Swandani, Pradsindra Amyrtha and Emma Yuliani, ST., MT., Ph.D and Dr. Eng. Ir. Riyanto Haribowo, ST., MT., IPM (2023) Studi Penentuan Status Mutu Air dengan Menggunakan Metode STORET, Indeks Pencemaran, dan CCME-WQI di Sungai Metro Kota Malang, Jawa Timur. Sarjana thesis, Universitas Brawijaya.
Abstract
Sungai Metro Kota Malang merupakan anak Sungai Brantas yang dimanfaatkan oleh penduduk setempat untuk kebutuhan air baku bagi rumah tangga, perkotaan, industri, peternakan, irigasi, dan rekreasi. Permasalahan yang terjadi di Sungai Metro Kota Malang saat ini adalah kualitas air sungai yang memburuk yang disebabkan oleh kebiasaan masyarakat sekitar yang banyak memanfaatkan sungai untuk berbagai macam kegiatan seperti industri, peternakan, perkebunan, dan aktivitas rumah tangga seperti air bilasan dan air limbah dapur. Selain itu, kebiasaan masyarakat sekitar membuang sampah langsung ke badan sungai tanpa melalui proses pengolahan terlebih dahulu juga memperburuk tingkat kualitas air di Sungai Metro Kota Malang. Studi ini akan membahas mengenai kualitas air di Sungai Metro Kota Malang, Jawa Timur sesuai dengan Peraturan Pemerintah Nomor 22 Tahun 2021 serta membandingkan metode penentuan status mutu air dengan menggunakan Metode STORET, Indeks Pencemaran, dan CCME-WQI. Titik pengambilan sampel pada studi ini dibagi menjadi tiga titik lokasi yaitu di Jembatan Joyogrand, Jembatan Bandulan, dan Jembatan Tirtosari dengan menggunakan time series data yang diambil sebanyak 2 kali dalam setahun. Parameter yang digunakan dalam studi ini adalah temperatur, TDS, TSS, pH, BOD, COD, DO, nitrat (NO3-N), nitrit (NO2-N), total fosfat, dan total coliform. Dari hasil perhitungan didapatkan status mutu air Sungai Metro Kota Malang periode tahunan dengan menggunakan Metode STORET adalah pada lokasi Jembatan Joyogrand 25% kondisi air tercemar sedang dan 75% kondisi air tercemar berat. Pada lokasi Jembatan Bandulan diperoleh 20% kondisi air tercemar ringan dan 80% kondisi air tercemar berat. Sedangkan pada lokasi Jembatan Tirtosari diperoleh 60% kondisi air tercemar sedang dan 40% kondisi air tercemar berat. Pada Metode Indeks Pencemaran didapatkan hasil pada lokasi Jembatan Joyogrand dan Bandulan 80% kondisi air tercemar ringan dan 20% kondisi air tercemar sedang. Sedangkan pada lokasi Jembatan Tirtosari diperoleh 100% kondisi air tercemar ringan. Sedangkan pada Metode CCME-WQI didapatkan hasil pada lokasi xii Jembatan Joyogrand 20% kondisi air baik, 40% kondisi air cukup, 20% kondisi air kurang, dan 20% kondisi air buruk. Pada lokasi Jembatan Bandulan diperoleh 40% kondisi air baik dan 60% kondisi air kurang. Sedangkan pada lokasi Jembatan Tirtosari diperoleh 60% kondisi air baik, 20% kondisi air kurang, dan 20% kondisi air buruk. Adapun hasil analisis status mutu air selama 5 tahun, pencemaran terbesar terjadi pada bagian hulu Sungai Metro Kota Malang yaitu pada titik Jembatan Joyogrand. Serta penyebab terbesar tercemarnya Sungai Metro Kota Malang adalah tingginya kandungan BOD dan NO2-N (nitrit) di setiap titik lokasi pemantauan.
English Abstract
Metro River of Malang City is a tributary of the Brantas River which is used by local residents for raw water needs for households, urban areas, industry, livestock, irrigation, and recreation. The problem that occurs in the Metro River of Malang City at this time is the deteriorating river water quality caused by the habit of the surrounding community who use the river for various activity such as industry, livestock, plantation, and household activities such as rinse water and kitchen wastewater. In additional, the habit of the surrounding community to dispose of garbage directly into the river without going through the waste water disposal installation process first also worsen the level of water quality in the Metro River of Malang City. This study will discuss the water quality of the Metro River in Malang City, East Java in accordance with Government Regulation No. 22 of 2021 and compare methods for determining water quality status using the STORET Method, Pollution Index Method, and CCME-WQI. The sampling points in this study are divided into three locations, namely Joyogrand Bridge, Bandulan Bridge, and Tirtosari Bridge using time series data taken twice a year. The parameters used in this study are temperature, TDS, TSS, pH, BOD, COD, DO, nitrate (NO3-N), nitrite (NO2-N), total phosphate, and total coliform. From the calculation results, the water quality status of Metro River Malang City for the annual period using STORET Method is at the Joyogrand Bridge 25% of the water conditions are moderately polluted and 75% of the water conditions are heavily polluted. At the Bandulan Bridge, 20% of the water conditions are lightly polluted and 80% of the water conditions are heavily polluted. Meanwhile, at the Tirtosari Bridge, 60% of water conditions are moderately polluted and 40% of water conditions are heavily polluted. Using Pollution Index Method, the results obtained at the Joyogrand and Bandulan Bridge are 80% lightly polluted water conditions and 20% moderately polluted water conditions. While at the Tirtosari Bridge, 100% of the water conditions are lightly polluted. While in the CCMEWQI Method, the results obtained at the Joyogrand Bridge is 20% good water conditions, xiv 40% fair water conditions, 20% marginal water conditions, and 20% poor water conditions. At the Bandulan Bridge, 40% good water conditions and 60% marginal water conditions. While at the Tirtosari Bridge location, 60% good water conditions, 20% marginal water conditions, and 20% poor water conditions. As for the results of the analysis of water quality status for 5 years, the biggest pollution occurred in the upstream part Metro River of Malang City that on Joyogrand Bridge. And the biggest cause of pollution of Metro River Malang City is the high content of BOD and NO2-N (nitrite) at each monitoring point.
| Item Type: | Thesis (Sarjana) |
|---|---|
| Identification Number: | 0523070345 |
| Uncontrolled Keywords: | Sungai Metro Kota Malang, Status Mutu Air, Metode STORET, Metode Indeks Pencemaran, Metode CCME-WQI |
| Subjects: | 600 Technology (Applied sciences) > 627 Hydraulic engineering > 627.5 Reclamations, Irrigation, related topics > 627.52 Irrigation |
| Divisions: | Fakultas Teknik > Teknik Pengairan |
| Depositing User: | Endang Susworini |
| Date Deposited: | 06 Oct 2023 06:15 |
| Last Modified: | 06 Oct 2023 06:15 |
| URI: | http://repository.ub.ac.id/id/eprint/203597 |
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