麦草生物化学机械法制浆废液的性能分析

Performance Analysis of Wheat Straw Bio-chemimechanical Pulping Waste Liquor

关键词:  麦草  生物化学机械法制浆  废液  成分分析

Key Words:wheat straw  bio-chemimechanical pulping  waste liquor  component analysis

摘要:对麦草生物化学机械法制浆（Bio-CMP）各工段制浆废液的性能进行了定量分析。结果表明，麦草Bio-CMP各工段废液的固形物含量较低，属低浓废液。废液波美度和色度分别低于4.05（°Bé，20 ℃）和1064.39 C.U。与传统制浆方法相比，Bio-CMP废液COD偏高，总磷和总氮含量较低。废液总悬浮固体和溶解性固体分别在151~20730 mg/L和406~19080 mg/L之间。与其他工段废液相比，碱预处理后的废液电导率值及葡萄糖、木糖和阿拉伯糖含量最高。碱-酶协同预处理得到废液中的可溶性木质素含量最高。

Abstract:The properties of waste liquor from each stage of wheat straw bio-chemimechanical pulping （Bio-CMP） process were quantitatively studied. The results showed that the wheat straw Bio-CMP waste liquor belonged to low concentration waste liquor with a low solid content of each stage. Baume degree and the color values of the waste liquor were lower than 4.05 （°Be， 20 ℃） and 1064.39 C.U.， respectively. Compared with traditional pulping method， the COD of Bio-CMP waste liquor was relatively higher， but with a lower total phosphorus and total nitrogen amount. The total suspended solids and dissolved solids of the Bio-CMP waste liquor were distributed in the range of 151~20730 mg/L and 406~19080 mg/L， respectively. Compared with those from other stages， the electrical conductivity and content of glucose， xylose and arabinose of the waste liquor obtained after caustic pretreatment possessed the highest value， While the soluble lignin content after alkali-enzyme synergistic pretreatment was the highest.