以煤矸石为原料的PAFCC絮凝剂的制备与应用试验研究
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西南交通大学

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Preparation and Application of PAFCC Flocculant Using Coal Gangue as Raw Material
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Southwest Jiaotong University

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    摘要:

    以煤矸石为原料,经过高温焙烧、酸浸、聚合、熟化等过程制备了高效无机高分子絮凝剂聚合氯化铝铁钙(PAFCC),通过单因素实验研究了PAFCC制备条件对浊度、COD和UV254去除率的影响。试验表明PAFCC最佳聚合条件为pH=2,聚合温度为60 ℃,聚合时间5 h,在40℃下熟化28 h。混凝结果表明制备的PAFCC对浊度有极好的去除效果,达到95.70%,同时对COD、UV254有一定去除效果,去除率分别达到47.51%、45.98%。炼化废水混凝结果表明,PAFCC对浊度和总磷有较好的去除效果,同时对COD及氨氮有一定去除效果,效果明显优于传统PAC。

    Abstract:

    Using coal gangue as raw material, high-efficiency inorganic polymer flocculant polyaluminum iron calcium chloride (PAFCC) was prepared through high-temperature roasting, acid precipitation, polymerization, and maturation. And UV254 removal rate. The test showed that the coagulant prepared at pH=2, the polymerization temperature was 60 ℃, the polymerization time was 5 h, and the coagulant prepared at 40 ℃ for 28 h was the best. The coagulation results showed that the prepared PAFCC had excellent removal effect on turbidity, reaching 95.70%, and had a certain removal effect on COD and UV254, and the removal rates reached 47.51% and 45.98%, respectively. The coagulation results of the refining wastewater showed that PAFCC had a good removal effect on turbidity and total phosphorus, while it had a certain removal effect on COD and ammonia nitrogen, and the effect was significantly better than traditional PAC.

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历史
  • 收稿日期:2020-03-10
  • 最后修改日期:2020-03-28
  • 录用日期:2020-04-07
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