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File #: 22-0843    Version: 1 Name: 6/21/22 WWTSU 2022 Polymer
Type: Resolution Status: Passed
File created: 6/21/2022 In control: City Council
On agenda: 6/21/2022 Final action: 6/21/2022
Enactment date: 6/21/2022 Enactment #: R-22-197
Title: Resolution to Approve the Purchase of Polymer from Solenis LLC for Centrifuges at the Wastewater Treatment Plant, ITB No. 4714 ($297,000/year, Estimated)
Attachments: 1. ITB_4714_BidTab.pdf, 2. 2022 Solenis polymer bid.pdf
Title
Resolution to Approve the Purchase of Polymer from Solenis LLC for Centrifuges at the Wastewater Treatment Plant, ITB No. 4714 ($297,000/year, Estimated)
Memorandum
Your approval is requested to authorize the purchase of polymer from Solenis LLC for the City's Wastewater Treatment Plant (WWTP) at the unit price of $1.32/pound, at an estimated quantity of 225,000 pounds and total estimated cost of $297,000 for FY23.

The WWTP utilizes two gravity belt thickeners year-round to thicken biosolids from the secondary (biological) treatment process and three centrifuges during the winter months to dewater biosolids for disposal in a landfill. Biosolids must be conditioned with polymers to ensure functionality and optimal performance of the gravity belt thickeners and centrifuges, which makes the biosolids suitable for beneficial reuse by land application during the non-winter months and for landfill disposal during the winter months.

Plant staff has worked with several vendors to test various polymers to ascertain characteristics best suited to the WWTP's biosolids thickening and dewatering equipment. After testing and deciding performance requirements, staff advertised for two specific polymers under invitation to bid, ITB No. 4714: SNF Polydyne, Clarifloc CE-1540 polymer and BASF Corp., Zetag 8846FS (US) polymer. Either of the two polymers could be used in both the gravity belt thickeners and the dewatering centrifuges. Therefore, pricing was requested for the same two polymers under ITB No. 4714 with pricing being firm for one year.

The following suppliers submitted a bid in response to ITB No. 4714:
Polydyne, Inc.
* Clarifloc CE-1540.............$1.50/pound, delivered
Solenis LLC
* Zetag 8846FS (US) .........$1.32/pound, delivered

Staff reviewed the bids, compared to ITB No. 4714 specifications and recommends that Solenis LLC be approved to supply polymer at the WWTP for FY23.

Additionally, it is recommended that the agreement be extended...

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