Publication detail

Laboratory Determination of Selected Properties of Activated and Return Activated Sludge

HOUDKOVÁ, L.

Original Title

Laboratory Determination of Selected Properties of Activated and Return Activated Sludge

English Title

Laboratory Determination of Selected Properties of Activated and Return Activated Sludge

Type

journal article - other

Language

en

Original Abstract

Results are presented from laboratory measurements of viscosity and density of activated and return activated sludge. Solubility of oxygen in sludge liquor was measured and results were compared to solubility of oxygen in pure water. Viscosity measurements show that sludge containing up to 1% dry solids can be considered a Bingham fluid and sludge with dry solids content above 1% should be described using the Herschley-Buckley model. Sludge density is only slightly higher than water density and with increasing dry solids content increases negligibly. The amount of air dissolved in sludge liquor can be calculated using Henry's Law constants for water because the solubility of oxygen in water and sludge liquor differs minimally.

English abstract

Results are presented from laboratory measurements of viscosity and density of activated and return activated sludge. Solubility of oxygen in sludge liquor was measured and results were compared to solubility of oxygen in pure water. Viscosity measurements show that sludge containing up to 1% dry solids can be considered a Bingham fluid and sludge with dry solids content above 1% should be described using the Herschley-Buckley model. Sludge density is only slightly higher than water density and with increasing dry solids content increases negligibly. The amount of air dissolved in sludge liquor can be calculated using Henry's Law constants for water because the solubility of oxygen in water and sludge liquor differs minimally.

Keywords

sewage sludge, density, viscosity, flotation, oxygen solubility

RIV year

2013

Released

01.04.2013

Publisher

DEStech Publications, Inc.

Location

Lancaster, USA

Pages from

77

Pages to

84

Pages count

7

Documents

BibTex


@article{BUT100158,
  author="Lucie {Houdková}",
  title="Laboratory Determination of Selected Properties of Activated and Return Activated Sludge",
  annote="Results are presented from laboratory measurements of viscosity and density of activated and return activated sludge. Solubility of oxygen in sludge liquor was measured and results were compared to solubility of oxygen in pure water. Viscosity measurements show that sludge containing up to 1% dry solids can be considered a Bingham fluid and sludge with dry solids content above 1% should be described using the Herschley-Buckley model. Sludge density is only slightly higher than water density and with increasing dry solids content increases negligibly. The amount of air dissolved in sludge liquor can be calculated using Henry's Law constants for water because the solubility of oxygen in water and sludge liquor differs minimally.",
  address="DEStech Publications, Inc.",
  chapter="100158",
  institution="DEStech Publications, Inc.",
  number="2",
  volume="10",
  year="2013",
  month="april",
  pages="77--84",
  publisher="DEStech Publications, Inc.",
  type="journal article - other"
}