Desempenho de sistema de tratamento de lixiviado de aterro sanitário com recirculação do efluente

Martins, Cláudia Lavina; Júnior, Armando Borges de Castilhos; Costa, Rejane Helena Ribeiro da

doi:10.1590/s1413-41522010000400013

Cited by 9 publications

(4 citation statements)

References 13 publications

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“…The high concentration of ammonia present in the leachate is harmful to bacteria because it causes damage to substrate degradation and stabilization in biological treatment plants. Free ammonia dissolved in aqueous media (NH 3 ) inhibits the Nitrosomonas bacteria activity, which transform ammonia and nitrite and can be toxic to fish and other microorganisms, thus requiring specific treatment for the removal of this pollutant (Hossaka, 2009; Martins, Castilhos Júnior, & Costa, 2010).…”

Section: Resultsmentioning

confidence: 99%

Utilization of UV‐A and UV‐C radiation in advanced oxidation processes with the intention of removing color and organic matter from the gross leachate of a stabilized sanitary landfill

Pereira

Rocha

Silva

et al. 2020

Environmental Quality Mgmt

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The present work investigated color and biochemical oxygen demand (COD) removal from treated landfill leachate via advanced oxidative processes (AOPs) artificially emitted. The AOP H 2 O 2 /UV, TiO 2 /UV, and photolysis were tested in two bench-scale photoreactors: The first one with UV-C lamp and the other with UV-A lamp associated or not with coagulation / flocculation pretreatment. Crude leachate samples with pH ranging from 8 to 3 were used, and time varied in 30, 45, and 60 minutes. Experiments were performed in two stages: step 1 with a 20 mL volume from each sample and step 2 with repetition of the best results from the previous step, adopting the 150 mL volume. In step 1, the AOP applied in the crude leachate sample showed the best results, standing out H 2 O 2 /UV-C with 30 minutes and TiO 2 /UV-A with 60 minutes. In step 2, H 2 O 2 /UV-C had a 60% color removal and 25% COD reduction, while TiO 2 /UV-A had a 10% color removal and 20% COD reduction. Therefore, the H 2 O 2 /UV-C process was the most efficient, because the complex characteristics of the effluent interfered in the TiO 2 /UV-A efficiency, but it is necessary to eliminate the process interferences. The use of artificial radiation is a viable alternative; however, it can be costly, being relevant in the associations between processes with artificial UV and solar UV, as the natural radiation becomes more attractive and allows the process operating costs reduction.

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Section: Resultsmentioning

confidence: 99%

Utilization of UV‐A and UV‐C radiation in advanced oxidation processes with the intention of removing color and organic matter from the gross leachate of a stabilized sanitary landfill

Pereira

Rocha

Silva

et al. 2020

Environmental Quality Mgmt

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“…Também no estudo de Martins et al (2010), composto por um sistema de três lagoas (lagoa anaeróbia, lagoa aerada e lagoa de maturação) e um filtro de pedras,…”

Section: Lagoas De Estabilização Para Tratamento Do Lixiviado De Ater...unclassified

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Alloway

2012

Environmental Pollution

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“…One of the ways to allocate these residues is the deposit in landfills, the construction of this deposit requires a prior study of the environmental impact in the region and cares such as the deployment of drainage systems, which will guide the landfill leachate (LL) for a pond treatment and stored in tanks commonly waterproofed with clay and double layer of geomembrane of HDPE, to prevent percolation of LL to the subsoil (ABNT, 1992;MARTINS et al, 2010).…”

Section: Introductionmentioning

confidence: 99%

Oxisol physical quality with application of landfill leachate

Oliveira

Figueiredo

et al. 2017

SCA

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The organic carbon present in the landfill leachate (LL) can improve the physical quality of the soil when applied in agricultural areas, minimizing the problem of disposal of this waste. The objective of this work was to evaluate the effect of the application of different doses of LL on the physical quality of the LATOSSOLO VERMELHO (Oxisol) after five years of applications. The treatment consisted of applications of LL in doses of 32, 65, 98 and 130 m 3 ha -1 crop -1 and the treatment that receives mineral fertilizer. The physical quality of the soil was evaluated in soil samples collected in the layers 0.00-0.10 and 0.10-0.20 m, through the analysis of stability and diameter of the aggregates, soil density, total aeration capacity, field capacity and available water content. After five years of application of LL, at doses of 65, 98 and 130 m 3 ha -1 crop -1 have promoted a linear increase of the aggregates with diameter greater than 2.00 mm, of the weighted average and geometric diameters and of the soil density, with a consequent reduction of the ratio between macro and micropores and the aeration capacity of the layers 0.00-0.10 and 0.10-0.20 m. After five years of these applications, the soils that received the dose of 32 m 3 ha -1 crop -1 presented the best physical quality in relation to the other doses, since this dose did not promote an increase of the aggregates larger than 2 mm in the superficial layer (0.00-0.10 m) and was the dose with lower effect in the reduction of aeration of the soil, in relation to the others (65, 98 and 130 m 3 ha -1 crop -1 ) in the layers 0.00-0.10 and 0.10 -0.20 m. Key words: Soil management. Soil porosity. Soil structure. ResumoO carbono orgânico presente no lixiviado de aterro sanitário (LAS) pode melhorar a qualidade física do solo quando aplicado em áreas agrícolas, minimizando o problema de descarte desse dejeto. O objetivo do trabalho foi avaliar o efeito da aplicação de diferentes doses de LAS sobre a qualidade física de um LATOSSOLO VERMELHO Distroférrico após cinco anos de aplicações. Os tratamentos consistiram de aplicações de LAS nas doses de 32, 65, 98 e 130 m 3 ha -1 safra -1 e um tratamento que recebe fertilizante mineral. A qualidade física do solo foi avaliada em amostras de solo coletadas nas camadas 0,00-0,10 e 0,10-0,20 m, por meio da análise da estabilidade e diâmetro dos agregados, densidade do solo, capacidade de aeração total, capacidade de campo e teor de água disponível. Após cinco anos de aplicações de LAS, nas doses de 65, 98 e 130 m 3 ha -1 safra -1 promoveram aumento linear dos agregados com diâmetro maior que 2,00 mm, dos diâmetros médio ponderado e geométrico e da densidade do solo, com consequente redução da razão entre macro e microporos e da capacidade de aeração das camadas 0,00-0,10 e 0,10-0,20 m. Após cinco anos de aplicações de LAS, os solos que receberam a dose de 32 m 3 ha -1 safra -1 apresentaram a melhor qualidade física em relação às demais doses, pois, essa dose não promoveu aumento dos agregados maiores que 2 mm na cama...

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Desempenho de sistema de tratamento de lixiviado de aterro sanitário com recirculação do efluente

Cited by 9 publications

References 13 publications

Utilization of UV‐A and UV‐C radiation in advanced oxidation processes with the intention of removing color and organic matter from the gross leachate of a stabilized sanitary landfill

Utilization of UV‐A and UV‐C radiation in advanced oxidation processes with the intention of removing color and organic matter from the gross leachate of a stabilized sanitary landfill

Introduction

Oxisol physical quality with application of landfill leachate

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