| File | |
| Title |
Biological Treatment of Formaldehyde by Activated Sludge
|
| Creator |
Nomotobori Takashi
Suyama Masumi
Tada Manabu
|
| Source Title |
Shimane journal of medical science
|
| Volume | 10 |
| Issue | 1 |
| Start Page | 9 |
| End Page | 18 |
| Journal Identifire |
ISSN 03865959
EISSN 24332410
|
| Descriptions |
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.
|
| Subjects | |
| Language |
eng
|
| Resource Type | departmental bulletin paper |
| Publisher |
Shimane Medical University
|
| Date of Issued | 1986-09-01 |
| Publish Type | Version of Record |
| Access Rights | open access |
| Relation |
[NCID] AA00841586
|
