Effect of ozonation on activated sludge solubilization and mineralization

被引:68
作者
Déléris, S
Paul, E
Audic, JM
Roustan, M
Debellefontaine, H
机构
[1] Inst Natl Sci Appliquees Toulouse, Dept Genie Proc Ind, Lab Ingn Proc Environm, F-31077 Toulouse 4, France
[2] Suez Lyonnaise Eaux, Ctr Int Rech Eau & Environm, F-78230 Le Pecq, France
关键词
ozone; wastewater treatment; activated sludge mineralization; biodegradability; sludge production reduction;
D O I
10.1080/01919510009408791
中图分类号
X [环境科学、安全科学];
学科分类号
08 ; 0830 ;
摘要
New strategies for sludge stabilization and mineralization need to be developed since the use of sludge in agriculture is debatable and sludge incineration cannot be a systematic solution. Minimization of sludge production should be preferred. In this work, the effect of ozone on activated sludge solubilization and mineralization during batch experiments is assessed by establishing carbon and ozone mass balances. After extended ozonation of the sludge, more than 90% of the particulate carbon is modified. Depending on the experimental conditions, from 15 to 50% is found in a soluble form and from 35% to 95% was mineralized. The VSS / SS ratio decreases from 86% to less than 50% illustrating the sludge mineralization. The initial rate of ozone consumption by the sludge is very high (estimated value: 30 mgO(3) / g VSS.min) and corresponds to high rates of carbon solubilization and mineralization. More than 50% of the carbon obtained after ozonation is found to be readily biodegradable using a short-term BOD procedure.
引用
收藏
页码:473 / 486
页数:14
相关论文
共 18 条
[1]  
[Anonymous], 1994, REC NORM FRANC 1994
[2]   Enhanced anaerobic degradation of mechanically disintegrated sludge [J].
Baier, U ;
Schmidheiny, P .
WATER SCIENCE AND TECHNOLOGY, 1997, 36 (11) :137-143
[3]  
CANALES J, 1991, THESIS INSA TOULOUSE
[4]   Alkaline and ultrasonic pretreatment of sludge before anaerobic digestion [J].
Chiu, YC ;
Chang, CN ;
Lin, JG ;
Huang, SJ .
WATER SCIENCE AND TECHNOLOGY, 1997, 36 (11) :155-162
[5]  
DELERIS S, 1999, 2 EUR C CHEM ENG MON
[6]   CHEMICAL AND STRUCTURAL (2D) LINKAGE BETWEEN BACTERIA WITHIN ACTIVATED-SLUDGE FLOCS [J].
JORAND, F ;
ZARTARIAN, F ;
THOMAS, F ;
BLOCK, JC ;
BOTTERO, JY ;
VILLEMIN, G ;
URBAIN, V ;
MANEM, J .
WATER RESEARCH, 1995, 29 (07) :1639-1647
[7]  
KAMIYA T, 1997, 13 OZ WORLD C KYOT J, V1, P199
[8]  
Marco A, 1997, WATER SCI TECHNOL, V35, P321, DOI 10.2166/wst.1997.0147
[9]   EVALUATION OF OZONE INDUCED BIODEGRADABILITY OF WASTEWATER-TREATMENT PLANT EFFLUENT [J].
NARKIS, N ;
SCHNEIDERROTEL, M .
WATER RESEARCH, 1980, 14 (08) :929-939
[10]  
PAUL E, 1999, MAT BIOD ENV C 5 6 M