Linked Life Data

19217714

Source:http://linkedlifedata.com/resource/pubmed/id/19217714

Statements in which the resource exists as a subject.
PredicateObject
rdf:type
lifeskim:mentions
pubmed:issue
1-3
pubmed:dateCreated
2009-5-26
pubmed:abstractText
In 1994, Madoni created the Sludge Biotic Index (SBI) based on the presence and abundance of certain key protozoan groups. The use of this index has become increasingly common in wastewater treatment plant control and its applicability has been demonstrated. In this study, we applied the SBI index to a pilot-scale membrane bioreactor equipped with polyvinylidenefluoride hollow fibre membranes (0.04 microm pore size). Two different sludge retention times (SRT)--25 and 35 days--were assayed, with a constant hydraulic retention time of 30h. Operational conditions for MBR cause the fragmentation of flocs which are broken down into small dissipated elements with abundant dispersed bacteria. This process determines protozoan composition and colonization of the activated sludge. Results of the experiment showed a constant predominance of small flagellates, carnivorous ciliated protozoa and rotifers, above all in assays with 35-day SRT, independently of effluent quality. However, continuous changes in microbiota were observed, with a clear tendency for the SBI to increase over time as the sludge became more stable. Therefore, although it was not possible to establish an association between SBI and effluent quality for MBR activated sludge, the stabilisation of the process may be related to SBI.
pubmed:language
eng
pubmed:journal
pubmed:citationSubset
IM
pubmed:chemical
pubmed:status
MEDLINE
pubmed:month
Aug
pubmed:issn
1873-3336
pubmed:author
pubmed:issnType
Electronic
pubmed:day
15
pubmed:volume
167
pubmed:owner
NLM
pubmed:authorsComplete
Y
pubmed:pagination
784-9
pubmed:meshHeading
pubmed:year
2009
pubmed:articleTitle
Applicability of the Sludge Biotic Index (SBI) for MBR activated sludge control.
pubmed:affiliation
Technologies for Water Management and Treatment Group, Department of Civil Engineering and Water Research Institute, University of Granada, Granada, Spain.
pubmed:publicationType
Journal Article, Research Support, Non-U.S. Gov't