Biological oxygen demand (BOD) monitoring by a multiprocessing system

Author

Hassapis, George

Author_Institution

Dept. of Electr. Eng. Aristotle Univ., Thessaloniki, Greece

Volume

40

Issue

6

fYear

1991

fDate

12/1/1991 12:00:00 AM

Firstpage

1015

Lastpage

1020

Abstract

The describes the development of a prototype device in which parallel computer control techniques are used for the rapid on-line measurement of the biological oxygen demand (BOD). Wastewater samples diluted with fresh water are fed into a whirl bed reactor in which microorganisms are grown. A computer-based feedback controller keeps the oxygen consumed in the reactor to a constant value by dynamically adjusting the dilution ratio of fresh water to waste water. The BOD is assessed by monitoring the controller output changes in the dilution ratio. The application of a linear quadratic control algorithm implemented by a specially designed two-processor computer architecture has resulted in a measurement delay of 2 min

Keywords

biological techniques and instruments; biology computing; chemical analysis; computerised control; computerised monitoring; oxygen; parallel architectures; water treatment; 2 min; biochemical analysis; biological oxygen demand; dilution ratio; feedback controller; linear quadratic control algorithm; microorganisms; parallel computer control; reactor dynamics; two-processor computer architecture; waste water; whirl bed reactor; Adaptive control; Biological control systems; Biology computing; Board of Directors; Computerized monitoring; Concurrent computing; Inductors; Microorganisms; Prototypes; Wastewater;

fLanguage

English

Journal_Title

Instrumentation and Measurement, IEEE Transactions on

Publisher

ieee

ISSN

0018-9456

Type

jour

DOI

10.1109/19.119784

Filename

119784