Recycling Treated Municipal Wastewater for Industrial Water Use

Contents
Section 1 – Introduction
Craddock Consulting Engineers i
In Association with CDM & James Crook
TM1-Table of Contents_0707.doc
1.1 Project Vision ............................................................................................................1-1
1.2 Water Use in Minnesota .........................................................................................1-2
1.3 Water Reuse Background .......................................................................................1-5
Industrial ..............................................................................................................1-5
Urban ....................................................................................................................1-6
Agricultural..........................................................................................................1-6
Environmental and Recreational ......................................................................1-6
Ground Water Recharge.....................................................................................1-6
Augmentation of Potable Supplies...................................................................1-6
1.4 Wastewater Reuse in Minnesota ............................................................................1-7
1.5 Document Contents .................................................................................................1-8
1.6 References ..................................................................................................................1-8
Section 2 – Implementation Considerations
2.1 Drivers for Reuse .....................................................................................................2-1
2.2 Regulatory Requirements .......................................................................................2-2
Current Water Reuse Practice in Minnesota ...................................................2-2
Comparison to Other State Regulatory Practices ...........................................2-4
Water Reuse Criteria for Industrial Uses.......................................................2-12
Implications of No Water Reuse Guidelines or Regulations ......................2-13
2.3 Technical Considerations .....................................................................................2-14
Water Quality ....................................................................................................2-14
Recommended Water Quality.........................................................................2-17
Treatment Requirements and Technologies..................................................2-20
2.4 Institutional Considerations .................................................................................2-26
2.5 Examples of Reuse in Minnesota and Industrial Reuse ...................................2-26
Minnesota Reuse Applications........................................................................2-26
Cooling Water....................................................................................................2-27
2.6 References ...............................................................................................................2-29
Section 3 – Inventory of Major WWTPs and Potential Industrial Reuse Demands
3.1 Statewide Inventory ................................................................................................3-1
Industry Water Use.............................................................................................3-1
Wastewater Treatment Plants ...........................................................................3-5
Proximity of Industries to WWTPs...................................................................3-5
3.2 Watersheds Inventories ...........................................................................................3-6
Overview ..............................................................................................................3-6
Cedar River ..........................................................................................................3-8
Des Moines River ..............................................................................................3-11