Method for preparing composite strain carbon source from kitchen garbage, composite strain carbon source and application

The invention provides a method for preparing a composite strain carbon source from kitchen garbage, the composite strain carbon source and application. The method comprises the following steps: crushing, dewatering and grinding the kitchen garbage to prepare an organic matter mixture; and mixing the organic matter mixture with a biological strain to obtain the composite strain carbon source. Kitchen garbage is used as a raw material, an organic matter mixture is prepared through smashing, water removal and grinding treatment, and the organic matter mixture and biological strains are mixed to prepare the composite strain carbon source. The composite strain carbon source can be used for safely and efficiently treating sewage. According to the application, the kitchen garbage and the biological strain which are rich in source and low in cost are used as raw materials and are prepared into the composite strain carbon source for sewage treatment, so that harmless treatment and resource recycling of the kitchen ga