scholarly journals Study on Calculation Method of Contribution Rates of Water Pollution of Trans-Boundary Rivers

2021 ◽  
Author(s):  
Xianzhong Zeng ◽  
Shouning Hao
Keyword(s):  
Water Pollution ◽  
Mathematical Model ◽  
Water Quality ◽  
Main Stream ◽  
Research Subject ◽  
Important Research ◽  
Quality Model ◽  
Study Case ◽  
Pollution Impact ◽  
Pollution Loads

The calculation of the contribution rates of the upstream and downstream administrative regions to water pollution of trans-boundary rivers is an important research subject. In this paper, a method based on the water quality mathematical model was proposed, which includes three steps: (1) Establishment of a model for a trans-boundary river; (2) Analysis of the pollution impact on the water quality at the control sections of the trans-boundary river; and (3) Calculation of the contribution rates to water pollution of the trans-boundary river. Taking Zhaosutai River, a trans-boundary river flowing through Jilin and Liaoning Provinces, as the study case, the contribution rates of these two provinces to water pollution of the river were determined by this method. The results showed that for the COD concentrations in the Control Sections of Laoqujiadian, Qijiazi and Dasijiazi of the main stream in January 2017, the contribution rates of the upstream pollution loads we 96.2%, 81.0% and 70.5%, respectively. The method of calculating the contribution rates to water pollution of trans-boundary rivers based on the mathematical water quality model proposed in this paper quantitatively can be used to identify the responsibilities of upstream and downstream administrative regions for water pollution of trans-boundary rivers.

Application of Various Space Dimensional Water Quality Model in Different Areas

2014 ◽  
Vol 1010-1012 ◽  
pp. 456-461 ◽  
Author(s):  
Jia Zhou ◽  
Li Liu ◽  
Li Min Ma
Keyword(s):  
Water Pollution ◽  
Water Quality ◽  
Pollution Control ◽  
Water Quality Model ◽  
One Dimension ◽  
Quality Model ◽  
Efficient Tool ◽  
Quality Planning ◽  
Dimension One ◽  
Control Water

The water quality model is an efficient tool for water pollution control, water quality planning and environmental management. In accordance with the need of prediction, analysis and management of water quality, this article presents different application conditions for various water quality model, including zero-dimension, one-dimension, two-dimension and multidimensional. Then the application of water quality model in different areas are summarized here.

scholarly journals Spatio-Temporal Variation of Heavy Metal Pollution during Accidents: A Case Study of the Heshangshan Protected Water Area, China

2019 ◽  
Vol 11 (24) ◽  
pp. 6919 ◽  
Author(s):  
Xiaowen Ding ◽  
Yue Tan ◽  
Baodeng Hou
Keyword(s):  
Water Pollution ◽  
Water Quality ◽  
Iron Concentration ◽  
Social Economy ◽  
Temporal Variations ◽  
Water Area ◽  
Quality Model ◽  
Accident Scenario ◽  
Quality Of Water ◽  
Spatio Temporal

Recently, water environmental accidents have occasionally occurred which have had wide-ranging influences, long durations and are difficult to deal with. The development of the social economy, the acceleration of industrialization, the huge discharge of industrial wastewater and the occasional occurrence of ship transportation accidents pose serious threats to the water quality of water inlets and protected water areas. This article applied the two-dimensional water quality model, used a GIS platform and FORTRAN language, and predicted spatio-temporal variations of the iron concentration during a water pollution accident. This research selected the water inlet of Heshangshan Water Plant and the Heshangshan protected water area as the research objective, and assumed a water pollution event had occurred. It was suggested that we should take corresponding emergency measures and relevant solutions to deal with the bad effects of water pollution accidents. The processes mainly included the selection of the study area, the determination of the equation to be used, parameters determination, as well as the identification of the accident scenario and source. The durations of the iron concentration exceeding the standard at the water inlet were 12–18 min and in the protected water area were 16–36 min in four water periods after the accident. In addition, the durations taken for the iron concentration to decrease to the background value in the protected water area were 18–38 min after the accident in four water periods in the accident scenario. Relevant departments should take some contingency measures to avoid fetching water from the intake after the accident within 40 min after the accident and the relevant staff can cancel the warning 40 min after the accident.

Utilizing GIS in the Development of Water Quality River Modeling for Penchala River, Malaysia

2014 ◽  
Vol 580-583 ◽  
pp. 2078-2081
Author(s):  
Faridah Othman ◽  
Alaa Eldin Mohamed Elamin ◽  
Siti Azireen Hezza Azahar ◽  
Siti Asiah Muhammad
Keyword(s):  
Water Pollution ◽  
Water Quality ◽  
Urban Areas ◽  
Catchment Area ◽  
Storm Water ◽  
Rapid Manufacturing ◽  
Quality Model ◽  
Digital Map ◽  
River Modeling

The quality of river water has been an important issue, due to its significant important function to the human being. In Asia, Malaysia is considered as one of the most speedily urbanizing countries and it’s facing huge environmental challenges. An increased pressure on urban areas has been generated by rapid manufacturing especially in the Penchala River Basin. Penchala River originates from Kiara Hill and passes through several important townships as it flows through residential and industrial areas before meeting with Klang River. Although the river is relatively short, with an approximately 12 km in length with a catchment area of 28 kilometer square, this catchment is noted to be under environmental stress emanating from storm water pollution, solid waste, sedimentation and micro-pollutant. To study the water pollution issue, it is always best if it is tied up with the geographic information system. The objective of this study is to use the GIS for preparing and organizing the geometric data to satisfy the water quality model requirements. As a result of this study, a digital map for Penchala River has been created.

Predictions of ice-cover development in streams and its effect on dissolved oxygen modelling

1979 ◽  
Vol 6 (2) ◽  
pp. 197-207 ◽  
Author(s):  
E. McBean ◽  
G. Farquhar ◽  
N. Kouwen ◽  
O. Dubek
Keyword(s):  
Mathematical Model ◽  
Water Quality ◽  
Dissolved Oxygen ◽  
Prediction Model ◽  
Data Input ◽  
Quality Model ◽  
Two Stage ◽  
Second Stage ◽  
Series Of Experiments ◽  
Ice Edge

A two-stage mathematical model is developed for predicting dissolved oxygen levels in ice-covered rivers. The first stage of the model is a prediction model for ice-edge progression as a function of time, and the second stage consists of an extrapolation of a widely used 'summer condition' water-quality model. The results of a series of experiments, both field and laboratory-based, which served as data input generators and calibration testing of the model, are provided.Briefcase-study applications of elements of the model to the Speed River and to the Saint John River are included.

scholarly journals Simulation of Water Pollution Accident with Water Quality Model

2014 ◽  
Vol 23 (3) ◽  
pp. 177-186
Author(s):  
Hyun Gu Choi ◽  
Jun Hyung Park ◽  
Kun Yeun Han
Keyword(s):  
Water Pollution ◽  
Water Quality ◽  
Water Quality Model ◽  
Quality Model

A Temporal-Spatial Simulation and Dynamic Regulation System of Water Quality on Sudden Water Pollution Accidents

2014 ◽  
Vol 556-562 ◽  
pp. 925-928 ◽  
Author(s):  
Bo Zhang ◽  
Shao Hui Yang ◽  
Qian Ting Hao ◽  
Chao Hui Yu
Keyword(s):  
Water Pollution ◽  
Water Quality ◽  
Regulation System ◽  
Dimensional System ◽  
Spatial Simulation ◽  
Quality Model ◽  
Dynamic Regulation ◽  
Songhua River ◽  
Spatial Dimensions ◽  
Sudden Water Pollution

We develop a novel system for temporal-spatial simulation and dynamic regulation of water quality in water pollution accidents by introducing GIS to traditional one-dimensional system dynamics water quality model. We apply this system to the Songhua River water pollution accident which happened in 2005 and achieve good performance in simulating pollution zone migration and transformation in temporal and spatial dimensions.

Based on Index Difference of River Water Quality Model and Application in Dianchi Lake Basin

2013 ◽  
Vol 726-731 ◽  
pp. 3320-3325
Author(s):  
Ying Gang Xie ◽  
Dian Jiang ◽  
Jiao Li Kuang
Keyword(s):  
Water Pollution ◽  
Water Quality ◽  
River Water ◽  
Water Quality Model ◽  
River Water Quality ◽  
Dianchi Lake ◽  
Lake Basin ◽  
Dynamic Visualization ◽  
Quality Model ◽  
Gis Technology

Based on the river advection and diffusion process, the application of mass balance principle, a suitable diffusion model in Dianchi Lake Basin rivers burst water pollution emergency treatment. River water quality model based on the exponential difference solving simulated the spatial and temporal distribution of pollutants in the sudden water pollution accidents. This paper quantitatively simulated time and concentration values at the different locations of the river downstream of the pollutants reach Finally, GIS technology to achieve the simulation results of the real-time dynamic visualization.

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