Swine production facilities are becoming larger in size and are concentrated in smaller geographical areas. Additionally, there is an increasing trend to base manure land application rates on crop phosphorous requirements rather than crop nitrogen requirements alone. These factors have resulted in a need to find a feasible method for removing available phosphorous from swine waste prior to land application. Concentrating and transporting excess phosphorous to phosphorous deficient cropping areas may be economically viable. Forced precipitation of struvite (MgNH4PO4 6H2O) is on option for phosphorous concentration removal. Using raw swine manure, testing has demonstrated that up to 92% of the reactive phosphorous (PO4 3-) can be removed by the addition of MG2+ to the waste in the form of MGO and by heating to 35 degrees C to force the formation of struvite. Up to 98% of the reactive phosphorous can be removed by using the same procedure with anaerobically digested swine manure.