复合型改性木质素絮凝剂处理抗生素类化学制药废水的研究

Treatment of Antibiotics Pharmaceutical Effluent with a Novel Compound Modified Lignin-Based Flocculant

利用有机/无机复合型改性木质素絮凝剂MLF,处理抗生素类化学制药废水,并进行了絮凝条件的优选实验。结果表明,当抗生素制药废水的pH值为6.0,絮凝剂的用量为120 mg/L时,废水中CODCr、SS和色度的去除率分别达到61.2%、96.7%和91.6%。不同类型絮凝剂的对比实验结果表明,MLF处理抗生素类化学制药废水的用量少,絮凝性能明显优于聚丙烯酰胺(PAM)、聚合硫酸铁(PFS)、硫酸铝钾(PAS)和硫酸亚铁(FS)等絮凝剂。

The sulfomethylated lignoamine was prepared with masson pine ligncsulpbete by Mannich reaction and sulfonation reaction. Then the organic-inorganic compound modified lignin-based flocculant could be obtained by further mixing with sodium aluminate solution. The modified lignin-based flocculant was adopted to treat the antibiotics pbennaceutical effluent. The flocculation conditions were optimized. The removal rates of CODcr, SS and colourity of the efflucot could reach 61.2%, 96.7% and 91.6% respectively under such conditions as effluent pH value 6.0 and flocculant dosage 120 mg/L etc. Moreover, the comparison tests with various flocculants indicated that the flocculation performance of the modified lignin-based flocculant apparently prevailed over such flocculants as polyacrylamide （PAM）, polyferric sulfate （PFS）, potassium aluminium sulfate （PAS） and ferrous sulfate （FS） etc.