Assessing The Effectiveness of Adding Eco Enzyme in Biofilterto Reducing Mbas of Laundry Wastewater

Abstract

Laundry businesses are growing rapidly in Palu City, the increasing number of laundry businesses is increasing the use of detergents containing Methylene Blue Active Surfactants (MBAS). High levels of surfactant in wastewater can trigger a decrease in dissolved oxygen levels, thereby disrupting the aquatic ecosystem. This study aims to determine the effectiveness of a biofilter with the addition of 10% eco enzyme in reducing MBAS in laundry wastewater. This research was an experimental study, with a laboratory test approach. Wastewater samples were taken compositely in the morning, afternoon and evening, and analysis of the samples was carried out before and after processing using an anaerobic-aerobic biofilter using bio ball media. The addition of 10% eco enzyme was carried out in the seeding process to accelerate the formation of biofilm on the bio ball media. The results of the laboratory analysis were calculated using the effectiveness formula. Laboratory test results indicate that the addition of 10% eco-enzyme in biofilter is very effective in reducing MBAS of laundry wastewater up to 89.53 - 100%. Organoleptic tests show that a biofilter can reduce the cloudy color of wastewater to become clear and removes unwanted odors with temperature and pH values suitable to wastewater quality standards. Anaerobic-aerobic biofilters with the addition of 10% ecoenzyme can be an alternative for wastewater treatment in laundry businesses.

Keywords: Aerobic; Anaerobic; Biofilter; Eco enzyme; Wastewater