Preparing an organic fertilizer and methods of making leather from animal waste and collagen

The present invention relates to a process for preparing a collagen of animal leather and waste organic fertilizer, which material consists of the following components: collagen waste, leather waste, waste casings, sawdust and fermenting bacteria. Organic fertilizer raw materials prepared in the present invention are prepared from collagen casing during casing waste and residual proteins failed, these wastes are usually handled waste, it is likely to cause pollution abatement, in order to save energy, which is developed into a useful items, the inventors conducted extensive research to finalize these wastes recycling, turning waste into treasure can achieve the purpose.