Linked Life Data

19545013

Source:http://linkedlifedata.com/resource/pubmed/id/19545013

Statements in which the resource exists as a subject.
PredicateObject
rdf:type
lifeskim:mentions
pubmed:issue
4
pubmed:dateCreated
2009-6-23
pubmed:abstractText
The secondary effluent from a municipal sewage treatment plant was fractionated into three parts: the dissolved, the near-colloidal and the suspended. The variation of each composition was investigated individually during winter, spring and summer. The fractionation study revealed that the dissolved COD and DOC accounted for 78.2%-86.5% of total COD and 82.6%-86.6% of TOC, respectively. The molecular weight distribution (MWD) of the secondary effluent indicated that the organics with molecular weight (MW) < 1000 accounted for 56.3%-62.8% of total organics. The organic components constituted 75.54%-89.93 % of the mixture of suspended and near-colloidal matter. The size distribution of the particles showed that the particles ranging from 2.00 to 6.84 microm constituted more than 80% of the total particles. The secondary effluent was relatively poor biodegradable with only 0.195-0.283 of BOD5/COD ratio and 0.156-0.26 of BDOC/DOC ratio. The GC/MS analysis detected 43 and 26 kinds of compounds in dissolved and in suspended forms, respectively, and most of them are bio-refractory according to the functional groups of the chemicals. Biodegradability of the secondary effluent should be enhanced for improving the sequential biochemical removal efficiency for the organic matter.
pubmed:language
chi
pubmed:journal
pubmed:citationSubset
IM
pubmed:chemical
pubmed:status
MEDLINE
pubmed:month
Apr
pubmed:issn
0250-3301
pubmed:author
pubmed:issnType
Print
pubmed:day
15
pubmed:volume
30
pubmed:owner
NLM
pubmed:authorsComplete
Y
pubmed:pagination
1099-104
pubmed:meshHeading
pubmed:year
2009
pubmed:articleTitle
[Analysis of the secondary effluent of municipal wastewater in north China].
pubmed:affiliation
School of Municipal and Environmental Engineering, Harbin Institute of Technology, Harbin 150090, China. wshutao@yahoo.com.cn
pubmed:publicationType
Journal Article, English Abstract, Research Support, Non-U.S. Gov't