Effect of various design and operation parameters on performance of pilot-scale Sludge Drying Reed Beds

Alexandros Stefanakis, Vassilios Tsihrintzis

Research output: Contribution to journalArticle

Abstract

Thirteen pilot-scale Sludge Drying Reed Bed units have been constructed and operated under various design and operational characteristics. All the beds included a cobbles bottom layer, where perforated PVC aeration tubes were placed. One bed did not contain aeration tubes. Two gravel layers were placed above the cobbles layer. The setup included planted beds with common reeds and control units. Three sludge loading rates were examined: 30, 60 and 75 kg dm/m2/yr. The dewatering efficiency of the planted units exceeded 95% volume reduction. The final dry matter content varied between 50 and 64%, depending on the applied SLR. Mineralization of the residual sludge also took place. VS content of the planted units decreased up to 20%, while nutrient concentration was also reduced. The presence of reeds, aeration tubes and a fine-grained material improved the system efficiency, while the material composition did not have any effect on efficiency. Moreover, the units were able to treat sludge with high concentration of Cr.
Original languageEnglish
Pages (from-to)65-78
Number of pages14
JournalEcological Engineering
Volume38
Issue number1
DOIs
Publication statusPublished - 31 Jan 2012

Fingerprint

sludge
aeration
satellite laser ranging
dewatering
dry matter
gravel
mineralization
effect
drying
parameter
reed
nutrient
material

Keywords

  • Sludge treatment wetlands
  • Dewatering
  • Mineralization
  • Sludge loading rate
  • Resting period
  • Vegetation
  • Porous media
  • Aeration
  • Nutrients
  • Chromium

Cite this

Stefanakis, Alexandros ; Tsihrintzis, Vassilios. / Effect of various design and operation parameters on performance of pilot-scale Sludge Drying Reed Beds. In: Ecological Engineering. 2012 ; Vol. 38, No. 1. pp. 65-78.
@article{5d5f75beea824b4a8bf8fccbf1dd3c3b,
title = "Effect of various design and operation parameters on performance of pilot-scale Sludge Drying Reed Beds",
abstract = "Thirteen pilot-scale Sludge Drying Reed Bed units have been constructed and operated under various design and operational characteristics. All the beds included a cobbles bottom layer, where perforated PVC aeration tubes were placed. One bed did not contain aeration tubes. Two gravel layers were placed above the cobbles layer. The setup included planted beds with common reeds and control units. Three sludge loading rates were examined: 30, 60 and 75 kg dm/m2/yr. The dewatering efficiency of the planted units exceeded 95{\%} volume reduction. The final dry matter content varied between 50 and 64{\%}, depending on the applied SLR. Mineralization of the residual sludge also took place. VS content of the planted units decreased up to 20{\%}, while nutrient concentration was also reduced. The presence of reeds, aeration tubes and a fine-grained material improved the system efficiency, while the material composition did not have any effect on efficiency. Moreover, the units were able to treat sludge with high concentration of Cr.",
keywords = "Sludge treatment wetlands, Dewatering, Mineralization, Sludge loading rate, Resting period, Vegetation, Porous media, Aeration, Nutrients, Chromium",
author = "Alexandros Stefanakis and Vassilios Tsihrintzis",
year = "2012",
month = "1",
day = "31",
doi = "10.1016/j.ecoleng.2011.10.003",
language = "English",
volume = "38",
pages = "65--78",
journal = "Ecological Engineering",
issn = "0925-8574",
number = "1",

}

Effect of various design and operation parameters on performance of pilot-scale Sludge Drying Reed Beds. / Stefanakis, Alexandros; Tsihrintzis, Vassilios.

In: Ecological Engineering, Vol. 38, No. 1, 31.01.2012, p. 65-78.

Research output: Contribution to journalArticle

TY - JOUR

T1 - Effect of various design and operation parameters on performance of pilot-scale Sludge Drying Reed Beds

AU - Stefanakis, Alexandros

AU - Tsihrintzis, Vassilios

PY - 2012/1/31

Y1 - 2012/1/31

N2 - Thirteen pilot-scale Sludge Drying Reed Bed units have been constructed and operated under various design and operational characteristics. All the beds included a cobbles bottom layer, where perforated PVC aeration tubes were placed. One bed did not contain aeration tubes. Two gravel layers were placed above the cobbles layer. The setup included planted beds with common reeds and control units. Three sludge loading rates were examined: 30, 60 and 75 kg dm/m2/yr. The dewatering efficiency of the planted units exceeded 95% volume reduction. The final dry matter content varied between 50 and 64%, depending on the applied SLR. Mineralization of the residual sludge also took place. VS content of the planted units decreased up to 20%, while nutrient concentration was also reduced. The presence of reeds, aeration tubes and a fine-grained material improved the system efficiency, while the material composition did not have any effect on efficiency. Moreover, the units were able to treat sludge with high concentration of Cr.

AB - Thirteen pilot-scale Sludge Drying Reed Bed units have been constructed and operated under various design and operational characteristics. All the beds included a cobbles bottom layer, where perforated PVC aeration tubes were placed. One bed did not contain aeration tubes. Two gravel layers were placed above the cobbles layer. The setup included planted beds with common reeds and control units. Three sludge loading rates were examined: 30, 60 and 75 kg dm/m2/yr. The dewatering efficiency of the planted units exceeded 95% volume reduction. The final dry matter content varied between 50 and 64%, depending on the applied SLR. Mineralization of the residual sludge also took place. VS content of the planted units decreased up to 20%, while nutrient concentration was also reduced. The presence of reeds, aeration tubes and a fine-grained material improved the system efficiency, while the material composition did not have any effect on efficiency. Moreover, the units were able to treat sludge with high concentration of Cr.

KW - Sludge treatment wetlands

KW - Dewatering

KW - Mineralization

KW - Sludge loading rate

KW - Resting period

KW - Vegetation

KW - Porous media

KW - Aeration

KW - Nutrients

KW - Chromium

U2 - 10.1016/j.ecoleng.2011.10.003

DO - 10.1016/j.ecoleng.2011.10.003

M3 - Article

VL - 38

SP - 65

EP - 78

JO - Ecological Engineering

JF - Ecological Engineering

SN - 0925-8574

IS - 1

ER -