STUDY OF INCREASING ORGANIC COMPOUNDS REMOVAL AND DECOLORIZATION EFFICIENCY OF TEXTILE WASTEWATER IN TREATMENT PLANT WITH ACTIVATED SLUDGE SYSTEM

• Main Author: Latifa Ristiaramdani, Nur
• Format: Final Project
• Language: Indonesia
• Subjects: Teknik saniter dan perkotaan; teknik perlindungan lingkungan
• Online Access: https://digilib.itb.ac.id/gdl/view/70676
• Institution: Institut Teknologi Bandung

Massive textile production generates wastewater with specific characteristics, including organic compounds, odors, various pH and temperature, as well as dyes that are difficult to degrade. PT. X has COD concentration of 1,200 – 2,000 mg/L and color of 2000 Pt-Co, while the WWTP efficiency is 60-70%. Activated sludge was chosen because it is simple, economical, and the sludge is less hazardous than chemical-physical treatment. Moving Bed Biofilm Reactor (MBBR) as modification of activated sludge can save land, HRT, and CAPEX with same efficiency. Advanced Oxidation Process (AOP) using ozone is a tertiary treatment that could remove color, COD, and improve wastewater biodegradability. This study aims to identify efforts to increase the efficiency of textile wastewater treatment using activated sludge, MBBR with Kaldness K1 media, and the use of AOP ozone as pretreatment or post-treatment. Variations used were dye concentration (10; 50 mg/L), usage of Kaldness K1 (+K; -K), and AOP detention time (30; 60; 90 minutes). At 50 mg/L dye concentration, the efficiency of COD and color removal using MBBR (80.17% and 28.16%) was higher than activated sludge (78.18% and 25.5%) and the efficiency of AOP as post-treatment (97.01% and 51.22%) was higher than pretreatment (88.91% and 27.91%). The optimum variation was the usage of MBBR and AOP post-treatment for 90 minutes (97.16% and 59.16%).