Page 209 - Wastewater Solids Incineration Systems

Chapter 8

Ash Handling and Recycling

1.0 INTRODUCTION 175 3.2.1 Conveyance 180

2.0 SOURCES OF ASH 176 3.2.1.1 Mechanical
Conveyance
3.0 ASH HANDLING 177 Systems 180
3.1 Wet Systems 177 3.2.1.2 Pneumatic
3.1.1 Conveyance 177 Conveyance
Systems 182
3.1.1.1 Ash Sluiceways 177
3.1.1.2 Ash Slurry Well 177 3.2.2 Storage 185
3.1.1.3 Ash Pumps 178 3.2.2.1 Ash Storage
3.1.1.4 Ash Pipelines 178 Bins 185
3.1.1.5 Mechanical 3.2.2.2 Dry Ash
Conveyance 179 Conditioners 186
3.1.2 Storage 179
4.0 INSTRUMENTATION
3.1.2.1 Ash Lagoon 179
AND CONTROLS 187
3.1.2.2 Bins 179
3.1.2.3 Mechanical 5.0 RECYCLING 187
Thickening and
6.0 REGULATIONS 188
Dewatering 179
3.2 Dry Systems 179 7.0 REFERENCES 195

1.0 INTRODUCTION

Ash is the end product of solids incineration, essentially consisting of the noncom-
bustible portions of the feed material. There are numerous methods and equipment
available for handling ash and there are various uses for recycled ash. Handling
methods and the final destination or use of material is often site-specific. Ash handling
equipment can be the most troublesome subsystem associated with incinerators.

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