Anaerobic digestion system and method

Abstract

An anaerobic digestion system may include a material grinding/pulping portion, a hydrolysis portion arranged downstream of the grinding portion, a multiple chamber anaerobic reactor arranged downstream from the hydrolysis portion and including a gas collection and reintroduction system, a collection system for collecting digestate and gas from the anaerobic reactor.

1 . (canceled) 
     
     
         2 . A waste processing system, comprising:
 an input system comprising a feedstock input device and a liquid feeding system;   a material grinding portion arranged downstream of the input system;   a hydrolysis portion arranged downstream of the material grinding portion;   an anaerobic reactor arranged downstream from the hydrolysis portion;   a collection system for collecting digestate and gas from the anaerobic reactor; and   a single-stage water treatment system arranged at least one of:
 upstream of the liquid feeding system; and 
 downstream of the collection system. 
   
     
     
         3 . The waste processing system of  claim 2 , wherein the single-stage water treatment system is arranged downstream of the collection system and is configured to receive liquid digestate from the collection system and to separate the liquid digestate into a concentrate and a filtrate. 
     
     
         4 . The waste processing system of  claim 3 , wherein the filtrate comprises at least one of irrigation water, cleaning water, and drinking water. 
     
     
         5 . The waste processing system of  claim 2 , wherein the single-stage water treatment system is arranged upstream of the liquid feeding system and is configured to process waste water to produce a concentrate and a filtrate. 
     
     
         6 . The waste processing system of  claim 5 , wherein the single-stage water treatment system is configured to feed the concentrate to the liquid feeding system. 
     
     
         7 . The waste processing system of  claim 6 , wherein the filtrate comprises at least one of irrigation water, cleaning water, and drinking water. 
     
     
         8 . The waste processing system of  claim 2 , wherein the feedstock input device feeds agricultural waste to the material grinding portion. 
     
     
         9 . The waste processing system of  claim 8 , wherein the liquid feeding system feeds waste water to the material grinding portion. 
     
     
         10 . The waste processing system of  claim 9 , wherein the single-stage water treatment system is arranged at least downstream of the collection system and the waste processing system produces gas for energy production, organic fertilizer, and clean water. 
     
     
         11 . The waste processing system of  claim 10 , wherein the clean water is drinking water. 
     
     
         12 . The waste processing system of  claim 10 , wherein the gas is suitable for energy production in a generator without first scrubbing the gas.