摘要：

针对某制浆造纸废水的特性,采用铁炭微电解—厌氧—好氧组合处理工艺。实验结果表明:当进水COD_Cr为2 500 mg/L,色度为300倍时,铁炭微电解预处理,不仅去除了40%的CODCr和80%的色度,还大幅提高了废水的可生化性,B/C从0.23提高到0.42;微电解出水经过厌氧和好氧处理,COD_Cr去除率分别为70%和55%,最终出水COD_Cr在250 mg/L以下,色度为50倍,达到《造纸工业水污染物排放标准》(GB 3544—2001)二级排放标准。

关键词: 制浆造纸废水, 铁炭微电解, 厌氧, 好氧

Abstract:

In view of the characteristics of paper pulping and making wastewater,it is treated by ferric-carbon micro-electrolysis-anaerobic-aerobic process.The results show that when the influent COD_Cr is 2 500 mg/L,and chroma 300 times,40% of COD_Cr and 80% of chroma can be removed by using ferric-carbon micro-electrolysis pretreatment.The biodegradability is also greatly improved,and B/C can be increased from 0.23 to 0.42.After the effluent of micro-electrolysis is treated by anaerobic and aerobic treatment,the removal rates of COD_Cr are 70% and 55% respectively.The final effluent concentration of COD_Cr is under 250 mg/L,and chroma 50 times,reaching the second class of National Standard of Pollutant Discharge from Paper-Making Industry(GB 3544—2001).

Key words: paper pulping and making wastewater, ferric-carbon micro-electrolysis, anaerobic, aerobic

中图分类号: 

• X703.1