Results 11 to 20 of about 295,308 (168)

Effects of sulfamethoxazole on nitrogen removal and molecular ecological network in integrated vertical-flow constructed wetland

open access: yesEcotoxicology and Environmental Safety, 2021
Response of nitrogen removal efficiency and microbial interactions to organic pollution has been a major issue in wastewater treatment system. However, the nitrogen removal efficiency and interactions among microbial community under antibiotics press is ...
Shaoyong Lu   +7 more
doaj   +1 more source

Nitrogen removal in freshwater sediments of riparian zone: N-loss pathways and environmental controls

open access: yesFrontiers in Microbiology, 2023
The riparian zone is an important location of nitrogen removal in the terrestrial and aquatic ecosystems. Many studies have focused on the nitrogen removal efficiency and one or two nitrogen removal processes in the riparian zone, and less attention has ...
Fei Ye   +15 more
doaj   +1 more source

Electrochemical Removal of Nitrogen Compounds from a Simulated Saline Wastewater

open access: yesMolecules, 2023
In the last few years, many industrial sectors have generated and discharged large volumes of saline wastewater into the environment. In the present work, the electrochemical removal of nitrogen compounds from synthetic saline wastewater was investigated
Pasquale Iovino   +5 more
doaj   +1 more source

Simultaneous nitrification and denitrification based on internal circulation baffled reactor

open access: yes上海师范大学学报. 自然科学版, 2014
Nitrogen removal experiments were carried out by using an internal circulation baffled bioreactor (ICBBR). Nitrate, nitrite and ammonia were used as N source for nitrogen removal experiments. The ICBBR has high nitrogen removal capacity.
LU Xiaoya   +5 more
doaj   +1 more source

How do aeration mode and influent carbon/nitrogen ratio affect pollutant removal, gas emission, functional genes and bacterial community in subsurface wastewater infiltration systems?

open access: yesWater Science and Technology, 2023
This study investigated the influences of aeration mode and influent carbon/nitrogen ratio on matrix oxygen concentration, pollutant removal, greenhouse gas emission, functional gene abundances and bacterial community in subsurface wastewater ...
Lei Zhang   +5 more
doaj   +1 more source

Design aspects and plant species affect pollutant removal in Southern California stormwater biofilters

open access: yesBlue-Green Systems, 2020
We conducted a column study to better understand the relative effects of plants, design elements, and operating conditions on pollutant removal in stormwater biofilters in southern California under local conditions.
B. K. Winfrey   +4 more
doaj   +1 more source

Organic and nutrient removal during start-up period for domestic sewage treatment by an A/O mixed carrier system [PDF]

open access: yesE3S Web of Conferences, 2020
This study combined biofilm method and A/O process reasonably to form the biological treatment system. This experiment focused on the performance of the system for domestic sewage according to the determination of CODCr, ammonia nitrogen, total nitrogen,
Liao Wei, Li Hui-qiang, Yang Ping
doaj   +1 more source

Nitrogen Removal by HN-AD Bacteria Immobilized on Modified Absorbent Stone [PDF]

open access: yesChemical and Biochemical Engineering Quarterly, 2020
How to simplify the nitrogen removal process, reduce the cost and improve the efficiency has become an urgent problem to be solved. In this research, the isolated HNAD (heterotrophic nitrification and aerobic denitrification) bacteria were used to remove
W. Zhang, Z. Zhang, S. Wang
doaj   +1 more source

Low threshold for nitrogen concentration saturation in headwaters increases regional and coastal delivery

open access: yesEnvironmental Research Letters, 2020
River corridors store, convey, and process nutrients from terrestrial and upstream sources, regulating delivery from headwaters to estuaries. A consequence of chronic excess nitrogen loading, as supported by theory and field studies in specific ...
Noah M Schmadel   +7 more
doaj   +1 more source

Design methodologies to determine optimal staging of membrane-aerated biofilm reactors for mainstream treatment with anammox

open access: yesWater Science and Technology, 2022
Partial nitritation anammox (PNA) membrane-aerated biofilm reactors (MABRs) can be used in mainstream nitrogen removal to help facilities reduce their energy consumption.
Brett M. Wagner   +2 more
doaj   +1 more source

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