研究结果表明,单独使用超滤膜处理,可使酸析木素后制浆黑液的CODcI降

The research results show that the use of ultrafiltration membrane treatment alone can reduce the CODcI of the black liquor after acid precipitation of lignin to 614mg/L, and the CODc of white water to 460mg/L, which cannot meet the requirements of the emission standard; Coagulation pretreatment is then treated with ultrafiltration membranes. When the membrane's intercepted relative molecular mass reaches 2000, the CODcr of the pulping black liquor after acid precipitation of lignin is reduced to 61mg/L, and the CODcT of white water is reduced to 49mg/L. Meet the requirements of GB3544-2008 emission standards.

The results show that using ultrafiltration membrane treatment alone can reduce the CODcI of the slurry black liquid after acid analysis lime to 614 mg/L, and the CODc of white water to 460 mg/L, which can not meet the requirements of the emission standard; When the film retention relative molecular mass reached 2000, acid analysis lime pulp black liquid CODcr reduced to 61 mg/L, white water CODcT reduced to 49mg/L, can meet the requirements of GB3544-2008 emission standards.

研究结果表明,单独使用超滤膜处理,可使酸析木素后制浆黑液的CODcI降为614mg/L,白水的CODc,降为460mg/L,不能满足排放标准的要求;而先用混凝法预处理再用超滤膜处理,当膜的截留相对分子质量达到2000时,酸析木素后制浆 黑液的CODcr降为61mg/L,白水的CODcT降为49mg/L,可以达到GB3544-2008排放标准的要求。<BR>