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language
eng
Author
Nomotobori, Takashi
Suyama, Masumi
Tada, Manabu
Description
The effect of formaldehyde (HCHO) on activated sludge was investigated. More than 3.3mg/l of HCHO showed lag type toxicity for O_2 uptake of nonacclimated sludge. Acclimation studies for highly concentrated HCHO showed that activated sludge could remove 90% of 5,500mg/l HCHO at 40 hours. Changes in pH, COD, and sludge weight during HCHO removal were investigated. In glucose-containing medium, sludge weight increased. Oxidation of glucose and increase of sludge weight occurred when HCHO was removed more than 80% and pH raised to 5.5. Optimal pH for HCHO removal by acclimated sludge was 6. Those results suggest that activated sludge oxidizes HCHO but are not utilized as a carbon source; addition of a carbon source such as glucose is necessary for treatment of highly concentrated HCHO.
Subject
formadehyde
activated sludge
formalin waste  
Journal Title
Shimane journal of medical science
Volume
10
Issue
1
Start Page
9
End Page
18
ISSN
03865959
ISSN(Online)
24332410
Published Date
1986-09-01
NCID
AA00841586
Publisher Aalternative
Shimane Medical University
NII Type
Departmental Bulletin Paper
Format
PDF
Text Version
出版社版
OAI-PMH Set
Faculty of Medicine
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