【摘要】 以钛铁矿为原料制备聚合钛铁净水剂（I-PTF）,并利用扫描电子显微镜和X射线衍射仪分析其微观特性。通过烧杯实验和污泥沉降实验研究I-PTF净水效果和污泥沉降性能,并利用荧光显微镜观察其污泥形貌。结果表明:I-PTF对COD_Cr的去除效果优于聚合氯化铝（PAC）,在投药量为168 mg/L时,I-PTF对于COD_Cr的去除率比PAC高22%;与PAC相比,I-PTF的污泥体积减量率达到80%以上,其沉降速度也快,11 min左右即可沉降完成;I-PTF形成的絮团更加紧密,边界更加清晰。更多还原

【Abstract】 Polyferric titanium water purification agent（I-PTF） was prepared from ilmenite and its microscopic properties were analyzed using scanning electron microscopy and X-ray diffraction. The water purification effect and sludge settling performance of I-PTF were studied through beaker and sludge settling experiment. The morphology of sludge was observed using a fluorescence microscope. Results showed that the removal rate of COD_Cr by I-PTF was better than polyaluminium chloride（PAC）. When the dosage was 168 mg/L, the removal rate of COD_Cr by I-PTF was 22%,and it was higher than that of PAC. Compared with PAC, the sludge volume reduction rate by I-PTF was more than 80%, and its settling speed was faster. The settling could be completed in approximately 11 minutes. The flocs formed using I-PTF were more compact and the boundary was clearer.更多还原