NON-FILAMENTOUS ACTIVATED-SLUDGE BULKING IN A LABORATORY-SCALE SYSTEM

被引：34

作者：

NOVAK, L ^{[1
]}

LARREA, L ^{[1
]}

WANNER, J ^{[1
]}

GARCIAHERAS, JL ^{[1
]}

机构：

[1] CEIT, DEPT ENVIRONM ENGN, E-20080 SAN SEBASTIAN, SPAIN

来源：

WATER RESEARCH | 1993年 / 27卷 / 08期

关键词：

ACTIVATED SLUDGE; BULKING; FILAMENTOUS MICROORGANISMS; FOAMING; SELECTOR; SETTLING PROPERTIES; ZOOGLOEA;

D O I：

10.1016/0043-1354(93)90221-3

中图分类号：

X [环境科学、安全科学];

学科分类号：

08 ; 0830 ;

摘要：

The paper describes the appearance of non-filamentous bulking in a lab-scale activated sludge plant with nitrification-denitrification and reaeration of return sludge. The inlet part of the denitrification zone was operated as an anoxic selector. Although filamentous microorganisms regularly occurred, the sludge settled properly. Deterioration of SVIs was observed after increasing the oleic acid concentration in synthetic wastewater. The bulking period was related to the abundant growth of viscous zoogloeal colonies. The intensive foam production resulted from the excessive appearance of exocellular polymers. A structure of short intertwined fingered projections formed the zoogloeal flocs. After decreasing the oleic acid proportion in the synthetic wastewater to the original level the zoogloeal flocs gradually changed to the well-settling sludge in 3 weeks.

引用

页码：1339 / 1346

页数：8

共 16 条

[1] BULKING-SLUDGE CONTROL - PROGRESS, PRACTICE AND PROBLEMS [J].