Floating bioplato for purification of waste quarry waters from mineral nitrogen compounds in the Arctic

Евдокимова, Г. А.; Ivanova, A. L.; Mozgova, Natalia; Myazin, V. A.; Fokina, N. V.

doi:10.1080/10934529.2016.1181454

Cited by 8 publications

(7 citation statements)

References 10 publications

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“…The average nitrogen absorption rate by plants is highly variable, which is reported in the range of between 4% and 90%. Since direct uptake cannot exceed beyond a certain limit, further nitrogen removal is aided by microbial biofilm developed on the root surface through biological nitrification–denitrification processes . Ammonia is oxidized to

N {normalO}_{3}^{-}

through

N {normalO}_{2}^{-}

by nitrifying bacteria in aerobic conditions, and

N {normalO}_{3}^{-}

is restored to molecular nitrogen by denitrifying bacteria.…”

Section: Pollutants Removal Mechanismmentioning

confidence: 99%

Floating Wetlands: A Sustainable Tool for Wastewater Treatment

Shahid

Arslan

Ali

et al. 2018

CLEAN Soil Air Water

104

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Floating treatment wetland (FTW) is an effective and sustainable technology for wastewater treatment. It has been widely adopted for treating various kinds of polluted water including agricultural runoff, stormwater, industrial effluents, etc. In FTWs, plants are vegetated on a floating mat while their roots are extended down to the contaminated water hence acting as biological filters. Nutrients and potentially toxic metal(s)/element(s) are taken up from the wastewater by plants through their roots whereas organic matter is degraded by the microorganisms forming biofilms on the roots and mat surface. Additionally, organic contaminants which are already taken up by the plants are degraded by endophytic bacteria in planta. This article provides an overview of FTWs and their application for wastewater treatment. The key factors which have an impact on the performance of FTWs are also described. Lastly, the potential role of combined use of plants and bacteria in FTWs for the maximum remediation of polluted water is emphasized.

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N {normalO}_{3}^{-}

through

N {normalO}_{2}^{-}

by nitrifying bacteria in aerobic conditions, and

N {normalO}_{3}^{-}

is restored to molecular nitrogen by denitrifying bacteria.…”

Section: Pollutants Removal Mechanismmentioning

confidence: 99%

Floating Wetlands: A Sustainable Tool for Wastewater Treatment

Shahid

Arslan

Ali

et al. 2018

CLEAN Soil Air Water

104

View full text Add to dashboard Cite

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“…3. The comparative sorption capacity of the bio-plateau without options (1) (2) additional aeration, C 0 (Cd) = 1 mg/l the pH range used) slightly inhibited the absorption of Cd(II) ions, in contrast to the acidic environment, for which a significant reduction in purification and transpiration levels was observed.…”

Section: Resultsmentioning

confidence: 99%

“…On this basis, a new type of surface water purification was developed, based on the use of ecosystem mechanisms, which was called "bio-plateau" in Ukraine, "botanical sites" in Germany, "reed bed" in Great Britain, etc. In the world scientific literature, the most common name for water treatment plants of this type is the term "Constructed Wetlands" or "Artificial Wetlands" [1,6,16,13].…”

Section: Introductionmentioning

confidence: 99%

Water Purification from Ions of Cadmium (II) Using a Bio-Plateau

Lapan¹,

Mikhyeyev²,

Маджд³

et al. 2019

J. Ecol. Eng.

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The study was conducted with the purpose of experimentally developing the method of water purification from ions of cadmium (II) using a new design of a bio-plateau, which is based on the use of terrestrial plants. In order to construct the bio-plateau, the following chemically inert floating materials were used as the substrate: perlite, expanded clay, granular foam, vermiculite, cork, on top of which the seeds of higher terrestrial plants were placed. The experimental data showed that foam was the best of the tested substrates, and of plants-barley, oats, corn and rye. The constructed bio-plateau was placed into tanks with a solution of cadmium on the 9th day of incubation to study the cleaning efficiency of terrestrial plants on the aquatic environment. Determination of the residual concentration of cadmium was performed with the method of AAC at λ=228.8. As a result, it was found that rye showed the best sorption properties of the tested plants. The influence of additional aeration and pH of the medium on the degree of water purification was established. The highest treatment efficiency was observed in the variant of a bio-plateau with aeration and at a pH of 8-9. The study shows the possibility of using terrestrial plants for the phytoremediation of water bodies.

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“…Естественное зарастание пруда-отстойника и его прибрежной полосы растительностью протекает крайне медленно, она занимает незначительную часть поверхности объекта. Уровень рН воды варьирует в пределах от 7.6 в I-ой секции до 6.8 во II-ой секции и 6.6 в природном водотоке, а численность сапротрофных бактерий, использующих органические формы углерода, -от сотни клеток до тысячи в 1 мл воды; количество хемотрофных бактерий -нитрификаторов и денитрификаторов, получающих энергию в процессе трансформации неорганических соединений, достигает 25 и 950 кл/мл, соответственно [12].…”

Section: объекты и методы исследованияunclassified

“…Была доказана их жизнеспособность и возможность снижать соединения азота -в большей степени аммонийных и нитритных, в меньшей -нитратных форм. Так, концентрация ионов аммония в воде пруда-отстойника после увеличения площади покрытия биоплато до 26 % уменьшилась на 53-90 %, нитратного азота -на 15-20 % [12]. Однако дальнейшие наблюдения показали, что использование только плавающего биоплато позволяет проводить доочистку исключительно на глубоководных участках пруда-отстойника.…”

Section: результаты исследованийunclassified