Karami, Abdillah Akmal (2024) Prediksi Kualitas Air Sungai Wrati Pasuruan Dengan Membandingkan Metode QUAL2KW dan WASP. Masters thesis, Institut Teknologi Sepuluh Nopember.
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Abstract
Pencemaran dari point sources berupa pembuangan air limbah industri dan saluran limbah rumah tangga yang banyak terdapat pada ruas Sungai Wrati, sementara pencemaran non point sources banyak terjadi pada ruas Sungai Wrati bagian tengah menuju ke hilir. Pencemaran non point sources berupa air limbah rumah tangga dan air dari daerah pertanian yang masuk ke sungai dengan debit bervariasi. Tujuan penelitian ini adalah untuk memprediksi kualitas air Sungai Wrati dengan model QUAL2KW dan WASP dengan 3 skenario serta memvalidasinya dengan MAPE. Prediksi kualitas air Sungai Wrati diperlukan untuk menghitung besarnya potensi polutan akibat pemanfaatan air sungai dengan menggunakan Metode Indeks Pencemar (IP). Pemodelan distribusi polutan menggunakan Model QUAL2KW dan WASP. Parameter yang dimodelkan yaitu suhu, TSS, fosfat, nitrat, amonia, pH, DO, dan BOD. Hasil penelitian ini menunjukkan indeks pencemar data aktual sebesar 4,92 dengan kategori tercemar ringan. Hasil angka indeks pencemar simulasi model QUAL2KW dari skenario 1,2, dan 3 berturut-turut 6,69 (cemar sedang), 6,34 (cemar sedang), dan 2,89 (cemar ringan). Untuk angka indeks pencemar simulasi model WASP dari skenario 1,2, dan 3 masing-masing 5,1 (tercemar sedang), 5,06 (tercemar sedang), dan 0,97 (tidak tercemar). Hasil validitas simulasi model menggunakan MAPE untuk QUAL2KW sebesar 0,56% dan WASP sebesar 0,48%. Kesimpulannya QUAL2KW memiliki nilai eror lebih kecil daripada WASP. Namun, kedua model memiliki nilai eror <10% sehingga hasil model dikategorikan sangat baik.
The pollution originating from specific locations, known as point sources, manifests as the release of industrial effluent and domestic wastewater. This type of pollution is frequently observed in the Wrati River region. Conversely, non-point source pollution frequently arises in the central portion of the Wrati River, namely towards the downstream direction. Non-point source pollution refers to the contamination of rivers by home wastewater and water from agricultural areas, which enter the rivers with different amounts of flow. This research aims to predict the water quality of the Wrati River using the QUAL2KW and WASP models with 3 scenarios and validate it with MAPE. Assessing the water quality of the Wrati River is essential for evaluating the likelihood of contaminants arising from the utilisation of river water, employing the Pollutant Index (IP) Method. The QUAL2KW and WASP models are utilised for pollutant distribution modelling. The parameters that have been simulated are temperature, total suspended solids (TSS), phosphate, nitrate, ammonia, pH, dissolved oxygen (DO), and biochemical oxygen demand (BOD). The research findings indicate that the current data pollution index falls within the lightly polluted group, with a value of 4.92. The pollution index numbers resulting from the simulation of the QUAL2KW model for scenarios 1, 2, and 3 are as follows: 6.69 (indicating moderate pollution), 6.34 (indicating moderate pollution), and 2.89 (indicating light pollution). The pollutant index values for the WASP model simulation in scenarios 1, 2, and 3 are 5.1 (moderately polluted), 5.06 (moderately polluted), and 0,97 (not polluted) accordingly. The model simulation using MAPE for QUAL2KW yielded a validity value of 0.56%, while the validity result for WASP was 0.48%. In conclusion, QUAL2KW has a smaller error value than WASP. However, both models have an error value of <10%, so the model results are categorized as very good.
| Item Type: | Thesis (Masters) |
|---|---|
| Uncontrolled Keywords: | Sungai Wrati, QUAL2KW, WASP. |
| Subjects: | T Technology > TD Environmental technology. Sanitary engineering > TD259.2 Drinking water. Water quality T Technology > TD Environmental technology. Sanitary engineering > TD430 Water--Purification. |
| Divisions: | Faculty of Civil, Planning, and Geo Engineering (CIVPLAN) > Environmental Engineering > 25101-(S2) Master Thesis |
| Depositing User: | Abdillah Akmal Karami |
| Date Deposited: | 30 Jan 2024 01:29 |
| Last Modified: | 30 Aug 2024 02:53 |
| URI: | http://repository.its.ac.id/id/eprint/105738 |
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