Evaluation of violations in water quality standards in the monitoring network of São Francisco River basin, the third largest in Brazil

2017 ◽  
Vol 189 (11) ◽  
Author(s):  
Elizângela Pinheiro da Costa ◽  
Carolina Cristiane Pinto ◽  
Ana Luiza Cunha Soares ◽  
Livia Duarte Ventura Melo ◽  
Sílvia Maria Alves Corrêa Oliveira
Keyword(s):  
Water Quality ◽  
River Basin ◽  
Monitoring Network ◽  
Quality Standards ◽  
Water Quality Standards ◽  
Sao Francisco River ◽  
The Third ◽  
São Francisco River

scholarly journals Kualitas Air pada DAS Bugis dan DAS Wain di Kawasan Hutan Lindung Sungai Wain Balikpapan

2020 ◽  
Vol 4 (2) ◽  
pp. 77
Author(s):  
Sri Sarminah ◽  
Dyna Raya Anugerah ◽  
Marlon Ivanhoe Aipassa ◽  
Agus Din
Keyword(s):  
Water Quality ◽  
River Basin ◽  
Government Regulation ◽  
Agricultural Waste ◽  
Animal Husbandry ◽  
Fish Farming ◽  
Quality Standards ◽  
Biological Properties ◽  
Regional Government ◽  
Water Quality Standards

 This study aims to determine the latest water quality conditions in terms of physical, chemical and biological properties in the DAS Bugis and DAS Wain. Analysis of water sample was conducted at the Water Quality Laboratory of the Department of Aquatic Resources and Fisheries and Marine Sciences, Mulawarman University, Samarinda. Data analysis refers to the Water Quality Standards based on East Kalimantan Regional Government Regulation No. 02/2011 about Management of Water Quality and Water Pollution Control. The results showed that the parameters of temperature, colour, TSS, TDS, BOD5, SO4 and NO3 were included in the Class I water quality standards that can be used as drinking water or for other consumption purposes. COD parameters (in the Right River Basin), DO and NH3 (in the River Basin) were included in Class II water quality standards, which can be used for water recreation infrastructure / facilities, freshwater fish farming, animal husbandry and plants irrigation. The pH parameters in the DAS Bugis were included in class IV water quality standards that can only be used to irrigate plants. Pollutant loads that contribute a lot to enter were agricultural and agricultural waste and domestic waste originating from community forest areas.

Applying Probabilistic Water Quality Standards in River Basin Water Quality Optimization Models

1974 ◽  
Vol 9 (1) ◽  
pp. 25-29
Author(s):  
M. B. Bayer
Keyword(s):  
Water Quality ◽  
River Basin ◽  
Treatment Plant ◽  
Oxygen Demand ◽  
Minimum Cost ◽  
Water Quality Standards ◽  
Quality Optimization ◽  
Basin Water ◽  
Do Concentration ◽  
Water Quality Models

Abstract This paper describes a method of applying probabilistic DO (dissolved oxygen) and BOD (biochemical oxygen demand) standards in river basin water quality models. Maximum likelihood estimators for the DO and BOD concentrations variances for each reach are used to obtain a lower bound for BOD so that the probability of violating specified DO and BOD standards is less than Θ per cent in any reach. These boundary values for DO and BOD concentrations are incorporated into a nonlinear water quality optimization model for finding the minimum cost set of wastewater treatment plant efficiencies required to meet DO and BOD standards. The method also provides the minimum DO concentration and the maximum BOD concentration which may be expected to occur 1-Θ of the time for any reach.

scholarly journals Assessment of Quality of Groundwater in Kandarvakottai and Karambakudi Areas of Pudukkottai District, Tamilnadu, India

2009 ◽  
Vol 6 (3) ◽  
pp. 898-904
Author(s):  
D. Ilangeswaran ◽  
R. Kumar ◽  
D. Kannan
Keyword(s):  
Water Quality ◽  
Electrical Conductivity ◽  
Physicochemical Parameters ◽  
Quality Standards ◽  
Physicochemical Characteristics ◽  
Total Dissolved Solids ◽  
Water Quality Standards ◽  
Standard Procedures ◽  
Groundwater Samples

Various samples of groundwater were collected from different areas of Kandarvakottai and Karambakudi of Pudukkottai District, Tamilnadu and analyzed for their physicochemical characteristics. The results of this analysis were compared with the water quality standards of ISI, WHO and CPHEEO. In this analysis the various physicochemical parameters such as pH, electrical conductivity, turbidity, total dissolved solids, Cl-, F-, SO42-, PO43-, NO3-, NO2-, CN-, Nas+, K+, NH3, Mn, Fe, Ca & Mg hardnessetc., were determined using standard procedures. The quality of groundwater samples were discussed with respect to these parameters and thus an attempt were made to ascertain the quality of groundwater used for drinking and cooking purposes in and around Kandarvakottai and Karambakudi areas.

scholarly journals Induced reproduction and reproductive characteristics of Rhinelepis aspera Agassiz, 1829 (osteichthyes: Siluriformes, Loricariidae)

1998 ◽  
Vol 41 (3) ◽  
pp. 309-314 ◽  
Author(s):  
Yoshimi Sato ◽  
Nelsy Fenerich-Verani ◽  
José Roberto Verani ◽  
Hugo Pereira Godinho ◽  
Edson Vieira Sampaio
Keyword(s):  
Body Weight ◽  
Water Temperature ◽  
River Basin ◽  
Fertilization Rate ◽  
Pituitary Extract ◽  
Reproductive Characteristics ◽  
Sao Francisco River ◽  
Absolute Fecundity ◽  
São Francisco River

Rhinelepis aspera is the largest Loricariidae species found in the São Francisco river basin where it is now rarely caught. Brooders kept in tanks were hypophysed with crude carp pituitary extract (CCPE). Approximately 82% of the females responded positive to the treatment. The egg was opaque, demersal, round, yellow and adhesive. Egg stripping was done at 212 hour-degrees (= 8.2 h) after application of the second dose of CCPE (water temperature = 25-26 ºC). Hatching of the larvae occurred at 1022 hour-degrees (= 42.2 h), after fertilization of the eggs (water temperature =24-25 ºC). Fertilization rate of the eggs was 72%. Absolute fecundity (AF), initial fertility (IF) and final fertility (FF) in relation to the females' body weight are expressed, respectively, by the equations: AF = - 33993 + 122308 Wt (r² = 0.88), IF = - 14823 + 58619 Wt (r² = 0.71) and FF = - 6553 + 29741 (r² = 0.61)

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