Phosphorus removal from swine manure supernatant: precipitant efficiency
January 1, 1983
This study proposes an emergency remedial measure aimed at reducing the eutrophic load of the supernatant of pig manure when discharge in the aquatic environment is unavoidable. Phosphate removal...
Anaerobic filter loading for liquid swine waste [Odor reduction, on the farm waste management system]
January 1, 1983
Anaerobic filters were tested to quantify design and process variables necessary to design an anaerobic filter for treating liquid swine waste. The anaerobic filter operates at 9 hours hydraulic...
Fertilizer value and nitrogen losses of swine and dairy manure from an above-ground storage system
January 1, 1982By D. L. Welty
None available.
Nitrogen losses from swine housings
January 1, 1982
A nitrogen budget procedure was used to estimate the loss of manure N from three swine barns with liquid manure systems. The loss of N was determined as the difference between animal plus feed N...
Environment - Manure Storage / Application
Pollution control of swine manure and straw by conversion to Chaetomium cellulolyticum SCP single-cell protein feed
January 1, 1981By M. Moo-Young
Swine manure has a very high pollution potential and obnoxious odor. Large farms particularly are confronted with a manure disposal problem since environmentally acceptable solutions are now required...
Changes in Gas Release Rates and Component Concentrations During Storage of Swine Manure
January 1, 1980By K. A. Janni
None available.
Odor and water related nuisances from swine facilities in Ohio
January 1, 1980
Descriptions of 5 pig farms giving rise to complaints of odours and water pollution are given. Legal action and the fines levied are discussed. Methods of solving nuisance problems are noted, and design and management criteria for avoiding them are suggested.
Ammonia losses during sprinkler application of animal wastes
January 1, 1980
A model for predicting ammonia losses during sprinkler application of animal wastes was developed. These losses are important because of the cost of nitrogen as a fertilizer and because it is a...
Odor reduction of swine manure by aeration stripping
January 1, 1980By D. Phillips|N. R. Bulley
A dynamic dilution-to-threshold odour measurement method was used to evaluate changes in odour level downwind from an on-farm anaerobic liquid swine manure tank during short-term aeration. Air...
Odor control in liquid swine and dairy manure with commercial products
January 1, 1980By Robert P. Eastburn|William F. Ritter
In 5 experiments, single or regular addition of liquid polyphosphates (N 10%, P2O5 34%) at up to 4 ml/l to liquid dairy cattle or pig manure (TS 5-7%) did not reduce odour, COD or pH. Single or...
Soil carbon, nitrogen and phosphorus contents in maize plots after 14 years of pig slurry applications
January 1, 1979
Excessive applications of liquid pig manure (LPM) could result in nutrient accumulation in the soil, thereby increasing the potential for plant nutrient losses through movement in groundwater. The...
