CLU-IN Home

U.S. EPA Contaminated Site Cleanup Information (CLU-IN)


U.S. Environmental Protection Agency
U.S. EPA Technology Innovation and Field Services Division

Search Result

LONG-TERM PERFORMANCE OF A UASB REACTOR TREATING ACID MINE DRAINAGE: EFFECTS OF SULFATE LOADING RATE, HYDRAULIC RETENTION TIME, AND COD/SO42- RATIO
Cunha, M.P., R.M. Ferraz, G.P. Sancinetti, and R.P. Rodriguez.
Biodegradation 30:47-58(2019)

A biological process using an upflow anaerobic sludge blanket (UASB) reactor to treat acid mine drainage with a short hydraulic retention time (HRT, 14-24 h) and lower organic matter input was evaluated over 739 days. The test had a 0.5-2.6 g/d sulfate loading rate (SLR), a 0.67-1.0 chemical oxygen demand (COD)/SO42- ratio, ethanol as the only electron donor, and a pH of 4.0. Neutral effluent pH was achieved throughout the time apart from operational modifications. The fully optimized conditions of the UASB reactor were set at an HRT of 16 h, SLR of 1.5 g SO42-/d, and a COD/SO42- ratio of 1.0.



The Technology Innovation News Survey welcomes your comments and suggestions, as well as information about errors for correction. Please contact Michael Adam of the U.S. EPA Office of Superfund Remediation and Technology Innovation at adam.michael@epa.gov or (703) 603-9915 with any comments, suggestions, or corrections.

Mention of non-EPA documents, presentations, or papers does not constitute a U.S. EPA endorsement of their contents, only an acknowledgment that they exist and may be relevant to the Technology Innovation News Survey audience.