Treatment of contaminated greywater using pelletised mine water sludge

Abed, Suhail N.; Almuktar, Suhad A.A.A.N.; Scholz, Miklas

doi:10.1016/j.jenvman.2017.03.021

Cited by 18 publications

(12 citation statements)

References 16 publications

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“…An increase in HRT when treating SGW in wetland systems using a combination of P. australis and ochre pellets raised the pH values significantly, because of the presence of ochre pellets when comparing T2 and T6 with T10 and T14, respectively (Online Resource 4). This can be explained by the fact that ochre is a mineral-based sludge [25]; its presence in wastewater causes a dynamic chemical exchange of various ions, subsequently increasing the EC and pH [17,54].…”

Section: Resultsmentioning

confidence: 99%

“…The moisture content of the ochre was 87%. Portland cement (three parts) was added to the raw ochre sludge (seven parts) to produce pellets [24,25,46].…”

Section: Cement-ochre Pelletsmentioning

confidence: 99%

“…On the other hand, substances containing calcium such as lime are utilised to achieve good phosphorus removals served with a high level of pH, as this technique is more economic, especially for large volumes of discharge [18]. To reduce consumptions of commercial chemicals for phosphorus removal in wastewater treatment, it was suggested to use raw minerals and industrial by-products such as fly ash [19], slag [20], concrete waste [21], animal waste [22] and ochre sludge [23][24][25].…”

Section: Introductionmentioning

confidence: 99%

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Phytoremediation performance of floating treatment wetlands with pelletized mine water sludge for synthetic greywater treatment

Abed

Almuktar

Scholz

2019

J Environ Health Sci Engineer

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Purpose Buckets containing floating reed (Phragmites australis) simulated floating treatment wetlands (FTWs) and were used to improve the remediation performance of synthetic greywater (SGW). The aim of the study was to investigate the behaviour of FTWs for treatment of key contaminants within artificial greywater. Methods Pelletized ochre based on acid mine water sludge was introduced to selected FTWs, because of its capability in sequestration phosphorus and other trace elements. The impact of the following four operational variables were tested in the experimental set-ups of the FTWs (four replicates each): pollutant strength (high-(HC) and low-(LC) concentrations), treatment time (2-or 7-days of hydraulic retention time (HRT)), presence or absence of macrophytes (P. australis) and cement-ochre pellets.Results The results showed that 5 − day biochemical oxygen demand (BOD) and chemical oxygen demands (COD) were significantly (p < 0.05) reduced in all wetlands. Nitrate-nitrogen (NO 3 -N) concentrations were significantly (p < 0.05) higher, and those measurements for PO 4 -P were significantly (p < 0.05) lower than the corresponding ones determined for the influent. The existence of ochre pellets with P. australis significantly (p < 0.05) decreased B, Cd, Cr, Cu, Mg, Ni and Zn concentrations, but increased Al, Ca, Fe and K concentrations in the effluent, with the exception of sodium (Na). Conclusions The FTW performances can be improved by utilising ochre-cement pellets to increase the pH of greywater. The presence of P. australis acts as a buffer to neutralise the pH of SGW. Rhizomes and biofilms mitigate increases in turbidity, TSS and colour values.

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Section: Resultsmentioning

confidence: 99%

“…The moisture content of the ochre was 87%. Portland cement (three parts) was added to the raw ochre sludge (seven parts) to produce pellets [24,25,46].…”

Section: Cement-ochre Pelletsmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

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Phytoremediation performance of floating treatment wetlands with pelletized mine water sludge for synthetic greywater treatment

Abed

Almuktar

Scholz

2019

J Environ Health Sci Engineer

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“…The various technologies have been examined for GW treatment like coagulation and magnetic ion exchange resin [4], flocculation [5], septic tank followed by intermittent sand filter [6], a moving bed biofilm reactor [7], trickling filters with suspended plastic media [8], slow sand filter and slate waste followed by granular activated carbon [9], drawer compacted sand filter [10], pelletised mine watersludge [11], aerobic attached-growth biomass [12], green roof-top water recycling system constructed wetland [13], biofilter system [14], compact hybrid filter systems [15], a physical treatment system containing coagulation, sedimentation, sand filtration, granular activated carbon filtration, and disinfection [16], and anaerobic filter followed by UV disinfection [17]. Recently, the evolution of greywater recycling operations has been from traditional treatment technologies into more environmentally friendly treatment systems [18,19].…”

Section: Introductionmentioning

confidence: 99%

Clustering the Adsorbents of Horizontal Series Filtration in Greywater Treatment

2020

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One of the important alternative water resources for non-potable purposes is greywater (GW), which must be cleaned of contaminants. In this regard, the clustering analysis of materials consisting of sand (S), zeolite (Z), peat (P) and granular activated carbon (GAC) within a horizontal series filter (HSF) was used for removal of chemical oxygen demand (COD), biochemical oxygen demand (BOD), total dissolved solids (TDS), and turbidity in GW taken from the Fasa University Student Hostel, Iran. The hierarchical clustering technique was applied to classify the adsorbents. The findings indicated that there were significant differences (more than 95%) between these materials. According to the similarity of level 95%, for COD, BOD, TDS, and turbidity removal, these adsorbents could be separately clustered in three, three, two, and three clusters, respectively. In addition, by considering the simultaneous changes of COD, BOD, TDS, and turbidity together, these adsorbents could be clustered in three different clusters. This paper proposed an efficient method to select the best combination of adsorbents for eliminating of COD, BOD, TDS, and turbidity from GW. Generally, based on the quality of treated greywater and literature, reusing greywater can be implemented for agriculture, artificial recharge of aquifers, desertification, and preventing the dust creation in arid areas such as southern Iran.

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“…The high pyrite content of the Bowland Shale Formation has led to the formation of iron oxyhydroxide, sulphuric acid and other weathering products such as jarosite and gypsum, where water has flowed through it and oxidized the pyrite, in hillside stream sections, coastal cliff sections and in quarry waste piles. Iron oxyhydroxide (ochre) precipitates as a result of oxidation in water courses and other surface environments, where it can act as a sink for Se and other trace elements (Sapsford et al 2015;Abed et al 2017). There is, therefore, the potential for Se to be concentrated in alteration products from the Bowland Shale Formation.…”

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confidence: 99%

Liberation of selenium from alteration of the Bowland Shale Formation: evidence from the Mam Tor landslide

Parnell

Bullock

Armstrong

et al. 2018

QJEGH

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The Bowland Shale Formation is anomalously rich in selenium (Se) at levels an order of magnitude greater than other black shales. The Mam Tor landslide, Derbyshire, England, offers an opportunity to measure whether the Se anomaly is conferred to the alteration products formed by oxidative water flow through the shale. Selenium in the shale is concentrated in diagenetic pyrite. Alteration of the shale causes decomposition of the pyrite to iron oxyhydroxide, which is carried in colloidal form (ochre) by springs draining the landslide. The iron oxyhydroxide contains anomalously high Se, and anomalously high Se was measured in water ponded where the ochre precipitated, although not in flowing groundwater. Other trace elements including cadmium and thallium also occur at concentrations higher than in other ochres. Given the widespread nature of the Se anomaly in the Bowland Shale Formation and equivalents across Britain and Ireland, any alteration products derived from workings through the shale should be disposed of with care.

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Treatment of contaminated greywater using pelletised mine water sludge

Cited by 18 publications

References 16 publications

Phytoremediation performance of floating treatment wetlands with pelletized mine water sludge for synthetic greywater treatment

Phytoremediation performance of floating treatment wetlands with pelletized mine water sludge for synthetic greywater treatment

Clustering the Adsorbents of Horizontal Series Filtration in Greywater Treatment

Liberation of selenium from alteration of the Bowland Shale Formation: evidence from the Mam Tor landslide

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