Effectiveness Assessment of Using Calcium Peroxide to Purify Landfill Leachate From Contaminants

Abstract

The effectiveness of using calcium peroxide (CP) to clean the filtrate of solid waste landfills from organic and inorganic contamination was studied under laboratory conditions using samples from one of the landfills as an example. The degree of purification was assessed depending on the size of the reagent addition at CP/filtrate ratios of 1/100, 1/50, 1/20, 1/10 and the duration of its contact with the filtrate from 1 to 3 days. The data obtained indicate an improvement in the quality of wastewater as a result of treatment with calcium peroxide: a decrease in the concentration of heavy metals, inorganic anions, COD, etc. The results of the study indicate the prospects of using PC at the initial stage of purification of the MSW filtrate.