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The original item was published from 1/3/2022 11:11:27 AM to 1/12/2022 6:05:01 AM.

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Press Release

Posted on: January 4, 2022

[ARCHIVED] Water Wisdom #34

Tuesday's Water Wisdom



For Immediate Release:  1-4-2022

For more information contact:

 

Keri Navratil

712-732-8000

navratil@stormlake.org

 

Tuesday’s Water Wisdom

 

Storm Lake Water Wisdom #34 brought to you this fine Tuesday from the City of Storm Lake involves Internal Reuse.

 

This installment of Water Wisdom continues the exploration of water efficiency by looking into potential areas for water conservation by internal reuse. Internal reuse is the practice of reclaiming water already used for one purpose and using the water for a second purpose at the same location. A very simple example of this is the reuse of household gray water to irrigate plants. The major challenge for water reuse on a large scale is the large capital investment in infrastructure to convey the water from one area to another. Internal reuse can mitigate these costs. 

 

Internal water reuse at the water treatment plant is already occurring. Water that is used to backwash filters at the water treatment plant is conveyed to a backwash holding tank and then reprocessed through the treatment train to be sent out to the distribution system as finished water for customer use. The same backwash holding tank also collects the water from the lime pressing system as well as the supernatant from the lime thickener to be treated for use. This constitutes all process water that is used in the treatment of water so nearly zero water is lost between the wells and discharge of finished water to the distribution system. 

 

Potential for water reuse also exists at the wastewater treatment plant and is quite common at larger wastewater treatment facilities. This method of reuse is accomplished by capturing a portion of the treated wastewater effluent and further treating it to the appropriate level of quality for the intended purpose(s). The simplest method to accomplish this is filtration which would produce a non-potable water suitable for a variety of uses at the wastewater treatment plant. Areas in which the filtered, non-potable water could be utilized would be biosolids processing, pressurized water for backflushing pipes, filling jet trucks for sewer cleaning, elutriation water, as well as other purposes. When the wastewater effluent is recycled and used, the need for potable water is reduced. These and other concepts will be studied for feasibility as improvements are made to the wastewater treatment plant in the coming years. For more information on water reuse please visit: www.epa.gov

More tips regarding voluntary water conservations measures and tips for reducing water consumption will follow each Tuesday.  Ensuring wise use of our water resources is in the best interest of the community.

 

Being Storm Lake Proud is not one day, one week, one month, or one event.  Being Storm Lake Proud is a magnificent lifestyle!   More information about the City of Storm Lake can be found on the city’s website at www.stormlake.org.

 

 

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