The Influence of pH on the Removal of Ammonia from a Scheduled Waste Landfill Leachate

Leachates are formed as the result of water or other liquid passing through the landfilled waste. These leachates contain high amounts of inorganic and organic matter such as ammonia which must be treated before being discharged into the environment. A pretreatment is required to increase the efficiency of the ammonia removal process. This paper presents the influence of pH on the removal of ammonia in leachate sample by lime precipitation. A raw leachate sample taken from a scheduled waste landfill was treated with different amount of lime (2, 4, 6, 8 and 10 g/L) to investigate the removal or release of ammonia. The removal of ammonia of raw leachate (average pH=9.43) was 26% and increases to the optimum dosage of 4 g/L with 54% removal at pH=12.39. However, addition of lime of more than 6 g/L does not show any significant effect on ammonia removal due to restabilization of colloids and re-dispersion of the colloidal particulates. An appropriate dosage of lime is an important factor that could save cost and time for the downstream secondary treatment.

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Adsorption removal of refractory organic matter in bio-treated municipal solid waste landfill leachate by anion exchange resins

Waste Management ◽

10.1016/j.wasman.2018.10.005 ◽

2018 ◽

Vol 81 ◽

pp. 61-70 ◽

Cited By ~ 6

Author(s):

Wenjie Sun ◽

Dongbei Yue ◽

Jiangang Song ◽

Yongfeng Nie

Keyword(s):

Organic Matter ◽

Municipal Solid Waste ◽

Solid Waste ◽

Anion Exchange ◽

Landfill Leachate ◽

Waste Landfill ◽

Adsorption Removal ◽

Anion Exchange Resins ◽

Refractory Organic Matter ◽

Exchange Resins

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Ammonia removal from young landfill leachate by magnesium ammonium phosphate precipitation and air stripping

Water Science & Technology ◽

10.2166/wst.2000.0034 ◽

2000 ◽

Vol 41 (1) ◽

pp. 237-240 ◽

Cited By ~ 47

Author(s):

I. Kabdaslı ◽

O. Tünay ◽

İ. Öztürk ◽

S. Yılmaz ◽

O. Arıkan

Keyword(s):

Organic Matter ◽

Landfill Leachate ◽

Ammonium Phosphate ◽

Ammonia Removal ◽

Aerobic Treatment ◽

Air Stripping ◽

Magnesium Ammonium Phosphate ◽

Physical Chemical ◽

Sanitary Landfills ◽

Magnesium Ammonium

Leachate from sanitary landfills is a strong wastewater in terms of organic matter and ammonia. Organic matter can be reduced by anaerobic plus aerobic treatment; however, ammonia reduction by nitrification often poses problems due to inhibition. In this study, ammonia removal by physical chemical treatment from young leachate and anaerobically treated young landfill leachate was experimentally investigated. Magnesium ammonium phosphate precipitation (MAP) and ammonia stripping at pH 12 provided ammonia removals over 90 and 85% respectively. Up to 80% COD removal was obtained with MAP precipitation of raw leachate.

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Effect of submerged combustion evaporation on Cd complexation potential of organic matter in municipal solid waste landfill leachate

Environmental Pollution ◽

10.1016/j.envpol.2020.115573 ◽

2020 ◽

Vol 267 ◽

pp. 115573

Author(s):

Lingyue Zhang ◽

Xinyue Wang ◽

Dongbei Yue

Keyword(s):

Organic Matter ◽

Municipal Solid Waste ◽

Solid Waste ◽

Landfill Leachate ◽

Municipal Solid Waste Landfill ◽

Waste Landfill ◽

Submerged Combustion

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Effect of dilution and operating parameters on ammonia removal from scheduled waste landfill leachate in a lab-scale ammonia stripping reactor

IOP Conference Series Materials Science and Engineering ◽

10.1088/1757-899x/206/1/012076 ◽

2017 ◽

Vol 206 ◽

pp. 012076 ◽

Cited By ~ 1

Author(s):

N M L Hanira ◽

C M Hasfalina ◽

M Rashid ◽

C A Luqman ◽

A M Abdullah

Keyword(s):

Landfill Leachate ◽

Ammonia Removal ◽

Operating Parameters ◽

Ammonia Stripping ◽

Waste Landfill

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Incorporation of ozone-driven processes in a treatment line for a leachate from a hazardous industrial waste landfill: impact on the bio-refractory character and dissolved organic matter distribution

Journal of Environmental Chemical Engineering ◽

10.1016/j.jece.2021.105554 ◽

2021 ◽

pp. 105554

Author(s):

Inalmar D. Barbosa Segundo ◽

Ana I. Gomes ◽

Bianca M. Souza-Chaves ◽

Minkyu Park ◽

André B. dos Santos ◽

...

Keyword(s):

Organic Matter ◽

Dissolved Organic Matter ◽

Industrial Waste ◽

Matter Distribution ◽

Waste Landfill ◽

Treatment Line ◽

Organic Matter Distribution

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Assessing the environmental impacts of municipal solid waste landfill leachate on groundwater and soil contamination in western Saudi Arabia

Arabian Journal of Geosciences ◽

10.1007/s12517-021-06583-9 ◽

2021 ◽

Vol 14 (5) ◽

Author(s):

Abdulaziz G. Alghamdi ◽

Anwar A. Aly ◽

Hesham M. Ibrahim

Keyword(s):

Saudi Arabia ◽

Soil Contamination ◽

Municipal Solid Waste ◽

Solid Waste ◽

Environmental Impacts ◽

Landfill Leachate ◽

Municipal Solid Waste Landfill ◽

Waste Landfill

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Characterizing Seasonal Variation in Landfill Leachate Using Leachate Pollution Index (LPI) at Nam Son Solid Waste Landfill in Hanoi, Vietnam

Environments ◽

10.3390/environments8030017 ◽

2021 ◽

Vol 8 (3) ◽

pp. 17

Author(s):

Son Tran Hoai ◽

Huong Nguyen Lan ◽

Nga Tran Thi Viet ◽

Giang Nguyen Hoang ◽

Ken Kawamoto

Keyword(s):

Environmental Pollution ◽

Landfill Leachate ◽

Pollution Index ◽

Temporal Variations ◽

Inorganic Pollutants ◽

Landfill Leachates ◽

Leachate Treatment ◽

Waste Landfill ◽

Permissible Limits ◽

Leachate Pollution Index

The improper treatment of landfill leachates is one of the major problems associated with waste landfilling and causes serious environmental pollution at waste landfill sites and their surroundings. To develop a suitable landfill leachate treatment system and to minimize the risk of environmental pollution, it is important to characterize seasonal and temporal variations of landfill leachates. This study investigated the leachate quality of the Nam Son waste landfill in Hanoi, Vietnam in 2017–2019 and characterized the potential risks of landfill leachate using a leachate pollution index (LPI). The results of this study showed that the seasonal and temporal variation of the overall LPI during the monitoring period was small and in the range of 20–25 (values 2.5 times higher than the maximum permissible limits of Vietnam National Technical Regulation on Industrial Wastewater). The LPI sub-indices attributed to organic and inorganic pollutants were major components of the LPI. Especially, the annually averaged values of LPI of inorganic pollutants were 7.7 times higher than the maximum permissible limits, suggesting that the treatment of inorganic pollutants, such as ammonium-nitrogen (NH4+–N) and total nitrogen (TN), is highly required at Nam Son landfill to prevent environmental pollution surrounding the landfill site.

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