Recycling Treated Municipal Wastewater for Industrial Water Use

Section 3
Inventory of Major WWTPs and Potential Industrial Reuse Demands
Table 3.10b. WWTPs in the Lower Mississippi River Watershed
Facility Name
Design
Capacity, mgd
2005 Ann Avg
Flow, mgd
Flow as % of
Design
Capacity
Faribault WWTP 7.0 3.697 52.8%
Lake City WWTP 1.52 0.558 36.7%
Met Council - Empire WWTP* 24 8.458 35.2%
Met Council - Rosemount WWTP* 1.3 0.903 69.5%
Northfield WWTP 5.20 2.067 39.8%
Owatonna WWTP
Plainview-Elgin Sanitary District
5.0 3.531 70.6%
WWTP 1.421 1.053 74.1%
Red Wing WWTP 4.0 2.057 51.4%
Rochester Water Reclamation Plant 19.1 13.462 70.5%
Stewartville WWTP 1.111 0.531 47.8%
Whitewater River Regional WWTP 1.12 0.701 62.6%
Winona WWTP 6.5 3.947 60.7%
Total 77.27 40.965 53.0%
* The Rosemount WWTP is located in the Lower Mississippi River Watershed, but discharges into the Mississippi
River-Headwaters watershed. In 2007 the Empire WWTP will move its discharge near the Rosemount WWTP
discharge and the Rosemount WWTP will be phased out.
Source: MPCA, 2005
Industries and Proximity to WWTPs
A total of 56 industries are permitted to withdraw ground and/or surface water in the
Lower Mississippi River watershed and 25 of these are located within 4 miles of a
larger municipal WWTP. Figure 3.10c presents the location of the industries and
WWTPs in the Lower Mississippi River watershed. Table 3.10c summarizes the
industries within a 4 mile radius of a WWTP. Appendix C provides the full industry
list.
Winona has the largest number of industries in close proximity to its WWTP. Water is
used for metal processing by Badger Foundry Company and Peerless Chain
Company, non-metallic processing by RTP Company, industrial process cooling by
Cytec Engineered Materials, and agricultural processing by International Malting
Company. Red Wing and Faribault are two other cities with multiple industries
within proximity to their WWTP.
There are several agricultural processing facilities within 4 miles of a WWTP. The
larger agricultural processing water users are Associated Milk Producers near the
Rochester WRP (2.7 mgd), International Malting Co. (1 mgd) in the Winona area, and
Marigold Foods (0.3 mgd) near the Met Council’s Empire WWTP.
3-16 Craddock Consulting Engineers
In Association with CDM & James Crook
WWReuseTM1_Sec 3_final.doc