木材加工废水处理工程实例分析  

Engineering practice of high concentration wood processing wastewater treatment

作　　者：茅宏 金鑫[1,2] 陈利 姚建松[1,2] 梅荣武[1,2] MAO Hong;JIN Xin;CHEN Li;YAO Jiansong;MEI Rongwu(Environmental Science Research&Design Institute of Zhejiang Province,Hangzhou 310007,China;Zhejiang Environmental Science Research Institute Co.,Ltd.,Hangzhou 310007,China)

机构地区：[1]浙江省环境保护科学设计研究院,浙江杭州310007 [2]浙江环科环境研究院有限公司,浙江杭州310007

出　　处：《能源环境保护》2020年第2期65-69,共5页Energy Environmental Protection

基　　金：浙江省省级重点研发计划项目(编号2020C03080)。

摘　　要：针对某木材加工企业生产废水高COD、高氨氮、高色度、含甲醛等特点,采用“芬顿氧化+A/O+沉淀+气浮”组合工艺对原废水处理厂进行扩容提标改造。该工程设计处理规模为600 t/d,总投资为340万元,直接运行成本为4.83元/t。运行效果表明:采用芬顿氧化预处理洗胶废水可有效降解甲醛等高毒性的有机物,增设载体的A/O工艺可提高COD去除效果与抗冲击负荷能力,组合工艺出水COD<400 mg/L,氨氮<20 mg/L,TN<40 mg/L,TP<2 mg/L,甲醛<2 mg/L。According to the high COD Cr and NH+4-N concentrations,high chroma and formaldehyde in the wastewater produced by a wood processing plant,a combined process"Fenton oxidation-A/O-sedimentation-flotation"was adopted for the expansion and upgrading construction of this plant.The treatment scale,total investment and direct operating cost are 600 t/d,3.4 million yuan and 4.83 yuan/ton wastewater.The operation practice shows that strong toxic organics in glue washing wastewater such as formaldehyde is effectively degraded by fenton oxidation.The addition of carrier in A/O process can improve the COD removal efficiency and resistance to shock loads.The effluent quality is COD<400 mg/L,NH+4-N<20 mg/L,TN<40 mg/L,TP<2 mg/L and formaldehyde<2 mg/L.

关 键 词：木材加工废水 芬顿氧化 生化处理 改造工程 

分 类 号：X703[环境科学与工程—环境工程]