Biomass concentration in pact process

被引:44
作者
Marquez, MC
Costa, C
机构
[1] Chemical Engineering Department, Faculty of Chemical Sciences, University of Salamanca, 37008 Salamanca, Plaza de la Merced s/n
关键词
powdered activated carbon; biomass; dye removal; activated sludge; wastewater treatment;
D O I
10.1016/0043-1354(96)00007-3
中图分类号
X [环境科学、安全科学];
学科分类号
08 ; 0830 ;
摘要
PACT (Powdered Activated Carbon Treatment) process was developed for the treatment of wastewater containing compounds which are difficult to oxidize. Enhancement properties of activated carbon added to activated sludge units are well known but not justified. In this work the process has been applied in lab plant for the treatment of a synthetic textile wastewater with an azodye used in the wool textile industry (Acid Orange 7, C.I. 15510). Microorganism growth on a carbon surface is only reached at low values of biomass concentration (low sludge age), and then a high percentage of dye removal is obtained (97.0 +/- 1.6%). The influence of biomass concentration on COD and dye removal is discussed because this variable is essential especially in dye removal. The carbon surface is visualized by microscope techniques and it is shown that a strong dependence exists between pollutant removal and biomass concentration. Copyright (C) 1996 Elsevier Science Ltd
引用
收藏
页码:2079 / 2085
页数:7
相关论文
共 22 条
[1]  
*APHA AWWA WPCF, 1986, STAND METH EX WAT WA, P533
[2]   MATHEMATICAL-MODEL SUGGESTED FOR A CARBON ACTIVATED-SLUDGE SYSTEM [J].
BENEDEK, P ;
MAJOR, V ;
TAKACS, I .
WATER RESEARCH, 1985, 19 (04) :407-413
[3]  
*CCE, 1982, DIAR OF COM EUR
[4]  
CHANDRA S, 1987, J WATER POLLUT CON F, V59, P1009
[5]  
CORMACCK JW, 1984, P 38 IND WAST C, P403
[6]  
CRESPI M, 1987, B INTEXTAR, V92, P75
[7]  
DEWALLE FB, 1977, J WATER POLLUT CON F, V49, P593
[8]  
ESCALAS A, 1989, TECNOLOGIA AGUA, V60, P35
[9]  
Flynn BP, 1975, P 30 IND WAST C PURD, P233
[10]  
FLYNN BP, 1976, P 31 PURD IND WAST C, P855