8.1. SR 03-18-2013 - Laserfiche WebLink

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SECTION 4.0 WASTEWATER TREATMENT FACILITY IMPROVEMENTS 4.1 General In the following paragraphs, several categories of alternatives are given general consideration. Potentially feasible alternatives will be further evaluated. Generally, alternative solutions include: 1) optimum operation and/or expansion of existing facilities; 2) regionalization; 3) construction of a new facility. 4.1.1. Optimum Operation/Expansion of Existing Facilities The existing facility has operated successfully at loads that have exceeded the current rated organic treatment capacity. The existing facility operations can be modified or expanded to meet the treatment levels required. 4.1.2. Regionalization This category includes the possibility of diverting wastewater from the City to a wastewater treatment facility of a nearby community. Due to the distance associated with regionalizing in comparison to the magnitude of the required plant expansion, regionalization was not considered feasible at this time. 4.1.3. Construction of a New Facility The current facility is a mechanical treatment facility with continuous discharge including a main lift station, mechanical screen, primary clarifiers, chemical feed, final clarifiers, sand filters, UV disinfection, and biosolids facilities. The plant has received upgrades over the years with the most recent upgrade done in 2005. Most of the plant components are in excellent condition. At this time, it is not feasible to abandon the existing treatment facility and construct a new facility as many of the unit processes are in good condition and can be utilized to meet the proposed design flows and loadings. The recommended improvements discussed are then based on optimization and expansion of the existing facility. City of Elk River—T12.104758 Page 16 Wastewater Treatment Facility Plan Prepared by Bolton&Menk,Inc.