EDİP AVŞAR, Özgür UYAR, Kadir ALP, ASUDE HANEDAR

Hayvan Yetiştiriciliğinden Kaynaklanan Kokulu Gazların Arıtımında Biyofiltrelerin Etkinliklerinin İncelenmesi

Çalışmada hayvan çiftliklerinden kaynaklanan ve amonyak içeren kokulu atık gazların biyofiltrelerle arıtılması araştırılmıştır. Biyofiltreler, düşük enerji gereksinimleri ve ilk kurulum maliyetinin düşüklüğü nedeniyle koku kontrolünde tercih edilmektedir. Bu nedenle, çalışmada hayvan barınaklarının aralıklı havalandırma uygulamasının simüle edilmesi için kesikli düzenle kurulan laboratuvar ölçekli reaktörler kullanılmıştır. Seri bağlı iki adet reaktöre kirletici olarak, konsantre amonyum hidroksit çözeltisinden hava geçirmek suretiyle ile sıyrılarak elde edilen amonyak/hava karışımları beslenmiştir. Filtrelerde dolgu maddesi olarak evsel katı atıktan üretilmiş kompost ve odun talaşı karışımı kullanılmıştır. Farklı yükleme oranlarına karşılık amonyağın biyofiltrelerde aerobik-biyolojik olarak oksidasyon verimi ve bu verimi etkileyen faktörler incelenmiştir. Aklimasyon dönemi dahil 130 günlük süre içinde 1,32-27 g NH3/m3.saat aralığında 8 farklı değerde yükleme yapılmış, ortalama amonyak giderim verimi % 97,2±1,8 olarak bulunmuştur.

Investigation of the Treatment Efficiency of Biofilters In Terms of Odorous Gases Originated from Animal Breeding

In the study, treatment of odorous waste gases emited from the cattle and sheep breeding facilities and poultry farms which containing ammonia were investigated by means of biofilters. Biofilters are preferred for odor control due to their low energy requirement and capital cost. For this purpose, bench scale batch reactors, were used to simulate the intermittent ventilation of animal barns. Ammonia/air mixtures used as pollution source were obtained by stripping the concentrated ammonium hydroxide via air and fed to two serially connected biofilter modules. Compost produced from domestic solid waste and sawdust mixture was used as a packing material in the filters. Factors affecting aerobic-biologic oxidation of ammonia in biofilters were investigated for different loading rates. During the 130 days which including the acclimation period, 8 different loads were loaded in the range of 1.32-27 g NH3/m3.h and the average ammonia removal rate was found as 97.2% ± 1.8.

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