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.

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.

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.

Water Quality Change and Control Measures of Landscape River on West Campus of University of Jinan, China

2014 ◽  
Vol 675-677 ◽  
pp. 871-874
Author(s):  
Hai Yan Deng ◽  
Wei Ping Wang ◽  
Qiao Yi Xu
Keyword(s):  
Water Quality ◽  
Water Quality Monitoring ◽  
Ammonia Nitrogen ◽  
Control Measures ◽  
Quality Change ◽  
Arithmetic Means ◽  
Water Quality Simulation ◽  
Environment Quality ◽  
Water Quality Change ◽  
And Control

on the basis of inflow calculation and water quality monitoring of Jiazi river, the present quality situation of landscape river in University of Jinan was evaluated, with the indicator of nitrogen, by arithmetic means method which was usually used for environment quality evaluation of surface water. In addition, the river dilution mixture model was built for water quality simulation with the indicator of ammonia nitrogen. Moreover, the relevant control measures of aquatic plants restoration technologies and dam reconstruction were proposed to improve the landscape river water quality.

The Design of Water Intake System and Analysis of Water Quality Conditions of the Regional Energy System of Complex River Water Source Heat Pump

2015 ◽  
Vol 8 (1) ◽  
pp. 38-42
Author(s):  
Pengfei Si ◽  
Xiangyang Rong ◽  
Angui Li ◽  
Xiaodan Min ◽  
Zhengwu Yang ◽  
...  
Keyword(s):  
Water Quality ◽  
Energy Consumption ◽  
River Water ◽  
Heat Pump ◽  
Water Intake ◽  
Water Source ◽  
Energy System ◽  
Sediment Concentration ◽  
Regional Energy ◽  
Heat Pump Unit

As a realization of the energy cascade utilization, the regional energy system has the significant potential of energy saving. As a kind of renewable energy, river water source heat pump also can greatly reduce the energy consumption of refrigeration and heating system. Combining the regional energy and water source heat pump technology, to achieve cooling, heating and power supply for a plurality of block building is of great significance to reduce building energy consumption. This paper introduces a practical engineering case which combines the regional energy system of complex river water source heat pump, which provides a detailed analysis of the hydrology and water quality conditions of the river water source heat pump applications, and discusses the design methods of water intake and drainage system. The results show that the average temperature of cold season is about 23.5 °C, the heating season is about 13.2 °C; the abundant regional water flow can meet the water requirement of water source heat pump unit; the sediment concentration index cannot meet the requirement of river water source heat pump if the water enters the unit directly; the river water chemistry indicators (pH, Cl-, SO42-, total hardness, total iron) can meet the requirement of river water source heat pump, and it is not required to take special measures to solve the problem. However, the problem of sediment concentration of water must be solved.

Experimental investigation on water quality standard of Yangtze River water source heat pump

2012 ◽  
Vol 66 (5) ◽  
pp. 1103-1109 ◽  
Author(s):  
Zenghu Qin ◽  
Mingwei Tong ◽  
Lin Kun
Keyword(s):  
Water Quality ◽  
Surface Water ◽  
River Water ◽  
Heat Pump ◽  
Yangtze River ◽  
Water Source ◽  
Quality Standard ◽  
Heat Pumps ◽  
The Yangtze River ◽  
Water Conditions

Due to the surface water in the upper reaches of Yangtze River in China containing large amounts of silt and algae, high content of microorganisms and suspended solids, the water in Yangtze River cannot be used for cooling a heat pump directly. In this paper, the possibility of using Yangtze River, which goes through Chongqing, a city in southwest China, as a heat source–sink was investigated. Water temperature and quality of the Yangtze River in the Chongqing area were analyzed and the performance of water source heat pump units in different sediment concentrations, turbidity and algae material conditions were tested experimentally, and the water quality standards, in particular surface water conditions, in the Yangtze River region that adapt to energy-efficient heat pumps were also proposed. The experimental results show that the coefficient of performance heat pump falls by 3.73% to the greatest extent, and the fouling resistance of cooling water in the heat exchanger increases up to 25.6% in different water conditions. When the sediment concentration and the turbidity in the river water are no more than 100 g/m3 and 50 NTU respectively, the performance of the heat pump is better, which can be used as a suitable river water quality standard for river water source heat pumps.

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