The invention relates to an
alcohol type
fermentation wastewater purification treatment and circulation method which comprises the following steps: removing
solid impurities in
alcohol type
fermentation wastewater by using a
centrifuge; further adjusting the pH value of the
alcohol type
fermentation wastewater after decontamination to 4.5-8.5 by using quick
lime, leaving to stand and settle down,filtering, and carrying out
solid-liquid separation; carrying out purification treatment on the settled alcohol type fermentation wastewater by using organic modified attapulgite clay which accounts for 1.0-5.0% of the
mass of the alcohol type fermentation wastewater, adsorbing for 0.5-4.0 hours in a shaking
bed at a normal temperature at normal pressure, and carrying out
solid-liquid separation after adsorption is completed; feeding back the alcohol type fermentation wastewater after adsorption to a fermentation process, thereby achieving circulation. By adopting the method, the content of acid fermentation inhibitors is greatly reduced, the fermentation wastewater can be recycled for further fermentation, emission of wastewater in an
alcohol production process can be avoided, meanwhile,
activated carbon or a resin which is high in price is not used, and the organic modified attapulgite clay which is low in price is used instead, so that the alcohol type fermentation wastewater treatment cost can be lowered, and a novel method is provided for purification treatment and circulation of the alcohol type fermentation wastewater.