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http://dx.doi.org/10.5668/JEHS.2014.40.2.127

Removal of High Odor Concentration with Biofilter using Mixture of Earthworm Cast and Distillery Sludge  

Park, Jong-Woong (Department of Safety & Environmental Prevention, Daegu Hanny University)
Jang, Seg-Joo (Environmental System Development Institute, Daegu Hanny University)
Publication Information
Journal of Environmental Health Sciences / v.40, no.2, 2014 , pp. 127-136 More about this Journal
Abstract
Objectives: This study was conducted to investigate the removal of high odor concentration from swine wastewater treatment facility by full scale biofilter using liquid with deodorant mixed with earthworm cast and distillery sludge. Methods: The supply of the culture liquid to the microorganism on the media in the biofilter increases the activity and growth of biomass. The experimental equipment was biofilter tower with treatment capacity of 90 m 3/min. The experimental conditions included gas flow of $60m^3/min$, retention time of 20 sec, and gas/liquid ratio of 67. Results: With changing season from winter to summer, the inlet odor concentration of ammonia increased from 2.5 ppm to 29 ppm, and of hydrogen sulfide from 21 ppm to 91 ppm, respectively. The odor treatment system with biofilter using the culture liquid was stable when the high loading rate increased and showed excellent removal grade with an average of 96.7% for ammonia, and an average of 93.7% for hydrogen sulfide. The pH and SCOD in the recirculating culture liquid near the bottom of the biofilter tower decreased with operation time, but its influence on the odor removal rate was negligible, because the organic matter (SCOD) was replaced by some culture liquid supplied 2-4 times per day. Conclusions: The biofilter using culture liquid could successfully remove high odor concentration which was generated from swine wastewater treatment facility.
Keywords
Biofilter; Culture liquid; Distillery sludge; Earthworm cast; Odor removal;
Citations & Related Records
Times Cited By KSCI : 4  (Citation Analysis)
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