Results 1 – 7 of 7 matches James H. Clark
Description: Energy-Positive Operations – City of Los Angeles Hyperion Water Reclamation...
Abstract
The City of Los Angeles’s Hyperion Water Reclamation Plant’s Bio-Energy Facility (HBEF) was commissioned in early 2017 as part of the Digester Gas Utilization Project (DGUP), a design- build-operate contract with the ultimate objective of making full beneficial use of the HWRP’s generated digester gas (biogas); a by-product of the waste water treatment process. Implementation of the project provides a renewable source of energy for the HWRP, amounting up to 27 megawatts (MW) (nominal) of power generation, 32,000 kilograms of steam per hour for the Plant’s solids digestion process, and the capability of providing a self-sufficient power source during events in which power from the Grid is not available. In addition to the renewable energy produced by the HBEF, another objective of the project was to re-use existing infrastructure to the fullest extent possible. This objective not only reduced costs associated with the full-scale demolition of de-commissioned areas within the HWRP, but also provided an ideal opportunity to safely contain, remove and dispose of hazardous materials that had been previously contained on-site for an extended period of time.This paper serves to share the details of the project’s scope, objectives and inherent challenges therein, as answered by the technological & engineering solutions employed by the project team, which led to a successful commissioning and operations of a combined-cycle digester gas cogeneration facility of great magnitude, unique design approach and unique performance requirements. Sharing the DGUP success story serves to benefit other agencies seeking to implement new, or improve upon existing energy recovery technologies within project criterion and constraints translatable to the City’s experiences on this project.
The City of Los Angeles’s Hyperion Water Reclamation Plant’s Bio-Energy Facility (HBEF) was commissioned in early 2017 as part of the Digester Gas Utilization Project (DGUP), a design- build-operate contract with the ultimate objective of making full beneficial use of the HWRP’s generated digester gas (biogas); a by-product of the waste water treatment process. Implementation of...
SourceProceedings of the Water Environment Federation
Subject617 Expectations Exceeded? Promises Met?
Document typeConference Paper
Print publication date Sep, 2018
ISSN1938-6478
SICI1938-6478(20180101)2018:7L.5868;1-
DOI10.2175/193864701784293314
Volume / Issue2018 / 7
Content sourceWEFTEC
First / last page(s)5868 - 5880
Word count275
Description: Book cover
Abstract
This paper discusses operational information on one of the world's largest indirect potable reuse projects, the Groundwater Replenishment (GWRS). This project includes a large treatment facility known as the Advanced Water Purification Facility (AWPF) and went into service in January 2008. During the first two and a half years of operations numerous issues were identified with the initial plant design. These issues served as “lessons learned” and were able to be addressed in the first planned expansion of the existing facility. The solutions to these issues are discussed in detail and can serve as guidance to other utilities considering implementation of a large scale reclamation facility.
This paper discusses operational information on one of the world's largest indirect potable reuse projects, the Groundwater Replenishment (GWRS). This project includes a large treatment facility known as the Advanced Water Purification Facility (AWPF) and went into service in January 2008. During the first two and a half years of operations numerous issues were identified with the initial plant...
SourceProceedings of the Water Environment Federation
SubjectSession 110: Process Optimization for High Quality Reclaimed Products
Document typeConference Paper
Print publication date Jan, 2010
ISSN1938-6478
SICI1938-6478(20100101)2010:8L.8050;1-
DOI10.2175/193864710798208043
Volume / Issue2010 / 8
Content sourceWEFTEC
First / last page(s)8050 - 8063
Word count120
Description: Book cover
Abstract
The recent natural disaster of Hurricane Katrina devastated wastewater utilities in Louisiana, Mississippi, and Alabama. Many treatment systems suffered catastrophic damage. Compounding the problem, some of the affected utilities lost over half of their rate base, undermining their ability to generate sufficient revenue to meet operations and maintenance costs and bond payments. Public health has been placed at risk; without an official assessment of conditions there could be a prolonged period before the utilities receive sufficient funding to prevent financial insolvency and ensure their ability to maintain essential infrastructure and services.Wastewater utilities are among the nation's top protectors of public health. While their committed employees are working to meet immediate needs, some utilities will need long-term financial support from federal and state agencies. In order to address this financial requirement, elected officials needed an official assessment of the wastewater system damage across the Gulf States.Water Environment Federation is a highly respected voice of the industry and an appropriate vehicle for providing this assessment to Congress and other governmental agencies. Black & Veatch, in collaboration with WEF and select utilities, provided the technical and financial basis for this assessment—the Assessment of Reconstruction Costs and Debt Management for Wastewater Utilities Affected by Hurricane Katrina.
The recent natural disaster of Hurricane Katrina devastated wastewater utilities in Louisiana, Mississippi, and Alabama. Many treatment systems suffered catastrophic damage. Compounding the problem, some of the affected utilities lost over half of their rate base, undermining their ability to generate sufficient revenue to meet operations and maintenance costs and bond payments. Public health has...
SourceProceedings of the Water Environment Federation
SubjectSession 90: Utility Management: Disasters Happen – Be Prepared!
Document typeConference Paper
Print publication date Jan, 2006
ISSN1938-6478
SICI1938-6478(20060101)2006:5L.6975;1-
DOI10.2175/193864706783761554
Volume / Issue2006 / 5
Content sourceWEFTEC
First / last page(s)6975 - 6990
Word count211
Description: Book cover
Abstract
To investigate odor control for collection system application, a 6,800 m3 h−1 (4,000 cfm) Bioway Purspring™ biotrickling filter (BTF) was installed at the Hyperion Treatment Plant as first-stage treatment for ventilated sewer air. For second-stage treatment, three types of biofilter media, Biorem, Envirogen, and compost, were evaluated along with two types of activated carbon media, virgin and Midas™. The BTF provided 98 percent removal with inlet H2S as high as 100 ppm. The bulk of the H2S removal occurred in the lower media with an average H2S loading rate 24 g m−3h−1 and maximum of 76g m−3 h−1. When air flow was increased 50 percent, H2S removal decreased to 94 percent. The BTF erformed well with reduced irrigation and with recycled drainage water, but the amount of acid was onstant, so neutralization chemical requirements remain unchanged.The BTF provided minimal reduction of the toxic VOCs detected except for toluene. For the Hyperion influent source, the BTF outlet odor averaged about 3,500 D/T, so in addition to being mandated for air quality, second-stage treatment is also needed for odor control. Over the nine-month testing period, there was only one partial loss of treatment, lasting just two days, which was attributed to toxic compounds in the incoming air stream.Biofilters were initially preferred for second-stage treatment, but the testing showed that none of the units yielded acceptable outlet odor. The biofilters reduced BTF odor by about 90 percent, but the final outlet odor of 300 to 500 D/T was not acceptable. The biofilters provided no significant reduction of the toxic VOCs measured with the exception of toluene, which was reduced by 70 percent in the Envirogen and compost media units. The virgin carbon maintained excellent odor control over a nine-month period with a final outlet of 133 D/T and a third-stage outlet of 69 D/T. The virgin carbon media provided good VOC removal except for chloroform and methylene chloride. The second-stage Midas™ carbon provided excellent odor reduction to 107 D/T and good VOC removal except for chloroform.As a result of the Hyperion testing, the final collection system design was modified from a Bioway BTF followed by a biofilter to a Bioway BTF followed by two stages of virgin carbon.
To investigate odor control for collection system application, a 6,800 m3 h−1 (4,000 cfm) Bioway Purspring™ biotrickling filter (BTF) was installed at the Hyperion Treatment Plant as first-stage treatment for ventilated sewer air. For second-stage treatment, three types of biofilter media, Biorem, Envirogen, and compost, were evaluated along with two types of activated carbon media,...
SourceProceedings of the Water Environment Federation
SubjectSession 53 Management of Odors and VOCs: Clearing the Air: New Approaches to Odor Control Issues
Document typeConference Paper
Print publication date Jan, 2003
ISSN1938-6478
SICI1938-6478(20030101)2003:7L.138;1-
DOI10.2175/193864703784640848
Volume / Issue2003 / 7
Content sourceWEFTEC
First / last page(s)138 - 152
Word count377
Description: Book cover
Abstract
Two stage odor control facilities featuring biotrickling filters and biofilters provide a “green” solution to collection system odor control. As an alternative to chemical addition, the City of Los Angeles is installing seven biological odor control facilities in its collection system. The facilities, which will be designed to treat H2S concentrations up to 150 ppm, will be chemical free, operator friendly, relatively maintenance free, and aesthetically pleasing.
Two stage odor control facilities featuring biotrickling filters and biofilters provide a “green” solution to collection system odor control. As an alternative to chemical addition, the City of Los Angeles is installing seven biological odor control facilities in its collection system. The facilities, which will be designed to treat H2S concentrations up to 150 ppm, will be chemical...
SourceProceedings of the Water Environment Federation
SubjectSession 9 Biofilters and Other Biological Treatment Systems II
Document typeConference Paper
Print publication date Jan, 2002
ISSN1938-6478
SICI1938-6478(20020101)2002:5L.801;1-
DOI10.2175/193864702785140276
Volume / Issue2002 / 5
Content sourceOdors and Air Pollutants Conference
First / last page(s)801 - 809
Word count79
Description: Book cover
Abstract
Two stage odor control facilities featuring biotrickling filters and biofilters provide a “green” solution to collection system odor control. As an alternative to chemical addition, the City of Los Angeles is installing seven biological odor control facilities in its collection system. The facilities, which will be designed to treat H2S concentrations up to 150 ppm, will be chemical free, operator friendly, relatively maintenance free, and aesthetically pleasing.
Two stage odor control facilities featuring biotrickling filters and biofilters provide a “green” solution to collection system odor control. As an alternative to chemical addition, the City of Los Angeles is installing seven biological odor control facilities in its collection system. The facilities, which will be designed to treat H2S concentrations up to 150 ppm, will be chemical...
SourceProceedings of the Water Environment Federation
SubjectSession 13 - Management of Odors and VOCs: Management of Odors and VOCs I
Document typeConference Paper
Print publication date Jan, 2002
ISSN1938-6478
SICI1938-6478(20020101)2002:16L.281;1-
DOI10.2175/193864702784247170
Volume / Issue2002 / 16
Content sourceWEFTEC
First / last page(s)281 - 289
Word count79
Description: Book cover
Abstract
The City of Los Angeles' 1.1 billion U.S. Hyperion Full Secondary Project has triumphed over 14 years of design and construction challenges in the world’s sixth largest metropolitan area, earning the designation by the American Public Works Association as "one of the great environmental achievements of the 20th Century". This comprehensive wastewater treatment upgrade provides an average design capacity of up to 1,700,000 m3/d (450 mgd).As the Project moved from concept to reality, many technical and institutional challenges were successfully resolved:Meeting schedule requirements of a negotiated Consent Decree to reach full secondary treatment standards for the first time in nearly half a century.Keeping facilities operational 24 hours a day throughout an 11-year construction period.Implementing state-of-the-art treatment technologies.Significantly increasing primary, secondary, and biosolids handling capacity on the existing site.Being a good neighbor to the surrounding community, including residents whose homes overlook the project site.Figure 1 presents an aerial photo of the completed project.
The City of Los Angeles' 1.1 billion U.S. Hyperion Full Secondary Project has triumphed over 14 years of design and construction challenges in the world’s sixth largest metropolitan area, earning the designation by the American Public Works Association as "one of the great environmental achievements of the 20th Century". This comprehensive wastewater treatment upgrade provides an average...
SourceProceedings of the Water Environment Federation
SubjectSession 13 -- Management, Operation and Maintenance
Document typeConference Paper
Print publication date Jan, 2001
ISSN1938-6478
SICI1938-6478(20010101)2001:5L.489;1-
DOI10.2175/193864701784293314
Volume / Issue2001 / 5
Content sourceWEFTEC Latin America
First / last page(s)489 - 501
Word count168

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