阳离子角蛋白与聚硫酸铝配合物絮凝剂的制备及其应用

Synthesis and performance evaluation of cationic keratin and polyaluminium sulfate coordination complex flocculant

制得了新型无机一有机配合物絮凝剂，并运用其对皮革染色加脂废水进行絮凝预处理，优化皮革综合废水出水水质。利用傅里叶变换红外光谱仪（FT—IR）对絮凝剂进行结构表征，再对其进行热重（TG）和差示扫描量热法（DSC）测试分析，并分别探讨了不同絮凝剂加入量、pH、絮凝时间、温度对染色加脂废水絮凝效果的影响。试验表明：新合成的絮凝剂在絮疑剂加入2．20g/L、pH=4．0、絮凝时间2．0h、温度25～35℃条件下对COD、悬浮物、色度、总固含量的去除率分别为87．07％、96．56％、99．30％、98．06％，此絮凝剂对皮革染色加脂废水有良好的处理效果。

The new inorganic-organic coordination complex flocculant was prepared and it was used to the pretreatment of dyeing-fatliquoring wastewater to make tannery wastewater cleaner to emission. The structure of copolymer was characterized by Fourier transform infrared spectrometer（FT-IR） and the properties were analyzed by Thermogravimetry（TG） and different scanning calorimetry （DSC）. The influences of flocculant dosages, temperature, pH and flocculating time on the flocculation effects of dyeing-fatliquoring wastewater were studied. The results show that the removal rates of COD, suspended solids（SS）, chroma and total dissolved solids（TDS） are 87. 07%, 96. 56%, 99. 30% and 98. 06% respectively, under the optimum flocculation conditions of flucculant dosage 2. 20g/L,pH value 4, flucculation time 2. Oh, temperature 25 - 35℃ The new flocculant has good removal efficiency on tannery dyeing-fatliquoring wastewater.