#TITLE_ALTERNATIVE#

• Main Author: ANANTHI (NIM 25306034); Pembimbing : Prof. Dr. Ir. Wisjnuprapto, Dipl.SE dan Dr. I. G. Wente, NARAINA
• Format: Theses
• Language: Indonesia
• Online Access: https://digilib.itb.ac.id/gdl/view/16658
• Institution: Institut Teknologi Bandung

The Azo dye is the main problem of the waste produced by the textile industries, it is very dangerous to living entities due to its toxicity and mutagenic properties, and very difficult to decompose due to, it possess a very specific molecular structure of nitrogen double chain (N=N). In order to removal the properties (colour) of the azo dye waste when disposing to the water environment, this research developed a new concept using a Biology Treatment Process combined with a Contact Stabilization and Membrane System called as a "Bioreactor Membrane Contact Stabilization" abbreviated as BMCS. The objective of this research work is to analyse and discuss the influence on the variation of the Hydrolysis Retention Time (HRT) in the anoxic tank towards the efficiency of removal of the colour of the Remazol Black V dye and the efficiency of removal of the Total Organic Carbon (TOC). The BMCS consist of anoxic tank, contact tank and stabilization tank where the Ultra filtration Membrane Unit was connected externally. The anoxic tank operated under the condition of anoxic while the contact tank and the stabilization tank operated under the condition of aerobic. The Membrane Ultra filtration unit operated at 0,1 bar. The HRT that was verified in the anoxic tank is at 1/2, 1, 1 1/2, 2, 2 1/2 , 3, and 3 1/2 hours. Contact tank is at 2 hours and for Stabilization tank is at 4 hours and the mud was kept in the system for 10 days. The Azo dye used in this research work is Remazol Black V with concentration 150 mg/L. The result of the work reveals the following : 1) The removal of the colour towards the variation of the HRT in the Anoxic tank at 1/2, 1, 1 1/2, 2 , 2 1/2, 3 and 3 1/2 hours is 64%, 74%, 77%, 81%, 85%, 86% and 76% . 2) The removal of the TOC towards the variation of HRT in the anoxic tank at 1/2, 1, 1 1/2, 2, 2 1/2, 3 and 3 1/2 hours is 84%, 88%, 94%, 96%, 96%, 98% and 86% . 3) The elimination of the COD towards the variation of HRT in the anoxic tank at 1/2, 1, 1 1/2, 2, 2 1/2,3, and 3 1/2 hours is 95%, 95%, 96%, 97%, 97%, 97% and 85%. 4) The elimination of the BOD towards the variation of HRT in the anoxic tank at 1/2, 1, 1 1/2, 2, 2 1/2, 3 and 3 1/2 hours is 95%, 95%, 96%, 97%, 97%, 97% and 85% . Based on the result of this research work it can be concluded when the HRT is at 3 hours in the anoxic tank , the highest colour removal is 86% , the highest removal of TOC is 98%, the highest removal of COD is 97 % and the highest removal of BOD is 97%.