Effect of Seasons and Sources of Raw Water on the Properties of Water Treatment Residue Compacted Clay

Prakongwittaya, Woottipong; Asavapisit, Suwimol; Piyapanuwat, Rungroj; Muhummud, Teerawut

doi:10.18178/ijesd.2017.8.5.974

Cited by 3 publications

(7 citation statements)

References 1 publication

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“…This agrees with the UCS results for compacted clay in the presence of WTR. However, the experimental results indicated that the coefficients of permeability of compacted clay containing WTR as a clay replacement at all levels did not exceed the regulatory limit (1 × 10 −7 cm/s) of compacted natural clay for sanitary landfills 6,7 …”

Section: Resultsmentioning

confidence: 94%

“…An alkali CaO present in CCR can react with CO 2 and water in a dumping environment and transform into CaCO 3 and Ca(OH) 2. 6,7,11‐14 …”

Section: Resultsmentioning

confidence: 99%

“…This could be caused by the amount of water required during compaction, which was determined as the OMC, being 28.86% for WTR and 26.95% for clay (Table 1). The higher content of fine particles of the WTR results in a higher water adsorption of the WTR compared to clay, which causes the particles of the WTR to swell 6,7 . When the sample was cured at different times, water was desiccated from the sample containing WTR at a greater rate than that with clay thus leaving more empty pore spaces, which is the cause of the UCS reduction.…”

Section: Resultsmentioning

confidence: 99%

“…These industrial residues include coal fly ash, furnace slag, water treatment residue, calcium carbide, and marine clay. [5][6][7][8][9][10] The use of alternate materials in the bottom liner should be designed to have chemical compatibility with a low coefficient of permeability to delay the transport of toxic chemicals via leachates to ground water and the surrounding soil. This is to prevent the dissolution of clay upon contact with certain waste constituents present in the leachate, leading to a change in the coefficient of permeability over time.…”

Section: Introductionmentioning

confidence: 99%

“…Clay can be used as a single material for bottom liners in landfills or combined with alternate materials from industrial residues to produce composite landfill liners. These industrial residues include coal fly ash, furnace slag, water treatment residue, calcium carbide, and marine clay 5‐10 . The use of alternate materials in the bottom liner should be designed to have chemical compatibility with a low coefficient of permeability to delay the transport of toxic chemicals via leachates to ground water and the surrounding soil.…”

Section: Introductionmentioning

confidence: 99%

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Reuse of calcium carbide and water treatment residues in the bottom clay liner of a municipal solid waste landfill

Prakongwittaya

Asavapisit

Piyaphanuwat

2020

Env Prog and Sustain Energy

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In this work, calcium carbide residue (CCR) and water treatment residue (WTR) were used in combination with clay to produce a composite bottom clay liner for sanitary landfills. The effects of these two residues on the performance of a composite bottom clay liner by means of compressive strength development and the coefficient of permeability were studied. The WTR was classified as high plasticity silt according to the Unified Soil Classification System and was used to replace clay with clay:WTR ratios of

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Section: Resultsmentioning

confidence: 94%

“…An alkali CaO present in CCR can react with CO 2 and water in a dumping environment and transform into CaCO 3 and Ca(OH) 2. 6,7,11‐14 …”

Section: Resultsmentioning

confidence: 99%

Section: Resultsmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

See 3 more Smart Citations

Reuse of calcium carbide and water treatment residues in the bottom clay liner of a municipal solid waste landfill

Prakongwittaya

Asavapisit

Piyaphanuwat

2020

Env Prog and Sustain Energy

Self Cite

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Safe and economic disposal of water treatment residuals by reusing it as a substitution layer in roads construction (spectroscopic and geotechnical study)

Nazir

Mahmoud

Ali

et al. 2020

Environ Sci Pollut Res

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Sustainable utilisation of water treatment residue as a porous geopolymer for iron removal from groundwater

Pachana¹,

Rattanasak²,

Nuithitikul³

et al. 2021

Preprint

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Raw water is significant resources for industrial water usage, but this water is not directly suitable for use due to the presence of contaminants. Therefore, pre-treatment is essential. In addition, the presence of iron (Fe) and manganese (Mn) in groundwater can result in a reddish-brown colour and undesirable taste and odour. The treatment generates water treatment residue (WTR) which consists of silt, clay and undesirable components. Most WTR is conventionally disposed of in landfill. A number of expensive and complex technologies are being used for the removal of such iron and manganese. Due to the high Al2O3 and SiO2 content in WTR, the use of WTR-based geopolymers for Fe/Mn removal is proposed in this study. With the availability of free alkali in the geopolymer framework, the OH-releasing behaviour of the WTR-based geopolymer was investigated by the precipitation of Fe(II) ion. The WTR-based geopolymer was calcined at 400°C and 600°C to obtain a strong geopolymer matrix with the ability to remove Fe/Mn ions. The results show that the WTR-based geopolymer has the potential to remove Fe from Fe-contaminated water. Hydroxide ions are released from the geopolymer and form an Fe(OH)3 precipitate. A calcination temperature of 400°C provides total removal of the Fe after 24 h of immersion. In addition, the existence of Fe(OH)3 helps to coprecipitate the Mn(OH)2 in the Fe/Mn solution leading to a significant reduction of Mn from the solution. The pH value and retention time play an important role in the final metal concentration. The final pH of the solution is close to 8.5, which is the recommended value for boiler water. This method offers an alternative use of WTR in making a porous geopolymer for groundwater Fe removal using a simple method.

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Effect of Seasons and Sources of Raw Water on the Properties of Water Treatment Residue Compacted Clay

Abstract: IndexTerms-Atterberg's limit, compaction test, permeability, unconfined compressive strength, water treatment residue.

Cited by 3 publications

References 1 publication

Reuse of calcium carbide and water treatment residues in the bottom clay liner of a municipal solid waste landfill

Reuse of calcium carbide and water treatment residues in the bottom clay liner of a municipal solid waste landfill

Safe and economic disposal of water treatment residuals by reusing it as a substitution layer in roads construction (spectroscopic and geotechnical study)

Sustainable utilisation of water treatment residue as a porous geopolymer for iron removal from groundwater

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