Ecology, Environment and Conservation Paper

Vol 25, July Suppl. Issue, 2019; Page No.(S80-S84)

SUITABLE MODIFICATION OF BENTONITE AS MEDIA INANAEROBIC DIGESTION FOR TREATED WASTEWATER WITH HIGHAMMONIA CONCENTRATION

Siti Mariya Ulfa, Ivana Saumi Safitri, Eko Prasetyo Kuncoro and NurIndradewi Oktavitri

Abstract

Anaerobic digestion is favorable process for high ammonia nitrogen wastewater. Additionally Bentonite as media potency eliminate toxic material in wastewater. Bentonite was applied in two conditions with and without chemical activation, however thermal activation was added before chemical activation for both conditions. Dairy milk simulated wastewater was anaerobically treated in 1 L of volume in lab scale.This research using 4 types of reactors, i.e. reactor without bentonite; reactor with bentonite was activated with acid; reactor with bentonite was activated by alkaline and reactor was added with bentonite without activation. H3PO4 was used to activated bentonite in alkalinity condition and KOH was used for alkalineactivation. Better performance for TAN removal was reactor added with bentonite without chemical activation. It reached optimum condition in 40% and stable around 40-47% in 15 d observation time. All reactor showed similar performance in COD removal around 45-60%. However, reactor without activation bentonite has good performance in COD removal until 60%. Bio gas production in reactor with Bentonite without chemical activation also showed highest bio gas production.

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