The effect of activated sludge treatment and catalytic ozonation on high concentration of ammonia nitrogen removal from landfill leachate

Reprocessing and Resource Utilization of Landfill Sludge—A Case Study in a Chinese Megacity

“…Comparatively, the concentration of nitrogen in sludge landfill leachate is typically even higher than that in traditional solid waste landfill leachate [12]. Some researchers have used chemical and biological technology to remove ammonium nitrogen from landfill sludge leachate [13][14][15][16][17]. It is worth noting that biological treatment methods, such as the activated sludge process, usually cost too much energy and occupy a large land area.…”

Maximizing bio-methane potential from municipal landfill leachate through ultrasonic pretreatment

“…Nonetheless, their exploitation has impacts on the environment, such as the requirement of large areas of land, emissions of gaseous pollutants (H 2 S, CH 4 ), and the generation of large volumes of leachate [ 1 ]. Leachate generated by the waste remains one of the most difficult pollutants to treat, it is defined as the water that percolates through the landfill waste that is loaded bacteriologically and chemically by mineral and organic substances, their composition depends mainly on the source of the landfill content and the quantity of precipitation, and the age of the landfill [ 2 , 3 ]. A number of different treatment approaches have been applied for leachate processing, various natural treatment methods such as coagulation and flocculation, infiltration percolation, advanced oxidation processes (AOP), nitrification and denitrification, and anaerobic digestion [ [4] , [5] , [6] , [7] ].…”