Abstract: The present description relates to press extractors for processing municipal solid waste or source separated organics, and can have large perforations for separation of a wet fraction from a liquid depleted fraction. The extractor can also be operated based on a target plug thickness of the liquid-depleted plug left over in the perforated chamber after compression. The extractors can facilitate good organics extraction yields, and lower operating pressures, among other benefits.

Abstract: A method for treating wastewater is disclosed. In step a), a predetermined volume of the wastewater is mixed in a first receptacle with a predetermined volume of sludge-containing returned denitrified mixed liquor under anaerobic conditions for a predetermined time period to produce an anaerobically mix rich in released phosphates. In step b), at least a portion of the anaerobically treated mix is then treated in a second receptacle under aerobic and anoxic conditions to produce a part-treated mix. In step c) at least a portion of solids from the part-treated mix to produce a low reduced-solids effluent. Steps b) and c) are sequential and cyclical and the treatment in step a) occurs during one or both of steps b) and c). In an alternative method, a predetermined volume of wastewater is treated under aerobic and anoxic conditions to produce a part-treated mix.