Salt Removal Efficiencies on Land Disposal of Swine Waste

by Harold E. Grier, Assoc. Prof. of Animal Sci.; Alcorn State Univ., Lorman, Miss.,
Suresh C. Tiwari, Prof. of Agricultural Sci.; Alcorn State Univ., Lorman, Miss.,
Gian C. Gupta, Consultant Research Soil Chemist; Div. of Agricultural and Applied Sci., Alcorn State Univ., Lorman, Miss.,

Serial Information: Journal of the Environmental Engineering Division, 1977, Vol. 103, Issue 4, Pg. 551-556

Document Type: Journal Paper


Swine waste aerobic lagoon effluent was sprinkled overland and the runoff water was collected. Both the waste effluent and the runoff water were analyzed for nitrate, ammonia, chloride, suspended solids, BOD, and specific conductance. Removal efficiency of nitrate dropped from 62% to 32%, on prolonged disposal of swine waste effluent, in 6 months. Data for suspended solids and specific conductance support these results for nitrate removal efficiency. Removal efficiencies for ammonia and chloride were higher and showed a very small decrease with time. BOD removal efficiency was 95% throughout the 6-month period of the study. The system showed signs of overloading for nitrate removal but not for BOD removal.

Subject Headings: Nitrates | Effluents | Salts | Livestock | Waste disposal | Runoff | Ammonia | Chloride

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