The treatment of landfill leachates in on-site aerated lagoon plants: Experience in Britain and Ireland

Two­stage treatment of solid waste leachates in aerated lagoons and at municipal wastewater treatment plants

“…The achieved degree of leachate treatment [13][14][15] is acceptable for further treatment at municipal wastewater treatment plants.…”

“…In our opinion, based on the above analysis, the treatment technology in an aerobic medium under the conditions of aerated lagoons [11][12][13][14][15] is the most promising for treatment of the Hrybovytsky dump leachate. Analysis of the known information on its industrial application abroad suggests that this technology can be effectively applied at the first (preliminary) stage of treatment of the Hrybovytsky dump leachates.…”

“…Work [13] shows the results of successful use of an aerated lagoon for treatment of leachates of the Bryn Posteg (Wales) MSW landfill launched in 1982. From July 1983 until January 1986, the 1,000 m 3 volume aeration lagoon treated about 26,000 m 3 leachates which averaged 900 m 3 /month or 30 m 3 /day.…”

“…The lagoon was equipped with two floating surface aerators of 11 kW each. The period of leachate treatment in the aerated lagoon was, as a rule, not less than 10 days, the process was carried out almost in a completely automatic mode [13]. Sewage treated in the aerated lagoon was re-pumped by an automated sewage pumping station (SPS) in a 3-km long pressure pipeline into the sewer collector and then arrived at small rural Llanidloes WWTP.…”

Study of Biological Methods in Landfill Leachate Treatment

“…Partial of 80% removal of nitrogen in aerated Lagoon was done by ammonia evapora- Moving-bed biofilm reactor (MBBR) 800 -2000 20 [24] 7500 -7900 8 [25] Membrane bioreactor (MBR) 1000 -3000 80 -83 [26] 1550 63 [20] 14,000 80 [27] aerobic sequencing batch reactor (ASBR) 4000 87 [21] 3200 30 [28] Aerated lagoons 1740 75 [22] 5518 97 [29] tion [22]. In another study, the use of this method in leachate treatment led to the removal of 97% COD and 92% ammonia nitrogen [29]. The COD removal by different biological methods, are listed in Table 3.…”