System and method for treating pig manure and cultivation sewage

The invention relates to a system for treating pig manure and cultivation sewage. The system sequentially comprises a solid and liquid mixing device, a medium-temperature anaerobic reactor, a desulphurization device, a gas storage device, a methane generator, a vacuum low-temperature concentration device and a drying device. The method for treating the pig manure and the cultivation sewage comprises the following steps of: fermenting the pig manure and the cultivation sewage to obtain methane which is used for generating electricity, performing solid and liquid separation on wastes generated by fermentation, then drying solid, and concentrating liquid at low temperature to obtain fertilizer and a large amount recycled water for rushing a hurdle. The invention provides the system and the method for treating the pig mature and the cultivation sewage; and the method and the system do not influence environment, are high in benefit and are convenient to operate.