Method for recycling fermentation bacteria and treating wastewater

The invention belongs to the technical field of wastewater treatment, and discloses a method for recycling fermentation bacteria and treating wastewater. The method comprises the following steps: separating a xanthan gum fermentation liquid by a disc separator at a rotation speed of 4000 rpm for 5 min, and collecting the obtained bacterium precipitate and the upper liquid; using the bacterium precipitate to prepare bacterial protein powder, using the upper liquid to extract the xanthan gum, and treating the generated wastewater. The waste bacterium protein is used to prepare the bacterial protein powder with complete nutrient components, and can be used to substitute yeast extract in order to reduce the cost of a fermentation medium, and the wastewater is comprehensively treated. 本发明属于废水处理技术领域，公开了一种回收利用发酵菌体和治理废水的方法，其包括如下步骤：将黄原胶发酵液通过碟片分离机进行分离，转速为4000rpm，离心时间为5min，收集菌体沉淀和上层液体；菌体沉淀用于制备菌体蛋白粉，上层液体用于提取黄原胶，产生的废水进行废水处理工序。本发明利用废弃的菌体蛋白制备出营养成分全面的菌体蛋白粉，可用来替代酵母膏，降低了发酵培养基的成本，并且对废水进行了综合治理。