Method of Aerobic Treatment of Poultry Manure and Apparatus for Producing Organic Fertilizer

Abstract

A bio-chamber and a method of making organic fertilizer from poultry manure. The bio-chamber has a chamber body that defines a receiving chamber and an aeration chamber. The aeration chamber underlies the receiving chamber and is divided therefrom by a partition. The partition has a plurality of holes formed therein. An oxygen probe and a temperature probe are positioned inside the receiving chamber. An air blower is connected to the aeration chamber and is operable to blow air therein. The method comprises: mixing the poultry manure with a carbon carrier; loading the mixture into the receiving chamber; monitoring the temperature and the oxygen concentration of the mixture; aerating the mixture; and regulating the temperature and the oxygen concentration by adjusting the operation of the air blower. The temperature and oxygen concentration are regulated to provide conditions that permit aerobic bacteria to propagate and biodegrade the mixture.

1 . A method of making organic fertilizer from poultry manure mixed with a carbon carrier, the method comprising:
 mixing the poultry manure with the carbon carrier;   loading the poultry manure and the carbon carrier into the receiving chamber of a bio-chamber for producing organic fertilizer, the bio-chamber comprising:
 a chamber body defining a receiving chamber and an aeration chamber, the aeration chamber underlying the receiving chamber and being divided therefrom by a partition, the partition having a plurality of holes formed therein; 
 at least one oxygen probe positioned inside the receiving chamber; 
 at least one temperature probe positioned inside the receiving chamber; and 
 at least one air blower connected to the aeration chamber and operable to blow air therein; 
   monitoring a temperature of the mixture and an oxygen concentration of the mixture;   evenly and fully aerating all layers of the mixture with the at least one air blower; and   regulating the temperature of the mixture and the oxygen concentration of the mixture by adjusting the operation of the at least one air blower, to provide conditions that permit aerobic bacteria to propagate and biodegrade the mixture.   
     
     
         2 . The method according to  claim 1 , further comprising:
 crushing the poultry manure to a particle size of 5 mm to 10 mm before the poultry manure is mixed with the carbon carrier.   
     
     
         3 . The method according to  claim 1 , wherein the carbon carrier is sawdust. 
     
     
         4 . The method according to  claim 1 , wherein a pH value of the mixture is from 6 to 8. 
     
     
         5 . The method according to  claim 1 , wherein a C:N ratio of the mixture is from 23:1 to 26:1. 
     
     
         6 . The method according to  claim 1 , wherein a moisture content of the mixture is from 49% to 54%. 
     
     
         7 . The method according to  claim 1 , wherein the oxygen concentration of the mixture is maintained above 5%. 
     
     
         8 . The method according to  claim 1 , wherein the temperature of the mixture is maintained below 90° C. 
     
     
         9 . The method according to  claim 1 , wherein the temperature of the mixture is permitted to rise to 75° C., and is then maintained at 75° C. to 85° C. until the biodegradation is complete. 
     
     
         10 . The method according to  claim 1 , wherein the oxygen concentration of the mixture is permitted to fall to 6%, and is then maintained at 5% to 13% until the biodegradation is complete. 
     
     
         11 . The method according to  claim 1 , wherein the organic fertilizer has more than 50% organic matter. 
     
     
         12 . The method according to  claim 1 , wherein the organic fertilizer has a nitrogen:
 phosphorus:potassium ratio from 2-2.5-2.5 up to 2.7-3.0-3.0.   
     
     
         13 . The method according to  claim 1 , wherein the organic fertilizer is free of pathogens, salmonella, and weed seeds.