Removal of non-ionic and anionic surfactants from real laundry wastewater by means of a full-scale treatment system

Collivignarelli, Maria Cristina; Miino, Marco Carnevale; Baldi, Marco; Manzi, Sabrina; Abbà, Alessandro; Bertanza, Giorgio

doi:10.1016/j.psep.2019.10.022

Cited by 68 publications

(45 citation statements)

References 47 publications

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“…During the last 20 years in EU-15, the sewage sludge produced by urban wastewater treatment plants (WWTPs) has increased from 6.5 million t DM (dry matter) up to 9.5 million t DM [1]; in EU-28, more than 10 million of t DM of sewage sludge have been produced [2]. The contemporary presence of a low wastewater quality [3][4][5] and more stringent requirements for WWTPs effluents quality [6,7] increases the production, and worsens the quality, of the sewage sludge [8]. Therefore, the issues related to sewage sludge management are increasing.…”

Section: Introductionmentioning

confidence: 99%

Legislation for the Reuse of Biosolids on Agricultural Land in Europe: Overview

et al. 2019

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The issues concerning the management of sewage sludge produced in wastewater treatment plants are becoming more important in Europe due to: (i) the modification of sludge quality (biological and chemical sludge are often mixed with negative impacts on sludge management, especially for land application); (ii) the evolution of legislation (landfill disposal is banned in many European countries); and (iii) the technologies for energy and material recovery from sludge not being fully applied in all European Member States. Furthermore, Directive 2018/851/EC introduced the waste hierarchy that involved a new strategy with the prevention in waste production and the minimization of landfill disposal. In this context, biological sewage sludge can be treated in order to produce more stabilized residues: the biosolids. In some European countries, the reuse of biosolids as soil improver/fertilizer in arable crops represents the most used option. In order to control the quality of biosolids used for land application, every Member State has issued a national regulation based on the European directive. The aim of this work is to compare the different approaches provided by European Member States for the reuse of biosolids in agricultural soils. A focus on the regulation of countries that reuse significant amount of biosolids for land application was performed. Finally, a detailed study on Italian legislation both at national and regional levels is reported.

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Section: Introductionmentioning

confidence: 99%

Legislation for the Reuse of Biosolids on Agricultural Land in Europe: Overview

et al. 2019

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“…In addition to reducing water consumption, a possible solution can be the reuse of treated wastewater (WW) produced by human activities [15][16][17]. The WW presents a very large number of contaminants such as dyes, surfactants, heavy metals, drugs, personal care products and bacteria [18][19][20][21][22][23]. To date, there are numerous treatments to remove the contaminants present in the WW, but there is still little attention to the possible reuse of treated water.…”

Section: Introductionmentioning

confidence: 99%

Horizontal Flow Constructed Wetland for Greywater Treatment and Reuse: An Experimental Case

Collivignarelli

Miino

Gomez

et al. 2020

IJERPH

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In the coming years, water stress is destined to worsen considering that the consumption of water is expected to increase significantly, and climate change is expected to become more evident. Greywater (GW) has been studied as an alternative water source in arid and semiarid zones. Although there is no single optimal solution in order to treat GW, constructed wetlands proved to be effective. In this paper, the results of the treatment of a real GW by a horizontal flow constructed wetland (HFCW) for more than four months are shown. In the preliminary laboratory-scale plant, Phragmites australis, Carex oshimensis and Cyperus papyrus were tested separately and showed very similar results. In the second phase, pilot-scale tests were conducted to confirm the performance at a larger scale and evaluate the influence of hydraulic retention time, obtaining very high removal yields on turbidity (>92%), total suspended solids (TSS) (>85%), chemical oxygen demand (COD) (>89%), and five-day biological oxygen demand (BOD5) (>88%). Based on the results of the pilot-scale HFCW, a comparison with international recommendations by World Health Organization and European Union is discussed.

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“…Foaming formation occurs either chemically or biologically [2,14,23,38] and in both cases, a necessary condition is the dispersion of a gas in a liquid [12,13,26]. The chemical foams are caused mainly by excess surfactants (white foams), which have many industrial applications such as washing and cleaning (detergents), pharmaceuticals, cosmetics, textiles, tanneries, agriculture, biotechnology, food, paints, microelectronic, metallurgy, oil recovery and paper, among others [35,[39][40][41]. The presence of surface-active compounds affects the rheology of the fluid interfaces because they can cause variable viscosity, elasticity and surface tension gradients [42].…”

Section: Causesmentioning

confidence: 99%

“…As already expressed in literature [31,32] for drinking water treatment plants, also for WWTPs the same approach of monitoring and optimization could be applied. This would guarantee to cope with the increasing presence of industrial contaminants in wastewaters [33][34][35] and would allow producing a sludge that respects strict limits for the reuse in agriculture [36,37]. This review aims at examination and investigation of the problem of foams through the methodological approach of research to identify the correct control and/or prevention strategies in WWTPs; therefore suggested future outlooks on the basis of previous studies in this topic area are presented and discussed at the end of this work.…”

Section: Introductionmentioning

confidence: 99%

Foams in Wastewater Treatment Plants: From Causes to Control Methods

et al. 2020

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The formation of persistent foams can be a critical problem in wastewater treatment plants (WWTPs) as it could lead to a series of operational problems, especially the reduction of the overall system performance. To date, the effects of foaming in the WWTPs are a problem that is currently very common and shared, but which to date is treated mainly only at the management level and still too little studied through a globally shared scientific method: the complexity of the phenomenon and the systems have led to numerous partially contradictory descriptions and hypotheses over the years. The goal must be to suggest future research directions and indicate promising strategies to prevent or control the formation of foams in WWTPs. This study examines and investigates the problem of foams by a methodological approach of research through a review on the state of the art: the factors influencing the formation of foams are described first (such as surfactants and/or extracellular polymeric substances (EPSs)), then the known methods for the evaluation of foaming, both direct and indirect, are presented, with the aim of identifying the correct and best (from the management point of view) control and/or prevention strategies to be applied in the future in WWTPs.

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Removal of non-ionic and anionic surfactants from real laundry wastewater by means of a full-scale treatment system

Cited by 68 publications

References 47 publications

Legislation for the Reuse of Biosolids on Agricultural Land in Europe: Overview

Legislation for the Reuse of Biosolids on Agricultural Land in Europe: Overview

Horizontal Flow Constructed Wetland for Greywater Treatment and Reuse: An Experimental Case

Foams in Wastewater Treatment Plants: From Causes to Control Methods

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