A Moringa Oleifera Disinfectant-Sand Filter Integration： A Review of an Alternative Sustainable Technology for Household Water Treatment

作     者：K.A. Yongabi D.M. Lewis P.L. Harris 

作者机构：Department of Chemical Engineering The University of Adelaide Adelaide 5005 South Australia Department of Agriculture and Wine Science The University of Adelaide Adelaide 5005 South Australia 

出 版 物：《Journal of Environmental Science and Engineering》 (环境科学与工程（英文版）)

年 卷 期：2011年第5卷第9期

页      面：1100-1108页

学科分类：082802[工学-农业水土工程] 08[工学] 0828[工学-农业工程] 0817[工学-化学工程与技术] 09[农学] 0815[工学-水利工程] 0903[农学-农业资源与环境] 

主　　题：Moringa oleifera disinfectant sand filter water integration review 

摘      要：This review provides an insight and up-to-date information on the application of Moringa oleifera seeds, the short falls of existing technologies as a coagulant and disinfectant in domestic water treatment. While the coagulant properties are well reported, the disinfectant properties are not well studied. Literatures on low cost alternative technologies such as the application of hiocoagulants and slow sand filters are extensively reported. However, there is limited work addressing the limitations of these technologies that have restricted its widespread use to solve the global soaring water crises. Slow sand filters have a very slow filtration rate that depends on the biofilm layer which takes about 17 days to form. Moringa oleifera treated water cannot last more than 48 hours without bacteria regrowth. Investigation of the best method of isolating coagulant component continues with differing opinions over the nature of its coagulant ingredient not resolved in ongoing literature. An attempt was made in this paper to highlight the advantages of a Moringa disinfectant sand filter hybrid system that can purify water. Microbiological advantages of this system in providing a 100% removal of pathogens, and engineering considerations such as water treatment within an hour residence time, faster flow rates, less clogging and backwashing could be some of the advantages ofa Moringa sand filter system. The need to focus on integrating Moringa and sand filter systems for more practical applications is recommended.