Integrated system for anaerobic digestion of organic solid waste

An integrated system for anaerobic digestion of organic solid waste, comprising:

• a continuous stirred-tank reactor;
• a micro-voltage-and conductive material-enhanced reactor;
• and
• a micro-aeration and inert solid waste separation integrated reactor;
• wherein the continuous stirred-tank reactor comprises a first feeding port, a first thermal insulation layer, a heating rod, a biogas outlet, a stirring paddle, a first discharge port and a second feeding port;
• the micro-voltage-and conductive material-enhanced reactor is composed of a hemispherical plate cover, a cylindrical insulating tank body and two column bases;
• an outer side of the hemispherical plate cover is provided with a second discharge port, a pressure transmitter, a pH detection port, a direct-current (DC) regulated power supply, a wire sealing port, a first oxidation-reduction potential (ORP) detection port and a hanging ring;
• and the hemispherical plate cover is sealedly connected to the cylindrical insulating tank body via a flange;
• the cylindrical insulating tank body is sequentially provided with a second thermal insulation layer, an insulator, a carbon fiber felt and a built-in bracket from outside to inside;
• and the carbon fiber felt is connected to the DC regulated power supply through a first insulatively-sheathed wire;
• an interior of the cylindrical insulating tank body is sequentially provided with a feed-upflow zone, an iron-carbon material-loaded slot group, a micro-voltage reaction zone group and a pressurized discharge zone from bottom to top;
• a graphite rod is provided at a center of the interior of the cylindrical insulating tank body;
• a drain pipe is provided in the feed-upflow zone;
• the iron-carbon material-loaded slot group comprises six cylindrical mesh frames identical to each other for storing an iron-carbon material;
• the cylindrical insulating tank body is equally divided into seven portions by the six cylindrical mesh frames;
• each of the six cylindrical mesh frames is fixed to the cylindrical insulating tank body through the built-in bracket, and is in snap-fit with the graphite rod through an insulating sleeve;
• the micro-voltage reaction zone group comprises six micro-voltage reaction zones identical to each other;
• and the pressurized discharge zone is provided with a grid for separation from the six micro-voltage reaction zones, and an end of the graphite rod located in the pressurized discharge zone is connected to the DC regulated power supply through a second insulatively-sheathed wire;
• an outer side of the cylindrical insulating tank body is provided with a third feeding port, an inspection port group and a temperature transmitter;
• the third feeding port is arranged at the bottom of the cylindrical insulating tank body, and a bottom tangent of the third feeding port is coincident with an extension line of a top tangent of the drain pipe;
• the inspection port group comprises six inspection ports, and the six inspection ports are respectively arranged outside the six micro-voltage reaction zones;
• a bottom tangent of each of the six inspection ports is coincident with an extension line of a top tangent of a corresponding one of the six cylindrical mesh frames;
• the micro-aeration and inert solid waste separation integrated reactor comprises a fourth feeding port, a fifth feeding port, a sixth feeding port, an air pump connection port, a third discharge port, a second ORP detection port, a third thermal insulation layer and a fourth discharge port;
• and
• the first discharge port is connected with the third feeding port;
• the second discharge port is connected with the fourth feeding port, the fifth feeding port and the sixth feeding port;
• and the third discharge port is connected with the second feeding port.