@misc{10481/93036,
year = {2024},
month = {2},
url = {https://hdl.handle.net/10481/93036},
abstract = {A feasible and efficient implementation of an Fe-based chemically enhanced primary treatment (CEPT) in a large
conventional wastewater treatment plant (WWTP) was thoroughly evaluated. The influence of the velocity
gradient and hydraulic retention time in the coagulation and flocculation stages, as well as the coagulant (FeCl3)
dosage, were evaluated at lab-scale. Standard Jar Tests were performed to simulate CEPT, and the results were
compared with those obtained by primary settling without coagulant. The increase in FeCl3 dosage and flocculation
hydraulic retention time (HRTF) increased the primary settling COD removal capacity between 6.6% and
18.1%, highlighting its effect on the easily biodegradable COD fraction. The COD removal capacity increased up
to 16.8% when working with an HRTF of less than 4 min, facilitating CEPT direct application in conventional
WWTPs, avoiding the need to incorporate flocculation chamber, with a corresponding decrease in the associated
implementation cost. The presence of residual Fe in the primary settling effluent and an increase in the primary
sludge volume were the main drawbacks of the process. The coagulation and flocculation velocity gradients or
the coagulation hydraulic retention time did not significantly influence the process.},
organization = {Funding
for open access charge: University of Granada/CBUA},
publisher = {Elsevier},
keywords = {Chemically enhanced primary sedimentation},
keywords = {FeCl3 dosage},
keywords = {Flocculation hydraulic retention time},
title = {Direct application of chemically enhanced primary treatment in a municipal wastewater treatment plant: A case study},
doi = {10.1016/j.cherd.2024.02.039},
author = {Checa Fernández, A. and Ruiz Hernández, Luz Marina and Torres Marín, Jorge and Muñoz Ubina, A. and Pérez Pérez, Jorge Ignacio and Gómez Nieto, Miguel Ángel},
}