Pretreatment method of sludge composting feed

The invention belongs to the technical field of sludge composting treatment and specifically relates to a pretreatment method of a sludge composting feed. The pretreatment method specifically comprises the following steps of adding an accessory to sludge before composting treatment, evenly mixing the sludge with the accessory by stirring, and increasing the air permeability of the composting feed and reducing the moisture content, thereby achieving the purpose of optimizing the composting effect, wherein the accessory is peanut shells; the mass percentage of the accessory added is greater than or equal to 7%. According to the pretreatment method of the sludge composting feed, the air permeability of the sludge is increased by adding the accessory and the problem of poor independent composting effect of the sludge is overcome; the mass percentage of the sludge in the composting feed is 93% and the composting treatment efficiency of the sludge is high; the air permeability of the composting feed is improved, the turning times of the pile in the composting process can be reduced and the energy consumption can be reduced; the composting period is shortened and the composting efficiency is improved; the used peanut shells are low in price and easy to get, and the engineering practicability of the peanut shells is increased; the added peanut shells are capable of increasing the nutritive indexes of the composting product and advantageous for recycling of the product.