基于分区多点供电的填埋场渗漏实时检测系统研究

Landfill Real Time Leakage Detection System Based on Subarea Multipoint Power Supply

针对现有填埋场渗漏检测系统在检测大面积填埋场时存在的检测成本高、电极铺设困难和定位不精确的实际问题,设计了一种新型填埋场实时渗漏检测系统,该系统采用分区检测、多点供电的方式采集检测电极电势,并通过定位算法定位漏洞。该系统在大大降低了大面积填埋场渗漏检测成本的同时,也提高了定位精度。通过在中国环境科学研究院内小型填埋场做模拟实验验证,在膜上供电电流400 mA、膜下电极栅格间距10 m、膜下媒质电阻率50Ω·m的情况下,系统的定位精度可达到20 cm。该系统为垃圾填埋场的科学管理和减少环境污染提供了新的科学技术手段。

A new landfill real time leakage detection system is devised,which collects potential of detection electrodes through subarea multipoint power supply mode and locates leakage through positioning algorithm,to solve the practical problem that the existing system which is costly,hard to lay electrodes and has low location accuracy when detecting large landfills.The system greatly reduces the detection cost as well as improves the location accuracy in large landfill leakage detection.Through simulated experiment validating in small landfill of CRAES,it indicated that the location accuracy could be up to 20 cm on the condition that the current of power supply electrode above HDPE 400 mA,electrode grid spacing 10 m and medium resistivity 50 Ω·m under HDPE.The system would provide new technology for scientific management of landfill and reduce environment pollution.