Removal of Escherichia coli from domestic sewage using biological sand filters: Reduction effect and microbial community analysis

S Qian, R Hou, R Yuan, B Zhou, Z Chen… - Environmental Research, 2022 - Elsevier
The recycling of sewage is an economical option to solve the water resource pressure.
However, to avoid health risks to humans, pathogens in sewage must be removed before …

Hydraulic and pollutant removal performance of stormwater filters under variable wetting and drying regimes

BE Hatt, TD Fletcher, A Deletic - Water Science and Technology, 2007 - iwaponline.com
Biofiltration systems are an effective stormwater treatment technology. However, their
robustness is yet to be tested, particularly their performance following extended dry periods …

Slow sand filtration of secondary effluent

S Farooq, AK Al-Yousef - Journal of Environmental Engineering, 1993 - ascelibrary.org
This pilot-scale study comprises a one-year field evaluation of slow sand filtration as a
tertiary treatment of secondary wastewater effluents using two different effective sizes of …

Effect of operating mode on the performance of sand filters treating greywater

IN Shaikh, MM Ahammed - Environmental Science and Pollution …, 2021 - Springer
A long-duration laboratory study spanning more than 6 months was conducted to evaluate
the effect of operating mode on the performance of sand filters for greywater treatment …

Shutdown of BAC filters: effects on water quality

P Niquette, M Prévost, P Servais… - Journal‐American …, 1998 - Wiley Online Library
Adding a filter backwash after shutdown restored the quality of filtered water to its
preshutdown standard. Biological activated carbon (BAC) filtration is used in drinking water …

Virus attenuation by microbial mechanisms during the idle time of a household slow sand filter

MA Elliott, FA DiGiano, MD Sobsey - Water research, 2011 - Elsevier
The biosand filter (BSF) is a household slow sand filter that is operated intermittently such
that an idle time of typically 18–22 h occurs in between daily charges of water. Virus …

Elimination of viruses, bacteria and protozoan oocysts by slow sand filtration

WAM Hijnen, JF Schijven, P Bonne… - Water Science and …, 2004 - iwaponline.com
The decimal elimination capacity (DEC) of slow sand filters (SSF) for viruses, bacteria and
oocysts of Cryptosporidium has been assessed from full-scale data and pilot plant and …

Comparison of grey water treatment performance by a cascading sand filter and a constructed wetland

WW Kadewa, K Le Corre, M Pidou… - Water Science and …, 2010 - iwaponline.com
A novel unplanted vertical flow subsurface constructed wetland technology comprising three
shallow beds (0.6 m length, 0.45 m width and 0.2 m depth) arranged in a cascading series …

The effect of slow sand filter maintenance on water quality

TR Cullen, RD Letterman - Journal‐American Water Works …, 1985 - Wiley Online Library
Full‐scale municipal slow sand filters at seven sites in the Syracuse, NY, area were
monitored before, during, and after filter scraping to verify the presence or absence of a …

Application of a novel backwashing process in upflow biological aerated filter

J Yang, W Liu, B Li, H Yuan, M Tong, J Gao - Journal of Environmental …, 2010 - Elsevier
To improve the efficiency of backwashing in upflow biological aerated filter (BAF), a novel
backwashing process named air-water siphon backwashing (AWSB) was proposed and …