Civil Works Research Support
Civil Technology & Consulting
Top-class civil engineering works completing social infrastructure
DL E&C develops advanced technologies in ground, tunnel, harbor, water resources, water treatment, and smart construction fields and provides prime technical solutions.
Technologies Owned
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Structure Foundation R&D
- Evaluation of bearing capacity of foundation
- Foundation design optimization
- Reinforcement of pile foundation bearing capacity
- IGM ground strength evaluation
- Design and reinforcement of different types of foundations
- Attached wall-type PHC pile walls
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Underground Space
/Tunnel R&D
- Digging stability and construction stage analysis
- Underground space/tunnel construction management
- TBM tunnel design and construction
- Rapid construction of NATM tunnels
- Steel fiber segment lining
- NATM tunnel blast vibration control
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Harbor and Water Resource R&D
- Hydrologic and hydraulic analysis in rivers
- Hydrologic and hydraulic analysis in dams
- Numerical interpretation for dam and river structures
- Seawater flow prediction
- Groundwater flow analysis
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Smart Construction R&D
- Drone-based civil works management
- Drone-based construction and quality control
- Modularization of large-scale offshore foundation construction
- ICT-based dredging management
- AI-based sewage treatment plant operations
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Water Treatment R&D
- Advanced sewage treatment SBR technology for sludge reduction (e-Tris I)
- Advanced sewage treatment MBR for sludge reduction (e-Tris II)
- Water treatment with two-layer membrane filtration system Integrated management of intelligent waterworks (eco-smart management system)
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R&D for Desalination and Recycling of Rivers
- Pre-processing for desalination to cope with red tide
- Seawater desalination plant design and operation
- Design and operation of sewer recycling plant
- Automatic operation of sewage recycling with membrane filtration
Representative Technologies
Foundations of Large Structures
Technology
overview
- Cost saving-type foundation that can stably bear the loads of large structures
Effects
- Cost savings and construction period reduction of structural foundation and enhancement of structural foundation bearing capacity
Applied projects
- Brunei CC2 & CC3 Bridges, Busan Angol Bridge West Seonhong-Songsan Subway, Saemangeum South-North Road, Honam High-Speed Railroad
Intellectual
Property Rights
- Patent No. 10-0847096: driving penetration cone testing device and ground survey method and strength calculation method using the device
- Patent No. 10-0992751: structures for coupling to the end of the hollow pile and grouting method for strengthening the bearing power of the ground at the lower end of the pile using the structure
- Patent No. 10-1069815: post-grouting system of cast-in-place concrete piles and post-grouting method for increasing end bearing capacity at the pile base
- Patent No. 10-1011013: in-situ bearing capacity and settlement evaluation method and measuring device using standard penetration test equipment
- Patent No. 10-1086190: construction method of dual footing structure with differential settlement reduction structure
- Patent No. 10-1294243: precast concrete hollow pile having end shoe apparatus with pile damage prevention grouting material injection structure and construction method
- Patent No. 10-1152265: prestressed bored pile construction method and structures
- Patent No. 10-0990201: variable geometry expandable hammer for pile end expansion
Blast Vibration Control and Cost-Saving Segment
Technology
overview
- NATM: technology that controls blast vibration through the deck charge of explosives and electronic detonators in case of blast around security objects
- TBM: replacement of existing RC segment through the development of SFRC segment lining member
Effects
- NATM: 20% advance rate increase within the permissible vibration threshold compared to the existing blast method
- TBM: manufacturing cost savings compared to the existing RC segment and cracks control during installation/use with two or more purposes
Applied projects
- Anseong-Guri Expressway, GTX-A
Intellectual
Property Rights
- Patent No. 10-1972124-0000: deck charge method for tunnel blasting
- Patent No. 10-1000570: tunnel high-speed digging method using center-cut hole double charge and dispersing charge
- Patent No. 10-0936630: stemming device for blast holes
- Patent No. 10-2013005-9049: pressurized ring beam and construction method for tunnel cutting surface using concrete-compacting pressurized cells
- Patent No. 10-2013-0130475: rear cavity backfill composite of tunnel improving initial-stage strength and compaction attributes
Sludge reduction advanced sewage treatment SBR process (e-Tris I)
Technology
overview
- Continuous-flow SBR system for advanced wastewater treatment with reduced sludge production (up to 60% reduction)
Effects
- Reduced CAPEX and OPEX ae well as enhanced environmental sustainability by reducing sludge production
Applied projects
- Project to establish an environment demonstration complex (2013)
Intellectual
Property Rights
- Certificate of Korea National Excellent Technology (NeT) No. 345 (Korea Ministry of Environment)
- Green Technology (GT) No. 12-00027 (Korea Ministry of Environment)
- Patent 10-1048352 Advanced wastewater treatment devices and method for reduced sludge production in the treatment process
- Patent 10-1063206 Advanced wastewater treatment devices and method for reduced sludge production and wastewater reclamation
- Patent 10-1240239 Vertical decanter system for effluent discharge with scum overflow prevention device in wastewater treatment system
- Patent 10-1080635 Advanced wastewater treatment system using sequencing batch reactor coupled with coagulation-sedimentation basin
- Patent 10-1081668 Anaerobic sludge holding tank to induce endogenous microbial growth and its utilization method for reduced sludge production
Sludge reduction advanced sewage treatment MBR technology (e-Tris II)
Technology
overview
- Advanced wastewater treatment system with reduced sludge production (up to 60% reduction)
MBR technology using side-stream membrane for convenient operation and maintenance compared to MBR using submerged membrane
Effects
- Reduced CAPEX and OPEX ae well as enhanced environmental sustainability by reducing sludge production
Intellectual
Property Rights
- Certificate of Korea National Excellent Technology (NeT) No. 435 (Korea Ministry of Environment)
- Green Technology GT No. 12-00027 (Korea Ministry of Environment)
- Patent 10-1048352 Advanced wastewater treatment devices and method for reduced sludge production in the treatment process
- Patent 10-1063206 Advanced wastewater treatment devices and method for reduced sludge production and wastewater reclamation
- Patent 10-1240239 Vertical decanter system for effluent discharge with scum overflow prevention device in wastewater treatment system
- Patent 10-1080635 Advanced wastewater treatment system using sequencing batch reactor coupled with coagulation-sedimentation basin
- Patent 10-1081668 Anaerobic sludge holding tank to induce endogenous microbial growth and its utilization method for reduced sludge production
Dual-Membrane Filtration System for Drinking Water Treatment
Technology
overview
- DL E&C’s dual-membrane drinking water treatment system consists of high-capacity pressurized membrane module and multi-purpose submerged membrane tank. It is not required to construct large civil structures, i.e., sedimentation basin, sludge and backwash water collection basin, sludge concentration basin, etc.
Effects
- More than 30% of CAPEX and OPEX reduction with reduced footprint
Intellectual
Property Rights
- Certificate of Korea National Excellent Technology (NeT) No. 487 (Korea Ministry of Environment)
- Collective Standard Certificate of Water Supply Membrane Module (KWWA F106)
- NSF / ANSI 61 Drinking water system components – Health Effects (PF100)
- Patent
- Hybrid membrane filtration system using pressurized and submerged membranes (2014. 7)
- High efficiency submerged membrane tank including coagulation and sedimentation functions (2014. 2)
- Efficient membrane cleaning method using mass balance in the operation of membrane filtration process (2013. 12)
- Control method of membrane filtration system by automatically regulating recirculation rate in order to respond varying
raw water quality (2013. 9)
- Dual membrane filtration system using pressurized and submerged membranes and its variable control method (2013. 5)
Integrated Smart Waterworks Management System
Technology
overview
-
Efficient management for the overall waterworks from source to tap can be done by using Integrated Smart Waterworks Management System.
The system, developed with user-friendly module format and UI environment in order to enhance the conveniency and efficiency, consists of 3 main modules: ① treatment plant management system, ② supply networks management system and ③ integrated management system.
Effects
- Enhanced efficiency by optimizing unit process operation
- Safe and stable water supply with reduced O&M cost
- Customer satisfaction through real-time supply networks monitoring
- Applied in the City of Yangpyeong
Intellectual
Property Rights
- Patent 10-0030753 Determination method of optimal locations for pressure gauges in water supply networks
- Patent 10-0030755 Hybrid water supply system
- Patent 10-0035375 Determination method of optimal flowmeter locations in water supply networks
- Patent 10-0013350 Method of disinfection by-products monitoring and method of chlorination dosage using the monitoring data
- Patent 10-0013352 Method of disinfection by-products monitoring in water supply networks
- Program C-000686 Program for optimal determination of pressure gauge locations in water supply networks
- Program C-007211 Program for optimal determination of flowmeter locations in water supply networks
- Program C-007327 Program for water demand prediction
- Program C-001371 Optimal water supply pump operation system for water treatment plant
- Program C-001372 Process diagnosis system for water treatment plant
- Program C-001373 Asset management system for water treatment plant
- Program C-001374 Water supply network analysis system on the basis of PDA method
- Program C-001375 Water supply network operation and management system
Pre-Processing Technology of Desalination to Cope with Red Tide
Technology
overview
- Technology that removes alga byproducts causing serious membrane contamination of seawater desalination facilities by using oxidized steel; an eco-friendly technology that reduces membrane contamination and electric power usage through the combination with low-pressure membrane filtration process
Effects
- Can cope with high concentration membrane contaminating materials inflow and extend the chemical cleaning agent’s cleaning cycle
- Power consumption and waste liquid amount of chemical cleaning agents can be reduced
Intellectual
Property Rights
- Patent No. 10-1745146: seawater desalination apparatus and method using steel oxide dynamic membrane filtration
- Green technology GT-19-00658 (steel oxide absorption and cake layer-formed membrane filtration pre-processing)
