Supervision Only - To save you on installation costs many companies can provide you with just one or two highly qualified installation supervisors to assist you in the task of installing your liner. You can use your labor force to accomplish the installation and the supervisor will work side by side with your staff to train them on how to install large panels of material and then seal the seams. You can even purchase or rent installation equipment if you choose too.

Find a company that can offer turn-key project options including: Engineering, design, earthwork, pumps and pumping systems, aeration, de-watering and sludge removal, pond and lake lining, rock walls and water feature work can all be available and coordinated by contacting just one full service geosynthetic contractor.

Landfill engineering and containment is a task that demands precise planning and the use of materials to prevent chemicals from leaching into the environment. It's a known fact that poor waste containment can contaminate water and soil quality to lead to poor health. Using geomembranes in landfill engineering can significantly reduce this.

Geomembranes are polymeric sheets made of PVC, polyethylene, synthetic rubber and similar materials. They're known for their impermeability to control fluid and gas from leaking into environments. They're mostly used as liners for waste liquids, golf course water holes, water and waste conveyance canals and to waterproof rockfill dams, concrete dams, pipelines and tunnels. This ability to contain fluid and gas makes them fundamental tools in waste management.

Like all man-made materials, in order for geomembranes to successful waterproof and contain materials, they must be made of high quality products. Repeated testing and field tests produce accurate readings while installation by trained and certified personnel ensures that membranes work to full capability.

Geomembranes vary in chemical resistance, flexibility and cost depending on what material is used to construct them. Here's a look at the properties of different grades of plastic and rubber and what they offer.

HDPE: High density polyethylene is known for being relatively inexpensive but with good chemical resistance and weld strength. However, it has low puncture resistance, may crack under stress and has a high degree of thermal expansion.

PVC: Polyvinyl chloride or PVC can have fabricated seams, has good layflat behavior and is easy to seam. Conversely, it doesn't fare well under high and low temperatures and doesn't resist UV light well.

fPP-R: fPP-R, a polypropylene and rubber-based material, can be factory fabricated and has sound multiaxial properties. It handles strain well and maintains performance under low and high temperatures. However, chlorinated water and hydrocarbons weaken strength and durability.

LLDPE: Linear low density polyethylene is flexible, has better layflat and better multiaxial strain properties compared to HDPE. These benefits are balanced by poorer chemical and UV resistance, benefits offered by HDPE.

EPDM: EPDM or ethylene propylene diene monomer is a synthetic rubber known for its sealing characteristics. In geomembranes, it shows good performance in low temperatures, very goof layflat behavior and sound resistance to UV light. What it lacks is a resistance to oils and hydrocarbons in addition to having less than satisfactory seam quality.

Butyl rubber: Also a synthetic rubber, butyl rubber shows good resistance to UV light and weathering. Its drawbacks include difficulty seaming, low tear strength and poor resistance to hydrocarbons.

Irrespective of what type of geomembrane is used, landfill preparation is crucial to deciding how effective liners are. For instance, sharp objects must be removed from the area as even if the membrane resists punctures well, weather conditions and chemicals will cause it to wear down over time.

When combined with geotextiles - plastic fabrics that separate water, waste and soil - geomembranes see increased resistance to tears and containment. In fact, most landfills lined with membranes are used in conjunction with geotextiles.

Geomembranes are also used in leachate ponds to prevent leachate from seeping into soil. A drainage system, filters, sumps and pumps are used and all components including the health of the membranes must be monitored since waste decomposes unevenly, buckles and distorts pipelines. If proper planning, execution and maintenance of leachate ponds is neglected, not only will waste seep into soil but gas production will increase.

HDPE Liner is supplied by many companies having special characteristic features and use. Thickness of these HDPE high density liner pipe ranges from 0.5 mm to 2.5 mm (including 0.75 mm, 1.0 mm, 1.5 mm and 2.0 mm). Rolls of the HDPE pipe liner are twenty three feet wide. But the length of these pipes vary due to the thickness of the membranes. Most demanding applications always need these HDPE Liner pipes due to their high chemical resistibility as well as high tensile strength. In addition, resistance to stress crack along with low temperature characteristic features make these liners most appropriate for containment. The basic property of these liners also include inertness to chemicals and resistance to hydrocarbons. This is what makes them the most standard product in reliable containment functioning.

Basic and Important features of HDPE Liner

Some of the very important as well as basic characteristic features of High Density Polyethylene pipeliners are:

1. Permeability is low: Leachets are not able to penetrate the pipelining system of polyethylene of high density. This makes the system safe and secure. Thus, on one hand, it does not allow methane gas to escape the pipe and on the other, does not allow rainwater to seep into the HDPE liner.

2. Resistance to chemicals: The linings constructed out of high density polyethylene are highly resistant to chemicals and thus it is not threatened by any sort of leachate of hazardous waste or solid. Thus, these linings are most suitable for secondary containment of storage facilities for chemicals and sludge.

3. Increased resistance to ultraviolet: If carbon black is added then the UV exposure resistance increases manifold. Volatilization of the material is not at all a problem as the plasticizers are absent.

4. Reflectivity as a factor: Geomembranes of HDPE are available in both black and white. The white surface helps in visual inspection and also in mitigating the temperature extremes of pipe liner.

Usage of HDPE liner in Various Applications

There are many applications where these liners are used and some of them are landfill closures / caps, liners of lagoon, primary as well as secondary containment landfill, liners of pond as well as agricultural ponds, reservoirs of portable water, canal linings, tank linings, retention pond and many more.

What are the special features of high density polythylene that makes it long lasting?

The first and foremost characteristic feature of these pipes are its resilient nature. Long term service is ensured through the installation of these pipes. The advanced engineering is the sole reason behind durability of these pipes. The engineering technology used in production of HDPE popes is called Process Intensification (PI). There are basically two advantages of this technologically advanced engineering and they are:

a) Reaction rate enhancement

b) Lessening of the energy consumption