Use of Algae in a Landfill Leachate Treatment System

2021 ◽  
Author(s):  
Kaitlyn DuBois Sniffen
Keyword(s):  
Landfill Leachate ◽  
Treatment System ◽  
Leachate Treatment

Organophosphorus flame retardants and heavy metals in municipal landfill leachate treatment system in Guangzhou, China

2018 ◽  
Vol 236 ◽  
pp. 137-145 ◽  
Author(s):  
Mingjun Deng ◽  
Dave T.F. Kuo ◽  
Qihang Wu ◽  
Ying Zhang ◽  
Xinyu Liu ◽  
...  
Keyword(s):  
Heavy Metals ◽  
Landfill Leachate ◽  
Flame Retardants ◽  
Treatment System ◽  
Leachate Treatment ◽  
Municipal Landfill ◽  
Organophosphorus Flame Retardants

Biochar-based Barricade and Wetland as an Integrated Landfill Leachate Treatment System

2021 ◽  
Author(s):  
Kusalvin Dabare ◽  
Prabuddhi Wijekoon ◽  
Asitha Cooray ◽  
B.C.L. Athapattu ◽  
Meththika Vithanage
Keyword(s):  
Landfill Leachate ◽  
Treatment System ◽  
Leachate Treatment

scholarly journals Analysis of the Landfill Leachate Treatment System Using Arima Models: A Case Study in a Megacity

2021 ◽  
Vol 11 (15) ◽  
pp. 6988
Author(s):  
Carlos Alfonso Zafra-Mejía ◽  
Daniel Alberto Zuluaga-Astudillo ◽  
Hugo Alexander Rondón-Quintana
Keyword(s):  
Latin American ◽  
Landfill Leachate ◽  
Moving Average ◽  
Temporal Structure ◽  
Treatment Plant ◽  
Treatment System ◽  
Arima Models ◽  
Leachate Treatment ◽  
Input Concentration ◽  
Annual Cycles

Leachate has been reported as the most significant source of landfill pollution. Predicting the characteristics of untreated and treated leachate may be useful during optimal scheduling of leachate treatment systems. The objective of this paper is to show an analysis of the operation of a landfill leachate treatment system in a Latin American megacity (Bogota, Colombia) by means of auto-regressive integrated moving average (ARIMA) models. A comparative analysis of the leachate treated with respect to reference legislation is carried out. The influence of climate variables during the operation of the treatment system is also considered. The results suggest that the concentrations of heavy metals (HMs), BOD5, and COD in untreated leachate do not follow the same annual cycles observed for the quantity of solid waste disposed within the landfill. This difference is possibly associated with the hydraulic retention time (HRT) of the leachate inside the conduction and pre-treatment system (storage/homogenization ponds). The ARIMA analysis suggests an HRT of up to one month (AR = 1) for the HMs identified as indicators of untreated leachate (Cu, Pb, and Zn). It is noted that the removal efficiency of HM indicators of the operation of the leachate treatment plant (Fe and Ni) is probably conditioned by operations carried out over a period of one month (AR = 1). The high input concentration of these HM indicators may prevent changing their ARIMA temporal structure during leachate treatment. This is reflected in the low removal efficiencies for all HMs under study (average = 26.1%).

scholarly journals DEVELOPMENT OF AN ENERGY-SAVING LANDFILL LEACHATE TREATMENT SYSTEM BY A COMBINATION OF DHS AND USB REACTORS

2010 ◽  
Vol 66 (1) ◽  
pp. 9-16
Author(s):  
Tsutomu OKUBO ◽  
Yusuke WATANABE ◽  
Kazue OHURA ◽  
Kengo KUBOTA ◽  
Yu-You YLi ◽  
...  
Keyword(s):  
Energy Saving ◽  
Landfill Leachate ◽  
Treatment System ◽  
Leachate Treatment

Sustainable landfill leachate treatment

2020 ◽  
Vol 38 (10) ◽  
pp. 1093-1100
Author(s):  
Yudi Wu ◽  
Boya Wang ◽  
Gang Chen
Keyword(s):  
Landfill Leachate ◽  
Oxygen Demand ◽  
Ammonium Nitrogen ◽  
Treatment System ◽  
Solid Waste Disposal ◽  
Leachate Treatment ◽  
Leachate Collection ◽  
Wetland Treatment ◽  
In Series ◽  
Calcium Magnesium

Landfilling is one of the most widely used forms of solid waste disposal, yet the management of landfill leachate is challenging because of the complex composition and high contaminant concentration. This study provides an on-site treatment system to treat 500 m3 day-1 of the leachate generated from the Perdido Landfill in Escambia County, Florida. The main concerns of the landfill leachate are ammonium-nitrogen, total dissolved solids (TDS) and biological oxygen demand (BOD) from the long-term monitoring (from September 1999 to May 2015). To target these major contaminants as well as other pollutants, we designed a wetland treatment system by fully utilizing the existing facilities at the Perdido Landfill site. The modified wetland treatment system consists of five components in series: leachate collection/aeration ponds, anaerobic ponds, aerobic ponds, wetlands and limestone filter ponds. The leachate collection/aeration ponds provide functions of nitrification as well as ammonia and CO2 stripping. The following anaerobic ponds focus on nitrogen removal by denitrification. The BOD is removed in the aerobic ponds. The TDS are removed in the wetlands and limestone filter ponds. In the wetlands, 60% of chloride and 40% of other contaminants are absorbed by Parthenium sp. In the limestone filter ponds, bicarbonate, calcium, magnesium and iron are removed.

Pyrite-activated persulfate oxidation and biological denitrification for effluent of biological landfill leachate treatment system

2022 ◽  
Vol 304 ◽  
pp. 114290
Author(s):  
Siying Sun ◽  
Jiabao Ren ◽  
Jiale Liu ◽  
Liang Rong ◽  
Hangli Wang ◽  
...  
Keyword(s):  
Landfill Leachate ◽  
Treatment System ◽  
Leachate Treatment ◽  
Persulfate Oxidation ◽  
Biological Denitrification ◽  
Activated Persulfate

scholarly journals Treatability study of two hybrid-passive treatment systems for landfill leachate operated at cold temperature

2011 ◽  
Vol 46 (3) ◽  
pp. 230-238 ◽  
Author(s):  
Sean Speer ◽  
Pascale Champagne ◽  
Bruce Anderson
Keyword(s):  
Landfill Leachate ◽  
Oxygen Demand ◽  
Cold Climate ◽  
Cold Temperature ◽  
Passive Treatment ◽  
Treatment System ◽  
Trickling Filter ◽  
Leachate Treatment ◽  
Wood Shaving ◽  
Treatment Train

Cold ambient temperatures can negatively affect the performance of passive and semi-passive landfill leachate treatment systems and decrease treatment efficiency. Cold temperature leachate treatment efficiencies were compared between a commercially available semi-passive treatment system and a passive peat and wood shaving biological trickling filter. The addition of an active fixed-film pretreatment stage in the treatment train was also assessed. Results indicated that the internal temperature of the peat filters was independent of influent water temperature; exothermic reactions maintained internal system temperatures. It was determined that pretreatment of the leachate did not affect the overall removal of chemical oxygen demand (COD), but did increase nitrification in the subsequent passive treatment systems and allowed for the removal of dissolved inorganic constituents prior to the passive treatment system, which will extend the useful life of the entire treatment train. The hybrid-passive treatment systems reduced COD concentrations by 10 ± 3% and 15 ± 3%, in the semi-passive treatment system and the peat and wood shaving biological trickling filter-based systems, respectively, and indicated that nitrifying biomass was starting to populate the treatment systems. It was therefore concluded that operation of these systems would be feasible under cold climate and should be assessed at the pilot-scale.

Performance of landfill leachate treatment system with disc-tube reverse osmosis units

2008 ◽  
Vol 2 (1) ◽  
pp. 24-31 ◽  
Author(s):  
Yanping Liu ◽  
Xiujin Li ◽  
Baozhen Wang ◽  
Shuo Liu
Keyword(s):  
Reverse Osmosis ◽  
Landfill Leachate ◽  
Treatment System ◽  
Leachate Treatment
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