Results 41 to 50 of about 295,308 (168)

Insight into the nitrogen accumulation in urban center river from functional genes and bacterial community.

open access: yesPLoS ONE, 2020
Along with urbanization, the intensified nitrogen pollution in urban rivers and the form of black-odor rivers has become one of the biggest concerns. Better understanding of the nitrogen transformations and microbial mechanisms occurring within urban ...
Lei Yu   +4 more
doaj   +1 more source

Removal efficiency of nitrogen and phosphorus in mariculture effluent by an immobilized algae-bacteria system

open access: yesAquaculture Reports
To explore the removal efficiency of nitrogen and phosphorus in mariculture effluent, Oocystis borgei and Algoriphagus marincola were used to construct an immobilized algae-bacteria system embedded in calcium alginate.
Junze Wu   +7 more
doaj   +1 more source

Engineering operational efficiency analysis of Anammox process for mature landfill leachate

open access: yesGongye shui chuli
The mature landfill leachate is a typical high ammonia nitrogen and low C/N wastewater, which is difficult to be treated for nitrogen removal. This study proposed a large-scale SBR-denitrification-Anammox treatment system for mature landfill leachate ...
GU Xiaoyang, WANG Xiaojun, CHEN Zhenguo
doaj   +1 more source

Optimizing nitrogen removal in vertical-flow constructed wetland: Effect of glucose addition and aeration duration

open access: yesGuan'gai paishui xuebao
【Objective】Constructed wetlands are an effective technique for removing various organic and inorganic pollutants from wastewater. This study investigates the impact of glucose addition and intermittent aeration duration on nitrogen removal efficiency in ...
WANG Mingkuan, TONG Juxiu, ZHANG Xia
doaj   +1 more source

Deciphering the ammonia transformation mechanism of a novel marine multi-stress-tolerant yeast, Pichia kudriavzevii HJ2, as revealed by integrated omics analysis

open access: yesApplied and Environmental Microbiology
Ammonia nitrogen posed a significant threat to aquatic animals in aquaculture environments, and the substantial potential of microorganisms in removing ammonia nitrogen had garnered considerable attention.
Kunmei Huang   +9 more
doaj   +1 more source

A Study on Nitrogen Removal from Molten Steel in Argon DC Glow Plasma

open access: yesTeshugang, 2007
The nitrogen removal from 0. 02% C molten steel in argon direct current (DC) glow plasma has been tested by a 25 kg vacuum induction furnace and the effect of argon glow plasma on kinetics of nitrogen removal from molten steel was studied. Results showed
徐芳泓   +3 more
doaj  

Influence of Temperature and Dissolved Oxygen on Nitrogen and Phosphorus Removal of Integrated Bioreactor [PDF]

open access: yesInternational Journal Bioautomation, 2017
An integrated biological membrane sewage treatment device has been designed based on the mechanism of microorganism nitrogen and phosphorus removal and the influence of temperature and dissolved oxygen on nitrogen and phosphorus removal of integrated ...
Chunying Wu, Lixiu Guo
doaj  

The quest for sustainable nitrogen removal technologies

open access: yesWater Science and Technology, 2003
In this paper the sustainability of current available and future nitrogen removal systems has been investigated. For the assessment of the sustainability six indicators were used; sludge production; energy consumption, resource recovery; area requirement and N2O-emission.
openaire   +2 more sources

Numerical Studies on Removal of Nitrogen and Phosphorus by Iron-Oxide Coated Zeolite in PHREEQC

open access: yesRenmin Zhujiang, 2021
This paper conducts the column experiments in the laboratory,simulates the removal of nitrogen and phosphorus in groundwater by natural zeolite and iron-oxide coated zeolite through the geochemical model PHREEQC,respectively,and predicts and compares the
LIANG Xingmei   +4 more
doaj  

Implementation of the Anammox Process for Improved Nitrogen Removal

open access: yesJournal of Environmental Science and Health, Part A, 2004
Stringent standards for nitrogen discharge necessitate the implementation of new systems for the sustainable removal of ammonium from wastewater. One of such systems is based on the process of anaerobic ammonium oxidation (Anammox), which is a new powerful tool especially for strong nitrogenous wastewaters.
Guven, D.   +7 more
openaire   +4 more sources

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