Related Experiment Video
Updated: Sep 6, 2025
15:19
Development of Sulfidogenic Sludge from Marine Sediments and Trichloroethylene Reduction in an Upflow Anaerobic Sludge Blanket Reactor
Published on: October 15, 2015
9.8K
Sludge Treatment Reed Bed under different climates: A review using meta-analysis.
Amir Gholipour1, Rita Fragoso2, Elizabeth Duarte1
1LEAF - Linking Landscape, Environment, Agriculture and Food, Instituto Superior de Agronomia (ISA), University of Lisbon, Tapada da Ajuda, 1349-017 Lisbon, Portugal.
The Science of the Total Environment
|June 30, 2022
Summary
Sludge Treatment Reed Beds (STRBs) are effective wastewater treatment systems. Earthworm-enhanced STRBs and Sludge Treatment Electro Wetlands (STEWs) show higher sludge reduction and lower accumulation rates across various climates.
Area of Science:
- Environmental Engineering
- Wastewater Treatment Technologies
- Ecological Engineering
Background:
- Sludge Treatment Reed Beds (STRBs) are established worldwide for sludge management.
- Existing knowledge on STRB technology and its climatic performance requires comprehensive appraisal.
- Meta-analysis (MA) is crucial for discerning performance patterns across diverse climatic conditions.
Purpose of the Study:
- To systematically review and appraise current knowledge on STRB technology.
- To identify and analyze climatic patterns influencing STRB performance through meta-analysis.
- To compare different STRB configurations, including earthworm-enhanced systems and Sludge Treatment Electro Wetlands (STEWs).
Main Methods:
- Systematic literature search of Google Scholar, Scopus, and Web of Science databases up to December 2021.
- Inclusion of 73 peer-reviewed studies meeting review objectives.
- Meta-analysis of operational parameters (Sludge Loading Rate, Dry Solid content) and system efficiency across Temperate (Type 1 & 2) and Tropical climates.
Main Results:
- Identified four STRB classifications: typical STRB, earthworm STRB, STEW, and earthworm STEW.
- Determined average Sludge Loading Rates (SLRs) of 50, 70, and 101 Kg.DM.m-2.year-1 for Temperate Type 1, Temperate Type 2, and Tropical climates, respectively.
- Observed 60% higher sludge volume reduction and 2 cm/year lower accumulated sludge height in earthworm STRBs/STEWs compared to typical STRBs (6 cm/year in Tropical climates).
Conclusions:
- STRB technology performance is significantly influenced by climatic factors and system configuration.
- Earthworm-enhanced STRBs and STEWs offer superior sludge reduction and management efficiency.
- Further research is needed for Arid and Polar climates due to limited available data.
