Performance of four constructed wetlands treating anaerobic swine lagoon effluents
January 1, 1992
Effluents from both cells of a two-cell anaerobic lagoon system beating flushed swine waste were loaded into two types of constructed wetlands [submerged flow (SF) and free water surface (FWS)]. The...
Effects of swine lagoon effluent application on chemical properties of a loamy sand
January 1, 1992By F. Liu
In order to determine the effects of lagoon effluent application on soil chemical properties, swine lagoon effluent was applied to land with a 10% slope by an overland flow irrigation system on...
Effect of swine lagoon water application rate and alfalfa harvest frequency on dry matter production and N harvest
January 1, 1992
Swine (Sus scrofa domesticus) lagoon water can supply valuable fertilizer nutrients for field crops. Reduced land availability and increased swine operation size can potentially create situations...
Field odor measurement and applications of Gaussian plume model
January 1, 1992
Field measurements of odour intensity around a slurry tank and 200-sow swine unit were conducted. Odour intensity from 0 to 3 were defined as none, detectable, strong, and very strong, respectively....
Odor control in liquid hog manure by added amendments and aeration
January 1, 1992
A reduction in the emission of malodorous gases from liquid hog manure (LHM) would represent an advantage for LHM use in agricultural systems. Procedures for the reduction of disagreeable odors...
Using riparian buffers to treat animal waste
January 1, 1991By R. K. Hubbard
None available.
Spring runoff and drainage N and P losses from hog-manured corn
January 1, 1991By G. Gangbazo
A two-year study was conducted to assess the effect of hog manure on the losses of nitrogen and phosphorus in runoff and drainage from grain-corn (Zea mays L.) plots, and the importance of spring...
Treatment of pig slurry using the pump-stirred aerator
January 1, 1991By D. W. Williams
An experimental aeration system, called a pump-stirred aerator (PSA) was tested. The PSA consisted of an 11 kw centrifugal pump circulating liquid to and from a 10 msuperscript 3 tank and injecting...
Phosphorus movement through a coastal plain soil after a decade of intensive swine manure application
January 1, 1991By J. M. Novak
Understanding the movement of phosphorus (P) in soils receiving heavy animal waste application is important for nonpoint-source pollution control. We investigated both P accumulation in soil and...
Treatment of liquid swine manure in the sequencing batch reactor under aerobic and anoxic conditions
January 1, 1991By L. Fernandes
Laboratory studies were conducted on a sequencing batch reactor (SBR) for the treatment of screened liquid pig manure. The SBR was operated on the basis of a 24 h cycle at 6 and 90 days hydraulic...
Methods for evaluating odor from swine manure
January 1, 1991
Two odor evaluation methods were tested during a 12-week dynamic experiment on the effects of a commercial additive on swine manure in anaerobic storage. One method was a rating method which combined...
Farrowing building air quality survey
January 1, 1991
Two hundred farrowing houses were surveyed to measure ammonia, relative humidity, total dust and temp. to determine the adequacy of pig housing ventilation. Research was carried out to determine the...
