Use of Ceramic Pot Filter (Cpf) Technology under Pressure in an In-Line Pumping System
Abstract
Ceramic pot filters (CPFs) are an effective point of use water treatment device in developing nations due to their low cost and effectiveness. CPFs are gravity fed, typically making water production a major limiting factor to a CPF's lifetime and acceptability. Directly connecting CPFs to in-line pumping systems or systems with an elevated storage tank would allow filter usage for constant water treatment at increased pressures, increasing the quantity of treated water. Ceramic disks were manufactured for testing in a specially designed housing apparatus. Filters of varying thicknesses and clay to sawdust mass ratios were manufactured to fit tightly. Flowrate and microbiological removal efficacy (logarithmic reduction value (LRV)) were determined over the testing period at various pressures. Flowrate values ranged from 2.44 to 9.04 L per hour, significantly higher than traditional CPF technology. LRVs ranged from 1.1 to 2.0, lower than traditional CPF technology but still effective at removing most Escherichia coli and total coliform bacteria. Filters proved effective at removing total and fecal coliforms at pressures less than 70 kilopascals. The optimum filter had a thickness of 3.2 cm and clay to sawdust ratio of 6:1 by mass. Filters proved to be ineffective if flowrates were above 5 L/h.
Recommended Citation
T. D. Gardner and J. D. Guggenberger, "Use of Ceramic Pot Filter (Cpf) Technology under Pressure in an In-Line Pumping System," Water Supply, vol. 18, no. 3, pp. 843 - 852, IWA Publishing, Jun 2018.
The definitive version is available at https://doi.org/10.2166/ws.2017.157
Department(s)
Geosciences and Geological and Petroleum Engineering
Keywords and Phrases
Ceramic disk filter; Ceramic filter under pressure; Water filtration
International Standard Serial Number (ISSN)
1607-0798; 1606-9749
Document Type
Article - Journal
Document Version
Final Version
File Type
text
Language(s)
English
Rights
© 2024 The Authors, All rights reserved.
Creative Commons Licensing
This work is licensed under a Creative Commons Attribution 4.0 License.
Publication Date
01 Jun 2018