1results about How to "Avoid bad smell" patented technology

The application discloses a liquor tailing acid substance extraction method in liquor brewing and liquor, and comprises the following steps of pretreatment, selective adsorption, gradient desorption, membrane separation and purification and liquor body blending. The chelation precipitation-microfiltration coupling process is adopted in the pretreatment to remove metal ions and colloidal impurities; the acid substances are specifically adsorbed through a hexanoic acid molecular imprinting polymer adsorbent, and step-by-step elution is realized by combining with gradient pH desorption; high-purity acid concentrated solution is obtained through nanofiltration membrane separation and activated carbon adsorption, and after screening, the high-purity acid concentrated solution is blended with a base liquor body to improve the quality of the liquor.