Common use of Solids Separation Clause in Contracts

Solids Separation. In the dairy industry, liquid-solids separation may be used to remove solids from run-off collected from drylots and flushed manure from freestall barns and milking centers. The liquid from solids separation is sent to a storage pond or anaerobic lagoon; the solid is stored in piles. Solids separation is necessary to reduce the organic loading to storage ponds and lagoons so they do not overflow. Mechanical separators (stationary screens, vibrating screens, presses, or centrifuges) or gravity settling basins may be used for this purpose. Emissions from separation activities are dependent on how frequently solids are removed. If solids remain in settling basins and mechanical separation systems longer, emissions of NH3, H2S, VOCs and CH4 may be significant. Generally, the retention time of separation activities is short (i.e., less than one day).