ammonia analyzer Articles

  • Assessing performance of on-line nitrate analyzers

    Traditionally, activated sludge processes were designed to remove organics and suspended solids from wastewater. The justification for including nitrogen control in wastewater treatment facilities began with the need to protect receiving waters from the increasing problem of eutrophication and hypoxia (low levels of dissolved oxygen in bottom waters, generally less than 2 mg/l). One of the ...

  • Gresham Wisconsin Bio-Dome Pilot Study 2010

    This article explores the results obtained from a mobile pilot unit in Gresham Wisconsin during the winter of 2010.  The pilot unit was installed to October 2010 and ran through April of 2011.  During the course of the study, the Bio-Dome was tested under various loading conditions and operating conditions.  Samples were taken for both the influent and effluent of the lagoon. ...

  • Comparative Study of Operation Performance and Microbial Community between Chembioflocculation (CBF) Process and Chemically Enhanced Primary Treatment (CEPT) Process

    Chem-bioflocculation (CBF) process was a new municipal wastewater treatment process developed in recent years. The flocculant dosage was one of the most important factors in operation optimization of chem-bioflocculation(CBF) treatment process. Five levels of flocculant dosage (PAFC) from 30mg/L to 100mg/L were applied to compare operational performance between CBF process and chemically enhanced ...

  • Accidental Releases Analysis for Toxic Aqueous Solutions

    As a result of the cluster rule for the control of the hazardous air pollutants, pulp and paper mills are in the process of further substituting chlorine with aqueous chlorine dioxide for their bleaching operations. In addition, ammonia aqueous solutions are applied by paper mills in various processes. An evaporation model including both heat and mass transfer for aqueous solutions has been ...

  • Accidental releases analysis for toxic aqueous solutions

    Abstract As a result of the cluster rule for the control of the hazardous air pollutants, pulp and paper mills are in the process of further substituting chlorine with aqueous chlorine dioxide for their bleaching operations. In addition, ammonia aqueous solutions are applied by paper mills in various processes. An evaporation model including both heat and mass transfer for aqueous ...


    By Trinity Consultants

  • A multi-parameter analyzer helps a Kentucky treatment plant step up to the plate and meet a new phosphorus limit in its permit

    In 2001, the Lexington Fayette Urban County Government West Hickman Creek Wastewater Treatment Plant in Nicholasville, Ky., was starting Phase II of its third upgrade since 1972, when the state imposed a phosphorus limit. Total phosphorus hovered around 6 mg/l, but the permit required 1 mg/l monthly average and 2 mg/l daily maximum from May through October. Engineers from Tetra-Tech, the ...


    By ChemScan, Inc.

  • Detection of moisture in ammonia gas

    Problem Statement As technologies advance, so does the request for ultra high purity ammonia. Ultra high purity (UHP) ammonia is used in the semiconductor industries, production of flat panel displays, and a number of other applications. Due to this rising interest in UHP ammonia, manufacturers are having to battle ammonia’s most prominent and damaging impurity--moisture. For ...


    By CIC Photonics

  • A novel hybrid GAX–ejector absorption refrigeration cycle with an air–cooled absorber

    A novel hybrid generator–absorber heat exchange (GAX)–ejector absorption refrigeration (hybrid GAX–E) cycle, with ammonia–water as working fluid, is proposed and analysed in detail. Thermodynamic models are developed for the hybrid GAX–E, hybrid GAX, simple GAX and single effect ammonia-water absorption refrigeration cycles. A comparison among the performances of these four cycles, at an absorber ...


    By Inderscience Publishers

  • Real-time control optimizes extended aeration processes - Case Study

    The population of Hillsborough County, Florida has doubled since the Valrico advanced wastewater treatment plant (AWTP) was built in 1990 to treat the sewage of several small communities west of the City of Tampa. When it began operation, the Valrico AWTP capacity was only 4 MGD; small when compared to Tampa’s 96 MGD Howard F. Curren AWTP located not far to the east. But Valrico serves as a ...


    By ChemScan, Inc.

  • Pasco County uses total life cycle costing to select chloramination analyzers - Case Study

    Pasco County, Florida Water Utilities serves its customers with water from its 58 permitted wells blended with the water supplied by its large regional supplier, Tampa Bay Water. In 2002 Tampa Bay Water converted to monochloramine disinfection because of its advantages over free residual chlorine. Monochloramine is more stable and better extends the disinfectant residual throughout the ...


    By ChemScan, Inc.

  • Scanning success - Case Study

    Scanning Success: A multiparameter analyzer helps a Kentucky treatment plant step up to the plate and meet a new phosphorus limit in its permit In 2001, the Lexington Fayette Urban County Government West Hickman Creek Wastewater Treatment Plant in Nicholasville, Ky., was starting Phase II of its third upgrade since 1972, when the state imposed a phosphorus limit. Total ...


    By ChemScan, Inc.

  • Pasco County Uses Total Life Cycle Costing to Select Chloramination Analyzers

    Pasco County, Florida Water Utilities serves its customers with water from its 58 permitted wells blended with the water supplied by its large regional supplier, Tampa Bay Water. In 2002 Tampa Bay Water converted to monochloramine disinfection because of its advantages over free residual chlorine. Monochloramine is more stable and better extends the disinfectant residual throughout the ...


    By ChemScan, Inc.

  • The Dangers of Uncalibrated Activated Sludge Simulation Packages

    ABSTRACTActivated sludge simulation packages are useful tools, but it can be dangerous to rely on them ifthey are used incorrectly. How dangerous? To determine potential pitfalls, we compared theactivated sludge tank volumes predicted by three simulation packages used directly out-of-theboxwithout calibration. We sought to identify the underlying reason for differences in predictedrequired ...

  • Source Characterization of Ammonia Accidental Releases for Various Storage and Process Conditions

    The U.S. Environmental Protection Agency (EPA) published the Risk Management Program (RMP) rule on June 20, 1996. Ammonia is exempted from this rule only if it is stored by farmers and not intended for resale. This chemical has significant industrial applications and may be stored or processed under a wide range of temperatures and pressures. Depending on process conditions, ammonia may be ...

  • Ultrasonic impact on bacterial population in sewage sample

    Nine samples of sewage sludge from different paper mills of New Delhi were treated with ultrasonic waves of two different frequencies, viz., 35 kHz and 130 kHz for different time periods (5, 10, 20 and 30 min). Treated sewage sludge was then evaluated with different parameters, viz., Chemical Oxygen Demand(COD), Biochemical Oxygen Demand (BOD), Total Nitrogen, Total Phosphorus, Total Ammonia and ...


    By Inderscience Publishers

  • Slurry acidification at Lauku Agro has begun - science is up next

    Slurry acidification has officially begun at Lauku Agro farm in Latvia.. The milestone was marked by an inauguration event where. stakeholders and other interested parties gathered to see the recently. acquired slurry acidification equipment. Slurry Acidification Techniques (SATs) can be divided to in-house, in-storage and in-field techniques. As a part of the investment plan of the Baltic ...


    By Biocover A/S

  • Analyzing hydrogen storage materials using ATR | Spectroscopy Solutions

    In a recent interview with Select Science®, Dr Nikola Biliškov described the work of his team at the Rudjer Bošković Institute (RBI) in Croatia. Working at a government-sponsored laboratory in Zagreb, the team are investigating new materials for the construction of solid-state hydrogen storage. Dr Nikola Biliškov works with infrared ...


    By Specac Limited

  • Nitrogen removal in a Sequencing Batch Biofilm Reactor: effect of carbon availability and intermittent aeration

    This study aimed to investigate the effects of carbon availability and intermittent aeration on nitrogen removal in a Sequencing Batch Biofilm Reactor (SBBR). The percentage of nitrogen removal in the SBBRs operating with dump fill and slow fill with optimum intermittent aeration was quite similar, 75.7% and 69.2%, respectively, indicating that intermittent aeration allowed a considerable energy ...


    By Inderscience Publishers

  • Nitrogen removal and ammonia-oxidising bacteria in a vertical flow constructed wetland treating inorganic wastewater

    Nitrogen removal performance and the ammonia-oxidising bacterial (AOB) community were assessed in the batch loaded 1.3 ha saturated surface vertical flow wetland at CSBP Ltd, a fertiliser and chemical manufacturer located in Kwinana, Western Australia. From September 2008 to October 2009 water quality was monitored and sediment samples collected for bacterial analyses. During the period of study ...


    By IWA Publishing

  • Quantitative and qualitative effects of bioaugmentation on ammonia oxidisers at a two-step WWTP

    Large waste water treatment plants (WWTP) often operate nitrification in two different process environments: the cold-dilute sewage is treated in the mainstream nitrification/denitrification system, while the high strength ammonia liquors from sludge dewatering are treated in a separate high temperature reactor (SBR). This study investigates transfer from nitrifier biomass into a two-stage WWTP, ...


    By IWA Publishing

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