The Effect of Aeration on Aerobic Biofilter Using Polyethylene Terephthalate Media for Chicken Slaughterhouse Liquid Waste

Chicken Slaughterhouse is one of the industries that process live chickens into ready-to-eat chicken meat products. Many chicken slaughterhouses still need liquid waste treatment technology and directly discharge it into the aquatic environment. RPA liquid waste has a high organic content that will cause environmental pollution with unpleasant odors and decay. This study uses an aerobic wastewater treatment method by utilizing aerobic microorganisms in wastewater that are attached to biofilter media to form biofilms. This study aims to reduce the concentration of COD, BOD, TSS, and ammonia and change the pH value of RPA liquid waste with aerobic biofilter treatment using honeycomb media from Polyethylene Terephthalate and to get the best aeration flow rate to reduce the concentration of pollutants from the aerobic biofilter reactor. In this study, the residence time and the addition of air discharge in the aeration process are varied. The results of this study show that there has been a decrease in the concentration of COD, BOD, TSS, and ammonia and changes in pH values following PERMENLHK No 5 of 2014 concerning the quality standards of slaughterhouse wastewater with the best aeration flowrate recommendation is 15 liters/minute

Optimalisasi Konsumsi Energi Pada Proses Pemurnian Di Pabrik Gula Dengan Menggunakan Teknologi Mvr Pada Steam Evaporator

Industri gula memegang peranan penting dalam industri ekonomi pangan. Gula sebagai komoditas pertanian Indonesia merupakan salah satu kebutuhan pokok yang penting bagi masyarakat Indonesia. Pada pabrik gula paling sering digunakan quintuple effect evaporator yang mendapatkan supply pemanas dari uap bekas ketel. Sistem evaporator jenis ini dipilih karena memiliki kelebihan yaitu dalam hal penghematan energi dengan adanya pemanfaatan uap dari badan terakhir ke unit lain. Pada proyek akhir ini bertujuan untuk mengefisiensi penggunaan steam evaporator badan terakhir dengan menggunakan teknologi Mechanical Vapor Recompression (MVR) agar dapat dimanfaatkan ke unit unit pemurnian.Prinsip kerja Mechanical Vapor Recompression (MVR) yaitu rekompresi uap mekanis menggunakan sistem pompa panas, di mana tekanan dan suhu uap yang dihasilkan akan lebih tinggi. Penggunaan teknologi MVR ini memberikan penghematan uap bekas sebesar 20,55% dengan memanfaatkan 95,05% steam yang telah dikompresi. Dari modifikasi tersebut menghasilkan pendapatan bersih sebesar Rp 183.251.070.758, di mana modal awal proyek ini dapat kembali dalam waktu 2,1 bulan. ================================================================================================================================ The sugar industry plays an important role in the food economy industry. Sugar as an Indonesian agricultural commodity is one of the most important basic needs for Indonesian people. In sugar factories, the quintuple effect evaporator is most often used, which gets its heating supply from steam from the boiler. This type of evaporator system was chosen because it has advantages, namely in terms of saving energy by utilizing steam from the last body to another unit. In this study the aim is to efficiently use the last body steam evaporator by using Mechanical Vapor Recompression (MVR) technology so that it can be used for purification units. The working principle of Mechanical Vapor Recompression(MVR) is mechanical vapor recompression using a heat pump system, at which pressure and temperature the steam produced will be higher. The use of this MVR technology provides savings of 20.55% spent steam by utilizing 95.05% of compressed steam. The modification resulted in a net income of IDR 183,251,070,758, where the initial investment for this project could be returned within 2.1 months