ORIGIN OF ELEVATED ARSENIC IN POSSIBLE LANDFILL LEACHATE IN THE AUSTIN CHALK, NORTH TEXAS: BIOGENIC REDUCTION OF IN SITU IRON SULFIDES?

2018 ◽  
Author(s):  
Jackie D. Horn ◽  
◽  
Tom Brikowski
Keyword(s):  
Landfill Leachate ◽  
Iron Sulfides ◽  
North Texas ◽  
Austin Chalk

scholarly journals Nitrogen removal from recycled landfill leachate by ex situ nitrification and in situ denitrification

2006 ◽  
Vol 26 (8) ◽  
pp. 838-845 ◽  
Author(s):  
P.J. He ◽  
L.M. Shao ◽  
H.D. Guo ◽  
G.J. Li ◽  
D.J. Lee
Keyword(s):  
Nitrogen Removal ◽  
Landfill Leachate ◽  
Ex Situ

Biological Treatment of High Ammonium Content Urban Landfill Leachate Using an Anaerobic-Aerobic Process

2013 ◽  
Vol 781-784 ◽  
pp. 2095-2099
Author(s):  
Hong Wei Sun ◽  
Yong Jun You ◽  
Ying Guo
Keyword(s):  
Landfill Leachate ◽  
Inhibitory Effect ◽  
Nitrifying Bacteria ◽  
Anaerobic Sludge ◽  
Nitrite Accumulation ◽  
Fish Analysis ◽  
Free Nitrous Acid ◽  
Nitrite Oxidizing Bacteria ◽  
Anaerobic Sludge Blanket

Biological system consisting of an up-flow anaerobic sludge blanket (UASB) and anoxic-oxic (A/O) reactor was applied to treat high ammonium content urban landfill leachate. Inhibitory effect of free ammonia (FA) and free nitrous acid (FNA) on nitrifying bacteria activity was used to achieve nitrogen removal via nitrite pathway in the A/O. Results demonstrated that removed efficiencies of COD, total nitrogen (TN) and NH4+-N were 95.3%, 84.6 %and 99.2%, respectively. Stable nitrite pathway with above 90% nitrite accumulation was successfully achieved in the A/O reactor by synergetic inhibition of FA and FNA on the activity of nitrite oxidizing bacteria (NOB). Moreover, Fluorescence in situ hybridization (FISH) analysis showed that AOB was dominant microorganism.

Nitrogen removal from landfill leachate via ex situ nitrification and sequential in situ denitrification

2009 ◽  
Vol 29 (4) ◽  
pp. 1347-1353 ◽  
Author(s):  
Qi Zhong ◽  
Daping Li ◽  
Yong Tao ◽  
Xiaomei Wang ◽  
Xiaohong He ◽  
...  
Keyword(s):  
Nitrogen Removal ◽  
Landfill Leachate ◽  
Ex Situ

In‐Situ Treatment of Landfill Leachate with Permeable Reactive Barriers

2016 ◽  
Author(s):  
Robert Boyes
Keyword(s):  
Landfill Leachate ◽  
Health Problems ◽  
Permeable Reactive Barriers ◽  
Permeable Reactive Barrier ◽  
Hazardous Wastes ◽  
Food Wastes ◽  
Reactive Barrier ◽  
Viable Solution ◽  
Reactive Barriers

As precipitation percolates through a landfill, it comes in contact with decomposing waste ranging from food wastes to factory wastes even to hazardous wastes. That water can then leach elements from the wastes and become contaminated forming what is typically called landfill leachate. Leachate has the potential to cause many health problems if allowed to reach the groundwater and every effort is made to slow and minimize its effect. The most common way of dealing with leachate is to pump it out of the base of the landfill with a series of pipes and pumps, but what about the treatment of the leachate in‐situ through the use of a permeable reactive barrier? Is it a viable solution?

Preparation of hydrophilic PVDF/PPTA blend membranes by in situ polycondensation and its application in the treatment of landfill leachate

2015 ◽  
Vol 346 ◽  
pp. 134-146 ◽  
Author(s):  
Hongbin Li ◽  
Wenying Shi ◽  
Yufeng Zhang ◽  
Rong Zhou ◽  
Haixia Zhang
Keyword(s):  
Landfill Leachate ◽  
Blend Membranes
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