Fuzzy Hierarchy Comprehensive Evaluation of Water Quality in Different Lake Regions of Taihu Lake

2011 ◽  
Vol 356-360 ◽  
pp. 844-850
Author(s):  
Li Gu ◽  
Zu Lin Hua ◽  
Bo Hong ◽  
Ya Wei Li ◽  
Yan Gen
Keyword(s):  
Water Quality ◽  
Quality Assessment ◽  
Taihu Lake ◽  
Comprehensive Evaluation ◽  
Water Quality Assessment ◽  
Hydrodynamic Characteristics ◽  
Lake Morphology ◽  
Center Area ◽  
Fuzzy Hierarchy

Taihu Lake can be divided into several different lake regions such as bay area, center area, lakeshore area and etc. according to the hydrodynamic characteristics and the lake morphology. In the year of 2010, water quality were measured in 17 sampling points, consisting of 8 points in the Zhushan Lake bay, 3 points in the western lakeshore area, and 6 points in the center area. The fuzzy hierarchy comprehensive evaluation model was used to assess the water quality in different lake regions on the basis of the measured data. This method is a combination of fuzzy evaluation to determine membership degree and Analytic Hierarchy Process (AHP) to determine weight. AHP can be further reduced to these steps such as the goal defining, hierarchy establishing, judgment matrix building, hierarchy single ranking, hierarchy general ranking and uniformity inspecting. The results show that water quality of Zhushan Lake bay is in class Ⅴ except for some points in class Ⅳ. Water quality of center area is between class Ⅱand Ⅳ, and that of lakeshore area is in class Ⅴ. The water quality assessment on the different lake regions by this method can more practically reflect the water environmental status of Taihu Lake. This works contributed to the improvement of water quality assessment exactness and lake eutrophication controlling in the situation of the lake with large area.

scholarly journals Water Quality Assessment of Sirsiya River

2013 ◽  
Vol 13 (2) ◽  
pp. 141-146 ◽  
Author(s):  
Binod Prasad Shah ◽  
Bhoj R Pant
Keyword(s):  
Water Quality ◽  
Quality Assessment ◽  
River Water ◽  
Water Samples ◽  
Industrial Effluent ◽  
Water Quality Assessment ◽  
Chemical Characteristic ◽  
Oil And Grease ◽  
Industrial Corridor

The parameters such as temperature, PH, TSS, TDS, ammonia, phenol, cyanide, sulfide, oil and grease, chloride, DO, COD and BOD were taken to assess the water quality of Sirsiya river, central southern Nepal. Water samples were collected from upstream to downstream from the point receiving industrial effluent to Sirsiya river. It receives wastewater burden of more than 250 industries along Bara/Parsa industrial corridor. All the parameters except oil and grease were found within the generic standard. The study revealed that the physic-chemical characteristic of the river water was changing as a result of the discharge of untreated effluents from different industries. This may impact on water quality of Sirsiya river and also pose human health problems. Nepal Journal of Science and Technology Vol. 13, No. 2 (2012) 141-146 DOI: http://dx.doi.org/10.3126/njst.v13i2.7727

scholarly journals Water Quality Assessment of Gowrivakkam Lake

2019 ◽  
Vol 8 (12S) ◽  
pp. 1066-1067
Keyword(s):  
Water Quality ◽  
Natural Resources ◽  
Quality Assessment ◽  
Lake Water ◽  
Water Quality Assessment ◽  
Physicochemical Parameter ◽  
The Earth ◽  
Different Parts

Water is an important precious natural resources on the earth. It is used in irrigation, industries and domestic usage. In this study of water quality assessment of Gowrivakkam lake was carried out. Total of 8 samples was collected from different parts of the Gowrivakkam lake and analysis for various physicochemical parameter like as pH, Alkalinity, Hardness, Chloride, TDS, Fluoride, Ammonia, Phosphate and Nitrite. The analyzed parameter were compared with BIS standards. Quality of lake water in the study area was calculated. The WQI of this lake was found to be good. Therefore, the water can be used only after treatment.

scholarly journals Quality of pesticide data for groundwater analyzed for the National Water-Quality Assessment Project, 2013–18

2020 ◽  
Author(s):  
Laura M. Bexfield ◽  
Kenneth Belitz ◽  
Mark W. Sandstrom ◽  
Delicia Beaty ◽  
Laura Medalie ◽  
...  
Keyword(s):  
Water Quality ◽  
Quality Assessment ◽  
Water Quality Assessment ◽  
National Water

scholarly journals A water quality assessment model for Suya Lake Reservoir

2020 ◽  
Vol 20 (8) ◽  
pp. 3715-3721
Author(s):  
Xiaolei Ji ◽  
Xin Wang ◽  
Guoping Yang
Keyword(s):  
Water Quality ◽  
Quality Assessment ◽  
Evaluation Method ◽  
Cold Water ◽  
Comprehensive Evaluation ◽  
Fuzzy Comprehensive Evaluation ◽  
Water Quality Assessment ◽  
Assessment Model ◽  
Fuzzy Comprehensive Evaluation Method ◽  
Comprehensive Evaluation Method

Abstract Reasonable water quality assessment of reservoirs plays an important part in strengthening water source management. Based on the monitoring data on the water quality in Suya Lake Reservoir provided by water quality environmental monitoring agencies, this paper selected typical water quality indexes such as dissolved oxygen, permanganate (CODMn), ammonia nitrogen (NH3-N), total phosphorus (TP) and total nitrogen (TN) as the water quality assessment factors, and applied the fuzzy comprehensive evaluation method to assess the quality of water in the Suya Lake Reservoir on the basis of single factor assessment. The result shows that the fuzzy comprehensive evaluation method can accurately quantify the fuzzy assessment of water quality. The main pollution factors in Suya Lake Reservoir are TP and TN, and pollution mainly occurs in the waters on the west bank of the reservoir (between the Cold Water River and the Lianjiang River), with the Huangxi River and its inlet being the most seriously polluted. This study provides some reference for the improvement to the water quality assessment model and scientific basis for the prevention and control of water environment pollution in the reservoir area.

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