Enzymatic analysis in bank filtration sites as a tool for assessing biological clogging — A column study

Martins, Marcelle; Lunardi, Samuel; Puhl, Vanessa de Andrade; Pizzolatti, Bruno Segalla; Soares, Marcus

doi:10.1016/j.jwpe.2021.102375

Cited by 3 publications

(2 citation statements)

References 40 publications

Supporting

Mentioning

Contrasting

Order By: Relevance

“…The gradual contribution of the deeper layers to head loss indicates an increasing internal clogging, which may result in a shorter useful life of the system because surface cleaning by scraping does not seem to be effective in the long term in this scenario. Internal clogging does not present a substantial reduction of hydraulic conductivity in comparison with surface clogging (Martins et al, 2021), reflecting on longer filtration runs.…”

Section: Resultsmentioning

confidence: 99%

Pre‐filtration followed by slow double‐layered filtration: Media clogging effects on hydraulic aspects and water quality

Lunardi

Martins

Pizzolatti

et al. 2022

Water Environment Research

Self Cite

View full text Add to dashboard Cite

This study evaluated clogging effects on head loss and water quality in sand prefiltration columns, followed by innovative double-layered slow-filter filtration technology using anthracite coal and sand. The study was divided into two phases. Phase 1 (filtration rate 11 m 3 /m 2 Ád) had a layout of a pre-filter (PF) system followed by a slow filter (SF). In Phase 2 (filtration rates of 5.5 and 11 m 3 /m 2 Ád), two PF systems (PF1 and PF2) followed by SFs (SF1 and SF2) were monitored, be differed only by filtration rate. Phase 1 presents a mean turbidity removal of 45.6% in PF and 23.9% in SF. PF presented a lower head loss in the superficial layers of the filter media, whereas SF presented a more important contribution in the deeper layers of the bed. In Phase 2, the mean results obtained for turbidity removal in PF1 and SF1 were 84.7% and 22.4%, in that order. PF2 and SF2 promoted mean reductions of 84.5% and 22.0%, respectively. Greater clogging is observed in the PF's surface layers, whereas the SFs dissipate greater clogging with depth. Filtration rates and water quality were similar in filter media of different compositions. Practitioner Points• Double-layer filters show better use of the porous media in depth.• Different materials produce different forms of clogging. • Higher filtration rates increase the number of pre-filter and slow filter runs.

show abstract

Section: Resultsmentioning

confidence: 99%

Pre‐filtration followed by slow double‐layered filtration: Media clogging effects on hydraulic aspects and water quality

Lunardi

Martins

Pizzolatti

et al. 2022

Water Environment Research

Self Cite

View full text Add to dashboard Cite

show abstract

“…The clogging can affect the permeability of the streambed and aquifer media, and further change the hydrodynamic conditions in the hyporheic zone and infiltration areas [20,21]. The clogging may not only occur on the surface of streambed med (external clogging), but also within porous media (internal clogging) [22][23][24]. Among them, external clogging is caused by the deposition of suspended solids, whereas internal clogging is due to the intrusion of smaller particles or dissolved solids in the pores of the porous media.…”

Section: Introductionmentioning

confidence: 99%

The Impact of Clogging Issues at a Riverbank Filtration Site in the Lalin River, NE, China: A Laboratory Column Study

Liu

Chen

et al. 2022

Sustainability

View full text Add to dashboard Cite

Although riverbank filtration (RBF) has been widely applied in China, the managers do not pay enough attention to the inevitable clogging issues during continuous RBF operation. The RBF site, which is located near the Lalin River, northeastern China, was selected as the study area, and the laboratory column experiments were used to simulate the RBF process and further investigate the physical and chemical clogging. The removal of turbidity (59.4–95.1%), COD (21.9–71.7%), NH4+ (10.9–39.4%), Fe (18.5–64.8%), and Mn (19.8–71.7%) demonstrated the water quality improvement by RBF. Whereas, the significant decrease in permeability (39.6–88.2%) also indicated that the clogging issues could not be ignored during RBF. Among them, the physical clogging-dominated area, chemical clogging-dominated area, and the transition zone were located at 0–12.5%, 37.5–100%, and 12.5–37.5% of the infiltration pathway, respectively. Moreover, the concentration of suspended particle materials, mean size of riverbed sediments, and aquifer media are the major impact factors for physical clogging; the precipitation of soluble constituents and redox reaction and other hydrochemical processes were the major impact factors for chemical clogging. The conclusion of this study can contribute to managers alleviating the clogging issues and improving the effectiveness of the sustainable operation in the local RBF system.

show abstract

Enzymatic analysis in household intermittent slow sand filters as a tool for assessing biological clogging

Puhl,

Martins,

Lunardi

et al. 2023

Journal of Water Process Engineering

View full text Add to dashboard Cite

Enzymatic analysis in bank filtration sites as a tool for assessing biological clogging — A column study

Cited by 3 publications

References 40 publications

Pre‐filtration followed by slow double‐layered filtration: Media clogging effects on hydraulic aspects and water quality

Pre‐filtration followed by slow double‐layered filtration: Media clogging effects on hydraulic aspects and water quality

The Impact of Clogging Issues at a Riverbank Filtration Site in the Lalin River, NE, China: A Laboratory Column Study

Enzymatic analysis in household intermittent slow sand filters as a tool for assessing biological clogging

Contact Info

Product

Resources

About