonstrating equivalency of a process to a Process to Significantly Reduce Pathogens (PSRP) or a Process to Further Reduce Pathogens (PFRP). 

Odor and Pathogen Control 

Novel BioElectro™ Process for Biosolids Sterilization 

Eham Safaei Takhtehfouladi and Maria Elektrowicz (Concordia University); Robert S. Reimers (Department of Environmental Health Sciences, Tulane University, School of Public Health and Tropical Medicine); Jan A. Oleszkiewicz (Department of Civil Engineering, University of Manitoba, Winnipeg, Manitoba, Canada)  

This paper describes a new process of biosolids treatment, BioElectro ™, which is able to sterilize biosolids in less than two hours. 

Sanitary Assurance at Biosolids Composting Facilities: Development of a Temperature Contact Time Test Protocol  

Pulat Isobaev, Daryl McCartney, and Kristine Wichuk (Civil and Environmental Engineering, University of Alberta, Canada); Norman Neumann (School of Public Health, University of Alberta, Canada) 

A summary of research with a long-term goal of developing a method of compost sanitation assurance based on particle-level monitoring, which can effectively be used in a variety of composting technologies. 

Treatment of Odor by a Seashell Biofilter at Lake Wildwood WWTP  

Samantha M. Abraham and Irwin H. Suffet (University of California, Los Angeles); Scott Joslyn (Nevada County Sanitation District)  

 This study is an initial examination into the mechanism of the removal of odorous compounds in a seashell biofilter. 

Public Support 

Improving Public Communication and Outreach at the METROGRO Farm 

Kelley Merritt, Bryan Mitchell, and Alicia Gilley (Metro Wastewater Reclamation District)  

A summary of Metro District's proactive public participation and communication program to communicate about District actions and involve interested parties in its biosolids management activities. 

New Biosolids Technologies and Processes for Developing Countries  

Richard D. Kuchenrither (University of Colorado Boulder); Lori Stone (LA Stone LLC); Roger Tim Haug (Loyola Marymount University); Lauren Fillmore and Amit Pramanik (Water Environment Research Foundation) 

The Bill & Melinda Gates Foundation engaged the Water Environment Research Foundation (WERF) to evaluate the universe of technologies, both established and novel, to identify those technologies which can, either standing  alone or coupled into a system, meet the objectives of the Omni-Processor vision.  Through a creative brainstorming process, experts with extensive professional experience developed a comprehensive list of technologies and  processes that meet the goals of the Foundation’s Omni-Processor vision.  The team evaluated these technologies across a set of criteria which reflect the Omni-Processor vision.  The outcome of the brainstorming and evaluation  was reviewed and augmented by five expert advisors to vet the soundness of the evaluation, the resulting recommendation of technologies and processes, and the list of key players for further implementation. 

Research and Development Activities 

"Second Generation" ATAD Success Stories - "Show Me the Data" Several Years of Performance Data from Two Case Studies of Conversion from "First Generation" to "Second generation" ATAD Systems  

David W. Oerke (CH2M Hill)  

This manuscript will explore the advantages of the “second generation” ATAD systems over the original installations, the reasons why the two plants converted their systems to the newer ATAD systems, and compare the actual  performance of the Edwards, Neenah and other WWTPs with regard to total and volatile solids reduction, average reactor solids retention time (SRT) and temperature, centrate/filtrate ammonia concentration, dewatered cake solids  concentration and fecal coliform concentration in dewatered cake. 

An Approach to Dewatering Optimization Using UV/Visible Spectroscopy by Monitoring Polymer Concentration in Centrate  

Banu Ormeci and Fares Almomani (Department of Civil and Environmental Engineering, Carleton University, Ottawa ON, Canada); Peter Gallant (ENDETEC / Veolia Water Solutions & Technologies); Richard DiMassimo and Jeffery Privott (Kruger Inc.)   

This study presents a method for in-line and real-time measurement of polymer concentration in water and centrate samples that is based on UV-vis spectrophotometry. 

Investigation of the Impacts of Thermal Activated Sludge Pretreatment and Development of a Pretreatment Model  

Gillian Burger and Dr. Wayne Parker (University of Waterloo)  

This study investigated the impacts of high pressure thermal hydrolysis (HPTH) pretreatment on the distribution of chemical oxygen demand (COD) species in waste activated sludge (WAS). 

Second Law Analysis of Resource Recovery from Wastewater 

David L. Parry (CDM Smith, Inc.)  

Using the second law of thermodynamics, in addition to the first law, in the selection process of an energy system gives greater insight and helps in selecting the most environmentally responsible system.  A water reclamation  plant is particularly well suited to a second law analysis because it deals with both electrical and thermal energy. Biogas produced at the plant can be converted to both of these types of energy. 

Simultaneous Sludge Disintegration and Carbon Source Generation for Enhanced Biological Phosphorous Removal Using Ozonation 

Devendra P. Saroj (Centre for Environmental and Health Engineering, University of Surrey, Surrey, UK); Adriana Inchauste-Daza and Carlos Lopez-Vazquez (Department of Urban Water and Sanitation, UNESCO-IHE Institute for Water Education, Delft, The Netherlands)   

This study investigates the influence of feeding the carbon substrate obtained from the ozonated sludge. 

Stabilization Technologies 

Accelerated Composting Methods and Equipment 

Fred P. Mussari, Robert Finch, and Michael Norris (BCR Environmental Corporation); James E. Smith, Jr, (U.S. EPA (retired)); Darren Midlane (Harvest Quest International)  

Study to determine whether disinfection and stabilization of municipal wastewater biosolids could be accomplished while eliminating digestion entirely at a reduced cost and in a more environmentally responsible manner by the combination of pre-treatment of waste activated sludge or a blend of waste activated sludge with primary sludge or food waste with the CleanB™ system followed by co-composting with green-waste. 

Achieving Biogas Generation and Minimized Sludge Production Using a High-Rate Anaerobic Side-stream Reactor (ASSR) Process - Pilot Study  

Aaron Brennan, Heonseop Eom, Chris Watt, Dong-Hyun Chon, and Chul Park (Dept of Civil and Environmental Engineering, University of Massachusetts Amherst)  

A study aimed at determining the feasibility of sludge reduction in a conventional activated sludge (CAS) process with an anaerobic side-stream reactor (ASSR) through the operation of a pilot scale water resource recovery facility. 

Assessment of Methane Production during Marine Transportation of Wastewater Solids  

Christopher Wilson (Greeley and Hansen)  

Study assessing gasses that are typically produced by wastewater sludge and biosolids in order to bracket the potential conditions that may be present in the headspace of vessel cargo tanks. 

Fate of Nonylphenol Compounds during Aerobic and Anaerobic Digestion of Sludge  

Seçil Ömeroğlu, Hande Bozkurt, F. Dilek Sanin (Department of Environmental Engineering, Middle East Technical University, Turkey)  

A study investigating the results of aerobic and anaerobic digester performance when a toxic and endocrine disrupting substance nonylphenoldiethoxylate (NP2EO) was spiked into the digesters. 

San Francisco Sequencing Batch Reactor Temperature Phased Anaerobic Digestion: Efficient Adaptation to Class A Biosolids 

Drury D. Whitlock, David W. Green, Tim L. Bauer, and Douglas Barber (CH2M Hill); Bonnie M. Jones and Alexandre Miot (San Francisco Public Utilities Commission)  

Concept examination for converting the current wastewater residuals stabilization process from conventional mesophilic digestion to sequencing batch reactor temperature phased anaerobic digestion (SBR TPAD). 

Upgraded Digester Mixing: Achieving Sludge Minimization while Renewing a Key Asset  

Rebecca Schaefer,  Christopher Wilson, and Joseph Gorgan (Greeley and Hansen)  

A series of case studies of digester mixing upgrades from digesters that were poorly mixed or without mixing to completely mixed systems. The evaluation contains a discussion of the many drivers (including foam control, variable operating level, flexible operation, energy optimization, etc.) for the mixing upgrades and the resultant technologies that were considered for each project, ranging from conventional processes such as external circulation to innovative technologies such as linear motion mixers. 

Success Stories and Lessons Learned 

Composting Success at Spotsylvania County 

Todd Williams (CH2M Hill); Doug Crooks (Spotsylvania County, VA)  

A summary of the wastewater residuals management for Spotsylvania County, VA in which the design concept was a breakthough approach with significant cost savings. 

How to Make Improvements When the Cupboard is Bare: Energy Savings Performance Contracting 

Patricia Scanlan, Bob Wimmer, Pete Thomson, and Justin Dickstein (Black & Veatch); Tom Appleman (Upper Occoquan Service Authority); Jesse Moffett (Frederick Winchester Service Authority); Dennis Clough (Energy Systems Group)  

This paper addresses the issues facing utilities in making capital decisions, how to evaluate them as business cases, and the Energy Savings Performance Contract (ESPC) process.  

PCBs in Biosolids: Monitoring In a Large Urban WWTP Using a Newly Developed Practical Extraction Procedure 

Devrim Kaya (Department of Environmental Engineering, Kocaeli University, Kocaeli, Turkey); Filiz Karakaş, F.Dilek Sanin, Ipek Imamoglu (Department of Environmental Engineering, Middle East Technical University, Ankara, Turkey)   

A study highlighting the development of a new, practical PCB extraction procedure, and applying the procedure for monitoring of biosolids originating from a metropolitan WWTP. 

Speedway, Indiana, WWTP Biosolids Upgrade - Storage Nitrification Denitrification Reactor Results in Ammonia Loading Reduction  

Cynthia L. Fort (American Structurepoint, Inc.); Norman C. Berry, Jr. (Town of Speedway)  

This paper summarized the design and construction of a Storage Nitrification Denitrification Reactor (SNDR), in which Ammonia reduction in the biosolids filtrate was evident within the first 30 days of operations. 

Sustainable Biosolids Management in South Florida:  Lessons Learned from the Design, Construction and Operation of a Regional Biosolids Pelletization Facility Fueled by Landfill Gas  

 Amber Barritt (CDM Smith); Raymond H. Schauer (SWA)  

This paper presents lessons learned for other potential utilities interested in regional solutions, sustainable biosolids management options, treatment of multiple types of sludges, and pelletizers fueled by a renewable gas source. 

The SHAFDAN Digestion and Cogeneration Facility  

David L. Parry and Scott Vandenburgh (CDM Smith, Inc.)  

 The SHAFDAN bioenergy facility is part of a land-based biosolids management program that will end the current practice of discharging sludge into the Mediterranean Sea through a long ocean outfall. Class A Biosolids, as defined by the Israel Ministry of Environment, will be produced along with electric power and heat. Recovered heat will be used for solids processing. Other elements of this biosolids program include a new sludge thickening and dewatering facility that has recently been constructed and a new headworks and primary sedimentation facility that has been designed. Class A biosolids will be beneficially used for agricultural applications. 

Thermal Processes 

A Comparison of Conventional Heating and Microwave Irradiation for Enhanced Biogas Production from Municipal Biosolids 

Seyedeh Neda Mehdizadeh, Cigdem Eskicioglu, and Hanna Hamid (School of Engineering, University of British Columbia Okanagan Campus, Kelowna BC, Canada) 

This study evaluates advanced anaerobic digestion incorporating thermal pretreatments (microwave at 2.45 GHz and conventional heating) as an alternative stabilization process for municipal biosolids. 

Meeting the New SSI MACT Regulations - A Case Study  

 Jay Surti and Peter Burrowes (CH2M HILL, Inc.)  

 This paper summarizes a feasibility study completed by the authors for upgrading the existing PNI to meet the new SSI MACT regulations, and the recommended path forward. 

The Duffin Creek Biosolids to Energy Experience – Lessons in Energy Recovery 

 Peter Burrowes, Bob Christopher, and Serge Larocque (CH2M HILL); Brad Dobson and Euan Ferguson ( Regional Municipality of Durham)  

A summary of the Duffin Creek WPCP energy recovery scheme selection.  Duffin Creek WPCP will be the largest thermal processing facility with energy recovery (420 t/d DS installed capacity) in North America. 

Thermal Drying to Achieve Class A Biosolids Can Be A Viable Option For Medium Sized Generators – A Case Study in Bowling Green, Kentucky  

Kristi M. Schnell, Ronald G. Abraham, Kenneth D. Baker (Gresham, Smith and Partners); Scott Neighbors (Bowling Green Municipal Utilities)  

 This paper presents and discusses the proactive and iterative process used to identify-and select a viable, long-term residuals management solution for Bowling Green Municipal Utilities (BGMU). 

 

 

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Conferences 

 

 WEF Residuals and Biosolids 2014: Sustainability Made Simple: Facilitating Resource Recovery  

May 18-21, 2014
Austin Convention Center
Austin, Texas
 
The 28th Annual WEF Residuals and Biosolids Conference will be held on May 18-21, 2014 at the Austin Convention Center. The theme of the conference is “Sustainability Made Simple: Facilitating Resource Recovery.” WEF’s Residuals and Biosolids Committee, in cooperation with the Water Environment Association of Texas, is sponsoring the event. The Call for Abstracts is now open. Deadline for Abstract submissions is August 14, 2013. For more information, click here.
 

 Odors and Air Pollutants 2014  

May 31 – June 3, 2014
Hyatt Regency
Miami, Florida
 
Every two years, this conference brings together environmental professionals from around the world for a showcase on odors and air pollutants management.  For more information, click here. The Call for Abstracts is now open. Deadline for Abstract submissions is August 23, 2013.
 

Training 

 

  Webcast: Process Control for Activated Sludge  

June 27, 2013. 1:00 - 3:00 pm ET
Topics include Review of Activated Sludge Process; Basic Process Calculations; Process Control and Monitoring Requirements; and Troubleshooting. Speaker:Jeanette Brown, Senior Scientist, University of Connecticut Department of Chemical, Materials, and Biomolecular Engineering. This webcast is being offered at no charge, and is available for sponsorship. Please register through GoToMeeting.