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Water 2018, 10(8), 1045; https://doi.org/10.3390/w10081045

Clogging Impacts on Distribution Pipe Delivery of Street Runoff to an Infiltration Bed

Department of Civil and Environmental Engineering, Villanova University, Villanova, PA 19085, USA
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Received: 4 July 2018 / Revised: 3 August 2018 / Accepted: 4 August 2018 / Published: 7 August 2018
(This article belongs to the Special Issue Design of Urban Water Drainage Systems)
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Abstract

The performance of flow through orifices on a perforated distribution pipe between periods with and without partial clogging (submersion of part of the distribution pipe) was compared. The distribution pipe receives runoff and delivers it to an underground infiltration bed. Clogging appeared in winter but was reduced in summer. Performance of flow delivery was found to be defined by the effective pipe length and the pressure head. ANCOVA (ANalysis of COVAriance) was used to examine the clogging effect with flow rate plotted against the effective pipe length times the square root of the mean pressure head, and found that it was significant during low or no rainfall. During larger storms, clogging had little effect on pipe performance. Clogging might be caused by leaves and other trash accumulating in the lower section of the pipe in winter and its effect was insignificant when the water level rose in the pipe, utilizing significantly more orifices on the distribution pipe. Larger storms might also move the debris, thus exposing the orifices. The current maintenance schedule was sufficient to keep the distribution pipe at a satisfactory performance even though partial clogging can exist. View Full-Text
Keywords: ANCOVA; blockage; clogging; efficient; green infrastructure; infiltration bed; orifice; perforation; performance; Philadelphia; pipe; stormwater ANCOVA; blockage; clogging; efficient; green infrastructure; infiltration bed; orifice; perforation; performance; Philadelphia; pipe; stormwater
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This is an open access article distributed under the Creative Commons Attribution License which permits unrestricted use, distribution, and reproduction in any medium, provided the original work is properly cited (CC BY 4.0).
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Tu, M.-C.; Traver, R. Clogging Impacts on Distribution Pipe Delivery of Street Runoff to an Infiltration Bed. Water 2018, 10, 1045.

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