ammonia removal Articles

  • Southern Water - Case Study

    Removal of ammonia, nitrate, COD/BOD and TSS: several projects with Paques The waterboard Southern Water UK and Paques already carried out seven projects and their partnership has a bright future to look forward to with more projects being planned. At Sewage Treatment Works (STW) Central, Paques already installed seven ASTRASAND® sand filtration installations, together with ...


    By Paques Technology B.V.

  • UK Waterboards - Case Study

    Meeting consent levels with continuous sandfiltration A number of sewage treatment works from Water Boards in the UK must meet stricter rules with regard to TSS levels and TSS related BOD. Many Water Boards opted for the installation of ASTRASAND® continuous sand filtration because it obtains the required effluent consent levels. Another great advantage is that the robust ...


    By Paques Technology B.V.

  • Nitrifying Bacteria - Koi Carp Ammonia Removal

    A range of nitrifying bacteria - Nitrosomonas (NS) and Nitrobacter (NB). NS converts Ammonia to Nitrite, NB converts Nitrite to Nitrate. Features: Fermented in-house by CBIO Available in a range of activity levels from 100 to 5000 mg/N/lt/hr Very short shelf-life, therefore fresh stocks always available Can be shipped world-wide at short notice ...


    By Cleveland Biotech Ltd.

  • Real-time PCR quantification of ammonia-oxidising bacteria in aerobic granular sludge and activated sludge influenced by pentachlorophenol

    An improved real-time PCR was developed to quantify Ammonia-Oxidising Bacteria (AOB) in aerobic granular sludge and activated sludge influenced by Pentachlorophenol (PCP), which ranged from 0 mg/L to 50 mg/L. With the increase of PCP concentration, there is no obvious variation of AOB quantification (p > 0.05) and COD removal rate in both types of sludge. However, the ammonia nitrogen removal of ...


    By Inderscience Publishers

  • Anglian Water selects Proam ammonia monitor

    Anglian Water (AWS) has selected the Proam ammonia monitor to provide continuous ammonia measurement on final effluent discharge where accurate and reliable measurement is required. One of the most recent installations is at Stanningfield WwTW situated near Bury St. Edmunds, in Suffolk. This is a small rural site receiving primarily domestic sewage. The site performs aerobic ...

  • Meihua - Case Study

    Over 90% ammonia removal at food ingredients processing plant Tongliao Meihua Biological Sci-tech Co., Ltd. is a wholly held subsidiary of Hebei Meihua Monosodium Glutamate Group Co., Ltd. Over 18,900 m3/d wastewater with ammonium concentration over 600 mg/l needs to be treated. Probably it is the highest ammonium load in one factory in the world, which means ...


    By Paques Technology B.V.

  • Municipal landfill leachate treatment by SBBGR technology

    The paper reports the results of a laboratory-scale investigation aimed at evaluating the performance of a periodic biofilter with granular biomass (SBBGR) for treating leachate coming from a mature municipal landfill. The results show that the SBBGR was able to remove roughly 80% of COD in leachate. The remaining 20% of COD were, therefore, presumably owing to the presence in the leachate of ...


    By Inderscience Publishers

  • Nitrogen removal from raw landfill leachate by an algae–bacteria consortium

    A remediation system for the removal of nitrogen from landfill leachate by a mixed algae–bacteria culture was investigated. This system was designed to treat leachate with minimal inputs and maintenance requirements, and was operated as an open semi-batch reactor in an urban greenhouse. The results of this study showed a maximum nitrogen removal rate of 9.18 mg N/(L·day) and maximum biomass ...


    By IWA Publishing

  • A synthetic biofilter media for ammonia (NH3) removal

    In this work, a patented biofilter media is used in treating air contaminated with ammonia (NH3). The data shows up to 200 ppm of NH3 can be removed with over 93% removal efficiency at 30 s Empty Bed Residence Time (EBRT). At the start–up conditions, the results also indicated that the humidifier can be ...


    By Inderscience Publishers

  • Nitrogen removal and recovery from human urine by struvite precipitation

    In this study, struvite precipitation of human urine was experimentally studied on both synthetic and actual urine samples. One of the main conclusions of the study was that removal of the ions constituting struvite from the solution was not in proportion with the stoichiometry of the solid and excess magnesium and phosphate removals varied from 2.5% to 4.8% on a molar basis. Redissolution of the ...


    By Inderscience Publishers

  • Pacific place contaminated groundwater treatment facility

    Location: Vancouver, B.C. Owner: B.C. Ministry of Environment, Lands and Parks Description: This $1.5 million facility is capable of treating 135 L/min of contaminated groundwater, removing primarily BTEX and PAH. Through aeration, pH adjustment, and polymer addition, flocculation and settling, the majority of the contaminants are removed. ...


    By NovaTec Consultants Inc.

  • The use of polyaluminium chloride for removing colour, COD and ammonia from semi-aerobic leachate

    This research examined various experimental conditions for application of Polyaluminium Chloride (PAC) for removing colour, COD and ammonia from semi-aerobic. The removals of colour, COD and ammonia were up to 93%, 56% and 32%, respectively, at an optimum dosage of 2000 mg/L PAC. Rapid and slow mixing speed played only a minor role in the removal efficiencies for colour, COD and ammonia. The ...


    By Inderscience Publishers

  • Application of nitrifying granules to improvement of nitrification activity in activated sludge process

    Nitrifying granules were used to improve nitrification performance of activated sludge process under high organic load. After inoculation of nitrifying granules, nitrification activity immediately increased, and kept for at least 70 days. Fluorescence in situ hybridisation analysis confirmed that nitrifying bacteria were retained in the granules even though nitrifying granules had been served in ...


    By Inderscience Publishers

  • Electrochemical treatment of residual ammonia nitrogen in biologically pretreated coking wastewater with three-dimensional electrodes

    The electrochemical oxidation of the residual ammonia nitrogen contained in biologically pretreated coking wastewater using three-dimensional electrode system was studied. The results show the Ti/RuO2/IrO2 anode plates and the coke have good surface characteristics for the purpose of this study. In addition, studies also show that the three-dimensional electrode system should be able to give a ...


    By IWA Publishing

  • Fate of Arsenic during Biological Treatment of High Strength Wastewater–Case Study

    The paper presents the results of treatability study on highly contaminated wastewater with phenols (300 mg/l), thiocyanate (210 mg/l), ammonia (800 mg/l) and arsenic up to 11 mg/l. The study was conducted in two sequencing batch reactors (SBRs) using biomass from coke plant. After two months of acclimatization the biomass was able to remove ammonia to below 1 mg/l and phenols and thiocynate ...

  • Competitive mechanism of ammonia, iron and manganese for dissolved oxygen using pilot-scale biofilter at different dissolved oxygen concentrations

    In this study, the competitive mechanism of ammonia, iron and manganese for dissolved oxygen (DO) in a biofilter was investigated, and a new start-up method of a biofilter for ammonia, iron and manganese removal was approved, which can effectively shorten the start-up period from 3–4 months to 51 days. The results demonstrated that when DO was sufficient (about 8 mg · L−1), ammonia, iron and ...


    By IWA Publishing

  • Application of PTFE membrane for ammonia removal in a membrane contactor

    The feasibility of a membrane contactor system for ammonia removal was studied. The mass transfer coefficient was used to quantitatively compare the effect of various operation conditions on ammonia removal efficiency. Effective removal of ammonia was possible with a Polytetrafluoroethylene (PTFE) membrane contactor system at all tested conditions. Among the various operation parameters, contact ...


    By IWA Publishing

  • Electron density-based transformation of trimethoprim during biological wastewater treatment

    This research investigated the biological transformation of trimethoprim (TMP). Partial TMP removal was observed in the presence of ammonia and toluene, and increasing the solids retention time from 20 days to 60 days improved TMP removal in both the nitrifying and heterotrophic bioreactors. Two TMP-related metabolites were identified, the first (5-(3,4,5-trimethoxybenzyl) pyrimidine-2,4-diamine, ...


    By IWA Publishing

  • Interactions between ammonia, iron and manganese removal using pilot-scale biofilters

    Pilot-scale biofilters treated with real groundwater were established to systemically investigate the interactions between ammonia, iron and manganese removal. When both of ammonia and manganese in influent were about 1 mg/L, they were quickly removed; but when manganese was above 3 mg/L, ammonia removal was affected significantly. When total iron was above 5 mg/L, the oxidization rate of ...


    By IWA Publishing

  • Ammonia removal from landfill leachate by struvite formation: an alarming concentration of phosphorus in the treated effluent

    This study examined the removal of ammonia nitrogen from the leachate of a landfill site using the chemical precipitation of struvite (MgNH4PO4.6H2O). This procedure achieved a reduction in the ammonia concentration that was higher than 99% when the molar ratio of 1.8:1.0:1.4 for Mg2+:NH4+:PO43− was adopted. The ...


    By IWA Publishing

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