Application of an ultrasonic field for the removal of selected pesticides

Kida, Małgorzata; Ziembowicz, Sabina; Koszelnik, Piotr

doi:10.1051/e3sconf/20184900054

Cited by 4 publications

(2 citation statements)

References 20 publications

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“…However, gaseous compounds such as oxides of carbon and nitrogen, methane, ethene, ammonia, compounds of sulphur, etc., cannot be purified effectively by activated carbon alone [38]. Alternative, competing methods seeking to achieve the limitation or complete elimination of odour-generating processes along networks transferring wastewaters may make use of chemical reagents and so-called advanced oxidation processes (AOPs) [38][39][40][41][42][43].…”

Section: Possibilities Of Preventing Odour Annoyancementioning

confidence: 99%

Odours in Sewerage—A Description of Emissions and of Technical Abatement Measures

et al. 2019

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Malodorous compounds arise at practically every stage of wastewater management, starting from the sewer network, via the technological sewage-treatment system, through to the sludge-management stage. The formation of hydrogen sulphide is a significant problem even while sewage remains in sewers, as anaerobic conditions prevalent in the network are conducive to wastewater putrefaction, and therefore contribute to increased malodorous emissions. The development of such anaerobic conditions is favoured by the oversizing of conduits or designs that feature inadequate gradients, causing wastewater in the network to stagnate. Where emissions to the air from wastewater occur, they are found to constitute a complex mixture of perhaps even 1000 different substances, produced under varying process conditions. Among those present are compounds of sulphur and nitrogen, chlorinated compounds, and other organics. In Poland, the issue of odour annoyance has not yet been subject to standardisation in either legal or methodological terms. Indeed, as only 11 EU Member States have regulations in place regarding air-quality standards, it is likely that such a law will soon be developed to try and resolve problems with odour annoyance, including those originating in the systems dealing with wastewater. This denotes a need to develop methods of counteracting the formation of odours, and those of a chemical nature are regarded as among the most effective, hence their growing popularity. They also abide by green-technology principles. Against that background, this article seeks to consider the process by which malodorous substances arise in sewer and wastewater-treatment systems, as well as to discuss methods of odour abatement. The work also presents the current legal regulations of relevance to the issue.

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Section: Possibilities Of Preventing Odour Annoyancementioning

confidence: 99%

Odours in Sewerage—A Description of Emissions and of Technical Abatement Measures

et al. 2019

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“…Since consumers are becoming more sensitive to the presence of pesticide residue in fresh food and agricultural commodities and sincepesticides must be applied to crops within particular dose limits and laws, numerous pesticide removal technologies to eliminate pesticide residue from fresh agricultural products have been investigated in recent decades [13] , [14] , [15] . Pesticides can be eliminated by a variety of methods, but processes to get them out of aqueous solutions emphasis on sorption, coagulation, membrane processes, degradation by sophisticated oxidation techniques, and biodegradation [16] . Surfactants, ozone (O 3 ), ionic solvents, chlorine treatment and hydrostatic pressure have all been employed to reduce pesticide residue [17] , [18] .…”

Section: Introductionmentioning

confidence: 99%