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Performance Analysis of Wheat Straw Bio-chemimechanical Pulping Waste Liquor
Received:February 01, 2022  
DOI：10.11980/j.issn.0254-508X.2022.10.008
Key Words:wheat straw  bio-chemimechanical pulping  waste liquor  component analysis
Fund Project:国家重点研发计划（2019YFC1905904）；浙江景兴纸业股份有限公司校企合作项目。
Author NameAffiliationPostcode
LI Chenxi* School of Light Industry Science and Engneering， Tianjin Key Lab of Pulp and Paper， Tianjin University of Science and Technology， Tianjin， 300457 300457
FAN Zhongqiu School of Light Industry Science and Engneering， Tianjin Key Lab of Pulp and Paper， Tianjin University of Science and Technology， Tianjin， 300457 300457
SONG Jiayi School of Light Industry Science and Engneering， Tianjin Key Lab of Pulp and Paper， Tianjin University of Science and Technology， Tianjin， 300457 300457
SHAO Xuejun Shandong Century Sunshine Paper Group Co.， Ltd.， Weifang， Shandong Province， 262400 262400
LIU Chunlan Shandong Century Sunshine Paper Group Co.， Ltd.， Weifang， Shandong Province， 262400 262400
CHENG Zhengbai Zhejiang Jingxing Paper Joint Stock Co.， Ltd.， Pinghu， Zhejiang Province， 314214 314214
CAO Haibing School of Light Industry Science and Engneering， Tianjin Key Lab of Pulp and Paper， Tianjin University of Science and Technology， Tianjin， 300457
Zhejiang Jingxing Paper Joint Stock Co.， Ltd.， Pinghu， Zhejiang Province， 314214 		314214
XU Ke Chengdu Bestway Technology Co.， Ltd.， Chengdu， Sichuan Province， 610000 610000
LIU Hongbin School of Light Industry Science and Engneering， Tianjin Key Lab of Pulp and Paper， Tianjin University of Science and Technology， Tianjin， 300457 300457
AN Xingye School of Light Industry Science and Engneering， Tianjin Key Lab of Pulp and Paper， Tianjin University of Science and Technology， Tianjin， 300457 300457
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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.
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