Loading items There are no items to display at the moment. Something went wrong trying to load these items. Explore Content Search and use over 20,000 items from any device including Proceedings, Fact Sheets, Books, Technical Reports, Articles and more! Search Access Water View compilations From PFAS to Operations to Stormwater to Biosolids our compilations help you quickly access content on important industry topics. Browse compilations Subscribe Gain access to over 20,000 items via the annual subscription. Subscribe What's trending on Access Water Understanding Polymer For Thickening And Dewatering ProcessesPolymers are excellent flocculants and are critical for use as a solids conditioner prior to thickening and dewatering equipment. Applying polymer prior to a thickening or dewatering process, or “conditioning”, is often a requirement for the thickening or dewatering equipment to successfully operate. This operator fact sheet takes readers through the basics of polymers used in thickening and dewatering processes. You will learn about different types of polymer products, how to calculate polymer dose, appropriate handling and storage of polymer products, and equipment and processes relating to make-down and activation. This information can help operators make informed decisions to save money on polymer use in water resource recovery facilities (WRRFs).Author(s): Water Environment FederationContributing authorsHeidi BauerYong KimSourceWater Environment FederationDocument typeFact SheetPublisherWater Environment FederationPrint publication date Jun, 2020Volume / Issue Content sourceOperator Initiative Advisory PanelWord count211Subject keywordswastewatertrainingfundamentalspolymerthickeningdewateringflocculationflocculantsconditioningmathOperationOperator TrainingOperatorChapter 8 of Safety, Health and Security in Wastewater Systems, MOP 1, 6th EditionSince the Triangle Shirtwaist Factory fire in 1911, health and safety has been an upfront management tool spoken in the same context as productivity, quality, and cost. The fire showed that fatalities and injuries, if prevented, have a direct effect on the bottom line and the workforce.This Manual of Practice will serve as an injury-reduction tool to all those working in the wastewater field. There are guidelines for creating written programs and procedures as well as guidelines that describe how to perform a confined space entry, lockout/tagout, and chemical deliveries. From the laboratory to sewer system collection applications, this manual has recommendations that could help you reduce injuries and mishaps to ensure the ultimate safety of employees.Author(s)Water Environment FederationSourceMOP from Water Enviornment FederationCommitteeSafety, Health and Security in Wastewater Systems task force of WEFDocument typeDigital BookPublisherWater Environment FederationPrint publication date Sep, 2013Volume / Issue First / last page(s)1 - 385Copyright2013Word count132Subject keywordsWastewaterPPEvirusparasiteinfectionbiological hazardspathogenAerosolEvolution of Poly- and Perfluoroalkyl Substances (PFAS) Management: Holistic Approach to Understanding and Reducing PFAS DischargeWEFTEC, the largest event of its kind in North America, offers water quality professionals the best in water quality education and training. With almost 200 technical sessions, workshops, mobile sessions, local facility tours and 1,000+ exhibitors, it is the premier water conference! The WEFTEC technical program is selected through a rigorous, peer-review process, ensuring that attendees experience the highest-quality education. WEFTEC speakers are experts and innovators, leading the way in water quality. The following paper was presented at WEFTEC 2019.Author(s)J. EgliM.R. HicksSourceProceedings of the Water Environment FederationSubject212 Knowledge Development Forum: What are PFAS and What Do We Need to Know?Document typeConference PaperPublisherWater Environment FederationPrint publication date Sep, 2019ISSN1938-6478DOI10.2175/193864718825156943Volume / Issue Content sourceWEFTECCopyright2019Word count3,510Subject keywordsDisinfectionAssociated keywords:Industrial Issues, Including Mining and Petro-Chemical IndustriesInteractiveLaboratory PracticesIntelligent Water SystemsThis report outlines the 2016 Knowledge Development Forum discussions on intelligent water systems, and serves as the basis for expanding the vision for intelligent water systems. The hope is that through continuing the conversation, we will be able to separate fact from fiction regarding the implementation of intelligent water solutions and practices and moving towards implementing intelligent water systems in the industry.Author(s)Water Environment FederationSourceTechnical ReportSubjectInfrastructure, Leadership, Utility ManagementDocument typeTechnical ReportPublisherWater Environment FederationPrint publication date Jan, 2016Volume / Issue Content sourceWater Environment FederationFirst / last page(s)1 - 20Copyright2016Word count7,683Subject keywordsAsset Management, Automation, Research & InnovationFly, swim or crawl your way to safer work conditionsFor workers in the water sector, inherent workplace conditions expose them to daily potential for serious injury. Working in the confined spaces under city streets often comes with awkward postures, incessant vibrations, extreme temperatures, and hazardous gases that can injure. For workers dealing with chemicals or risking exposure to known viruses, bacteria, protozoa, and parasites, the risks become even more complicated. Physical inspection of tanks, pipes, and reservoirs — regardless of provided safety precautions — often require workers to step into environments that carry these risks as well as potential for catastrophic physical traumas.As a result, safety is a necessity. While strict adherence to departmental safety protocols and the proper deployment of personal protective equipment can reduce injuries, the only way to truly eliminate these types of injuries is to keep workers from entering those dangerous environments in the first place.However, such a simple proposition, proves more difficult in real-world application. How does a utility actually inspect and repair small-diameter pipes, investigate sediment buildup in holding tanks, or evaluate a collapsed pipe or sewer tunnel without deploying personnel into that very dangerous situation?Historically, these projects often called for entire system segments to be taken off-line, tanks to be drained, or heavy equipment to dig up entire city blocks. Now, the burgeoning drone industry is bringing numerous purpose-built solutions to the aid of water and wastewater agencies looking for safer, more efficient, and more affordable options.Author(s)Marc GandillonSourceArticle of WE&T MagazineSubjectAutomation;Collection Systems;SafetyDocument typeMagazine ArticlePublisherWater Environment FederationPrint publication date Feb, 2019Volume / Issue31 / 2Content sourceWater Environment and Technology MagazineFirst / last page(s)32 - 35Copyright2019Word count1,480Subject keywordsdronesclosed-circuit televisionhigh-definition videoinfraredsensors3D modelsremote operated vehiclesEmergency Planning, Response, and RecoveryEmergency Planning, Response, and Recovery will help your utility develop an emergency response plan to recover from events such as infrastructure failure, small- and large-scale natural disasters, and human-created incidents. Includes case studies from around the world.Author(s): Water Environment FederationDocument typeDigital BookPublisherWater Environment FederationPrint publication date Jul, 2013Volume / Issue2013 Word count90,518A Convenient Spreadsheet-Based Thermal Model for Heat Recovery and Effluent CoolingThe prime objective of this work was to identify the major sources of internal heat generation and locations within the water recovery facility that provide the most potential for heat dispersion to the atmosphere. A facility-wide thermal energy model applied to each unit process was developed, calibrated and validated at two water recovery facilities....Author(s)John BratbySourceProceedings of the Water Environment FederationSubject403 Process Modeling for Industrial Wastewater System Design and OptimizationDocument typeConference PaperPublisherWater Environment FederationPrint publication date Sep, 2018ISSN1938-6478SICI1938-6478(20180101)2018:13L.2465;1-DOI10.2175/193864718825136972Volume / Issue2018 / 13Content sourceWEFTECFirst / last page(s)2465 - 2483Copyright2018Word count208Subject keywordsTemperatureHeat recoveryHeat increaseCoolingCoversNitrification new to the platform Key Safety Information for COVID-19 and other BiohazardsBased on the available data on the COVID-19 virus and knowledge about similar viruses, experts agree that the occupational risk of infection to wastewater workers from the COVID-19 virus is low, and not greater than those from other pathogens typically present in wastewater. This fact sheet reviews the key points.Author(s)Water Environment FederationSourceWater Environment FederationCommitteeWEF’s Blue Ribbon Panel on CoronavirusDocument typeFact SheetPublisherWater Environment FederationVolume / Issue Content sourceWEF’s Blue Ribbon Panel on CoronavirusFirst / last page(s)1 - 2Copyright2021Word count9Subject keywordsCOVIDCoronavirusWastewater TreatmentInfectious DiseaseGreenhouse Gas Sources and Sinks for Water Resource Recovery FacilitiesThis operator fact sheet provides an overview of process and nonprocess GHG emissions from wastewater utilities, specifically from WRRFs and wastewater collection systems. This document also provides information regarding GHG “sinks” that can be used to offset emissions. By understanding how system operations affect climate change, wastewater operators can make efforts to minimize negative effects and maximize offsets.Author(s)Bill BrowerMark LangJohn WillisDocument typeFact SheetPublisherWater Environment FederationVolume / Issue Content sourceWater Environment FederationFirst / last page(s)1 - 7Copyright2021Word count11Subject keywordsGreenhouse GasClimateMethaneNitrous OxideSustainabilityWastewater TreatmentBiosolidsLiquid Phase Collection System Sulfide Control--Early Field Results using a New Low-Hazard Iron ProductIron salts (ferrous/ferric chloride and sulfate) have been used for over 70 years in hydrogen sulfide odor control applications and are a well understood technology with a proven track-record of successful long-duration H2S control in collection systems, solids processing units, solids transfer lines and anaerobic digesters. While iron salts are an inexpensive solution, the hazardous nature of the chemical constrains their use outside the treatment plant. Many municipalities are wary of bringing hazardous chemicals to smaller pump and lift stations in residential neighborhoods. Chemicals with lower hazard levels, such as magnesium hydroxide and especially calcium nitrate (CaN), are thus the odor control technology of choice for many such applications across the country. Through widespread use, CaN is well-known as an simple and effective odor control solution for medium to long-duration lines in the collection system, and can be used in applications to remove sulfide that is already present at its point of addition (curative) or before the sulfide appears to prevent its formation (preventative). Nevertheless, certain drawbacks have been largely disregarded for lack of better options.Author(s)Ian WatsonJohn WaltonZachary ScottSimon AlmeidaDocument typeConference PaperPublisherWater Environment FederationPrint publication date Jun, 2020ISSN1938-6478DOI10.2175/193864718825157590Volume / Issue Content sourceCollection Systems ConferenceCopyright2020Word count15Subject keywordsPump Stations/OdorsActionable Flow Monitoring PlatformFlow monitoring in collection systems poses technical and data management challenges. Technical challenges are exemplified in extracting actionable knowledge in real-time to inform system operators. This knowledge can vary from scatter graph analysis to characterization of the effectiveness of I/I removal, overflow abatement, and customer services. Data management is a multidimensional challenge that includes pipelining data in real-time, visualization, comparison to historical data, and building a collaborative environment for users with different background knowledge. This paper will introduce an actionable platform for real-time flow analysis. The platform combines machine intelligence with Power BI, a web-based data management system that allows visualization, interactive collaboration, and provenance tracking of data files. A case study will demonstrate through scatter plot graphing the improved data interpretation in real-time, efficiency in evaluating flow meter data, and recommending proactive actions for system operators.Author(s)Mostafa ElagHazem GheithDocument typeConference PaperPublisherWater Environment FederationPrint publication date Jun, 2020ISSN1938-6478DOI10.2175/193864718825157576Volume / Issue Content sourceCollection Systems ConferenceCopyright2020Word count5Subject keywordsPlanningAchieving Consent Order Compliance: Comprehensive Mini-Basin Planning and Rehabilitation to Eliminate Sanitary Sewer Overflows and Reduce Hydraulic OverloadsThe Susquehanna Township Authority (STA), a tributary community to Capital Region Water (formerly the Harrisburg Authority) owns and operates over 130 miles of separate sanitary sewer facilities divided into four (4) drainage basins, along with seven (7) pump stations. The original portions of the system, many of which still exist, were constructed the late 1960's. Extensive infiltration and inflow, a common problem in aged infrastructure, leads to system capacity issues, additional costs, and ultimately sanitary sewer overflows (SSO). In the case of the Susquehanna Township Authority, SSO's came frequently enough that the Pennsylvania Department of Environmental Protection issued a Notice of Violation for hydraulically overloaded conditions in the two largest (Paxton Creek and Asylum Run) of the Authority's four main drainage basins. With this notice, the Authority was no longer able to connect additional growth until a Corrective Action Plan (CAP) was prepared and Consent Order and Agreement (COA) negotiated. The Authority prepared a CAP that included a comprehensive rehabilitation plan for the two affected drainage basins, based on wet weather flow measurement and sub-basin prioritization. The CAP was approved in 2013 and the COA in 2019. The COA requires STA eliminate all overflows in the Paxton Creek and Asylum Run Basins by June 30, 2024.Author(s)Joel KostelacJosiah BairDocument typeConference PaperPublisherWater Environment FederationPrint publication date Jun, 2020ISSN1938-6478DOI10.2175/193864718825157575Volume / Issue Content sourceCollection Systems ConferenceCopyright2020Word count19Subject keywordsSanitary Sewer OverflowsOld Tampa Bay Tidal Circulation Water Quality ImprovementsIn highly urban areas, large transportation projects often spend tens of millions of dollars purchasing right-of-way for stormwater management, including the purchase of developed property to be demolished to construct ponds. In lieu of traditional stormwater BMP's, Atkins and FDOT looked at an area of Old Tampa Bay that has historically had poor water quality and evaluated improving this offsite area to compensate for other projects that drain to Tampa Bay. This paper explores that, after more than two years of in-situ study, modeling and coordination with multiple agencies, Atkins and FDOT have established a new tidal connection through the SR 60/Courtney Campbell Causeway to improve water quality north of the causeway and create an ecological uplift that is conducive to seagrass growth.Author(s)Daniel LauricelloVirginia CreightonDavid TomaskoMichael SalisburyEd CronynShayne PaynterDocument typeConference PaperPublisherWater Environment FederationPrint publication date Mar, 2020ISSN1938-6478DOI10.2175/193864718825157639Volume / Issue Content sourceNational Stormwater SymposiumCopyright2020Word count9Subject keywordsProgram DevelopmentManagementPlanning and AnalysisGood Streams Make Good Neighbors--Enhancing Stream and Floodplain Restoration Projects Through Property AcquisitionsImplementation of stream and floodplain restoration projects in highly urbanized areas present many challenges, including conflicts with existing infrastructure, involvement of multiple stakeholders and property owners, and extensive permitting requirements. However, these challenges are surmountable with thorough data collection, detailed understanding of existing conditions, and extensive property owner and stakeholder outreach. Sometimes the biggest hurdle to completing urban stream and floodplain restoration projects is having enough space to complete holistic, watershed-based projects that aim to reverse previous alterations to natural systems such as concrete lined channels, culverts, and flood control structures. The Northeast Ohio Regional Sewer District's (NEORSD's) Regional Stormwater Management Program (RSMP) aims to construct projects that minimize stream erosion, mitigate flood risks to buildings, roads, and utilizes, and protect and enhance water quality throughout the Regional Stormwater System (RSS). This paper provides an overview of the development of RSMP's property acquisition process and present case studies of how property acquisitions along the RSS have created opportunities to construct stream and floodplain restoration projects using more naturalized means and less hardened structures.Author(s)Dave RitterKristen BuccierDocument typeConference PaperPublisherWater Environment FederationPrint publication date Mar, 2020ISSN1938-6478DOI10.2175/193864718825157637Volume / Issue Content sourceNational Stormwater SymposiumCopyright2020Word count14Subject keywordsProgram DevelopmentManagementPlanning and AnalysisSpatial Analysis of Retarding Basin Opportunities--Next Steps for Melbourne's Liveability JourneyMelbourne, Australia faces several challenges in relation to liveability, including population growth, urban densification and climate change, which are placing strain on the capacity of existing public open space. Melbourne Water manages 256 Flood Retarding Basins (RBs), many of which already provide various benefits in addition to flood-mitigation, such as sports fields and stormwater wetlands. There is however significant potential to expand or increase these broader benefits, and associated value to the environment and community. This study developed a flexible spatial analysis methodology to compare 'multi-use' opportunities at each RB in a holistic manner. In order to test spatial analysis results, four case studies were developed to illustrate the opportunities.Author(s)Casey FurlongDavid HowardNino PolonDocument typeConference PaperPublisherWater Environment FederationPrint publication date Mar, 2020ISSN1938-6478DOI10.2175/193864718825157622Volume / Issue Content sourceNational Stormwater SymposiumCopyright2020Word count12Subject keywordsInnovationStormwater ManagementHow The Pittsburgh Water and Sewer Authority is Achieving Affordable Water Quality Through Integrated Watershed ManagementMany US communities have been legally challenged to address their respective water quality impairments through major infrastructure projects; sometimes investing billions to achieve compliance. Unfortunately, it seems that no sooner is one issue or pollutant source addressed than other water quality pollutant sources and issues are raised and mandatory abatement ordered by Federal and State regulators. This paper shows how the Pittsburgh Water & Sewer Authority (PWSA) is implementing an affordable water quality-based strategy using USEPA's integrated planning framework and the Water Infrastructure Improvement Act for addressing the multiple sources of pollution and multiple CWA obligations. It also shows how PWSA is successfully combining affordability with measurable in-stream water quality improvement to develop an affordable combination of green, gray and watershed-based controls that maximize improvement to water quality, watershed health, and the community.Author(s)Ana FloresBrandon VatterDocument typeConference PaperPublisherWater Environment FederationPrint publication date Mar, 2020ISSN1938-6478DOI10.2175/193864718825157621Volume / Issue Content sourceNational Stormwater SymposiumCopyright2020Word count17Subject keywordsStormwater Action PlanningGREENING THE PIPELINE--RE-PURPOSING A HERITAGE LISTED ASSET TO ENHANCE COMMUNITY WELL-BEINGThe Greening the Pipeline initiative and associated pilot-park demonstrate: 1) The important role the community can play in the co-design process; 2)How a heritage listed asset can be re-purposed to benefit the community; 3) How alternative governance and financing models can contribute to a shared value outcome; 4) A repeatable open space solution that is cost effective, safe and practical to maintain; 5) How to address high heat vulnerability through the creation of a linear park; and 6) How liveability can be underpinned by an integrated water management solution. Each of these lessons will be discussed in detail in the paper. The Greening the Pipeline Initiative and the Pilot Park at Williams Landing provide a leading example of re-purposing a disused asset to improve the liveability of the local community. This used a green infrastructure approach, including an integrated water management solution, providing flood reduction, stormwater quality and urban heat island benefits. The Pilot Park has been a highly successful showcase for the broader initiative, leading to the first full 5km section now undergoing detailed planning and design.Author(s)Nino PolonDavid HowardDocument typeConference PaperPublisherWater Environment FederationPrint publication date Mar, 2020ISSN1938-6478DOI10.2175/193864718825157606Volume / Issue Content sourceNational Stormwater SymposiumCopyright2020Word count12Subject keywordsStormwater Worldwide