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 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>.

Research on the distribution of neonicotinoid and fipronil pollution in the Yangtze River by high-performance liquid chromatography

2020 ◽  
Vol 12 (46) ◽  
pp. 5581-5590
Author(s):  
Xin Pan ◽  
Zhangjun Wang ◽  
Chao Chen ◽  
Hui Li ◽  
Xianxin Li ◽  
...  
Keyword(s):  
High Performance Liquid Chromatography ◽  
Liquid Chromatography ◽  
Yangtze River ◽  
High Performance ◽  
Solid Phase ◽  
Water Environment ◽  
River Estuary ◽  
Yangtze River Estuary ◽  
The Yangtze River ◽  
The Yangtze River Estuary

Neonicotinoids and fipronil pesticides in the water environment of the Yangtze River Estuary was detected by SDB-RPS solid-phase extraction membranes and high-performance liquid chromatography-mass spectrometry..

Preliminary evaluation of ecological risk for the city area from the Pearl River Estuary

2014 ◽  
Vol 70 (10) ◽  
pp. 1648-1655 ◽  
Author(s):  
Qiuying Chen ◽  
KinChung Ho ◽  
Jingling Liu
Keyword(s):  
Relative Risk ◽  
Ecological Risk ◽  
Water Environment ◽  
River Estuary ◽  
Pearl River Estuary ◽  
Risk Scores ◽  
Pearl River ◽  
Total Risk ◽  
The Pearl River Estuary ◽  
The Pearl River

It is essential to evaluate the ecological risk for the estuary cities area for the environmental restoration of the estuary. The ecological risk of six city areas from the Pearl River Estuary were evaluated by using the relative risk model. The relative risk assessment method was developed by considering the river network density in the sub-region. The results indicated that Dongguan had the largest ecological risk pressure with total risk scores as high as 10,846.3, and Hong Kong had the lowest ecological risk pressure with total risk scores up to 4,104.6. The greatest source was domestic sewage with total risk scores as high as 1,798.6, followed by urbanization and industry. Oxygen-consuming organic pollutants, organic toxic pollutants and nutrients were the major stressors of the water environment. In terms of habitats, the water environment was enduring the greatest pressure. For the endpoints, water deterioration faced the largest risk pressure.

scholarly journals Anafre River Management Based on Local Communities in Reducing the Impact of Sedimentation in Gulf of YOS Sudarso

2015 ◽  
Vol 6 (4) ◽  
pp. 98-103
Author(s):  
Annita Sari ◽  
Mahatma Lanuru .
Keyword(s):  
Water Environment ◽  
River Estuary ◽  
Active Role ◽  
Residential Areas ◽  
Community Based ◽  
Close Proximity ◽  
Qualitative Descriptive ◽  
Transportation Routes ◽  
The Impact

The life of coastal communities is always associated with water. Anafre River estuary is one of the river estuaries that empties directly into the Gulf of Yos Sudarso. The amount of particles swept away and buried in estuary sedimentation Anafre inflicts not only the river but the Gulf of Yos Sudarso. Declining water quality of the Gulf of Yos Sudarso is caused by the influx of water from the Anafre River, whereas all Anafre River watersheds are located in close proximity to residential areas. This study aims to determine the level of public knowledge on the effects of sedimentation and community based management. Data are collected by field observations and interviews with the community, and analyzed using the qualitative descriptive method. The results showed that the community plays an active role in the maintenance and utilization of the Yos Sudarso area, because the gulf of Yos Sudarso serves as transportation routes, tourist areas, and workplaces (fishermen). The maintenance of water environment in river estuaries and the gulf is based on the principles of awareness and cooperation without ignoring the people's culture.

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.

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