greywater treatment Articles
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Greywater treatment with biological aerated filter (BAF) for urban water reuse
Greywater is an excellent resource for service water in intra-urban reuse. By substituting fresh water with appropriately treated greywater, it is possible to save 30–50% of fresh water. In this paper, an up-flow pilot biological aerated filter (BAF) is tested for the treatment of synthetic greywater and the design parameters are determined. An organic load of 8▒kg▒COD/(m3▒d) allows to achieving ...
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Greywater treatment by granular filtration system using volcanic tuff and gravel media
The main objective of this study was to evaluate the efficiency of a granular filtration system (GFS) in greywater treatment under arid and semi-arid conditions. Six GFSs were designed, constructed, and monitored for approximately 13 months. Each GFS served a single rural Jordanian home by treating their greywater. Volcanic tuff media were used as the filtration media in three of the GFSs ...
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Modelling of moving bed biofilm membrane reactors (MBBMR) for on-site greywater treatment
The study evaluates with a mechanistic model the pilot plant results of a combined moving bed biofilm process and membrane filtration (MBBMR) treating single household greywater. It mainly includes the simulation of reactor hydraulics, degradation of pollutants, development of biomass and settlement of sludge. Iterative calibration was made with steady-state results of a 10-month pilot test. ...
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Simulation and verification of hydraulic properties and organic matter degradation in sand filters for greywater treatment
To evaluate the treatment performance of vertical flow sand filters, the HYDRUS wetland module was used to simulate treatment in an experimental set-up. The laboratory filters were intermittently dosed with artificial greywater at a hydraulic loading rate of 0.032 m3 m−2 day−1 and an organic loading rate of 0.014 kg BOD5 m−2 day−1. The hydraulic properties of the ...
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Potential of organic filter materials for treating greywater to achieve irrigation quality: a review
The objectives of this literature review were to: (i) evaluate the impact of greywater generated in rural communities, with the emphasis on Jordanian conditions, on soil, plant and public health and assess the need for treatment of this greywater before it is used for irrigation, and (ii) assess the potential of different types of organic by-products as carrier material in different filter units ...
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Treatment of domestic greywater by geotextile filter and intermittent sand filtration bioreactor
Intermittent sand filtration (ISF) is an efficient system for treatment of greywater; however, the high quality of effluent and the simple set-up contrast with the high failure rate due to clogging of surface layers. The efficacy of several polypropylene non-woven geotextiles (apparent opening size from 0.10 to 0.18 mm) used as primary treatment filters to remove suspended particles from ...
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Membrane process treatment for greywater recycling: investigations on direct tubular nanofiltration
On-site greywater recycling and reuse is one of the main ways to reduce potable water requirement in urban areas. Direct membrane filtration is a promising technology to recycle greywater on-site. This study aimed at selecting a tubular nanofiltration (NF) membrane and its operating conditions in order to treat and reuse greywater in buildings. To do so, a synthetic greywater (SGW) was ...
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Small steps for big changes: Micro-projects to Strengthen Community Resilience
To build the resilience of 23 communities with a high disaster risk rating, the Partners for Resilience (PfR) run micro projects, applying the integrated approach that combines Disaster Risk Reduction (DRR) with Climate Change Adaptation (CCA) and Ecosystem Management and Restoration (EMR). These communities have analysed their needs and solutions to be dealt with in a micro project. Furthermore, ...
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Comparison of grey water treatment performance by a cascading sand filter and a constructed wetland
A novel unplanted vertical flow subsurface constructed wetland technology comprising three shallow beds (0.6 m length, 0.45 m width and 0.2 m depth) arranged in a cascading series and a standard single-pass Vertical Flow Planted Constructed Wetland (VFPCW, 6 m2 and 0.7 m depth) were tested for grey water treatment. Particular focus was on meeting consent for published wastewater reuse parameters ...
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Grey water recycling system for midlands library
Midlands Library Grey Water Recycling System Aquaco has won and is delivering an important contract for a grey water recycling system for a public library in the Midlands. Aquaco feels that a main strength of its business is in grey water recycling which collects bath, basin and shower water, filters and disinfects, and then recycles the water for use in toilet flushing. The Midlands system ...
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How is zeolite water treatment media used in water & wastewater treatment?
Technology is constantly evolving and changing to meet the needs of humanity, and one of those needs is for clean water. The water treatment industry is always researching, testing, and developing new and improved ways in which to treat wastewater and drinking water in ways that are both efficient and environmentally friendly. Zeolite water filtration media is a sustainable, natural treatment ...
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Physicochemical treatment of office and public buildings greywater
The current study analyses the performance of deep sand filtration of greywater from an office building and the performance of a combined physicochemical process comprising of coagulation, sedimentation and filtration. Raw greywater quality exhibited very high variability with average turbidity of 35 NTU, and TSS, CODt, and BOD of 45, 240, 75 mg/l respectively. The stand-alone filter removed 50 ...
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