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Inorganic solids development in a pilot‐scale anaerobic reactor treating municipal solid waste landfill leachate
Author(s) -
Keenan Peter J.,
Iza Jon,
Switzenbaum Michael S.
Publication year - 1993
Publication title -
water environment research
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.356
H-Index - 73
eISSN - 1554-7531
pISSN - 1061-4303
DOI - 10.2175/wer.65.2.11
Subject(s) - leachate , chemical oxygen demand , municipal solid waste , total dissolved solids , waste management , environmental science , total suspended solids , suspended solids , biochemical oxygen demand , anaerobic exercise , volatile suspended solids , waste treatment , bioreactor , environmental engineering , pulp and paper industry , wastewater , chemistry , engineering , physiology , organic chemistry , biology
A 30‐L hybrid upflow anaerobic sludge bed filter (U ASBF) reactor was operated for 9 months on‐site at a municipal solid waste landfill in western Massachusetts. Total chemical oxygen demand (COD) removals exceeded 85% at organic loading rates as great as 10 kg/m 3 ·d. However, periodic monitoring of sludge profiles in the unpacked region indicated that the granular sludge bed was becoming compacted and mineralized. After 9 months of operation, total solids concentrations were approximately 450 g/kg, with approximately 80% of the total solids being fixed. Excessive inorganic scale accumulation on the interior reactor surfaces resulted in operational problems, and forced the eventual shutdown of the reactor. Evidence of reduced sludge activity resulting from the presence of metal precipitates indicates that pretreatment for metals removal is necessary prior to anaerobic treatment.