scholarly journals Anthropic influence in the water quality of the river basin that supplies the Pato Branco Municipality-PR

2009 ◽  
Vol 52 (1) ◽  
pp. 221-232 ◽  
Author(s):  
William César Polônio Machado ◽  
Valter Antonio Becegato ◽  
André Virmond Lima Bittencourt
Keyword(s):  
River Basin ◽  
Height Difference ◽  
Data Set ◽  
Total N ◽  
Physico Chemical ◽  
Anthropic Influence ◽  
Hydrological Cycles ◽  
Nitrate And Nitrite ◽  
Monitoring Stations

The Pato Branco river basin, which supplies water to Pato Branco city (70,000 inhabitants) in southwestern Paraná State, was monitored during two hydrological cycles, totaling 22 campaigns at two monitoring stations on the Conrado river: the Conrado station upstream (RC01) and the Conrado station downstream (RC02). The main characteristics of the basin here: area - 29.69 km², length - 9,300 m, height difference - 170 m, declivity - 18.62 m km-1, and concentration time - 102 min. Physico-chemical variables were analyzed, using samples collected after a minimum three-day period without rain. The data set comprising seven variables yielded the following averages respectively for monitoring stations RC01 and RC02: variables that characterized the organic matter: BOD5 (5.2 - 4.31mg L-1 O2) and COD (11.04 - 11.2 L-1 O2), and variables that characterized the eutrophication processes: ammoniacal N (0.16 - 0.09 mg L-1 N); nitrate (0.67 - 0.78 mg L-1 N); nitrite (0.06 - 0.029 mg L-1 N); total N (0.48 - 0.33 mg L-1 N), and total phosphorous (0.13 - 0.07 mg L-1). The lowest and the highest variation coefficients for data downstream and upstream corresponded to: nitrate and nitrite (46.1 and 166%); phosphorous and nitrite (56.8 and 229.6%).

Modelling chloride-discharge relationships in Krishna river basin

2003 ◽  
Vol 48 (7) ◽  
pp. 57-63 ◽  
Author(s):  
M.C. Sekhar ◽  
Ch. Indira
Keyword(s):  
River Basin ◽  
Pollution Control ◽  
South India ◽  
Control Strategies ◽  
Linear Regression Analysis ◽  
Large River ◽  
Model Parameters ◽  
Source Contributions ◽  
Monitoring Stations

Chloride discharge relationships at several monitoring stations on the River Krishna in South India are investigated, both qualitatively and quantitatively, to identify probable source contributions. The chloride behaviour along the waterway is studied in detail to assess the source contributions at various monitoring stations falling within the study area. Seasonal variations in the intensity of rainfall cause wide variations in the quality of the River Krishna. As there is strong seasonal dependence between the flow in the river and chlorides, seasonal models are developed for prediction of concentrations and loads. Linear regression analysis is carried out to determine the model parameters. The predicted concentrations and loads are in agreement with the observed values within the uncertainty of data. As the area is characterized by distinct dry and wet seasons (based on rainfall distribution over the year), mass balances are used to differentiate between point and non-point source contributions to the river. In large river basins, monitoring all individual sources is difficult and/or impossible and expensive; hence the presented approach based on receiving water quality and flow serves as an alternative for modeling chlorides in the river basin. Results of the study can be used to emphasise water pollution control strategies.

scholarly journals Physicochemical Quality of the water Table of Temara the Salted Rabat Region Kenitra, Morocco

2019 ◽  
Vol 8 (10) ◽  
pp. 1371-1374
Keyword(s):  
Physicochemical Characterization ◽  
Chloride Content ◽  
International Standards ◽  
World Health ◽  
Physicochemical Quality ◽  
Physico Chemical ◽  
Health Organization ◽  
Nitrate And Nitrite ◽  
The Impact

Water is a vital element for the development and maintenance of life on our planet, for which it is necessary to preserve and ensure the continual persistence of water, not only to provide man with a sufficient quantity for these needs but to assure him an ir upright quality of this water. The main objective of this work is to evaluate the physicochemical quality of the water of the Temara water and the comparison of this quality with Moroccan and international standards. Physico-chemical analyzes showed true variations in the different parameters studied, related to the impact of agricultural activities. The physicochemical characterization of the samples revealed a pH close to neutrality and relatively high salt contents. The chloride content was between 14.20 and 958.5 mg / l. For nitrate and nitrite load varies and 0.5 mg/L and 5.7 mg / L. These parameters of pollution were relatively high , compared to the average concentrations usually met for Moroccan drinking .The results obtained clearly exceed the standards of WHO (World Health Organization). Effluents therefore constitute a health risk. In conclusion, the pretreatment of these waters is strongly recommended.

The aquatic oligochaetes (Annelida: Clitellata) of eight lakes in the Aşği Firat River Basin (Lower Euphrates, Turkey)

Biologia ◽  
2016 ◽  
Vol 71 (1) ◽  
Author(s):  
Seval Aras ◽  
Özlem Fındik
Keyword(s):  
River Basin ◽  
Principal Component ◽  
Point Sources ◽  
Eastern Anatolia ◽  
Chemical Parameters ◽  
Aquatic Oligochaetes ◽  
Physico Chemical ◽  
The Family ◽  
Species Composition And Distribution

AbstractThe Aşağ Fırat River is located in the south-eastern Anatolia, Turkey. The water quality of the Aşağ Fırat River basin has been degrading for some time, primarily as the result of pollutants associated with the discharges from numerous domestic and agricultural point sources. Aquatic macroinvertebrate samples were collected from eight lakes conducted by using both hand-nets and an Ekman-Birge grab sampler during the summer and autumn of 2014, focusing on the species composition and distribution of aquatic oligochaetes in eight lakes of the Aşağ Fırat River basin, and their relationships with physico-chemical parameters measured in those lakes using Principal Component Analysis. Results of analyses of all identified benthic macroinvertebrates clearly indicate the percent dominance of oligochaetes in benthic samples in the eight dam lakes that were sampled: Hacıhıdır lake (62.9%); Atatürk lake (49.6%); Üçöz lake (28.9%); Dumluca lake (22.01%); Seve lake (13.9%); Çat lake (8.5%); Karakaya lake (7.8%) and Birecik lake (5%). During this study, 1044 oligochaete specimens representing 10 species of two subfamilies within the family Naididae were identified. The most abundant taxa were

scholarly journals A Study of the Spatial Difference of the Soil Quality of The Mun River Basin during the Rainy Season

2019 ◽  
Vol 11 (12) ◽  
pp. 3423 ◽  
Author(s):  
Chunsheng Wu ◽  
Qingsheng Liu ◽  
Guoxia Ma ◽  
Gaohuan Liu ◽  
Fang Yu ◽  
...  
Keyword(s):  
Soil Quality ◽  
River Basin ◽  
Rainy Season ◽  
Crop Production ◽  
Soil Condition ◽  
Soil Conditions ◽  
Eastern Region ◽  
Data Set ◽  
Main Period

The Mun River basin is one of the main grain-producing areas of Thailand, and the rainy season is the main period for crop planting after being idle during the dry season. However, the soil conditions are variable, so an assessment of soil quality during the rainy season is necessary for improving soil condition and crop production. The aim of this study was to conduct a soil quality assessment based on soil samples. To attain that, a minimum data set theory was used to screen evaluation indicators and geographically weighted regression was performed to obtain spatial interpolations of indicators, while the fuzzy logic model was used to determine the soil quality results. The results showed that the contents of indicators had similar spatial trends as their contents declined from the western to the eastern region of the basin. The soil quality results showed that the poor soil was in the middle of the basin, where the main land use is paddy fields, and the good soil was in the southwest of the basin, where forests and dry fields are widely distributed. The results indicated that the soil quality in the Mun River basin varied greatly, especially for farmland, so these findings will be helpful for improving soil conditions and grain production in the Mun River basin.

scholarly journals Effect of Different Water Qualities On Clarias Gariepinus Growth And Survival

2018 ◽  
Vol 1 (2) ◽  
pp. 78-84
Author(s):  
T. S. Imam ◽  
Z. D Abdullahi ◽  
A. Sani
Keyword(s):  
Clarias Gariepinus ◽  
Chemical Parameters ◽  
Poor Growth ◽  
Growth And Survival ◽  
Quality Of Water ◽  
Physico Chemical ◽  
Poor Water Quality ◽  
Slight Growth ◽  
Nitrate And Nitrite

Growth and survival of Clarias gariepinus in different water qualities were investigated. Initially, water of equal quality was used for the experiment, later the quality of water varies due to period of water change, (daily-T4, weekly-T3, bi-weekly-T2 and monthly-T1). Physico-chemical parameters were analyzed. Two hundred and forty (240) seven weeks old fingerlings of C. gariepinus were randomly distributed into 12 plastic tanks. Poor growth of C. gariepinus was observed in the treatment tanks (T1, T2 and T3), compared with growth of fish in the control (T4) which was progressive as indicated by the higher value of condition factor. Treatment tanks had significantly (P < 0.05) higher EC, TDS, Turbidity, Ammonia, Nitrate and Nitrite and significantly (P < 0.05) lower DO than culture water in control container. Slight growth was recorded for fish in T1 and T2 until the second week when drop in fish weight was observed. This study has shown that poor water quality can reduce growth rate and survival of C. gariepinus.

scholarly journals Spatial and temporal variation of water quality of a segment of Marikina River using multivariate statistical methods

2017 ◽  
Vol 76 (6) ◽  
pp. 1510-1522 ◽  
Author(s):  
Vanseng Chounlamany ◽  
Maria Antonia Tanchuling ◽  
Takanobu Inoue
Keyword(s):  
Water Quality ◽  
Oxygen Demand ◽  
Quality Parameters ◽  
Point Sources ◽  
Spatial And Temporal Variation ◽  
Wet Season ◽  
Multivariate Statistical ◽  
Data Set ◽  
Monitoring Stations

Payatas landfill in Quezon City, Philippines, releases leachate to the Marikina River through a creek. Multivariate statistical techniques were applied to study temporal and spatial variations in water quality of a segment of the Marikina River. The data set included 12 physico-chemical parameters for five monitoring stations over a year. Cluster analysis grouped the monitoring stations into four clusters and identified January–May as dry season and June–September as wet season. Principal components analysis showed that three latent factors are responsible for the data set explaining 83% of its total variance. The chemical oxygen demand, biochemical oxygen demand, total dissolved solids, Cl− and PO43− are influenced by anthropogenic impact/eutrophication pollution from point sources. Total suspended solids, turbidity and SO42− are influenced by rain and soil erosion. The highest state of pollution is at the Payatas creek outfall from March to May, whereas at downstream stations it is in May. The current study indicates that the river monitoring requires only four stations, nine water quality parameters and testing over three specific months of the year. The findings of this study imply that Payatas landfill requires a proper leachate collection and treatment system to reduce its impact on the Marikina River.

DECOLOURIZATION AND COD REMOVAL OF WASEWATER FROM ETHANOL PRODUCTION PROCESS FROM MOLASSES BY COAGULANTION USING INORGANIC ALUM

2010 ◽  
Vol 13 (3) ◽  
pp. 92-102
Author(s):  
Trung Duc Le
Keyword(s):  
Ethanol Production ◽  
Oxygen Demand ◽  
Cod Removal ◽  
Treated Wastewater ◽  
Treatment Processes ◽  
Physico Chemical ◽  
Biological Methods ◽  
Treatment Step ◽  
Main Material

The industrial production of ethanol by fermentation using molasses as main material that generates large quantity of wastewater. This wastewater contains high levels of colour and chemical oxygen demand (COD), that may causes serious environmental pollution. Most available treatment processes in Vietnam rely on biological methods, which often fail to treat waste water up to discharge standard. As always, it was reported that quality of treated wastewater could not meet Vietnameses discharge standard. So, it is necessary to improve the treatment efficiency of whole technological process and therefore, supplemental physico-chemical treatment step before biodegradation stage should be the appropriate choice. This study was carried out to assess the effect of coagulation process on decolourization and COD removal in molasses-based ethanol production wastewater using inorganic coaglutant under laboratory conditions. The experimental results showed that the reductions of COD and colour with the utilization of Al2(SO4)3 at pH 9.5 were 83% and 70%, respectively. Mixture FeSO4 – Al2(SO4)3 at pH 8.5 reduced 82% of colour and 70% of COD. With the addition of Polyacrylamide (PAM), the reduction efficiencies of colour, COD and turbidity by FeSO4 – Al2(SO4)3 were 87%, 73.1% and 94.1% correspondingly. It was indicated that PAM significantly reduced the turbidity of wastewater, however it virtually did not increase the efficiencies of colour and COD reduction. Furthermore, the coagulation processes using PAM usually produces a mount of sludge which is hard to be deposited.

Physico-Chemical Assessment of Groundwater Quality of Ahmednagar Industrial Area

2011 ◽  
Vol 4 (4) ◽  
pp. 228-230
Author(s):  
Patil S.S Patil S.S ◽  
◽  
Gandhe H.D Gandhe H.D ◽  
Ghorade I.B Ghorade I.B
Keyword(s):  
Groundwater Quality ◽  
Industrial Area ◽  
Physico Chemical ◽  
Chemical Assessment

Physico-Chemical Analysis of Groundwater and Effect of Climatic Change in Angul-Talcher Area

2018 ◽  
Vol 6 (12) ◽  
pp. 26
Author(s):  
Aliva Bera ◽  
D.P. Satapathy
Keyword(s):  
Water Resources ◽  
Linear Regression ◽  
Regression Model ◽  
Climatic Change ◽  
Linear Regression Model ◽  
Ann Model ◽  
Quality Of Water ◽  
Physico Chemical ◽  
Simulation Based

In this paper, the linear regression model using ANN and the linear regression model using MS Excel were developed to estimate the physico-chemical concentrations in groundwater using pH, EC, TDS, TH, HCO3 as input parameters and Ca, Mg and K as output parameters. A comparison was made which indicated that ANN model had the better ability to estimate the physic-chemical concentrations in groundwater. An analytical survey along with simulation based tests for finding the climatic change and its effect on agriculture and water bodies in Angul-Talcher area is done. The various seasonal parameters such as pH, BOD, COD, TDS,TSS along with heavy elements like Pb, Cd, Zn, Cu, Fe, Mn concentration in water resources has been analyzed. For past 30 years rainfall data has been analyzed and water quality index values has been studied to find normal and abnormal quality of water resources and matlab based simulation has been done for performance analysis. All results has been analyzed and it is found that the condition is stable. 

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