采用部分喷雾冷冻工艺处理纸浆厂和油砂工业废水。

Treatment of pulp mill and oil sands industrial wastewaters by the partial spray freezing process.

作者信息

Gao W, Smith D W, Sego D C

机构信息

Department of Civil Engineering, Lakehead University, Thunder Bay, Ont., Canada P7B 5E1.

出版信息

Water Res. 2004 Feb;38(3):579-84. doi: 10.1016/j.watres.2003.10.053.

DOI:10.1016/j.watres.2003.10.053

PMID:14723926

Abstract

The spray freezing process, a natural freezing technology, was used to treat pulp mill effluent and oil sands tailings pond water. The wastewaters froze partially or completely (i.e. with or without runoff generation) during the spraying operation. Greater than 60% impurity reduction in the spray ice was obtained when 30% of the total volume of the sprayed water was released as runoff. Organic and inorganic contaminants were rejected with different efficiencies. The impurities were uniformly distributed within the ice columns when the spray ice was produced without generating any runoff. While a significant increase in impurity concentration was observed at the bottom of the ice formed with runoff production. The spray freezing process is an effective and economically feasible technique for wastewater treatment in cold regions. To achieve higher impurity removal efficiency, the wastewater should be only partially frozen during spray ice production.

摘要

喷雾冷冻工艺是一种自然冷冻技术，被用于处理纸浆厂废水和油砂尾矿池水。在喷雾操作过程中，这些废水会部分或完全冻结（即产生或不产生径流）。当所喷总水量的30%以径流形式排放时，喷雾冰中的杂质减少了60%以上。有机和无机污染物的去除效率各不相同。在不产生径流的情况下生产喷雾冰时，杂质均匀分布在冰柱内。而在有径流产生时形成的冰底部，杂质浓度显著增加。喷雾冷冻工艺是寒冷地区废水处理的一种有效且经济可行的技术。为了实现更高的杂质去除效率，在喷雾制冰过程中废水应仅部分冻结。