Digester for high solids waste

A digester comprising:

• a leachate bay reactor, wherein the leachate bay reactor is a transport container for waste;
• a leachate storage tank fluidically connected to the leachate bay reactor to recirculate leachate through the leachate bay reactor;
• and
• a high rate methanogenic reactor fluidically connected to the leachate storage tank to cycle the leachate in a high rate methanogenic reactor for biogas production, wherein, each of the leachate bay reactor, the leachate storage tank, and the high rate methanogenic reactor is used for processing waste streams with different values for at least one waste stream characteristic.

A digester system comprising:

• a modular leachate bay reactor having a plurality of bays;
• a leachate storage tank to hydrolyze organics from waste streams;
• and
• a high rate methanogenic reactor to cycle the leachate from the leachate storage tank for biogas production and
• a three stage crystallizer having an auger assembly, hydrocyclone classifier, and gravity settling basin, the crystallizer producing struvite and separating the struvite from the leachate to reduce ammonium and phosphate accumulation in the leachate,
• wherein, each of the leachate bay reactor, the leachate storage tank, and the high rate methanogenic reactor is used for processing waste streams with different values for at least one waste stream characteristic.