Properties of Sludge Produced From the Pressurized Wastewater Treatment Process

Ali BERKTAY

Article Details

Properties of Sludge Produced From the Pressurized Wastewater Treatment Process

Authors:

Ali BERKTAY

Publisher:

TUBITAK

Journal:

Turkish Journal of Engineering and Environmental Sciences 1998 Vol.22 Issue 5, pp.377-386

Document Type:

Article

Publication Date:

4/1998

Document Language:

Turkish

Document ID (Org No.):

2000745374

Frequency:

Tri-annual

eISSN:

1303-6157

pISSN:

1300-0160

Abstract:

 

The aim of this study was to investigate the effect of  pressure on settleability and filterability of the sludge produced  from a pressurized biological wastewater treatment unit in comparison  with an equivalent unit held at atmospheric pressure but otherwise  operating under identical conditions.  The specific sludge volume  index (SSVI) and the specific resistance to filtration (r) are  described as standard parameters to expresss the sludge settleability  and filterability properties.  For the sludge from the pressurized unit, the combination of air  stripping and mechanical stirring produced SSVI results of as low as  60 ml/g and the specific resistance was discovered to be moderately  stable with a mean 51.9\times1012 m/kg at 49 kPa.  Investigations  filterability into sludge settleability and filterability revealed  that realistic settlement of the sludge from the pressurized unit  could only be achieved following aeration and stirring.  The  indications from filterability tests suggest that the pressurized unit  sludge may be more readily dewatered than that from the unit open to  atmosphere.

 

The aim of this study was to investigate the effect of  pressure on settleability and filterability of the sludge produced  from a pressurized biological wastewater treatment unit in comparison  with an equivalent unit held at atmospheric pressure but otherwise  operating under identical conditions.  The specific sludge volume  index (SSVI) and the specific resistance to filtration (r) are  described as standard parameters to expresss the sludge settleability  and filterability properties.  For the sludge from the pressurized unit, the combination of air  stripping and mechanical stirring produced SSVI results of as low as  60 ml/g and the specific resistance was discovered to be moderately  stable with a mean 51.9\times1012 m/kg at 49 kPa.  Investigations  filterability into sludge settleability and filterability revealed  that realistic settlement of the sludge from the pressurized unit  could only be achieved following aeration and stirring.  The  indications from filterability tests suggest that the pressurized unit  sludge may be more readily dewatered than that from the unit open to  atmosphere.

Article Details

Properties of Sludge Produced From the Pressurized Wastewater Treatment Process

Authors: Ali BERKTAY

Publisher: TUBITAK

Journal: Turkish Journal of Engineering and Environmental Sciences 1998 Vol.22 Issue 5, pp.377-386

Document Type: Article

Publication Date: 4/1998

Document Language: Turkish

Document ID (Org No.): 2000745374

Frequency: Tri-annual

eISSN: 1303-6157

pISSN: 1300-0160

Issues

Authors:

Ali BERKTAY

Publisher:

TUBITAK

Journal:

Turkish Journal of Engineering and Environmental Sciences 1998 Vol.22 Issue 5, pp.377-386

Document Type:

Article

Publication Date:

4/1998

Document Language:

Turkish

Document ID (Org No.):

2000745374

Frequency:

Tri-annual

eISSN:

1303-6157

pISSN:

1300-0160