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- Title
蒙脱石矿物材料絮凝剂的制备、絮凝效果及机理研究.
- Authors
王昶; 胡文红; 张颖; 李丽; 曾明
- Abstract
Montmorillonite flocculant(MTSF)was prepared with acid-modified inorganic mineral montmorillonite(MTS)and used to treat simulated wastewater, to which it was compared with the traditional flocculant polyaluminum chloride(PAC), in terms of settling effect and biotoxicity of the floc. The results showed that MTS(without acid modification)had no obvious flocculation performance, whereas MTSF (with acid modification) had good flocculation performance. Specifically, the maximum turbidity removal efficiency of MTSF reached 96.73% when compared to that of PAC. However, MTSF performed much better than PAC regarding settling volume and settling velocity of the floc. The MTSF flocculation mechanism was attributed to the joint function of adsorption and electrification, caused by a synergistic ef- fect between solid particles and soluble salts of the MTSF, which gave rise to its better floc settling performance and compressive properties. After equilibrium of the flocculation settling process, the floc volume of MTSF was less than one third that of PAC. Overall, MTSF had simi- lar flocculation effect to that of PAC in terms of turbidity removal efficiency, whereas its settling and compressive properties were much bet- ter than those of PAC. The novel flocculant MTSF was assumed to have superior comprehensive flocculation performance compared with tra- ditional flocculants, such as PAC.
- Subjects
MONTMORILLONITE; FLOCCULANTS; POLYALUMINUM chloride; FLOCCULATION in sewage purification; WASTEWATER treatment; TURBIDITY
- Publication
Journal of Agro-Environment Science, 2018, Vol 37, Issue 4, p780
- ISSN
1672-2043
- Publication type
Article
- DOI
10.11654/jaes.2017-1492