A pilot study of three-stage biological–chemical treatment of landfill leachate applying continuous ferric sludge reuse in Fenton-like process

Klein, Kati; Kivi, Arthur; Dulova, Niina; Zekker, Ivar; Mölder, Erik; Trapido, Marina; Tenno, Toomas

doi:10.1007/s10098-016-1245-5

Cited by 64 publications

(21 citation statements)

References 44 publications

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“…SBR-Fenton-Like-SBR Post-Oxidation (Estonia) Klein et al [166] introduced an aerobic-physic-chemical-aerobic combined treatment for young landfill leachate (BOD/COD = 0.57-0.17). The proposed technological scheme consisted of an activated sludge pre-treatment combined with a Fenton-like process enhanced by continuous sludge reuse and followed by an activated sludge post-oxidation.…”

Section: Sbbgr-eo (Italy)mentioning

confidence: 99%

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Novel and Conventional Technologies for Landfill Leachates Treatment: A Review

et al. 2016

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Abstract:Municipal solid waste final disposal represents an environmental burden worldwide since landfilling, or open dumping, is still the preferred solution for the end of life of solid discarded materials. This study aims to review the technological innovations applied for landfill leachate treatment, taking into consideration the experiences obtained during the past years and the solutions which have been implemented. The review showed that both biological and physiochemical treatments are not able to achieve the requested water quality level, according to the limits established by regulations, whether applied in a single treatment or multiple treatments. In order to respect sustainable release limits to guarantee environmental protection, the construction of depuration systems and combining biological and physiochemical treatment methods is considered of the utmost importance. The review looks at possible joint applications of different treatment techniques reviewed by other studies and considers the state of the art of current research. Combined technical solutions suggested within the 2016 peer-reviewed papers are presented and discussed as a sustainable way to effectively treat landfill leachate, giving particular attention to feasible solutions for developing countries.

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Section: Sbbgr-eo (Italy)mentioning

confidence: 99%

“…Overall, the combined technological scheme with continuous ferric sludge reuse in the Fenton-like stage proved to be a promising alternative for landfill leachate treatment [166]. However, COD concentrations are too high to be introduced into water bodies, and a post combination with municipal wastewater is recommended for this case.…”

Section: Sbbgr-eo (Italy)mentioning

confidence: 99%

Novel and Conventional Technologies for Landfill Leachates Treatment: A Review

et al. 2016

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“…The addition and analyte recovery tests verify a minimum 90% recovery in all the analytical methodologies used, which therefore ensures the reliability of the spectrometric and spectrophotometric analytical results presented in Table 2. For being predominantly anaerobic environments, sanitary landfills produce effluents with considerably low nitrite and nitrate concentrations (Klein et al, 2017;Mandal et al, 2017;Van Turnhout, 2018). Conversely, the great biological activity found both in the waste mass and in the drainage system causes most of the organic nitrogen to be converted into ammoniacal nitrogen within the very landfill.…”

Section: Physicochemical Characterization Of the Untreated Landfill Smentioning

confidence: 99%

“…Their physical, chemical and biological characteristics vary according to their source or generating activity (Klein et al, 2017;Zhang et al, 2017a). Economic, social, geographic, educational, cultural, technological and legal factors affect the solid-waste-generation process concerning the qualitative and quantitative attributes (Li et al, 2017;Peng, 2017).…”

Section: Introductionmentioning

confidence: 99%

“…Although the controlled landfill has been deactivated, the slurry and wastewater keep being generated once the landfill keeps presenting decomposition reactions of the organic parcel until the wastes disposed of have been fully stabilized (Klein et al, 2017;Mandal et al, 2017;Van Turnhout, 2018). However, the liquid waste generated will be a polluting source of underground waters of the whole region circumscribed for a number of years, owing to the toxic character of the slurry gradually liberated with the decomposition of the organic matter and of the inorganic load leaching, since the effluent is not adequately collected by means of blanket and lateral ducts (Peng, 2017;Zhang et al, 2017a;2017b).…”

Section: Introductionmentioning

confidence: 99%

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Characterization of controlled landfill leachate from the city of Guaratinguetá - SP, Brazil

Peixoto¹,

Salazar²,

Barboza³

et al. 2018

Rev. ambiente água

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This research evaluated the physicochemical parameters of a leachate sample from a controlled landfill in the city of Guaratinguetá-SP. The evaluation was conducted using spectrometric and spectrophotometric methods in order to assess the formation of persistent compounds. The selection of parameters was based on the CETESB Article 18 and CONAMA 357/05 Article 34, as well as organic characterization methods, such as FTIR, NMR (1H-NMR, 13C-NMR and APT), GC-MS, molar mass distribution and elemental analysis (CHN). Chemical and physical stability were also verified. The ammoniacal nitrogen concentration is 20 times greater than tolerance limit established by law (20 mg L -1 ). The Ba and Ni presented concentrations above those permitted by the legislation (CETESB Article 18 and CONAMA 357/05 Article 34). Those values of chemical oxygen demand (COD) and total organic carbon (TOC) were 1013 mg L -1 and 286 mg L -1 , respectively. It was not possible to determine the biochemical oxygen demand (BOD) of slurry sample. In this sense, the biodegradability parameter for the slurry studied was Non-Determinable (ND), indicating that the organic matter of the slurry studied is recalcitrant. Recalcitrant humic substances of landfill leachate the present low polydispersity. These refractory acids play a detached role in carrying pollutants in the environment with regard to carrying toxic metals and pesticides. Finally, it was possible to verify that the humic acids' complexing capacity indicates that hydroxyl and carboxyl groups may exist in larger quantities than the nitrogen and sulfur groups. Further, the high content of metals may indicate that the waste was not properly separated.

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A review on the advances in nitrifying biofilm reactors and their removal rates in wastewater treatment

Chaali

Naghdi

Brar

et al. 2018

J of Chemical Tech & Biotech

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Growing demand for efficient wastewater treatment systems is spurring on the development of new technologies. Biofilm‐based reactors can be used for the treatment of a variety of wastewaters and these reactors are resistant to toxic environments. Bioreactors, such as sequencing batch biofilm and moving bed biofilm are advanced techniques to treat various types of wastewaters with diverse operating conditions. Ammonium oxidizing bacteria, nitrite oxidizing bacteria and Anammox (anaerobic ammonium oxidation) bacteria are reported to be responsible for nutrient removal. In recent decades, the performance of these systems has been studied widely and compared for a number of wastewater treatment applications. In general, they are particularly suitable for high‐rate nitrification and nitrogen removal. The efficiency of these reactors has been confirmed in the laboratory and large‐scale plants. Their efficiency depends on the surface area of the biocarrier, the filling percentage volume of biofilm carriers, organic loading and diffused aeration supply. Chemical oxygen demand removal of 50–98% was reported for <12 h hydraulic retention time, 0.2 to 6.5 mg L−1 dissolved oxygen concentration and temperature range 15–35 °C. Also, the ratio of nitrate to ammonium conversion was from 0.2 to 90 and N2 conversion was from 0 to 8.5 mg. This review studied each of these bioreactors in the removal of nutrients (nitrogen, phosphorus and oxygen) from different wastewaters and compared them to conventional treatment. The review also includes the relevant studies on laboratory and pilot‐scale bioreactors to enhance their performance and reduce their costs. © 2018 Society of Chemical Industry

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A pilot study of three-stage biological–chemical treatment of landfill leachate applying continuous ferric sludge reuse in Fenton-like process

Cited by 64 publications

References 44 publications

Novel and Conventional Technologies for Landfill Leachates Treatment: A Review

Novel and Conventional Technologies for Landfill Leachates Treatment: A Review

Characterization of controlled landfill leachate from the city of Guaratinguetá - SP, Brazil

A review on the advances in nitrifying biofilm reactors and their removal rates in wastewater treatment

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