Influence of environmental factors on concentrations and inorganic content of aerial dust in swine finishing buildings
January 1, 1985
The total mass concn. of aerial dust particles in 11 pig finishing units averaged 8.1 mg/msuperscript 3 during a 9-month survey and exceeded the 15 mg/msuperscript 3 US Occupational Safety and Health...
Air quality in a swine nursery
January 1, 1985
The effects of ventilation rate on air quality were investigated in 2 experiments, one with reduced ventilation and one with a cold air draught. Carbon dioxide, ammonia, hydrogen sulphide,...
Field estimates of ammonia volatilization from swine manure by a simple micrometeorological technique
January 1, 1985
An existing numerical model for particle diffusion into air from ground-based sources was recalculated for circular source plots of 7 m diameter. Results showed that a satisfactory relationship...
Air quality in farrowing barns
January 1, 1984
Concentrations and production rates of major ambient contaminants (moisture, dust particles, carbon dioxide, ammonia and hydrogen sulphide), were established in 5 farrowing rooms. Comparison between...
Swine lagoon effluent applied to hardwood seedlings
January 1, 1983By R. O. Hegg
This report is a summary of a project to apply swine lagoon effluent onto three hardwood species (yellow-poplar, green ash, and eastern cottonwood) at five application rates (0, 20, 47, 74, and 144 cm/yr).
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.
