dairy wastewater treatment by anaerobic fixed bed reactors from laboratory to pilot-scale plant: a case study in costa rica operating at ambient temperature

نویسندگان

s. nikolaeva

laboratorio de materiales industriales (lami), universidad nacional de costa rica (una), heredia, costa rica e. sánchez

laboratorio de materiales industriales (lami), universidad nacional de costa rica (una), heredia, costa rica r. borja

instituto de la grasa (csic), avda. padre garcía tejero, 4, 41012-sevilla, spain

چکیده

the effect of hydraulic retention time in a range from 1.0-5.5 days was evaluated in a laboratoryscaleanaerobic fixed bed reactor packed with a hybrid material composed of tire rubber and zeolite. underthese conditions, cod removal efficiencies varied from 28.3% to 82.1%, respectively. over the more than 6months of operation, no clogging was observed. the results obtained demonstrated that this type of reactorwas capable of operating with dairy waste at a hydraulic retention time 5 times lower than that used in aconventional digester. based on the laboratory-scale experimental results obtained, a pilot-scale plant wasdesigned. the pilot plant was installed in “cot de oreamuno” near the city of cartago, costa rica.biogasproduced in the pilot-scale anaerobic plant was used for the generation of electricity on the farm. in this case, a cod removal efficiency of 63.6 % was achieved in the full-scale anaerobic plant at a hydraulic retention time of 3 days, this value being comparable with that obtained at laboratory-scale.

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dairy wastewater treatment by anaerobic fixed bed reactors from laboratory to pilot-scale plant: a case study in costa rica operating at ambient temperature

the effect of hydraulic retention time in a range from 1.0-5.5 days was evaluated in a laboratoryscaleanaerobic fixed bed reactor packed with a hybrid material composed of tire rubber and zeolite. underthese conditions, cod removal efficiencies varied from 28.3% to 82.1%, respectively. over the more than 6months of operation, no clogging was observed. the results obtained demonstrated that this...

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عنوان ژورنال:
international journal of environmental research

جلد ۷، شماره ۳، صفحات ۷۵۹-۷۶۶

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