scholarly journals Quantification of the Coordination Degree between Dianchi Lake Protection and Watershed Social-Economic Development: A Scenario-Based Analysis

2020 ◽  
Vol 13 (1) ◽  
pp. 116
Author(s):  
Hansheng Kong ◽  
Yilei Lu ◽  
Xin Dong ◽  
Siyu Zeng
Keyword(s):  
Water Quality ◽  
Economic Development ◽  
Growth Control ◽  
Integrated Approach ◽  
Development Planning ◽  
Dianchi Lake ◽  
Lake Basin ◽  
Quality Model ◽  
Medium Development ◽  
Coordination Degree

Dianchi Lake is the largest freshwater lake on the Yunnan–Guizhou Plateau near Kunming City, China. As one of the most polluted lakes in China, although billions of U.S. dollars have been spent trying to clean it up, water pollution and eutrophication are still a bottleneck for regional sustainable development. This research established an integrated approach for the evaluation of the coupling coordination degree to support future planning of the Dianchi Lake basin. Ten future scenarios for possible development directions of Dianchi Lake basin were designed to find the best balance between development and protection. Among these scenarios, a high protection–medium development scenario is the most suitable scenario for future development planning. To further improve the coordination degree, economic growth control and non-point source governance were the most effective and feasible approaches. Furthermore, a water quality model was used to verify the coordination degree. It was found that the high protection–medium development scenario can reach the water quality target in 2025. The coordination degree evaluation could be a practical link to help equilibrate the socio-economic development and environmental protection of the Dianchi Lake basin.

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.

Modelling Foodweb Accumulation of Cadmium in Sedimentation Areas of the Rhine Delta

1994 ◽  
Vol 29 (3) ◽  
pp. 137-139 ◽  
Author(s):  
P. R. G. Kramer ◽  
Th P. Traas ◽  
T. Aldenberg ◽  
M. B. de Vries
Keyword(s):  
Water Quality ◽  
Dynamic Model ◽  
Integrated Approach ◽  
Quality Model ◽  
Modelling Framework ◽  
Model Predictions ◽  
Effect Concentration ◽  
The Impact ◽  
Contaminant Accumulation ◽  
Causality Chain

An integrated approach concerning the causality chain of emission, distribution and effects of toxicants was chosen to analyze the influence of pollution and the impact of historical and future measures in the Rhine basin. All major sources have been quantified and the distribution of nutrients and toxicants is determined by means of a dynamic model. A contaminant accumulation model is linked to this water quality model in order to assess the ecological effects of the compounds in specific areas. This modelling framework is used to analyze effects of cadmium on the foodweb found in Rhine sedimentation areas. Model predictions show that No Observed Effect Concentration (NOEC) levels for cadmium in algae and small molluscs are not exceeded.

Study on Tieling City's water environmental carrying capacity

2015 ◽  
Vol 16 (1) ◽  
pp. 52-60 ◽  
Author(s):  
Limin Hou ◽  
Qiang Yue ◽  
Xiangzheng Hu ◽  
Tong Wang ◽  
Liusuo Wang ◽  
...  
Keyword(s):  
Water Quality ◽  
Economic Development ◽  
Carrying Capacity ◽  
Oxygen Demand ◽  
Quality Data ◽  
Quality Model ◽  
Water Quality Data ◽  
Environmental Carrying Capacity ◽  
Definition Of ◽  
Water Environmental Carrying Capacity

The water environmental carrying capacity (WECC) of a city can demonstrate a balance between the level of exploitation of the local water resources and the population growth and concomitant socio-economic development. To begin with, the definition of WECC was elaborated. Combined with hydraulic, hydrologic and water quality data, a one-dimensional water quality model was subsequently applied to simulate the water pollutants (chemical oxygen demand (COD)) in Tieling City. Then, a multi-objective model was applied to explore WECC. Economy, demography, and contaminant were selected as goals, taking into account the constraints of macroeconomic aggregates, water supply, water quality, and population. The results showed WECC could nearly carry all planned gross domestic product (GDP), population in the planning years 2015, 2020, and 2025 with the maximum COD of 30,681.7 t, but not for the condition of maximum COD of 15,709.0 t. That is, COD overload would occur if GDP and population develop as planned. Some measures must be taken to improve WECC in Tieling City, which are valuable for supporting the adjustment and planning for social-economic development.

Management of microbial water quality: new perspectives for developing areas

1995 ◽  
Vol 32 (5-6) ◽  
pp. 183-191 ◽  
Author(s):  
M. C. Steynberg ◽  
S. N. Venter ◽  
C. M. E. de Wet ◽  
G. du Plessis ◽  
D. Holhs ◽  
...  
Keyword(s):  
Water Quality ◽  
Steady State ◽  
Stream Water ◽  
Water Quality Management ◽  
Development Planning ◽  
Management Tool ◽  
Stream Water Quality ◽  
Quality Model ◽  
Microbial Water Quality ◽  
Micro Organisms

A case study indicated that the high number of pathogenic micro-organisms in the Rietspruit, South Africa, can impact water uses. Factors contributing to high microbial numbers are high density population with limited services provided per site, sabotage of the sewage reticulation system, lack of money and management skills to provide the essential services and limited integrated development planning for the catchment. Due to non-steady state conditions in the catchment, the specific use and physical characteristics of the river and the difficulty in determining flow, the usefulness of a steady-state stream water quality model as a management tool is limited. Determining the decay rate of micro-organisms by means of chamber studies, may be a first step to predict microbial water quality. Involving the community in preventing microbial pollution may be a more appropriate tool for microbial water quality management in developing areas.

Case study on water quality modelling of Dianchi Lake, Yunnan province, South West China

1999 ◽  
Vol 40 (2) ◽  
pp. 35-43 ◽  
Author(s):  
A.V. Gray ◽  
Wang Li
Keyword(s):  
Water Quality ◽  
Lake Water ◽  
Dianchi Lake ◽  
Water Quality Modelling ◽  
Quality Model ◽  
Lake Water Quality ◽  
West China ◽  
Run Off ◽  
Projected Changes

The main aim of this work was to construct and validate a mathematical water quality model of the Dianchi lake, so that by altering input total phosphate (TP) loads the projected changes in the lake water TP concentrations could be estimated. Historical information had indicated deteriorating lake water quality with increasing TP concentrations. The model was based on a simple annual mass balance, relying on 3 years (wet, average and dry) data with all TP loads quantified, 7 years of lake water quality, and 36 years of flow data. All lake processes were considered within a single variable, R. Planning TP removal at STWs and within fertilizer plants, coupled with interventions to reduce non-point TP loads from all land run-off by 50%, suggested future lake water TP concentrations could be stabilised at about 0.3 mg TP/l, i.e. the estimated limit for producing algal concentrations that would cause major problems in water treatment plants. The TP load reductions envisaged as realistic would only stabilise the lake water quality by about the year 2008; interventions, unfortunately, could not return the lake to its former pristine condition. The accuracy of the predictions was ± 0.1 mg TP/1, so collection of better data was needed.

Assessment of pollution of the river Buriganga, Bangladesh, using a water quality model

1999 ◽  
Vol 40 (2) ◽  
pp. 129-136 ◽  
Author(s):  
Mir Mostafa Kamal ◽  
Anders Malmgren-Hansen ◽  
A. B. M. Badruzzaman
Keyword(s):  
Water Quality ◽  
River Water ◽  
River System ◽  
Integrated Approach ◽  
Quality Parameters ◽  
Water Quality Model ◽  
River Water Quality ◽  
Dhaka City ◽  
Quality Model ◽  
The Status

The River Buriganga, which runs past Dhaka City, is at present one of the most polluted rivers in Bangladesh. Dhaka City is very densely populated and will be one of the ten ‘Mega Cities’ by the year 2000. However, only a small fraction of the total wastewater being generated in the City is treated. Consequently, the amount of untreated wastes, both domestic and industrial, being released into the Buriganga is tremendous and is increasing day by day. Therefore, the objectives of this study were to investigate the status of the river water quality in terms of some cardinal water quality parameters, and to simulate the dissolved oxygen (DO) level using a water quality model. In order to fulfil the objectives, a comprehensive data acquisition programme – from both in situ and laboratory testing – was carried out. Then, a one-dimensional water quality model was developed for the Buriganga River system for a dry period of 1994-95. Different scenarios were tested to predict the most likely condition of the river. The results of the model simulations have replicated the alarming low DO level in the Buriganga. Option runs show that an integrated approach would be required to restore the river water quality with regard to biodegradable pollutants.

scholarly journals Calculation of water environmental capacity of Puzhehei Lake

2021 ◽  
Vol 276 ◽  
pp. 01026
Author(s):  
Lei Sun ◽  
Wei Ma ◽  
Jing-ya Ban ◽  
De-xuan Qi
Keyword(s):  
Water Quality ◽  
Rainy Season ◽  
Water Quality Monitoring ◽  
Quality Data ◽  
Lake Basin ◽  
Environmental Capacity ◽  
Quality Model ◽  
Water Quality Data ◽  
Water Environmental Capacity ◽  
And Diffusion

The calculation of water environmental capacity of Puzhehei lake is of great significance for preventing water pollution and protecting water ecological environment of Puzhehei Lake Basin. Based on the lack of hydrological and water quality data in Puzhehei Lake Basin, a large number of basic data were collected through pollution source investigation and water quality monitoring. On this basis, a twodimensional hydrodynamic water quality model of Puzhehei lake was established by using Mike21 model to simulate the migration and diffusion of pollutants into the lake. The current situation of pollution load in Puzhehei lake was analyzed, and the characteristics of water flow, hydrodynamic force and the migration and diffusion law of pollutants in Puzhehei Lake were analyzed. The results show that: ①the annual loads of COD, TN, TP and NH3-N in puzhehai Lake in 2018 are 4090.0t, 401.3t, 34.4t and 122.6t; ②Puzhehei lake is mainly non-point source pollution, and the difference of water environmental capacity between non rainy season and rainy season is very significant.

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