Removal of organic compounds from landfill leachate by Fenton process in combination with acidification, precipitation and lime coagulation

2020 ◽  
Vol 199 ◽  
pp. 24-32
Author(s):  
Jacek Leszczyński
Keyword(s):  
Organic Compounds ◽  
Landfill Leachate ◽  
Fenton Process

Chemical safety assessment of transformation products of landfill leachate formed during the Fenton process

2021 ◽  
pp. 126438
Author(s):  
Luana de Morais e Silva ◽  
Vinicius M. Alves ◽  
Edilma R.B. Dantas ◽  
Luciana Scotti ◽  
Wilton Silva Lopes ◽  
...  
Keyword(s):  
Landfill Leachate ◽  
Safety Assessment ◽  
Transformation Products ◽  
Fenton Process ◽  
Chemical Safety

Integrated Leachate Treatment Technology

2020 ◽  
pp. 204-220
Author(s):  
Zawawi Daud ◽  
Halizah Awang
Keyword(s):  
Organic Compounds ◽  
Landfill Leachate ◽  
Combined Treatment ◽  
Treatment Technology ◽  
Leachate Treatment ◽  
Chemical Treatments ◽  
Physico Chemical ◽  
Effective Removal ◽  
Removal Of Heavy Metals ◽  
Pre Treatment

In this chapter, the performance of combined treatment of municipal landfill leachate is reviewed. Although individual physico-chemical treatments are suitable for the removal of heavy metals and hydrolyzation of some organic compounds, a combination of two physico-chemical treatments or physico-chemical and biological is required for optimum treatment of stabilized landfill leachate. A combination of two physico-chemical treatments can give optimum results in removal of recalcitrant organic compounds from stabilized leachate, as reflected by a significant decrease of the COD values after treatment. On the other hand, a combination of physico-chemical and biological treatments is required to achieve effective removal of NH3-N and COD with a substantial amount of biodegradable organic matter. In many cases, physico-chemical treatments are suitable for pre-treatment of stabilized leachate. The objective of this paper is to highlight various types of integrated leachate treatments as it has been difficult to get optimum efficiency from single approached treatment.

scholarly journals Ozonation Pretreatment for Reduction of Landfill Leachate Fouling on Membranes: A Response Surface Methodology Analysis

Processes ◽  
2020 ◽  
Vol 8 (5) ◽  
pp. 506
Author(s):  
Everton Gripa ◽  
Alyne M. Costa ◽  
Juacyara C. Campos ◽  
Fabiana V. da Fonseca
Keyword(s):  
Response Surface Methodology ◽  
Experimental Design ◽  
Response Surface ◽  
Reverse Osmosis ◽  
Organic Compounds ◽  
Landfill Leachate ◽  
Operational Conditions ◽  
Toxicity Factor ◽  
High Concentrations ◽  
Modified Fouling Index

Batch ozonation was performed to assess its efficacy as a pretreatment for reverse osmosis (RO) membranes for treating leachate with high concentrations of recalcitrant organic compounds. Leachate samples from two different landfills were collected and characterized. The modified fouling index (MFI) was used to estimate the fouling potential of raw and ozonized leachates. A response surface experimental design was applied to optimize operational pH and ozone dose. The results demonstrate that the best operational conditions are 1.5 g/L of O3 at pH 12.0 and 1.5 g/L of O3 at pH 9.0 for Landfills 1 and 2, which reduce MFI by 96.22% and 94.08%, respectively. Additionally, they show toxicity factor decays of 98.44% for Landfill 1 and 93.75% for Landfill 2. These results, along with the similar behavior shown by leachate samples from distinct landfills, suggest that ozonation is a promising technology to fit this kind of wastewater into the requirements of RO membranes, enabling their use in such treatment.

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