Environment

Scope of work

We provide comprehensive services, from design, procurement, and construction to maintenance and management, for various environmental facilities planned by individuals, corporations, local governments, and public institutions. These facilities include sewage, wastewater, and reclaimed water treatment plants, as well as water reuse facilities.
Furthermore, we proactively identify regional environmental issues and offer solutions to address them.

Business process

01 02 03 04 05 06

01
Providing feasibility studies and technical consulting for various projects
02
Design and Proposals for various Environmental Facilities
(Providing Engineering Design Services)
03
Review of relevant laws and regulations.
Acting as agent for project permits and approvals with relevant authorities

04
Perfect delivery and procurement of various environmental equipment, including membrane facilities, within the specified deadline
05
Flawless construction utilizing Korea's top-tier technology and know-how
06
Thorough and professional commissioning and operational management of environmental facilities

Proposals and Consulting
- · Analysis of clients' environmental issues
- · Presenting optimal solutions to problems
- · Proposing optimal wastewater treatment solutions
- · Solving local environmental problems through private capital infusion
Design & Engineering
- · Providing error-free design services to ensure perfect construction and facility operation
- · Perfectly designing various environmental facilities with our nation's top-tier design expertise
Authorization and Permission
- · Handling all authorization and permitting processes from design to completion
Supply and Delivery
- · Supply and procurement of essential equipment for environmental facility operation, including membrane systems, machinery, instrumentation, and electrical facilities
Construction
- · Construction participation by top-tier experts in each field, including civil engineering, architecture, and plant construction
- · Delivering the highest spatial value through differentiated technology and optimized services
- · Achieving zero defects through smart construction
Commissioning and Operation Management
- · Maximizing facility operational efficiency through top-tier experts
- · Operational capability that can 100% satisfy design objectives and performance

Owned Technologies

Environmental New Technology

Environmental New Technology Table
Technology Name	Registration number	Key Features of the Technology	Treated Water Quality (Environmental New Technology Verification Results)
Technology Name	Registration number	Key Features of the Technology	Item	influent water (mg/L)	Effluent (mg/L)	treatment efficiency (%)
Advanced Sewage Treatment Technology Using Anaerobic/Anoxic/Aerobic/Degassing Tanks and Immersed Hollow Fiber Membranes (HANT Method)	Designation No. 31 / Verification No. 33	Korea's first MBR Environmental New Technology Excellent Treated Water Quality: Consistently achieving an average of less than 3 ppm for BOD and SS, regardless of influent wastewater quality fluctuations Maintaining high-concentration microorganisms and reducing sludge production : Optimal MLSS concentration: 5,000 to 7,000 ppm Small Footprint: Requires only 70% of the land area compared to the activated sludge process and 60% compared to the A2O process Simplified unit processes lead to easy maintenance and management Full resource recovery of treated water as reclaimed water (for non-potable reuse) No Disinfection Facilities Required: 100% removal of coliform bacteria by filtration Automatic Backwash System: Easy maintenance and unmanned operation possible	BOD	143.5 (27.4~370.0)	1.1 (0.3~ 2.8)	98.9 (97.4~99.9)
			CODMn	86.5 (37.6~228.7)	6.6 (4.5~ 9.5)	89.1 (78.2~97.9)
			SS	236.2 (32.0~840.0)	1.1 (0.2~ 2.3)	98.8 (94.1~99.9)
			T-N	31.6 (16.2~61.0)	7.4 (3.9~16.0)	71.7 (37.2~91.7)
			T-P	4.2 (1.0~12.3)	0.6 (0.0~ 1.4)	72.9 (19.4~99.5)
			Coliform count (cells)	11,228 (570~30,150)	Not detected	100
High-Efficiency Wastewater Membrane Separation Treatment Technology Utilizing Automatic Influent Splitting Based on C/N Ratio and a Hybrid Jet Venturi Mixer (CHAMP method)	Undergoing Environmental New Technology Certification and Verification	A technology that ensures optimal denitrification efficiency at all times by real-time measurement of influent raw water's TOC and ammoniacal nitrogen, calculating the C/N ratio, and automatically splitting and injecting the influent into the subsequent anoxic and anaerobic tanks according to the C/N ratio Utilizing a hybrid jet venturi mixer, which demonstrates 1.5 to 2 times higher oxygen transfer efficiency compared to conventional aeration devices, enabling a 20-30% reduction in power costs relative to conventional aeration devices	Undergoing Environmental New Technology Certification and Verification
Next-generation advanced treatment using a target effluent quality-driven sewage recirculation MBR process (HCH method)	Undergoing Environmental New Technology Certification and Verification	An MBR process for advanced treatment, consisting of anaerobic, anoxic, aerobic, intermittent (or alternating) reaction, membrane separation, and degassing tanks Increased total nitrogen removal efficiency by implementing internal recirculation from the degassing tank to the alternating reaction tank, based on effluent electrical conductivity (EC) measurements Reduce blower power costs by 10 to 20 percent over normal by using a pre-air cannon generator	Undergoing Environmental New Technology Certification and Verification

Patent

Patent Table
NO.	Registered name	Application Number	Application Date	Registration Number	Progress
1	Immersed Membrane Unit for Membrane Bioreactors (MBRs)	10-2016-0066662	2010.06.30	1733980	Registration Complete
2	Gate-Type Immersed Membrane Unit for Membrane Separation Systems	10-2014-0011955	2014.02.03	1461048	Registration Complete
3	A membrane unit for flow prevention, designed to protect hollow fiber membrane modules from damage	10-2015-0046210	2015.04.01	1554924	Registration Complete
4	Drum Screen Device for Immersed Membrane Separation Systems, Equipped with a Sludge Storage Unit	10-2017-0144363	2017.11.01	2017585	Registration Complete
5	Lightweight Immersed Membrane Unit for Membrane Separation Systems	10-2017-0144364	2017.11.01	2055679	Registration Complete
6	Mixing and Flocculation Unit	10-2017-0056828	2017.05.04	1879239	Registration Complete
7	High-Efficiency Wastewater Membrane Separation System	10-2020-0111482	2020.09.02	2300414	Registration Complete
8	Gate-Type Immersed Membrane Unit for Membrane Separation Systems	10-2020-0103143	2020.08.18	2418770	Registration Complete
9	Immersed Membrane Unit for Membrane Separation Systems	10-2021-0067025	2021.05.25	2503715	Registration Complete
10	Improved Membrane Frame for Preventing Clogging of Hollow Fiber Membrane Modules	10-2021-0147703	2021.11.01	2622671	Registration Complete
11	A Drum Screen Device for Immersed Membrane Separation Systems, equipped with a conical mesh screen for easy sludge discharge.	10-2021-0147702	2021.11.01	2644074	Registration Complete
12	MBR-Based Wastewater Treatment Facilities and Their Operation Method	10-2022-0138507	2022.10.25	2596610	Registration Complete
13	Membrane Cleaning Device Utilizing Bubbles, and MBR-Based Wastewater Treatment Facilities Equipped with It	10-2022-0138508	2022.10.25	2596611	Registration Complete
14	Wastewater Pre-treatment Equipment for MBR-Based Wastewater Treatment Facilities, and Its Management Method	10-2023-0144592	2023.10.26	2686620	Registration Complete

Environmental New Technology Process Diagram

HANT Method

Korea's First MBR Process for Advanced Wastewater Treatment (The First MBR-Based Environmental New Technology)

Holds the Most References in Korea for Advanced Treatment MBR Processes (Approx. 500 Projects)
CHAMP method

Achieving Stable Treated Water Quality by Instantly Adjusting Operating Conditions Based on Raw Water Quality

Venturi mixer reduces aeration maneuvering costs
HCH method

High-efficiency MBR process optimized for large-scale treatment facilities

Stable nitrogen removal efficiency

Power cost reduction of 70-80% due to reduced aeration, compared to other MBR processes

Owned Membrane Filtration Facilities

Owned Membrane Filtration Facilities Table
Model Name Category	SUR234W	SADF0690	SADF1590	SADF2590	SADF0590(UF)	SADF2590(UF)	SADF4090(UF)
Membrane Type	Hollow Fiber Membrane
Pore Size	0.4 ㎛				0.05 ㎛
Membrane Material	PE	PVDF
Membrane Area	2.4 ㎡	6 ㎡	15 ㎡	25 ㎡	5 ㎡	25 ㎡	40 ㎡
Tensile Load	0.8 kgf	25 kgf			12 kgf	25 kgf	12 kgf
Standard Flux Note1)	0.2~0.3㎢/㎡·d	0.6±0.2㎢/㎡·d

※Note 1) Standard Flux may vary depending on the raw water characteristics

SUR Module
SUR Frame
SADF Module
SADF Frame

SADF Membrane Characteristics

1. High Permeate Flux: Approximately 3 times higher compared to conventional/existing models
2. Enhanced chemical resistance
3. High physical strength: Approximately 30 times stronger than conventional hollow fiber membranes
4. Unmanned operation possible
5. Extension of membrane lifespan
6. Processing 1,000 tons per day with 1 frame

Target applications for SADF membranes

1. Facilities with maintenance cost issues
2. When the required site area is very limited
3. When a high level of treated water quality is required

Automated medication cleaning

asy maintenance through automatic chemical cleaning, performed while the membranes remain submerged in the membrane tank

Business Performance

Business Performance Table
Type of raw water	Track record
Sewage	Samsung DSR Project (4,200 tons/day) and 2,273 other projects
Sewage	Gimhae Jinyeong Wastewater Treatment Plant (10,500 tons/day) and 254 other projects
Wastewater	Icheon Hynix Wastewater Treatment Plant (11,800 tons/day) and 990 other projects
Recycled water	Jeju Raon Private Town Reclaimed Water Treatment Plant (1,000 tons/day) and 179 other projects
Total	As of 2024, more than 3,700 nationwide achievements have been recorded