Waterproofing of the ash and slag storage facility at Primorskaya TPP

Waterproofing of the ash and slag storage facility at Primorskaya TPP
Installation of a seepage-control liner and cut-off curtain, plus slope reinforcement for drainage ditches at a thermal power plant ash and slag disposal site using geosynthetics.
Customer
Inter RAO – Engineering LLC
Implementation dates
2019 – 2020 гг.
Location
Kaliningrad Region, Svetly Urban District, Vzmorye settlement
  • Task

    Installation of a waterproofing system for a new storage facility for waste generated by coal combustion at a thermal power plant, to prevent the infiltration of hazardous substances into the soil. 

    Solution

    Waterproofing of the ash and slag storage facility base with the «Бентотех АСЛ» bentonite mat, in which bentonite clay is placed between woven and nonwoven geotextiles bonded to a 0.8 mm thick geomembrane. A barrier made of this material prevents toxic substances from entering the soil beneath the storage facility.  

    The cut-off curtain made of Геошпунта, installed around the perimeter of the ash and slag storage facility, blocks groundwater and prevents erosion of the site base. 

    The slopes of the drainage ditches were reinforced using a three-dimensional geogrid, which follows the surface profile and provides erosion protection for the embankment. 

    Technology Advantages
    • Proven technical solution for waterproofing the base of a hazardous substances storage facility 
    • All geosynthetic materials from one manufacturer — cost-effective and convenient
    • Certificates of conformity for all manufactured products
       

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