Predication of River Water Quality Based on Gray Dynamic Model Group in Wenchuan Earthquake Disaster Area

2013 ◽  
Vol 316-317 ◽  
pp. 599-605
Author(s):  
Feng Qian ◽  
Wei Lin ◽  
Bo Hu ◽  
Jing Jun Liu ◽  
Ming Biao Xiong
Keyword(s):  
Water Quality ◽  
River Water ◽  
Wenchuan Earthquake ◽  
Water Loss ◽  
River Water Quality ◽  
Total Hardness ◽  
Earthquake Disaster ◽  
Soil And Water Loss ◽  
Disaster Area ◽  
Soil And Water

“5.12 Wenchuan earthquake”triggered floods, landslide, collapse and secondary geological disaster, trigger a new soil and water loss, having the significant influence to the local river water quality.This article through the statistical analysis of minjiang river and jiangyou wenchuan, beichuan station 2006 ~ 2011 water conditions material, discussing the before and after the earthquake disaster areas of river water quality change characteristics. The results showed From ammonia nitrogen source analysis, urban sewage and industrial waste water, agricultural non-point source pollution and earthquake that triggered the new soil and water loss is the main pollution source. Based on the hydrological site total hardness concentration prediction, we can find wenchuan earthquake disaster area total hardness concentration significantly increase trend.

Analysis of the Relationship between River Flow and Water Quality before and after the Wenchuan Earthquake

2013 ◽  
Vol 664 ◽  
pp. 164-168
Author(s):  
Feng Qian ◽  
Bo Hu ◽  
Jing Jun Liu ◽  
Wei Lin ◽  
Ming Biao Xiong
Keyword(s):  
Water Quality ◽  
River Water ◽  
Wenchuan Earthquake ◽  
River Flow ◽  
Nitrogen Concentration ◽  
Ammonia Nitrogen ◽  
Quality Parameters ◽  
Total Hardness ◽  
Before And After ◽  
The Relationship

“5.12 Wenchuan earthquake”triggered floods, landslide, collapse and secondary geological disaster, trigger a new soil and water loss, having the significant influence to the local river water quality.This article through the statistical analysis of jiangyou, beichuan station 2006 ~ 2011 water conditions material, discussing the before and after the earthquake disaster areas the river flow change on the influence of river water quality. The results showed that the affected areas of ammonia nitrogen content after the earthquake are more than that before the earthquake content .with flow increased, ammonia nitrogen concentration is higher, flow is low, the water quality parameters of concentration decreased; The total hardness reduced during the earthquake, with flow increased, total hardness concentration is reduced, is negatively correlated; The change of flow to fluoride content effect is not obvious.

Analysis of Water Quality Change before and after the Wenchuan Earthquake

2012 ◽  
Vol 260-261 ◽  
pp. 674-678
Author(s):  
Feng Qian ◽  
Bo Hu ◽  
Jing Jun Liu ◽  
Ming Biao Xiong ◽  
Heng Hu
Keyword(s):  
Water Quality ◽  
River Water ◽  
Wenchuan Earthquake ◽  
Water Source ◽  
Ammonia Nitrogen ◽  
Total Hardness ◽  
Quality Change ◽  
Water Quality Change ◽  
Change Characteristics ◽  
Before And After

“5.12 Wenchuan earthquake”triggered floods, landslide, collapse and secondary geological disaster, trigger a new soil and water loss, having the significant influence to the local river water quality.This article through the statistical analysis of minjiang river and jiangyou wenchuan, beichuan station 2006 ~ 2011 water conditions material, discussing the before and after the earthquake disaster areas of river water quality change characteristics. The results showed that the affected areas of ammonia nitrogen content after the earthquake are more than before the earthquake content .The fluoride content before earthquake overtop that after earthquake in Wenchuan water source .The total hardness of water quality presents upward trend in disaster area after earthquake, and the total hardness of water quality in 2010 and 2011 is greater then that before earthquake. The total iron content is not affected by the earthquake, before and after the earthquake did not appear obvious difference.

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.

scholarly journals Relationship between distribution of phytoplankton with Cimanuk river water quality

2021 ◽  
Vol 1098 (5) ◽  
pp. 052020
Author(s):  
L S Mulyani ◽  
R Mardiani ◽  
C Ardiana ◽  
S Nurkamilah
Keyword(s):  
Water Quality ◽  
River Water ◽  
River Water Quality
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