scholarly journals Tingkat Korosivitas Air Terhadap Infrastruktur Sumber Daya Air Berbahan Semen atau Mortar dengan fc’ ≤ 30 MPa pada 9 Waduk di Indonesia

2021 ◽  
Vol 19 (1) ◽  
pp. 20
Author(s):  
Devita Satya Lestari
Keyword(s):  
Water Quality ◽  
Compressive Strength ◽  
Water Resources ◽  
Standard Method ◽  
Saturation Index ◽  
National Standard ◽  
Primary Data ◽  
Method Of Calculation ◽  
Langelier Saturation Index ◽  
Index Saturation

Abstrak. Korosi atau kerusakan yang terjadi di infrastruktur sumber daya air terutama yang berbahan semen atau mortar dengan fc’ atau dengan nilai kuat tekan ≤ 30 Mpa, dapat menimbulkan banyak kerugian. Kerugian yang ditimbulkan antara lain kerugian secara materiil karena korosi menggerogoti semua aset infrastruktur dan tentunya kerugian dalam hal keamanan karena dapat mengancam keselamatan manusia. Korosi merupakan permasalahan yang sangat penting dan tidak akan ada habisnya, karena peristiwa korosi terjadi secara terus-menerus dan berkelanjutan. Peristiwa korosi tidak dapat terjadi dengan sendirinya, tetapi karena adanya berbagai faktor-faktor tertentu yang dapat menyebabkan terjadinya korosi. Tujuan dari studi ini adalah untuk menentukan tingkat korosivitas air terhadap infrastruktur sumber daya air berbahan semen atau mortar dengan fc’ atau dengan nilai kuat tekan ≤ 30 MPa pada 9 waduk di Indonesia, sehingga akan diketahui rekomendasi yang tepat untuk pencegahan dan pengendalian korosivitas air terhadap infrastruktur sumber daya air berbahan semen atau mortar dengan fc’ atau dengan nilai kuat tekan ≤ 30 MPa, karena semen merupakan salah satu material yang paling banyak digunakan saat ini. Studi ini menggunakan data-data primer kualitas air. Metode pengambilan, penyimpanan, dan pengawetan sampel air dilakukan dengan mengikuti ketentuan dari Standar Nasional Indonesia Nomor 6989.57:2008. Pengujian kualitas air dilakukan oleh laboratorium yang terakreditasi. Metode perhitungan menggunakan rumus Langelier Saturation Index (LSI) A, B, C, D, dan rumus Saturation Index (SI) dari Standard Method APHA-AWWA-WEF. Hasil perhitungan LSI A, B, C, D, dan SI Standard Method APHA-AWWA-WEF menunjukkan bahwa tingkat korosivitas air di 9 waduk berpotensi menyebabkan korosi terhadap infrastruktur sumber daya air berbahan semen atau mortar dengan fc’ atau dengan nilai kuat tekan ≤ 30MPa. Kata kunci: infrastruktur sumber daya air, Langelier Saturation Index, Saturation Index, tingkat korosivitas air. Abstract. Water Corrosivity Level Againts the Water Resources Infrastructure Made of Cement or Mortar with fc' ≤ 30 MPa in 9 Reservoirs in Indonesia. Corrosion or damage that occurs in the infrastructure of water resources, especially those made of cement or mortar with fc' or with a compressive strength value of ≤ 30 MPa will be able to engender losses. Losses incurred, in the form of losses materially because of corrosion gnaw off all infrastructure assets and of course in losses terms of security, because it can threaten the safety of a human. Corrosion is a very important problem and will not be endless, as corrosion events occur continuously and sustainably. Corrosion events cannot occur by themselves, but because of certain factors that may cause corrosion. The purpose of this study is to determine the level of water corrosivity to the infrastructure of water resources made from cement or mortar with fc' or with a compressive strength value of ≤ 30 MPa in 9 reservoirs in Indonesia, to develop appropriate recommendations for the prevention and control of the water corrosivity to the infrastructure of water resources made from cement or mortar with fc' or with a compressive strength value of ≤ 30 MPa because cement is one of the most used materials today. This study uses water quality primary data. The methods of capturing, storing, and preserving water samples are carried out following the provisions of Indonesian national standard number 6989.57:2008. Water quality testing is done by accredited laboratories. The method of calculation uses the Langelier Saturation Index (LSI) A, B, C, D, and the formula Saturation Index (SI) of the Standard Method APHA-AWWA-WEF. Calculation results of LSI A, B, C, D, and SI Standard Method APHA-AWWA-WEF show that the level of water corrosivity in 9 reservoirs has the potential to cause corrosion of water resources infrastructure made of cement or mortar with fc' or with a compressive strength value of ≤ 30 MPa. Keywords: Langelier Saturation Index, Saturation Index, water corrosivity level, water resource infrastructure.

scholarly journals Assessment of Water Quality of Khari River in Agra District During Lockdown Period using Multivariant Techniques and Quality Indexes

2021 ◽  
Vol 34 (1) ◽  
pp. 67-77
Author(s):  
R.K. Saraswat ◽  
S. Verghesep ◽  
T. Pachauri
Keyword(s):  
Water Quality ◽  
Positive Impact ◽  
Anthropogenic Activities ◽  
Saturation Index ◽  
Principal Component ◽  
Comparative Assessment ◽  
Langelier Saturation Index ◽  
Industrial Use ◽  
Quality Indexes

Throughout the world, the lock-down period during COVID-19 (March 2020- July 2021) has reported an improvement in the ecological scenario with controlled anthropogenic activities. This study presents a comparative assessment of water quality of the highly polluted Khari river in Agra district (India) during the pre-pandemic and post-pandemic period of COVID-19. The result was analyzed in terms of water quality index (WQI), the most accessed tool used by various researchers to report the water quality. In addition, Aggressive index (AI) and Langelier saturation index (LSI) have also been determined. Further, multivariate analysis has been performed in terms of principal component analysis (PCA). ANOVA has been used to study the variance of the parameters. The study revealed a positive impact of pandemic on the water quality as the parameters improved during the post-pandemic period as compared to the pre-pandemic period. However, as the river was highly polluted during the pre-pandemic period, strict actions are required for further improvement in its water quality for agricultural, industrial and industrial use.

scholarly journals Water quality assessment of a tropical river using water quality index (WQI), multivariate statistical techniques and GIS

2019 ◽  
Vol 9 (7) ◽  
Author(s):  
Sanjoy Shil ◽  
Umesh Kumar Singh ◽  
Pankaj Mehta
Keyword(s):  
Water Quality ◽  
Water Quality Index ◽  
Quality Index ◽  
Monsoon Season ◽  
Saturation Index ◽  
Stability Index ◽  
Water Quality Assessment ◽  
Multivariate Statistical ◽  
Two Samples ◽  
Langelier Saturation Index

Abstract Mahananda River is an important river in India and Bangladesh, as the people of both the countries use the water extensively, without sufficient and reliable information about water qualities and pollution status. The purpose of this study is to evaluate the water quality of the river and to analyse the suitability for drinking, agricultural and industrial uses. This is why this study on the Mahananda River is extremely important for the region. For this study, samples from fourteen sampling stations were collected in pre-monsoon and post-monsoon seasons in 2016 and water quality index (WQI), agriculture and industry-related indices were computed. WQI values designated two sampling stations out of fourteen sampling stations as ‘very bad’ category and another two sampling stations as ‘bad’ category. The pH values of some sampling stations slightly exceeded the upper permissible limit. USSL diagram analysis classified two samples of pre-monsoon season in C2S1 category which indicates a medium salinity and low sodium water. Magnesium hazard values of four sampling stations are above 50% suggesting not suitable for irrigation. However, some indices like sodium per cent, residual sodium carbonate and residual sodium bicarbonate, Kelly’s index, permeability index and potential salinity allow the water for use in irrigation purposes. Langelier Saturation Index and aggressive index values designate the water as moderately aggressive or non-aggressive. Ryznar Stability Index values designate the water as ‘aggressive’ or ‘very aggressive’ indicating unsuitability for industrial uses. Sampling stations S-1, S-2, S-8 and S-14 need special attention.

scholarly journals Manisa Yöresi Sulama Suyu Kaynaklarının Toprak, Bitki ve Damla Sulama Sistemi Yönünden Değerlendirilmesi

2019 ◽  
Vol 7 (10) ◽  
pp. 1648
Author(s):  
Pınar Doğan ◽  
Üstün Şahin
Keyword(s):  
Water Resources ◽  
Irrigation System ◽  
Groundwater Resources ◽  
Saturation Index ◽  
Underground Water ◽  
Sodium Adsorption Ratio ◽  
Quality Analysis ◽  
Dilute Acid ◽  
Surface Water Resources ◽  
Langelier Saturation Index

Chemical quality analysis results of 5 surface and 30 groundwater resources commonly used in agricultural irrigation in Manisa province were evaluated and the possible effects on soil, plant and drip irrigation system were determined. In this context, the cation (Ca, Mg, Na, K), anion (CO3, HCO3, CI, SO4), Fe, B contents, pH and electrical conductivity values of the water resources as well as the Percentage Sodium, Sodium Adsorption Ratio and the Adjusted Sodium Adsorption Ratio determined by the calculation Permanent Sodium Carbonate, Langelier Saturation Index, Potential Salinity, Permeability Index and Hardness parameters were used. The results indicated that the potential of problem of surface water resources is higher than that of ground water. Salihli-Köseali, Necati bey farms and Alaşehir-Kasaplı underground water resources are used more serious problems than other underground water resources. According to the type of problem that may occur, recommendations were made on measures including washing, salt-resistant plant growing, addition of organic matter and natural Ca sources and the application of dilute acid.

scholarly journals ANALISIS KUALITAS AIR MINUM PADA AIR ALKALI TERIONISASI

UNISTEK ◽  
2021 ◽  
Vol 8 (1) ◽  
pp. 62-67
Author(s):  
Nita Rosita
Keyword(s):  
Water Quality ◽  
Standard Method ◽  
Measurement Method ◽  
Quality Standards ◽  
National Standard ◽  
Quality Requirement ◽  
Chemical Parameters ◽  
Alkaline Water ◽  
Required Quality

Water is needed by humans life, so water quality is a quality requirement of human health. A Few years ago, people are familiar with ionized alkaline water which has a pH of more than 7. Consequently, it is necessary to test the quality of ionized alkaline water following Ministry of Health Regulation (PERMENKES) No. 492 of 2010. Samples were taken from 8 brands of ionized alkaline water in the South Tangerang. The measurement method is procedured with the Indonesian national standard method (SNI). The results of the physical and biological analysis show that 8 brands taken as samples comply with the quality standards with applicable regulations. The result of the  chemical show that indicate that 3 samples do not fulfill the PERMENKES requirements, namely pH, pH concentrations ranging from 7.61-8.90 with the required quality standards of 6.5-8.5. Whereas other chemical parameters of Manganese, Iron, Ammonia, Nitrite, Sulfate, Chloride, and Hardness fulfill the specified requirements. The results concluded that only five of the eight brands of ionized alkaline water were suitable for consumption by the applicable regulations.

scholarly journals Assessment of water quality in drainage canals of Çarşamba Plain, Turkey, through water quality indexes and graphical methods

2016 ◽  
Vol 18 (1) ◽  
pp. 67-78 ◽  
Keyword(s):  
Water Quality ◽  
Saturation Index ◽  
Drainage Water ◽  
Quality Parameters ◽  
Salinity Hazard ◽  
Low Sodium ◽  
Physico Chemical ◽  
Drainage Canals ◽  
Langelier Saturation Index ◽  
Ussl Diagram

<p>In this study, the seasonal variation on drainage water quality of Çarşamba Plain, Turkey has been evaluated from June 2012 to January 2013 and determined the suitability of water for irrigation purpose. Water samples collected from 21 drainage canals during July and January were analysed for 12 water quality parameters including physico-chemical analyses<strong>. </strong>Piper diagram and United States Salinity Laboratory (USSL) diagram were prepared to investigate water quality. Sodium Adsorption Ratio (SAR), Percent Sodium (Na%), Residual Sodium Carbonate (RSC), Kelly Index (KI), Magnesium Ratio (MR), Langelier Saturation Index (LSI), Permeability Index (PI) and Potential Salinity (PS) were also used to assess suitability of waters for irrigation.</p> <p>In July 2012, EC values varied between 0.45-4.23 dS/m. Waters of 7 drainage canals were found to be unsuitable for irrigation with regard to KI, 3 canals with regard to RSC and 13 canals with regard to MR. According to USSL diagram, 24% of drainage waters were classified in C<sub>2</sub>S<sub>1</sub>, 62% in C<sub>3</sub>S<sub>1</sub>, 4% in C<sub>4</sub>S<sub>2</sub> and 10% in C<sub>4</sub>S<sub>4</sub> class. In January 2013, EC values varied between 0.16-1.44 dS/m. Waters of one canal was found to be unsuitable for irrigation with regard to KI and 8 canals with regard to MR values.</p> <div> <p>The result obtained from paired sample <em>t</em>-test revealed that the drainage canal water quality varies significantly between June 2012 and January 2013 except for Ca, Mg and SO<sub>4</sub>. &nbsp;According to analysed parameters, some of&nbsp; the drainage canals were considered unsuitable for irrigation in june 2012. The water properties of all canals were observed as unsuitable to be used for drip irrigation in accordance to the LSI index. Classification of drainage water by USSL diagrams indicates a low sodium and high salinity hazard.&nbsp;</p> </div> <p>&nbsp;</p>

scholarly journals Assessment of Groundwater Quality of Outer Skirts of Kota City with Reference to its Potential of Scale Formation and Corrosivity

2011 ◽  
Vol 8 (3) ◽  
pp. 1330-1338 ◽  
Author(s):  
Nitin Gupta ◽  
S. M. Nafees ◽  
M. K. Jain ◽  
S. Kalpana
Keyword(s):  
Water Quality ◽  
Saturation Index ◽  
Quality Parameters ◽  
Scale Formation ◽  
Plant Oil ◽  
Seed Processing ◽  
Four Seasons ◽  
Langelier Saturation Index ◽  
Industrial Projects ◽  
Stability Of Water

Kota City is a prominent industrial and educational town of Rajasthan state, India. Mega industrial projects of cement, fertilizers, power plant, oil seed processing units are located nearby the city. The groundwater of study area is used in domestic as well as in industrial activities. It is worthwhile to know the water quality status and its effect on entity, which is exposed in practical use. A comprehensive assessment of water quality parameters in groundwater samples drawn from 24 different locations, 6 sites from each direction at outer skirts of Kota City of Rajasthan, India, in four seasons of years 2006 to 2008 was carried out. To find out the suitability and stability of water, various indices available to assess the scale formation and corrosivity was used. The Langelier saturation index (LSI) and Ryznar saturation index (RSI) were calculated and discussed with respect to saturation level.

Drinking water quality and protection of resources

2010 ◽  
Vol 1 (1-2) ◽  
pp. 51-54
Author(s):  
J. Fettig
Keyword(s):  
Water Quality ◽  
Drinking Water ◽  
Water Resources ◽  
River Water ◽  
Spring Water ◽  
Public Water Supply ◽  
Legal Requirements ◽  
Reservoir Water ◽  
Water Lake ◽  
Treatment Step

Abstract The structure of public water supply in Germany and the water resources used are briefly described. An overview over the legal requirements for drinking water is given, and the sources for contaminants are outlined. Then the multiple-barrier approach is discussed with respect to the resources groundwater and spring water, lake and reservoir water, and river water. Examples for treatment schemes are given and the principle of subsurface transport of river water as a first treatment step is described.

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