On-site Wastewater Articles

  • 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 This state-of-the-art system replaced outdated chemical/physical treatment at the company.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

  • 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

  • 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

  • ESA Entsorgungsservice relies on advanced evaporator technology

    ESA Entsorgungsservice GmbH & Co. KG was founded in 1998 and specialises in the treatment of oily waste. Five years ago, owner Frank Ackermann moved the company to Nattheim, Germany, and invested in a state-of-the-art environmentally-friendly treatment system. He speaks about his experience in this interview. Mr Ackermann, what were the reasons behind your move? ...


    By H2O GmbH

  • 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

    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

  • 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 ...

  • Application of nano-silver coated granular activated carbon for inactivation of septic tank effluent

    On-site sanitation systems such as cesspools and septic tanks are widely used in most developing countries. These systems primarily aim to collect and treat toilet wastewater or blackwater. Although septic tanks are commonly used in non-sewered areas, their effluents are still rich in pathogens and other pollutants. The practice of direct discharge of septic tank effluents into the surrounding ...


    By IWA Publishing

  • Aluminosilicate-based adsorbent in equimolar and non-equimolar binary-component heavy metal removal systems

    Cadmium (Cd) and lead (Pb) are toxic heavy metals commonly used in various industries. The simultaneous presence of these metals in wastewater amplifies the toxicity of wastewater and the complexity of the treatment process. This study has investigated the selective behavior of an aluminosilicate-based mesoporous adsorbent. It has been demonstrated that when equimolar quantities of the metals ...


    By IWA Publishing

  • Sorption of microconstituents onto primary sludge

    The presence of microconstituents (MCs) in the environment has become an emerging concern to scientists and engineers. Sorption is one of the important removal mechanisms for MCs in wastewater treatment plants (WWTPs) since there is significant sludge production. The purpose of this study is to explore sorption kinetics and isotherms of MCs onto primary sludge. Three MCs, bisphenol-A (BPA), ...


    By IWA Publishing

  • Kinetics of organic matter and ammonia removal in horizontal reed beds treating wastewater in Nepal

    In Nepal, both horizontal bed and vertical bed subsurface flow constructed wetlands have been used for wastewater treatment. However, these units were designed based on the empirical findings from other countries. The rational design criteria developed so far has some limitations as the performance of the units is sensitive to the behaviour of the microorganisms, climatic conditions and other ...


    By IWA Publishing

  • A new approach to implementing decentralized wastewater treatment concepts

    Planners and decision-makers in the wastewater sector are often confronted with the problem of identifying adequate development strategies and most suitable finance schemes for decentralized wastewater infrastructure. This paper research has focused on providing an approach in support of such decision-making. It is based on basic principles that stand for an integrated perspective towards ...


    By IWA Publishing

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