Efektivitas Pengolahan Limbah Industri Tahu secara Biologis dalam Stabilisasi Zat Organik

Putri, Nanda Septa Agatha (2024) Efektivitas Pengolahan Limbah Industri Tahu secara Biologis dalam Stabilisasi Zat Organik. Other thesis, Institut Teknologi Sepuluh Nopember.

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Abstract

Permasalahan pencemaran lingkungan akibat limbah industri tahu ini telah terjadi di Sungai Murong yang terletak di Kabupaten Jombang. Sentra industri tahu di Kecamatan Jogoroto membuang limbah cair hasil industri ke aliran Sungai Murong dengan kondisi limbah tahu yang tidak terolah dengan baik sehingga membahayakan lingkungan. Pada penelitian ini, akan dilakukan uji pengolahan biologis limbah secara anaerobik-aerobik dengan memanfaatkan peranan mikroorganisme yang secara alami terkandung di dalam limbah (indigenous) maupun penambahan mikroorganisme dari luar (exogenous). Pengolahan secara biologis dimaksudkan untuk meningkatkan stabilitas zat organik hingga rasio BOD/COD mencapai zona stabil. Penelitian skala laboratorium dilakukan dengan mengkaji pengaruh penambahan dan tanpa penambahan mikroorganisme exogenous serta konsentrasi air limbah terhadap efektivitas pengolahan limbah industri secara biologis dalam stabilisasi zat organik. Mikroorganisme exogenous yang ditambahkan yaitu Sacchromyces cerevisiae dan Streptomyces sp. Variasi konsentrasi air limbah yang digunakan yaitu konsentrasi 100%, 75%, 50%, dan 25%. Adapun parameter utama yang dianalisis yaitu COD dan BOD serta parameter pendukung yaitu pH dan suhu. Dilakukan analisis two-way ANOVA untuk mengetahui signifikansi pengaruh masing-masing variabel independen. Hasil penelitian menunjukkan bahwa dengan adanya penambahan mikroorganisme exogenous berpengaruh signifikan terhadap efektivitas pengolahan biologis dalam stabilisasi zat organik dengan nilai laju penurunan rasio BOD/COD lebih besar dibandingkan tanpa penambahan mikroorganisme berturut-turut pada konsentrasi 100%, 75%, 50%, dan 25% yaitu 56,94%, 43,98%, 39,65%, dan 15,66%. Nilai konsentrasi COD setelah pengolahan pada setiap variasi konsentrasi berturut-turut 2320 mg/L, 1813,33 mg/L, 1140,00 mg/L, dan 656,67 mg/L. Konsentrasi air limbah juga berpengaruh signifikan terhadap efektivitas pengolahan dimana semakin kecil konsentrasi maka semakin kecil nilai laju penurunan rasio BOD/COD. Konsentrasi air limbah pada rentang seluruh variasi dengan nilai COD sebesar 1000 mg/L hingga 4500 mg/L dapat diolah secara biologis dengan optimal pada kondisi aerobik.
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The problem of environmental pollution due to tofu industrial waste has occurred in the Murong River, located in Jombang Regency. The tofu industrial center in Jogoroto District dumps liquid industrial waste into the Murong River, where the tofu waste is not properly processed, thereby endangering the environment. In this research, an anaerobic-aerobic biological treatment of waste will be tested by utilizing the role of microorganisms that are naturally contained in the waste (indigenous) and the addition of microorganisms from outside (exogenous). Biological processing is intended to increase the stability of organic substances until the BOD/COD ratio reaches a stable zone. Laboratory-scale research was carried out by examining the effect of adding and not adding exogenous microorganisms and wastewater concentration on the effectiveness of biological wastewater treatment in stabilizing organic matter. The exogenous microorganisms added were Saccharomyces cerevisiae and Streptomyces sp. Variations in wastewater concentration used are 100%, 75%, 50%, and 25%. The main parameters analyzed are COD and BOD, with supporting parameters are pH and temperature. Two-way ANOVA analysis was carried out to determine the significance of the influence of each independent variable. The results of the research show that the addition of exogenous microorganisms has a significant effect on the effectiveness of biological processing in stabilizing organic substances, with the rate of decrease in the BOD/COD ratio being greater than without the addition of microorganisms, specifically at concentrations of 100%, 75%, 50%, and 25%, namely 56.94%, 43.98%, 39.65%, and 15.66%. The COD values after treatment at each concentration variation were 2320 mg/L, 1813.33 mg/L, 1140.00 mg/L, and 656.67 mg/L, respectively. The concentration of wastewater also has a significant effect on the effectiveness of processing, where the smaller the concentration, the smaller the value of the BOD/COD ratio reduction rate. Wastewater concentrations in all variations with COD values of 1000 mg/L to 4500 mg/L can be treated optimally under aerobic conditions.

Item Type:	Thesis (Other)
Uncontrolled Keywords:	Limbah Tahu, Pengolahan Biologis, Rasio BOD/COD, Sistem Anaerobik–Aaerobik, Anaerobic-Aerobic System, Biological Treatment, BOD/COD Ratio, Tofu Liquid Waste
Subjects:	T Technology > TD Environmental technology. Sanitary engineering > TD192.5 Bioremediation T Technology > TD Environmental technology. Sanitary engineering > TD420 Water pollution T Technology > TD Environmental technology. Sanitary engineering > TD756.45 Anaerobic treatment
Divisions:	Faculty of Civil, Planning, and Geo Engineering (CIVPLAN) > Civil Engineering > 22201-(S1) Undergraduate Thesis
Depositing User:	Nanda Septa Agatha Putri
Date Deposited:	28 Jul 2024 13:53
Last Modified:	28 Jul 2024 13:53
URI:	http://repository.its.ac.id/id/eprint/109130

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