St. Cloud Wastewater Treatment Facility (WWTF) Nutrient Harvesting Pilot Project

Project Details by Fiscal Year
2014 Fiscal Year Funding Amount
$35,507
Fund Source
Clean Water Fund
Recipient
Saint Cloud, City of
Recipient Type
Local/Regional Government
Status
Completed
Start Date
August 2014
End Date
June 2016
Activity Type
Assessment/Evaluation
Demonstration/Pilot Project
Counties Affected
Stearns
2014 Fiscal Year Funding Amount
$35,507
Number of full time equivalents funded
0.54
Project Overview

The St. Cloud Waste Water Treatment Facility (SCWWTF) is currently conducting long term planning for future biosolids management. The most likely path forward includes dewatering of the digested biosolids, which will produce a supernatant stream with significant phosphorus and ammonia loads that would be returned to the liquids treatment portion of the WWTF. Returning these nutrient loads to the liquids train would result in increases to effluent concentrations, increases in power consumption, or both.

The SCWWTF will collect and analyze the nutrient stream in order to develop a mass balance of phosphorus throughout the system. The results will be used to determine the successful return of nutrient reduced supernatant such that liquid effluent discharge to the receiving waters will not be compromised. It is hypothesized that results will be transferable to similar treatment facilities.

Project Manager
First Name
City
Last Name
of St. Cloud
Organization Name
Saint Cloud, City of
Street Address
400 Second Street South
City
St. Cloud
State
MN
Zip Code
56301
Phone
(320) 650-2812