Dynamic simulation of water resources in an urban wetland based on coupled water quantity and water quality models

2015 ◽  
Vol 72 (10) ◽  
pp. 1762-1773 ◽  
Author(s):  
Weibo Zeng ◽  
Youpeng Xu ◽  
Xiaojun Deng ◽  
Longfei Han ◽  
Qianyu Zhang
Keyword(s):  
Water Quality ◽  
Carrying Capacity ◽  
Anthropogenic Pollution ◽  
River Network ◽  
Water Diversion ◽  
Water Quantity ◽  
Class Iii ◽  
Allocation Policy ◽  
Xixi Wetland

Water quality in wetlands plays a huge role in maintaining the health of the wetland ecosystem. Water quality should be controlled by an appropriate water allocation policy for the protection of the wetlands. In this paper, models of rainfall/runoff, non-point source pollution load, water quantity/quality, and dynamic pollutant-carrying capacity were established to simulate the water quantity/quality of Xixi-wetland river network (in the Taihu basin, China). The simulation results showed a satisfactory agreement with field observations. Furthermore, a ‘node-river-node’ algorithm that adjusts to the ‘Three Steps Method’ was adopted to improve the dynamic pollutant-carrying capacity model and simulate the pollutant-carrying capacity in benchmark years. The simulation result shows that the water quality of the river network could reach class III stably all year round if the anthropogenic pollution is reduced to one-third of the current annual amount. Further investigation estimated the minimum amount of water diversion in benchmark years under the reasonable water quantity-regulating rule to keep water quality as class III. With comparison of the designed scale, the water diversion can be reduced by 184 million m3 for a dry year, 191 million m3 for a normal year, and 198 million m3 for a wet year.

Optimal Model of Hydrodynamic Controlling on Pumps and Slice Gates for Water Quality Improvement

2013 ◽  
Vol 316-317 ◽  
pp. 732-740 ◽  
Author(s):  
Hui Ping Zhou ◽  
Wei Yun Shao ◽  
Li Jie Jiang
Keyword(s):  
Water Quality ◽  
Quality Improvement ◽  
Objective Function ◽  
River Network ◽  
Water Diversion ◽  
Engineering Practice ◽  
Optimal Model ◽  
Water Quality Improvement ◽  
Quality Objective ◽  
The Cost

In order to evaluate the effective of the hydrodynamic control of pumps and slice gates in plain river network on the water quality improvement, an optimal mathematic model of hydrodynamic controlling on the pumps and slice gates in plain river network was established by combining the water quality objective function and the cost objective function together. The cost function has been set as the main objective function, while the water quality objective function was simplified as the restrained condition for every required water quality index, through which the multi-objective optimization was transferred into a single-objective optimization. Then, this optimal model was solved by coupling the water environmental model with the hybrid genetic algorithm. The case study of Jiaxing river network shows that the proposed hydrodynamic controlling optimal model in this paper can develop the optimal water diversion scheme for water quality improvement and cut its cost. It works better compared to the traditional water quality objective function and can be used in the engineering practice.

A framework of characteristics identification and source apportionment of water pollution in a river: a case study in the Jinjiang River, China

2012 ◽  
Vol 65 (11) ◽  
pp. 2071-2078 ◽  
Author(s):  
Haiyang Chen ◽  
Yanguo Teng ◽  
Jinsheng Wang
Keyword(s):  
Water Pollution ◽  
Water Quality ◽  
Source Apportionment ◽  
Comprehensive Evaluation ◽  
Principal Component ◽  
Anthropogenic Pollution ◽  
Ammonia Nitrogen ◽  
Support Vector ◽  
Jinjiang River

A framework for characteristics identification and source apportionment of water pollution in the Jinjiang River of China was proposed in this study for evaluation. A total of 114 water samples which were generated between May 2009 and September 2010 at 13 sites were collected and analysed. First, support vector machine (SVM) and water quality pollutant index (WQPI) were used for water quality comprehensive evaluation and identifying characteristic contaminants. Later, factor analysis with nonnegative constraints (FA-NNC) was employed for source apportionment. Finally, multi-linear regression of the absolute principal component score (APCS/MLR) was applied to further estimate source contributions for each characteristic contaminant. The results indicated that the water quality of the Jinjiang River was mainly at the third level (65.79%) based on national surface water quality permissible standards in China. Ammonia nitrogen, total phosphorus, mercury, iron and manganese were identified as characteristic contaminants. Source apportionment results showed that industrial activities (63.16%), agricultural non-point source (16.50%) and domestic sewage (12.85%) were the main anthropogenic pollution sources which were influencing the water quality of Jinjiang River. This proposed method provided a helpful framework for conducting water pollution management in aquatic environment.

scholarly journals Water Quality Analysis In Bengawan Solo River Bojonegoro Regency

2019 ◽  
Vol 11 (1) ◽  
pp. 1-9
Author(s):  
Dyah Setyaningrum ◽  
Laily Agustina R
Keyword(s):  
Water Quality ◽  
River Water ◽  
Quality Analysis ◽  
Water Sampling ◽  
Class Iii ◽  
Water Quality Analysis ◽  
Temperature Conductivity ◽  
Household Appliances

The purposeofthis research is to analyze the water quality of Bengawan Solo River in Bojonegoro Regency. Water sampling was carried out at 6 monitoring points along the Bengawan Solo River in Bojonegoro Regency. Determination of sampling monitoring points, based on the differences of characteristics that exist in the study area. Some parameters issued are temperature, conductivity, COD, BOD, and Oil/ fat food which are then compared with the criteria for Class III standards of river water quality in accordance with the Regional Regulation of East Java Province Number 2 of 2008. Based on the analysis results obtained at each point monitor, area 1, is the most polluted area. It is caused, in this area, there are several activity of downtown. Households produce waste from bathroom, toilet, kitchen, washing clothes and washing household appliances.

scholarly journals DAYA TAMPUNG SUNGAI REMBAGAN TERHADAP BEBAN PENCEMARAN MENGGUNAKAN METODE STREETER-PHELPS

2021 ◽  
Vol 10 (2) ◽  
pp. 209
Author(s):  
Sri Wahyuningsih ◽  
Elida Novita ◽  
Irfan Dwi Satya
Keyword(s):  
Water Quality ◽  
Dissolved Oxygen ◽  
Agricultural Waste ◽  
Oxygen Deficit ◽  
Research Needs ◽  
Agricultural Activities ◽  
Class Iii ◽  
Pollution Load ◽  
Community Activities

Rembagan River is the main tributary of the Bedadung River in Cangkring Village, Patrang District, Jember Region. Various community activities in the Rembagan River area such as bathing, washing, defecating and urinating as well as agricultural activities will produce domestic and agricultural waste. These wast can cause river water pollution, especially water quality degradation. then the research needs to be done an analysis of the capacity of the Rembagan River in receiving pollution costs. The purpose of this study is to find out how much the ability of the Rembagan River to accept the burden of pollutants using the Streeter-Phelps method. Streeter-Phelps modeling takes into account two phenomena, namely the process of measuring dissolved oxygen (deoxygenation) and the process of increasing dissolved oxygen (reaeration). The results obtained from these calculations are oxygen drop curves determined on the basis of oxygen deficit values. The average values of deoxygenation rate and reoxygenation rate were sequentially 1.58931 mg/L/day and 10.09982 mg/L/day. So that self-purification can run well which means the water quality of the Rembagan River was still relatively good. This can be seen in the DO model pattern that goes up in each segment. The actual DO of 5.6760 mg / L was greater than the DO standard of class III quality of 3 mg / L. It can be interpreted that the Rembagan River still has a remaining DO of 2.676 mg / L and was still able to accept pollution cost of 18.8 kg/day. Keywords:  pollution load, Rembagan River, river capacity

scholarly journals Distribution of Aquatic Diptera larvae of Yeşilırmak River (Turkey) and ecological characteristics

2020 ◽  
Vol 37 (4) ◽  
pp. 397-407
Author(s):  
Ozge Basoren ◽  
Nilgün Kazancı
Keyword(s):  
Water Quality ◽  
Power Plants ◽  
Diversity Index ◽  
Running Waters ◽  
Hydroelectric Power ◽  
Class Iii ◽  
Ecological Characteristics ◽  
Physicochemical Variables ◽  
Wiener Diversity Index

Yeşilırmak River is one of the most important running waters of Turkey, but the water quality of this river has been affected by agricultural and domestic pollution. Dams and hydroelectric power plants also threaten the habitat quality and biodiversity of the river. This research contains investigation of Diptera fauna in Yeşilırmak River and tributaries, determination ecological characteristics of the collecting sites according to System A and System B Classification of Water Framework Directive (WFD), assessment of water quality of the studied sites by measuring the physicochemical variables (water temperature, pH, electrical conductivity, dissolved oxygen, NO2-N, NO3-N, NH4-N, PO4-P) and using some metrics (abundance, number of taxa, Simpson Diversity Index, Shannon-Wiener Diversity Index, Margalef Diversity Index, Evenness). Thirty-three (33) sites were sampled from Yeşilırmak River and its tributaries in June 2010. Diptera individuals were detected in 20 of them. Two thousand four hundred forty-five (2445) individuals belonging to 12 families and 16 taxa were identified in 20 sampling sites. The water quality classes of the studied sites were Class III (moderate pollution) and Class IV (heavily pollution) according to values of physicochemical variables.

scholarly journals KUALITAS AIR SUNGAI DI DESA TANIPAH (GAMBUT PANTAI), KALIMANTAN SELATAN

2018 ◽  
Vol 5 (1) ◽  
pp. 1
Author(s):  
Rahmat Eko Sanjaya ◽  
Rilia Iriani
Keyword(s):  
Water Quality ◽  
Dissolved Oxygen ◽  
River Water ◽  
Sea Water ◽  
Ph Value ◽  
Iron Concentration ◽  
Quality Standard ◽  
Ex Situ ◽  
Class Iii

Tanipah village is a coastal village in Kecamatan Aluh-Aluh, Kabupaten Banjar, Kalimantan Selatan and a tidal area of sea water. Tanipah villagers utilize river water for daily needs, so the quality of river water is a major concern. The results of this research are expected to be informations for the community about quality of river water in Tanipah. This research is a survey research and the analysis was conducted in-situ and ex-situ. The analysis was done by comparing the test result against the predefined quality standard. River water temperature in Tanipah ranges from 28<sup>0</sup>C – 33,6<sup>0</sup>C and has no taste and no smell. Turbidity of 54,8 NTU, indicating river water is not feasible for consumption. Dissolved oxygen is 5,9 mg/L and is in the mild contaminated category. The COD and BOD value respectively 17,03 mg/L and 6,70 mg/L, exceeds the limit of the class I water quality standard. The pH value is at 7,33, indicating that the pH is normal. The iron concentration is 1,71 mg/L, exceeds the maximum permissible level for drinking water quality. Other metals likes Mn, Pb, Cu and Cd, are within thresholds for the waters. River water in Tanipah village based on the value of dissolved oxygen, is in category of light contaminated. Thus, in general, river water in Tanipah village can only be used for class III water, as irrigation.

scholarly journals Water quality assessment of middle route of South-North water diversion project based on modified Nemerow index method

2021 ◽  
Author(s):  
Yilin Yang ◽  
Dawei Zhang ◽  
Jin Quan ◽  
Pengwen Wang ◽  
Yi Xu
Keyword(s):  
Water Quality ◽  
Quality Indicators ◽  
Early Stage ◽  
Water Quality Assessment ◽  
Water Diversion ◽  
Index Method ◽  
Water Quality Indicators ◽  
Water Diversion Project ◽  
North Water

Abstract It is of great significance to find a scientific way to assess the water quality of the middle route of the South-North Water Diversion Project. In this paper, the spatio-temporal changes of the 26 water quality indicators in eight key monitoring stations along the middle route since the project was put into use were analyzed, and the modified Nemerow index method was employed to assess the water quality of the route in its early stage of operation. The results show that the water quality remained good in the period of study. Important water quality indicators were identified, including temperature, permanganate index, dissolved oxygen, total phosphorus, total nitrogen, mercury content, and density of planktonic algae. It is advised that potential ecological risks related to algae and shellfish reproduction in the open canal deserve special attention.

scholarly journals PENETAPAN DAYA TAMPUNG BEBAN PENCEMARAN SUNGAI BADUNG DI DESA PEMOGAN

2016 ◽  
Vol 10 (2) ◽  
pp. 142
Author(s):  
Made Santiari ◽  
I Wayan Nuarsa ◽  
I Wayan Budiarsa Suyasa
Keyword(s):  
Water Quality ◽  
Point Source ◽  
Carrying Capacity ◽  
Load Capacity ◽  
Data Entry ◽  
Pollution Load ◽  
Sources Of Pollution ◽  
Pollutant Source

The water quality of Badung River in Pemogan village has exceeded the threshold limits.Therefore, It is needed to determinate the carrying capacity of Badung River. The determination of carrying capacity is very useful to control the disposal of waste into the Badung River. The objective of this study were to determine the sources of pollution, pollutant load and load capacity of Badung river at Pemogan village. Determination of pollutant source done with looked for land use and types of activities along the Badung river Pemogan village followed by field inspections. The pollution load was determined by multiplying the concentration of water quality and flow rate, while the carrying capacity was determined with the help of the program Qual2Kw ver 5.1. Determination of load capacity with Qualk2Kw ver 5.1 has several step such as data collect, the data entry process, calibration, verification and simulation according to the scenario. The result of this study showed sources of pollution that cause a decrease the water quality of Badung river in Pemogan village were non point source (agriculture and settlements) and point source (flow from upstream). The pollution load that flow into the Badung river in Pemogan village for BOD, COD and TSS respectively 419,97 kg/ day; 865,66 kg/day dan 160,70 kg/day. Load capacity of Badung river for COD and TSS were 1686.53 kg/day dan 4743.36 kg / day, Meanwhile, the load capacity of Badung River for BOD has overlimits.

Sign in / Sign up

Export Citation Format

Share Document