Liquid Manure Storage and Treatment
What types of liquid manure treatment exist?
There are three methods for treating liquid manure. Physical treatment of manure includes the separation of solids from liquids and other alterations of the manure’s consistency. Chemical treatment reduces odor and disinfects it. Biological treatment is used to stabilize manure and create useful products like biogas.
What are the design considerations when choosing a liquid manure storage system?
The size of the liquid manure storage system is determined based on the volume of manure to be stored which is animal specific (number, type, length of confinement, bedding) as well as the length of storage time needed and maximum height of the stacks.
A suitable location for the manure storage container is flat, with impermeable soils, and removed from streams and flood plains. Typically, a liquid storage container is constructed either above ground or in-ground.
What are the environmental considerations of liquid manure?
Accidental spills or mismanagement of liquid manure can lead to contamination of local waterways contributing to nutrient-related pollution. Liquid manure also emits gases associated with ground level ozone, greenhouse gases, and nuisance odors.
What is the Manure Hauler Certification Program?
Under act 49 all persons who commercially haul, spread, or broker manure in Pennsylvania must obtain an appropriate level of certification to insure that manure is transported and applied in a safe manner. Training and certification tests are administered at the Pennsylvania Department of Agriculture.