Aplikasi metode tahanan jenis dalam studi geologi karst Gua Seropan di Gunung Kidul, Yogyakarta

2017 ◽  
Vol 12 (2) ◽  
pp. 105-116
Author(s):  
Pulung A. Pranantya ◽  
Nurlia Sadikin
Keyword(s):  
Fresh Water ◽  
Ground Surface ◽  
Water Source ◽  
Raw Water ◽  
Limited Information ◽  
Resistivity Method ◽  
Central Java ◽  
Underground River ◽  
Initial Exploration

In terms of geology, most areas in south of the Gunungkidul District in Central Java consist of the Wonosari formation limestone. The land is generally very dry and source of raw water is also difficult to reach. Findings on the existence of underground river in caves, however, indicate the potential amount of water within the area, especially in the eastern part of the Gunungkidul District. Although limited information available, some fishermen have discovered that Seropan cave contains fresh water source. This cave is situated at 65 m below the cliff. Initial exploration, which done using a multichannel resistivity method, confirmed the availability of freshwater in the cave and underground river. The isopach of cave depth is found in ranges of 80 200 m below the ground surface. The water of Seropan cave can be utilized by implementing pipeline or by drilling at the suggested point based on the interpretation results, i.e. 110o2223.6388 EL 8o42.874 SL. [DY1][PP2][DY1]Perbaiki grammarIn terms of geology, most areas in south of Gunungkidul District in Central Java consist of the Wonosari formation limestone. The land is generally very dry and source of raw water is also difficult to reach. Findings on the exixtence of underground river in caves, however, indicate potential amount of water within the area especially in eastern part of Gunungkidul District. Although limited information available, some fishermans has discovered that Seropan cave contain fresh water source. This cave is situated at 65 m below the cliff. Initial exploration, which done using multichannel resistivity method, confirmed the availability of freshwater in the cave and underground river. The iso pach of cave depth is found in ranges of 80 200 m below the ground surface. The water of Seropan cave can be utilized by implementing pipeline or by drilling at the suggested point based on the interpretation results i.e. 110o2223.6388 EL 8o42.874 SL.[PP2]Sudah diperbaiki

scholarly journals Benefits of Embungs in the Rawa Pening Catchment Area for Reducing Tuntang River Flood Discharge

2018 ◽  
Vol 73 ◽  
pp. 08029
Author(s):  
Darsono Suseno ◽  
S Suripin ◽  
Budieny Hary ◽  
Cholifatul Afifah Risdiana ◽  
Pujiastuti Ratih ◽  
...  
Keyword(s):  
Catchment Area ◽  
Flood Control ◽  
Water Source ◽  
Raw Water ◽  
Sediment Control ◽  
Resources Management ◽  
Control Sediment ◽  
Central Java ◽  
Flood Discharge ◽  
River Flood

Rawa Pening is a natural lake as a source of water for Tuntang River which is used for hydropower, raw water source, main irrigation water source in Glapan weir located in Grobogan District, Central Java provinces. Rawa Pening will be developed as location of national and international ecotourism. An Optimal Water Resources Management is required with several studies. This study is the beginning of a series of studies planned to determine the potential of embungs and its utilization as flood control, sediment control of Rawa Pening and for reducing weeds growth.

PENGEMBANGAN PELAYANAN SISTEM DISTRIBUSI AIR MINUM KOTA TEGAL

2014 ◽  
Vol 14 (1) ◽  
pp. 28-39
Author(s):  
Yustika Kusumawardani ◽  
Wiharyanti Oktiawan ◽  
Ganjar Samudro
Keyword(s):  
Distribution System ◽  
Water Pressure ◽  
Distribution Network ◽  
Water Source ◽  
Distribution Networks ◽  
Service Level ◽  
Water Supply Systems ◽  
Raw Water ◽  
Head Of Household ◽  
Central Java

Kota Tegal merupakan salah satu daerah otonom di Provinsi Jawa Tengah yang memiliki jumlah penduduk 248.722 jiwa dengan jumlah kepala keluarga sebesar 61.513. Namun dari keseluruhan jumlah penduduk tersebut tercatat hanya 11.882 pelanggan atau sekitar 19,32% penduduk yang terlayani oleh PDAM Kota Tegal dan tingkat kebocoran air sebesar 44,21%. Tekanan air pada sistem distribusi eksisting sangat rendah karena menara air yang tersedia tidak dapat difungsikan.  Kapasitas sumber air baku yang saat ini dimiliki PDAM Kota Tegal adalah 190 lt/dtk. Pengembangan jaringan distribusi sistem penyediaan air minum untuk wilayah Kota Tegal direncanakan hingga tahun 2021 dengan menggunakan sumber air baku baru yang berasal dari PDAB Jawa Tengah yaitu penambahan sebesar 200 liter/detik. Kapasitas air tersebut digunakan untuk menambah wilayah pelayanan di kecamatan Tegal Selatan, Tegal Barat, Tegal Timur dan Margadana. Pengembangan jaringan distribusi baru dapat melayani  pelanggan sambungan rumah baru sebesar 16.071 SR dengan presentase rencana pengembangan hingga 79,80 % untuk seluruh wilayah Kota Tegal.  Tingkat pelayanan pada   Kecamatan Tegal Selatan, Tegal Timur, Tegal Barat dan untuk Kecamatan Margadana adalah 20,96% 16,92%, 19,19% dan 22,72% secara berturut-turut. Perencanaan jaringan distribusi baru tersebut menggunakan pola jaringan distribusi bercabang dan tidak terkoneksi dengan sistem jaringan distribusi lama dengan total anggaran biaya sebesar Rp 17.363.693.000,00. Tegal Region determined as one of the otonomical regions located in Central Java which has 248,722 populations with the number of head of household 61,513. From that total population was recorded only 11,882 custumers, or approximately 19.32% of the population served by PDAM Tegal with a leak rate it’s about 44.21%. Moreover the water pressure on the existing distribution system is very low because the water tower can not used. Capacity of raw water source that is currently owned by PDAM Tegal is 190 l/sec. Development of distribution networks for drinking water supply systems in Tegal region is planned until the year 2021 using the new raw water sources originating from PDAB in Central Java that is equal to 200 l/sec. Water capacity is used to increase the service area in the district of Tegal Selatan, Tegal Barat, Tegal Timur and Margadana. From that new development distribution network can fullfil customer connections for 16,071 household connections by the percentage of SR development plan up to 79.80% for the entire region Tegal. Which is the service level of each district are 20.96% for Tegal Selatan subdistrict, 16.92%, Tegal Timur subdistrict, 19.19% Tegal Barat subdistrict and 22.72% for Margadana subistrict. The new distribution network planning is designed using branch pattern of the distribution network and unconnected to the old system of distribution network results the total budget about Rp 17,363,693,000.00.

scholarly journals Sea Water Characterization at Ujung Kulon Coastal Depth as Raw Water Source for Desalination and Potential Energy

2018 ◽  
Vol 31 ◽  
pp. 02005 ◽  
Author(s):  
Dan Mugisidi ◽  
Okatrina Heriyani
Keyword(s):  
Fresh Water ◽  
Sea Water ◽  
Chemical Properties ◽  
Water Source ◽  
Sodium Sulphate ◽  
Raw Water ◽  
Energy Potential ◽  
Allowable Level ◽  
Physical And Chemical ◽  
And Chemical Properties

Fresh water is basic need for life while the source is limited. Therefore, sea water is used as fresh water through desalination process. Sea water has different physical and chemical properties ranging from the surface to the seabed. The energy potential that can be obtained from the hydrostatic pressure also changes according to the depth. As part of the research of the utilization of sea water into fresh water, the aim of this study is to know the characteristics of sea water in the depth that can be utilized as source of fresh water. The sea water samples were taken at 11km from Ujung Kulon beach with depth of 0m, 20m, 40m, 60m, 80m, and 100m under the surface. The results showed that the physical properties at every depth were below the maximum allowable drinking water except for the amount of dissolved solids. Chemical characteristics at any depth above allowable level were fluoride, hardness (CaCo3), chloride, sodium, sulphate, and (KMnO4). In addition to the properties, pressure is one of the considerations in this study to determine the depth of sea water as sources for desalination. Pressure increased by 36.11% as the depth of the sea increased.

scholarly journals Aplikasi Manajemen Risiko pada Pembangunan Sistem Penyediaan Air Minum (SPAM) Regional Jawa Tengah (Studi Kasus pada Pembangunan Jaringan Transmisi SPAM Regional Bregas)

2016 ◽  
Vol 21 (2) ◽  
pp. 123
Author(s):  
Hernoni Septiani ◽  
M. Agung Wibowo ◽  
Syafrudin Syafrudin
Keyword(s):  
Service Providers ◽  
Water Source ◽  
Land Acquisition ◽  
Transmission Network ◽  
Policy Recommendations ◽  
Raw Water ◽  
Network Development ◽  
Central Java ◽  
Risk Breakdown Structure ◽  
The Impact

The increasing need for drinking water and undistributed raw water source needs solution with SPAM, Central Java Region. One of it is SPAM Bregas Region which the service locations are in Brebes Districts, Tegal City, and Tegal District. In the process of the transmission network development, there come some risks that hamper so that it needs for further research. This research aims to identify risks, analyze the amount of risk probability and give policy recommendations. The responden of study are government agencies as providers the transmission pipelines development projects of Bregas Regional SPAM, also the supervision consultants and contractors as a service providers. The method used is to spread the questionnaire to each stakeholder for structuring the risk of using RBS (Risk Breakdown Structure) and multiplying the value of the impact and frequency to obtain the value of the level of risk for each risk factor. The results showed the risks that happened in transmission network development in Bregas Regional SPAM are different from each stakeholder. Risks from perception of the supervising consultant 21.95% is accepted, 18.29% mitigated, and 59.76% avoided. Risk from owner perseption 32.93% is accepted, 23.17% mitigated, and 43.90% avoided. Rizks from contractor perseption 23.17% is accepted, 29.27 mitigated, and 47.56% avoided. Overall stakeholder’s biggest risk is land acquisition.

scholarly journals Ultramicro Analysis of Odorous Materials by Massfragmentography in Raw Water Source of Water Supply

1978 ◽  
Vol 98 (1) ◽  
pp. 124-128
Author(s):  
YOSHITERU TSUCHIYA ◽  
TOSHIHIKO OKAMOTO
Keyword(s):  
Water Supply ◽  
Water Source ◽  
Raw Water

scholarly journals Identification and management of microbial contaminations in a surface drinking water source

2007 ◽  
Vol 5 (S1) ◽  
pp. 67-79 ◽  
Author(s):  
J. Åström ◽  
T. J. R. Pettersson ◽  
T. A. Stenström
Keyword(s):  
Drinking Water ◽  
Water Intake ◽  
Surface Waters ◽  
Microbial Contamination ◽  
Water Source ◽  
Drinking Water Source ◽  
Raw Water ◽  
Indicator Organisms ◽  
E Coli ◽  
The City

Microbial contamination of surface waters constitutes a health risk for drinking water consumers which may be lowered by closing the raw water intake. We have evaluated microbial discharge events reported in the river Göta älv, which is used for raw water supply to the city of Göteborg. Elevated levels of faecal indicator bacteria were observed during periods of closed raw water intake. High bacteria levels were, however, also occasionally detected during periods of open intake, probably as a result of microbial discharge far upstream in the river which may be difficult to predict and manage by closing the intake. Accumulated upstream precipitations, resulting in surface runoff and wastewater contaminations in the catchment, correlated positively with the levels of total coliforms, E. coli, intestinal enterococci and sulfite-reducing clostridia. Levels of faecal indicator organisms were negatively correlated to the water temperature due to enhanced survival at lower temperatures. Wastewater discharges from a municipality located just upstream of the water intake resulted in elevated E. coli concentrations downstream at the raw water intake for Göteborg. To improve the prediction of microbial contaminations within the river Göta älv, monitoring data on turbidity and upstream precipitation are of particular importance.

FRESH WATER SPONGES IN RAW-WATER TRANSMISSION LINES

1969 ◽  
Vol 61 (9) ◽  
pp. 473-475
Author(s):  
D. L. King ◽  
A. D. Ra ◽  
J. L. Tuepker
Keyword(s):  
Fresh Water ◽  
Transmission Lines ◽  
Raw Water ◽  
Water Transmission

scholarly journals Analysis Of Raw Water Supply In Pucang Gading Housing Complex, District Of Demak To Preparation Of Water Resources And Water Resources Management

2018 ◽  
Vol 73 ◽  
pp. 03012
Author(s):  
Solikhul Abdi ◽  
Sudarno
Keyword(s):  
Drinking Water ◽  
Water Resources ◽  
Water Supply ◽  
Treatment Plant ◽  
Water Treatment Plant ◽  
Water Source ◽  
Water Sources ◽  
Service Area ◽  
Raw Water ◽  
Housing Complex

Pucang Gading Housing Complex is an area within the Village Batursari, District of Demak with a population of 2018 as many as 44,257 inhabitants. Raw water service system Mranggen Unit is divided into 5 areas of service (service area Mranggen, Batursari I, Batursari II, Batursari III and Kebon) which utilize raw water source of water treatment plant (IPA Waru) and 8 Wells In a total discharge of 120 liter/second. The number of home connections in Pucang Gading area is currently 3,374 house connections, with a total water usage 14.25 liter/second Water discharges from clean water sources in Pucang Gading region are currently not maximally available to supply water to Pucang Gading service area. In this research will know the problems and readiness that exist by looking from the achievement of Medium Term Development Plan of Demak Regency Year 2016-2021. This research uses SWOT analysis method that is internal and external factors. The selection of raw water sources for drinking water should pay attention to aspects of quality, quantity and continuity. Demak Regency has the potential of surface water either river/ reservoir/dam. The problems and challenges of drinking water supply include issues of safe access to water supply, and regulation of groundwater utilization for the community.

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