Depth and performance evaluation of a laboratory scale sand filtration system for wastewater treatment

Sodamade, G.A.; Longe, E. O.; Sangodoyin, A. Y.

doi:10.3906/muh-1405-9

Cited by 3 publications

(4 citation statements)

References 15 publications

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“…The results of this study indicate that ISBs can treat septic tank effluent with seawater level salinity (as NaCl) to a similar extent as typical septic tank effluent. ISBs treating synthetic septic tank effluent at 2.6 times the hydraulic loading rate (HLR) of the current study achieved .80% average COD removal (Rodgers et al 2011) and .90% BOD (Sodamade et al 2014). These systems had nearly complete nitrification of influent ammonia (Rodgers et al 2011) and .98% ammonia removal (Sodamade et al 2014).…”

Section: Treatment Efficacymentioning

confidence: 64%

“…ISBs treating synthetic septic tank effluent at 2.6 times the hydraulic loading rate (HLR) of the current study achieved .80% average COD removal (Rodgers et al 2011) and .90% BOD (Sodamade et al 2014). These systems had nearly complete nitrification of influent ammonia (Rodgers et al 2011) and .98% ammonia removal (Sodamade et al 2014). Wang et al (2019) found that a sand filter removed 96% of COD and 98% of ammonia from septic tank effluent at three times the loading rate of the current study.…”

Section: Treatment Efficacymentioning

confidence: 64%

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Treatment of seawater salinity sewage with intermittent sand bioreactors

Conroy¹,

Mancl²

2021

Water Science and Technology

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In water stressed areas, flush toilets using fresh water are unsustainable. This paper explores the ability of intermittent sand bioreactors (ISBs) to treat seawater salinity septic tank effluent for on-site wastewater treatment in coastal regions. Two ISB designs, sand only and layered sand and gravel, are compared for treatment efficacy. Six columns of each design were constructed in the laboratory and dosed four times per day, for a total hydraulic loading rate of 4 cm/day, with artificial seawater salinity septic tank effluent over 21 months. Average TOC and ammonia removal for both designs averaged >90% and >96%, respectively. No statistically significant difference existed in the percent removal or effluent concentrations between the two designs. Half of the columns of each design produced effluent with >4 mg/L ammonia at least once during the study, resulting in discontinuation of wastewater application for seven weeks. This resting approach resulted in effective treatment for up to 9 months (limited by the end of the study). The results indicate that both ISB designs can treat artificial seawater salinity septic tank effluent, but that an additional 1/3 capacity is needed to maintain a consistent hydraulic loading rate while accounting for resting ISBs when treatment efficacy declines.

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Section: Treatment Efficacymentioning

confidence: 64%

Section: Treatment Efficacymentioning

confidence: 64%

Treatment of seawater salinity sewage with intermittent sand bioreactors

Conroy¹,

Mancl²

2021

Water Science and Technology

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“…The columns were sealed at the bottom with 10 mm thick flat Perspex plate and filled with underdrain material of 7.5 cm and each of the columns was filled with separate filter medium (sand or gPKS) of 650 mm depth. The choice of 650 mm was based on [1], where it was reported that a depth of 500 mm and little above it will perform effectively in the removal of the organic load of wastewater through intermittent sand filtration. Also, in an earlier research, Prasad [11] reported removal of organic load 2 ft (0.6 m) depth.…”

Section: Methodsmentioning

confidence: 99%

“…In the course of doing this, most researchers have adopted the usage of sand as material for filtration. Reference [1] adopted the usage of sand for the treatment of synthetic effluent from an onsite wastewater treatment plant. References [2], [3] and.…”

Section: Introductionmentioning

confidence: 99%

Performance evaluation of two filter materials in intermittent sand filtration system

Sodamade

Longe

Odum

2019

Environmental Research and Technology

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The environment is a treasure that needs to be protected from point and diffuse sources of pollution. Most wastewater treatment plants cannot attain 100% efficiencies and this call for tertiary treatment process before discharging final treated wastewater into the environment. The study focused on harnessing the locally available materials, sand and granulated Palm Kernel Shell (gPKS) as filters for treatment of wastewater from constructed wetland using intermittent filtration system in the laboratory. The filter depth and hydraulic loading rate was 650 mm and 0.135 L min -1 , respectively. Applied wastewater was effluent from the Constructed Wetland (CW) of wastewater treatment plant University of Lagos. The filtration system was dosed intermittently 6 hourly for 12 weeks. Experimental results showed that pH of the effluent from gPKS filter medium was slightly reduced to the influent due to acidic nature of the gPKS while effluent from sand filter slightly increased. The five day biochemical oxygen demand (BOD5) removal efficiency for the gPKS and sand filters were 59.2 and 69.08% respectively, while the corresponding average Dissolve Oxygen (DO) were 2.9 ± 0.6 mg L -1 and 3.4 ± 0.345. The percentage removal of E. coli in sand and gPKS filters are 69.34% and 87.49% respectively.

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Reuso de águas cinzas: estudo de caso da eficiência de dois tipos de filtros intermitentes de areia no tratamento de água cinza sintética

Alcântara

Silva²,

Siqueira

et al. 2019

CeN

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Water is a renewable and limited resource, however its potability is an essential factor, since the increase of population in a disorderly way linked to the indiscriminate use of such a resource has posed a threat to the quality of it. In order to find simple, sustainable and low-cost solutions, several countries, such as the United States, Japan and someEuropean countries, have been studying viable ways to treat different types of effluents, especially the domestic ones, gaining visibility for gray water reuse. This work was realized in the United States, Macon - GA, and aimed to create two groups of intermittent sand filters in order to analyze their efficiency in the treatment of synthetic gray water,evaluating the chemical parameters of BOD and COD, and from the results verify the feasibility for non-potable urban reuse and encouraging, through the results, a promising type of study to be carried out in Brazil. The study presented satisfactory results regarding the analyzed chemical aspects, acting in the reduction of BOD and COD withefficiency above 90% for group 1 and above 80% for group 2, besides having effluent filters with mean values of BOD accordance with the legislation envisaged by the USEPA.

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Depth and performance evaluation of a laboratory scale sand filtration system for wastewater treatment

Cited by 3 publications

References 15 publications

Treatment of seawater salinity sewage with intermittent sand bioreactors

Treatment of seawater salinity sewage with intermittent sand bioreactors

Performance evaluation of two filter materials in intermittent sand filtration system

Reuso de águas cinzas: estudo de caso da eficiência de dois tipos de filtros intermitentes de areia no tratamento de água cinza sintética

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