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Pemodelan Resiko Kontaminasi Sumur Rakyat oleh Sumur Resapan Limbah Septic Tank
Abstract
Septic tank merupakan salah satu pengelolaan limbah sederhana dan merupakan sumber dari limbah domestik. Limbah septic tank dapat mempengaruhi sumber air bersih seperti sumur, sehingga posisi sumber air harus benar supaya terbebas dari kontaminan BOD dari septic tank. Tujuan dari artikel ini adalah mengembangkan model transport kontaminan sumur resapan septic tank untuk memberikan rekomendasi jarak aman antara sumur dengan septic tank. Model transport kontaminan dibagi menjadi dua zona yaitu zona unsaturated dan saturated yang keduanya dipengaruhi oleh proses adveksi, dispersi dan biodegradasi. Berdasarkan hasil perhitungan dengan menggunakan model yang dikembangkan menunjukkan bahwa pada model zona unsaturated dengan kedalaman 7 meter dengan waktu kurang dari 5000 hari mengandung BOD dibawah ambang batas, sedangkan pada zona saturated pada jarak 10 meter dengan waktu dibawah 3000 hari kandungan BOD masih aman, tetapi jika waktu diatas 5000 hari untuk zona unsaturated dan diatas 3000 hari untuk zona saturated konsentrasi BOD diatas ambang batas yang dikeluarkan oleh Pemerintah Republik Indonesia.
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DOI: http://dx.doi.org/10.36055/tjst.v12i1.6611
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