High-speed sludge freezing

被引：24

作者：

Chen, LC ^{[1
]}

Chian, CY ^{[1
]}

Yen, PS ^{[1
]}

Chu, CP ^{[1
]}

Lee, DJ ^{[1
]}

机构：

[1] Natl Taiwan Univ, Dept Chem Engn, Taipei 10617, Taiwan

来源：

WATER RESEARCH | 2001年 / 35卷 / 14期

关键词：

sludge; freezing speed; dewaterability; curing; liquid nitrogen;

D O I：

10.1016/S0043-1354(01)00048-3

中图分类号：

X [环境科学、安全科学];

学科分类号：

08 ; 0830 ;

摘要：

The investigation examined the feasibility of applying a "high-speed" freezing technique, using liquid nitrogen freezing, to condition activated sludges and alum sludges. Experimental results indicate that the freezing speed is much faster than that adopted in most previous works on sludge freezing. Although the filterability and settleability of the alum sludge is improved by 3-min liquid nitrogen freezing, no similar improvement is observed for activated sludge. Moreover, curing affects neither sludge after liquid nitrogen freezing, but affects the blow-freezing activated sludge. (C) 2001 Elsevier Science Ltd. All rights reserved.

引用

页码：3502 / 3507

页数：6

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