Optimalisasi Penurunan COD dan TSS Pada Pengolahan Air Limbah Pabrik Penyamakan Kulit di Jawa Timur

Salsabila, Riska (2025) Optimalisasi Penurunan COD dan TSS Pada Pengolahan Air Limbah Pabrik Penyamakan Kulit di Jawa Timur. Other thesis, Institut Teknologi Sepuluh Nopember.

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Abstract

Air limbah penyamakan kulit merupakan salah satu air limbah dengan kadar polutan tinggi, terutama kadar COD dan TSS tinggi, dimana sangat berbahaya bagi lingkungan. Maka, penelitian ini dilakukan untuk menurunkan kadar COD dan TSS air limbah penyamakan kulit dengan dua metode, yaitu metode koagulasi-flokulasi menggunakan koagulan aluminium sulfat, PAC, dan besi sulfat dan polimer anionik sebagai flokulan, serta kombinasi metode koagulasi/flokulasi dengan proses aerobik (nitrifikasi). Diperoleh hasil dosis polimer anionik optimum pada volume 3 mL dengan efisiensi penurunan kadar COD dan TSS masing-masing sebesar 29.13% dan 98,18%. Pada koagulan aluminium sulfat efisien terhadap penurunan COD sebesar 29,13%, dan koagulan PAC efisien untuk penurunan TSS sebesar 99,52%. Ketidaksesuaian hasil pada penelitian variasi jenis kaogulan karena dosis koagulan berlebih. Dosis koagulan aluminium sulfat berpengaruh pada mikroorganisme nitrifikasi dengan penurunan COD sebesar 84,55% pada pH penambahan kapur atau pH awal koagulasi pH 9, peningkatan kadar TSS disebabkan kurangnya nutrisi pada mikroorganisme nitrifikasi sehingga dilakukan penambahan nutrisi ke dalam sampel nitrifikasi dan optimum pada 5 mL larutan gula 3% dengan efisiensi penurunan COD dan TSS sebesar 90,15% dan 82,52%.
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Tannery wastewater is one of the wastewater with high pollutant levels, especially high COD and TSS levels, which are very harmful to the environment. So, this research was conducted to reduce COD and TSS levels of tannery wastewater with two methods, namely the coagulation-flocculation method using aluminium sulfate, PAC, and iron sulfate coagulants and anionic polymers as flocculants, as well as a combination of coagulation/flocculation methods with aerobic processes (nitrification). The optimum dose of anionic polymer was obtained at a volume of 3 mL with a COD and TSS reduction efficiency of 29.13% and 98.18%, respectively. The aluminium sulphate coagulant was efficient to reduce COD by 29.13%, and the PAC coagulant was efficient to reduce TSS by 99.52%. The discrepancy in the results of the research on variations in the type of coagulant due to excessive coagulant doses. The dose of aluminium sulfate coagulant affects nitrifying microorganisms with a COD reduction of 84.55% at the pH of lime addition or the initial pH of coagulation pH 9, the increase in TSS levels is due to the lack of nutrients in nitrifying microorganisms so that nutrients are added to the nitrification sample and optimum at 5 mL of 3% sugar solution with a COD and TSS reduction efficiency of 90.15% and 82.52%.

Item Type:	Thesis (Other)
Uncontrolled Keywords:	Anionik polymer, Coagulation-Flocculation, Nitrification, Tannery wastewater, Air limbah penyamakan kulit, Koagulasi-Flokulasi, Polimer anionik, Nitrifikasi
Subjects:	Q Science > QD Chemistry > QD547 Flocculation, precipitation, adsorption, etc.
Divisions:	Faculty of Science and Data Analytics (SCIENTICS) > Chemistry > 47201-(S1) Undergraduate Thesis
Depositing User:	Riska Salsabila
Date Deposited:	03 Feb 2025 13:39
Last Modified:	03 Feb 2025 13:39
URI:	http://repository.its.ac.id/id/eprint/117943

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