秸杆化机浆废水膜处理与膜污染研究  

Research on membrane filtration and fouling characteristics for the treatment of straw chemi-mechanical pulp wastewater

作　　者：盘爱享[1,2] 张华兰[1,2] 施英乔[2] 丁来保[2] 田庆文[2] 冉淼[2] 房桂干[1,2] Pan Aixiang;Zhang Hualan;Shi Yingqiao;Ding Laibao;Tian Qingwen;Ran Miao;Fang Guigan(Research Institute of Forestry New Technology,CAF,Beijing l00091,China;Institute of Chemical Industry of Forest Products,CAF,Key Lab.of Biomass Energy and Material,Jiangsu Province,CoInnovation Center of Efficient Processing and Utilization of Forest Resources,Nanjing Forestry University,Key and Open Lab.of Forest Chemical Engineering,SFA,National Engineering Lab.for Biomass Chemical Utilization,Nanjing 210042,China)

机构地区：[1]中国林业科学研究院林业新技术研究所,北京100091 [2]中国林业科学研究院林产化学工业研究所,江苏省生物质能源与材料重点实验室,南京林业大学林业资源高效加工利用协同创新中心,国家林业局林产化学工程重点开放性实验室,生物质化学利用国家工程实验室,江苏南京210042

出　　处：《工业水处理》2019年第12期49-54,共6页Industrial Water Treatment

基　　金：中央级公益性科研院所基本科研业务费专项(CAFYBB2016SY029)

摘　　要：采用膜分离技术对秸杆化机浆制浆综合废水进行处理,测定了膜污染物洗脱液的比紫外吸光度、总氮、金属离子含量等,并研究膜污染的形式与污染物构成。结果表明,秸杆化机浆废水经沉淀、微滤、超滤、纳滤、反渗透处理后,COD、电导率、SS、TS、色度分别由24050 mg/L、8.36 mS/cm、5.8 g/L、18.6 g/L、13700度降至43 mg/L、0.052 mS/cm、0、0、0,完全达到制浆造纸工业水污染排放标准要求,亦可回用于化机浆生产流程。微滤膜孔堵塞较严重,污染物主要为Si、Mg、Fe、Al、Ca和K;超滤膜污染较轻,Si与Al的胶体物质是主要污染物;纳滤膜污染物主要为Ca、Mg、K;RO膜的污染较轻,主要污染物为Si和Ca。Membrane filtration is used to treat the wastewater of straw chemimechanical pulping.The membrane resistance distribution and membrane fouling mechanism are studied by testing the specific ultraviolet absorbance,total nitrogen and metal element contents of the membrane fouling eluent.The wastewater is successively treated by processes of sedimentation,microfiltration,ultrafiltration,nanofiltration,and reverse osmosis.The results indicate that the COD,conductivity,SS,TS and chroma of the straw chemmechanical pulp wastewater are reduced from 24050 mg/L,8.36 mS/cm,5.8 g/L,18.6 g/L,and 13700 degree to 43 mg/L,0.052 mS/cm,0,0,and 0,respectively.The treated water can fully meet the discharge standard of water pollutants for pulp and paper industry and can also be used in the production process of pulping.The microfiltration membrane is blocked seriously,and the main components of the pollutant are Si,Mg,Fe,Al,Ca and K.Ultrafiltration membrane is lightly polluted,and Si and Al colloid materials are the main pollutants.Ca,Mg,K are the main pollutants of nanofiltration membrane.Reverse osmosis membrane is less polluted,and the main components are Si and Ca.

关 键 词：秸杆化机浆 膜分离 膜污染 

分 类 号：TQ914[化学工程] X793[环境科学与工程—环境工程]