Abstract
The hydrochemical composition of waste percolating water (leachate) generated in MSW landfills was investigated and analyzed. On the example of the MSW landfill in the city of Zhytomyr (Ukraine), the component percentage in the leachate was determined. The initial data for the research were hydrochemical indicators of leachate samples from dumps of the landfill for the period 2009–2016. The analysis of the leachate revealed the component percentage. It was found that chemicals such as phosphates, iron, cobalt, cadmium, lead, chemical and biochemical oxygen demand, alkalinity and hardness indicators of leachate in Zhytomyr MSW landfill exceed the maximum permissible concentrations. The experimental data were obtained, and their features, summarized in the form of regression equations and corresponding approximating curves, which give information on the dynamics of quantitative composition of chemical components in leachate samples from the landfill sumps were identified. The reliability coefficients of these equations were found. The resulting regression equations are the basis for forecasting the pollution processes of percolating water of Zhytomyr MSW landfill. These models will also contribute to the development and implementation of practical measures for decontamination of leachate from MSW landfill sumps, minimization of harmful effects on the hydrosphere in the final stages of the landfill life cycle.
Highlights
Municipal waste accumulation, recycling and disposal remain a difficult problem in Ukraine due to the lack of evidence-based solutions regarding environmental engineering protection
An essential element of municipal solid waste (MSW) management is the management of solid waste provided for recycling, which will reduce the amount of waste at dumps and give financial support for waste collection
It was found that the negative impact of MSW landfills on water resources is a worldwide problem
Summary
Municipal waste accumulation, recycling and disposal remain a difficult problem in Ukraine due to the lack of evidence-based solutions regarding environmental engineering protection. An essential element of municipal solid waste (MSW) management is the management of solid waste provided for recycling, which will reduce the amount of waste at dumps and give financial support for waste collection Such activities require the support of a local community, which needs the introduction of environmental education. To prevent ingress of toxic substances into the environment, measures should be developed for reducing the amount of leachate through proper MSW landfilling and decontamination of leachate that is accumulated in the landfill sumps To address these two urgent problems, information on the hydrochemical composition of leachate on the example of MSW landfill sumps in Zhytomyr (Ukraine) was analyzed and mathematical models of the dynamics of the hydrochemical composition of leachate were developed in the paper. This has allowed predicting the amount and composition of leachate for the year and developing recommendations on the MSW landfill operation and measures for leachate decontamination in sumps
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