Waste Stabilization Ponds

Verbyla, Matthew E.; Sperling, Marcos von; Maïga, Ynoussa

doi:10.14321/waterpathogens.65

Cited by 17 publications

(25 citation statements)

References 76 publications

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“…The microalgae have recently been utilised for the removal of viruses from the wastewater [ 21 , 113 , 114 ]. Various studies have investigated the cultivation of microalgae in photobioreactors, biofilm reactors, MBRs, and oxidation ponds to evaluate their efficiencies for wastewater disinfection.…”

Section: Microalgae-based Approaches; An Underexplored Biological Trementioning

confidence: 99%

Occurrence, fates and potential treatment approaches for removal of viruses from wastewater: A review with emphasis on SARS-CoV-2

Bhatt

Arora

Prajapati

2020

Journal of Environmental Chemical Engineering

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Section: Microalgae-based Approaches; An Underexplored Biological Trementioning

confidence: 99%

Occurrence, fates and potential treatment approaches for removal of viruses from wastewater: A review with emphasis on SARS-CoV-2

Bhatt

Arora

Prajapati

2020

Journal of Environmental Chemical Engineering

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“…Hookworm eggs, Trichostrongylus spp eggs, Cryptosporidium spp oocysts, and Entamoeba coli cysts were observed to persist throughout all treatment stages of at least one WSP system. Sedimentation is said to be an effective removal mechanism for helminth eggs and protozoan (oo)cysts in WSP systems [39]. The process is greatly influenced by the system's hydraulic retention time (HRT).…”

Section: Resultsmentioning

confidence: 99%

Evaluation of Occurrence, Concentration, and Removal of Pathogenic Parasites and Fecal Coliforms in Three Waste Stabilization Pond Systems in Tanzania

Zacharia

Ahmada

Outwater

et al. 2019

The Scientific World Journal

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In Tanzania, waste stabilization ponds (WSPs) are employed to treat wastewater, and effluents are used for urban agricultural activities. The use of untreated or partially treated wastewater poses risks of disease transmission, including parasitic and bacterial infections, to exposed communities. Little is known about the occurrence, concentration, and removal of parasites and fecal coliform (FC) bacteria in WSPs in Tanzania. This study evaluates the occurrence and concentration of parasites and FCs in wastewater, the efficiency of WSPs in removing parasites and FCs, and the validity of using FCs as an indicator of parasites. This was a cross-sectional study conducted between February and August 2018. Wastewater samples were collected from three WSPs located in the Morogoro, Mwanza, and Iringa regions. APHA methods were used to test physicochemical parameters. The modified Bailenger method and Ziehl–Neelsen stain were used to analyse parasites. Membrane filtration method was used to analyse FCs. Data were analysed using IBM SPSS version 20. Helminth egg removal ranged from 80.8% to 100%. Protozoan (oo)cyst removal ranged from 98.8% to 99.9%. The Mwanza WSP showed the highest FC reduction (3.8 log units (100 mL)−1). Both the parasites and FCs detected in the effluents of assessed WSPs were of higher concentrations than World Health Organization and Tanzania Bureau of Standards limits, except for helminths in the Morogoro WSP and FCs in the Mwanza WSP. FCs were significantly correlated with protozoa (p < 0.01) and predicted protozoa occurrence well (p=0.011). There were correlations between physicochemical parameters, parasites, and FC bacteria in the WSP systems. Inadequate performance of these systems may be due to lack of regular maintenance and/or systems operating beyond their capacity. FC indicators were observed to be a good alternative for protozoa monitoring, but not for helminths. Therefore, during wastewater quality monitoring, helminths should be surveyed independently.

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“…Although the sedimentation is more effective in WSP with less turbulence. While the WSP systems have hydraulic retention times on the order of days, weeks, or even months, which allows particles to sedimentation [14]. Moreover, there are other factors is important for bacterial pathogens removal in WSP.…”

Section: Resultsmentioning

confidence: 99%

“…Major factors affecting pathogen removal and diagram showing the influence of sunlight on pathogen die-off[14].…”

mentioning

confidence: 99%

Removal of escherichia coli using waste stabilization pond: A simulation in climatic conditions of Libya

Faskol¹,

Racoviteanu²

2019

E3S Web Conf.

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The most important determinant when recycling of wastewater for agriculture is that related to public health. This paper investigates the removal of Escherichia Coli/coliform in the waste stabilization pond as simulation as assessing of mitigating health risk. A case study in climatic conditions of Libya. As a result of a computer program based waste stabilization pond design based on parameter uncertainty and 10,000-trial Monte Carlo simulations, were developed for a series of anaerobic, facultative and maturation ponds to produce on a 95%-ile value <1000 E. Coli per 100 ml. While a number of influent of E. Coli bacteria was (156.732×106 E. Coli /100ml). Where it decreased was a number of the effluent (10 E. Coli /100ml). Where the efficiency of removal E. Coli bacteria was (99.999 %). And the overall hydraulic retention time it took 89.548 days in the anaerobic pond, facultative pond, first maturation pond and twelve of the subsequent maturation ponds. To satisfy practice 2006 WHO guidelines for the safe use of wastewater in agriculture.

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Waste Stabilization Ponds

Cited by 17 publications

References 76 publications

Occurrence, fates and potential treatment approaches for removal of viruses from wastewater: A review with emphasis on SARS-CoV-2

Occurrence, fates and potential treatment approaches for removal of viruses from wastewater: A review with emphasis on SARS-CoV-2

Evaluation of Occurrence, Concentration, and Removal of Pathogenic Parasites and Fecal Coliforms in Three Waste Stabilization Pond Systems in Tanzania

Removal of escherichia coli using waste stabilization pond: A simulation in climatic conditions of Libya

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