Strengths

  • Improves water storage of ponds and reservoirs, and prevents pollution of groundwater.
  • Protect the slopes and banks from erosion due to wind and wave action.
  • Eliminates fouling due to soft soil substrates.
  • Lightweight and easy to handle, enabling quick and easy transportation and installation.
  • Durable and robust for easy cleaning without significant surface maintenance requirements.
  • Non-toxic, with low friction and high impact strength.

Limitation

  • Soil samples should be collected from sites under consideration to help determine the type of pond sealer or liner that is needed.
  • For optimal performance, it is critical to get liner measurements correct.
  • Careful preparation of the area to be lined is very important. Take extra care to remove rocks, debris, tree roots or anything else that might cause a puncture during the installation.
  • The pond should be filled immediately after liner installation to stabilize the liner and cover the soil layer.
  • The water level of the pond should be kept at a sufficient level to minimize erosion of earth material covering the liner.

Plastic liner for ponds and reservoirs

Application: Pond, reservoir

Description: In many parts of Cambodia, rainwater is not stored due to inadequate collection and storage facilities. This contributes to water shortage for drinking and other uses. Using synthetic liners in rainwater harvesting ponds improves the effectiveness of rainwater collection and storage, improving availability of water for agriculture, aquaculture and livestock.
Synthetic liners (or ‘geomembranes’) are low-permeability man-made membranes or barriers used to control fluid migration in an earthen storage structure. They can be made of PVC or high density polyethylene. Alloyed polyethylene liners are manufactured to exact standards and provide superior performance in almost any environment due to improved resistance to punctures and tears. Custom engineered fabrication and sizes up to an acre are available to minimize in-field seaming.

Contribution to climate resilience: Plastic liners increase the effectiveness of rainwater harvesting ponds, thus improving drought resilience by increasing the availability of water for agriculture, livestock, and household uses such as washing and laundry. This also reduces pressure on other water sources such as groundwater and reduces costs associated with pumping.

Supplementary sources of information:

Pond Sealing Methods. Warren's - TerraBond Field Manual and Specification Guide. http://www.essenpoly.com/geomembrane_liner.html

Technical Reference Document for Liquid Manure Storage Structures SYNTHETIC LINERS

Background image credit: https://commons.wikimedia.org/wiki/File:Leachate_Pond.JPG

This resilience-building measure is sourced from the Water Resource Adaptation Guide (2019) published by the National Council for Sustainable Development at the Ministry of Environment in Cambodia. The full Guide is available to download at URL https://ncsd.moe.gov.kh/sites/default/files/2019-10/Water%20Resources%20Adaptation%20Guide_March%202019_En.pdf