Septiariva, Iva Yenis (2014) Pengaruh Penggunaan Koagulan (Air Asam Tambang, Aluminium Sulfat) Dalam Pengolahan Air Run Off Pertambangan Batu Bara. Undergraduate thesis, Institut Teknologi Sepuluh Nopember Surabaya.
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Abstract
ir run off mempunyai kekeruhan dan TSS yang tinggi. Selain air
run off, permasalahan yang dihadapi oleh industri pertambangan
adalah keluarnya air asam tambang.Air asam tambang (AAT)
memiliki pH rendah dan mengandung logam berat. AAT dan air
run off apabila tidak dikelola akan mencemari lingkungan.
Kandungan Fe total dalam AAT berpotensi sebagai koagulan.
Penelitian ini bertujuan untuk mengolah air run off pertambangan
batu bara melalui proses koagulasi-flokulasi dengan metode jar
test.
Jar test dilakukan dengan pengadukan cepat 200 rpm selama 60
detik dan pengadukan lambat 40 rpm selama 15 menit. Variabel
bebas adalah dosis koagulan, pH air sampel, pH AAT, kekeruhan
awal, kecepatan pengadukan lambat dan waktu pengendapan.
Variabel terikat yaitu TSS, kekeruhan dan pH akhir.
Berdasarkan penelitian ini dapat disimpulkan bahwa penggunaan
air asam tambang berpengaruh dalam penurunan TSS dan
kekeruhan.Penggunaan air asam tambang sebagai koagulan lebih
efektif daripada koagulan aluminium sulfat.Dosis dan pH optimum
air asam tambang dalam pengulahan air run off adalah 1,083 mg
Fe/L dan pH 7. Sedangkan dosis dan pH aluminium sulfat adalah
300 mg/L dan pH 7. Kecepatan pengadukan optimum adalah saat
20 rpm sedangkan waktu pengendapan optimum saat 30 menit
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Run off water in coal mining generally has high turbidity and TSS
(Total Suspended Solid). Beside of run off water, another
problem in mining industry is the presence of Acid Mine Drainage
(AMD). Acid mine drainage (AMD) has low pH and containing
heavy metals. Without a good processing, AMD and run off water
can contamine the enviroment. Total content of Fe in acid mine
drainage potentially become coagulant. The main purpose of this
research is to treat coal mining run off water by coagulationflocculation
process
by
jar-test
method.
Jar
test
was
done by applying 200 rpm rapid mix during 60
seconds and 40 rpm slow mix during 15 minutes. The
independent variables were coagulant dosage, pH of the sample
water, pH of AMD, turbidity, slow mix and settling time. The
dependent variables were TSS, turbidity and pH.
Based on the research, it can be concluded that the use of acid
mine drainage affects to the decreasing of TSS and turbidity. The
use of acid mine drainage as coagulant was more effective than
aluminium sulfate coagulant. The dosage and the optimum pH of
acid mine water in the processing of run off drainage was 1,083
mg Fe/L and pH 7. Whereas the dosage and the pH of aluminium
sulfate was 300 mg/L and pH 7. The speed of optimum stirring
was 20 rpm and the optimum settling time was 30 minutes
| Item Type: | Thesis (Undergraduate) |
|---|---|
| Additional Information: | RSL 628.162 2 Sep p |
| Uncontrolled Keywords: | air asam tambang, air run off, koagulan |
| Subjects: | T Technology > TD Environmental technology. Sanitary engineering > TD430 Water--Purification. T Technology > TD Environmental technology. Sanitary engineering > TD455 Chemical precipitation. Coagulation. Flocculation. Water--Purification--Flocculation. |
| Divisions: | Faculty of Civil Engineering and Planning > Environment Engineering > 25201-(S1) Undergraduate Thesis |
| Depositing User: | EKO BUDI RAHARJO |
| Date Deposited: | 24 Sep 2020 05:38 |
| Last Modified: | 24 Sep 2020 05:38 |
| URI: | http://repository.its.ac.id/id/eprint/82038 |
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