Co-treatment of landfill leachate and domestic wastewater using a submerged aerobic biofilter

Ferraz, Fernanda; Povinelli, Jurandyr; Pozzi, Eloísa; Vieira, Eny María; Trofino, Júlio César

doi:10.1016/j.jenvman.2014.03.022

Cited by 55 publications

(26 citation statements)

References 16 publications

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“…The simplest and cheapest conventional options are recycling [12], combined treatment with domestic wastewater [13,14], and lagooning with recycling. More complex conventional techniques include the biological (aerobic, anaerobic, or mixed) and the chemical/physical processes, such as coagulation-flocculation, chemical precipitation and air stripping.…”

Section: Introductionmentioning

confidence: 99%

Nitrogen Removal from Landfill Leachate by Microalgae

Pereira

Gonçalves

Moreira

et al. 2016

IJMS

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Landfill leachates result from the degradation of solid residues in sanitary landfills, thus presenting a high variability in terms of composition. Normally, these effluents are characterized by high ammoniacal-nitrogen (N–NH4+) concentrations, high chemical oxygen demands and low phosphorus concentrations. The development of effective treatment strategies becomes difficult, posing a serious problem to the environment. Phycoremediation appears to be a suitable alternative for the treatment of landfill leachates. In this study, the potential of Chlorella vulgaris for biomass production and nutrients (mainly nitrogen and phosphorus) removal from different compositions of a landfill leachate was evaluated. Since microalgae also require phosphorus for their growth, different loads of this nutrient were evaluated, giving the following N:P ratios: 12:1, 23:1 and 35:1. The results have shown that C. vulgaris was able to grow in the different leachate compositions assessed. However, microalgal growth was higher in the cultures presenting the lowest N–NH4+ concentration. In terms of nutrients uptake, an effective removal of N–NH4+ and phosphorus was observed in all the experiments, especially in those supplied with phosphorus. Nevertheless, N–NO3− removal was considered almost negligible. These promising results constitute important findings in the development of a bioremediation technology for the treatment of landfill leachates.

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Section: Introductionmentioning

confidence: 99%

Nitrogen Removal from Landfill Leachate by Microalgae

Pereira

Gonçalves

Moreira

et al. 2016

IJMS

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show abstract

Section: Introductionmentioning

confidence: 99%

“…Special interest has been placed into the potential of submerged aerated filters (SAF) to complete TN removal because they are very compact processes, easy to build and install as package plants, and, therefore, ideal to retrofit exist TF WWTPs (Osorio & Hontoria 2002;Ferraz et al 2014;J acome et al 2014). SAFs combine a fixed biofilm (attached to a supporting media) with suspended biomass for bio-treatment (Lin et al 2015;Yin et al 2015).…”

Section: Introductionmentioning

confidence: 99%

Optimization of a full‐scale site to achieve total nitrogen removal through implementation of a denitrification‐submerged anoxic filter

Manzano

Dias

Cannon

et al. 2017

Water & Environment J

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A full‐scale wastewater treatment plant with a 5500 population equivalent was retrofitted with a pre‐denitrification‐submerged anoxic filter (SAnoF) in order to achieve new total nitrogen (TN) consent of 35 mg/L. A 36 m3 SAnoF was installed downstream the primary settling tanks. The optimal operation of the anoxic SAnoF was investigated by varying the recirculation ratio, the carbon‐to‐nitrate ratio, and the hydraulic retention time. After stable operation was achieved, nitrate was removed by 80% at a loading of 0.5 kg NO3/m3 day and a retention time of 60 min. The SAnoF presented a number of advantages, including the use of internal carbon for denitrification, decrease of carbon load to the trickling filter by 30%, and production of alkalinity required for nitrification in the trickling filter (11 mg CaCO3/mg NH4 removed). Overall, the SAnoF was satisfactory and the effluent TN concentration reached 20–25 mg TN/L.

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“…Another less explored possibility implies the use of DWW as co-substrate of degradation. DWW represents a rich source of nutrients, like organic matter, several forms of nitrogen and organic phosphorus that are more biodegradable than NDWW or landfill leachates [23] [24]. A combination of wastewater to make a co-treatment represents a sustainable environmental solution since it uses two types of wastewater that can be depurated in treatment Journal of Water Resource and Protection plants.…”

Section: Introductionmentioning

confidence: 99%

Effect of Domestic Wastewater as Co-Substrate on Biological Stain Wastewater Treatment Using Fungal/Bacterial Consortia in Pilot Plant and Greenhouse Reuse

David¹,

Camilo²,

Farid³

et al. 2018

JWARP

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In this study, a pilot wastewater treatment plant was used to evaluate the co-treatment of biological-staining residues and domestic wastewater under non-sterile conditions. A novel microbial consortia formed by Trametes versicolor, Trametes sp, Pleurotus ostreatus, Pseudomonas fluorescens, Pseudomonas azotoformans, Pseudomonas sp, Enterobacter xianfangensis and Bacillus subtillis was inoculated in an extended aeration type bio-reactor. The treatment units were operated during three consecutive cycles during a period of 147 h. After the last operating cycle, the concentrations of Chemical Oxygen Demand, Biochemical Oxygen Demand, Color Units, Total suspended solids, and the pH value were 1695 mg/L, 105 mg/L, 106 CU, <0.001 mg/L and 5.8 respectively. The initial values of wastewater were 6755 mg/L (COD), 2005 mg/L (BOD 5 ), 1367 (CU), 566 mg/L (TSS) and 7.0 (pH) respectively. The reduction of pollutants load was related with the ratio of the two types of wastewater (3.5:0.5) combined to increase biodegradability, the concentration sults of root weight showed that there are significant differences between the initial water and the effluent obtained after the operational cycles (p = 0.00470). The highest root weights (1 -1.12 g) were found in plants irrigated with water obtained from the last treatment cycle.

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Co-treatment of landfill leachate and domestic wastewater using a submerged aerobic biofilter

Cited by 55 publications

References 16 publications

Nitrogen Removal from Landfill Leachate by Microalgae

Nitrogen Removal from Landfill Leachate by Microalgae

Optimization of a full‐scale site to achieve total nitrogen removal through implementation of a denitrification‐submerged anoxic filter

Effect of Domestic Wastewater as Co-Substrate on Biological Stain Wastewater Treatment Using Fungal/Bacterial Consortia in Pilot Plant and Greenhouse Reuse

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