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DL E&C

  • 1. Water Purification Technology
    This technology is a membrane filtration-based water purification and treatment technology to produce safe drinking water. A membrane filtration-based water purification and treatment technology is capable of producing drinking water in a more stabilized manner compared to the traditional sand filtration technology.
    • Submerged membrane technology integrated with pre-treatment
      In a dual-fold-structured water treatment facility, the contaminants are filtered out in the first phase, while the second phase is used for higher-precision filtering. As the higher-precision filtration membrane does not contact the contaminants directly, it is possible to purify water in a more stabilized manner. Also, the precipitation facility and membrane facility are combined into a single facility, making it possible to run the facility in a smaller space than conventional technology.
      • Intellectual property right: Registered patent 10-1363662
    • Hybrid membrane filtering system
      Unlike the conventional water treatment facilities, this new filtration system does not require a massive structure, as it pressurizes water and filters it through a membrane. Therefore, it is possible to treat and purify water without a precipitation facility. Also, this technology is more economical as it is possible to reduce or skip the downstream facilities to handle foreign contaminants.
      • Intellectual property right: Registered patent 10-1418738
  • 2. WastewaterTreatment Technology
    This is the technology to treat and purify the wastewater that is destined to be generated due to the activities of human kinds. As the sludge from the wastewater treatment facility is reduced, this technology can contribute to cost saving and environment protection.
    • Sludge reduction system
      It is possible to reduce the amount of sludge generated in treating wastewater when the growth environment of micro-organisms is managed well. Here, a device called a telescopic decanter can be used to prevent the impurities on the surface of the water is mixed with treated water. Using these two methods, it is possible to reduce the cost spent in treatment and maintain the cleanliness of the water.
      • Intellectual property right: Registered patents 10-1081668-0000, 10-1405008-0000
    • Advanced wastewater treatment using pressurized membrane
      By applying a sludge reduction tank in the treatment process, it is possible to reduce the amount of sludge generated significantly. On top of this, we applied the first-ever pressurized membrane technology in South Korea, achieving an even higher treated water quality level. Thanks to these technologies, it is now easier and more efficient to manage and operate wastewater treatment facilities.
      • Intellectual property rights: Registered patents 10-1063206, 10-1405009
      • Certified New Environmental Technology No. 435, Verification of New Environmental Technology No. 177
  • 3. SeaWater Desalinization Technology
    This technology is a revolutionary solution to the decrease of treatment efficiency due to salt in the desalinization of seawater, which accounts for the majority of water on Earth. It contributes to more stability in the operation of the reverse osmosis membrane equipment, which is the most essential part of the seawater desalinization process. As a result, it is now possible to desalinize the seawater in a more efficient manner.
    • Pre-treatment of seawater reverse osmosis(SWRO)
      The dissolved air floatation method, which was mainly used in SWRO processes, is ridden with the issues of the low organic matter removal rate and the need for a vast amount of space. To improve these issues, we introduced a technology that injects iron oxide particles, which are more effective in a salty environment, directly into the membrane filtration process. This boosted the efficiency in the removal of organic materials significantly, while reducing the site area necessary to build a treatment facility.
      • Intellectual property right: Registered patent 10-1745146