Efficiency of two-stage aerobic-reagent technology for the pre-treatment of different age leachates of municipal solid waste landfills
Myroslav S. Malovanyy, Volodymyr Zhuk, Ivan S. Tymchuk, Ruslan Grechanik, Andriy Sereda, Vira Sliusar, Anastasiya Marakhovska, Nataliya Vronska, Olena Кharlamova, Volodymyr Heletiy · Case Studies in Chemical and Environmental Engineering · 2022
Experimental lab-scale results on the efficiency of two-stage aerobic-reagent technology of leachate pre-treatment for different age leachates on examples of medium-to-old age leachate of Chervonohrad MSW landfill and young-to-medium leachate of Hrybovychi MSW landfill (Lviv region, Ukraine) are presented in the paper. Kinetics of aerobic pre-treatment of leachates is approximated using the simple exponential model and two-parameter modified exponential model. Optimal dosage of aqueous reagent solutions of polyacrylamide, aluminium sulphate, iron (II) sulphate and hydrogen peroxide are obtained experimentally. Treatment effects at optimum dosage reach 95.9% by ammonium nitrogen and 90.2% by COD allowing discharge of pre-treated leachates to WWTP.