Charge pull-plug systems with enough water to completely submerge incoming manure. Mismanaged flush systems usually fall victim to low volumes of water being released or infrequent flushing. Overflow protection and unrestricted transfer piping are prime considerations in lowering risks of spills and incomplete removal. Automated mechanical scraper systems require more management and maintenance but are an attractive option where water supplies are limited and low volumes of manure are produced. Separation options - This component is receiving more attention as we attempt to minimize odor release and deal with large volumes of manure on limited land bases.
Separation typically falls into three categories.
1.Passive settling to separate manure solids from liquid is driven by gravity over a time. These systems fit well into existing operations that could benefit from reduced solids loading in the long-term containment system. A formed tank or shallow basin can collect passively settled solids, which are further processed or land applied. This option is favorable from a maintenance and capital investment perspective. Mechanical separation, which requires more management, may include a screen method, exerted pressure or centrifuge action to separate manure liquids from solids.