Application of advanced oxidation processes for treatment of air from livestock and industrial facilities

Yao, Huijun

doi:10.7146/aul.13.12

Cited by 2 publications

(3 citation statements)

References 100 publications

(165 reference statements)

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“…While rates of reaction are very fast, its high cost represents a major limitation. The pH of wastewater also plays an important role conditioning oxidation, with pH in the 6.5-7 range known to be optimal [38,44,45].…”

Section: Possibilities Of Preventing Odour Annoyancementioning

confidence: 99%

“…The latter can also be eliminated effectively when hydrogen peroxide is combined with UV radiation under medium pressure lamps. Studies also report high-efficiency photocatalytic decomposition (with a titanium dioxide catalyst) of mercaptobenzimidazole, mercaptobenzoxazole, mercaptopyridine, and mercaptan paratolil [44,45].…”

Section: Possibilities Of Preventing Odour Annoyancementioning

confidence: 99%

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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%

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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“…The hydroxyl radicals can be obtained by photochemical methods, such as UV/H 2 O 2 , UV/ O 3 , UV/O 3 /H 2 O 2 , photo-Fenton/Fenton-like systems, and photocatalytic oxidation [19]. In cases of highly concentrated wastewaters like leachates, the classical oxidation by O 3 or H 2 O 2 does not decompose easily organic compounds to CO 2 and H 2 O [20,21], although it is theoretically possible given time [22]. Moreover, the oxidation intermediates remaining in the reaction mixture can be even more harmful than the parent compounds [19].…”

Section: Introductionmentioning

confidence: 99%

Effective photochemical treatment of a municipal solid waste landfill leachate

et al. 2020

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This work aimed at studying the photochemical treatment of a landfill leachate using ultraviolet light, hydrogen peroxide, and ferrous or ferric ions, in a batch recycle photoreactor. The effect of inorganic carbon presence, pH, initial H 2 O 2 amount (0-9990 mg L-1) as well as Fe (II) (200-600 ppm) and Fe(III) (300-700 ppm) concentrations on the total carbon removal and color change was studied. Prior to the photochemical treatment, a pretreatment process was applied; inorganic nitrogen and inorganic carbon were removed by means of air stripping and initial pH regulation, respectively. The leachate sent subsequently for photochemical treatment was free of inorganic carbon and contained only organic carbon with concentration 1200±100 mg L-1 at pH 5.1-5.3. The most favorable concentrations of H 2 O 2 and ferric ions for carbon removal were 6660 mg L-1 and 400 ppm, respectively. Adjusting the initial pH value in the range of 2.2-5.3 had a significant effect on the organic carbon removal. The photo-Fenton-like process was more advantageous than the photo-Fenton one for leachate treatment. By applying the most favorable operating conditions, 88.7% removal of total organic carbon, 100% removal of total inorganic carbon, 96.5% removal of total nitrogen, and 98.2% color removal were achieved.

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Application of advanced oxidation processes for treatment of air from livestock and industrial facilities

Cited by 2 publications

References 100 publications

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

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

Effective photochemical treatment of a municipal solid waste landfill leachate

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