Combined processes for wastewater purification: treatment of a typical landfill leachate with a combination of chemical and biological oxidation processes

Klauson, Deniss; Kivi, Arthur; Kattel, Eneliis; Klein, Kati; Viisimaa, Marika; Bolobajev, Juri; Velling, Siiri; Goi, Anna; Tenno, Toomas; Trapido, Marina

doi:10.1002/jctb.4484

Cited by 17 publications

(11 citation statements)

References 46 publications

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“…Hydroxyl radical technologies have been used as a pre-biological treatment or a post-biological treatment process of wastewaters. 24,25 Although such technologies aimed at increasing the mineralization efficiency, they can be considered negligible contributors of CO 2 in the overall treatment process. Maybe SR-Fenton cannot completely substitute Fenton system in terms of mineralization.…”

Section: -21mentioning

confidence: 99%

Sulfur‐replaced Fenton systems: can sulfate radical substitute hydroxyl radical for advanced oxidation technologies?

Zhou

Zhang

Chen

2014

J of Chemical Tech & Biotech

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Sulfate radicals (SO4•−) and hydroxy radicals (HO•) are the major radicals used in advanced oxidation technologies (AOTs) for the removal of contaminants. Although SO4•− reacts with organic or inorganic compounds with rate constants comparatively lower than that of HO•, AOTs based on SO4•− (abbreviated as SR‐AOTs) have gained lots of attention due to the selective oxidation and non‐pH‐dependence. A series of systems using persulfate (PS) or peroxymonosulfate (PMS) instead of H2O2 is designated as a sulfate radical‐Fenton system or sulfur‐replaced Fenton system (SR‐Fenton). Comparisons and analogies between Fenton (Fenton‐like) systems and SR‐Fenton systems are made and some new SR‐AOTs systems without PS or PMS are introduced. The possibility for the substitution of HO• by SO4•− for AOTs is discussed. Most likely in the future, efforts will be concentrated on product‐oriented AOTs with the purpose of recovery of chemical products rather than mineralization of organic contaminants, producing greenhouse gas CO2. Moreover, such SR‐Fenton system may be more atomically economical. © 2014 Society of Chemical Industry

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Section: -21mentioning

confidence: 99%

Sulfur‐replaced Fenton systems: can sulfate radical substitute hydroxyl radical for advanced oxidation technologies?

Zhou

Zhang

Chen

2014

J of Chemical Tech & Biotech

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“…Standard colorimetric method (APHA 2012) was used in order to determine the chemical oxygen demand (COD) of the wastewater; the interference of hydrogen peroxide was estimated as described previously (Klauson et al 2014). The 7-day biochemical oxygen demand (BOD 7 ) was determined in the initial and treated wastewater samples according to the standard procedure (APHA 2012).…”

Section: Methodsmentioning

confidence: 99%

“…While such combined treatment processes were investigated for various water types, e.g. landfill leachate (Klauson et al 2014), textile yarn dyeing effluent (Lotito et al 2014), the authors could not find any such publications for wood industry-based wastewaters.…”

Section: Introductionmentioning

confidence: 99%

Combined methods for the treatment of a typical hardwood soaking basin wastewater from plywood industry

Klauson

Klein

Kivi

et al. 2015

Int. J. Environ. Sci. Technol.

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In this research, various combinations of physicochemical (coagulation, Fenton process and ozonation) and biological (aerobic oxidation) treatment methods were used to purify wastewater originating from wood soaking basins in plywood production industry. Although the wastewater has good biodegradability (92 %), there is a high fraction of organic material expressed as recalcitrant chemical oxygen demand (COD) of approximately 360 mg L -1 . High fraction of organics is caused by woodoriginating water-soluble material, i.e. extractives, including lignin and tannins. It was found that optimal treatment method for hardwood soaking basin wastewater is the combination of biological pre-treatment, chemical treatment with Fenton reagent and biological post-treatment. Under optimal conditions of combined process performance, up to 99 % removal of the organic loads, nitrogen and phenols was achieved. Besides achieving target discharge limits stated for industrial wastewater, the effluent met the requirements set for municipal wastewater treatment plants, making the treated water acceptable for subsequent discharge into natural water bodies: treated water COD = 90 ± 3 mg L -1 ; BOD 7 = 10 ± 1 mg L -1 . The main result of the present work was the establishment of sustainable, efficient and economically feasible process to treat the wastewater with minimised chemicals consumption. This differs considerably from approaches such as coagulation or wet oxidation, used to treat similar water types according to the literature, and is readily applicable for the production facilities of various scales, including small and medium enterprises, without the need to make changes in existing technological schemes.

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“…Throughout the world, appropriate management of MSW is becoming one of the most challenging environmental problems. For decades, landfilling has been commonly applied as an ultimate disposal practice for MSW (Klauson et al, 2015; Oulego, Collado, Laca, &…”

Section: Introductionmentioning

confidence: 99%

Mixed culture of Lactococcus lactis and Kluyveromyces marxianus isolated from kefir grains for pollutants load removal from Jebel Chakir leachate

Cherni

Botta

Kasmi

et al. 2020

Water Environment Research

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The wastewater from the dumping site usually contains high pollutant levels. Biological process and physico-chemical treatments are among several technologies for wastewater treatment. Using microorganisms in the treatment of landfill leachate is an emerging research issue. Furthermore, bioremediation is a feasible approach for pollutants removal from landfill leachate which would provide an efficient way to resolve the issue of landfill leachate. In this study, the performance of yeast and bacteria isolated from kefir grains was assessed for landfill leachate treatment. Kefir grains microbial composition was evaluated by molecular approaches (Rep-PCR and 16S rRNA gene sequencing). The obtained outcomes denoted that high concentrations of lactic acid bacteria and yeast populations (over 10 7 CFU/ml) were found in the kefir grains and were essentially composed of Lactococcus lactis, Lactobaccillus kefirien, bacillus sp., L. lactis, and Kluyveromyces marxianus. The co-culture with 1% of inoculum size was demonstrated as the most efficient in the degradation of different contaminants. The overall abatement rate of chemical oxygen demand (COD), ammonium nitrogen (NH + 4 − N), and salinity were 75.8%, 85.9%, and 75.13%, respectively. The bioremediation process resulted in up of 75% removal efficiency of Ni and Cd, and a 73.45%, 68.53%, and a 58.17% removal rates of Cu, Pb, and Fe, respectively. The research findings indicate the performance of L. lactis and K. marxianus co-culture isolated from kefir grains for the bioremediation of LFL. © 2020 Water Environnment Federatio • Practitioner Points • Isolation and identification of microorganisms from kefir grains was carried out. • Biological treatment of LFL using monoculture of (Lactoccocus lactis; Kluyveromyces marxianus) and co-culture (5% of L. lactis and 5% K. marxianus) has been performed. • Biological treatment using co-culture strain is an effective approach to remove organic matter, NH + 4 − N and heavy metals.

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Combined processes for wastewater purification: treatment of a typical landfill leachate with a combination of chemical and biological oxidation processes

Cited by 17 publications

References 46 publications

Sulfur‐replaced Fenton systems: can sulfate radical substitute hydroxyl radical for advanced oxidation technologies?

Sulfur‐replaced Fenton systems: can sulfate radical substitute hydroxyl radical for advanced oxidation technologies?

Combined methods for the treatment of a typical hardwood soaking basin wastewater from plywood industry

Mixed culture of Lactococcus lactis and Kluyveromyces marxianus isolated from kefir grains for pollutants load removal from Jebel Chakir leachate

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