Results 31 to 40 of about 13,909 (224)

Pathogen removal mechanisms in anoxic wastewater stabilization ponds

open access: yesWater Science and Technology, 1996
Anoxic wastewater stabilization ponds can reduce land requirements by as much as two-thirds of that required for facultative ponds and can avoid the environmental nuisances of odour and corrosion, compared with anaerobic ponds. When effluent reuse is to be considered, the aim of wastewater treatment is not only to reduce degradable organic matter but ...
M. B. Pescod, A. Almasi
openaire   +2 more sources

Modelling sludge accumulation in anaerobic wastewater stabilization ponds

open access: yesWater Science and Technology, 1995
Sludge accumulation in the first anaerobic pond at the Alsamra Wastewater Treatment Plant in Jordan has been monitored over a period of years. Homogeneous distribution of sludge over the pond bottom has not been achieved. The maximum amount of sludge has not accumulated near the inlet.
M. B. Pescod, Muwaffaq M. Saqqar
openaire   +2 more sources

Occurrence of Clostridium difficile in two types of wastewater treatment plants

open access: yesJournal of the Formosan Medical Association, 2015
Wastewater is a potential environmental source of Clostridium difficile, although a direct link with community-acquired C. difficile infection (CA-CDI) in humans has not yet been established. The present study was performed to determine the occurrence of
Mahnaz Nikaeen   +3 more
doaj   +1 more source

Variability in phytoplankton community structure and influence on stabilization pond functioning

open access: yesRevista Ambiente & Água, 2020
Density of phytoplankton in stabilization ponds influences treatment performance. The study hypothesized that the phytoplankton community structure varies according to local and temporal changes and consequently influences the treatment of the effluent ...
Emmanuel Bezerra D'Alessandro   +2 more
doaj   +1 more source

The Comparison of parasite eggs and protozoan cysts of urban raw wastewater and efficiency of various wastewater treatment systems to remove them [PDF]

open access: yes
One of the most important quality characteristics associated with wastewater reuse in agriculture is the microbial quality. This study aimed to determine the efficiencies of Ghasreshirin (constructed wetland), Islamabadgharb and Gilangharb wastewater ...
حضرتی, صادق   +4 more
core   +1 more source

The Capital Improvement Plan Environmental Assessment Process [PDF]

open access: yes, 2000
This report contains one explicit mention of Waller Creek and how a Convention Center 66" Water Transmission Line Relocation resulted in a recommendation for the restoration of Waller Creek banks.This report outlines the current requirements for ...
Lyday, Mike
core   +1 more source

β-Galactosidases from a Sequence-Based Metagenome: Cloning, Expression, Purification and Characterization

open access: yesMicroorganisms, 2020
Stabilization ponds are a common treatment technology for wastewater generated by dairy industries. Large proportions of cheese whey are thrown into these ponds, creating an environmental problem because of the large volume produced and the high ...
María Florencia Eberhardt   +2 more
doaj   +1 more source

Assessing the influence of the carbon oxidation-reduction state on organic pollutant biodegradation in algal-bacterial photobioreactors [PDF]

open access: yes, 2011
The influence of the carbon oxidation-reduction state (CORS) of organic pollutants on their biodegradation in enclosed algal-bacterial photobioreactors was evaluated using a consortium of enriched wild-type methanotrophic bacteria and microalgae. Methane,
Bahr, M.   +4 more
core   +3 more sources

Mathematical modeling and optimization of wastewater stabilization ponds using nonlinear programming

open access: yesMehran University Research Journal of Engineering and Technology, 2023
This research work proposes a mathematical optimization model for constructing two ponds (1. Facultative pond and 2. Maturation pond) provided in series. The model uses concrete volume as its objective minimization function.
Hafiz Qasim Ali, Osman Üçüncü
doaj   +1 more source

Sunlight-mediated inactivation of health-relevant microorganisms in water: a review of mechanisms and modeling approaches. [PDF]

open access: yes, 2018
Health-relevant microorganisms present in natural surface waters and engineered treatment systems that are exposed to sunlight can be inactivated by a complex set of interacting mechanisms.
Boehm, Alexandria   +16 more
core   +1 more source

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