Water environment management at home and abroad research situation and enlightenment

2014 ◽  
pp. 127-138 ◽  
Keyword(s):  
Water Environment ◽  
Environment Management ◽  
Research Situation ◽  
At Home

scholarly journals Assessment of Nakdong River Basin Management: Target Water Quality Achievement and Future Challenges

2020 ◽  
Vol 20 (2) ◽  
pp. 251-263
Author(s):  
Kyeong Hwan Kang ◽  
Junghyeon Kim ◽  
Hyeonjin Jeon ◽  
Kyoungwoo Kim ◽  
Imgyu Byun
Keyword(s):  
Water Quality ◽  
River Basin ◽  
Water Environment ◽  
Quality Data ◽  
Master Plan ◽  
Nakdong River ◽  
Environment Management ◽  
Pollutant Load ◽  
Nakdong River Basin ◽  
Representative Points

In 2006, the Korean Ministry of Environment established <The 1st Water Environment Management Master Plan>. The plan aimed at “Clean Water, Eco River 2015” and guided water quality protection and strengthened water management. This study evaluated the achievement of the target water quality among the 33 mid-level basins in the Nakdong River basin and assessments of the causes of non-achievement of the target water quality by mid-level basins. According to the 2015 water quality data, only 16 of the 33 mid-level basins achieved the target water quality. The low achievement of the target water quality was attributed to the failure to predict the pollutant load at the time of planning, problems with the management of tributaries, implementation of the <Four major river restoration project>, and problems with the representativeness of the water quality representative points. In addition, feasibility studies on the water quality monitoring representative point used in each mid-level basin were also performed; some mid-level basins required improvement or change of the representative points. This study also suggested further research to improve water quality, such as detailed studies of the management of pollutant load, mainstream tributaries, and water quality indicators, for the revision of the current ongoing <The 2nd Water Environment Management Master Plan>.

scholarly journals Basic study for water-environment management in the Ara-River estuary

1996 ◽  
Vol 40 ◽  
pp. 389-396
Author(s):  
Akihiko NUNOMURA ◽  
Masakazu SHIBATA ◽  
Yuji MINAMI
Keyword(s):  
Water Environment ◽  
River Estuary ◽  
Basic Study ◽  
Environment Management

scholarly journals Construction risk analysis of water environment treatment project based on WBS-RBS and AHP in flood period --Take the EPC project of comprehensive treatment of water environment in the east of a city as an example

2021 ◽  
Vol 236 ◽  
pp. 04025
Author(s):  
Zhi Zheng ◽  
Qi Wu Chen ◽  
Tian Cheng Zhang ◽  
Ren Jie Zhang ◽  
Xing Fu Wang ◽  
...  
Keyword(s):  
Water Environment ◽  
Comprehensive Treatment ◽  
Environment Management ◽  
Engineering Construction ◽  
Flood Season ◽  
Construction Risk ◽  
Project Construction ◽  
Flood Period ◽  
Management Project ◽  
Current Engineering

Basic environment construction is a livelihood project, especially water environment management is a hot topic in current engineering construction. There are more or fewer risks in the water environment treatment construction process, especially the black and smelly water treatment during the flood season. Hidden dangers, especially this year is the resumption of work and production after the epidemic, which coincides with the flood season. This article takes the EPC project of comprehensive water environment management in the east of a city as an example, and combines the WBS-RBS method and AHP analysis to analyze the risks of the water environment management project during the flood period. Analysis enables the project risk to be predicted in advance, and the risk is quantified, so that the risk coefficient is minimized and the project construction can proceed smoothly.

scholarly journals Total Maximum Allocated Load of Chemical Oxygen Demand Near Qinhuangdao in Bohai Sea: Model and Field Observations

Water ◽  
2020 ◽  
Vol 12 (4) ◽  
pp. 1141 ◽  
Author(s):  
Zhichao Dong ◽  
Cuiping Kuang ◽  
Jie Gu ◽  
Qingping Zou ◽  
Jiabo Zhang ◽  
...  
Keyword(s):  
Water Quality ◽  
Chemical Oxygen Demand ◽  
Carrying Capacity ◽  
Bohai Sea ◽  
Water Environment ◽  
Oxygen Demand ◽  
Pollutant Emission ◽  
Optimization Approach ◽  
Environment Management ◽  
Total Maximum

Total maximum allocated load (TMAL) is the maximum sum total of all the pollutant loading a water body can carry without surpassing the water quality criterion, which is dependent on hydrodynamics and water quality conditions. A coupled hydrodynamic and water quality model combined with field observation was used to study pollutant transport and TMAL for water environment management in Qinhuangdao (QHD) sea in the Bohai Sea in northeastern China for the first time. Temporal and spatial variations of the chemical oxygen demand (COD) concentration were investigated based on MIKE suite (Danish Hydraulic Institute, Hørsholm, Denmark). A systematic optimization approach of adjusting the upstream pollutant emission load was used to calculate TMAL derived from the predicted COD concentration. The pollutant emission load, TMAL, and pollutant reduction of Luanhe River were the largest due to the massive runoff, which was identified as the most influential driving factor for water environmental capacity and total carrying capacity of COD. The correlation analysis and Spearman coefficient indicate strong links between TMAL and forcing factors such as runoff, kinetic energy, and pollutant emission load. A comparison of total carrying capacity in 2011 and 2013 confirms that the upstream pollutant control scheme is an effective strategy to improve water quality along the river and coast. Although, the present model results suggest that a monitoring system could provide more efficient total capacity control. The outcome of this study establishes the theoretical foundation for coastal water environment management strategy in this region and worldwide.

scholarly journals Application of Grey Clustering Method Based on Improved Analytic Hierarchy Process in Water Quality Evaluation

2018 ◽  
Vol 246 ◽  
pp. 02004
Author(s):  
Jia Wang ◽  
Xu Wang ◽  
Xinhua Zhang ◽  
Haichen Li ◽  
Xiaohui Lei ◽  
...  
Keyword(s):  
Water Quality ◽  
Analytic Hierarchy Process ◽  
Water Environment ◽  
Clustering Coefficient ◽  
Clustering Method ◽  
Analytic Hierarchy ◽  
Environment Management ◽  
Grey Clustering ◽  
Hierarchy Process ◽  
Improved Analytic Hierarchy Process

To highlight the differences in water quality impacts of different indicators in water samples, this paper proposes a grey clustering method based on improved analytic hierarchy process to evaluate the quality of surface water. According to the pollution degree of different indicators in the water quality sample, the importance score is assigned, and the weight of different indicators is calculated by the analytic hierarchy process. The weight participates in the calculation of the grey clustering coefficient, and the evaluated water quality category considers the difference of the contribution rate of different pollutant indicators. The water quality samples of three water periods (Abundant, Normal, and Poor water flow periods) in the four sections of Qingshui River in Duyun City (Tea garden, Youhang, Yingpan and Jiadeng) were selected for evaluation, and the conventional grey clustering method and single factor method were used. The evaluation results were compared and analyzed. The evaluation results show that the improved grey clustering method is more scientific and reasonable and can provide a basis for water quality assessment and water environment management of water environment management departments.

A Summary of Research on Informatization of Specialized Language in the Framework of Sino-foreign Cooperative Education

2016 ◽  
Vol 6 (9) ◽  
pp. 1863 ◽  
Author(s):  
Hongyu Zhu ◽  
Yanzhen Lan
Keyword(s):  
Language Teaching ◽  
Cooperative Education ◽  
Colleges And Universities ◽  
Specialized Language ◽  
Research Situation ◽  
At Home

This paper narrates firstly characteristics of specialized language teaching, educational informationization and Sino-Foreign cooperative education. Then it reviews briefly the research situation of informatization of specialized language both at home and abroad, introduces the development of specialized language teaching in colleges and universities in China. This paper mainly discusses the content of research on informatization of specialized language teaching with a specific case, and proposes that the problems of specialized language teaching could be solved with the aid of educational informationization.

A New Simplification Method within Deviation Parameters and Allowed Angles

2012 ◽  
Vol 566 ◽  
pp. 239-243
Author(s):  
Na Meng ◽  
Xin Li Chen ◽  
Yi Qi Zhou ◽  
Bao Qing Dai
Keyword(s):  
Surface Reconstruction ◽  
Point Cloud ◽  
Practical Method ◽  
Point Cloud Data ◽  
Memory Space ◽  
Cloud Data ◽  
Advantages And Disadvantages ◽  
Research Situation ◽  
Improved Algorithm ◽  
At Home

Research situation at home and abroad is described in detail about simplification methods of point cloud data. After analyzing the advantages and disadvantages of existing algorithms, an improved algorithm, a method combining with deviation parameters and allowed angles to simply mass cloud data, is proposed from several aspects of complexity, required time and memory space. The experiments show that the simplified point cloud have a great relationship with the selected tolerance value. And the point cloud after simplification has advantages of high reservation of curve and surface reconstruction perfectly, which is reserved enough data. The proposed simplification algorithm is an effective and practical method.

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