DESIGN OF LEACHATECOLECTING AND RECICULATION SYSTEM IN WASTERN ACTIVE LANDFILL ( FEWPART OF ZONA 1,4 AND 5) TPST BANTAR GEBANG, BEKASI
The majority of landfills in Indonesia generally use open dumping systems with lack of liner system and proper leachate underdrain system. Similar problems occur at TPST Bantargebang. TPST Bantargebang has a leachate collection system in the form of a u-ditch concrete channel that surrounds the land...
Saved in:
| Main Author: | |
|---|---|
| Format: | Final Project |
| Language: | Indonesia |
| Online Access: | https://digilib.itb.ac.id/gdl/view/42336 |
| Tags: |
Add Tag
No Tags, Be the first to tag this record!
|
| Institution: | Institut Teknologi Bandung |
| Language: | Indonesia |
| Summary: | The majority of landfills in Indonesia generally use open dumping systems with lack of liner system and proper leachate underdrain system. Similar problems occur at TPST Bantargebang. TPST Bantargebang has a leachate collection system in the form of a u-ditch concrete channel that surrounds the landfill and flowed into three Leachate Treatment Plants (LTP). Based on the observations there are several locations where leachate in the channel has flowed directly towards Asem River and the capacity of the existing LTP are often exceeded when it rains with high intensity. In 2019, TPST Bantargebang has a plan to build an additional LTP unit, but based on the water balance calculation using the Thorntwaite method, the value of leachate generation in the wet and dry months are 1,130.52 x 103 l/day and 407.68 x 103 l/day while the planning of new LTP capacity is 168.88 x 103 l/day. Based on these results it is necessary to design a leachate flow management system so that the leachate generation occurred during peak hours can be accommodated. The method used in recirculation is surface recirculation equipped with sprinklers. Based on several considerations, especially the occurrence of leachate interflow in several landfill’s slope locations, it was determined that the calculation of leachate discharge which had an effect on the channel design came from interflow and runoff discharge. Rational method is used to obtain runoff discharge and Thontwaite method is used to obtain interflow discharge. Based on the consideration of the existing conditions the selected 6 types of channel designs used in the design are concrete u-ditch with cover, concrete u-ditch without cover, pavement channel, trapezoid-geomembrane channel, box culvert, and HDPE pipelines. |
|---|