Recycling Treated Municipal Wastewater for Industrial Water Use

Craddock Consulting Engineers 3-1
In Association with CDM & James Crook
WWReuseTM1_Sec 3_final.doc
Section 3
Inventory of Major WWTPs and Potential
Industrial Reuse Demands
This section reviews the historical water use in the state for major industrial users in
context with municipal wastewater treatment plants’ (WWTPs’) location and
production capacity. A more in-depth review of industries in proximity to reclaimed
water suppliers is provided for each individual watershed. General information on
the existing water sources in the watersheds and areas that may be prone to water
supply problems is also provided. The Minneapolis/St. Paul metro area is examined
on a WWTP basis, where industries located within a one- and five-mile radius of each
existing metro area WWTP are identified.
A brief summary of the industrial reuse customer inventory sets the framework for
the evaluation of the inventory in the next stage of the project. In Task 2, the
industries or areas where water reuse could have the most impact will be identified
and further analyzed to explore treatment requirements, costs, and implementation
issues.
3.1 Statewide Inventory
Industry Water Use
The nine industrial water use categories used by MDNR in their Appropriations
Permit database are subdivided in the database into the following:
Power Generation
o Hydropower
o Steam power cooling – once through
o Steam power cooling – wet tower
o Steam power cooling – ponds
o Steam power other than cooling
o Nuclear power plant
o Power generation (miscellaneous not fitting other categories)
Industrial Processing
o Agricultural processing (food & livestock)
o Pulp and paper processing
o Mine processing (not sand & gravel washing)
o Sand and gravel washing
o Industrial process cooling once-through
o Petroleum-chemical processing, ethanol
o Metal processing
o Non-metallic processing (rubber, plastic, glass)
o Industrial processing