scholarly journals Kualitas air minum isi ulang pada depot air minum di Kabupaten Manokwari Selatan

Cassowary ◽  
2020 ◽  
Vol 3 (1) ◽  
pp. 61-71
Author(s):  
Awliya Nur Marhamah ◽  
Budi Santoso ◽  
Budi Santoso
Keyword(s):  
Drinking Water ◽  
Reverse Osmosis ◽  
Microbiological Quality ◽  
Drinking Water Treatment ◽  
Quality Standard ◽  
Special Treatment ◽  
Human Beings ◽  
Water Treatment Process ◽  
Living Things

Water is a chemical compound that is very important for the life of human beings and other living things. Refill water is water that undergoes special treatment, among others, the process of chlorination, aeration, filtration and irradiation with ultraviolet light. The objectives of this study were to determine the quality of refill drinking water produced by refill drinking water depots in South Manokwari Regency based on physical, chemical and microbiological variables. The descriptive method was used in this study. Samples of refill drinking water were collected from 6 depots located in South Manokwari Regency.   Water samples are taken to the laboratory for chemical, physical and microbiological quality analyzes. Good quality refill drinking water at the kiosk is drinking water produced by depots B and F, while drinking water produced from depot E was quite good.. The refill drinking water treatment process was carried out using the reverse osmosis method, a combination of the reverse osmosis and ultraviolet methods. The quality of refill drinking water in depots B, D, and F meets the quality standard requirements based on Permenkes 2010. E. coli population contained in refill water in depots A, C and F after storage in gallons for 3 days was above the quality standard requirements so it must be boiled before being consumed by humans.

scholarly journals Microbiological Quality of Drinking Water in Sachets Sold in the City of Yaoundé in Cameroon: Tests of Sensitivity to the Antibiotics of Bacteria Isolated

2020 ◽  
Vol 8 (1) ◽  
pp. 27
Author(s):  
Nguepidjo Gilbert ◽  
Kapso Tchouankep Mireille ◽  
Ngong Ankiambom Innocent ◽  
Tonmeu Douyong Chimène Sandrine ◽  
Enoka Patrice ◽  
...  
Keyword(s):  
Drinking Water ◽  
Low Cost ◽  
Bacterial Species ◽  
Microbiological Quality ◽  
Positive Culture ◽  
Human Beings ◽  
Salmonella Spp ◽  
Cross Sectional ◽  
The City

Water is the basic drink for human beings and drinking water in sachets is very popular because of its relatively low cost and availability. The aim of this study is to determine the bacteriological profile of sachet drinking water sold in the city of Yaounde. It was a descriptive cross-sectional study covering the period from March to June 2019, carried out in the application laboratory of ETMS-Yaounde. A total of 230 samples of drinking water in sachets purchased in different markets in the city of Yaounde were analyzed using Mac Conkey's flooding method. The identification was done on the API 20 E Gallery and the susceptibility test on Mueller Hinton media. The size of the sample was 230 packaged sachet drinking water and 213 of the 230 revealed 92% of positive culture of germs, and only 17 samples gave a negative culture, at a percentage of 8% of isolated germs. The isolated bacterial species and their respective abundances in samples were Enterobacter gergoviae (3%), Klebsiella pneumoniae (5%), Proteus mirabilis (5%), Serratia fonticola (5%), Salmonella choler arizonae cloacae (8%), Salmonella spp. (8%), Enterobacter cloacae (10%), Staphylococcus aureus (10%), Pseudomonas aeruginosa (18%) and Staphylococcus epidermidis (28%). All these tested germs were resistant to Amoxicillin and Erythromycin and 70% of tested germs were sensitive to Gentamycin. Overall, the results revealed poor microbiological quality of these waters. This exposes consumers to health risks, and it is important to inform and sensitize consumers about the risks involved, to educate producers and to control their activities by the health services.

Study on the Micro-Polluted Water Treatment by GAC-UF

2010 ◽  
Vol 113-116 ◽  
pp. 2049-2052
Author(s):  
Jin Long Zuo
Keyword(s):  
Water Quality ◽  
Drinking Water ◽  
Water Treatment ◽  
Suspended Solids ◽  
Treatment Process ◽  
Drinking Water Treatment ◽  
Polluted Water ◽  
Total Removal ◽  
Water Treatment Process

Nowadays drinking water resource has been polluted, while the conventional treatment process cannot effectively remove polluted matters. In order to tackle this problem, the granular activated carbon (GAC) and ultrafiltration membrane (UF) were introduced into drinking water treatment process. The results revealed that when treat the micro-polluted water the effluent water quality of turbidity, permanganate index and color can reach 0.1NTU, 1.3mg/L-2.3mg/L and 5 degree respectively with GAC-UF process. And the total removal efficiency of turbidity, permanganate index and color can reach 98%-99%, 70%~75% and 60% respectively. The GAC can effectively remove organic matters, while the UF membrane can effectively remove suspended solids, colloids. The GAC-UF combined process can get a good water quality when treat the micro-polluted water.

scholarly journals Energy use in water purification as criterion for selecting drinking water treatment technologies

2019 ◽  
Author(s):  
Wenfa Ng
Keyword(s):  
Drinking Water ◽  
Water Treatment ◽  
Reverse Osmosis ◽  
Energy Use ◽  
Produced Water ◽  
Production Capacity ◽  
Drinking Water Treatment ◽  
Flash Evaporation ◽  
Quality Of Water

Quality of produced water is usually the criterion for selecting between different desalination technologies for turning seawater into drinking water. However, contemporary trend in drinking water treatment sees a convergence between different technologies for the same water quality. Hence, how do different desalination technologies differentiate amongst each other? Awareness of climate change impact as well as price of produced water, energy use per unit of treated water is an oft-used criterion for assessing the effectiveness and efficiency of different desalination technologies. Specifically, comparing multi-effect flash evaporation and reverse osmosis, the latter enjoys a significant energy use advantage given the lack of the need for converting water into the vapor phase as in multi-effect flash evaporation. Thus, energy used in producing drinking water is significantly higher in multi-effect flash evaporation compared to the high pressure process of reverse osmosis. From the operation perspective, reverse osmosis also benefits from its ability to scale linearly in increasing water production capacity through addition of extra membrane modules, which is not the case for multi-effect flash evaporation where a new distillation column is required for significant increase in production capacity. Collectively, with the same quality of water produced by different desalination technologies, comparison between different technologies increasingly relies on the energy use per unit of produced water. Using this criterion, reverse osmosis membrane desalination has a significant advantage relative to multi-effect flash evaporation in energy cost, which translates to a lower price of produced water.

An Overview of Drinking Water Treatment

2014 ◽  
Vol 1010-1012 ◽  
pp. 244-249
Author(s):  
Xing Hui Zhao ◽  
He Li Wang ◽  
Hao Ming Li
Keyword(s):  
Drinking Water ◽  
Activated Carbon ◽  
Water Treatment ◽  
Drinking Water Treatment ◽  
Development Trend ◽  
Quality Standard ◽  
Technical Condition ◽  
Biological Activated Carbon ◽  
Water Treatment Process ◽  
Water Treatments

This paper puts forward the problems existing in the conventional drinking water treatment and expounds the necessary of improving drinking water treatment based on the present water pollution situation and the more stringent water quality standard. According to the existing economic and technical condition in our country, strengthen the conventional drinking water treatment should be done in advance. Besides, adding the pretreatment and depth treatment into the water treatment process is also necessary in the future. For the technology of pretreatment, biological pretreatment technology is the worthiest to study. For improving the conventional drinking water treatments, study the morphology and kinetics mechanism of coagulation is very necessary. For the technology of depth treatment, the activated carbon and biological activated carbon technology will be the main development trend.

scholarly journals Energy use in water purification as criterion for selecting drinking water treatment technologies

2019 ◽  
Author(s):  
Wenfa Ng
Keyword(s):  
Drinking Water ◽  
Water Treatment ◽  
Reverse Osmosis ◽  
Energy Use ◽  
Produced Water ◽  
Production Capacity ◽  
Drinking Water Treatment ◽  
Flash Evaporation ◽  
Quality Of Water

Quality of produced water is usually the criterion for selecting between different desalination technologies for turning seawater into drinking water. However, contemporary trend in drinking water treatment sees a convergence between different technologies for the same water quality. Hence, how do different desalination technologies differentiate amongst each other? Awareness of climate change impact as well as price of produced water, energy use per unit of treated water is an oft-used criterion for assessing the effectiveness and efficiency of different desalination technologies. Specifically, comparing multi-effect flash evaporation and reverse osmosis, the latter enjoys a significant energy use advantage given the lack of the need for converting water into the vapor phase as in multi-effect flash evaporation. Thus, energy used in producing drinking water is significantly higher in multi-effect flash evaporation compared to the high pressure process of reverse osmosis. From the operation perspective, reverse osmosis also benefits from its ability to scale linearly in increasing water production capacity through addition of extra membrane modules, which is not the case for multi-effect flash evaporation where a new distillation column is required for significant increase in production capacity. Collectively, with the same quality of water produced by different desalination technologies, comparison between different technologies increasingly relies on the energy use per unit of produced water. Using this criterion, reverse osmosis membrane desalination has a significant advantage relative to multi-effect flash evaporation in energy cost, which translates to a lower price of produced water.

Microbiological quality of residues from drinking water preparation

1995 ◽  
Vol 31 (5-6) ◽  
pp. 75-79 ◽  
Author(s):  
M. Würzer ◽  
A. Wiedenmann ◽  
K. Botzenhart
Keyword(s):  
Waste Water ◽  
Escherichia Coli ◽  
Pseudomonas Aeruginosa ◽  
Drinking Water ◽  
Water Treatment ◽  
Pathogenic Bacteria ◽  
Waste Water Treatment ◽  
Microbiological Quality ◽  
Detection Limits

In Germany the application of procedures such as flocculation and filtration in the preparation of drinking water results in the annual production of an estimated 500,000 t of sediments and sludges. Some of these residues have a potential for being reused, for example in agriculture, forestry, brickworks or waste water treatment. To assess the microbiological quality of residues from waterworks methods for the detection of enterobacteria, Escherichia coli, Salmonella, Pseudomonas aeruginosa, Legionella, poliovirus, Ascaris suis eggs and Cryptosporidium have been evaluated regarding their detection limits and were applied to various residues from German waterworks. Results show that sediments and sludges may contain pathogenic bacteria, viruses and protista. When residues from waterworks are intended to be reused in agriculture or forestry the microbiological quality should therefore be considered.

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