Commercial Pond Liner for Potable Water Reservoir Project in Australia

The United Kingdom includes the island of Great Britain, the north­eastern part of the island of Ireland, and many smaller islands within the British Isles. Northern Ireland shares a land border with the Republic of Ireland. Our Australian partner specializes in service reservoir refurbishment and regularly work with water authorities and utilities companies throughout the Australian and Europe. And they have vast experience in providing safe and effective solutions to water storage systems, in particular, potable water / drinking water reservoir lining projects.

The Best Project Material Co., Ltd (GEOSINCERE) is the leading geomembrane manufacturer, supplier, wholesaler and exporter. GEOSINCERE geomembrane pond liners are widely used across a variety of industries including waste, water, aquaculture, mining, power plant, industrial and civil engineering, etc. GEOSINCERE brand geomembrane products are made of finest quality high-density polyethylene (HDPE) with specially formulated, virgin polyethylene resin by the advanced automatic production lines and advanced pressing technology. GEOSINCERE also has vast experience in providing safe and effective solutions to water storage systems, in particular, potable water / drinking water reservoir lining projects.

Potable water reservoirs require an impermeable roof structure to prevent leakage and contamination leaking in through the roof and into the reservoir. The commercial pond liner can be installed over the existing concrete surface. The underground reservoir roof will be landscaped in order that it blends into the surrounding environment. Technicians are able to provide waterproofing systems to suit specific site applications.

Installation of Commercial Pond Liner

Installing geomembrane lining systems is a complicated process that is generally carried out by trained engineers and technicians. Various specialized welding techniques, site preparation, and installation expertise are required to ensure that any geomembrane liner is properly employed. The following is a general, yet illustrative, geomembrane liner installation process:

Quality Assurance Inspection. The following items are reviewed to ensure quality geomembrane installation:

• Surface conditions met all requirements before the lining was laid
• The geomembrane rolls were deployed and identified correctly
• The anchor system was done correctly
• The anchor trench and the placement of the lining were all done correctly
• The correct welding equipment was used
• The quality control devices were operating correctly
• Verified the fusion welding seaming and/or extrusion welding seaming
• All repairs were completed
• Correct pipe penetration
• The seam crossings were accurate
• The installation was done per the original design
• The documentation of the installation was completed

Quality assurance is an ever present standard: before, during and once the project is complete. Supervisors maintain a presence on the work site at all times to ensure that all the geomembrane installation procedures are correctly implemented. Detailed logs are maintained to record work progress, as well as any issues that occur and how they were resolved. In turn, these records are reviewed by a field manager, providing one further layer of quality assurance inspection.

Relevant Regulations

Quality standards are crucial when purchasing geomembrane liner for your project. HDPE geomembrane’s physical properties such as tensile strength and tear resistance are calculated based on test methods specified by ASTM and GSI.  the American Society of Testing and Materials (ASTM) is responsible for the bulk of generic geomembrane test methods.  Geosynthetic Institute (GSI) is a group of organizations involved in geosynthetics. They provide comprehensive standards, specifications, guidelines and practices for all types of polymeric geosynthetic materials through Geosynthetic Research Institute (GRI.) GSI includes test methods that are not addressed by ASTM.

Manufacturing Process of HDPE Geomembrane Liner

The process begins by choosing the suitable polymer resin which is normally in pellet form. Next, different additives such as carbon black, plasticizers, antioxidants and lubricants are added. The formulation of resin and additives are then fed into a hopper which leads to an horizontal extruder. This formulation is transported via a continuous screw through feed section, compression, metering and filtering stages, after which it is pressure fed into a die to create sheets of varying widths and thicknesses by calendaring.  Additives are added in the formulation to prevent oxidation and increase durability. Carbon black is sometimes added to the formulation to improve its stability under ultraviolet light, making black HDPE one of the most UV resistant products on the market.  Geomembrane Durability. Several factors affect the degradation of polymers within the HDPE geomembrane liner. Factors like UV exposure, chemical impact, biological contaminants (animal, fungi) and thermal expansion impact the life span of the geomembranes.  Technical expertise is necessary when selecting the right type and thickness for the project. This is generally based on the depth of the containment and the geo technical conditions of the site.  Please see the corresponding depth and thickness chart for a general overview. This is for guidance only, speak to one of our technical consultants for advice relevant to your requirements.

Conclusion

Determining the best type of geomembrane for your project can be challenging. Several factors such as cost, availability and applicability come into play.  Of all the geomembrane types, HDPE is the most recommended because of its operational advantages. It complies with the environmental sustainability requirements, is cheaper than other geomembrane types and has a variety of applications. With its excellent mechanical qualities and long durability, HDPE geomembrane is a cost-effective solution for seepage control and leakage prevention in reservoirs and dams.