wwtp upgrade Articles

  • Upgrading a municipal WWTP using AGAR® technology

    In view of EU directives for effluent discharge, it was required to upgrade the local sewage plant in the town of Marines, Valencia (Spain). The technology chosen for the project was AGAR® (Attached Growth Airlift Rector) of AqWise - Wise Water Technologies Ltd. La Entidad Pública de Saneamiento de Aguas Residuales (EPSAR) has promoted the implementation of the AGAR® system in the Valencian ...

  • Upgrade of a Publicly Sensitive WWTP to Seasonal Discharge into the Chesapeake Bay and to Land Application

    The Town of Centreville, Maryland owns and operates a wastewater collection, transmission and treatment facility that serves approximately 2,500 residents with a present average flow rate of 0.35 million gallons per day (MGD). This paper describes renovations to the facilities to provide a treatment and disposal system that would comply with the stringent effluent requirements associated with ...

  • Waste-to-Energy Upgrade for Chicken Processing WWTP - Case Study

    When one of Italy’s top chicken producers needed to increase production while lowering costs, it turned to Fluence for a waste-to-energy upgrade to its existing WWTP. When one of Italy’s top agro-food processors wanted to expand its operations, it faced some difficult challenges, including reducing operational costs and producing an effluent that would meet strict European Union ...


    By Fluence Corporation

  • The incorporation of variability and uncertainty evaluations in WWTP design by means of stochastic dynamic modeling: the case of the Eindhoven WWTP upgrade

    This paper illustrates how a dynamic model can be used to evaluate a plant upgrade on the basis of post-upgrade performance data. The case study is that of the Eindhoven wastewater treatment plant upgrade completed in 2006. As a first step, the design process based on a static model was thoroughly analyzed and the choices regarding variability and uncertainty (i.e. safety factors) were made ...


    By IWA Publishing

  • WWTP Marines, Spain upgrading a municipal WWTP using AGAR® technology A Case Study

    Case Study: Municipal plantStart up: May 2007Capacity: 380 m3/d Abstract In view of EU directives for effluent discharge, it was required to upgrade the local sewage plant in the town of Marines, Valencia (Spain). The technology chosen for the project was AGAR® (Attached Growth Airlift Rector) of AqWise - Wise Water Technologies Ltd. La Entidad Pública de ...

  • Aeration upgrade

    The community of Moscow is located in the northeast corner of Pennsylvania, approximately 10 miles southeast of Scranton. The current WWTP consists of an activated sludge system with three oxidation ditches in parallel operation. The total volume of all three ditches is 0.372 million gal per day (mgd), while the average size of each ditch is 180 ft by 24 ft by 6 ft deep. Previously, two of the ...

  • Case study: Municipal WWTP

    OverviewAn urgent improvement of the effluent quality of the old existing WWTP of Yavne was required by the Environmental Ministry of Israel. RequirementEffluent from the Yavne WWTP used to be discharged into a river which flows into the Mediterranean Sea. Years of inadequate treatment in two extensive ponds caused severe pollution. As a result, the Environmental ...

  • Newport WWTP Newport, WA

    In 2003 the city of Newport began a study of upgrading the city’s waste water treatment plant. Plant flows were increasing and the city wanted to process sewage from septage haulers handling recreational development in the area. Esvelt Environmental Engineering Company was selected to do the study and facility design. One of the first decisions made was rather than expand aeration basins, ...


    By BDP Industries

  • Municipal WWTP, Spain: A Case Study

    Overview The oxidation ditch configuration based wastewater treatment plant in Spain required a quick upgrade in order to comply with new inflow and quality requirements. Requirements The existing plant was operating with two parallel Oxidation Ditch modules with a flow rate of 600 m³/d each, and exhibited very poor nitrification capacity. The plant was to be ...

  • WWTP Georgia, USA - A Case Study

    Case Study: Municipal WWTPClient: Georgia – USAStart Up: 2009Capacity: 1,900 m3/d Overview The extensive municipal WWTP was required to upgrade its effluent quality to include extensive Ammonia removal. The project was conducted by Aqwise’s partner in North America, Siemens Water Technologies Corp. ...

  • Managing the NYC Watershed WWTP Upgrade Program- “Re-tooling an Entire Watershed’s Wastewater Treatment Infrastructure”

    New York City has the largest unfiltered surface water supply in the world. Within the 1,969 square miles tributary to the system's 19 reservoirs and three controlled lakes, are 106 non-City-owned permitted wastewater treatment plants, owned by a wide variety of private, public and municipal organizations. In order to avoid filtration of their 1.3 Billion gallon per day supply, New York City ...

  • WWTP Yavne, Israel A Case Study

    Case Study: Municipal WWTPClient: Municipality of Yavne, IsraelStart Up: September 2005Capacity: 6,000 m3/d Overview An urgent improvement of the effluent quality of the old existing WWTP of Yavne was required by the Environmental Ministry of Israel. Requirement Effluent from the Yavne WWTP used to be discharged into a river ...

  • Shall we upgrade one-dimensional secondary settler models used in WWTP simulators? – An assessment of model structure uncertainty and its propagation

    In WWTP models, the accurate assessment of solids inventory in bioreactors equipped with solid-liquid separators, mostly described using one-dimensional (1-D) secondary settling tank (SST) models, is the most fundamental requirement of any calibration procedure. Scientific knowledge on characterising particulate organics in wastewater and on bacteria growth is well-established, whereas 1-D SST ...


    By IWA Publishing

  • First Application of the Babe Process at ‘S-Hertogenbosch WWTP

    ABSTRACTProblems with meeting nitrogen standards at the ‘s-Hertogenbosch WWTP in The Netherlands led to an examination of a number of technologies to improve the performance. A new side stream process, called BABE, was selected after an feasibility study. In September 2005, the BABE process went into operation. The first-ever application of this innovative process has proved successful. The ...

  • Snake River WWTPS’s Disposal of Surplus Equipment Profits Buyers and Seller

     ABSTRACT Instead of selling the contents of the dewatering building by sealed bid for scrap prices, we marketed our equipment directly to end users, and received a significant amount of money for our rate payers. The buyers also saved by obtaining quality used equipment, which matched their existing equipment. KEYWORDS Used ...

  • Sharjah WWTP phase 6 - United Arab Emirates case study

    Background The existing treatment plant at Sharjah municipality needed an upgrade to handle increased fl ow and stringent demands. The target was to fi nd a solution without need for introducing any additional volumes and able to handle as much hydraulic load as possible on the existing clarifi ers. The Anox Kaldnes MBBR technology was chosen and the hydraulic capacity of the existing activated ...

  • Two-phase anaerobic digestion for class a biosolids at moccasin bend WWTP

    The Moccasin Bend Wastewater Treatment Plant (WWTP) provides treatment for the City of Chattanooga, Tennessee and the surrounding region. The City has completed upgrades to the solids handling facilities to treat and dewater the primary solids and waste activated sludge (WAS) from the WWTP. This paper summarizes the process to handle the primary solids and the start-up process. Primary solids ...

  • Low energy mixing to optimize anaerobic digestion at the Kitchener WWTP

    The existing Kitchener Wastewater Treatment Plant (WWTP) is a conventional secondary treatment facility, with a rated capacity of 122,745 mVd. The plant is comprised of two separate secondary treatment plants (Plant 1 and Plant 2) served by a common headworks facilities and primary clarifier facilities. Plant 1 was constructed in the early 1960s and Plant 2 was constructed in the mid-1970s. Both ...

  • Harlem, MT USA WWTP Uses FLUMP - 2013-case study

    Excessive lagoon sludge accumulation contributes to the poor performance of any treatment system.  Removing sludge from lagoon cells improves treatment and addresses violations in the Department of Environmental Quality enforcement action. The City of Harlem, Montana has a three cell partially mixed aerated lagoon system constructed in 1985.  The lagoon system discharges to the Milk ...


    By SRS Crisafulli, Inc.

  • Training: How to Remove Lagoon Sludge and Improve WWTP Outcomes

    What should you do when your town is under multiple and ongoing consent orders for violations of its Montana Pollutant Discharge Elimination System (MPDES) wastewater discharge permit? Excessive lagoon sludge accumulation contributes to the poor performance of any treatment system, particularly in winter. Removing sludge from the lagoon cells will improve treatment at the facility and ...


    By SRS Crisafulli, Inc.

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