Performance of pilot Horizontal Roughing Filter as polishing stage of waste stabilization ponds in developing regions and modelling verification

Daee, M.; Gholipour, Amir; Stefanakis, Alexandros I.

doi:10.1016/j.ecoleng.2019.07.007

Cited by 25 publications

(5 citation statements)

References 26 publications

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“…Fig. 5 shows that the colour removal efficiency increased with the reduction of flow rate and limestone particle size, which agrees with the results reported by Daee et al (2019) and Maung (2006). The optimum colour removal efficiencies obtained by applying roughing filter with particle size of 4 mm and flow rate of 20 mL/min were 49% for raw limestone, and 58% at 600 °C and 61% C at 800 °C for calcinated limestone, respectively.…”

Section: Performance Of Filterssupporting

confidence: 90%

Performance of Horizontal Roughing Filter for Colour Removal of Palm Oil Mill Effluent Using Natural Adsorbent

et al. 2021

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Palm oil wastewater treatment was investigated via a filtration process using raw and calcinated limestone. The column studies were conducted using different limestone sizes (4, 12, and 20 mm), calcination temperature (800 °C and 600 °C) and various filtration rates (20, 60, and 100 mL/min) and a comparison was made with raw limestone under similar conditions. The response surface methodology using central composite design was employed to optimize the process parameter. The experimental data was analyzed via the analysis of variance to identify the interaction between the parameters and the dependent parameter. The results showed that the colour removal increased with an increase in temperature (800 ºC) for filtration rate of 20 mL/min, the retention time of 317 min and the smaller size (4 mm) of limestone and decreased with an increase in the filtration rate and size of raw limestone. Based on the achieved results, the optimum condition for colour removal was at temperature 800 °C (61%), 600 o C (56%) and raw limestone (49%) respectively with the same experimental setup (flow rate of 20 mL/min and limestone size of 4 mm). According to the statistical analysis, quadratic models demonstrated significant values (0.000) for the response (colour). Freundlich and Langmuir isotherms also provided good correlation coefficient for the colour removal. The data conforms to the Langmuir isotherm with the best fit model (R 2 =0.7).

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Section: Performance Of Filterssupporting

confidence: 90%

Performance of Horizontal Roughing Filter for Colour Removal of Palm Oil Mill Effluent Using Natural Adsorbent

et al. 2021

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“…A horizontal roughing filter (HRF) was made of an acrylic board of 10 mm thickness and served as a pre-treatment unit, while two intermittent slow sand filter (ISSF) units were constructed from 10 mm thick glass. HRF was made of 3 compartments (total effective volume of 0.03 m 3 ) in which the first compartment was filled with coarse gravel (∼⌀ 3 cm), the second compartment filled with medium gravel (∼⌀ 2 cm), and the last compartment was filled with small gravel (∼⌀ 1 cm) [ 30 ] ( Fig. 1 a).…”

Section: Methodsmentioning

confidence: 99%

Performance of a modified and intermittently operated slow sand filter with two different mediums in removing turbidity, ammonia, and phosphate with varying acclimatization periods

Fitriani,

Theresia,

O'Marga

et al. 2023

Heliyon

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“…The isolation and enumeration of bacteria indicative of fecal contamination such as total coliforms (TC), FC and fecal streptococci (FS) are carried out using the most probable number method, and it is a statistical method used to estimate the viable numbers of bacteria in a sample by inoculating broth in 10-fold dilutions and is based on the principle of extinction dilution. It is often used in estimating bacterial cells in wastewater (Yagoubi et al 2000;Phuntsho et al 2016;Daee et al 2019;Ali et al 2020).…”

Section: Methodsmentioning

confidence: 99%

Improving the performance of waste stabilization ponds in an arid climate

Achag

Mouhanni

Bendou

2021

Journal of Water and Climate Change

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In many parts of the world, waste stabilization ponds (WSPs) are currently the preferred wastewater treatment method for municipal wastewater. The objective of this research is to examine the performance of a WSP in an arid climate region and to identify ways to improve its purification efficiency so that it can meet the criteria for reuse. The results attributed the poor performance to both improper process and physical design after 12 months of physicochemical and bacteriological analyses, as well as monitoring of operation, maintenance and loading rates. In tertiary treatment, maturation ponds are added, an increase in the capacity of the station, and management of the flow rate and retention time for each pond. By simulating the new WSP with GPS-X, the best pond area ratio obtained is 2.5 m2/capita, with a retention time of 4 days for anaerobic ponds, 20 days for facultative ponds and 3 days for two maturation ponds in series, which is suitable and provides reduction rates of BOD and fecal coliforms of 95 and 99%, respectively, with an average effluent concentration of 20 mg/L and 195 CFU. According to the results, well-maintained WSPs provide a viable, self-sufficient and environmentally friendly wastewater treatment solution for irrigation water supply in dry areas.

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Performance of pilot Horizontal Roughing Filter as polishing stage of waste stabilization ponds in developing regions and modelling verification

Cited by 25 publications

References 26 publications

Performance of Horizontal Roughing Filter for Colour Removal of Palm Oil Mill Effluent Using Natural Adsorbent

Performance of Horizontal Roughing Filter for Colour Removal of Palm Oil Mill Effluent Using Natural Adsorbent

Performance of a modified and intermittently operated slow sand filter with two different mediums in removing turbidity, ammonia, and phosphate with varying acclimatization periods

Improving the performance of waste stabilization ponds in an arid climate

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