1. Prosiding Seminar Nasional Pengelolaan Daerah Aliran Sungai Secara Terpadu 2017

Permanent URI for this collection

https://repository.unri.ac.id/handle/123456789/9256

Browse

Browsing 1. Prosiding Seminar Nasional Pengelolaan Daerah Aliran Sungai Secara Terpadu 2017 by Author "Dewata, Indang"

Now showing 1 - 3 of 3
  • No Thumbnail Available
    Item
    Analisis Status Kualitas Air Sungai Batang Arau, Propinsi Sumatera Barat Berdasarkan Indeks Pencemaran Dan NSF-WQI
    (wahyu sari yeni, 2018-09-05) Putri, Auwilla; Osronita, Osronita; Dewata, Indang
    This study was conducted to determine water quality status and water quality index of Batang Arau River in Padang City, West Sumatera Province, Indonesia by using Pollution Index (PI) and NSF-WQI method. Water samples were collected from six stations along the main river and thirteen selected parameters were analyzed, namely: Temperature, Turbidity, total suspended solid, total dissolved solids, pH, dissolved oxygen, biological oxygen demand, ammonia, nitrates, nitrites, Total Phosphates, Fecal coliform and chemical oxygen demand. Based on the calculation, without including fecal coliform as a parameter, it is obtained that the water quality status in the upstream part, station 1 and 2, have a good water quality criteria (PI value 0.58 and 0.61). Meanwhile, the middle stream part, station 3 and 4, belong to a moderately polluted criteria (PI 5.97 and 5.65), and the downstream part, station 5 and 6, go into a polluted criteria (PI 5.97 and 5.65). The Water Quality Index shows a good category on stations 1, 2 and 3 (NSF-WQI values in the range 71.89-72.44), whereas at stations 4, 5 and 6 fall into a medium category (NSF-WQI value at 63.87-68.48). When fecal coliform is included, there is a decline of water quality status and index of Batang Arau River. The water quality status indicates a moderately polluted at station 1 (PI : 2.07) and polluted on station 2, 3, 4, 5 (PI value in range 5.63-6.06). The Water Quality Index shows medium category in all monitoring stations (NSF-WQI score in the range 54.65-63.32). It is expected that the research results can be used to improve the quality of Batang Arau River.
  • No Thumbnail Available
    Item
    Model Dinamik Pertumbuhan Penduduk Dan Kualitas Lingkungan Di Kota Padang, Provinsi Sumatera Barat
    (wahyu sari yeni, 2018-08-19) Dewata, Indang; Umar, Iswandi
    Jumlah penduduk yang banyak merupkan masalah utama di banyak negara berkembang. Pertumbuhan penduduk yang tinggi berdampak terhadap kualitas lingkungan. Tujuan penelitian ini mengambarkan permodelan dinamis dan dampak pertumbuhan penduduk terhadap kualitas lingkungan di Kota Padang. Metode yang digunakan dalam permodelan dinamik adalah pendekatan sistem dengan menggunakan software powersim 10. Kota Padang memiliki angka pertumbuhan penduduk sekitar 1,3 persen/tahun pada periode 2000-2016, dan diperkirakan pada tahun 2050 jumlah penduduk meningkat menjadi 951.071 jiwa. Jumlah sampah yang diproduksi setiap tahun sebanyak 2.376 ton/tahun, dan akan meningkat menjadi 2.378 pada tahun 2050. Oleh karena itu, maka perlu adanya peran pemerintah dalam mengontrol pertumbuhan penduduk dan memperbaiki kualitas lingkungan.
  • No Thumbnail Available
    Item
    Zona Rawan Longsor Pada Kawasan Permukiman Di Kabupaten Tanah Datar
    (wahyu sari yeni, 2018-08-19) Umar, Iswandi; Dewata, Indang; Barlian, Eri; Hermon, Dedi
    Natural disasters will bring harm to human life, and one of the efforts to minimize that is with disaster mitigation. Determination of landslide hazard zones in settlement areas is part of mitigation efforts in the sustainable use of land resources. The purpose of this study is to map the landslide hazard zone in the settlement area in Tanah Datar District. For the determination of landslide hazard zone, an overlay method is used by scoring technique using geographic information system (GIS). The analysis shows that Tanah Datar District has 35,6 percent of high landslide hazard areas, and about 38 percent of settlement areas are in high landslide hazard zones