活性污泥1号模型应用于污水处理厂最优化运行的研究

摘要

At present，Activated sludge model has great value and call be used to improvethe study，design and optimum operation ofwastewater treatment around the world．It has been applied widely in the world． In this thesis，the application and calibration of Activated Sludge Model No．I inthe practical wastewater treatment plant had been implemented．The characterization and parameter of the outfluent from the rotational flow grit chamber had been measured in the WWTp.The actual operation procedure is simulated in case of both steady and dynamic status using simulation software named as WEST，which is from DHi.Where after different simulation analysis is done to analyses the problems existin this factory，and hence based on the analysis result，the optimized suggestion is arised． The result shows that the method of characterization and parameter in this paper Call is practicaL.The heterotrophic yield coefficient YH，Heterotrophic nlax specificgrowth rateμ<,max>，heterotrophie decay rate bH，readily biodegradable substrate Ss and slowly biodegradable substrate Xs could be characterized by the method of batchOUR respirometric experiments which is simple to calculate，and especially theoutcome date is stable． The WEST software was used to simulate the real operation of the WWTP，theresult shows that using the combination of test mensuration and model calibration，good simulation results were achieved though changing ofthe model parameters． The activated sludge model which was promoted by the IAWQ Can be used as auseful tool in operation management，technical improvement and scientific research inWWTPs．Nevertheless WEST software which was based on the activated sludgemodel could simulate the performance of activated sludge process and providevaluable advices for directing WWTPs．

目录

英文文摘

In the Name of Allah,the beneficent,the merciful

ACKNOWLEDGEMENTS

Chapter one INTRODUCTION

1.1.Preface

1.1.1 What are municipal wastewater effluents?

1.1.2 Why are municipal wastewater effluents of concern?

1.1.3 Characteristics of sewage

1.1.4 Wastewater component

1.1.5 Physical characteristics

1.1.6 Chemical characteristics

1.1.7 Biological characteristics

1.2. Introduction

Chapter Two LITERATURE REVIEW

2.1 Introduction

2.2. Description of the State-of-the-Art Activated Sludge Models

2.2.1. Activated Sludge Model No.1 (ASM1)

2.2.2. COD components in ASM1

2.2.3. Nitrogen components in ASM1

2.2.4. Processes in ASM1

2.3. Restrictions of ASM1

2.4. Model calibration

2.4.1. Information set for model calibration

2.5 Outline of the thesis

2.6 Reasons of selecting the method

2.7 How to approach the Purpose

Chapter Three THE WEST SOFTWARE

3.1. Introduction

3.1.1. The use of fluxes

3.1.2.2 Biological Components in the category ASM1

3.2. Activated sludge unit

3.2.1 ASM 1 processes and reactions

3.2.2 ASM1 parameters

3.3. Configuration issue-WEST

3.4. MODEL ISSUES-WEST

3.4.1 Biological Process Model

3.4.2 Settling Model

3.4.3 Data Processing

3.5. Brief summary

Chapter Four SIMULATION FOR WASTEWATER TREATMENT PLANT

4.1 Introduction

4.2 An engineer circulating parameter

4.3 Steps of WEST simulates in wastewater plant

4.4 WEST simulation foundation

4.4.1 Select mechanism model

4.4.2 Orbal oxidation ditch technical structure establishment

4.4.3 Definition of initial value

4.4.4 Establish graphic windows to manage and control

4. 5 Steady simulation

4.5.1 Input data for Steady simulation

4.5.2 Definition integrator

4.5.3 Calibration of steady simulation

4.5.4 Steady simulation circulation

4.5.5 Summary

4.6 Dynamic simulation and optimization

4.6.1 Input dynamic model

4.6.2 Dynamic simulation emendation

4.6.3 Dynamic simulation function

4.6.4 confirm the best fieldwork condition

4.6.5 Optimize processing simulation

4.6.6 Brief summary

Chapter Five CONCLUSIONS AND SUGGESTIONS

5.1 Conclusions

5.2 Suggestions

References