Effect of temperature on the performance of laboratory-scale phosphorus-removing filter beds in on-site wastewater treatment

Herrmann, Inga; Nordqvist, Kerstin; Hedström, Annelie; Viklander, Maria

doi:10.1016/j.chemosphere.2014.07.069

Cited by 24 publications

(17 citation statements)

References 19 publications

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“…at the beginning and towards the end of the study) were also thought to have been unfavourable for the P removal processes in the media. As have been alluded to in Han et al [44] and Herrmann, [39] low temperatures can slow down chemical reactions between the P and the RF media as well as inhibit microbial action in the biomat formed in them. Apart from low temperature and large particle sizes, there could be other factors which may have contributed to the lowering of sorption efficiencies of the filters.…”

Section: Phosphorus Removal Efficiencymentioning

confidence: 96%

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Phosphorus removal from wastewater by field-scale fortified filter beds during a one-year study

Kholoma

Renman

2016

Environmental Technology

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Due to low availability of alternative technologies, rural communities are unable to comply with national wastewater discharge limits. This study tested the effectiveness of filter bed fortification with biochar on phosphorus removal. Water-tight down-flow beds of sand and gas concrete, constructed alongside a reference sand bed (all 0.8 m deep and 0.75 m(2) surface area), were topped with a 0.2 m biochar layer. Pre-treated domestic wastewater with mean concentrations of 6.4 mg/L [Formula: see text] and 142.6 NTU, was infiltrated at 4 cm/d hydraulic loading rate. Ultimately, the biochar-sand was relatively outstanding in turbidity reduction, achieving <5 NTU. The biochar-gas concrete exhibited superior performance in [Formula: see text] removal, trapping 32.3 g (40.2%), compared with 20.5 g (25.6%) and 15.5 g (19.3%) by biochar-sand and reference bed respectively. However, statistical analysis revealed a weak correlation between pH and biochar-gas concrete removal efficiency (r(2 )= 0.2). The relationship was stronger for biochar-sand [Formula: see text] (r(2 )= 0.5) than reference (r(2 )= 0.4) bed. Paired samples t-tests showed that incorporating biochar into the sand bed significantly (p = .04) improved its [Formula: see text] removal efficiency. In conclusion, sand bed fortification with biochar could be an important measure for improving P removal and wastewater clarification efficiency.

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Section: Phosphorus Removal Efficiencymentioning

confidence: 96%

“…As will be shown later, the low temperature affected the sorption capacities of the filters. [39] In general, the temperature ranges were as follows, that is, inlet: 2.8-15.2°C, and effluents, that is, GC-C: 2.0-16.7°C; Sa-C: 2.5-17.0°C and Sa: 2.6-18.1°C.…”

Section: Phosphorus Removal and Performance Indicatorsmentioning

confidence: 99%

Phosphorus removal from wastewater by field-scale fortified filter beds during a one-year study

Kholoma

Renman

2016

Environmental Technology

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“…In recent years, much work has been done to improve P removal in filter systems using active media (e.g., Drizo et al, 2006;Shilton et al, 2006;Gustafsson et al, 2008;Herrmann et al, 2014). In contrast to traditional filtration systems, reactive media filters rely on P-sorption properties of certain materials to remove P in a targeted manner from wastewater (Arias et al, 2003), rather than using filter media solely for attachment of biomass.…”

Section: Absorptive Media For P-removalmentioning

confidence: 99%

“…Much work has focused on reducing the footprint and enhancing the functionality of processes that include P sorption mechanisms, such as in constructed wetlands (Brix et al, 1999;Drizo et al, 1999;Arias et al, 2003;Arias and Brix, 2004;Vymazal, 2007); a treatment option with potential for P-removal at smaller scales (Herrmann et al, 2014). Constructed wetlands are favorable as P uptake can be achieved through microbial and plant uptake, in addition to adsorption by media (Vymazal, 2007;Reddy et al, 2010).…”

Section: Application Of Absorptive Mediamentioning

confidence: 99%

A Review of Phosphorus Removal Technologies and Their Applicability to Small-Scale Domestic Wastewater Treatment Systems

Bunce

Ndam

Ofiţeru

et al. 2018

Front. Environ. Sci.

401

204

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The removal of phosphorus (P) from domestic wastewater is primarily to reduce the potential for eutrophication in receiving waters, and is mandated and common in many countries. However, most P-removal technologies have been developed for use at larger wastewater treatment plants that have economies-of-scale, rigorous monitoring, and in-house operating expertise. Smaller treatment plants often do not have these luxuries, which is problematic because there is concern that P releases from small treatment systems may have greater environmental impact than previously believed. Here P-removal technologies are reviewed with the goal of determining which treatment options are amenable to small-scale applications. Significant progress has been made in developing some technologies for small-scale application, namely sorptive media. However, as this review shows, there is a shortage of treatment technologies for P-removal at smaller scales, particularly sustainable and reliable options that demand minimal operating and maintenance expertise or are suited to northern latitudes. In view of emerging regulatory pressure, investment should be made in developing new or adapting existing P-removal technologies, specifically for implementation at small-scale treatment works.

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“…In previous studies, phosphorus removal using different substrates and sediments proved to be an endothermic process and higher temperature was preferred for the removal of phosphorus (Huang, 2011); (Jin, 2005); (Mezenner, 2009); (Herrmann et al, 2014). The adsorption of phosphorus may involve not only physical but also chemical sorption processes and the particular processes that take place depend on the composition of the substrate used.…”

Section: Introductionmentioning

confidence: 99%

Phosphorus retention capacity in red ferralitic soil

Pérez

Bossens

Rosa

2014

Water Science and Technology

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In this study the main physical-chemical characteristics in the red ferralitic soil to use as substrate in subsurface wetlands was determined. The P-removal was evaluated in a short-term isotherm batch experiment and in a column percolation experiment. The acid characteristic and high content of iron minerals in the red ferralitic soil facilitated the phosphorus removal. Also the sorption isotherms at two different temperatures were obtained. The results showed that the sorption capacity increases with an increase in solution temperature from 25°C to 35°C. The experimental data was fitted to Langmuir and Freundlich models, having a better fit to the Freundlich isotherms. The maximum P-sorption capacities estimated using the Langmuir-isotherm were 0.96 -1.13 g/kg at 25 and 35 °C respectively. Moreover a column experiment was carried out at two different flows. Sequential extractions of the phosphorus saturated soil indicated that phosphorus is mainly bound with iron or aluminium minerals. The results have demonstrated a good potentiality for red ferralitic soil for phosphorus removal from urban wastewater.

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Effect of temperature on the performance of laboratory-scale phosphorus-removing filter beds in on-site wastewater treatment

Cited by 24 publications

References 19 publications

Phosphorus removal from wastewater by field-scale fortified filter beds during a one-year study

Phosphorus removal from wastewater by field-scale fortified filter beds during a one-year study

A Review of Phosphorus Removal Technologies and Their Applicability to Small-Scale Domestic Wastewater Treatment Systems

Phosphorus retention capacity in red ferralitic soil

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