Method for preparing meat powder based on removed meat and waste residues of alkali tanning skins

Abstract

The invention discloses a method for preparing meat powder based on removed meat and waste residues of alkali tanning skins, and relates to the field of resource utilization of tanning waste. The method comprises the following steps: immersing tanned leather into water and ash so as to remove waste meat and meat residues, washing away lime residues, mud residues and adherent vestigial seta, performing oxidation so as to remove sulfide, performing enzymatic hydrolysis on muscle protein components in the meat residues so as to obtain meat pulp, drying the meat pulp, and performing granulation on the dried meat pulp so as to obtain the meat powder. Through the adoption of the method, the regenerated resource utilization of leather waste is realized, the prepared meat powder can be used as a feed or an organic fertilizer, and the burning and the burying of the leather waste are gradually cancelled, so that not only can the production sustainability be ensured, but also the pollution can be eliminated.

Description

technical field [0001] The invention relates to the field of resource utilization of tanning waste, in particular to a method for preparing meat powder based on tanning soda and meat waste residue. Background technique [0002] In the process before tanning, every 25 kg of standard cowhide after soaking and liming is equivalent to 2 kg of normal fresh meat under the condition of water content, and the weight will increase by 40% after soaking and liming. 50%, that is about 3 kg. A medium-sized tannery produces 3,000 pieces of yellow leather every day, and there are 9 tons of meaty dregs. In addition to the composition of this kind of meat dregs originating from the upper and lower tissues of cowhide (such as muscle, subcutaneous connective tissue, fat, hair), there are also a small amount of chemical reagents added in water immersion and liming, such as surfactants (used for immersion, degreasing, etc.) ), lime (for liming), sulfide (for hair removal) and some organic ...

AI Technical Summary

Problems solved by technology

For a long time, these solid wastes are difficult to rot for a while, and they are prone to rot and smell. It is difficult to meet the hygiene and environmental protection requirements directly as feed or burying them. Usually, the best method is incineration, and has not been utilized as a resource.