Aisha Rifda, Ramadhania (2025) Efektifitas Bioball dan penambahan EM4 dalam proses aerobik dalam penurunan BOD pada limbah cair industri tahu. Diploma thesis, Poltekkes Kemenkes Surabaya.
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Abstract
ABSTRAK Aisha Rifda Ramadhania “ EFEKTIVITAS BIOBALL DAN PENAMBAHAN EM4 DALAM PROSES AEROBIK DALAM PENURUNAN BOD PADA LIMBAH CAIR INDUSTRI TAHU ” 94 halaman + 13 tabel + 11 gambar + 6 lampiran Home industri tahu dari bahan kacang kedelai menghasilkan limbah cair yang dapat menimbulkan pencemaran, membawa dampak negatif bagi lingkungan terutama BOD ( Biochemical oxygen demand ) di sungai. Tujuan penelitian untuk menurunkan BOD dengan metode aerasi dengan penambahan bioball dan EM4 (Effective Microorganisme) pada proses aerasi. Penelitian ini quasi experiment dengan desain pretest-posttest. Sampel air didapat dari industri tahu. Terdapat 4 kelompok variasi, sebelum perlakuan, perlakuan 8 jam, perlakuan 16 jam dan perlakuan 24 jam.Pengambilan sampel dengan teknik grab sample sebelum dan sesudah perlakuan sebanyak 36 sampel. Uji yang digunakan adalah One Way Anova. Hasil penelitian didapatkan bahwa kadar BOD mengalami penurunan dari awal 284,5 mg/l setelah perlakuan 8 jam (2,9 %), 16 jam ( 11 % ), 24 jam (25,21%). Penurunan tertinggi pada waktu kontak 24 jam dan ada indikasi semakin lama proses aerasi limbah cair tahu semakin besar menurunkan BOD. Analisis uji statistik menunjukkan p value > 0,005 menyatakan bahwa ada perbedaan penurunan kadar BOD selama proses aerasi.. Saran bagi peneliti selanjutnya dengan menambah dosis EM4, waktu kontak aerasi, debit aerasi dan volume limbah cair. Kata kunci : Bioball, EM4, BOD Limbah Tahu ABSTRACT Aisha Rifda Ramadhania " EFFECTIVENESS OF BIOBALL AND THE ADDITION OF EM4 IN AEROBIC PROCESSES IN BOD REDUCTION IN TOFU INDUSTRIAL LIQUID WASTE " 94 pages + 13 tables + 11 images + 6 appendices Home industry tofu from soybean materials produces liquid waste that can cause pollution, bringing negative impacts to the environment, especially BOD (Biochemical oxygen demand) in rivers. The purpose of the study was to reduce BOD by aeration method by adding bioballs and EM4 (Effective Microorganisms) to the aeration process. This research is a quasi experiment with a pretest-posttest design. Water samples were obtained from the tofu industry. There are 4 groups of variations, pre-treatment, 8-hour treatment, 16-hour treatment and 24-hour treatment. Sampling by grab sample technique before and after treatment was 36 samples. The test used is One Way Anova. The results of the study found that BOD levels decreased from the initial 284.5 mg/l after treatment for 8 hours (2.9%), 16 hours (11%), 24 hours (25.21%). The highest decrease in the 24-hour contact time and there is an indication that the longer the aeration process of liquid waste tofu, the greater the decrease in BOD. Statistical test analysis showed a p value of > 0.005 indicating that there was a difference in the decrease in BOD levels during the aeration process. Suggestions for the next researcher are to increase the EM4 dose, aeration contact time, aeration discharge and liquid waste volume. Keywords: Bioball, EM4, BOD Tofu Waste
| Item Type: | Thesis (Diploma) |
|---|---|
| Contributors: | Contribution Contributor NIDN/NIDK UNSPECIFIED Beny, Suyanto nidn4020016401 UNSPECIFIED Mujiyono, Mujiono nidn4004056702 UNSPECIFIED Hery, Koesmantoro nidn4026116102 |
| Additional Information: | KTI 2025006 AIS e / 1498 / 10KTI2025006 |
| Uncontrolled Keywords: | Bioball, EM4, BOD Limbah Tahu |
| Subjects: | T Technology > TD Environmental technology. Sanitary engineering |
| Divisions: | Poltekkes Kemenkes Surabaya > Jurusan Kesehatan Lingkungan > Program Studi DIII Sanitasi Magetan |
| Depositing User: | Endah Widyastuti |
| Date Deposited: | 14 Apr 2026 03:59 |
| Last Modified: | 14 Apr 2026 03:59 |
| URI: | http://repo.poltekkes-surabaya.ac.id/id/eprint/11676 |
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