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Konsentrasi Nitrat Fosfat di Sungai Banjir Kanal Barat dan Sungai Silandak Semarang Concentration of Nitrates Phosphates in the Banjir Kanal Barat and Silandak Rivers in Semarang Adriani, Arina; Ain, Churun; Febrianto, Sigit
Management of Aquatic Resources Journal (MAQUARES) Vol 8, No 4 (2019): MAQUARES
Publisher : Fakultas Perikanan dan Ilmu Kelautan, Universitas Diponegoro

Show Abstract | Download Original | Original Source | Check in Google Scholar | Full PDF (773.541 KB) | DOI: 10.14710/marj.v8i4.26550

Abstract

Sungai Banjir Kanal Barat dan Sungai Silandak merupakan sungai yang alirannya bermuara di Teluk Semarang. Lokasi sungai yang berada di tengah kota dan padatnya aktivitas manusia (pemukiman dan industri), akan berpengaruh terhadap kualitas air di sekitar aliran sungai. Tujuan dari penelitian ini adalah untuk mengetahui konsentrasi nitrat dan fosfat serta untuk mengetahui status trofik Sungai Banjir Kanal Barat dan Sungai Silandak. Penelitian ini dilaksanakan pada tanggal 15 Oktober – 1 November 2018. Metode yang digunakan dalam penelitian ini adalah metode deskriptif. Penentuan titik lokasi sampling menggunakan metode purposive sampling, dilakukan di 7 (tujuh) titik  dengan 2 (dua) kali pengulangan dari hulu sampai hilir dengan karakteristik penggunaan lahan berupa pemukiman, industri, perairan dan vegetasi. Data yang dianalisis adalah nitrat, fosfat, pH, oksigen terlarut, salinitas, kedalaman, arus, dan suhu. Nilai rata-rata konsentrasi nitrat di Sungai Banjir Kanal Barat yaitu 2,84 mg/l sedangkan fosfat yaitu 1,51 mg/l. Nilai rata-rata konsentrasi nitrat di Sungai Silandak yaitu 2,11 mg/l, sedangkan fosfat yaitu 1,39 mg/l. Sungai Banjir Kanal Barat dan Sungai Silandak termasuk dalam perairan mesotrofik berdasarkan konsentrasi nitrat, sedangkan berdasarkan konsentrasi fosfat dikategorikan dalam perairan eutrofik. Banjir Kanal Barat and Silandak Rivers are rivers whose flow empties into the Gulf of Semarang. The location of the river in the middle of the city and the density of human activities (settlements and industry), will affect the quality of water around the river flow. The purpose of this study was to determine land use around the river, to determine the concentration of nitrate and phosphate and to determine the trophic status of the Banjir Kanal Barat and Silandak Rivers. This research was conducted on 15 October - 1 November 2018. The method used in this study was descriptive method. Determination of sampling location using purposive sampling method, carried out in 7 (seven) points with 2 (two) repetitions from upstream to downstream with land use characteristics in the form of settlements, industries, waters and vegetation. Data analyzed were nitrate, phosphate, pH, DO, salinity, depth, current, and temperature. The average value of nitrate concentration in the Banjir Kanal Barat River is 2.84 mg/l while phosphate is 1.51 mg/l. The average value of nitrate concentration in Silandak River is 2.11 mg/l, while phosphate is 1.39 mg/l. The Banjir Kanal Barat River and Silandak River are included in the mesotrophic waters based on nitrate concentration, while based on phosphate concentration are categorized in eutrophic waters. 
POLLUTION INDEX AND SEDIMENTATION RATE BASED ON LAND USE AT BANJIR KANAL BARAT AND SILANDAK RIVERS, SEMARANG Ain, Churun; Rudiyanti, Siti; Dominig, Amryta; Adriani, Arina; Asih, Dilia Puspita
Saintek Perikanan : Indonesian Journal of Fisheries Science and Technology Vol 16, No 3 (2020): SAINTEK PERIKANAN
Publisher : Fakultas Perikanan dan Ilmu Kelautan, Universitas Diponegoro

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.14710/ijfst.16.3.%p

Abstract

Land use around the river, can affect the condition water quality of waters. The purpose of this study are to determine the pollution index and the rate of river sedimentation, and land use around the Banjir Kanal Barat and Silandak River. The method for sampling was purposive sampling. Sampling was carried out in the Banjir Kanal Barat and Silandak River, each of which had 5 points and 2 repetitions (P1 and P2). The variables analyzed were TSS, BOD, COD, total coliform where analyzed with Indonesian Standard National (SNI); DO, pH, temperature, discharge of water analyzed with Water Quality Checker (WQC), Buchanan method used to analyzed sedimentation rate, and sediment fraction. The results of the study, showed that IP in the Banjir Kanal Barat River obtained an IP value of 4.13 (lightly polluted), while the Silandak River obtained an IP value of 4.69 (lightly polluted). The highest sedimentation rate in the Banjir Kanal Barat River with a value of 35.64 tons / day, while the Silandak River has the highest value of 55.81 tons / day. Sediment fraction in Banjir Kanal Barat River is dominated by clay, and Silandak River it is dominated by clay. Land cover in Banjir Kanal Barat river are 3% industry, 85% settlement, 0% water and 12% vegetation, and Silandak River are 7% industry, 69% settlement, 5% water and 7% vegetation.