首页> 外国专利> COAGULATION-FLOCULATION METHOD FOR THE SEPARATION OF BIOMASS CONTAINING LIGNIN AND HEMICELLULOSES FROM THE WASTEWATER OF WOOD PROCESSING ENTERPRISES

COAGULATION-FLOCULATION METHOD FOR THE SEPARATION OF BIOMASS CONTAINING LIGNIN AND HEMICELLULOSES FROM THE WASTEWATER OF WOOD PROCESSING ENTERPRISES

机译:混凝-絮凝法从木材加工企业废水中分离含木质素和半纤维素的生物质

摘要

The invention relates to a coagulation-flocculation method for the separation of biomass containing lignin and hemicelluloses from the wastewater from wood processing factories.The method is characterized by polyaluminium chloride composite coagulant (KPAH) and polyethyleneimine (PEI) with the mass ratio KPAH:PEI = 3/1–2/1 used for coagulation. An optimal dose of coagulant is 50–70 mg/l and optimal pH value of the process is 6.0–7.0. The offered method comprises mixing of a coagulant with the wastewater and the further separation of the coagulated biomass by settling and ultracentrifugation.This method increases the output of waste wood biomass and lignin from the wood processing wastewater as well as significantly decreases aluminium concentration in the treated water that will significantly reduce the load on the waste treatment facilities.
机译:本发明涉及一种从木材加工厂废水中分离出含有木质素和半纤维素的生物质的混凝-絮凝方法。该方法的特征在于,聚氯化铝复合混凝剂(KPAH)和聚乙烯亚胺(PEI)的质量比为KPAH:PEI。 = 3 / 1–2 / 1用于凝结。混凝剂的最佳剂量为50-70 mg / l,过程的最佳pH值为6.0-7.0。所提供的方法包括将混凝剂与废水混合以及通过沉降和超速离心进一步分离凝结的生物质,该方法增加了木材加工废水中废木材生物量和木质素的产量,并显着降低了处理后铝的浓度可以大大减少废物处理设施负荷的水。

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