Landfill Leachate Characteristics as Inputs for the Design of Wetlands Used as Treatment Systems

Rovers, Frank A.

doi:10.1201/9781315140230-1

Cited by 6 publications

(7 citation statements)

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“…Alguns autores afirmam que a relação volumétrica entre o lixiviado e o esgoto sanitário passível de ser aplicada é de 2%. Para lixiviados que apresentam valores de demanda química de oxigênio (DQO) de até 10.000 mg L -1 , seria possível adotar até 5% (Mcbean, Rovers & Farquhar, 1995). Já outros estudos tomam por base o tempo de operação do aterro para adotar o percentual volumétrico de lixiviado.…”

Section: Tipos De Tratamento Para O Lixiviado De Aterro Sanitáriounclassified

Discussões Sobre as Alternativas De Tratamento De Lixiviado De Aterro Sanitário No Brasil Diante Do Desafio Dos Contaminantes Emergentes

Pereira,

Oliveira,

Nascentes

2023

HOLOS

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Os aterros sanitários são uma técnica de disposição final de resíduos que vai ao encontro das exigências legais brasileiras. No entanto, os processos que ocorrem nas células dos aterros originam um efluente de complexa composição denominado lixiviado, o qual requer tratamento adequado. Diferentes processos de tratamento de lixiviado considerados avançados já têm sido empregados no Brasil. Além disso, uma estratégia muito comum é o envio do lixiviado para as estações de tratamento de esgoto (ETE), para que os dois efluentes sejam tratados de forma conjunta. Porém, tanto os processos adotados nas estações de tratamento de lixiviado quanto os que se utilizam nas ETE, têm por objetivo a remoção de matéria orgânica e nutrientes, não contemplando os chamados contaminantes emergentes. Diante disso, este trabalho se propõe a discutir as principais formas de tratamento do lixiviado de aterro sanitário, com ênfase na remoção desses contaminantes. Muitas das técnicas de tratamento estudadas já são adotadas para tratar lixiviados em aterros brasileiros, o que pode significar eventual remoção desses compostos. A inclusão destas técnicas, como etapa de pré-tratamento do lixiviado e pós-tratamento nas ETE que o recebem, poderia promover a redução de contaminantes emergentes no efluente final.

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Section: Tipos De Tratamento Para O Lixiviado De Aterro Sanitáriounclassified

Discussões Sobre as Alternativas De Tratamento De Lixiviado De Aterro Sanitário No Brasil Diante Do Desafio Dos Contaminantes Emergentes

Pereira,

Oliveira,

Nascentes

2023

HOLOS

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“…The LGP methodology draws on insights from [39][40][41][42]. The initiation of the growing season necessitates an increase in soil water content, contingent on both soil and crop type.…”

Section: Growing Season Analysismentioning

confidence: 99%

“…This methodology is applied consistently from past simulations to future projections. Despite Ethiopia being a tropical country, the highlands experience minimum temperatures below 9 • C, a critical threshold beyond which crops can no longer extract available soil water [39][40][41][42].…”

Section: Growing Season Analysismentioning

confidence: 99%

Linking Climate Change Information with Crop Growing Seasons in the Northwest Ethiopian Highlands

Tarekegn,

Alaminie,

Debele

2023

Climate

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In Ethiopia, the impacts of climate change are expected to have significant consequences for agriculture and food security. This study investigates both past (1981–2010) and future (2041–2070) climate trends and their influence on the length of the growing season (LGS) in the North-Western Ethiopian highlands. Climate observations were obtained from the National Meteorological Agency of Ethiopia, while the best performing and highest resolution models from the CMIP5 experiment and RCP6 (Coupled Models Intercomparison Project and representative concentration pathway 6) were used for the analysis. Standard statistical methods were applied to compute soil water content, evaluate climate variability and trends, and assess their impact on the length of the growing season. Maximum temperature (tasmax) and minimum temperature (tasmin) inter-annual variability anomalies show that the region has experienced cooler years than hotter years in the past. However, in the future, the coolest years are expected to decrease by −1.2 °C, while the hottest years will increase by +1.3 °C. During the major rainfall season (JJAS), the area has received an adequate amount of rainfall in the past and is very likely to receive similar rainfall in the future. On the other hand, the rainfall amount in the season February to May (FMAM) is expected to assist only with early planting. For the season October to January (ONDJ), the rainfall amount may help lengthen the growing season of JJAS if properly utilized; otherwise, the season has the potential to destroy crops before and during the harvesting time. The soil water content changes in the future remain close to those of the past period. The length of growing seasons has less variable onset and cessation dates, while in the future, the length of the growing period (LGP) of 174 to 177 days will be suitable for short- and long-cycle crops, as well as double cropping, benefiting crop production yield in the North-Western Ethiopian highlands in the future.

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“…A mass flow meter was installed to measure the outflow rate. As the typical pressure of landfill gases is within 10kPa (McBean et al, 1995), differential pressures at 5kPa, 10kPa and 20kPa were supplied from the bottom to the top of each specimen for gas permeability measurement. The selected pressures also comply with ASTM requirement about the pressure control ranging from 5kPa to 35kPa.…”

Section: Gas Permeability Measurement By Flexible Wall Permeametermentioning

confidence: 99%

Influence of biopolymer on gas permeability in compacted clay at different densities and water contents

Lau

et al. 2020

Engineering Geology

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Landfill Leachate Characteristics as Inputs for the Design of Wetlands Used as Treatment Systems

Cited by 6 publications

References 0 publications

Discussões Sobre as Alternativas De Tratamento De Lixiviado De Aterro Sanitário No Brasil Diante Do Desafio Dos Contaminantes Emergentes

Discussões Sobre as Alternativas De Tratamento De Lixiviado De Aterro Sanitário No Brasil Diante Do Desafio Dos Contaminantes Emergentes

Linking Climate Change Information with Crop Growing Seasons in the Northwest Ethiopian Highlands

Influence of biopolymer on gas permeability in compacted clay at different densities and water contents

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