Analisis Pengaruh Laju Aliran Influen terhadap Konsentrasi Bakteri Efluen pada Reaktor Biogas Upflow Anaerobic Sludge Blanket (UASB)

Santoso, Surya Alam (2017) Analisis Pengaruh Laju Aliran Influen terhadap Konsentrasi Bakteri Efluen pada Reaktor Biogas Upflow Anaerobic Sludge Blanket (UASB). Undergraduate thesis, Institut Teknologi Sepuluh Nopember.

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Abstract

Limbah organik berupa zat cair merupakan limbah yang tidak dapat dihindarkan dari sisa produksi industri pangan. Menurut PP no 82 tahun 2001 pasal 8 tentang Pengelolaan Lingkungan Hidup, terdapat beberapa parameter yang digunakan untuk menentukan kualitas air, di antaranya COD (Chemical Oxygen Demand). Kandungan COD yang tinggi pada limbah organik cair dapat mengganggu ekosistem perairan dan merusak atmosfir bumi. Untuk itu kandungan COD dapat dikurangi dengan reaktor UASB yang menghasilkan biogas. Namun terdapat masalah dalam penggunaan reaktor UASB yaitu banyaknya bakteri dalam bentuk granul yang terbuang bersama dengan efluen. Pada tugas akhir ini dilakukan studi pengaruh laju aliran influen terhadap kandungan biomassa yang terbuang untuk menentukan laju aliran yang tepat. Untuk melakukan studi, dilakukan estimasi parameter kinetika Monod untuk biomassa yang terdapat pada reaktor pemodelan reaktor UASB sebagai CSTR bertingkat, dan pemodelan reaktor UASB distributif menurut ketinggian reaktor. Laju aliran influen yang baik untuk reaktor UASB PT. GGF diperoleh pada rentang berkisar 150 hingga 175 m3/h, di mana tidak terlalu banyak konsentrasi bakteri yang terbuang (0,001393 s.d 0,4919 kg/m3), waktu mencapai steady state yang tidak terlalu lama (48.640 s.d. 60.800 hari), COD removal yang cukup baik, yaitu sebesar 57,81% s.d. 66, 57% saat pertama kali mencapai HRT dan 97,74% s.d. 97,98% saat mencapai steady state. =============================================================================================== Organic liquid waste is an inevitable waste of the food production from food industries. According to Government Regulation No. 82 year 2001 clause 8 on Environmental Management, there are several parameters used to determine water quality, including COD (Chemical Oxygen Demand). High COD content in liquid organic waste can disrupt aquatic ecosystems and damage the earth's atmosphere. For that COD content can be reduced by UASB reactor that produces biogas. However there was a problem in the use of UASB reactor that was the number of bacteria in the form of granules that are wasted along with the effluent during the process. In this final project, a study of the effect of the influent flow rate on the biomass consentration which is wasted was conducted to determine the optimal flow rate. To conduct the study, an estimation of the Monod parameters for biomass in the UASB reactor, modeling reactor as a multilevel CSTR, and UASB reactor modeling according to the reactor height were conducted. The suitable flow rate for UASB reactor in GGF Corp. was obtained in the range of 150 to 175 m3/ h, where there were less bacterial concentration in the effluent (0.001393 to 0.4919 kg / m3), the time to reach the steady state did not take too long compared with other variations (48.640 to 60,800 days), COD Removal was adequate for biogas production and microbial growth, that is equal to 57,81% to 66, 57% when first reached HRT and 97,74% to 97.98% when reaching steady state.

Item Type: Thesis (Undergraduate)
Uncontrolled Keywords: Biomassa, Chemical Oxygen Demand, Reaksi Anaerobik, Reaktor UASB
Subjects: Q Science > QC Physics
Q Science > QD Chemistry > QD502 Chemical kinetics
Q Science > QR Microbiology
T Technology > T Technology (General)
T Technology > TD Environmental technology. Sanitary engineering > TD646 Sewage--Purification
T Technology > TP Chemical technology
T Technology > TP Chemical technology > TP359 Biogas
Divisions: Faculty of Industrial Technology > Physics Engineering > (S1) Undergraduate Theses
Depositing User: Surya Alam
Date Deposited: 28 Nov 2017 02:56
Last Modified: 06 Mar 2019 06:43
URI: http://repository.its.ac.id/id/eprint/45421

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