Fragmented limestone wastes as a constructed wetland substrate for phosphorus removal

Mateus, Dina M. R.; Vaz, Mafalda M.N.; Pinho, Henrique J. O.

doi:10.1016/j.ecoleng.2012.01.014

Cited by 70 publications

(14 citation statements)

References 19 publications

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“…However, recent studies have shown that contribution to treatment of the overall system by these substrates has been limited. Therefore, alternative substrates have become more attractive and a number of studies have been conducted using alternative substrates in wetland applications [20][21][22][23]. These include natural, manufactured and reclaimed materials.…”

Section: Introductionmentioning

confidence: 99%

Peat as Substrate for Small-Scale Constructed Wetlands Polishing Secondary Effluents from Municipal Wastewater Treatment Plant

Jin

Carlos

McConnell

et al. 2017

Water

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Abstract:With the recent development of constructed wetland technology, it has become a mainstream treatment technology for the mitigation of a variety of wastewaters. This study reports on the treatment performance and pH attenuation capacity of three different configurations of small-scale on-site surface flow constructed wetlands (SFCW): T1 (Peat + Typha latifolia), T2 (T. latifolia alone), and T3 (Peat alone) treating secondary effluent from the Amherstview Water Pollution Control Plant (WPCP) for two treatment periods (start-up period and operational period). The aim of this study was to compare the nutrients removal efficiencies between the different treatments, as well as to evaluate the effects of substrate and vegetation on the wetland system. For a hydraulic retention time of 2.5 days, the results showed that all treatment systems could attenuate the pH level during both the start-up and operational periods, while significant nutrient removal performance could only be observed during the operational period. Peat was noted to be a better SFCW substrate in promoting the removal of nitrate (NO 3 -N), total nitrogen (TN), and phosphorus. The addition of T. latifolia further enhanced NO 3 -N and TN removal efficiencies, but employing T. latifolia alone did not yield effluents that could meet the regulatory discharge limit (1.0 mg/L) for phosphorus.

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Section: Introductionmentioning

confidence: 99%

Peat as Substrate for Small-Scale Constructed Wetlands Polishing Secondary Effluents from Municipal Wastewater Treatment Plant

Jin

Carlos

McConnell

et al. 2017

Water

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“…In attempt to develop the available, efficient, cost effective and environmentally benign adsorbents, several P adsorbents have been proposed by researchers. Many of these adsorbents are waste or cheap materials, such as fly ash (Oguz, 2005, Ugurlu andSalman, 1998), gravel and industrial-waste substrata (Mann and Bavor, 1993), phosphate mine wastes (Jellali et al, 2010, Jellali et al, 2011, blast furnace slag (Johansson, 1999, Gong et al, 2009, iron humate (Janoš et al, 2011), soils (Liang et al, 2010), and limestone (Mateus et al, 2012). Aluminium compounds have been extensively used for water and wastewater treatment purposes.…”

Section: Introductionmentioning

confidence: 99%

Thermally treated aluminium waste-filings, a low cost and efficient adsorbent for phosphorus removal from water

Qasemi¹,

Hosseini-Bandegharaei²,

Afsharnia³

et al. 2018

Global NEST Journal

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<p>A facile strategy toward modification of aluminium filings (AF), a waste material from aluminium manufacturing industry, into a highly efficient adsorbent was examined. AF was simply treated with thermal modification to form a cheap adsorbent for Phosphorus (P) removal from aqueous solutions. The results showed that increasing the calcination temperature from 500 to 900 ˚C improved the P removal. P adsorption occurred quite fast and 70% of P removal observed in 15 minutes. Adsorption efficiency was increased by increasing pH, decreasing P initial concentration as well. The presence of coexisting anions, except HCO3-, showed a negligible effect on P adsorption by AF. Thermodynamic studies revealed that P adsorption onto AF was endothermic in nature. Kinetic modelling demonstrated that the adsorption rate was controlled by the chemisorption. The process also fitted well with the Langmuir isotherm model, indicating that the process proceeds via monolayer coverage with 49.97 mg g-1 maximum monolayer capacity. Overall, in addition to beneficial environmental and economic aspects, the results demonstrated excellent adsorption characteristics which make thermally treated AF a promising adsorbent material for phosphorus removal from polluted streams.</p>

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“…Different filter materials for phosphorus removal from wastewater in treatment wetlands have been studied [62,63]. The potential of fragmented Moleanos limestone [64], wollastonite [65], crushed brick and palygorskite [66], a mixture of river sand and dolomite (10:1 w/w), [67] was investigated.…”

Section: Introductionmentioning

confidence: 99%

Nutrients and Organic Matter Removal in a Vertical-Flow Constructed Wetland

Lavrova¹,

Koumanova²

2013

Applied Bioremediation - Active and Passive Approaches

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Fragmented limestone wastes as a constructed wetland substrate for phosphorus removal

Cited by 70 publications

References 19 publications

Peat as Substrate for Small-Scale Constructed Wetlands Polishing Secondary Effluents from Municipal Wastewater Treatment Plant

Peat as Substrate for Small-Scale Constructed Wetlands Polishing Secondary Effluents from Municipal Wastewater Treatment Plant

Thermally treated aluminium waste-filings, a low cost and efficient adsorbent for phosphorus removal from water

Nutrients and Organic Matter Removal in a Vertical-Flow Constructed Wetland

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