【摘要】 论述了各类化机浆废水的发生量、污染特征和生物毒性。总结了国内采用厌氧-好氧生物技术治理化机浆废水的几个典型工程。介绍了中国林科院制浆造纸研究开发中心对化机浆废水进行电化学、强氧化深度处理的技术成果。首次对国内数十种速生材制CTMP、P-RC APMP化机浆废液的蒸发性能、燃烧性能进行了较系统的研究,全面监测了各种化机浆废水的固形物、有机物、无机物含量、固形物中元素种类与含量,分析了不同浓度化机浆废水的密度、沸点、黏度。重点检测了化机浆废水固形物的燃烧值,各类固形物燃烧值为12.36~13.84 MJ/kg。作者认为在化机浆废水污染浓度成倍升高和更加严格的制浆造纸水污染物排放新标准的形势下,零排放将是今后若干年我国化机浆工业发展的一个亮点。更多还原

【Abstract】 The generation,pollution characteristics and bio-toxicity of various types of effluents from chemimechanical pulping lines are discussed.Some typical treatment systems operated in domestic mills including anaerobic-aerobic technological treatments of chemimechanical plulping effluents,are summarized.Current research advances from Chinese Academy of Forestry on effluent treatment using electrochemical methed and enhanced oxidation method are introduced,and systematic investigations on evaporation performance and flammable properties of pulping effluents from 10 fast-growing wood species using CTMP and P-RC APMP processes are systematically studied for the first time.At the same time,contents of solids,organics and inorganic,types of elements and contents in solids in effluent from the above pulping processes are investigated.Density,boiling point and visco-sity of effluents at different concentrations are analysed.Heat value of solids from these effluents are measured to be in the range from 12.36 to 13.84 MJ/kg.In conclusion,under the current situation of the steep increase of effluent pollution and more strict requirement of new regulation standards on discharge of pulping effluents,the ideal pathway for chemimechanical pulping effluent treatment will be the process of "zero-discharge" which must be a right solution for the future chemimechanical pulping effluent treatment in China.更多还原