Evaluating pond sand filter as sustainable drinking water supplier in the Southwest coastal region of Bangladesh

Harun, Md. Abdullah Yousuf Al; Kabir, G. M. M.

doi:10.1007/s13201-012-0069-7

Cited by 44 publications

(31 citation statements)

References 5 publications

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“…Turbidity removal of DPHE, NGO forum and Danida Model was 93.19%, 87.5% and 92.25% respectively [9]. The study [7] proves that PSF is unable to remove coliform bacteria by 100 % from highly contaminated water. This is due to failure of actual performance of filter material and another vital cause is pond mismanagement.…”

Section: Introductionmentioning

confidence: 93%

Application of Ceramic Filter for Improvement of Pond Sand Filter’s Water Quality

Sheikh¹

2017

AJEP

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Abstract:Paying attention to the use of surface water a household type filter unit adding with existing Pond Sand Filter (PSF) is introduced as an alternative water supply option where groundwater is contaminated with arsenic/iron or excessive saline and freshwater aquifers are not available. The performances of existing PSFs are not satisfactory due to poor operation and maintenance, shorter filter run and poor treated water quality. In this study a simple and low cost ceramic filter unit consists of clay pot (10L-capacity), ceramic filter core, storage tank and wooden stand, were applied. The combined action of PSF with ceramic filter unit, the average total coliform and fecal coliform removal efficiencies were found to be 99.73% and 99.97% respectively. Moreover, the reduction efficiencies of turbidity, and color were also achieved to be 96.89% and 99.90% respectively. The average discharge rate of the filter was observed to be 3.0 lit/hr. In combination with PSF, this kind of ceramic filter would be a reliable and sustainable treatment option particularly appropriate for problematic area in Bangladesh.

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Section: Introductionmentioning

confidence: 93%

Application of Ceramic Filter for Improvement of Pond Sand Filter’s Water Quality

Sheikh¹

2017

AJEP

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“…DO content of pond water is high and ranges from 6.5 to 7.5 mg/l (Harun and Kabir 2012). The aquifer in the coastal plain of Bangladesh contains iron rich minerals and high levels of soluble iron are found to be present in ambient groundwater.…”

Section: Aquifer Heterogeneity and Fluid-rock Interactionsmentioning

confidence: 99%

Assessing risk of clogging in community scale managed aquifer recharge sites for drinking water in the coastal plain of south-west Bangladesh

Sultana

Ahmed

2016

Bangladesh J. Sci. Res.

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Community scale managed aquifer recharge (MAR) has been implemented by infiltrating pond and rooftop rainwater into shallow, locally confined brackish aquifers in the southern deltaic plains of Bangladesh for providing safe drinking water. This paper mainly deals with the risks of physical clogging and the issues of clogging related to aquifer material, design, drilling and construction methods at 20 sites. Risk of chemical and biochemical clogging has also been briefly discussed. High turbidity in the source pond water is mainly responsible for physical clogging. In order to reduce the turbidity MAR system has been designed with an over ground double chambered filtration tank with a graded sand filter in one chamber. Pond water is pumped into the filtration tank to pass through sand filter. Efficiency of turbidity removal is assessed by measuring turbidity of water at the source pond, after passing though the sand filter and at the abstraction well. The turbidity of source (pond) water ranges from 50 to 150 NTU decreases to 5 NTU after passing through the sand filter in most of the sites. Clogging is assessed by performing falling head tests at each recharge well at number of times during the operation of the test sites. A maximum infiltration rate of 6m 3 /day has been achieved at a number of sites where the average is about 3 m 3 /day. Relatively high nutrient content present both in source and groundwater water could cause biological clogging. Probability of clogging due to clay swelling should be considered due to salinity difference of source and groundwater although sodium adsorption ratio has been observed to be reduced which reduce the risk of reduction of permeability. There is possibility of chemical plugging in the aquifer and around the well from the precipitation of iron bearing minerals as iron concentration has been observed to be reduced.

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“…To define the criterion of water quality both user perception and data from (Ahmed, 1996;Islam et al, 2001;Kawahara et al, 2004;Rahman & Jahra, 2007). Water from the PSF and RWHS scored well as both the options are capable of supplying safe water if designed and maintained properly (Ahmed, 1999;Ferdausi & Bolkland, 2000;Islam et al, 2007;Texas Water Development Board (TWDB), 2011;Harun & Kabir, 2013), and the users were also satisfied with the quality. Because the water from DTWs is bacteriologically safe, this water option scored higher than the STWs, which are at risk of bacterial contamination from the nearby pit latrines, but lower than PSFs and RWHSs because of salinity.…”

Section: The Evaluation Matrixmentioning

confidence: 99%

Multi-criteria decision making methods for rural water supply: a case study from Bangladesh

Sikder

Salehin

2015

Water Policy

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Multiple criteria decision making (MCDM) is a process of evaluating alternatives against relevant decision making criteria. Several methods are available to facilitate the evaluation steps. This paper deals with a rural water supply problem in the coastal areas of Bangladesh. Three different MCDM methods -weighted summation, analytical hierarchy process, and novel approach to imprecise assessment and decision environments -were used to evaluate the suitable water supply alternative. The ranking of alternatives obtained from these MCDM techniques produced similar results. Among five water supply alternatives evaluated, rainwater harvesting systems and deep tube wells scored first and second, respectively, for all three evaluation methods. In addition, sensitivity analyses were carried out for the MCDM techniques and these results did not show drastic variations either. This finding implies that while selection of MCDM technique is important, when evaluating similar problems more emphasis should be given to defining the problem comprehensively and thus selecting the relevant criteria and priorities to factor into the decision problem.

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Evaluating pond sand filter as sustainable drinking water supplier in the Southwest coastal region of Bangladesh

Cited by 44 publications

References 5 publications

Application of Ceramic Filter for Improvement of Pond Sand Filter’s Water Quality

Application of Ceramic Filter for Improvement of Pond Sand Filter’s Water Quality

Assessing risk of clogging in community scale managed aquifer recharge sites for drinking water in the coastal plain of south-west Bangladesh

Multi-criteria decision making methods for rural water supply: a case study from Bangladesh

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