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| Preparation of Iron Aluminum Composite Flocculant and Its Application in Papermaking Wastewater Treatment |
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| DOI：10.11980/j.issn.0254-508X.2015.11.006 |
| Key Words:hydrochloric pickle liquor composite inorganic polymer coagulant papermaking wastewater COD chroma |
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| Abstract:A novel composite inorganic polymer coagulant, polymeric aluminum ferric sulfate chloride (PAFSC) was prepared using waste pickling liquor from the steel industry as the raw material. And the PAFSC was then applied to treat paper mill waste water. The structure and morphology of PAFSC were characterized by Fourier Transform Infrared (FT-IR), X-ray diffraction (XRD) and Scanning electron microscopy (SEM). The comparison between the PAFSC and traditional flocculants or advanced oxidation process was studied. The results showed that the PAFSC generated the iron-aluminum complex with large number of hydroxy complex. When the dosage of this flocculant was 1.0 ml/L, the dosage of the polyacrylamide was 1.0 ml/L, and the waste water was neutral or alkaline, the waste water had the best coagulation performances. Compared with PFS and PAC, PAFSC showed a superior flocculation performance. The coagulation performance of PAFSC was similar to the performance of Fenton oxidation technology. |
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