Browsing by Author "Juandi, Juandi"

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    ANALISA SEBARAN DAN KUALITAS AIR BAWAH TANAH MENGGUNAKAN METODE GEOLISTRIK ATURAN SCHLUMBERGER DAN METODE GEOKIMIA DI KELURAHAN SIMPANG BARU KECAMATAN TAMPAN PEKANBARU RIAU
    (Elfitra, 2023-06) Manurung, Kurnia Asih; Juandi, Juandi
    Tampan a sub-district of Pekanbaru city which has the most densely populated area in Riau. This area requires consumption of water which is readily found from groundwater. It is important to investigate the distribution of groundwater, the purpose of this study is to identify and to determine the quality of groundwater. The data obtained in the acquisition process is used to calculate the apparent resistivity value at each measurement point and to analyze it quantitatively and qualitatively. The process is continued with inversion using Progress v3.0 Software so that the resistivity and layer thickness values are obtained at each measurement point. Results showed that the range of soil resistivity values for line 1 ranged from 5.54 Ωm to 1850.23 Ωm, line 2 has soil layer resistivity values ranging from 0.91 Ωm to 2675.59 Ωm, line 3 has soil resistivity values ranging from 11.15 ohm-meters to Ωm and track 4 has soil resistivity values ranging from 15.26 Ωm to 1202.40 Ωm. For water parameter measurements, the results find at pH ranges from 5.12 pH to 6.15 pH, for TDS values range from 11 mg/L to 98 mg/L, for conductivity values range from 14 mS/cm to 156 mS/cm and turbidity values are in the ranges of 0.27 NTU to 2.98 NTU. The conclusion of result of the comparison of parameter tests and quality standard thresholds is that the residents water is unfit for consumption.
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    ANALISIS SEBARAN AIR BAWAH TANAH SECARA HORIZONTAL MENGGUNAKAN METODE GEOLISTRIK KONFIGURASI WENNER DI KELURAHAN SIMPANG BARU
    (Elfitra, 2023-06) Manurung, Nova Yuliana Br; Juandi, Juandi
    subsurface lithology, especially rocks containing groundwater using the geoelectric method have been investigated. The geoelectric method is a geophysical method used to determine the geological conditions of the subsurface of the earth based on variations in the resistivity values of the rock types. The method used in this study is the Wenner configuration geoelectric method. This method has several advantages, such as good vertical resolution and high sensitivity to lateral changes. Apart from knowing about the distribution and depth of subsurface water, and subsurface conditions, data from research results in the Simpang Baru Village area can be used regarding the need for clean water for the community. Data obtained from measurements using the Wenner configuration geoelectrical method are processed to obtain resistivity, while for interpretation uses the software Res2Dinv. On a track with a length of 100 meters, it has a depth of up to 9.56 meters below the surface with a resistivity value with a lowest one of 0.370 Ωm and the highest one is 33141 Ωm. The points of water distribution at depths of 2.25 – 5.56 m have resistivity values of 0.37 – 1.89 Ωm corresponding to the horizontal line at points 30 – 84 m.
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    INTERPRETASI KUALITAS AIR BAWAH TANAH DI SEKITAR AKTIVITAS USAHA LAUNDRY KELURAHAN TUAH KARYA DENGAN MENGGUNAKAN METODE GEOLISTRIK KONFIGURASI SCHLUMBERGER DAN GEOKIMIA
    (Elfitra, 2023-06) Aulia, Raudatul; Juandi, Juandi
    The laundry business on Taman Karya Street produces the disposal of waste containing chemicals surrounding the ground water in that place. This research aims to determine the depth of groundwater, investigating the water quality for consumption using the Schlumberger configuration geoelectric method on two tracks with a length of 100 m. The data obtained in the acquisition process is used to calculate the apparent resistivity value at each measurement point and analyzed quantitatively and qualitatively. The process is continued with inversion using the Software Progress v3.0 application so that the resistivity and layer thickness values can be obtained. The result show that the first track obtains a range of resistivity values ranging from 198.58 Ωm to 252.61 Ωm, and the second track is 9.90 Ωm to 1209.97 Ωm. There are five sample points from each of the laundry wells and residents' wells. The underground water sample is tested such as pH, TDS, conductivity, salinity, and turbidity. The results show that the underground water around the research area cannot be consumed by the people who live in that area, based on the Regulation of the Minister of Health of the Republic of Indonesia. The data describe that underground water samples exceed the standard quality in which the pH is 6.5 or acidic. However the TDS and turbidity parameters still fulfill with the quality standard.
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    Interpretasi Pencemaran Air Sumur Masyarakat Disekitar Lokasi Tpa Berdasarkan Pengukuran Parameter Fisis
    (wahyu sari yeni, 2018-10-24) Juandi, Juandi
    The physical parameters Have been measured to identify whether the cornmunity traditonal wells have been polluted at the location of final waste destination (TPA) in Muara Fajar. Measuring the physical parameters result the value of permeability the land layers in a location of TPA which is about 3,79x10-5 cm/s to 3,34 x10-3 cm/s. Theses showed that the velocity of the moving a water flow or permeability was small. The result of measuring the land cavacity in a location af the TPA are within the range of 0,15 kg/cm2 to 1,350 kg/cm2 with based width is 1,00 m and depth 1m to 2 m. These result showed that the land cavacity in a location of the TPA was very strong and suitable for location the TPA. The result of analysis the physical parameters of the community well water around the TPA showed that several wells have been polluted by lindi water
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    MENENTUKAN EFISIENSI MASKER TERBAIK UNTUK PENYARING UDARA
    (perpustakaan UR, 2021-07) Azila, Nur; Malik, Usman; Juandi, Juandi
    The use of the mask is one of the most effective efforts to prevent the spread of dangerous viruses such as Covid-19. The masks themselves have many types, one of which is a medical mask, this mask uses a filter that can prevent harmful substances in the air. Masks have a type that can protect depending on the level of danger from exposure to hazardous particles in the air. This research was conducted using an experimental method in which the process of measuring the penetration power of particles with variations in distance and variations in the source power (lamp) using a lux meter with the steps (1) Preparation of the tool. (2) Pipe connection. (3) Installation of the LED light. (4) Installation of samples (masks). (5) Measurement of light intensity. (6) Data analysis. The result of the research carried out has obtained superior masks from 5 variations of masks that have been tested, namely filtered cloth masks which have an intensity value of 0 and there is no increase
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    MODEL MATEMATIKA UNTUK PREDIKSI PELEMAHAN INTENSITAS PARTIKEL OLEH MASKER BEDAH DENGAN VARIASI JARAK DAN INTENSITAS CAHAYA
    (perpustakaan UR, 2021-07) Malik, Usman; Juandi, Juandi; Fatiha, Nunuk Nur
    Pollution from motor vehicles, factory smoke, cigarettes and dust can affect lung performance and increase the risk of developing respiratory diseases such as asthma, heart disease, and premature birth. The use of masks is part of a series preventive and control measurements that can limit the spread of certain respiratory viral diseases including covid- 19.This research was conducted using an experimental method in which the process of measuring the value of the penetrating power of masks with distance variation and light intensity using a lux meter with the stages of equipment preparation, mask installation, installation of LED, lights for measuring light intensity, connecting pipes and analyzing data.The results showed the attenuation of particle intensity on surgical masks with variations in distance that occurred at a distance of 200 cm. The farther the irradiation distance, the value of the light intensity decreases and weakens. The attenuation of particle intensity on surgical masks with variations in light intensity occurred in studies with 9 Watt lighting power. The smaller the lighting power, the smaller the intensity value
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    PENENTUAN LITOLOGI DAN RESAPAN AIR BAWAH TANAH DI GERBANG UNIVERSITAS RIAU KELURAHAN SIMPANG BARU KECAMATAN TAMPAN KOTA PEKANBARU
    (perpustakaan UR, 2021-07) Santoso, Surya Adi; Juandi, Juandi
    Groundwater is one of the best water resources for clean water, which can be used to meet the needs of people's lives, such as household, irrigation, and industrial needs. Based on the theory that changes in land use will have an impact on groundwater absorption. This study aims to see and analyze underground water absorption around the gate of the University of Riau using the geoelectric method of the Schlumberger configuration. Based on the results of measurements of resistivity values and groundwater infiltration in the Gate area of Riau University, Simpang Baru, Tampan, Pekanbaru, Riau, it is interpreted for the soil layer obtained with resistivity values ranging from 235.38 to 595.66 ohm meters with a depth of obtained up to 35 meters, and for the interpretation of lithological layers, namely clay, distribution of gravel, sandstone, and sand and gravel. The underground water infiltration value obtained from the calculation results is that for the clay layer is 13.42 m/year, the gravel distribution layer is 13.42 m/year, the sandstone layer is 40.27 m/year and the sand and gravel layer is 40.27 m/year.
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    Simulasi Pengaruh Pengambilan Air Tanah Oleh Penduduk Terhadap Ketersediaan Air Tanah
    (wahyu sari yeni, 2018-10-24) Juandi, Juandi
    Extraction of groundwater that much can cause a decrease in ground water level. The negative impact of a decrease in ground water level were the intrusion of sea water, ground water quality degradation, and land subsidence. Such a condition is necessary to determine the availability of ground water that will be used for various purposes. The purpose of this study was to predict the availability of groundwater in the unconfined aquifer system in the district of Bukit Raya as a function of time. The method used in this research was the finite difference method. The data used were secondary data related to biophysical, socioeconomic community, demographic and other supporting data. The data were obtained from BPS Pekanbaru. The results showed that in the district of Bukit Raya with the population growth rate began in 2017 to 2021 was at 1.44%, the rate of decrease in the depth of the unconfined aquifer was obtained from 2017 to 2021 amounted 0.011 m/year, with a maximum error of simulation was 0.795%. The availability of groundwater began in 2017 to 2021 experienced a rate increase of 132,861.5 m 3/year.