Removal Efficiency of Water Pollutants and Malodor of Pig Slurry using Biofiltration System
2009
Choi, D.Y., National Institute of Animal Science, RDA, Suwon, Republic of Korea | Kwag, J.H., National Institute of Animal Science, RDA, Suwon, Republic of Korea | Jeong, K.H., National Institute of Animal Science, RDA, Suwon, Republic of Korea | Park, K.H., National Institute of Animal Science, RDA, Suwon, Republic of Korea | Huh, M.Y., National Institute of Animal Science, RDA, Suwon, Republic of Korea | Kim, J.H., National Institute of Animal Science, RDA, Suwon, Republic of Korea | Kang, H.S., National Institute of Animal Science, RDA, Suwon, Republic of Korea | Jeon, K.H., National Institute of Animal Science, RDA, Suwon, Republic of Korea | Park, C.H., The Foundation of Agri. Tech. Commercialization and Transfer, Suwon, Republic of Korea | Jeong, J.W., The Foundation of Agri. Tech. Commercialization and Transfer, Suwon, Republic of Korea
The pig slurry is one of important fertilizer source for production of crops in recent years, but it has many controversial points of utilization such as offensive odor, lack of spread equipment and farmland possession, respectively. This study was carried out in order to remove water pollutants and malodor of pig slurry using biofiltration system. The biofiltration system consists of pig slurry separator, mixing shift and attached blade for sawdust or ricehull, air injection nozzle and outlet for pig slurry and sawdust or ricehull. The characteristics pH, BOD∧5 (Biochemical Oxygen Demand), COD∧MN (Chemical Oxygen Demand), SS (Suspended Solid), T-N (Total Nitrogen), T-P (Total Phosphorus) of the untreated pig slurry used in this study were 7.2, 34,450, 24,604, 71,000, 4,194, 1,631 ml/ℓ, respectively. The NH₃(Ammonia) and H₂S (Hydrogen Sulfide) concentration were 70.0, 9.6 ppm, respectively. The initial total microorganisms of pig slurry were 5.0×10³ cfu/ml, and Salmonella, Bacillus were 5.8×10², 1.1×10³ cfu/ml, respectively. The filtration system was very effective on removal of water pollutants of pig slurry. The removal efficiency of the offensive odor of ammonia and hydrogen sulfide in sawdust was higher than those of ricehull. The total microorganisms and bacillus of pig slurry are on the increase by sawdust and ricehull, but Salmonella showed a tendency to decrease in number after that time. Accordingly, the filtration system was very effective to produce a good quality pig slurry.
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