Water quality assessment by pollution-index method in the coastal waters of Hebei Province in western Bohai Sea, China

2011 ◽  
Vol 62 (10) ◽  
pp. 2220-2229 ◽  
Author(s):  
Shuguang Liu ◽  
Sha Lou ◽  
Cuiping Kuang ◽  
Wenrui Huang ◽  
Wujun Chen ◽  
...  
Keyword(s):  
Water Quality ◽  
Quality Assessment ◽  
Coastal Waters ◽  
Bohai Sea ◽  
Pollution Index ◽  
Water Quality Assessment ◽  
Hebei Province ◽  
Index Method

scholarly journals Water Quality Assessment along With Pollution Sources of the Halda River

2017 ◽  
Vol 43 (1) ◽  
pp. 61-70 ◽  
Author(s):  
Md Shafiqul Islam ◽  
Ali Akbar ◽  
Aysha Akhtar ◽  
Md Manzoorul Kibria ◽  
Md Simul Bhuyan
Keyword(s):  
Water Quality ◽  
Quality Assessment ◽  
Preventive Measures ◽  
Pollution Index ◽  
Water Quality Assessment ◽  
River Pollution ◽  
Total Alkalinity ◽  
Sewage Contamination ◽  
Conservation Of Natural Resources ◽  
Management And Conservation

In the present study water quality assessment and land based sources of pollutants discharged into the Halda River through four major canals were investigated. The ranges of pH, DO, BOD, NO3-N, PO4-P, chloride and total alkalinity of the collected samples varied from 7.1-8.8, 3.35-4.70 mg/L, 0.055-5.0 mg/L, 0.12-3.1 mg/L, 0.06-0.16 mg/L, 8.4-69.30 mg/L and 73-220 mg/L, respectively. pH, DO, BOD showed significant changes at Mondakini Canal and Chengkhali Canal for monsoon, post-monsoon and winter (p <0.05) while chloride at Chengkali Canal for all seasons (p≤0.05). Moreover, TA, NO3-N and PO4-P exhibited significant variation in the concentration at Mondakini Canal, Madari Canal and Chengkali Canal for three seasons (p ≤0.05). River Pollution Index indicated that the water of river at Mondakini Canal, Madari Canal, Chengkhali Canal and Khondakia Canal varied from low to moderate pollution. According to the interviewers, the Halda River is being polluted due to industrial waste (53%), sewage contamination (20%), tobacco farming (13%), rubber dam (8%) and sand extraction (6%). Therefore, necessary preventive measures should be taken in order to control the unwise and unauthorized discharge of harmful pollutants into the Halda River for the better management and conservation of natural resources. Asiat. Soc. Bangladesh, Sci. 43(1): 61-70, June 2017

scholarly journals Research on Water Quality Assessment Model Based on Improved Three-Dimensional Nemerow Index Method and Firefly Algorithm

2017 ◽  
Vol 7 (2) ◽  
pp. 47
Author(s):  
Jian Cao ◽  
Zheng-Long Li ◽  
Yuan-Biao Zhang
Keyword(s):  
Water Quality ◽  
Quality Assessment ◽  
Firefly Algorithm ◽  
Human Life ◽  
Three Dimensional ◽  
Water Quality Assessment ◽  
Assessment Model ◽  
Index Method ◽  
Threshold Setting ◽  
Ongoing Concern

Monitoring water quality is a subject of ongoing concern and study since water quality is closely related to human life. Although Nemerow index method is widely used in water quality assessment, the artificial threshold setting may lead to some errors. In this study, we improved the traditional Nemerow index method and built a three-dimensional water quality assessment model combined with the modified firefly algorithm (FA). Then, we applied the improved three-dimensional Nemerow index method to evaluate 100 random water samples. Compared with the traditional method, the improved one proved to be more objective, scientific and practical.

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