Memelakha landfill challenged with leakages of leachate
Although the existing Memelakha landfill has reached its saturation point but the Thimphu Thromde official said that it will not relocated the landfill else but will rather extended the existing landfill with construction of leachate tanks.
Along with the waste in the landfill, the biggest challenges faced by the landfill are the leakages of the leachate ( the black water) which is coming from the waste. Thimphu Thromde, Chief Envi- ronment Officer, Mr. Tshering Penjor, said that because the land fill is located in the gorges and two hill slopes are converging at the base, so all the rain water are connecting to the waste dumping site. That’s way there are lots of leakages of leachate.
For that he added that in collaboration with Japan Environmental and Sanitation Center ( JESC), the Thimphu Thromde has con-
structed four leachate tanks and gabion wall to protect the waste following downstream, small sanitary landfill, black topped the approach roads towards the landfill. The project was handled by JESC.
In the south of the landfill with one tank which did not serves the purpose , the Thromde has had dug one pit adjacent to the existing landfill, which also could not serve the purpose which is next to the road side now have constructed the another RCC chamber. The official added that with this mechanism put in place this year his year the leakages of leachate will not fall on the road.
In the north another 1, 50,000 liter capacity of tank has been constructed. “The leachate generated from the waste is not a really problem but overflow being triggered by the rain especially during the summer season, that’s the biggest problem”, said the Chief Environment officer added.
But with regards to the relocation of the land fill, through this project, small area adjacent to the existing land fill which will serve the dual purpose of reinforcement wall of previous landfill and landfill as well.
Through the study done by the Japan International Corporation Agency ( JICA), it shows that the existing landfill can be extent provided the National Environment Commission (NEC) provides the necessary clearance as NEC clearance is mandatory and necessary.
Meanwhile, he also added that the Thromde has started operation of the transfer station at Ngabe Rongchu which will really reduce the waste load of the existing landfill.