Concentrate management by deep well injection at North County Regional Water Treatment Plant in Naples, Collier County, FL Conference

Lee, M, Li, W, Tansel, B et al. (2010). Concentrate management by deep well injection at North County Regional Water Treatment Plant in Naples, Collier County, FL . 3519-3528. 10.1061/41114(371)359

cited authors

  • Lee, M; Li, W; Tansel, B; Brogdon, H; Mattausch, P

authors

abstract

  • The North County Regional Water Treatment Plant (NCRWTP) is one of two water treatment plants in the Collier County Public Water Supply System. The NCRWTP uses both nanofiltration (NF) and reverse osmosis (RO) treatment processes to produce drinking water for residential, commercial, industrial, and institutional uses. Groundwater is the sole source of raw water for drinking water production. The treatment plant is capable of treating 24.8 million gallons of raw water per day (MGD) for an overall potable water production rate of 20 MGD. Concentrate is pumped into a deep well injection system consisting of two Class I injection wells. Well No. 1 is 3,330 ft deep and Well No. 2 is 3,210 ft deep. The wells have been retrofitted with fiberglass injection tubing (corrosion resistant) and a cement-filled annulus (leakage prevention). Analysis of the monitoring wells and the injected concentrate stream include the following: pH, temperature, conductivity, bicarbonate, chloride, calcium, magnesium, iron, potassium, sulfate, total dissolved solids, total Kjeldahl nitrogen, sodium, fluoride, gross alpha and Radium 226/228. Monitoring results confirm that the injection wells have been well operated and no contamination of other aquifers or groundwater source has been discovered. © 2010 ASCE.

publication date

  • August 2, 2010

Digital Object Identifier (DOI)

International Standard Book Number (ISBN) 13

start page

  • 3519

end page

  • 3528