SIMULATION OF THE SLUDGE BLANKET OF A VERTICAL CLARIFIER IN AN ACTIVATED-SLUDGE PROCESS

被引：12

作者：

LAIKARI, H

机构：

[1] Water and Environment Research Institute, National Board of Waters and Environment, 00101 Helsinki, Finland

来源：

WATER SCIENCE AND TECHNOLOGY | 1989年 / 21卷 / 6-7期

关键词：

Mathematical models - Sewage treatment--Activated sludge;

D O I：

10.2166/wst.1989.0264

中图分类号：

X [环境科学、安全科学];

学科分类号：

08 ; 0830 ;

摘要：

This study deals with evaluation of peak loading effects from storm and snowmelt waters on the operation of a final settling unit. The load variations have been investigated using a full-scale final settling unit for which a dynamic simulation model has been developed. The model simulates profile changes in the sludge blanket caused by load variations. Furthermore, it can be used for detailed investigations into the effects of flow, solids loading, and sludge recycling on the sludge profile and clarifier capacity by varying the settling velocities within the sludge blanket. With help of the model, the dimensioning and design principles of a vertical clarifier can be further improved. In addition, a new in-situ method for the determination of sludge settling velocity has been developed, which can also take into account the influence of sludge blanket thickness on sludge settling velocity.

引用

页码：621 / 629

页数：9