Spatio-temporal Patterns of River Water Quality in the Semiarid Northeastern Brazil

2021 ◽  
Vol 232 (11) ◽  
Author(s):  
Letícia Lacerda Freire ◽  
Alexandre Cunha Costa ◽  
Iran Eduardo Lima Neto
Keyword(s):  
Water Quality ◽  
River Water ◽  
Temporal Patterns ◽  
River Water Quality ◽  
Northeastern Brazil ◽  
Spatio Temporal

Spatio-temporal analysis of the Karun River water quality

2018 ◽  
Vol 12 (3) ◽  
pp. 208
Author(s):  
Kumars Ebrahimi ◽  
Mojtaba Moravej ◽  
Iman Karimirad
Keyword(s):  
Water Quality ◽  
River Water ◽  
Temporal Analysis ◽  
River Water Quality ◽  
Karun River ◽  
Spatio Temporal

Spatio-temporal analysis of the Karun River water quality

2018 ◽  
Vol 12 (3) ◽  
pp. 208
Author(s):  
Mojtaba Moravej ◽  
Iman Karimirad ◽  
Kumars Ebrahimi
Keyword(s):  
Water Quality ◽  
River Water ◽  
Temporal Analysis ◽  
River Water Quality ◽  
Karun River ◽  
Spatio Temporal

Klamath River Water Quality and Acoustic Doppler Current Profiler Data from Link River Dam to Keno Dam, 2007

2008 ◽  
Author(s):  
Annett B. Sullivan ◽  
Michael L. Deas ◽  
Jessica Asbill ◽  
Julie D. Kirshtein ◽  
Kenna D. Butler ◽  
...  
Keyword(s):  
Water Quality ◽  
River Water ◽  
Acoustic Doppler Current Profiler ◽  
River Water Quality ◽  
Klamath River ◽  
Current Profiler ◽  
Profiler Data

MODELING THE ORGANIC REMOVAL AND OXYGEN CONSUMPTION BY BIOFILMS IN AN OPEN-CHANNEL FLOW

1994 ◽  
Vol 30 (2) ◽  
pp. 53-61 ◽  
Author(s):  
Shiyu Li ◽  
Guang Hao Chen
Keyword(s):  
Water Quality ◽  
Oxygen Consumption ◽  
River Water ◽  
Channel Flow ◽  
Diffusion Layer ◽  
Open Channel ◽  
Open Channel Flow ◽  
River Water Quality ◽  
Monod Kinetics ◽  
Organic Removal

A mathematical model is proposed to predict the removal of dissolved organic substances and the consumption of dissolved oxygen by attached biofilms in an open-channel flow. The model combines the biofilm equations with the conventional Streeter–Phelps type equations of river water quality by considering the mass transfer of organics and oxygen in the river water through the diffusion layer into the biofilm. It is assumed that the diffusion and reaction within the biofilm are of steady-state, and follow Monod kinetics. The model is solved numerically with a trial-and-error method. The simulation results of the model for an ideal case of river flow and biofilm show that the organic removal rate and oxygen consumption rate caused by the biofilm are greater than that by suspended biomass. The effects of diffusion layer thickness, flow velocity, and biofilm thickness on the change of river water quality are discussed.

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