中国造纸2026，Vol.45Issue(4)：174-179,6.DOI:10.11980/j.issn.0254-508X.2026.04.022
6000t/a浆渣加工系统高浓废水的预处理工艺设计和应用
Design and Application of Pretreatment Process for High-concentration Wastewater from 6 000 t/a Pulping Residue Processing System
摘要
Abstract
To treat the 3 600 m3/d of highly concentrated organic wastewater(chemical oxygen demand(CODCr)≈45 000 mg/L,suspended solids(SS)content≈21 000 mg/L)generated during the resource recovery process of 6 000 t/a pulping residue,this study designed and constructed a pretreatment process based on coagulation and clarification technology,which prior to discharging into the existing wastewater treatment system.Operational results indicated that,using a flocculant blend comprising polyaluminum chloride(PFC,Fe3+≥11%),polyacrylamide(PAM,mass fraction 0.1%),and clay emulsion(mass fraction from 1.5%to 1.7%),the pretreatment technology achieved a CODCr removal rate of≥75%for the high-concentration wastewater,with a SS content removal rate of≥95%.The effluent CODCr was≤918 mg/L and SS content was≤132 mg/L,meeting the influent requirements of the existing wastewater treatment system.Additionally,the biodegradability(BOD5/CODCr)of the effluent in the system improved by approximately 5%.It effectively resolved clogging issues in the subsequent wastewater treatment system,reduced chemical consumption in the shallow-bed flotation unit by 50%,and improved sludge dewatering efficiency.关键词
浆渣/高浓废水/预处理/混凝澄清Key words
pulping residue/high-concentration wastewater/pretreatment/coagulation and clarification分类
资源环境引用本文复制引用
杜建阳,李楠,徐丕元,孙庭聪,范述捷,王月江,苏振华..6000t/a浆渣加工系统高浓废水的预处理工艺设计和应用[J].中国造纸,2026,45(4):174-179,6.基金项目
云南省专家工作站项目(202605AF350071) （202605AF350071）
中轻集团科技创新基金项目-废纸制浆精筛渣回收技术及系统开发(ZQ2023YY-GX01) （ZQ2023YY-GX01）
高品质思茅松绒毛浆产品研发(202603AS090011-3). （202603AS090011-3）
