Evaluation of electrocoagulation process for high-strength swine wastewater pretreatment

Chen, Runfeng; Wu, Lian; Zhong, Haitao; Liu, Chaoxiang; Qiao, Wei; Wei, Chun-Hai

doi:10.1016/j.seppur.2021.118900

Cited by 49 publications

(22 citation statements)

References 50 publications

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“…3. The results showed that the most favorable pH value for NOR removal was between 7 and 8, consistent with other researches, 32,33 the electrocoagulation using iron anodes performed better in neutral and slightly alkaline conditions.…”

Section: Effect Of Solution Phsupporting

confidence: 90%

Efficient removal of norfloxacin from water using batch airlift-electrocoagulation reactor: optimization and mechanisms analysis

Feng

et al. 2023

RSC Adv.

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Section: Effect Of Solution Phsupporting

confidence: 90%

Efficient removal of norfloxacin from water using batch airlift-electrocoagulation reactor: optimization and mechanisms analysis

Feng

et al. 2023

RSC Adv.

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“…The same study [31] reported low ammonia removals (3-10%) using Fe and Al electrodes, which was also obtained in the present work. This could be explained because NH 4 + exists in the form of small molecules, which is not easy to flocculate [31]. Some authors reported the need for longer electrolysis time (up to 5 h) to increase turbidity and ammonia removal [32], while others reported efficient ammonia removal, but large differences were found among the published results [33].…”

Section: Electrocoagulation (Ec)supporting

confidence: 90%

“…The COD removal can be attributed to the formation of hydroxides or polyhydroxides which coagulate and adsorb the pollutants [30]. Higher COD removals (50%) were found in the literature using Fe electrodes to treat PWW but at higher current densities (30 mA•cm −2 ) [31]. The same study [31] reported low ammonia removals (3-10%) using Fe and Al electrodes, which was also obtained in the present work.…”

Section: Electrocoagulation (Ec)supporting

confidence: 86%

“…Higher COD removals (50%) were found in the literature using Fe electrodes to treat PWW but at higher current densities (30 mA•cm −2 ) [31]. The same study [31] reported low ammonia removals (3-10%) using Fe and Al electrodes, which was also obtained in the present work. This could be explained because NH 4 + exists in the form of small molecules, which is not easy to flocculate [31].…”

Section: Electrocoagulation (Ec)supporting

confidence: 85%

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Exploring Different Pretreatment Methodologies for Allowing Microalgae Growth in Undiluted Piggery Wastewater

et al. 2022

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The overapplication of manure on agricultural soils leads to nitrogen and phosphorus discharge into the aquatic environment, resulting in serious eutrophication problems and decreased water quality. Piggery wastewater (PWW) can be treated by microalgae to recycle nutrients, but the toxic levels of ammonia and organic matter hinder their growth. Fresh water is usually used to dilute PWW, but it is a scarce resource. The implementation of a pretreatment step before microalgae-based treatment could make PWW suitable for microalgae growth. Electrocoagulation, ammonia stripping, photo-Fenton, and constructed wetlands were evaluated as pretreatment methods to reduce ammonia, chemical oxygen demand (COD), color, and total suspended solids. Moreover, the pretreated PWWs were tested to grow the microalga Tetradesmus obliquus. Photo-Fenton showed the best results among the other pretreatments, achieving removal efficiencies above 90%, except for ammonia. This resulted in T. obliquus being capable of growing on undiluted PWW, even at higher ammonia levels, achieving similar biomass productivity to synthetic medium (66.4 ± 17.8 mg·L−1·day−1 and 60.1 ± 10.4 mg·L−1·day−1, respectively) almost doubling with pH control (116.5 mg·L−1·day−1). Thus, this pretreatment seems to be the most promising one to incorporate into microalgae-based treatment systems and must be further explored.

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“…Fluorescent characteristics of the water samples in PD-ANAMMOX coupling batch tests were analyzed by the three-dimensional fluorescence spectrophotometer (model RF-6000, Shimadzu, Japan). 22,23 3. Results and discussion…”

Section: Methodsmentioning

confidence: 99%

Low strength and COD/N wastewater treatment via controlled nitrification by a membrane aerated biofilm, partial denitrification by activated sludge, and anaerobic ammonia oxidation by granular sludge

Rong

Jiang

Luo³

et al. 2023

Environ. Sci.: Water Res. Technol.

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Evaluation of electrocoagulation process for high-strength swine wastewater pretreatment

Cited by 49 publications

References 50 publications

Efficient removal of norfloxacin from water using batch airlift-electrocoagulation reactor: optimization and mechanisms analysis

Efficient removal of norfloxacin from water using batch airlift-electrocoagulation reactor: optimization and mechanisms analysis

Exploring Different Pretreatment Methodologies for Allowing Microalgae Growth in Undiluted Piggery Wastewater

Low strength and COD/N wastewater treatment via controlled nitrification by a membrane aerated biofilm, partial denitrification by activated sludge, and anaerobic ammonia oxidation by granular sludge

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