Method for treating Xuan paper raw material wingceltis bark soaking wastewater

The invention is applicable to the technical field of Xuan paper industrial wastewater treatment and particularly relates to a method for treating Xuan paper raw material wingceltis bark soaking wastewater. The method comprises the following specific steps: a) sealing; b) settling; c) performing biological treatment; d) performing after-treatment. Compared with the prior art, the method disclosedby the invention has the advantages that the wingceltis bark soaking wastewater is sealed and stored in an oxygen-free manner, lots of pentose contained in the wingceltis bark soaking wastewater is fermented and decomposed into ethanol and carbon dioxide, and organic macromolecules are decomposed into small molecules by anaerobic bacteria and amphimicrobes. Moreover, the oxygen-free sealed storagecost input is very low, but the COD can be effectively reduced, the workload is lightened for the subsequent process, and the energy consumption is reduced. The small molecule organic matters decomposed by the anaerobic bacte