SALINITY EFFECT ON FECAL SLUDGE TREATMENT USING BLACK SOLDIER FLY LARVAE (BSFL)

• Main Author: Salwa Nadira, Lintang
• Format: Final Project
• Language: Indonesia
• Subjects: Teknik saniter dan perkotaan; teknik perlindungan lingkungan
• Online Access: https://digilib.itb.ac.id/gdl/view/84412
• Institution: Institut Teknologi Bandung

Indonesia is an archipelago with a diversity of land and coastal areas. Distant condition, number of IPLT unit and commonly far from coastal area makes other alternative treatment methods to treat fecal sludge is needed, example with Black Soldier Fly Larvae (BSFL). However, the brackish nature of the water makes research is needed on the effect of salinity on treatment with this technology. This study used a mixed substrate of fecal sludge with sawdust conditioned at salinity variations of <0.5%, 1%, 2%, 3%, and 4%. The fecal sludge used was from Bandung City to facilitate variation and Kampung Beting, Muara Gembong, Bekasi as a representative of the coastal area. The experiment was conducted for 15 days of observation with 7-day-old larvae. Measurements and tests showed that larval weight gain, Survival Rate (SR), Waste Reduction Index (WRI), and Bioconversion Rate (BCR) decreased as salinity increased with the highest at <0.5% salinity (3.76 mg/larvae/day, 97.7%, 2.46%, 3.76%) and the lowest at 4% salinity (0.89 mg/larvae/day, 94.5%, 0.6%, 0.9%). In the residue formed, it is known that there was a decrease in moisture content of 26.81%, a decrease in Total Organic Carbon (TOC) levels by an average of 4.71% and a decrease in Total Phosphate (TP) and Total Nitrogen (TN) levels in the first half by 43.65% and 5.44% then an increase in the second half by 120.75% and 27.4%.