Julian Sandino

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David Seamon

Kansas State University

Amir Manbachi

Johns Hopkins University

Aida Khairuddin

Universiti Teknologi Malaysia - UTM

Mohammad Mehrmohammadi

Wayne State University

Heghnar Zeitlian Watenpaugh

University of California, Davis

Mekonnen Maschal

Ethiopian Civil Service University (ECSU)

Mabel Morana

Washington University in St. Louis

Virginie Prevost

Université libre de Bruxelles

Gerasimos Tsourapas

University of Glasgow

Ute Krämer

Ruhr University Bochum Germany

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Papers by Julian Sandino

Applicability of Ultrasound Pre-Conditioning of WAS to Reduce Foaming Potential in Mesophilic Digesters

Proceedings of the Water Environment Federation, 2005

Many anaerobic digestion facilities processing waste activated solids (WAS) or combined primary a... more

A Proposed Approach for Modeling Sludge Reduction Technologies

Proceedings of the Water Environment Federation, 2010

Abstract: Sludge reduction technologies have gained popularity as solids handling and disposal be... more

Maximizing Wet Weather Treatment Capacity of Nutrient Removal Facilities

by Julian Sandino and Dimitri Katehis

Proceedings of the Water Environment Federation, 2011

ABSTRACT Through the utilization of a wet weather toolkit approach, the upgrade of nutrient remov... more ABSTRACT Through the utilization of a wet weather toolkit approach, the upgrade of nutrient removal facilities to maximize wet weather flow treatment has been achieved. Understanding key characteristics of wet weather flows, such as pollutant load, solids composition, salinity, and temperature is a key consideration. Coupled with a process optimization approach that analyzes each unit process&#39; operation under peak flow conditions and defines an optimal wet weather operating mode for each unit process, a viable wet weather flow management plan can be developed. Review of a series of case studies shows that state of the art technologies such as computational fluid dynamic analysis of primary and secondary clarifiers, automated wet weather inventory management, and biologically active ballasted sedimentation processes were crucial in attaining the competing goals of stable nutrient removal performance and increased wet weather flow capacity. Implementation of this approach has allowed facilities ranging from 15 to 330 mgd to treat significantly higher wet weather flows at significant discounts versus conventional treatment approaches, with savings ranging from greater than 10M to over 100M for larger facilities.

LABORATORY STUDIES ON A SEQUENCING-BATCH TEMPERATURE-PHASED ANAEROBIC DIGESTION (TPAD) SYSTEM

Proceedings of the Water Environment Federation, 2003

ABSTRACT

BEYOND CONVENTIONAL DIGESTION? An Industry Dilemma

Proceedings of the Water Environment Federation, 2000

ABSTRACT

Underlying Mechanistic Principles and Proposed Modeling Approach for Waste Activated Sludge Reduction Technologies

Proceedings of the Water Environment Federation, 2009

WERF&#x27;s 05-CTS-3 Evaluation of Processes to Reduce Activated Solids Generation and Dispos... more

Underlying Mechanistic Principles, Performance Evaluation and Proposed Modeling Approach for Selected Waste Activated Sludge Reduction Technologies

Proceedings of the Water Environment Federation, 2009

ABSTRACT WERF's 05-CTS-3 Evaluation of Processes to Reduce Activated Solids Generation and D... more

Evaulation Methodology Framework for Processes to Reduce Waste Activated Solids

Proceedings of the Water Environment Federation, 2010

... Drury Whitlock*, Julian Sandino*, John Novak**, Bruce Johnson*, Lauren Fillmore*** *CH2M HILL... more

Current State of the Practice of Sludge Reduction Technologies

Proceedings of the Water Environment Federation, 2008

... Removal or build-up of inert debris in the system was also not discussed (Rouse et al. 2006;R... more

POINT-OF-SALE REUSE WASTEWATER TREATMENT FACILITIES – A NEW WATER RESOURCE

Proceedings of the Water Environment Federation, 2003

ABSTRACT

Energy Efficiency in Wastewater Treatment in North America: A WERF Compendium of Best Practices and Case Studies of Novel Approaches

by Julian Sandino, Lauren Fillmore, and D. Kinnear

After manpower, energy is the highest operating cost item for most water and wastewater companies... more After manpower, energy is the highest operating cost item for most water and wastewater companies. Over the last decade, energy consumption by the sector has considerably increased as a result of implementation of new technologies to meet new effluent and potable water quality standards. High energy consumption will affect the water industry worldwide and is inextricably linked to the issue of Climate Change. Through its Optimization Challenge program, the Water Environment Research Foundation (WERF) participated in the Global Water Research Coalition's (GWRC) project titled Energy Efficiency in the Water Industry: A Compendium of Best Practices and Case Studies. For this project, WERF served the role of North America practice coordinator, developing a Compendium of best practices in the energy efficient design and operation of water industry assets for this region of the world.

Leveraging Technology to Provide an Implementable and Sustainable Wet Weather Flow Management Solution for the Wilson Creek RWWTP: A Case Study in the Application of the 2005 Draft Policy on Peak Flow Diversions and the Resulting Regulatory Interactions

Proceedings of the Water Environment Federation, 2010

From Best Practices to the Plant of the Future: The WERF Optimization Program

by Julian Sandino and Dimitri Katehis

Proceedings of the Water Environment Federation, 2010

ABSTRACT The Water Environment Research Foundation (WERF) Optimization Program includes both dire... more ABSTRACT The Water Environment Research Foundation (WERF) Optimization Program includes both direct and collaborative research with the intention of optimizing both the liquid treatment and solids operations at Wastewater Treatment Plants (WWTPs). This paper will report WERF research that has been completed in three areas: Wastewater Treatment Plant (WWTP) benchmarking and best practices in Europe; WWTP benchmarking and best practices in North America; and a visioning of the WWTP of the Future. That visioning will include an overview of the WERF report on a visioning workshop attended by international experts.

EVALUATION OF UASB EFFLUENT POLISHING ALTERNATIVES FOR MUNICIPAL APPLICATIONS

Proceedings of the Water Environment Federation, 2000

ABSTRACT

First of Its Kind Full-Scale Implementation of a Biological and Chemically Enhanced High-Rate Clarification Solution for the Treatment of Wet Weather Flows at a Municipal Wastewater Treatment Facility

Proceedings of the Water Environment Federation, 2011

ABSTRACT North Texas Municipal Water District (NTMWD) serves 1.7 million customers by operating o... more ABSTRACT North Texas Municipal Water District (NTMWD) serves 1.7 million customers by operating one water treatment plant and four regional wastewater treatment plants including the Wilson Creek Regional Wastewater Treatment Plant (RWWTP). This facility discharges into Lake Lavon, which also serves as the District&#39;s water supply. With continued growth of the service area and the increased challenge of wet weather flow management, NTMWD evaluated several alternatives and selected to upgrade and expand the Wilson Creek RWWTP. One key characteristic of the adopted alternative is the incorporation of dual-purpose components to provide both advanced treatment of dry weather flows using a high-rate clarification process (Actiflo™), as well as biological treatment of all wet weather flows by converting the high-rate system into a biologically and chemically enhanced mode (BioActiflo™).

SELECTED EXPERIENCES IN THE APPLICATION OF UASB TECHNOLOGY FOR LARGE-SCALE MUNICIPAL ADVANCED WASTEWATER TREATMENT APPLICATIONS

by Julian Sandino and Frank Rogalla

Proceedings of the Water Environment Federation, 2004

As many countries embark in the costly task of implementing or upgrading wastewater treatment, th... more

EVALUATION OF A SEQUENTIAL FEEDING SCHEME FOR TEMPERATURE-PHASED ANAEROBIC DIGESTION (TPAD) SYSTEM TREATING MUNICIPAL SLUDGE

Proceedings of the Water Environment Federation, 2002

ABSTRACT

SUSTAINABLE ENERGY MANAGEMENT: AUGMENTING ANAEROBIC DIGESTERS TO INCREASE BIOGAS-FUELED COMBINED HEAT AND POWER PRODUCTION

by Julian Sandino and Dimitri Katehis

Proceedings of the Water Environment Federation, 2008

This paper focuses on technologies that augment anaerobic digestion to increase biogas fueled com... more

Evaluation of a Sludge Homogenization Pre-Conditioning Process for Increased Biogas Cogeneration Potential and Reduced Sludge Yields from Anaerobic Digestion

Proceedings of the Water Environment Federation, 2010

ABSTRACT

ANAEROBIC SEWAGE TREATMENT TECHNOLOGY IN LATIN-AMERICA: A SELECTION OF 20 YEARS OF EXPERIENCES

Proceedings of the Water Environment Federation, 2007

From the early introduction of Anaerobic Sewage Treatment, AST, technology to Latin-America 20 ye... more From the early introduction of Anaerobic Sewage Treatment, AST, technology to Latin-America 20 years ago to now, the technology has become a viable alternative to provide affordable sanitation to the region. The engineering community has learned to identify and manage the main risks factors of the technology, namely: odor emissions, material corrosion, scum removal and low treatment performance as compared to aerobic biological processes (70 -75% BOD and TSS removal). AST is used as an advanced primary treatment system, with low temperature anaerobic digestion and thickening in one compact, operationally simple and energy efficient unit. The technology can be considered mature in countries like Brazil where major cities such as Campinas, Curitiba and Belo Horizonte have built large plants, up to 80 mgd in capacity, based on the combination of UASB reactors and a polishing step. Diverse polishing steps have been researched, piloted and implemented successfully in the field. Examples of large scale plants operating with Stabilization Ponds (Bucaramanga), Trickling Filters (Caçadores and Londrina Barao Geraldo) to Activated Sludge (Piçarrão), Dissolved Air Flotation (Anhumas) and Biological Aerated Filters (Boa Vista) are presented.. Most of the existing experience is with warm sewage, with temperatures of 20C or above using upflow anaerobic sludge blanket, UASB, type reactors. The technology has also been applied to colder influent sewage with temperatures as low as 15C. in smaller scales of up to 1 MGD obtaining 70% BOD removal and using anaerobic baffled reactors. Additionally, new concepts and developments such as the HRAP are being implemented and tested at full-scale in mid-size municipalities of Colombia

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Applicability of Ultrasound Pre-Conditioning of WAS to Reduce Foaming Potential in Mesophilic Digesters

Proceedings of the Water Environment Federation, 2005

Many anaerobic digestion facilities processing waste activated solids (WAS) or combined primary a... more

A Proposed Approach for Modeling Sludge Reduction Technologies

Proceedings of the Water Environment Federation, 2010

Abstract: Sludge reduction technologies have gained popularity as solids handling and disposal be... more

Maximizing Wet Weather Treatment Capacity of Nutrient Removal Facilities

by Julian Sandino and Dimitri Katehis

Proceedings of the Water Environment Federation, 2011

LABORATORY STUDIES ON A SEQUENCING-BATCH TEMPERATURE-PHASED ANAEROBIC DIGESTION (TPAD) SYSTEM

Proceedings of the Water Environment Federation, 2003

ABSTRACT

BEYOND CONVENTIONAL DIGESTION? An Industry Dilemma

Proceedings of the Water Environment Federation, 2000

ABSTRACT

Underlying Mechanistic Principles and Proposed Modeling Approach for Waste Activated Sludge Reduction Technologies

Proceedings of the Water Environment Federation, 2009

WERF&#x27;s 05-CTS-3 Evaluation of Processes to Reduce Activated Solids Generation and Dispos... more

Underlying Mechanistic Principles, Performance Evaluation and Proposed Modeling Approach for Selected Waste Activated Sludge Reduction Technologies

Proceedings of the Water Environment Federation, 2009

ABSTRACT WERF's 05-CTS-3 Evaluation of Processes to Reduce Activated Solids Generation and D... more

Evaulation Methodology Framework for Processes to Reduce Waste Activated Solids

Proceedings of the Water Environment Federation, 2010

... Drury Whitlock*, Julian Sandino*, John Novak**, Bruce Johnson*, Lauren Fillmore*** *CH2M HILL... more

Current State of the Practice of Sludge Reduction Technologies

Proceedings of the Water Environment Federation, 2008

... Removal or build-up of inert debris in the system was also not discussed (Rouse et al. 2006;R... more

POINT-OF-SALE REUSE WASTEWATER TREATMENT FACILITIES – A NEW WATER RESOURCE

Proceedings of the Water Environment Federation, 2003

ABSTRACT

Energy Efficiency in Wastewater Treatment in North America: A WERF Compendium of Best Practices and Case Studies of Novel Approaches

by Julian Sandino, Lauren Fillmore, and D. Kinnear

Proceedings of the Water Environment Federation, 2010

From Best Practices to the Plant of the Future: The WERF Optimization Program

by Julian Sandino and Dimitri Katehis

Proceedings of the Water Environment Federation, 2010

EVALUATION OF UASB EFFLUENT POLISHING ALTERNATIVES FOR MUNICIPAL APPLICATIONS

Proceedings of the Water Environment Federation, 2000

ABSTRACT

Proceedings of the Water Environment Federation, 2011

SELECTED EXPERIENCES IN THE APPLICATION OF UASB TECHNOLOGY FOR LARGE-SCALE MUNICIPAL ADVANCED WASTEWATER TREATMENT APPLICATIONS

by Julian Sandino and Frank Rogalla

Proceedings of the Water Environment Federation, 2004

As many countries embark in the costly task of implementing or upgrading wastewater treatment, th... more

EVALUATION OF A SEQUENTIAL FEEDING SCHEME FOR TEMPERATURE-PHASED ANAEROBIC DIGESTION (TPAD) SYSTEM TREATING MUNICIPAL SLUDGE

Proceedings of the Water Environment Federation, 2002

ABSTRACT

SUSTAINABLE ENERGY MANAGEMENT: AUGMENTING ANAEROBIC DIGESTERS TO INCREASE BIOGAS-FUELED COMBINED HEAT AND POWER PRODUCTION

by Julian Sandino and Dimitri Katehis

Proceedings of the Water Environment Federation, 2008

This paper focuses on technologies that augment anaerobic digestion to increase biogas fueled com... more

Evaluation of a Sludge Homogenization Pre-Conditioning Process for Increased Biogas Cogeneration Potential and Reduced Sludge Yields from Anaerobic Digestion

Proceedings of the Water Environment Federation, 2010

ABSTRACT

ANAEROBIC SEWAGE TREATMENT TECHNOLOGY IN LATIN-AMERICA: A SELECTION OF 20 YEARS OF EXPERIENCES

Proceedings of the Water Environment Federation, 2007

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