Advanced Nitrogen-Reducing Treatment Systems
Types of advanced nitrogen removal technologies available include: Aerobic Treatment Units ATUs are made of fiberglass, polyurethane or concrete. Unlike conventional systems, ATUs introduce air into the …
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Bibliometric Analysis of Research Trends Related to Carbon …
The low organic carbon content of municipal wastewater reduces the effectiveness of biological nitrogen removal. Herein, we reviewed recent trends in carbon sources for nitrogen removal during wastewater treatment. A bibliometric analysis using the Science Citation Index Expanded database from the Web of Science was performed …
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Stimulation on microbial nitrogen metabolism by iron under …
Over 150 days of detection, nitrogen transformation differed in various groups, revealed by alterations of NH 4 +-N, NO 3 −-N and TN in effluent.In conventional nitrogen cycling processes, aerobic nitrification was the dominant step for NH 4 +-N transformation [42].NH 4 +-N removal was inhibited significantly during 0–60 d in CW2 compared to …
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Effective Biological Nitrogen Removal Treatment …
Abstract. Discharge of nitrogenous components to water bodies can cause eutrophication, deterioration of water quality, toxicity to aquatic life, and pose a potential …
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Denitrifying biofilm processes for wastewater
Autotrophic denitrification is a cost-effective process for nitrogen removal with reduced inorganic compounds acting as the electron donor, such as hydrogen and sulfur. Methane could also be used directly as an electron donor to drive denitrification in the methane-based denitrification process. While the controlled biofilm-based systems are ...
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Advanced techniques to remove phosphates and nitrates …
To remove both phosphorus and nitrogen simultaneously from the drain liquids, we can use the university of cape town (UCT) concept, Bardenpho, and Phoredox systems. The university of cape town process is the most effective method for the removal of phosphorus and nitrogen simultaneously (Ruzhitskaya and Gogina 2017 ).
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Bioretention for removal of nitrogen: processes, …
However, the efficiency of nitrogen removal in the bioretention system is unstable, owing to the different chemical properties of various forms of nitrogen and the limitations of current bioretention system for nitrogen transformation. ... Wan Z, Li T, Liu Y (2018) Effective nitrogen removal during different periods of a field-scale ...
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Effective nitrogen removal in a granule-based partial …
Effective nitrogen removal was achieved with an average effluent TN concentration of 8.74 mg/L when influent TN concentration and COD/TN ratio were 42.56 mg/L and 1.52, respectively.
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Elemental sulfur-driven autotrophic denitrification for advanced
Elemental sulfur-driven autotrophic denitrification (S 0 dAD) was applied in a packed-bed reactor to remove residual nitrogen from raw mature landfill leachate after partial nitritation and anaerobic ammonium oxidation (anammox) (PN/A) pretreatment. The performance and stability of S 0 dAD were evaluated with different NO x − (nitrate and …
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Reducing the Impact of Septic Systems Through Advanced Nitrogen
Septic systems are an effective means of treating wastewater when they are properly designed, constructed and maintained. Conventional systems are designed from a public health perspective and have been widely used since the 1940s to remove pathogens and protect human health. About 30% of Florida's population relies on septic systems, …
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Comparison of various technologies used to eliminate nitrogen …
Nitrogen removal by autotrophic microorganisms would be preferable since it leaves the organic matter for methanogenic bacteria during wastewater treatment. ... Therefore, it is important to optimize the dosage of an adsorbent for achieving effective NH 4 + removal. Wastewater usually includes coexisting ions such as Na +, K +, ...
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Biological Processes for Nutrient Removal | SpringerLink
The biological nitrogen removal via nitrification–denitrification is the most commonly used technique for the removal of nitrogen from wastewater during the secondary treatment. ... biological or combination of both treatments. The physico-chemical phosphorus removal techniques are effective; however, these methods require chemical …
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Biological Nitrogen Removal From Domestic Wastewater
The dynamics of the microbial community and functional taxa related to nitrogen (N) removal biogeochemical processes can be important to the development of new cost-effective processes in ...
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A review on new ammonium oxidation alternatives for effective nitrogen
As a highly oxidizing ion, ammonium (NH 4 +) is easily reduced by other reducing substances.Recently, NH 4 + oxidation coupled with Fe 3+, SO 4 2−, and Mn 4+ reduction (i.e., Feammox, Sulfammox, and Mnammox) has been confirmed and their collaborative roles in removing NH 4 + have been revealed in several studies. However, …
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Nitrogen Reducing Technologies for Onsite Wastewater …
However, removal of nitrogen is a complex process. Adding a nitrogen removal process to existing onsite sewage systems requires detailed planning, design and operational oversight. Significant research has been conducted for nitrogen removal and a wide variety of products have been promoted as effective nitrogen removal processes.
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Technologies for biological removal and recovery of …
Various physico-chemical factors affecting the efficiency of the biological nitrogen removal methods are suggested. Abstract. Keywords. Nitrogen. Nitrate. …
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A review on upgrading of the anammox-based nitrogen removal …
The anammox-based nitrogen removal process in the nitrogen circulation illustrated in Fig. 1 (U.S. Environmental Protection Agency, 1993, Lu et al., 2020, Matějů et al., 1992, Zhang et al., 2017) can reduce oxygen and chemical oxygen demand (COD) by up to 58 % and 90 % respectively, when compared with conventional technologies. In …
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Removal of nitrogen from wastewater using microalgae and …
This paper presents an overview on nitrogen removal from wastewater using different types of systems including microalgae solo and microalgae–bacteria consortia systems. The parameters that affect system performance, as well as well as biomass harvesting methods are also discussed. 1. Introduction.
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Biological nitrogen removal from low carbon wastewater
Nitrogen has traditionally been removed from wastewater by nitrification and denitrification processes, in which organic carbon has been used as an electron donor during denitrification. However, some wastewaters contain low concentrations of organic carbon, which may require external organic carbon supply, increasing treatment costs. As …
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A Comprehensive Review on Wastewater Nitrogen …
The results showed that when the C/N was ten, the nitrogen removal efficiency was optimum, and the average removal of NH 4 + and total nitrogen were 96.54% and 86.1%, respectively. On the contrary, …
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Recent advances in simultaneous nitrification and …
Conventional biological nitrogen removal process is widely adopted for its reliable and effective nitrogen removal. However, its high operational and capital costs have led to the development of ...
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What is the Best Biological Process for Nitrogen …
A review. Nitrogen removal from wastewater via anaerobic ammonium oxidn. (anammox)-based process has been recognized as efficient, cost-effective and low energy alternative to the conventional nitrification and denitrification processes.
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Nitrogen removal from wastewater: A …
The combination of PN/DN and PN/ANAMMOX processes have been found to be effective for removal of nitrogen by ~90% in a two-stage system but leave effluent …
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Use of the nitrogen/ oxygen isotope fractionation
The activated sludge-driven nitrogen removal system relying solely on the nitrogen removal effect cannot achieve precise regulation of nitrogen removal performance in wastewater treatment plants, and it is also necessary to combine with other means for effective nitrogen removal with activated sludge in wastewater plants.
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Bioretention for removal of nitrogen: processes, …
However, the efficiency of nitrogen removal in the bioretention system is unstable, owing to the different chemical properties of various forms of nitrogen and the …
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Achieving simultaneous removal of nitrogen and
Effective removal of nitrogen and phosphorus from a black-odorous water by novel oxygen-loaded adsorbents. 2023, Chemical Engineering Journal. Show abstract. Black-odorous water, caused by hypoxia and overloading of nitrogen and phosphorus, is ubiquitous in global urban rivers. In this study, we developed oxygen-loaded adsorbents …
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A review of anammox-based nitrogen removal technology: …
A large amount of energy consumption promotes the continuous development of traditional nitrogen removal technology. Anaerobic ammonium oxidation (anammox) has been considered one of the most effective nitrogen removal processes since it was proposed in the Netherlands in 1990 (Lackner et al., 2014).
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Removing Nitrogen From Wastewater | Fluence
Anammox is an energy-efficient, microbiologically mediated process for nitrogen removal. The bacteria in the process oxidize ammonium anoxically, with nitrite as electron acceptor, to create nitrogen gas. Anammox is suitable for treatment of high-ammonium, low-organic-load wastewater. Further study is needed before broadening its …
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A rational strategy of combining Fenton oxidation and …
Effective removal of nitrogen from coking wastewaters is a great challenge, since conventional biological technologies commonly suffer from concentrated bio-toxic components such as phenolic compounds and thiocyanide (SCN-). This study has successfully developed a novel ternary process for efficiently removing nitrogen from a …
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Effective Biological Nitrogen Removal Treatment Processes …
Abstract Discharge of nitrogenous components to water bodies can cause eutrophication, deterioration of water quality, toxicity to aquatic life, and pose a potential hazard to human and animal health. Biological nitrogen removal can remove nitrogenous components via conversion to harmless nitrogen gas with high efficiency and relative low …
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