Results 51 to 60 of about 295,308 (168)

Study on the removal of nitrogen and phosphorus pollutants in saline reclaimed water by Iris pseudacorus constructed wetland

open access: yesGongye shui chuli
To explore the removal of nitrogen and phosphorus pollutants in saline reclaimed water by wetland plants Iris pseudacorus,five systems(CW1-CW5) with different combinations of plants,substrates and sterilizers were constructed referring to wetland system ...
LI Zhaoying   +5 more
doaj   +1 more source

Nitrogen removal

open access: yes, 2023
Carlos M. Lopez-Vazquez   +2 more
openaire   +1 more source

Spectroscopic characterization of DOM and the nitrogen removal mechanism during wastewater reclamation plant.

open access: yesPLoS ONE, 2017
The performance of the Sha-he wastewater reclamation plant was evaluated in this study. To remove residual nitrogen after Anaerobic-Anoxic-Oxic (A2O) treatment, three multistage Anoxic-Oxic (A/O) were added to investigate the nitrogen removal efficiency ...
Lei Wang   +12 more
doaj   +1 more source

Nutrient removal performance from agricultural drainage by strengthening ecological ditches in hilly areas

open access: yesAgricultural Water Management
Agricultural drainage from catchment greatly impacts water quality in the hilly area due to high nitrogen concentrations in the central basin of Sichuan Province, China.
Jian Zhang, Min Yan, Xin Lu, Tao Wang
doaj   +1 more source

Treatment of high-concentration ammonia-nitrogen tungsten smelting wastewater by struvite precipitation method

open access: yesGongye shui chuli
Eutrophication of water bodies threatens the balance of ecosystems and poses potential environmental risks. Therefore, strengthening the control of water eutrophication is of great practical significance.
LUO Jun, HE Shaolang, YIN Xin
doaj   +1 more source

Operational characteristics of MABR for nitrogen and carbon removal in soybean processing wastewater

open access: yesGongye shui chuli
Excessive nitrogen in water bodies can lead to poisoning of aquatic organisms and eutrophication. The membrane-aerated biofilm reactor (MABR), as an emerging, efficient, and low-consumption wastewater nitrogen and carbon removal process, has garnered ...
WANG Yuqi   +12 more
doaj   +1 more source

Nitrogen Removal in a Vacuum Tank Degasser : An Investigation on the Nitrogen Removal Performance

open access: yes, 2019
The impending change of processes at SSAB Oxelösund due to the HYBRIT project, where the blast furnace and LD converter are to be replaced with an EAF will have a significant impact on the manufacturing of steel in Oxelösund. One issue that will arise is the nitrogen content in the steel.
openaire   +1 more source

Construction of an efficient ammonia nitrogen removal bacterial community and its application under weakly acidic conditions

open access: yesGongye shui chuli
Biological nitrogen removal technology has bottlenecks such as long start-up time and low efficiency in the process of high ammonia nitrogen wastewater treatment due to the specificity of wastewater, while the screened single high-efficiency nitrogen ...
CHEN Jiajing   +4 more
doaj   +1 more source

Aerobic denitrification in different dissolved oxygen conditions: nitrogen metabolism and electron distribution

open access: yesEnvironment International
Aerobic denitrification broadens the practical range of biological nitrogen removal processes in wastewater treatment. However, comprehensive examination of the impact of dissolved oxygen (DO) levels on the metabolic pathways of aerobic denitrifiers ...
Hong-Tao Shi   +8 more
doaj   +1 more source

Advancement in Anaerobic Ammonia Oxidation Technologies for Industrial Wastewater Treatment and Resource Recovery: A Comprehensive Review and Perspectives

open access: yesBioengineering
Anaerobic ammonium oxidation (anammox) technologies have attracted substantial interest due to their advantages over traditional biological nitrogen removal processes, including high efficiency and low energy demand.
Pradeep Singh   +8 more
doaj   +1 more source

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