A platform for research: civil engineering, architecture and urbanism
A platform for research: civil engineering, architecture and urbanism
Biochar composite three-layer capillary barrier system suitable for refuse landfill
The invention discloses a biochar composite three-layer capillary barrier system suitable for a refuse landfill. According to the technical scheme, the biochar composite silt, the fine aggregate layer and the coarse aggregate layer are arranged from top to bottom. The capillary covering layer suitable for the refuse landfill has two main functions of reducing rainfall or external moisture entering the landfill and controlling release of landfill gas. The capillary blocking effect between the fine grain layer and the coarse grain layer of the capillary blocking system can prevent water in the upper soil body from permeating downwards within a certain matrix suction range, and meanwhile, due to the fact that the high water content at the capillary blocking interface can block a gas transmission channel, upward migration of gas generated below the covering layer under the pressure gradient can be blocked. In addition, methane-oxidizing bacteria in the covering layer have an emission reduction effect on landfill gas.
本申请公开了一种适用于垃圾填埋场的生物炭复合三层毛细屏障系统。本技术方案中，从上到下分别为生物炭复合粉土，细骨料层和粗骨料层。适用于垃圾填埋场的毛细覆盖层的主要功能包含两点：一是要减少降雨或外来水分进入填埋场内部，二是要控制填埋气体的释放。毛细阻滞系统细粒层和粗粒层之间的毛细阻滞作用会在一定基质吸力范围内阻止上层土体中的水分向下入渗，同时由于毛细阻滞界面处的高含水率会堵塞气体传递通道，覆盖层下方产生的气体在压力梯度下向上的迁移也会收到阻碍。此外，覆盖层当中的甲烷氧化菌对填埋气有减排作用。
Biochar composite three-layer capillary barrier system suitable for refuse landfill
The invention discloses a biochar composite three-layer capillary barrier system suitable for a refuse landfill. According to the technical scheme, the biochar composite silt, the fine aggregate layer and the coarse aggregate layer are arranged from top to bottom. The capillary covering layer suitable for the refuse landfill has two main functions of reducing rainfall or external moisture entering the landfill and controlling release of landfill gas. The capillary blocking effect between the fine grain layer and the coarse grain layer of the capillary blocking system can prevent water in the upper soil body from permeating downwards within a certain matrix suction range, and meanwhile, due to the fact that the high water content at the capillary blocking interface can block a gas transmission channel, upward migration of gas generated below the covering layer under the pressure gradient can be blocked. In addition, methane-oxidizing bacteria in the covering layer have an emission reduction effect on landfill gas.
本申请公开了一种适用于垃圾填埋场的生物炭复合三层毛细屏障系统。本技术方案中，从上到下分别为生物炭复合粉土，细骨料层和粗骨料层。适用于垃圾填埋场的毛细覆盖层的主要功能包含两点：一是要减少降雨或外来水分进入填埋场内部，二是要控制填埋气体的释放。毛细阻滞系统细粒层和粗粒层之间的毛细阻滞作用会在一定基质吸力范围内阻止上层土体中的水分向下入渗，同时由于毛细阻滞界面处的高含水率会堵塞气体传递通道，覆盖层下方产生的气体在压力梯度下向上的迁移也会收到阻碍。此外，覆盖层当中的甲烷氧化菌对填埋气有减排作用。
Biochar composite three-layer capillary barrier system suitable for refuse landfill
一种适用于垃圾填埋场的生物炭复合三层毛细屏障系统
LI LIHUA (author) / MAO WANG (author) / XIAO HENGLIN (author) / MA QIANG (author) / LIU YONGLI (author) / TAO GAOLIANG (author) / HE JUN (author) / WAN JUAN (author) / BAI YUXIA (author)
2023-01-10
Patent
Electronic Resource
Chinese
IPC:
E02D
FOUNDATIONS
,
Gründungen
Refuse landfill flexible barrier wall construction method suitable for high water level condition
| European Patent Office | 2022
Double-layer anti-seepage system for refuse landfill engineering
| European Patent Office | 2023