nitrification Articles
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Application of high rate nitrifying trickling filters to remove low concentrations of ammonia from reclaimed municipal wastewater
The interference of ammonia with the chlorination process is a problem for many reclaimed water treatment plant operators. This paper presents the findings from a series of pilot experiments that investigated the efficacy of high flow rate nitrifying trickling filters (NTFs) for the removal of low concentrations of ammonia (0.5–3.0 mg N L−1) from reclaimed wastewater. Results showed that ...
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Pilot-scale study of vertical flow constructed wetland combined with trickling filter and ferric chloride coagulation: influence of irregular operational conditions
The aim of this study was to characterize the efficiency of an intensified process of vertical flow constructed wetland having the following particularities: (i) biological pretreatment by trickling filter, (ii) FeCl3 injection for dissolved phosphorus removal and (iii) succession of different levels of redox conditions along the process line. A pilot-scale set-up designed to simulate a ...
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Study about the influence of the pH and temperature in a biological wastewater trickling filter with beds of attached biomass to small stones case study
Preliminaries This service is carried out from the agreement reached by Surcis with an engineering company to conduct a study on the approach to analyze the influence of temperature and pH in a municipal wastewater treatment plant provided with a tricking filter process with small stones (as biomass carriers), where there is a very poor nitrification process performance. This biological process ...
By SURCIS, S.L.
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The impact of organic carbon on the performance of a high rate nitrifying trickling filter designed to pre-treat potable water
The application of nitrifying trickling filters (NTFs) to potable water treatment is less well understood than their application to wastewater treatment, particularly regarding the effect of low ammonia substrate concentrations and organic carbon loading on filter performance. A large pilot-scale NTF was operated under conditions that simulated the raw water quality of poorly protected catchments ...
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Development of a natural treatment system consisting of red ball earth and alfalfa for the post-treatment of anaerobically digested livestock wastewater
With the objective of developing a post-treatment process for anaerobically digested livestock wastewater, an innovative natural treatment system composed of two units is proposed. The first trickling filter unit further reduced biochemical oxygen demand and achieved a certain degree of nitrification. The second soil-plant unit was targeted at the removal and recovery of nutrients N, P and K. ...
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Can Trickling Filters Be Used in a BNR Process?
Nitrogen and phosphorus are nutrients in a wastewater treatment system. A Biological Nutrient Removal (BNR) process removes either portions of the influent total nitrogen through denitrification or portions of the influent phosphorus through anaerobic selection or both. In a BNR process, ammonia is ultimately converted to nitrogen gas, not just nitrate or nitrite. If you have requirements for ...
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Bacterial community involved in the nitrogen cycle in a down-flow sponge-based trickling filter treating UASB effluent
The bacterial community composition of a down-flow sponge-based trickling filter treating upflow anaerobic sludge blanket (UASB) effluent was investigated by pyrosequencing. Bacterial community composition considerably changed along the reactor and over the operational period. The dominant phyla detected were Proteobacteria, Verrucomicrobia, and Planctomycetes. The abundance of denitrifiers ...
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Heterotrophic nitrogen removal in Bacillus sp. K5: involvement of a novel hydroxylamine oxidase
An aerobic denitrifying bacterium isolated from a bio-trickling filter treating NOx, Bacillus sp. K5, is able to convert ammonium to nitrite, in which hydroxylamine oxidase (HAO) plays a critical role. In the present study, the performance for simultaneous nitrification and denitrification was investigated with batch experiments and an HAO was purified by an anion-exchange and gel-filtration ...
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Versatile and Reliable Bio-augmentation to Remain within Discharge Consent
Cleveland Biotech Ltd's Baccelerator® was launched two years ago. It has been employed in a wide variety of applications and has improved the biological performance of all the treatment works to which it has been attached. Examples of some of the uses to which the Baccelerator® has been put to include: - To degrade rogue organics that were impairing nitrification in a municipal ...
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Biological active groundwater filters: exploiting natural diversity
In the Netherlands, biological trickling filters without chemical pre-oxidation are generally applied to treat anaerobic groundwater, containing methane, iron, ammonium and manganese. Previous research showed that all compounds can be removed in one filter step and that not only the ammonia oxidation (by nitrification), but also the iron oxidation is often a biological process, despite oxygen ...
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Enhanced nitrogen removal in trickling filter plants
The Beaudesert Sewage Treatment Plant (STP), originally built in 1966 and augmented in 1977, is a typical biological trickling filter (TF) STP comprising primary sedimentation tanks (PSTs), TFs and humus tanks. The plant, despite not originally being designed for nitrogen removal, has been consistently achieving over 60% total nitrogen reduction and low effluent ammonium concentration of ...
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Treatability study of two hybrid-passive treatment systems for landfill leachate operated at cold temperature
Cold ambient temperatures can negatively affect the performance of passive and semi-passive landfill leachate treatment systems and decrease treatment efficiency. Cold temperature leachate treatment efficiencies were compared between a commercially available semi-passive treatment system and a passive peat and wood shaving biological trickling filter. The addition of an active fixed-film ...
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Energy performance indicators of wastewater treatment: a field study with 17 Portuguese plants
The energy costs usually represent the second largest part of the running costs of a wastewater treatment plant (WWTP). It is therefore crucial to increase the energy efficiency of these infrastructures and to implement energy management systems, where quantitative performance metrics, such as performance indicators (PIs), play a key role. This paper presents energy PIs which cover the unit ...
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Elimination of NH3 and odor from composting by biotrickling filter and preliminary exploration on molecular biology
A biotrickling filter was focused on treatment of odorous NH3 gas, along with volatile organic compounds (VOCs) and other odorous gases during cattle manure composting. The biotrickling filter could treat NH3, the main composition, with removal efficiencies of close to 100% because NH4+ was bio-oxidized in the biofilm to NO3− resulting final NO3− concentrations of about 1000 mg/L. Results of ...
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Diversity and dynamics of ammonia-oxidizing bacterial communities in a sponge-based trickling filter treating effluent from a UASB reactor
Changes in ammonia-oxidizing bacterial (AOB) population dynamics were examined in a new sponge-based trickling filter (TF) post-upflow anaerobic sludge blanket (UASB) reactor by denaturating gradient gel electrophoresis (DGGE), and these changes were linked to relevant components influencing nitrification (chemical oxygen demand (COD), nitrogen (N)). The sponge-based packing media caused strong ...
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The Rhizopur® process ten years on: a green solution for sewage treatment in small communities
Ten years ago the Rhizopur® process was conceived in order to treat sewage from small towns. Since 1999 when the first Rhizopur® plant was commissioned, the number of facilities has been growing steadily and today there are more than fifty Rhizopur® facilities in France. This process combines three existing technologies, i.e. biofilm, infiltration/percolation and mineralisation in constructed ...
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Sewer Collection System Bioaugmentation Reduces Influent Load and Improves Plant Performance
Abstract The effectiveness of In-Pipe Technology (IPT) patented sewer collection system engineered bioaugmentation on i) influent wastewater loads to wastewater treatment plant (WWTP), ii) WWTP performance, and iii) effluent quality, was a demonstrated at a domestic sequencing batch reactor (SBR) WWTP (Sewer District #20) in Suffolk County, Long Island, New York in collaboration with the Suffolk ...
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What is biological wastewater treatment?
Biological wastewater treatment harnesses the action of bacteria and other microorganisms to clean water Biological wastewater treatment is a process that seems simple on the surface since it uses natural processes to help with the decomposition of organic substances, but in fact, it’s a complex, not completely understood process at the intersection of biology and biochemistry. Biological ...
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