Performance of an ecologically-engineered multistage acid mine drainage and municipal wastewater passive co-treatment system

W. H. Strosnider, B. K. Winfrey, R. W. Nairn

Research output: Chapter in Book/Report/Conference proceedingConference PaperResearchpeer-review

2 Citations (Scopus)

Abstract

A laboratory-scale, four-stage continuous flow reactor system was constructed to test the viability of high-strength acid mine drainage (AMD) and municipal wastewater (MWW) passive co-treatment. Synthetic AMD of pH 2.6 and acidity of 1870 mg/L as CaCO 3 equivalent containing a mean 46, 0.25, 2.0, 290, 55, 1.2 and 390 mg/L of Al, As, Cd, Fe, Mn, Pb and Zn, respectively, was mixed at a 1:2 ratio with raw MWW from the City of Norman, Oklahoma and introduced to the system which had a total residence time of 6.6 days. During the 135-d experiment, dissolved Al, As, Cd, Fe, Mn, Pb and Zn concentrations were consistently decreased by 99.8, 87.8, 97.7, 99.8, 13.9, 87.9 and 73.4 %, respectively, pH increased to 6.8 ±0.1, and net-alkaline effluent produced. At a wasting rate of 0.69 % of total influent flow, the system produced sludge with Al, As, Cd, Cr, Cu, Fe, Pb and Zn at least an order of magnitude greater than the theoretical influent mix, which presents a possible environmental liability if not sustainably recovered or disposed. These results indicate that passive co-treatment is a promising approach that can be optimized and applied to improve water quality with minimal use of fossil fuels and refined materials.

Original languageEnglish
Title of host publication26th Annual Meetings of the American Society of Mining and Reclamation and 11th Billings Land Reclamation Symposium 2009
Pages1391-1411
Number of pages21
Volume3
Publication statusPublished - 2009
Externally publishedYes
EventJoint Conference of 26th Annual Meetings of the American Society of Mining and Reclamation and 11th Billings Land Reclamation Symposium 2009 - Billings, United States of America
Duration: 30 May 20095 Jun 2009

Conference

ConferenceJoint Conference of 26th Annual Meetings of the American Society of Mining and Reclamation and 11th Billings Land Reclamation Symposium 2009
CountryUnited States of America
CityBillings
Period30/05/095/06/09

Keywords

  • Aluminum
  • Aqueous geochemistry
  • Arsenic
  • Cadmium
  • Chromium
  • Iron
  • Lead
  • Nickel
  • Sewage
  • Water quality
  • Zinc

Cite this

Strosnider, W. H., Winfrey, B. K., & Nairn, R. W. (2009). Performance of an ecologically-engineered multistage acid mine drainage and municipal wastewater passive co-treatment system. In 26th Annual Meetings of the American Society of Mining and Reclamation and 11th Billings Land Reclamation Symposium 2009 (Vol. 3, pp. 1391-1411)