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首页> 外文期刊>Waste and biomass valorization >Coagulation-Flocculation as an Alternative Way to Reduce the Toxicity of the Black Liquor from the Paper Industry: Thermal Valorization of the Solid Biomass Recovered
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Coagulation-Flocculation as an Alternative Way to Reduce the Toxicity of the Black Liquor from the Paper Industry: Thermal Valorization of the Solid Biomass Recovered

机译：凝血 - 絮凝作为减少造纸工业中黑液毒性的替代方法：恢复固体生物量的热算量

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Pulp and paper mills generate a huge amount of wastewater and some of them, especially non-wood paper mills, do not possess recovery systems. In this research work, the effectiveness of coagulation-flocculation using poly (ethylene oxide), poly aluminium chloride and poly (dimethyl diallyl ammonium chloride) for the treatment of a black liquor obtained from a pulp mill (with wheat straw as the raw material) is reported. Furthermore, the calorific potential of the solid fraction generated after these treatments was investigated with the aim of enhancing this residue. Chemical oxygen demand (COD), turbidity and total solids (TS) were determined in the supernatants obtained from the different coagulation-flocculation processes. The treatment with poly (ethylene oxide) at pH 2.0 achieved the maximum reduction of TS (66%), COD (75%) and Turbidity (95%) in the black liquor and the precipitated solid fraction with the highest calorific value (19.9 MJ/kg).
机译：纸浆和造纸厂产生了大量的废水，其中一些，特别是非木制造纸厂，不具有恢复系统。在本研究中，使用聚（环氧乙烷），聚氯化铝和聚（二甲基二甲基氯化铵）处理从纸浆磨机（用麦秸作为原料）的黑液进行凝血 - 絮凝的有效性据报道。此外，研究了这些处理后产生的固体级分的热量潜力，目的是增强该残余物。在不同凝固 - 絮凝方法获得的上清液中测定化学需氧量（COD），浊度和总固体（TS）。在pH 2.0下用聚（环氧乙烷）的处理达到黑液中Ts（66％），鳕鱼（75％）和浊度（95％）的最大降低，沉淀的固体级分，热量值（19.9 mJ /公斤）。

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