Wastewater Collection Articles

  • Alternative collection systems for decentralized wastewater management: an overview and case study of the vacuum collection system in Eretria town, Greece

    In small and rural communities, the installation cost of conventional gravity-flow collection systems is often very expensive due to the presence of rocky terrain, high water table, unstable soils, extremely flat terrain, which may impose substantial difficulties in construction. Pressure, vacuum and septic tank effluent gravity collection systems are among the alternatives sewers used most ...


    By IWA Publishing

  • Assessing population coverage of safely managed wastewater systems: a case study of Lebanon

    This paper presents the evaluation of the proportion of the population connected to safely managed wastewater collection systems (PW) based on the proportion of population connected to wastewater collection systems and additional specific indicators that can properly inform on the extent of environmental risks associated with the disposal of wastewater. A safely managed wastewater factor ...


    By IWA Publishing

  • Urban domestic wastewater: how to reduce individual injection?

    The present paper aims to identify ways to reduce pollution injected by residents in the urban wastewater network system. Two approaches are considered. The first one uses flow and pollutant calculation to test whether a polluter can easily be identified in a neighborhood. The second approach uses a survey to examine what incentive would be most effective to influence residents’ behavior. ...


    By IWA Publishing

  • Modeling metal bioaccumulation and tissue distribution in killifish (Fundulus heteroclitus) in three contaminated estuaries

    The present study experimentally assessed the uptake, loss, and resulting tissue distribution of As(V), Cd, Cr(III), Hg(II), and methylmercury (MeHg) in killifish (Fundulus heteroclitus) following aqueous exposure in water collected from 3 contaminated field sites—Baltimore Harbor and Elizabeth River (Chesapeake Bay), and Mare Island (San Francisco Bay)—using a radiotracer technique. Uptake ...


    By John Wiley & Sons, Ltd.

  • Development of a diagnostic tool: the wastewater collection network odour wheel

    The assessment of nuisance odour problems and the application of an effective odour management programme for the associated industrial activity may be achieved using a representative odour wheel and Odour Profile Analysis methodology. The odour wheel is a very useful tool for conducting odour quality control monitoring and developing a constructive dialogue regarding nuisance odours with the ...


    By IWA Publishing

  • The properties of Seljuq and Ottoman era public fountain faucets and some rare faucet samples

    Until the late 19th and early 20th century, public fountains (in Turkish, ‘çeşme’) in Anatolia and Ottoman lands had an important place in everyday life. The water that was collected from various water sources and brought to the city centres through waterlines was supplied to people from the architectural stone structures which we call ‘fountains’. These ...


    By IWA Publishing

  • Excerpt Advanced Sewer Technologies Paper

    Abstract  This document seeks to collect into one place current and new technologies about sewerage system design. The document organizes the information found in the 295 documents that were reviewed into six subject areas: Advanced Onsite Technologies; Alternative Wastewater Collection System Designs and Technologies; Gravity Sewer System Design and Technology; Infiltration ...

  • Alternative sanitation options for households and communities

    The resource-intensive wastewater collection and treatment systems found in many parts of the developed world are not feasible for meeting the sanitation[1] needs of the less developed regions still lacking or having poor sanitation.  Establishment and maintenance costs are high and large amounts of energy are ...


    By IWA Publishing

  • Carpet Cleaners Reducing Carpet Drying Time

    One of the major worries when cleaning carpets is the drying time. The heavier the carpet, the longer the drying time. This can be quite a challenge for offices, retail stores, hotels, and other commercial and public locations; where soppy, wet carpets mean molds, germs, pests, and odor, not to mention rotten wood floors and wet shoes can annoy and deter customers, and even employees.  ...


    By Daimer Industries Inc.

  • Impediments to the adoption of alternative sewerage in South African urban informal settlements

    In recent decades South Africa has witnessed a substantial growth in its urban population. This growth has been accompanied by the mushrooming of informal settlements (shantytowns) flanking more formal development. The lack of adequate urban drainage in many of these informal settlements has resulted in extremely polluted environments which add to the disease burden of the poor people who live ...


    By IWA Publishing

  • The karez of the Sauran region of Central Asia

    A large number of lines of water collection wells were identified by aerial surveys in the arid region near the ancient city of Sauran on the Middle Syr Darya (South Kazakhstan, Central Asia). They are locally called karez, which in Persian means ‘water uplift’. Initially these were assumed to be qanat, a water collection and distribution system that is widespread in the Middle East, North Africa ...


    By IWA Publishing

  • CSOs Reduced by 77%, SSOs Reduced by 78%

    Nashville, TN - The City of Nashville struggled with excessive overflows totaling 158 SSOs and 30 CSOs in 1989 and 1990. They found themselves with a consent decree and officials immediately started abatement programs to address both issues. A long term flow monitoring network was installed by ADS Environmental Services along with I/I analysis designed to isolate the ...


    By ADS Environmental Services

  • Corrosion failure in deep wastewater tunnels: lessons and solutions

    Charleston Water System operates a deep inverted siphon tunnel system to collect and convey wastewater from the downtown peninsula across Charleston Harbor. This paper describes the considerations used in designing a replacement tunnel system for the original system constructed in the early ...

  • Integrating Risk-Based Renewal Into a Capital Improvement Program

     ABSTRACT The Dallas Water Utilities (DWU) is currently completing a master plan for the City’s wastewater collection system (MWH and DWU, Comprehensive Wastewater Collection System Assessment, Collection System Master Plan, Draft June 29, 2007). The master plan is designed to: • Ensure collection system capacity and customer service• Meet need for sustainable renewal of ...

  • Tunneling Under Austin, Protecting the Environment, and Preserving the Peace

    ABSTRACTFor over a decade, an existing 42-inch wastewater interceptor has plagued the Austin Water Utility (Utility) with higher than usual maintenance demands. Located in the Walnut Creek flow line, this interceptor is partially exposed with manholes rising several feet above the creek bed due to years of erosion. The interceptor suffers from external erosion and is victim to debris floating ...

  • Addressing SSOs in Austin, Texas: Initial Call to Final Fix

    Austin Water Utility of the City of Austin, Texas faces a challenge of correcting sanitary sewer overflows (SSOs) from its wastewater collection system. Austin is required to address and eliminate the SSOs from the collection system on a short schedule to meet a Federal regulatory mandate. The regulatory mandate requires the Utility to correct overflows and to reduce infiltration and inflow (I/I) ...

  • Small Community Treatment Plant Expansion While In Operation Using Advanced Technology

    The Viejas Indian Reservation in Eastern San Diego County owns and operates a gaming casino and outlet shopping mall that recently underwent a large expansion. At the same time, the Viejas Reservation Tribal Government completed the infrastructure project to provide a new water supply distribution and wastewater collection system to serve the entire reservation in addition to the casino and ...

  • A Comparison of Three Wastewater Collection System VOC Emissions Models

    Three models were compared to determine their ability to accurately predict emissions from two wastewater collection system components; gravity flow reaches and drop structures. Models investigated included the INTERCEPTOR Model, TOXCHEM+ and WATER9.Data used to perform the analysis were obtained from published literature. A total of 128 individual runs per model were completed in performing the ...

  • Improving Wastewater Collection and Customer Service with a Computerized Work and Asset Management System

    Management of Corpus Christi’s Wastewater Collection system is improving customer service and the underlying collection system infrastructure by using a computerized work and asset management system (WAMS) linked to the City’s Geographical Information System. The system provides a computerized record of all customer calls for service and a history of all collection system work performed ...

  • Turning data into decisions: Europe’s sewer rehabilitation tool

    CARE-S, a computer-based system for wastewater network management, is due to be launched later this year. BILL MCCANN speaks to SVEINUNG SAEGROV, editor of a new book from IWA Publishing which reports on the system’s development and the benefits it will offer network managers. Wastewater network managers in Europe will soon have available an advanced rehabilitation planning system based on an ...


    By WRc plc

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