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The color of naphtol blue black (NBB) is widely used in fabric dyeing in the household industry. The activity produces a lot of wastewater containing dyes that pollute the waters. The development of horizontal biosystem by adding a consortium of microorganisms to improve the performance of biosystem is an alternative handling of liquid waste. This study aims to determine the best active suspension to be used in treating NBB waste, the ability of horizontal biosystem in decreasing the concentration of NBB. The horizontal biosystem is conctructed of a 0.01 m 3 tub containing Typha angsutifolia plant enriched with the best active suspension. The best active suspension source was the sludge collected from Batanta. The growth potential of the resulting microbial consortium achieved a biomass growth value (MLVSS) of 2386.7 mg / L. The results show that the horizontal biosystem is effective in reducing the concentration of NBB is 79.82%. The Capacity of the in reducing the concentration of NBB is 41,647 mg / L / m 3 hour. This study concludes that the horizontal biosystem is able to reduce the concentration of NBB in the dye waste.

BIODEGRADASI ZAT WARNA NAPHTOL BLUE BLACK MENGGUNAKAN BIOSISTEM HORIZONTAL