About okeotech:

• Oekotech segment of technical textiles is dedicated in Ecological Engineering.
• The primary segment in this is Landfill waste management.
• This refers to the use of Geosynthetic goods to safe landfills against leakage of metropolitan or harmful waste.
• Other areas include secondary protection in Chemical/Oil Industries (ground covers and the like around process tanks for secondary containment should the tanks leak).
• A modern engineering landfill has the following components –
• A basal lining system to prevent the contamination of soil, and ground water by pollutants,
• A capping system to seal the waste when the capacity of the landfill is exhausted,
• An impervious sealing layer which prevents the entry of pollutants in the ground,
• A leach ate collection system for the collection and transmission of lactates to a collection pit,
• A secondary leach ate collection/leak detection system.

Introduction of the product / application areas

• Oekotech application segment includes concepts in,
• Environmental protection(land fill waste management systems),
• Waste disposal and
• Recycling (recycling of polymer).
• The most well known concept is the use of geosynthetic products in Landfill management.
• Geosynthetics are widely used in the design of together base and cover liner systems of landfill amenities.
• The products include:
• Geogrids, which can be used to reinforce slopes beneath the waste, reinforce walls as well as to reinforce cover soils above geomembranes.
• Geonets, which can be used for in-plane drainage.
• Geomembranes, which are relatively impermeable, sheets of polymeric formulations that can be used as a barrier to liquids, gases and/or vapors; provide the critical functions of leach ate containment, protection of ground water and Landfill Gas (LFG). They are also used in landfill caps.
• Geocomposites, which consist of two or more geosynthetics, can be used for separation, filtration or drainage.
• Geosynthetic clay liners (GCLs), which are composite materials consisting of Bentonite and geosynthetics that can be used as an infiltration/hydraulic barrier; they find application not only in landfills/waste management but also for mine rehabilitation, tunnels, secondary containment e.g. of petrochemicals, landscaping etc.
• Geotextiles, which can be used for filtration purpose or as cushion to protect the geomembrane from puncture.

Product characteristics

• Both woven and non-woven geosynthetics are used.
• Geosynthetic clay liners consist of non-woven fabric layers of 180-250 GSM with an intermediate layer of Bentonite mineral (Unit Mass: 1-5 kg/sq m).
• Geotextiles used for filtration/cushion are typically high GSM (285 – 3000) non-woven fabrics.
• The ingredients for making HDPE geomembranes are around 97% high molecular weight polyethylene, 2 to 3% carbon black, and 0.5 to 1.0% stabilizers and antioxidants.
• Some most important characteristics of HDPE geomembrane are that they are
• Chemical resistance,
• Low permeability and
• Ultraviolet resistance.
• The thickness of this geomembrane is 2 mm.

Manufacturing process and Type of Raw materials

• GCLs are manufactured from quality polypropylene geotextiles and premium grade Sodium Bentonite powder.
• The upper and base layers of geotextiles can be of non-woven and woven fabric respectively.
• Normally, Bentonite clay is placed on a woven Geotextile, with the non-woven cover then being placed.