. Site description and samplingIn t

. Site description and sampling
In this study, PP and MP landfill leachates as well as SU and CU
wastewaters were collected from an MSWP situated in the
Pomerania region of northern Poland (Fig. 1). The MSWP serves a
metropolitan area of approximately 460,000 people and receives
ca. 190,000 Mg of waste per year, of which 130,000 Mg is municipal
and 97,000 Mg is biodegradable. In recent years, the studied
MSWP has undergone extensive modernization to achieve the
mandated reduction in the landfilling of biodegradable waste,
reaching 25% and 50% of the 1995 level (63,493 Mg) in 2010 and
2013, respectively. In spring 2010, the sorting and recycling of solid
wastes and the composting of their organic fraction were introduced
(Fig. 1). However, it should be noted that solid waste segregation
(into paper, glass, plastic and mixed) was made a household
obligation in the tested area in January 2013.