Physico‐chemical characteristics and biodegradability of primary effluent and particulate matter removed by microscreens

In this study, the physical, chemical, and biological characteristics of raw wastewater were compared with the liquid and solid streams generated by a primary clarifier (PC), a rotating belt filter (RBF, 350 μm), and a drum filter (DF, 60 μm) and series (SER) combination of an RBF with a PC or a DF...

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Bibliographic Details
Published in:Water environment research 2023-04, Vol.95 (4), p.e10854-n/a
Main Authors: Alizadeh, Sanaz, Chowdhury, Pankaj, Ghodsi, Vahid, Giaccherini, Francesca, Sarathy, Siva, Santoro, Domenico, Comeau, Yves
Format: Article
Language:English
Subjects:
Belt filters
Biodegradability
Biodegradation
Chemical oxygen demand
Clarifiers
Configurations
Design criteria
Drum filters
Effluents
Fractionation
Influents
Methane
micro‐sieving
Organic matter
organic matter recovery
Oxygen
Oxygen requirement
Particulate Matter
primary treatment
Raw wastewater
Resource recovery
Retrofitting
Rotation
Sewage - chemistry
Sludge
Solid suspensions
Suspended particulate matter
Total suspended solids
Volatile solids
Waste Disposal, Fluid - methods
Wastewater
Wastewater composition
Water resources
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Summary:In this study, the physical, chemical, and biological characteristics of raw wastewater were compared with the liquid and solid streams generated by a primary clarifier (PC), a rotating belt filter (RBF, 350 μm), and a drum filter (DF, 60 μm) and series (SER) combination of an RBF with a PC or a DF using pilot‐scale primary treatment units. The RBF removed about 36% of the influent total suspended solids. The DF and PC yielded an influent total suspended solid removal of 47% to 55% in both individual (parallel) and SER configurations. The size fractionation and chemical characterizations of the liquid fractions indicated a significant change in the wastewater composition in both filter configurations with no variation in the biodegradability of liquid fractions. The solids recovered by RBF had a higher total solids (TS) concentration and a higher volatile solids (VS) content (0.92 g VS/g TS) than that of DF and PC treatments (0.58 to 0.84 g VS/g TS). DF and PC sludge demonstrated a higher biodegradability rate (k1; 0.11 d−1 
ISSN:1061-4303
1554-7531
DOI:10.1002/wer.10854