ammonia recovery Articles

  • Model assisted startup of anaerobic digesters fed with thermally hydrolysed activated sludge

    This paper presents the use of the IWA ADM1 to predict and interpret results from two full-scale anaerobic digesters fed with thermal hyrolysate (waste activated sludge with a long upstream sludge age) from a Cambi hydrolysis process operating at 165°C and 6 bar-g. The first digester was fed conventionally—though intermittently, while the second was heavily diluted through a substantial component ...


    By IWA Publishing

  • Achieving Stringent Effluent Limits Takes a Lot of Energy!

    Enforcement of increasingly stringent effluent limits, and application of more sophisticated treatment processes for reduction of chemicals of potential concern, increases the energy consumed in municipal wastewater treatment processes. Energy consumption factors (ECFs) have been developed for wastewater treatment plant configurations based on the quantity of electrical energy used per cubic ...

  • Biotechnology for sustainable hydrometallurgy

    Untitled Document High rate bacterial catalyzed processes can serve to improve hydrometallurgical operations. These solutions are not only ...


    By Paques Technology B.V.

  • Thermal hydrolysis of the lipid and protein fractions of wastewater sludge: implications for digester performance and operational considerations

    ABSTRACT Thermal hydrolytic pretreatment of wastewater sludge followed by mesophilic anaerobic digestion poses significant benefits in terms of sludge minimization and pathogen reduction; however, high levels of volatile fatty acids (VFA) in digester effluent reveal an interruption in the efficient conversion of organic material to methane gas. Residual soluble chemical oxygen demand (COD) not ...


    By Cambi Group AS

  • Treatment of wastewater from anaerobic digestion

    The Client The customer is power plant which produces biogas from biomass and sewage farm, through anaerobic digestion and thermal recovery, located nearby Munich in Germany. The Client’s needs Biogas is produced by the fermentation of organic substances of animal and vegetal origin in absence of oxygen (anaerobic process). This process produces a ...


    By EVALED-Evaporator

  • Potential of nitrous oxide recovery from an aerobic/oxic/ anoxic SBR process

    Nitrous Oxide (N2O) is a kind of greenhouse gas which has a great influence on the global warming. And it is also a powerful oxidant in combustion reactions, which can improve the output power of biogas power generation from 5.7% to 7.3%. It is generally known that the amount of N2O emitted from wastewater treatment is 3% of the total global emissions of N2O. So it is of great significance for ...


    By IWA Publishing

  • KPDES Permit Compliance: Metals in Wastewater Effluent at Fort Knox

    ABSTRACT Prior to constructing a new FOTW, Fort Knox had a history of exceeding KPDES effluent limitations for ammonia and BOD. The new 6 MGD FOTW solved the problem, but metals exceedances became an issue. The exceedances could be linked to several factors: low water-quality based effluent limitations (WQBELs) on the new KPDES permit, high background concentrations of some metals, and high ...


    By Weston Solutions, Inc

  • Nutrient Recovery by Struvite Crystallization Process: Virginia Experience

     ABSTRACT The Hampton Roads Sanitation District's (HRSD), Nansemond Treatment plant (NTP) services the cities of Chesapeake, Portsmouth and Suffolk, Virginia. The plants treated effluent is discharged into the Chesapeake Bay watershed. The NTP was designed as a 30 MGD biological nutrient removal (BNR) plant with seasonal nitrification and utilizes anaerobic digestion for solids ...

  • Oil recovery reduces sewer cleaning

    Doskocil Food Service Company, a division of Foodbrands America, Hutchinson, Kan., produces 2 million pounds of pizza toppings a week. After cooking, the meat toppings are flash-frozen in one of two spiral freezers. Air currents within the freezer carry grease-containing vapors through the ammonia freezer coils, where they adhere and become lodged. Doskocil uses 1,600 gallons of water per hour to ...


    By Oil Skimmers, Inc.

  • High-Level Biological Phosphorus Removal Failure and Recovery

    ABSTRACTThe Durham Advanced Waste Treatment Facility AWTF treats wastewater to very low phosphorus levels (median effluent of less than 0.1 mg P/L) using a combination of biological phosphorus removal followed by tertiary treatment with alum. Historically, the biological phosphorus removal process has shown a relatively high level of instability. Testing was done during summer 2005 to determine ...

  • Membrane and System Design Considerations in Producing High Purity Water

    The use of membrane technology to produce water of greater and greater purity is rapidly evolving under the pressure of new product quality specifications, including those of the pharmaceutical and beverage industries. Membrane technology is well suited to achieving multi-component water specifications, given the fundamental nature of the separation process. Meeting a resistivity or conductivity ...

  • Flood recovery project - Case Study

    Greener Waste Technology has been working with a utility company to combat the effects of flooding on a filter bed works. The works in question is low lying and next to a river which recently burst its embankment and flooded the filter beds entirely. The flood distributed large volumes of silt and mud onto the filters blocking the beds and starving the indigenous bacteria population of oxygen ...


    By Greener Waste Technology

  • How NoMonia Works to Treat or Remove Your Ammonia - Case study

    Most water utilities should have effective treatment methods for the filtration of arsenic, iron and manganese from drinking water sources. However, as ammonia becomes increasingly concentrated in groundwater throughout the U.S., many utilities around the country are searching for ways to successfully treat the contaminant, while also meeting U.S. Environmental ...

  • An Honest Assessment of the Environmental Biotech Industry

    Dr Tony Brooke of CBIO gives an honest opinion of the current state of the Environmental Biotechnology industry and how it is perceived by potential customers What is the role targeted bioaugmentation has in optimising treatment plant operation? Risking an unfair ...


    By Cleveland Biotech Ltd.

  • Impressive test performance, Peter Minting WWT

    Abstract: Southern Water has bought a dozen in-situ ammonia monitors from Envitech, following a successful installation at Fullerton STW. Peter Minting looks at a possible way to cut lab ...


    By Envitech Ltd.

  • Mathry WTP - Welsh Water

    The Problem Welsh Water’s existing conventional activated sludge WWTW at Mathry could not meet a new EPA ammonia consent. This was due to high population increases in the summer due to transient tourism, and the associated peaks in ammonia ...


    By Clarity Authoring

  • Coke Manufacturing Industry - Pollution Prevention Guidelines

    Introduction Pollution Prevention Guidelines to provide technical advice and guidance to staff and consultants involved in pollution-related projects. The guidelines represent state-of-the-art thinking on how to reduce pollution emissions from the production process. In many cases, the guidelines provide numerical targets for reducing pollution, as well as maximum ...


    By The World Bank

  • Copper Smelting Industry - Pollution Prevention Guidelines

    Introduction Pollution Prevention Guidelines to provide technical advice and guidance to staff and consultants involved in pollution-related projects. The guidelines represent state-of-the-art thinking on how to reduce pollution emissions from the production process. In many cases, the guidelines provide numerical targets for reducing pollution, as well as maximum ...


    By The World Bank

  • Biological Dryers Improve Performance/Economics of Biomass Projects

    Greater use of biomass for power generation is often constrained by the high moisture content of these fuels. As water contert increases, heating value drops, hampering the economics of the biomass utilization. Dryers can be used, but most traditional dryer desigrs reqjlrea large amount of energy to dry the biomass and are expensive to maintain and operate. As a result, much of the organic waste ...


    By Wright Tech Systems Inc.

  • Cd(II) Mediated Inhibition of Nitrosomonas Europaea is Linked to Oxidative Stress and is Impacted by Physiological State and Growth Mode

    ABSTRACTIn this study, we systematically investigated the impact of physiological state and growth mode on the biokinetics and cadmium mediated inhibition of monocultures of Nitrosomonas europaea strain 19718. During batch growth and in the absence of an inhibitor, specific ammonia oxidation activity, measured as specific oxygen uptake rate, (sOUR), increased during exponential ...

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