Biofilm and Multimedia Filtration for Rainwater Treatment

Rasid, Rasima Abdul; Rahman, Raha Abdul; Rasid, Rasina Abdul

doi:10.5539/jsd.v2n1p196

Cited by 4 publications

(2 citation statements)

References 6 publications

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“…The fate of the microbial pathogens and FIB in rain tank involves both natural decay and regrowth due to complicated environmental conditions. The biofilm growth in the rain tank is controversial; some suggested the benefit of biofilm at adsorbing trace metals and other pollutants, 49 while others indicated the risk of supporting the survival and growth of human pathogens. 50 There are several reports of presence of pathogens and FIB in the rain tank water (see Section Microbial Removal During Stormwater Harvesting) but no report on pathogen fate in the rain tank.…”

Section: Food Crop Irrigationmentioning

confidence: 99%

Human and environmental health risks and benefits associated with use of urban stormwater

et al. 2015

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For stormwater harvesting to achieve its full potential in mitigating water scarcity problems and restoring stream health, it is necessary to evaluate the human and environmental health risks and benefits associated with it. Stormwater harbors large amounts of pollutants and has traditionally been viewed as a leading cause of water‐quality degradation of receiving waters. Harvesting stormwater for household use raises questions of human exposure to pollutants, especially human pathogens, which have the potential to cause large‐scale disease outbreaks. These issues are compounded by uncertainties relating to the performance of stormwater treatment technologies in pathogen removal. Quantitative microbial risk assessment provides an objective risk estimate based on scientific data and the best assumptions, which can be used to educate and instil confidence in stakeholders of the practice. Although limited, human health risk studies have positively supported the use of minimally treated rainwater and stormwater for some non‐potable applications. In addition to the well‐known benefit of preserving the stream hydrology and ecology, wetlands used for harvesting stormwater can also provide new habitats for wildlife that benefit environmental health. A fundamental change from viewing stormwater as waste to resource requires the coordinated efforts in research, education, and effective communication. WIREs Water 2015, 2:683–699. doi: 10.1002/wat2.1107 This article is categorized under: Engineering Water > Water, Health, and Sanitation

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Section: Food Crop Irrigationmentioning

confidence: 99%

Human and environmental health risks and benefits associated with use of urban stormwater

et al. 2015

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“…At the catchment surface of a rainwater harvesting system (RWH), dust, debris and faecal droppings that have been deposited by animals or wind are washed into the tank together with the microorganisms they contain (Ahmed et al 2012a). Inside the storage tank, microorganisms may die with time or survive and proliferate in biofilms (Rasid 2009). Of the microorganisms that can be present in RHRW, bacteria are abundant and diverse and may include both pathogenic and nonpathogenic species whose presence and prevalence are indicative of the factors contributing to the observed microbial quality (Ahmed et al 2012b).…”

Section: Introductionmentioning

confidence: 99%

Pyrosequencing analysis of roof-harvested rainwater and river water used for domestic purposes in Luthengele village in the Eastern Cape Province of South Africa

Chidamba

Korsten

2015

Environ Monit Assess

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Pyrosequencing targeting the V1-V3 hypervariable of the 16S rDNA was used to investigate the bacterial diversity in river and roof-harvested rainwater (RHRW) used for potable purposes by rural households in Luthengele village in the Eastern Cape Province of South Africa. The phylum Proteobacteria dominated the data set (80.5% of all reads), while 4.2% of the reads could not be classified to any of the known phyla at a probability of 0.8 or higher (unclassified bacteria). At class level, the classes; Betaproteobacteria (50.4% of all reads), Alphaproteobacteria (16.2%), Verrucomicrobiae (6.6%), Planctomycetacia (5.7%) and Sphingobacteria (3%) dominated the data set in all the samples. Although the class Verrucomicrobiae constituted 6.6% of all sequences, 88.6% of the sequences were from the river sample where the class represented 43.7% of the observed sequences in the sample. The bacteria community structure clearly showed significant similarities between RHRW and differences with the river water control sample, suggesting different levels of contamination and environmental factors affecting the various water sources. Moreover, signatures of potential pathogens including Legionella, Acinetobacter, Pseudomonas, Clostridia, Chromobacterium, Yersinia and Serratia were detected, and the proportions of Legionella were relatively higher suggesting a potential health risk to households using RHRW. This work provides guidance for prioritizing subsequent culturable and quantitative analysis, to ensure that potentially significant pathogens are not left out of risk estimations.

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Drinking Water Through Rainwater Harvesting: Development and Performance Evaluation of a Novel Filteration System

Samuel¹

2015

IJRET

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Biofilm and Multimedia Filtration for Rainwater Treatment

Cited by 4 publications

References 6 publications

Human and environmental health risks and benefits associated with use of urban stormwater

Human and environmental health risks and benefits associated with use of urban stormwater

Pyrosequencing analysis of roof-harvested rainwater and river water used for domestic purposes in Luthengele village in the Eastern Cape Province of South Africa

Drinking Water Through Rainwater Harvesting: Development and Performance Evaluation of a Novel Filteration System

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