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Enhanced Stabilization of Digested Sludge During Long‐Term Storage in Anaerobic Lagoons
Author(s) -
Lukicheva Irina,
Pagilla Krishna,
Tian Guanglong,
Cox Albert,
Granato Thomas
Publication year - 2014
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 - 10.2175/106143013x13778144233936
Subject(s) - anaerobic digestion , anaerobic exercise , term (time) , environmental science , chemistry , pulp and paper industry , waste management , environmental engineering , environmental chemistry , biology , methane , engineering , physiology , physics , organic chemistry , quantum mechanics
The goal of this work was to study changes in anaerobically stored digested sludge under different lengths of storage time to evaluate the quality of final product biosolids. The analyses of collected data suggest the organic matter degradation occurrence in the anaerobic environment of the lagoon approximately within the first year. After that, the degradation becomes very slow, which is likely caused by unfavorable environmental conditions. The performance of lagoon aging of digested sludge was also compared to the performance of lagoon aging of anaerobically digested and dewatered sludge. It was concluded that both of these processes result in biosolids of comparative quality and that the former provides more economical solution to biosolids handling by eliminating the need for mechanical dewatering.