sanitary engineering Articles

  • How Much Could You Save by Avoiding a Consent Decree?

    In 2012, St. Louis, MO (Metropolitan St. Louis Sewer District) set a record for the most expensive sewer consent decree in history at $4.7 BILLION to be spent over the next 23 years. The cause of this consent decree and the cause of most consent decrees are overflow events that allow untreated waste into the nearby lakes, streams, river, or other nature areas. There are typically two types of ...


    By EnTech Engineering, Inc

  • Georgia’s innovative approach to CMOM implementation - Georgia member association & state collaborate to improve SSO approach

    In 1998, the Georgia Environmental Protection Division (EPD) adopted a Zero Tolerance Policy for the area in and around metro Atlanta to address sanitary sewer overflows (SSOs). This policy required EPD to take an enforcement action against utilities for any SSO, regardless of the size, volume, or cause of the release. In response to this enforcement-based SSO strategy, at the request of its ...

  • PROJECT BRIEF - Saved Over $1 Million in Unnecessary Expenses - Santa Barbara, California

    Temporary Flow Monitoring Santa Barbara, CA - The City of Santa Barbara (CSB) serves nearly 100,000 customers. During the seasonal rains, deteriorating and aging sewer pipes permit unwanted I/I to enter the system raising the risk of sanitary sewer overflows. Santa Barbara recognized that a more comprehensive understanding of their systems performance was necessary to more proactively manage ...


    By ADS Environmental Services

  • Surveillance and Improvement of Peruvian Drinking Water Case Study

    The surveillance and quality control of public water supplies are vital prerequisites for the protection of public health. In practice however, the two activities of surveillance and quality control are often confused and inadequately implemented, especially in the case of surveillance in less developed countries. The two are clearly distinguished by the World Health Organization (1984): ...


    By DelAgua Group

  • Experiences from the full-scale implementation of a new two-stage vertical flow constructed wetland design

    This paper describes the results of the first full-scale implementation of a two-stage vertical flow constructed wetland (CW) system developed to increase nitrogen removal. The full-scale system was constructed for the Bärenkogelhaus, which is located in Styria at the top of a mountain, 1,168 m above sea level. The Bärenkogelhaus has a restaurant with 70 seats, 16 rooms for ...


    By IWA Publishing

  • The best alternative to the protection of the UF membranes - Case Study

    Advance solutions to the recirculation of water in swimming pools. Problem The public swimming pools are continuously used during all the week for many people for making sport, amusement or relax. In these installations, the visual aspect and the sanitary conditions must be guaranteed all the time. In indoor public pools, even with the mandatory previous shower and the use of ...


    By Sistema Azud, S.A.

  • Municipal solid waste management in Khoram Abad City

    This paper presents an overview of current municipal solid waste management in Khoram Abad city. Necessary data was collected from municipality information, direct observation, taking photography, Interviewing with responsible persons and a questionnaire. According to data collected by the local authorities, the waste generation rate is estimated to be 800 g/cap. d   with density of 243 ...


  • DelAgua Kit Case Study, Daisy Adams in The Gambia

         DELAGUA KIT CASE STUDY, DAISY ADAMS IN THE GAMBIA Daisy Adams undertook a study with Water for Africa in ...


    By DelAgua Group

  • CMOM set to clean up in the USA

    Regulatory pressure on public utilities is a regular occurrence around the world, but some requirements are fundamental enough to effect a major change in the way an industry performs. The CMOM program for sewer collection utilities in the USA promises to be such an initiative. Its impact will be profound, as Tom Davies, President of Wallingford Software Inc, explains in this article. The CMOM ...


    By Innovyze

  • Distance Education: Past, Present, and Future

    ABSTRACTAlternative training technologies are being evaluated with increasing interest in distance education and online training. Evaluations show the benefit of distance education because of limited staffing, shrinking budget dollars for travel to short schools and conferences, and the convenience, availability, and quality of online training selections. In many industries today, distance ...

  • More Power. More Control.

    Cuyahoga County pumps value to its community through greater control, standardization and technological advancements. Cuyahoga County is the most populous county in Ohio, with nearly 1.4 million residents. Part of Greater Cleveland, the county is named after a Native American word meaning "crooked river." With more than 63% of its total area made up of water, the county strives to foster strong ...


    By Gorman-Rupp Co.

  • Saving Energy and Improving Quality - Case Study

    Location: Melville, New York Owner: Newsday Inc. Engineer: Phase 1: Cameron Engineering Phase 2: H2M (Holzmacher, McLendon & Murrell) Contractor: Newsday Inc. & Benson Construction and Development Stringent Effluent Requirements Located in Melville, NY, Newsday Inc. provides a daily newspaper for the metropolitan area of Long Island. More than 30 ...


    By WesTech Engineering, Inc.

  • Bayview Community - Wastewater Treatment System

    Formed just after the Civil War, “Bayview” is a 300 year‐old predominately African American community. The residents of the community organized and created the Bayview Citizens for Social Justice In 1998. The group formed partnerships to improve the lives of the community by installing a water and wastewater treatment system. Funding came from multiple Federal. State and County ...


    By Bio-Microbics, Inc.

  • Leachates: Technologies for onsite sustainable leachate management

    Municipal landfill leachate is characterized by high concentrations of recalcitrant organic compounds, ammonia, suspended material and heavy metals. As a result, leachate is difficult to manage because conventional forms of biological and chemical treatment are inefficient at dealing with such a diverse and complex waste stream. Because of widely varying practices in solid waste management, an ...


    By Waste Advantage Magazine

  • Biological nutrient removal case study

    The Challenge Chester Engineers was contracted by the Mountaintop Area Joint Sanitary Authority to design an upgrade to the existing treatment plant to address new Chesapeake Bay nutrient requirements and to eliminate the use of chlorine for ammonia nitrogen removal and disinfection to address trihalomethane permit violations.  Chester was also required to complete the design to ...


    By Chester Engineers

  • Dam Inspection: A Day at Still Creek Dam

    We’ve been busy lately visiting various municipalities, police forces, aquaculture sites, and water treatment plants showcasing both our portable ROV systems and our new product line, the DT340 Pipe Crawler. One project in particular, took place at the Still Creek Dam in Tamaqua, PA. Cody and Sam packed up the crawler and headed down ...


    By Deep Trekker Inc.

  • Spreadsheet Implementation of Activated Sludge Model #1 for Sequencing Batch Reactors

     KEYWORDS Sequencing Batch Reactor, Simulation Modeling, ASM1, Flow Routing BACKGROUND Many small municipal wastewater treatment plants in North America use sequencing batch reactors (SBR) to provide secondary treatment. SBRs are a fill-and-draw variant of the activated sludge process in which a single reactor is used to mix raw ...

  • City of Warm Springs, Georgia - Case Study

    The City of Warm Springs is a small community of approximately 500 residents located in central Georgia. In 2010, water testing found a radium level between 8 - 11 pCi/L and a Gross Alpha level of 25 pCi/L, both above state and USEPA drinking water regulations of 5 pCi/L and 15 pCi/L respectively. Engineering Management Inc (EMI) conducted a pilot test in late 2010 to test a manganese dioxide ...

  • Robert Bosch GmbH, Germany - case study

    Overview Bosch is a multinational engineering and manufacturing firm specializing in electronics, automotive components, power tools, security systems and home appliances. Water System Challenges There are two main water supply intakes into eleven buildings of the Bosch facility in , with annual consumption of about 40,000 m3. Previous attempts were made ...

  • Spiral-Wound Sepralators: The Range of Options

    Introduction Spiral-wound membrane elements (sepralators) were used mainly for basic water purification until the mid to late 1970s, when broader uses began to receive attention. New applications often required special consideration such as; sanitary construction for the dairy industry, high temperature for food processes and waste streams, and high pressure capability for desalination. In ...


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