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Ni Ketut Ayu Juliasih
Universitas Hindu Indonesia
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Journal : Ecotrophic, Journal of Environmental Science

 1 
SUMBER PENCEMAR KUALITAS DAN TINGKAT PENCEMARAN AIR DANAU BUYAN DI KECAMATAN SUKASADA KABUPATEN BULELENG BALI I Made Sumarya; Ni Ketut Ayu Juliasih; I Putu Sudiartawan
ECOTROPHIC : Jurnal Ilmu Lingkungan (Journal of Environmental Science) Vol 14 No 2 (2020)
Publisher : Master Program of Environmental Science, Postgraduate Program of Udayana University

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.24843/EJES.2020.v14.i02.p07

Abstract

This research objective examined the source of pollutants, water quality and water pollution level of Buyan Lake. The research conducted field observation to identify the source of pollutants, measuring the water quality and water pollution level of Lake Buyan compared to the standard of environmental quality and damage criteria. This research employed the newest standard measurement and equipment in purpose of water and wastewater inspection. Furthermore, this research used STORET method to analys the pollution level. The results discovered that the pollutant’s source was the settlement and agricultural activities around Buyan Lake. The average value of physical parameters i.e temperature, dissolved residue (TDS), suspended residue (TSS), turbidity and brightness are 23.02 oC; 127 mg.L-1, 4.71 mg L-1, 12.52 JTU; and 133.6 cm respectively. The average values ??of the chemical parameters i.e. pH, DO, BOD5, COD, NO3, NO2, Ammonia and Phosphate are 7.48, 5.95 mg.L-1*, 25.46 mg.L-1*, 42.99 mg.L-1*, 1.25 mg.L-1, 0.054 mg.L-1, 0.158 mg.L-1, and 0.149 mg.L-1 respectively. The average values ??of bacteriological parameters i.e Fecal Coliform and Total Coliform are 32.8 MPN/100 ml and 392 MPN/100 ml. The comparation results showed that DO, BOD5, COD, NO2, ammonia, phosphate, fecal coliform and total coliform exceed the Class I Standard of Water Quality. STRORET analysis confirmed a high level of pollution i.e. -40. The overall results show that Buyan Lake water is in the heavily polluted category due to domestic and agricultural activities. Keywords: Buyan Lake; Pollutant Sources; Pollution Level and Water Quality.
KUALITAS DAN TINGKAT PENCEMARAN AIR WADUK TITAB, BULELENG Ayu Meiliana Laksmi Dewi; Ni Ketut Ayu Juliasih; I Nyoman Arsana
ECOTROPHIC : Jurnal Ilmu Lingkungan (Journal of Environmental Science) Vol 16 No 1 (2022)
Publisher : Master Program of Environmental Science, Postgraduate Program of Udayana University

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.24843/EJES.2022.v16.i01.p01

Abstract

Monitoring water sources is essential to ensure the quality and quantity, one of which is in the Titab Reservoir. The purpose of the study was to assess the water quality and amount of pollution in the Titab reservoir in terms of physical, chemical, and microbiological characteristics, as well as the NVC of Tawes (Barbonymus gonionotus) fish. There are five station points for water sampling and 10 test parameters related to water quality. Data analysis compares test results with second-class water quality standards (Bali Governor Regulation No. 16/2016), IP value (pollution index), and NVC with Furton's equation. The test results obtained that the water in the Titab reservoir has a temperature of 28.97oC, TSS (0.18 mg/L), pH (8.82), BOD (3.22 mg/L), COD (16.70 mg/L), DO (6.77 mg/L), Total Phosphate (0.12 mg/L), Nitrate (0.19 mg/L) and Fecal Coliform (960 MPN/100 mL), the IP value was 1.39, and the NVC was 1.65. Thus, the pH, BOD, and Fecal Coliform levels of the Titab reservoir water did not match the specified limits, although the other parameters satisfied the water quality norms. The Titab reservoir's water is classed as mildly contaminated with the NVC value of tawes fish, referring to the Titab reservoir's polluted water. Keywords: Tawes Fish, Titab Reservoir, Water pollution, Water quality.
Co-Authors Adnyana , I Made Dwi Mertha Anak Agung Komang Suardana Ayu Meiliana Laksmi Dewi Handayani, Ni Luh Nyoman Vivi Tri Handayani, Ni Made Hanny Hafiar I Dewa Gede Yoga Sedana I Ketut Suada I Made Damriyasa I Made raka I Made Sumarya I Nyoman Arsana I Nyoman Arsana, I Nyoman I Putu Gede Suyoga I Putu Gede Suyoga I Putu Gede Suyoga I Wayan Masa Tenaya, I Wayan Masa I Wayan Wahyudi I Wayan Wahyudi, I Wayan I.G.A.T.P. Nofianti Ida Ayu Pasti Apsari Indrayanti, Ni Komang Rina Kadek Karang Agustina Made Adi Widyatmika Ni Luh Gede Suastini Ni Luh Gede Sudaryati Ni Nyoman Sri Puspa Adi Ni Wayan Merliana Dewi Pande Kadek Yusika Ryanita Puspa Adi , Ni Nyoman Sri Sari, Ni Putu Dyah Sartika Sari, Putu Dyah Sartika Suardana, A.A. Komang Sudiartawan, I Putu Sumarya, I Made Suwandani, Ni Made Ayu TRI KOMALA SARI Widayantari, Anak Agung Ayu Sauca Sunia Widyantari, A.A.A. Sauca Sunia Widyantari, Anak Agung Ayu Sauca Sunia