On-site Wastewater Articles

  • Countering Wastewater Odor Complaints on a Localized Level

    In countless counties and towns throughout the U.S., there are ongoing new stories about wastewater treatment odors negatively impacting nearby residents and businesses. From Sioux City, Iowa to  ...


    By OMI Industries (OMI)

  • Another MRO company goes wastewater-free!

    Jet Aviation in Basel, Switzerland, is using a VACUDEST vacuum distillation system to efficiently and sustainably treat wastewater left over from refurbishing aircraft parts. This state-of-the-art system replaced outdated chemical/physical treatment at the company. Jet Aviation is particularly pleased with the high quality of the treated water, which can even be reused in maintenance processes. ...


    By H2O GmbH

  • Do storm event samples bias the comparison between sewer deposits contribution?

    Previous researches demonstrated the occurrence of unique in-sewer sediment, the organic layer, on the Marais site in Paris, capable of explaining the entire wet weather sewer production of suspended particles. Other studies on sites having no similar organic sediment, Clichy in Paris and Ecully in Lyon, demonstrated a wet weather sewer deposits contribution (SDC) to effluent pollution ...


    By IWA Publishing

  • Decentralized wastewater treatment using a bioelectrochemical system to produce methane and electricity

    Biological electrochemical systems (BESs) have the potential for decentralized treatment in developing countries. A 46 L, two-chamber, hydraulically partitioned microbial fuel cell (MFC) was designed to replicate low-flow scenarios leaving a composting toilet. The co-evolution of electricity and methane in this MFC was evaluated by testing two distinct waste streams: synthetic feces (Case F) ...


    By IWA Publishing

  • Case Study - Estonian Cell - BCTMP Mill

    Wastewater generated at Estonian Cell The Aspen pulp mill Estonian Cell, part of Heinzel Group, rewarded HydroThane the contract as the technology supplier for their anaerobic treatment after having done extensive piloting in 2011. Since January 2014 the anaerobic treatment has been in operation, earning AS Estonian Cell both national and international recognition as being ...


    By HydroThane STP BV

  • Modeling on-site wastewater treatment system performance fragility to hydroclimate stressors

    Increasing variability of climate-related factors, especially precipitation and temperature, poses special risks to on-site wastewater treatment systems (OWTS), which depend on subsurface saturation conditions for treatment and dispersion of wastewater. We assess OWTS fragility – the degree to which a system loses functionality – as a step to characterizing the resilience of residential ...


    By IWA Publishing

  • The ecological filter system for treatment of decentralized wastewater

    A vertical flow constructed wetland was combined with a biological aerated filter to develop an ecological filter, and to obtain the optimal operating parameters: The hydraulic loading was 1.55 m3/(m2·d), carbon–nitrogen ratio was 10, and gas–water ratio was 6. The experimental results demonstrated considerable removal efficiency of chemical oxygen demand (COD), ammonia nitrogen ...


    By IWA Publishing

  • Chromium and phosphate removal from wastewater in the stainless steel finishing industry - Case Study

    Customer Application and Activity Rimex specializes in metal finishing and architectural metals and has been producing surface finishes on stainless steel and other metals since 1959. The process generates an acidic wastewater which is collected in 2 separate sumps, one for effluents containing chromic acid and another for those containing phosphoric/sulfuric acid. Key ...


  • Domestic wastewater treatment with a decentralized, simple technology biomass concentrator reactor

    A new type of membrane-like aerobic reactor initially designed for the degradation of hydrocarbon-derived groundwater contaminants was tested for treating domestic wastewater. The biomass concentrator reactor (BCR) consists of an enclosed, aerated tank containing a graded filtration medium with the function of solids separation, and was previously used to treat industrial wastewaters ...


    By IWA Publishing

  • Cheyenne Board of Public Utilities in Cheyenne, Wyoming Successfully Moves from Calcium Hypochlorite Tablets to Microclor On-Site Hypochlorite Generation

    The Cheyenne Board of Public Utilities (BOPU) operates the water and wastewater systems for the capital of Wyoming which has a population of more than 63,000. Located in the fast growing Front Range Urban Corridor, BOPU is challenged by growth, periodic water scarcity and aging infrastructure. During high demand, Cheyenne disinfects approximately 2 million gallons from well fields at an ...

  • On the preventive management of sediment-related sewer blockages: a combined maintenance and routing optimization approach

    In this work we tackle the problem of planning and scheduling preventive maintenance (PM) of sediment-related sewer blockages in a set of geographically distributed sites that are subject to non-deterministic failures. To solve the problem, we extend a combined maintenance and routing (CMR) optimization approach which is a procedure based on two components: (a) first a maintenance model is ...


    By IWA Publishing

  • Homestead village case study

    Performance History and Discussion The wastewater treatment facility for the Homestead Village apartment community treats about 115,000 gallons per day of wastewater for discharge into onsite infiltration lagoons. The facility is required to remove nitrogen from the wastewater to less than 10 mg/L before discharging into the ground. The facility struggled to consistently meet this ...

  • Decentralized Wastewater Treatment

    An application used worldwide, now growing in US to address the needs of small communities and developments Conventional sewer operations managed by small communities provide centralized treatment of wastewater of which residents are accustomed. But the expense of operating these systems as they expand with miles and miles of sewer lines is staggering. Expanding sewer line infrastructure, ...


    By Bio-Microbics, Inc.

  • First implementation of a SEMIZENTRAL resource recovery center

    The SEMIZENTRAL approach has been developed for fast growing cities, to meet their challenges regarding the supply of water and the treatment of biowaste and wastewater. Key elements of the SEMIZENTRAL integrated infrastructure approach are high resource efficiency due to urban water reuse and the usage of the energy potential of wastewater/sludge and waste, as well as its system size between ...


    By IWA Publishing

  • Biomarble from Warden Biomedia range selected by WPL for their largest tertiary treatment plant provided for Yorkshire Water`s Danesmoor Site - Case Study

    WPL were challenged with the task to design and manufacture the largest bespoke modular steel wastewater process solution (N-SAF) the company have ever supplied. The unit had to handle 50 l/sec FFT, almost twice the average, so something out of the ordinary was devised. Yorkshire Water's Danesmoor site required a tertiary treatment plant to treat the residual ammonia from the wastewater being ...


    By Warden Biomedia

  • Resource recovery from wastewater in Austria: wastewater treatment plants as regional energy cells

    Although the main function of a wastewater treatment plant (WWTP) is to remove various constituents from wastewater it can also serve as a source of energy and other materials. The generated resources can be used either on-site at the WWTP or elsewhere at an adjacent infrastructure. In the course of a current national research project, the possibilities and potentials regarding the integration ...


    By IWA Publishing

  • Local-scale recovery of wastewater nitrogen for edible plant growth

    An anaerobic/ion exchange (AN-IX) system was developed for recovery and reuse of wastewater nitrogen at point-of-origin. AN-IX combines upflow solids blanket anaerobic treatment with ammonium ion adsorption onto granular natural zeolite. AN-IX operates passively and without energy input. A 57 L empty-bed prototype was operated for 355 days on wastewater primary effluent. Total nitrogen removal ...


    By IWA Publishing

  • A framework for screening sites at risk from contaminants of emerging concern

    Trace levels of a variety of currently unregulated organic chemicals have been detected in treated wastewater effluents and surface waters that receive treated effluents. Many of these chemicals of emerging concern (CECs) originate from pharmaceuticals and personal care products that are used widely and that frequently are transported “down the drain” to a wastewater treatment plant (WWTP). ...


    By John Wiley & Sons, Ltd.

  • The anaerobic baffled reactor (ABR) treating communal wastewater under mesophilic conditions: a review

    A review concerning the anaerobic baffled reactor (ABR) treating communal wastewater under mesophilic conditions is presented. Existing studies indicate strong resilience of the reactor towards loading variations and shock-loads. The compartmentalisation of the ABR is a strongly stabilising factor with feed fluctuations being evened out across reactor chambers. Significant chemical oxygen ...


    By IWA Publishing

  • The The `Design for Autonomous Net-Zero Water Buildings` Project Funded By NSF

    The students at the University of Miami will know firsthand the importance of rethinking the way we handle wastewater and water with a Net-Zero water treatment system on site.   The project showed the viability and feasibility to take buildings off the water grid to provide water recycling and how it can be achieved without raising the cost of high quality water. The research team ...

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