Independence, MO

Engineer: Black & Veatch Permitted Plant Flow: 48 MGD Installation Date: 2005

The Courtney Bend Water Treatment Plant is located on the banks of the Missouri River and draws water from a total of 38 wells. The wells are located on the north and south sides of the river and the water is actually drawn from the Missouri River Alluvial Aquifer.

The City of Independence Water Department supplies water to approximately 250,000 people, including residents of Independence and 11 wholesale customers. Average daily production is about 27 MGD with a peak production day of 44 MGD set back in 2002.

One of 8 Solids Contact Clarifiers, 70 ft. diameter, rated at 6 MGD each. Quicklime storage silo is 14 ft. diameter x 90 ft. tall and stores 250 tons of quicklime.

Well field on the south side of the Missouri River.

Slurry Aging tank, Grit removal screen and the two rubber lined centrifugal slurry pumps for the loop delivery system.

The Slurry Aging tank stores 2 1/2 batches of slaked lime or about 1,000 gallons.

The grit is removed prior to the slurry entering the Slurry Aging tank using a 14 mesh screen deck. The Tekkem Slaker with it’s full 10 minutes of slaking, produces “clean” grit whereby Independence generates about one wheelbarrow of grit every 4-5 days.

The grit is used to make repairs to the non-paved driveways within the plant grounds. Grit from the other older 3 paste slakers is not “clean” and is disposed at a cost to the City based on current landfill tipping fees.

The original design included installing 2 lime slurry addition points on 2 of the existing solids contact clarifiers as shown in these photographs. However the design included the provisions to install 2 additional lime slurry addition points in 2 more existing solids contact clarifiers without the capital cost of one additional Tekkem Slaker. This System “expansion“ is scheduled to be completed sometime in 2008.

Each lime slurry dosing point consists of a air operated pinch valve and magnetic flow meter. Plant staff reports much more precise control of pH set points compared with their old gravity splitter box.

The piping for the loop system is a combination of schedule 80 PVC pipe for the straight runs and rubber lined, easily replaced, rubber hose for the long radius sweeps.

The “Old Way” gravity splitter box replaced with precise control by pinch valves and magnetic flow meters.

14 foot diameter by 90 foot tall silo ready for delivery to the Independence plant for installation and final assembly of the Tekkem System components by the contractor.