Effect of recycle on a two-phase high-rate anaerobic wastewater treatment system

Romli M., Greenfield P.F. and Lee P.L. (1994) Effect of recycle on a two-phase high-rate anaerobic wastewater treatment system. Water Research, 28 2: 475-482. doi:10.1016/0043-1354(94)90285-2


Author Romli M.
Greenfield P.F.
Lee P.L.
Title Effect of recycle on a two-phase high-rate anaerobic wastewater treatment system
Journal name Water Research   Check publisher's open access policy
ISSN 0043-1354
Publication date 1994-01-01
Sub-type Article (original research)
DOI 10.1016/0043-1354(94)90285-2
Volume 28
Issue 2
Start page 475
End page 482
Total pages 8
Subject 1904 Performing Arts and Creative Writing
Abstract The overall performance of a two-phase anaerobic wastewater treatment system was determined as a function of the extent of recycle of the effluent from the methanogenic reactor to the acidification reactor. The system consisted of a well mixed continuous reactor as the acidification stage, which was controlled at pH 6 by automatic addition of caustic soda, and a fluidized sand bed reactor for the methanogenic stage, which was left uncontrolled. The results showed that the introduction of recycle could minimize the total operational costs of treatment due mainly to a considerable saving in alkali addition. The results confirmed earlier model predictions. The introduction of recycle acidified the methanogenic reactor, thereby removing dissolved carbon dioxide to the gas phase; this reduction in the concentration of weak acids was the principal cause of the decrease in the caustic consumption. The effects of the recycle rate on other operating variables such as effluent pH and COD, biomass loss and methane content of the exit gas were also assessed.
Keyword acidification reactor
methanogenic
recycle
two-phase high-rate anaerobic treatment
Q-Index Code C1
Q-Index Status Provisional Code
Institutional Status Unknown

Document type: Journal Article
Sub-type: Article (original research)
Collection: Scopus Import
 
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Created: Tue, 28 Jun 2016, 16:59:41 EST by System User