DEGRADATION OF BIOWASTE IN SOLID FRACTION USING ANAEROB SEMI-CONTINUOUS REACTOR

• Main Author: FAJRINA (NIM 15306044); Pembimbing: Mochammad Chaerul, S.T., M.T., Ph.D., RISQIA
• Format: Final Project
• Language: Indonesia
• Online Access: https://digilib.itb.ac.id/gdl/view/14450
• Institution: Institut Teknologi Bandung

Biowaste or otherwise known as organic waste is an organic residue that can be easily decomposed. Increasing population density causes a municipal waste problem. The largest amount of biowaste in the city was found in traditional markets. Because of that, Mechanical Biological Treatment (MBT) technology becomes an alternative solution of biowaste treatment to reduce biowaste in the city. MBT is divided into two processes, which is the mechanical and biological process. The mechanical process is intended to separate organic waste from municipal solid waste and to minimize the size of the biowaste so that the proceeding biological process can be done without disturbance. In this lobartorium scale experiment, the biowaste is pre-treated by mixing it with adding tap water according to a ratio of 1:2 using the blender for 60 seconds. Slurry form of biowaste separated into solid and liquid fractions using screening. The solid fraction biowaste mixed with seeding is inserted into semi-continuous anaerobic reactor which has a working capacity of 4 and 3 liters each. The ratio of biowaste and seeding is 9:1. The parameters used to find the characteristics of the biowaste degradation process are pH, temperature, water content, volatile content, organic carbon, nitrogen total kjedahl, total phosphate, total volatile acid, and biogas composition. The retention time variance for the first running is 10 and 15 days. From the measured result, the most efficient organic carbon removal during the biowaste degradation process is in reactor with a retention time of 15 days which is as large as 82.93%, meanwhile the reactor with a retention time of 10 days only achieves 66.15%.