A platform for research: civil engineering, architecture and urbanism
A platform for research: civil engineering, architecture and urbanism
MUNICIPAL SOLID WASTE LANDFILL BARRIER SYSTEM CAPABLE OF PROLONGING BREAKTHROUGH TIME OF LEACHATE AND MANUFACTURING METHOD THEREOF
The invention relates to a refuse landfill impervious system capable of prolonging breakdown time of leachate and a manufacturing method thereof. The system comprises a leachate collection and drainage layer, a first HDPE (high-density polyethylene) geomembrane impervious layer, a clay layer and a groundwater collection and drainage layer which are sequentially stacked from top to bottom. The clay layer is composed of a lower clay layer, a middle clay layer and an upper clay layer which are sequentially arranged, wherein the middle clay layer is filled with a medium-fine sand layer laid with sands of particle sizes ranging from 0.1 mm to 0.5 mm and of water contents ¤ 3%, wherein the saturated permeability coefficient of the medium-fine sand layer varies from 1×10 -5 to 1×10 -3 cm/s. Therefore, breakdown time of the leachate can be greatly prolonged, and the imperious effects of a refuse landfill impervious layer can be enhanced; meanwhile, the medium-fine sands are readily available as they are low in cost and widely spread in China. The refuse landfill impervious system capable of prolonging breakdown time of the leachate has a simple structure and is able to effectively prevent the groundwater from permeating in order to saturate the medium-fine sand layer, keeping the medium-fine sand layer in an unsaturated state all the time.
MUNICIPAL SOLID WASTE LANDFILL BARRIER SYSTEM CAPABLE OF PROLONGING BREAKTHROUGH TIME OF LEACHATE AND MANUFACTURING METHOD THEREOF
The invention relates to a refuse landfill impervious system capable of prolonging breakdown time of leachate and a manufacturing method thereof. The system comprises a leachate collection and drainage layer, a first HDPE (high-density polyethylene) geomembrane impervious layer, a clay layer and a groundwater collection and drainage layer which are sequentially stacked from top to bottom. The clay layer is composed of a lower clay layer, a middle clay layer and an upper clay layer which are sequentially arranged, wherein the middle clay layer is filled with a medium-fine sand layer laid with sands of particle sizes ranging from 0.1 mm to 0.5 mm and of water contents ¤ 3%, wherein the saturated permeability coefficient of the medium-fine sand layer varies from 1×10 -5 to 1×10 -3 cm/s. Therefore, breakdown time of the leachate can be greatly prolonged, and the imperious effects of a refuse landfill impervious layer can be enhanced; meanwhile, the medium-fine sands are readily available as they are low in cost and widely spread in China. The refuse landfill impervious system capable of prolonging breakdown time of the leachate has a simple structure and is able to effectively prevent the groundwater from permeating in order to saturate the medium-fine sand layer, keeping the medium-fine sand layer in an unsaturated state all the time.
MUNICIPAL SOLID WASTE LANDFILL BARRIER SYSTEM CAPABLE OF PROLONGING BREAKTHROUGH TIME OF LEACHATE AND MANUFACTURING METHOD THEREOF
SICKERSCHUTZSYSTEM EINER DEPONIE ZUR VERLÄNGERUNG DER DURCHDRINGUNGSZEIT VON SICKERWASSER UND HERSTELLUNGSVERFAHREN DAFÜR
SYSTÈME ANTI-INFILTRATION DE DÉCHARGE PERMETTANT DE PROLONGER LA DURÉE DE PÉNÉTRATION DE LIXIVIAT ET PROCÉDÉ DE FABRICATION DE CELUI-CI
ZHU WEI (author) / SHU SHI (author) / WANG SHENGWEI (author) / XU HAOQING (author) / FAN XIHUI (author) / BAO JIANPING (author) / MIN FANLU (author)
2019-10-23
Patent
Electronic Resource
English
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