造纸废水资源化和超低排放关键技术及应用

摘要

Large amount of lignin、hemicellulose and other organic chemicals were discharged into revers and seas along with waste water or burned for low-value utilization during the process of pulping and papermaking.This not only caused serious environmental problems,but also wasted a lot of renewable resources.Therefore,for the paper industry have introduced a variety of environmental polices and implemented higher environmental standards.Some enterprises have to face the risk of shutting down because of the high treatment cost and higher environment protection.The serious problem was how to realize the reuse of paper industry wastewater and ultra-low emission in modem paper industry.In this paper,the recent research advances and engineering practice of common paper resource utilization technology and ultra-low emission technology were summarized,such as anaerobic fermentation for biogas,sludge resources utilization,advanced oxidation process,membrane separation technology,active carbon absorption and separation technology,sand filtration technology,magnetic finishing technology and constructed wetland research.This conclusion could promote scientific research and engineer utilization of paper wastewater and ultra-low emission technology and a clean and green production for the paper industry.%制浆造纸过程中大量的木素、半纤维素等有机物随着废水排入江河湖海或被焚烧低值化利用,大量资源被浪费并引起严重环境问题.随着国家环保力度的加大,各种水污染防治政策密集出台,更高要求的环保标准也逐步实行,部分企业存在处理废水成本高、不达标等问题,面临关停风险,给造纸企业带来巨大挑战.如何实现造纸废水的资源化和超低排放是摆在每个造纸人面前的严峻问题.本文总结了我国常见造纸资源化利用技术和超低排放技术的研究近况及工程实践情况.如厌氧产沼气技术、污泥资源化利用技术等,高级氧化法、膜分离技术、活性炭吸附分离技术、砂滤技术、磁整理技术和人工湿地等的研究及工程实践应用.旨在促进我国造纸废水资源化和超低排放技术的科研及工程应用,加速实现造纸行业清洁化、绿色化.