scholarly journals Potability of deep-well water sources in calbayog samar Philippines

2020 ◽  
Vol 09 (01) ◽  
pp. 30-40
Author(s):  
MA Sudaria ◽  
C Burca ◽  
B Francisco ◽  
M Paloma ◽  
K Rodrigo ◽  
...  
Keyword(s):  
Water Sources ◽  
Well Water ◽  
Deep Well

Spray-Tank-Mix Compatibility of Manganese, Boron, and Fungicide: Solution pH and Precipitation1

1993 ◽  
Vol 20 (1) ◽  
pp. 44-49 ◽  
Author(s):  
N. L. Powell
Keyword(s):  
Boric Acid ◽  
Foliar Application ◽  
Water Solution ◽  
Inorganic Salts ◽  
Well Water ◽  
Manganese Sulfate ◽  
Solution Ph ◽  
Deep Well ◽  
Cupric Hydroxide ◽  
Disodium Octaborate Tetrahydrate

Abstract Foliar application of manganese and boron mixed with pesticides in water solution is a common practice for peanut (Arachis hypogaea L.) production. This study was conducted to determine the compatibility of mixing manganese, boron, and leafspot fungicides using water from three sources. Spray mixtures of the chelated manganese salt of ethylene diamine tetra-acetate and the inorganic salts of manganese as manganese sulfate(TECMANGAMTM), manganese sulfate monohydrate, manganese chloride, and manganese nitrate were developed using deep-well water, shallow well water, or distilled water. Boron was added to these mixtures using boric acid or disodium octaborate tetrahydrate. In addition, all combinations were mixed with the leafspot fungicides chlorothalonil or cupric hydroxide plus sulfur. Mixtures were equivalent to recommended rates of manganese, boron, and fungicide applied to the foliage in 140 L ha-1 of spray volume. Measurements were made of solution pH and manganese remaining in solution after filtration. Development of precipitates was noted. In the deep-well water solution (pH = 8.0), addition of manganese sulfate, manganese sulfate monohydrate and manganese chloride caused precipitates to form. Manganese nitrate and chelated manganese solutions did not form precipitates. Addition of disodium octaborate tetrahydrate increased the tank-mix pH for all waters source, and caused increased precipitation of the manganese inorganic salts, but not the chelated manganese. Use of boric acid in the water lowered solution pH, and all manganese sources remained in solution. Spray-tank-mix pH was critical in keeping all manganese inorganic salts in solution. For all pH levels studied (pH 4.6 to 8.4) the chelated manganese remained in solution without formation of a precipitate. Chemical analyses of the filtrate showed that only 75 to 80% of the inorganic salts of manganese remained in solution with disodium octaborate tetrahydrate, while 100% of the chelated manganese salt remained in solution. Inorganic salts of manganese and disodium octaborate tetrahydrate should not be mixed with chlorothalonil, and none of the manganese materials should be mixed with cupric hydroxide plus sulfur as a spray-tank-mixture for foliar application.

scholarly journals The Effectiveness of the Sizerebotif Multimedia Filter Method in Improving the Quality of Dug Well Water to be Clean Water for Communities in Sinjai Regency

2021 ◽  
Vol 9 (E) ◽  
pp. 1224-1227
Author(s):  
Mulyadi Mulyadi ◽  
Zaenab Zaenab ◽  
Ain Khaer ◽  
Zrimurti Mappau ◽  
Adriyani Adam
Keyword(s):  
Manganese Content ◽  
Water Sources ◽  
Silica Sand ◽  
Filter Method ◽  
Well Water ◽  
Clean Water ◽  
Organic Substances ◽  
Dug Wells ◽  
Dug Well

BACKGROUND: Based on the results of laboratory examinations, initial samples taken from one of the clean water sources (dug wells) in Biringere Village, North Sinjai District, results showed that the water sample contained high enough metal ions such as Fe, Mn, hardness, and organic substances which did not meet the requirements as clean water because it still contained levels of Manganese (Mn) 1.68 mg/l. Meanwhile, for organic substances (KMnO4), it is 9876 mg/l. AIM: The purpose of the research was to determine the effectiveness of multimedia filters in improving quality of clean water from the parameters of Mn and KMnO4 in clean water sources (dug wells).. METHODS: The type of research conducted is quasi-experimental by made a filtering processing method with a “Up Flow” flow system, using media consisting of silica sand, zeolite, resin (pine resin), and active carbon in PVC tubes. The population in this study were all dug wells in North Sinjai district. The samples were dug wells located on Biringere Village, North Sinjai District. The samples examined in Center for Environmental Health and disease control of Makassar. RESULTS: The results obtained were that there was a significant change in manganese (Mn) levels of 0.49 mg/l (80.37%). Meanwhile, organic substances (MnO4) amounted to 17.38 mg/l (70.02%). CONCLUSION: Decreasing levels of manganese (Mn) in well water after going through the multimedia filter process above show that the manganese content has met the standard requirements of the Minister of Health Regulation No. 32 of 2017.

scholarly journals Chemical residuality in maize (Zea mays L.) fields irrigated with deep well water

2018 ◽  
Vol 5 (13) ◽  
pp. 111
Author(s):  
Ma. Elizabeth Azpilcueta-Pérez ◽  
Aurelio Pedroza Sandoval ◽  
Ricardo Trejo-Calzada ◽  
Ignacio Sanchez-Cohen ◽  
María Del Rosario Jacobo-Salcedo
Keyword(s):  
Heavy Metals ◽  
Zea Mays ◽  
Zea Mays L ◽  
Residual Analysis ◽  
Maize Plant ◽  
Well Water ◽  
Deep Well ◽  
Fodder Production ◽  
Heavy Metals And Arsenic

The aim was to conduct a residual analysis of the main cationic elements, heavy metals and arsenic in irrigated maize fodder production. Four soil and maize plant samplings were conducted in eight sites in April, May, June and July, 2014. Ca, Na, As, and Pb concentrations were higher in the soil. The As concentration was higher in June and July. La Purísima had a higher As concentration, while Bermejillo, La Galicia and La Rosita had a higher Ca concentration. K, Ca, Pb and Zn had higher concentrations in the maize plant, with Ca, Na and K having highervalues in July and Mg, Pb and Zn being higher in May and July. The content of Ca, Mg, Na and K did not dier among regions; arsenic was higher in Leon Guzmán and La Rosita.

scholarly journals Well Water Site Selection at Local Scale Using Geographical Information System for Flood Victim in Malaysia

2018 ◽  
Vol 50 (2) ◽  
pp. 205
Author(s):  
Koh Liew See ◽  
Nayan Nasir ◽  
Saleh Yazid ◽  
Hashim Mohmadisa ◽  
Mahat Hanifah ◽  
...  
Keyword(s):  
Water Supply ◽  
Spatial Data ◽  
Water Sources ◽  
Geographical Information ◽  
Well Water ◽  
Clean Water ◽  
Flood Events ◽  
Field Methods ◽  
The Impact ◽  
Area Data

Clean water supply is a major problem among flood victims during flood events. This article aims to determine the sites of well water sources that can be utilised during floods in the District of Kuala Krai, Kelantan. Field methods and Geographic Information Systems (GIS) were applied in the process of selecting flood victim evacuation centres and wells. The data used were spatial data obtained primarily, namely the well data, evacuation centre data and flood area data. The well and evacuation centre data were obtained by field methods conducted to determine the position of wells using global positioning system tools, and the same for the location of the evacuation centres. Information related to evacuation centres was obtained secondarily from multiple agencies and gathered into GIS as an evacuation centre attribute. The flood area data was also obtained via secondary data and was digitised using the ArcGIS software. The data processing was divided into two stages, namely the first stage of determining the flood victim evacuation centres to be used in this research in a structural manner based on two main criteria which were the extent to which an evacuation centre was affected by the flood and the highest capacity of victims for each district with the greatest impact to the flood affected population. The second stage was to determine the location of wells based on three criteria, namely i) not affected by flood, ii) the closest distance to the selected flood victim evacuation centre and iii) located at different locations. Among the main GIS analyses used were locational analysis, overlay analysis, and proximity analysis. The results showed that four (4) flood evacuation centres had been chosen and matched the criteria set, namely SMK Sultan Yahya Petra 2, SMK Manek Urai Lama, SMK Laloh and SK Kuala Gris. While six (6) wells had been selected as water sources that could be consumed by the flood victims at 4 evacuation centres in helping to provide clean water supply, namely Kg. Keroh 16 (T1), Kg. Batu Mengkebang 10 (T2), Lepan Meranti (T3), Kg. Budi (T4), Kg. Jelawang Tengah 2 (T5) and Kg. Durian Hijau 1 (T6). With the presence of the well water sources that can be used during flood events, clean water supply can be distributed to flood victims at the evacuation centres. Indirectly, this research can reduce the impact of floods in the future, especially in terms of clean water supply even during the hit of a major flood.

Potentially pathogenic bacteria isolated from different tropical waters in Sri Lanka

2013 ◽  
Vol 13 (6) ◽  
pp. 1463-1469 ◽  
Author(s):  
W. M. G. C. K. Mannapperuma ◽  
C. L. Abayasekara ◽  
G. B. B. Herath ◽  
D. R. I. B. Werellagama
Keyword(s):  
Surface Water ◽  
Sri Lanka ◽  
Water Samples ◽  
Pathogenic Bacteria ◽  
Water Sources ◽  
Bottled Water ◽  
Well Water ◽  
Faecal Coliforms ◽  
Total Coliforms ◽  
Source Waters

This study investigated the bacteriological contamination of different water sources in Sri Lanka. Source waters (n = 74) including bottled water, well water and surface water were assessed for enumerating total coliforms and faecal coliforms using the membrane filtration method. The results showed that 18.5 and 14.8% of bottled water samples were contaminated with total coliforms and faecal coliforms, respectively. All the well water and surface water samples exceeded the WHO permitted levels for total coliforms and faecal coliforms. Bacteriological identification using biochemical tests and api 20E identification tests revealed the presence of potentially pathogenic bacteria in all water sources tested. Bottled water mainly contained three Enterobacter species, while well water samples showed the broadest spectrum of bacteria including eleven coliform species belonging to the genera Klebsiella, Escherichia, Enterobacter, Citrobacter, Kluyvera, Pantoea, Rautella, and 10 non-coliform species in the genera Pseudomonas, Aeromonas, Salmonella and Acinetobacter. Surface waters contained seven coliform species belonging to the genera Klebsiella, Escherichia, Citrobacter, Rautella and Serratia, and eight non-coliform species in the genera Pseudomonas, Aeromonas and Acinetobacter. Detection of higher bacteriological counts and identification of potentially pathogenic bacteria in different source waters suggest a potential health risk of the water sources used in Sri Lanka.

scholarly journals Efektivitas Tablet Bacillus thuringiensis H-14 Isolat Salatiga terhadap Jentik Aedes aegypti pada Dua Sumber Air yang Berbeda

2021 ◽  
pp. 1-10
Author(s):  
Arum Triyas Wardani ◽  
RA. Wigati ◽  
Esti Rahardianingtyas ◽  
Rendro Wianto ◽  
Arief Nugroho
Keyword(s):  
Aedes Aegypti ◽  
Field Experiments ◽  
Slow Release ◽  
Residual Effect ◽  
Water Sources ◽  
Residual Effects ◽  
Well Water ◽  
Mosquito Vector ◽  
Control Effort ◽  
Significant Difference

Dengue Hemorrhagic Fever (DHF) is a vector-borne disease that is still a health problem in Indonesia. One of the DHF control effort is to control the larvae of the mosquito vector using Bacillus thuringensis H-14. The weakness of this metode is its short residual effect.  This study aims to determine differences in the effectiveness of B. thuringiensis H-14 tested in two different water sources, namely well water and PDAM water in people's houses and its residual effects in the field. The study used a quasi-​experimental, which include laboratory and field experiments in March to September 2017. The research was carried out by producing B. thuringensis H-14 Salatiga isolates in the form of slow release tablets, testing the efficacy and measuring their effectiveness to Aedes aegypti mosquito larvae in two kinds of water sources. The results showed that the content of B. thuringiensis Salatiga isolate in slow release tablets weighing 125 mg was 5 mg. The efficacy test at laboratory scale showed that the LC50 was 0.436 ppm and the LC90 was 2.440 ppm. The effectiveness test in the field of LC50 (PDAM water) is 0.098 ppm and (well water) is 1.909 ppm, while LC90 (PDAM water) is 0.186 ppm and (well water) is 0.909 ppm. The efficacy assay results showed there was no significant difference in the effect of B. thuringiensis tablet between well water and PDAM water. B. thuringiensis H-14 tablets were effective in controlling Ae. aegypti larvae more than 80% until the 7th day in field testing.

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