EFEKTIVITAS AERASI DAN VARIASI PENAMBAHAN EM4 DALAM MENURUNKAN KADAR BOD PADA LIMBAH CAIR TAHU

MAHARANI, NURMALA (2024) EFEKTIVITAS AERASI DAN VARIASI PENAMBAHAN EM4 DALAM MENURUNKAN KADAR BOD PADA LIMBAH CAIR TAHU. Diploma thesis, Poltekkes Kemenkes Surabaya.

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Abstract

ABSTRAK Indonesia adalah produsen tahu yang sangat produktif, baik di rumah tangga maupun di unit industri. Membuang limbah ke lingkungan tanpa pengolahan akan mengurangi kualitas lingkungan yang ada. Limbah tahu memiliki kandungan bahan organik yang tinggi, termasuk kandungan BOD (Biologycal Oxygen Demand). Salah satu solusinya adalah pengolahan limbah tahu secara biologis, yang melibatkan penggunaan mikroorganisme, Mikroorganisme yang mampu mengolah limbah cair tahu adalah yang terdapat pada Effective Microorganism-4 (EM4). Tujuan penelitian ini mengetahui kadar BOD sebelum dan sesudah diberi perlakuan aerasi 72 jam dan penambhan EM4. Penelitian ini merupakan penelitian Quasi-Experimental. Subjek dari penelitian ini adalah kadar BOD limbah cair tahu dengan menggunakan aerasi 72 jam dan EM4. Penelitian ini menggunakan variasi kontrol, aerasi 72 jam, aerasi 72 jam dan EM4 1 ppm, aerasi 72 jam dan EM4 2 ppm dengan replikasi sebanyak 3 dan volume air limbah 10 liter. Hasil penelitian yaitu kadar BOD sebelum perlakuan 227 mg/l. penurunan kadar BOD limbah cair tahu pada perlakuan kontrol sebesar 3,5%, pada aerasi 72 jam sebesar 15%, pada aerasi 72 jam dan EM4 1 ppm sebesar 20,2% dan aerasi 72 jam dan EM4 2 ppm sebesar 27,3%. Pada penelitian ini dikatakan tidak Efektif dikarenakan penurunan kadar BOD yang didapatkan masih belum memenuhi standar baku mutu sesuai PERGUB JATIM No.72 Tahun 2013 Tentang Baku Mutu Air Limbah Bagi Industri dan/Atau Kegiatan Usaha Lainnya. Kata Kunci: Limbah cair, Industri tahu, Kadar BOD, Aerasi, EM4 EFFECTIVENESS OF AERATION AND VARIATIONS IN ADDITION OF EM4 IN REDUCING BOD LEVELS IN LIQUID TOFU WASTE Nurmala Maharani1 , Sri Poerwati2 , Beny Suyanto3 , Sunaryo4 Indonesian Ministry of Health Ministry of Health Surabaya Health Polytechnic Sanitation Study Program Magetan Campus D-III Study Program Email: nurmalamaharani5868@gmail.com ABSTRAK Indonesia is a very productive tofu producer, both in households and in industrial units. Disposing of waste into the environment without processing will reduce the quality of the existing environment. Tofu waste has a high organic material content, including BOD (Biological Oxygen Demand) content. One solution is biological processing of tofu waste, which involves the use of microorganisms. Microorganisms that are capable of processing liquid tofu waste are those found in Effective Microorganism-4 (EM4). The aim of this research was to determine BOD levels before and after being treated with 72 hours of aeration and the addition of EM4. This research is a descriptive research. The subject of this research was the BOD content of tofu liquid waste using 72 hour aeration and EM4. This research used control variations, 72 hour aeration, 72 hour aeration and EM4 1 ppm, 72 hour aeration and EM4 2 ppm with 3 replications and a wastewater volume of 10 liters. The results of the research were that the BOD level before treatment was 227 mg/l. The reduction in BOD levels of tofu liquid waste in the control treatment was 3.5%, at 72 hours aeration was 15%, at 72 hours aeration and 1 ppm EM4 was 20.2% and 72 hours aeration and 2 ppm EM4 was 27.3%. In this study, it was said to be ineffective because the reduction in BOD levels obtained still did not meet the quality standards in accordance with East Java Governor Regulation No. 72 of 2013 concerning Waste Water Quality Standards for Industry and/or Other Business Activities. Keywords: Liquid waste, Tofu industry, BOD levels, Aeration, EM4

Item Type:	Thesis (Diploma)
Contributors:	Contribution Contributor NIDN/NIDK UNSPECIFIED POERWATI, SRI nidn4028056901 UNSPECIFIED SUYANTO, BENY nidn4020016401 UNSPECIFIED SUJANGI, SUNARYO nidn4022116001
Additional Information:	1437/KTI/2024 / 10KTI2024046
Uncontrolled Keywords:	Limbah cair pabrik tahu : BOD- penuruanan ; aerasi ; EM4
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:	27 Feb 2025 01:53
Last Modified:	27 Feb 2025 01:53
URI:	http://repo.poltekkesdepkes-sby.ac.id/id/eprint/10143

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