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Comparison of Pollution Characteristics of Different Bamboo Chemi-mechanical Pulp Wastewater Using Two Stage Impregnation Pulping Process
Received:July 08, 2022  
DOI：DOI：10.11980/j.issn.0254-508X.2023.03.002
Key Words:bamboo  chemi-mechanical pulp wastewater  pollution characteristic  pulp yield  TOC correlation
Fund Project:广西清洁化制浆造纸与污染控制重点实验室开放基金资助（项目编号 2021KF13）。
Author NameAffiliationPostcode
PAN Aixiang Institute of Chemical Industry of Forest Products CFA， Key Lab of Biomass Energy and Material， Co-Innovation Center of Efficient Processing and Utilization of Forest Resources， Nanjing， Jiangsu Province， 210042 210042
FANG Guigan Institute of Chemical Industry of Forest Products CFA， Key Lab of Biomass Energy and Material， Co-Innovation Center of Efficient Processing and Utilization of Forest Resources， Nanjing， Jiangsu Province， 210042 210042
TIAN Qingwen Institute of Chemical Industry of Forest Products CFA， Key Lab of Biomass Energy and Material， Co-Innovation Center of Efficient Processing and Utilization of Forest Resources， Nanjing， Jiangsu Province， 210042
Guangxi Key Lab of Clean Pulp & Papermaking and Pollution Control， College of Light Industry and Food Engineering， Guangxi University， Nanning， Guangxi Zhuang Autonomous Region， 530004 		530004
LIU Xingjian Institute of Chemical Industry of Forest Products CFA， Key Lab of Biomass Energy and Material， Co-Innovation Center of Efficient Processing and Utilization of Forest Resources， Nanjing， Jiangsu Province， 210042 210042
YIN Hang Institute of Chemical Industry of Forest Products CFA， Key Lab of Biomass Energy and Material， Co-Innovation Center of Efficient Processing and Utilization of Forest Resources， Nanjing， Jiangsu Province， 210042 210042
YANG Qiang Institute of Chemical Industry of Forest Products CFA， Key Lab of Biomass Energy and Material， Co-Innovation Center of Efficient Processing and Utilization of Forest Resources， Nanjing， Jiangsu Province， 210042 210042
HAN Shanming* Institute of Chemical Industry of Forest Products CFA， Key Lab of Biomass Energy and Material， Co-Innovation Center of Efficient Processing and Utilization of Forest Resources， Nanjing， Jiangsu Province， 210042 210042
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Abstract:In this paper， the chemi-mechanical pulping properties of Neosinocalamus affinis and moso bamboo with different chemical impregnation alkali amounts were discussed. The amount of wastewater and CODCr pollution load were compared and studied. The effects of key parameters such as pH value， CODCr， BOD5， total nitrogen （TN）， and total phosphorus （TP） on biochemical treatment were discussed. The ash content of wastewater solids and the contents of main metal ions in ash were measured. The relationship between alkali consumption and pulping yield and wastewater CODCr pollution load was analyzed， and the correlation between wastewater total organic carbon （TOC） and CODCr was studied. The results showed that the strength properties of Neosinocalamus affinis chemi-mechanical pulp were significantly higher than that of moso bamboo chemi-mechanical pulp with the same impregnation alkali amount. The amount of comprehensive wastewater from the two chemi-mechanical pulps was 6.20~7.73 m3/t， the pH values were both above 8.5， and the CODCr pollution load was 178.88~410.44 kg/t. The total alkali consumption amount was related to the pulp yield and wastewater CODCr pollution load， TOC of wastewater was correlated with CODCr.
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