scholarly journals Forecasting Physical, Chemical and Biological Water Quality Parameters of Kotmale, Victoria, Randenigala and Rantambe Reservoirs Using DYRESM-CAEDYM Model

2005 ◽  
Author(s):  
K.G.A.M.C.S. Abeysinghe
Keyword(s):  
Water Quality ◽  
Quality Parameters ◽  
Water Quality Parameters ◽  
Biological Water ◽  
Physical Chemical ◽  
Biological Water Quality

scholarly journals PHYSICOCHEMICAL AND BIOLOGICAL WATER QUALITY ASSESSMENT OF LAKE HAWASSA FOR MULTIPLE DESIGNATED WATER USES

2016 ◽  
Vol 9 (2) ◽  
pp. 146-157
Author(s):  
Adimasu Woldesenbet Worako
Keyword(s):  
Water Quality ◽  
Water Quality Assessment ◽  
Quality Parameters ◽  
Ethiopian Rift ◽  
Trophic State Index ◽  
Monthly Basis ◽  
Biological Water ◽  
State Index ◽  
Rift Valley Lakes ◽  
Biological Water Quality

Lake Hawassa is one of the Major Ethiopian Rift Valley Lakes which is situated in southern regional state, which has a closed basin system and receives water from only Tikurwuha River and runoff from the catchment. Quality of the lake water is vital for the surrounding community for proper and safe use of the lake. The present study was designed to examine the physicochemical and biological water quality suitability for multiple purposes and to determine trophic state index of the lake for a period of three months from December to February, 2011/12. Water samples were collected from the lake on monthly basis and analyzed for all water quality parameters by using standard methods. Data analysis was performed by descriptive, multivariate analysis (MANOVA%

scholarly journals Potensi budidaya ikan di Waduk Embung Klamalu Kabupaten Sorong Provinsi Papua Barat: Kajian kualitas fisika kimia air

2013 ◽  
Vol 1 (3) ◽  
Author(s):  
Agustina Frasawi ◽  
Robert J Rompas ◽  
Juliaan Ch. Watung
Keyword(s):  
Carbon Dioxide ◽  
Water Quality ◽  
Dissolved Oxygen ◽  
Good Condition ◽  
Fish Farming ◽  
Quality Parameters ◽  
Water Quality Parameters ◽  
Total Alkalinity ◽  
Physical Chemical ◽  
Papua Barat

The objective of this research was to measure and analyze the water quality parameters including temperature, brightness, pH, dissolved oxygen, total alkalinity, carbon dioxide and BOD in reservoir Embung Klamalu Sorong regency, and to know the factors that affected the water quality of Embung Klamalu. Measurement of water quality parameters was done in situ for temperature, brightness, pH and in laboratory for dissolved oxygen, total alkalinity, carbon dioxide, and BOD. The results showed the temperature at the five observation stations ranged from 26.2 to 29.8 0C, brightness 38 to 46 cm, pH 7.20 to 8.48 mg /L, dissolved oxygen from 7.20 to 8.48 mg / L, alkalinity 100 to 150 mg /L, carbon dioxide from 25.90 to 28.95 mg / L, BOD from 0.20 to 0.38. Refers to the standards of water quality according to the PP. 82, 2001, it could be concluded that water physical-chemical qualities in fish farming locations in the Village Klamalu were still in good condition. Keywords: Water physical-chemical quality, aquaculture, waduk Embung Klamalu

Impact of Lagoon Effluent on an Inland Stream – A 10 Year Perspective

1989 ◽  
Vol 21 (2) ◽  
pp. 289-292 ◽  
Author(s):  
G. P. Skerry ◽  
J. G. Parker
Keyword(s):  
Water Quality ◽  
Water Body ◽  
Inland Waterways ◽  
Inland River ◽  
Biological Water ◽  
Physical Chemical ◽  
Treated Effluent ◽  
Receiving Stream ◽  
The Impact ◽  
Biological Water Quality

The discharge of lagoon treated effluent to inland waterways has long been of contention in relation to the impact of residual algal cells and nutrients in the receiving water body, especially a water body used extensively for recreation. This paper examines the pre lagoon and post lagoon discharge effects on water quality in a major inland river over a ten year monitoring period. The impact of a lagoon discharge flow of up to 20 ML/day during summer conditions is assessed in relation to effect on receiving stream physical, chemical and biological water quality indicators and implications for management are assessed and evaluated.

scholarly journals Comparative evaluation of the biofloc system versus the recirculation system with Macrobrachium amazonicum / Avaliação comparativa do sistema bioflocos versus o sistema de recirculação com Macrobrachium amazonicum

2021 ◽  
Vol 7 (11) ◽  
pp. 105392-105403
Author(s):  
Cananda Cris Cavalcante Ferreira ◽  
Eliandra de Freitas Sai ◽  
Elton Nunes Britto ◽  
Euclides Pereira e Silva ◽  
Igor Bartolomeu Alves de Barros ◽  
...  
Keyword(s):  
Water Quality ◽  
Survival Rate ◽  
Comparative Evaluation ◽  
Quality Parameters ◽  
Initial Evaluation ◽  
Water Quality Parameters ◽  
Physical Chemical ◽  
System Versus ◽  
Recirculation System ◽  
Macrobrachium Amazonicum

The aim of this study was to evaluate the efficiency of the biofloc system versus the recirculation system using the native Amazonian freshwater shrimp Macrobrachium amazonicum (Heller, 1862) as a cultivation organism.  In this initial evaluation, the water quality parameters of each system were measured and the survival rate in the biofloc system showed similar values for M. amazonicum grown in a super-intensive recirculation system with averages values of 60%. The results indicated that both systems were within acceptable limits in terms of parameters (physical-chemical) and the survival rate of both systems showed similar values for M. amazonicum.

scholarly journals Keterkaitan Hubungan Parameter Kualitas Air Pada Budidaya Intensif Udang Putih (Litopenaeus vannamei)

2021 ◽  
Vol 12 (1) ◽  
pp. 18-28
Author(s):  
Heri Ariadi ◽  
Abdul Wafi ◽  
Muhammad Musa ◽  
Supriatna Supriatna
Keyword(s):  
Water Quality ◽  
Quality Parameters ◽  
Shrimp Farming ◽  
Water Quality Parameters ◽  
Test Results ◽  
Chemical Parameters ◽  
Shrimp Culture ◽  
Physical Chemical ◽  
Microbiological Parameters ◽  
The Relationship

Water quality parameters play an important role in intensive pond ecosystems. The purpose of this study was to determine the relationship between of water quality parameters in intensive shrimp farming of L. vannamei. This research was carried out for 95 days of intensive shrimp farming in PT. Menjangan Mas Nusantara Company, Banten, with the physical, chemical, and microbiological parameters of water as the main reference object of observation. The results showed that during the shrimp culture period the pond water quality parameter concentration was considered to be quite optimal with a stable fluctuation trend, except for the salinity and TOM parameters whose values ​​were above the water quality standard. Correlation test results state that between the physical chemical parameters have a strong and heterogeneous relationship, with the strongest parameters of pH, phosphate, nitrite, and TOM. As for the microbiological variables, the correlation of physical chemistry parameters of water is considered to be very weak, because from the correlation test results, only DO parameters showed the correlation with microbiological parameters. The conclusion of this study, that during intensive shrimp culture period, the physical and chemical parameters of water have a strong correlation of association between one another and the highest are pH, phosphate, nitrite, and TOM, but only dissolved oxygen parameters that show the relationship correlation with microbiological parameters.

scholarly journals PHYSICOCHEMICAL AND BIOLOGICAL WATER QUALITY ASSESSMENT OF LAKE HAWASSA FOR MULTIPLE DESIGNATED WATER USES

2016 ◽  
Vol 9 (2) ◽  
pp. 146-157 ◽  
Author(s):  
Adimasu Woldesenbet Worako
Keyword(s):  
Water Quality ◽  
Water Quality Assessment ◽  
Quality Parameters ◽  
Ethiopian Rift ◽  
Trophic State Index ◽  
Monthly Basis ◽  
Biological Water ◽  
State Index ◽  
Rift Valley Lakes ◽  
Biological Water Quality

Lake Hawassa is one of the Major Ethiopian Rift Valley Lakes which is situated in southern regional state, which has a closed basin system and receives water from only Tikurwuha River and runoff from the catchment. Quality of the lake water is vital for the surrounding community for proper and safe use of the lake. The present study was designed to examine the physicochemical and biological water quality suitability for multiple purposes and to determine trophic state index of the lake for a period of three months from December to February, 2011/12. Water samples were collected from the lake on monthly basis and analyzed for all water quality parameters by using standard methods. Data analysis was performed by descriptive, multivariate analysis (MANOVA%

A set of marine microalgae bioassays for the evaluation of biological water quality in enclosure areas in south of Spain

2003 ◽  
Vol 47 (9) ◽  
pp. 85-92 ◽  
Author(s):  
M.C. Garrido-Pérez ◽  
A. Acevedo-Merino ◽  
E. Nebot-Sanz ◽  
D. Sales-Márquez
Keyword(s):  
Water Quality ◽  
Iberian Peninsula ◽  
Toxicity Tests ◽  
Chemical Parameters ◽  
Biological Water ◽  
Physical Chemical ◽  
Test Organisms ◽  
Taxonomic Range ◽  
Receiving Waters ◽  
Biological Water Quality

The aim of this study has been the identification of the nutritive status (oligotrophy and eutrophy) in four enclosure areas from Gulf of Cadiz (Southwest Iberian Peninsula - Europe) by means of a battery of water column toxicity tests. The test organisms were four marine microalgaes which comprised a wide taxonomic range. Growth tests with receiving waters from the four study areas were carried out under two nutritive conditions; with and without additional nutrient-enriched medium. The results of both bioassays were used to define a new eutrophication index (IE). The IE index obtained presents a good correlation with the traditional physical-chemical parameters in the enclosure areas; nevertheless in open waters where the dilution processes are more important the results show less correlation.

scholarly journals Survey of Physical, Chemical, and Microbial Water Quality in Greenhouse and Nursery Irrigation Water

2012 ◽  
Vol 22 (6) ◽  
pp. 778-786 ◽  
Author(s):  
Dustin P. Meador ◽  
Paul R. Fisher ◽  
Philip F. Harmon ◽  
Natalia A. Peres ◽  
Max Teplitski ◽  
...  
Keyword(s):  
Water Quality ◽  
Irrigation Water ◽  
The United States ◽  
Aerobic Bacteria ◽  
Source Water ◽  
Microbial Water Quality ◽  
Biological Water ◽  
Physical Chemical ◽  
Biological Water Quality

The objective was to analyze the physical, chemical, and biological water quality in horticulture irrigation systems in 24 ornamental plant greenhouses and nurseries in the United States. At each greenhouse or nursery, water was collected from up to five points (“Sample Types”) which included 1) “Source” from municipal or private well supplies, 2) “Tank” from enclosed storage containers, 3) “Subirrigation” from water applied to crops in ebb-and-flood systems, 4) “Furthest Outlet” that were irrigation emitters most distant from the Source, and 5) “Catchment Basin” from open outdoor retention areas. On average, Source water had the highest physical and microbial quality of Sample Types including the highest ultraviolet (UV) light transmission at 86%, lowest total suspended solids (TSS) at 3.1 mg·L−1, and lowest density of aerobic bacteria with 1108 cfu/mL of water. Average quality of recycled water from Subirrigation or Catchment Basins did not meet recommended levels for horticultural irrigation water for UV transmission (68% to 72% compared with recommended 75%), microbial counts (>100,000 cfu/mL compared with recommended <10,000 cfu/mL), and chemical oxygen demand (COD) (48.2 to 61.3 mg·L−1 compared with recommended <30 mg·L−1). Irrigation water stored in Tanks or applied at Furthest Outlets had lower physical and biological water quality compared with Source water. Level of aerobic bacteria counts highlighted a risk of clogged microirrigation emitters from microbial contaminants, with highest bacteria levels in recirculated irrigation water. The physical, chemical, and microbial water quality results indicate a need for more effective water treatment to improve biological water quality, particularly with recirculated irrigation.

Investigation of Some Water Quality Parameters of Pond Water under Mymensingh Municipality

2015 ◽  
Vol 8 (1) ◽  
pp. 85-89
Author(s):  
F Zannat ◽  
MA Ali ◽  
MA Sattar
Keyword(s):  
Water Quality ◽  
Water Samples ◽  
Chemical Properties ◽  
Pond Water ◽  
Quality Parameters ◽  
Water Quality Parameters ◽  
Urban Region ◽  
Mn Toxicity ◽  
Ph Values ◽  
Drinking Water Standard

A study was conducted to evaluate the water quality parameters of pond water at Mymensingh Urban region. The water samples were collected from 30 ponds located at Mymensingh Urban Region during August to October 2010. The chemical analyses of water samples included pH, EC, Na, K, Ca, S, Mn and As were done by standard methods. The chemical properties in pond water were found pH 6.68 to 7.14, EC 227 to 700 ?Scm-1, Na 15.57 to 36.00 ppm, K 3.83 to 16.16 ppm, Ca 2.01 to 7.29 ppm, S 1.61 to 4.67 ppm, Mn 0.33 to 0.684 ppm and As 0.0011 to 0.0059 ppm. The pH values of water samples revealed that water samples were acidic to slightly alkaline in nature. The EC value revealed that water samples were medium salinity except one sample and also good for irrigation. According to drinking water standard Mn toxicity was detected in pond water. Considering Na, Ca and S ions pond water was safe for irrigation and aquaculture. In case of K ion, all the samples were suitable for irrigation but unsuitable for aquaculture.J. Environ. Sci. & Natural Resources, 8(1): 85-89 2015

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