Pengolahan Limbah Cair Tahu Untuk Menurunkan Kadar TSS Dan BOD
Tedy Dian Pradana, Suharno Suharno, Apriansyah Apriansyah
Abstract
Abstract: Tofu Liquid Waste Processing System Using Aeration And Filtrasi To Lower Levels Of TSS And BOD . The level of TSS and BOD of tofu wastewater in tofu industry in Tebas Subdistrict has exceeded the standard, is TSS = 1320 mg/L in NAB = 200 mg/L and BOD = 161 mg/L in NAB = 150 mg/L. The industrial liquid waste of tofu contains organic substances 40% -60% protein, 25% -50% carbohydrate, 10% fat and other suspended solids in nature can undergo physical, chemical and biological changes that will produce toxic substances. The purpose of this study in to know effectiveness of liquid waste processing know with aeration and filtration process to lower TSS and BOD levels in tofu wastewater. This research is Quasi Experimental with design One Group Pretest-Posttest.. The research sample is 24 samples with 6 repetitions. Statistical test used Paired Sample T-Test with 95% cofidence level. The test results showed the effectiveness of significant decrease in TSS and BOD levels before treatment was given after treatment with aeration and filtration with TSS (p=0,000 <α=0,05) and BOD p=0,000 <α=0.05).
Abstrak: Pengolahan Limbah Cair Tahu Untuk Menurunkan Kadar TSS Dan BOD . Kadar TSS dan BOD limbah cair tahu di industri rumah tangga tahu di Kecematan Tebas sudah melebihi standar, yaitu TSS = 1320 mg/L dengan NAB = 200 mg/L dan BOD = 161 mg/L dengan NAB = 150 mg/L. Limbah cair industri tahu mengandung zat-zat organik yaitu protein 40%-60%, karbohidrat 25%-50%, lemak 10% dan padatan tersuspensi lainnya yang di alam dapat mengalami perubahan fisika, kimia dan hayati yang akan menghasilkan zat toksik. Tujuan penelitian ini adalah untuk mengetahui efektifitas pengolahan limbah cair tahu menggunakan sistem aerasi dan filtrasi untuk menurunkan kadar TSS dan BOD pada limbah cair tahu. Penelitian ini menggunakan rancangan Quasi Eksperimental dengan model One Group Pretest-Posttest. Sampel penelitian sebanyak 24 sampel dengan 6 kali pengulangan. Uji statistik yang digunakan Paired Sample T-test dengan tingkat kepercayaan 95%. Hasil uji menunjukan adanya efektifitas penurunan kadar TSS dan BOD yang signifikan sebelum diberikan perlakuan dengan sesudah diberi perlakuan aerasi dan filtrasi dengan hasil TSS yaitu (p=0,000 < α=0,05) dan BOD (p=0,000 < α=0,05).
Keywords
Aerasi; Filtrasi; Kadar TSS; BOD
DOI:
https://doi.org/10.30602/jvk.v4i2.9
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