Specifications include, but are not limited to: 1) Base bid is for liquid polymer that is compatible with the Papillion Creek’s WRRF mixing equipment. The polymer should be of a grade suitable for municipal wastewater treatment sludge dewatering applications for a trickling filter plant.; 2) Approximately 62,500 gallons of liquid polymer must be supplied to the Papillion Creek Wastewater Treatment Plant. Polymer will delivered via Tanker truck. Receiving port is a 4” female cam lock fitting. Quantities are estimates and constitute no commitment on the part of the City.; 3) Each prospective supplier will be allowed to first Bench Test their polymers, then provide a bid for their selected polymer and finally conduct a Field Performance Test.; 4) City personnel will determine concentration in mixing tank and will determine dosage rates applied to belt filter presses. The maximum sludge feed rate is 180 gallons per minute per press.; 5) The City reserves the right to cancel the remaining testing if the chemical being used by the supplier causes serious problems in operation such as belt binding or cake inconsistencies.; 6) The City will provide current dewatering data if requested.; 7) The polymer must meet the following minimum requirements or the City may reject the supplier for failure to meet the performance test. ; • Cake solids of greater than 20%.; • Sludge cake dewatering rate greater than 8,000 lbs/hr.; 8) The City makes no guarantees on the consistency or characteristics of the wastewater sludge. The Papillion Creek WRRF is a trickling Filter plant with 8 mesophilic anaerobic digesters. Processing primary and secondary sludge’s. The equipment used to dewater sludge is Ashbrook-Hartley model K.P. belt presses.
