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Departmental Item <br />INDIAN RIVER COUNTY, FLORIDA <br />DEPARTMENT OF UTILITY SERVICES <br />Date: May 10, 2019 <br />To: Jason E. Brown, County Administrator <br />From: Vincent Burke, P.E., Director of Utility Services <br />Through: Jennifer Hyde, Purchasing Manager <br />Prepared By: Terry Southard, Operations Manager, Utility Services <br />Rich Meckes, Wastewater Superintendent <br />Subject: West Regional Wastewater Treatment Facility Hydro Cleanse Installation and <br />Upgrades <br />BACKGROUND/ ANALYSIS: <br />Two Hydro International SlurryCup/Grit Snail units were installed at the West Regional Wastewater Facility <br />(WWTF) during a Facility Upgrade and rehab in 2010. The SlurryCup units received normal maintenance <br />and repair for the following eight years. When SlurryCup #2 failed in January of 2018, staff reached out to <br />Moss Kelly International (MKI Services), the local maintenance provider designated by manufacturer Hydro <br />International, for assistance and a repair estimate. SlurryCup #2 was inspected and determined to require <br />extensive repairs. MKI Services and Hydro International proposed an alternative to the rehab of SluryCup <br />#2, in the installation of a new technology GritClense unit at their cost as well as further evaluation of the <br />original SlurryCup unit#2. <br />On April 17, 2018, the County Administrator executed an agreement (MOU) for the purpose of temporarily <br />installing, running and testing a new Hydro International GritCleanse washing and dewatering system and a <br />thorough evaluation of SluryCup unit #2. During the week of May 21, 2018, the new GritCleanse unit was <br />installed by Hydro International, and side by side testing of the SlurryCup #1 and the GritCleanse unit <br />began in June of 2018. The SlurryCup and the GritCleanse were operated separately during the testing of <br />the units. The test results revealed that the GritCleanse unit produced a markedly cleaner and dryer grit, <br />resulting in an 80% Tess dumpster storage requirement. The significantly lower organic and water content <br />in the final product has saved money on the hauling of debris from the grit removal process. Previously, <br />dumpsters were emptied twice a month with the SlurryCup Unit #1 in operation and now once every 3-4 <br />months when using the GritCleanse unit. Other advantages realized are a significant decrease in odors due <br />to the reduced level of organic material in the final product, reduced maintenance requirements and <br />greater ease of operation due to the simplified design of the GritCleanse. <br />The final evaluation of the SlurryCup Unit #2 revealed that it would require a total rebuild, and the repair <br />cost would not be financially responsible, as the equipment cost of a new SlurryCup is $165,000.00, <br />excluding installation. <br />MKI Services has proposed to permanently install the Hydro GritCleanse Unit and upgrade the process. <br />MKI Services will remove the temporary unit, remove the existing concrete pads, install suitable pads for <br />C:\Users\Legistar\Appdata\Local\Temp\BCL Technologies\Easypdf 8\@BCL@A80D4E7C\@BCL@A80D4E7C.Doc Page 10 <br />