Pengaruh diameter dan konfigurasi media Bioball dalam sistem Biofilter Anaerob-Aerob pada kinerja pengolahan air limbah domestik : studi kasus pengolahan limbah Perpustakaan UI di Depok = Effect of diameter and configuration Bioball media in Anaerobic-Aerobic Bio Filter system on the waste water treatment performance : waste treatment case study at Library UI, Depok (Fakultas Teknik Universitas Indonesia, 2013)