Digital image analysis to estimate the influence of sodium dodecyl sulphate on activated sludge flocs

被引：25
作者：
Liwarska-Bizukojc, E
Bizukojc, M
机构：
[1] Tech Univ Lodz, Dept Environm Engn, PL-90924 Lodz, Poland
[2] Tech Univ Lodz, Dept Bioproc Engn, PL-90924 Lodz, Poland
来源：
PROCESS BIOCHEMISTRY | 2005年 / 40卷 / 06期
关键词：
activated sludge; biodegradation; image analysis; linear alkyl sulphate; sodium dodecyl sulphate; surfactant;
D O I：
10.1016/j.procbio.2004.07.020
中图分类号：
Q5 [生物化学]; Q7 [分子生物学];
学科分类号：
071010 ; 081704 ;
摘要：
The results of a quantitative description of activated sludge flocs exposed to anionic surfactant sodium dodecyl sulphate (SDS) are presented. Image analysis procedures are applied to measure the morphological parameters of activated sludge flocs. Surfactant influenced sludge flocs properties even at low concentration from 2.5 to 25 mg L-1. Mean projected area of flocs decreased by about 30% at SDS concentrations from 2.5 to 25 mg L-1 and by about 60% at concentrations from 250 to 2500 mg L-1. The decrease of sludge flocs dimensions deteriorates their settleability. Additionally, a linear correlation between total suspended solids (TSS) and mean projected area was found within the duration of the biodegradation process. (c) 2004 Elsevier Ltd. All rights reserved.
引用
收藏
页码：2067 / 2072
页数：6
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