标题：AMMONIA REMOVAL BY BIOFILTER TECHNIQUE PACKED WITH CORAL AND GRANULATED ACTIVATED CARBON (GAC) INOCULATED WITH ENRICHED NITRIFYING BACTERIA
其他标题：PENGHILANGAN BAU AMONIA MENGGUNAKAN TEKNIK BIOFILTER DENGAN BAHAN PENGISI KORAL DAN ARANG AKTIF YANG DIINOKULASI DENGAN BAKTERI PENGOKSIDASI AMONIA
摘要：Ammonia removal occured by biofiltration technique where nitrifying bacteria naturally immobilized on packing material to oxidize ammonium to nitrate.The objective of this study was to compare packing material of coral and granular activated carbon (GAC) on biofilters as supporting material to nitrifying bacterial growth at laboratory scale.The night soil sludge was enriched by addition of ammonium sulphate to foster the nitrifying bacteria and the enriched nitrifying bacteria was inoculated to biofilters.Ammonia gas was introduced to biofilters by gradually increasing from 3-62 ppm and ammonia load from 0.02-1.97 g-N/kg-dry-material/day for 24 days.The average of ammonia removal efficiency were 81% for coral biofilter and 85% for GAC biofilter.During operation,both of biofilters were increased in pH and population of autotrophic nitrifying bacteria,however decrease in water content and population of heterotrophic bacteria.The maximum of ammonia removal capacity were 0.53g-N/kg-dry- coral/day and 0.66 g-N/kg-dry GAC/day.Performance of GAC biofilter was better than coral biofilter.
其他摘要：Penghilangan bau amonia dapat dilakukan dengan teknik biofilter di mana mikroorganisme aktif terimobilisasi secara alami dalam bahan pengisinya untuk mengoksidasikan amonia menjadi nitrat.Penelitian ini bertujuan untuk membandingkan bahan pengisi batu kor
