Pollution Assessment of the Physico-Chemical Properties of the Lagos Lagoon

2021 ◽  
Vol 16 (3) ◽  
pp. 1-7
Author(s):  
O.O. Loto ◽  
A.O. Ajibare
Keyword(s):  
Water Quality ◽  
Chemical Properties ◽  
Pollution Assessment ◽  
Anthropogenic Sources ◽  
Pollution Indices ◽  
Physico Chemical ◽  
Lagos Lagoon ◽  
High Pollution ◽  
Heavy Pollution ◽  
Cu And Zn

Lagos lagoon has received wastewater discharged from different anthropogenic sources. Therefore, this study determined the water  quality and identified its pollution status. Water quality index (WQI), several heavy metal pollution indices as well as single factor and  comprehensive pollution indices were applied. The obtained data revealed that physicochemical parameter varied between 24.00±1.41 and 27.00±0.71°C for temperature; 2.50±2.83 and 10.50±0.71‰ for salinity; 3.90±0.99 and 4.60±0.85 mg/l for dissolved oxygen; 7.26±0.25 and 8.38±0.66 for pH; 3.50±0.71 and 10.00±7.07mg/l for BOD. The results also revealed that sulphate, phosphate and nitrate had means of  10.00±10.45mg/l, 0.85±1.04mg/l and 11.11±17.88 mg/l respectively while Pb, Zn, Cu and Hg had means of 0.25±0.49mg/l, 25.49±44.27mg/l, 1.88±2.94mg/l and 0.00±0.00mg/l respectively. SPI classified pH, BOD, Cu and Zn within the ‘medium pollution’ category while nitrate and phosphate indicated heavy pollution of the lagoon. The PI revealed that Cu and Zn had moderate and slight effect on the aquatic  environment respectively while Pb and Hg had no effect on the ecosystem. The mean WQI revealed that the lagoon was classified to be good for aquatic biota despite that HEI and Cd revealed that there was high pollution of heavy metals in the lagoon. The CPI described the lagoon as slightly polluted.

scholarly journals Groundwater physico-chemical properties and water quality changes in shallow aquifers in arid saline wetlands, Ouargla, Algeria

2021 ◽  
Vol 11 (5) ◽  
Author(s):  
Fethi Medjani ◽  
Mohamed Djidel ◽  
Sofiane Labar ◽  
Louiza Bouchagoura ◽  
Chouaib Rezzag Bara
Keyword(s):  
Water Quality ◽  
Chemical Properties ◽  
High Water ◽  
Quality Changes ◽  
Shallow Aquifers ◽  
Shallow Water Table ◽  
Chemical Mechanisms ◽  
Desert Region ◽  
Physico Chemical ◽  
Hypersaline Water

AbstractShallow aquifers are vulnerable to natural geogenic processes as well as anthropogenic influences, and this is especially apparent in desert regions. Within arid and hyperarid climates, evaporation is a controlling hydrologic process leads to an important increase in the concentration of dissolved minerals of both surface water and groundwater. In groundwater, this increase is not only dependent on shallow water table depth, but also on the hydraulic properties of sediments present within the unsaturated zone of the aquifer itself. The main objective of this research is to investigate possible mechanisms that might influence water quality changes under seasonal conditions in shallow aquifers situated within the Saharan desert region of Algeria. In this work, we focus on observed changes in hydrogeochemical characteristics, and the possible responsible processes. Under arid conditions, high water mineralization results in hypersaline water or brine solution formation within shallow aquifers. Due to active physico-chemical mechanisms such as Na+/Ca2+ ion exchange, the successive precipitation of calcite, gypsum, mirabilite or blœdite and halite is induced. Biological processes were also observed as prevalent; evidenced by large measured variations in CO2 load concentrations. These processes contributed to an inverse relationship between CO2 and O2 concentrations within the shallow aquifers studied.

Fish Abundance and Physico-chemical Properties of Matingao River and Marbel River, Mount Apo Natural Park, Mindanao, Philippines

2019 ◽  
Vol 23 (2) ◽  
Author(s):  
Victoria Quimpang ◽  
◽  
Maricris Cudal ◽  
Einstine Opiso ◽  
Romeo Tubongbanua, Jr. ◽  
...  
Keyword(s):  
Water Quality ◽  
Freshwater Fish ◽  
Chemical Properties ◽  
Fish Abundance ◽  
Natural Park ◽  
Physico Chemical

freshwater fish, introduced, native, turbidity, water quality

scholarly journals Physico-chemical properties of Dhepa River in Dinajpur District of Bangladesh

2015 ◽  
Vol 6 (1) ◽  
pp. 59-67
Author(s):  
K Rakiba ◽  
Z Ferdoushi
Keyword(s):  
Water Quality ◽  
Dissolved Oxygen ◽  
Ph Value ◽  
Sampling Site ◽  
Chemical Properties ◽  
Quality Parameters ◽  
P Concentration ◽  
Physical Chemical ◽  
Physico Chemical ◽  
Buffer Condition

Among different water quality parameters dissolved oxygen, transparency, pH, PO4-P and depth varied significantly among the sampling sites. The pH value in the present investigation remained a buffer condition (6.50- 7.90). Dissolved oxygen was ranges from 3.80 to 11.60 mg/l throughout the study periods. PO4-P concentration was observed highest (0.30 mg/l) in sampling site 2. On the basis of physical, chemical aspects sampling site 3 and sampling site 5 (situated in gosaipur and chandandoho) found in better condition in terms of limnological aspects. However, it could be concluded that Dhepa River will play important role in riverine fisheries and for further fisheries management.DOI: http://dx.doi.org/10.3329/jesnr.v6i1.22041 J. Environ. Sci. & Natural Resources, 6(1): 59-67 2013

Is freshwater quality adequately defined by physico-chemical components? Results from two drought-affected estuaries on the east coast of South Africa

2001 ◽  
Vol 52 (3) ◽  
pp. 267 ◽  
Author(s):  
C. F. Mackay ◽  
D. P. Cyrus
Keyword(s):  
Water Quality ◽  
East Coast ◽  
Chemical Properties ◽  
Benthic Fauna ◽  
Chemical Components ◽  
Physico Chemical ◽  
Marine Influence ◽  
Chemical Conditions ◽  
Biological Component ◽  
Two Populations

From 1992 to 1994 the physico-chemical conditions of two systems on the east coast of southern Africa shifted from estuarine to freshwater as a result of mouth closure during the prevailing drought. Although there was gradual colonization by freshwater benthic invertebrates, both systems were dominated by estuarine benthic infauna. The upper reaches of the Siyaya Estuary were entirely characterized by freshwater taxa (95%) by 1994, whereas Nhlabane Estuary showed a smaller increase in the number of these fauna. Non-metric multidimensional scaling plotted benthic populations as separate groups each year. These groups were not the result of a gradual shift in benthic fauna from an estuarine towards a freshwater bias. Rather, the upper estuarine reaches were dominated by taxa characteristic of freshwater environments, despite similar water quality conditions along all reaches. Three quarters of the zoobenthic communities (expressed as density m–2) were still estuarine in nature. The two populations were comparable to those occurring in nearby freshwater coastal lakes, which have been subject to marine influence in geological history. It was concluded that assessment of the biological component in addition to the physico-chemical properties should be considered when defining water quality in such systems.

scholarly journals Assessment of Groundwater Quality of Ilorin Metropolis using Water Quality Index Approach

1970 ◽  
Vol 12 (1) ◽  
pp. 18-21
Author(s):  
JA Olatunji ◽  
OA Odediran ◽  
RI Obaro ◽  
PI Olasehinde
Keyword(s):  
Water Quality ◽  
Water Quality Index ◽  
Quality Index ◽  
Chemical Properties ◽  
Total Hardness ◽  
Physico Chemical ◽  
Index Approach ◽  
Two Samples ◽  
Total Dissolved Solid

Groundwater as a source of potable water is becoming more important in Nigeria. Therefore, the need to ascertain the continuing potability of the sources cannot be over emphasised. This study is aimed at assessing the quality of selected groundwater samples from Ilorin metropolis, Nigeria, using the water quality index (WQI) method. Twenty two water samples were collected, 10 samples from boreholes and 12 samples from hand dug wells. All these were analysed for their physico – chemical properties. The parameters used for calculating the water quality index include the following: pH, total hardness, total dissolved solid, calcium, fluoride, iron, potassium, sulphate, nitrate and carbonate. The water quality index for the twenty two samples ranged from 0.66 to 756.02 with an average of 80.77. Two of the samples exceeded 100, which is the upper limit for safe drinking water. The high values of WQI from the sampling locations are observed to be due to higher values of iron and fluoride. This study reveals that the investigated groundwaters are mostly potable and can be consumed without treatment. Nonetheless, the sources identified to be unsafe should be treated before consumption.KEYWORDS: groundwater, water quality index, potability, physico - chemical, parameter

scholarly journals Studies on Sediment Physico-Chemical Properties of the Ulhas River Flowing along Dombivli City near Mumbai

2015 ◽  
Vol 52 ◽  
pp. 11-21
Author(s):  
Amol M. Jadhav ◽  
Pravin U. Singare
Keyword(s):  
Industrial Waste ◽  
Waste Treatment ◽  
Chemical Properties ◽  
Control Measures ◽  
Pollution Level ◽  
Pollution Load ◽  
Residential Areas ◽  
Physico Chemical ◽  
Heavy Pollution

Ulhas River which is one of the most polluted rivers of Mumbai receives heavy pollution load from the nearby Dombivali industrial belt. Previous studies reported along the Dombivali industrial belt has indicated that the pollution level is so much alarming that it has created threat to nearby residential areas and also to the Ulhas River flowing in the outskirts of the Dombivali City. It is feared that the toxic chemicals present in the industrial waste might affect the sediment ecosystem of the river. Hence this has provoked us to carry the systematic and detailed study of physico chemical properties of the sediment samples collected along the Ulhas River. The study was done during the year 2012 and 2013, at the sites where the industrial discharge from Dombivli industrial belt Phase I and Phase II joins the Ulhas River. The study was performed to understand the physico chemical properties such as pH, alkalinity, chloride and phosphates. Results of the study reveal that there is an urgent requirement for systematic and regular monitoring of pollution level along the Ulhas River which will further help in improving the industrial waste treatment procedure adopted, along the Dombivli industrial belt. It is expected that such scientific studies will be useful to determine the extent of pollution control measures required in order to avoid long term irreparable damage to the Ulhas River ecosystem.

scholarly journals Water Quality of Major Ponds of Comilla Town

1970 ◽  
Vol 45 (1) ◽  
pp. 57-62
Author(s):  
SZKM Shamsad ◽  
Md Didar-Ul-Alam ◽  
ASM Shamsuddoha ◽  
Mohammad Naushad Alam
Keyword(s):  
Water Quality ◽  
Community Health ◽  
Key Words ◽  
Water Samples ◽  
Chemical Constituents ◽  
Chemical Properties ◽  
Organic Wastes ◽  
Dry Period ◽  
Physico Chemical

Some important physico-chemical properties of water of major ponds of Comilla Town were studied to evaluate the water quality. Eight water samples were collected during the dry period (March 2005) from eight major ponds of Comilla Town (Ranir dighi, Mandir dighi, Nanuar dighi, Fauzdari dighi, Modina dighi, Dargabari dighi, Darma Sagar and Thakurpara). The result revealed that all the chemical constituents, except a few, are beyond the recommended limit for different uses. Higher value of pH (at Dargabari dighi, Darma Sagar dighi), OM (at Thakurpara dighi, Fauzdari dighi and Modina dighi), NH4+ concentration (at Ranir dighi, Mandir Dighi, Fauzdari dighi, Modina dighi and Dargabari dighi), and lower value of DO (at Fauzdari dighi and Modina dighi) may due to continuous disposal of kitchen wastes, organic wastes, sewage running and fall of twigs as well as extensive used for bathing, washing cloths and utensils etc. All indicate eutrophication and affect community health and hygiene and also create aesthetic problem in the locality. Key words: Ponds; Comilla District; Water quality Eutrophication DOI: 10.3329/bjsir.v45i1.5184 Bangladesh J. Sci. Ind. Res. 45(1), 57-62, 2010

scholarly journals Assessment of Ganges River Water Quality at Allahabad: A case study for the event of Magha Mela

2014 ◽  
Vol 8 (3) ◽  
pp. 8-14
Author(s):  
LN Gupta ◽  
Ram Avtar ◽  
Ameerjeet Singh ◽  
Pankaj Kumar ◽  
Emmanuel Mutisya ◽  
...  
Keyword(s):  
Water Quality ◽  
Ganges River ◽  
Pollution Load ◽  
Chemical Parameters ◽  
River Ganges ◽  
Physico Chemical ◽  
High Pollution ◽  
Water Quality Status ◽  
The Impact

Considering Ganga River as one of main Holy River in India, millions of people throng to the river to have a holy dip, Aachman (Mouthful of holy water) and cleanse themselves of sins. Magh Mela is a great festival to take place in bank of Triveni (Sangam) at Allahabad and runs more than one and half month, when millions of pilgrims from different regions in India go there for taking a holy bath in Sangam of Ganga. Thus, the bathing in the river during Magh Mela leads to high pollution of the river in comparison to other days such as normal bathing days. This study focused on the water quality status from some selected physico-chemical parameters of River Ganges and the impact of Magh Mela as well as the variation in the river’s flow rate. Results indicate that the pollution load was alarmingly high and the flow of the Ganga had been very poor. Further, the study found that the water was not fit for bathing during the 2012 Magh Mela. DOI: http://dx.doi.org/10.3126/ijls.v8i3.9303 International Journal of Life Sciences Vol.8(3): 2014: 8-14

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