Patent ID: 7972517
Filing Date: 2011-07-05
Classification: B01D,B30B,C02F,Y10S

Abstract:
1. A method for treating a liquid containing waste manure, the method comprising: a. providing a treatment apparatus comprising at least a first vessel, and a filtration system in liquid communication with the first vessel, the filtration system comprising a first active filter including a first housing, a first displaceable filter medium, and a first displacement actuator disposed between the first housing and the first displaceable filter medium; b. delivering a portion of the liquid containing waste manure to the first vessel; c. adding a first reagent to the portion of liquid containing waste manure to cause the formation of waste manure flocs of a first size; d. adding a second reagent to the portion of liquid containing waste manure to cause growth of the waste manure flocs of the first size into separable waste manure flocs; e. separating the portion of liquid containing separable waste manure flocs within the filtration system into a waste manure sludge and a first filtrate; and f. dewatering the waste manure sludge by actuating said first displacement actuator to displace said first displaceable filter medium and producing a dewatered waste manure solid cake and a second filtrate wherein at least 85 weight percent of the organic nitrogen and at least about 97.5 weight percent of the phosphates and at least 94 weight percent of the total manure solids that were present in the portion of the liquid containing waste manure delivered to the first vessel is contained in the dewatered waste manure solid cake.