Energy Reduction Methods in the Aeration Process at Perth

0,85
MB Wastewater Treatment Plant

88
stron

5271
ID University of Strathclyde

2002
rok

Contents

Aims 5

Chapter 1- Background

Overview of Perth Wastewater Treatment Plant 7

The Activated Sludge Process 8

The polluting strength of wastewater 10

Monod Kinetics 11

Chapter 2 – Modelling of the Activated Sludge Process

IAWQ notation and ASM1 matrix 12

IAWQ components 14

Description of original COST model 17

Influent Filtering 18

Mass Balances 20

Influent Normalisation 22

Description of Perth WWT model 23

Aeration System 28

Constant flow simulations 33

Telemetry flow simulations 37

Chapter 3 –Control of the Activated Sludge Process

Introduction to control 39

On-Off Control 40

PID Control 44

Diffused Aeration 50

PID control of Diffused Aeration 55

Chapter 4 – Discussion and Conclusion

Cost of Each Mode of Aeration 58

Table of Relative Projected Annual costs 62

Conclusion 63

Further Work 65

Appendices 66

Bibliography 86