







Decantercentrifuge
| D-LM-NT-R300 Specs | |
|---|---|
| Capacity | 5 - 10 m³/hr |
| Dimension | 2500 x 900 x 850 mm |
| Motors | 11 kW + 2.2 kW |
| Weight | 2500 kg |
| Drawing (for reference) | Drawing (for reference) |
| D-LM-NT-R350 Specs | |
|---|---|
| Capacity | 5 - 10 m³/hr |
| Dimension | Dimension 2800 x 1000 x 950 mm |
| Motors | 22 kW + 3.7 kW |
| Weight | 3500 kg |
| Drawing (for reference) | Drawing (for reference) |
| D-LM-NT-R400 Specs | |
|---|---|
| Capacity | 15 - 20 m³/hr |
| Dimension | 3300 x 1200 x 1100 mm |
| Motors | 37 kW + 7.5 kW |
| Weight | 4000 kg |
| Drawing (for reference) | Drawing (for reference) |
| D-LM-NT-R450 Specs | |
|---|---|
| Capacity | 20 - 25 m³/hr |
| Dimension | 3500 x 1300 x 1200 mm |
| Motors | 45 kW + 11 kW |
| Weight | 5000 kg |
| Drawing (for reference) | Drawing (for reference) |
| D-LM-NT-R500 Specs | |
|---|---|
| Capacity | 25 - 30 m³/hr |
| Dimension | 3900 x 1400 x 1400 mm |
| Motors | 55 kW + 15 kW |
| Weight | 6000 kg |
| Drawing (for reference) | Drawing (for reference) |
| D-LM-NT-R550 Specs | |
|---|---|
| Capacity | 25 - 30 m³/hr |
| Dimension | 3900 x 1400 x 1400 mm |
| Motors | 55 kW + 15 kW |
| Weight | 6000 kg |
| Drawing (for reference) | Under preparation |
| D-LM-NT-R620 Specs | |
|---|---|
| Capacity | 45 - 55 m³/hr |
| Dimension | 5000 x 1700 x 1600 mm |
| Motors | 75 kW + 22 kW |
| Weight | 8500 kg |
| Drawing (for reference) | Under preparation |
| D-LM-NT-R700 Specs | |
|---|---|
| Capacity | 55 - 65 m³/hr |
| Dimension | 2500 x 900 x 850 mm |
| Motors | 11 kW + 2.2 kW |
| Weight | 11300 kg |
| Drawing (for reference) | Under preparation |
This is the 3D model of the decanter centrifuge researched and developed by ARK R&D Team engineers. It helps customers clearly visualize the details of each component, such as the centrifugal chamber, screw, motor, and gearbox unit.
Optimal 3D Viewing Environment : PC (i5 or higher), Mobile (Android 7.0 or higher, or iOS 14.0 or higher)
ARK Decanter Centrifuge Overview
| Capacity | Maximum 65 m³/hr |
| Fed Slurry Concentration | 1.0 - 2.5% |
| Permissible Slurry Types | No limitation |
| System | Fully automated and sealed configuration, equipped with self-lubricating bearings and motor |
⚙️ARK’s Decanter Centrifuges
🏭 Reasons that you need to install the sludge dewatering system at your factories/treatment plants
ARK's Decanter Centrifuges enable remarkable cost reduction in your factories and treatment plants.
Due to the high centrifugal power, the machines are able to receive a large volume of slurry per unit of time. Our lineups having a wide range of capacity must cover any factories and treatment plants in size of production.
Compared to the conventional sludge thickening, such as gravity thickening, the volumes of the wastes could be reduced by almost 90%. This performance correspondingly saves the sludge disposal cost at the factories/teratment plants.
Furthermore, the labor cost for the sludge treatment at the factories/plant can also be correspondingly reduced. This is because the machines can receive a high volume of the slurry per unit of time.
In general, the expense for sludge treatment, including sludge disposal, can be reduced to as low as 10% of that outsourced in a slurry form. This means that the investment cost of the sludge dewatering machine may be recovered within 1-2 years.
🤝Customer-support services
💡Recommended ARK’s additional equipment with decanter centrifuge
In the sludge dewatering process with a decanter centrifuge, a pre-mixing process for the polymer flocculant and the slurry (or wastewater) is basically unnecessary.
You can feed the solution of polymer flocculant to the decanter centrifuge with a pump. The polymer solution may be prepared with a flocculant-dissolving system additionally purchased from ARK.
| Machine type | View on browser | Download Electronic Files |
|---|---|---|
| D-LM-NT-R300 | View |
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| D-LM-NT-R350 | View |
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| D-LM-NT-R400 | View |
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| D-LM-NT-R450 | View |
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| D-LM-NT-R500 | View |
ARK's decanter centrifuges are easy to operate due to their elaborate and automated configuration. The moisture content of the dewatered sludge cake is easily optimized even in an operational mode. We are pleased to offer technical training at the customers' convenient sites.
Because of the elaborate design and materials, the machines are silent and free from the production of nuisance odors during the operation. The system has a self-cleaning module and a timer to allow the factories/treatment plants to reduce their operational manpower. The rotating shaft with self-lubricating bearings also minimizes the operator’s maintenance frequency.
ARK Vietnam's decanter centrifuges are made of high-quality materials. Stainless steel (304 and/or 316, depending on the customer's decision) is the material for the body and most of the parts. The screw is reinforced with tungsten carbide, which is forceful against abrasion.
ARK holds plenty of stock for spare parts in our factories in Vietnam and Korea. The spare parts are delivered to your sites no sooner than we receive your request. In case of issues of mechanical malfunctions, our skillful technical team rushes to the customer's site in Asian countries for immediate maintenance and repair. In addition, the team is pleased to visit your plants at regular intervals for checking the machines.
We are pleased to suggest the best-fit machine type and capacity, depending on the sludge production at your factories/treatment plants.
Brochure about ARK’s products
(in Korean language)

ARK News
(machine-translated)
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Vietnam has been dubbed the ‘new dragon of Asia" due to its spectacular economic growth. But beneath the glittering growth are serious growing pains. Endless waste, polluted nature, and graying skies. The Vietnamese government has recognized the seriousness of the problem and has drawn the sword of the law, but with great change comes great opportunity. Right now, Vietnam's environmental problems are paradoxically [...].October 28, 2025
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Vietnam Water Market Insights Source: Water & Sewerage / Overseas Construction Association Hyo Eun Kim Vietnam's spectacular economic growth is no secret. However, there is another reality behind this spectacular growth that we need to pay attention to. That is the issue of water infrastructure. Despite having abundant water resources, dilapidated water facilities that cannot keep up with the pace of rapid urbanization and industrialization are a challenge that Vietnam must address, and at the same time, a barrier to new business [...]October 30, 2025
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My name is Seulgi Kim, Marketing Manager of ARK company. ARK is participating in the 3-day VIETNAM WATER WEEK exhibition. Vietnam Water Week 2025 is an international exhibition in the field of water supply, sewage, water purification, wastewater treatment and environmental sanitation, and is a well-established environmental exhibition in Vietnam. We will be showcasing our next-generation decanter centrifuge, which has been continuously improving its performance through ongoing research and development (R&D) projects to ensure outstanding efficiency, and will be attracting much attention [...]August 6, 2025
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ARK Participation in Indonesia Water Treatment Expo! Hello, this is Seulgi Kim, ARK Korea Marketing Manager. ARK is participating in a water treatment fair in Indonesia. We would like to meet and greet with many representatives and companies related to sewage and wastewater treatment in Indonesia and explain our products. We are a product that has received the best rating as a ‘procurement superior product‘ certified by the Korean government, which is designed to meet the standards of advanced urban water treatment in Korea. We have entered the Indonesian water industry and [...]August 6, 2025
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Review of NVEX 2025, Valuable time to meet decanter centrifuge and screw press buyers Our booth, which was visited by many people, was closely watched not only by buyers but also by representatives of related organizations such as the water cluster and the Korea Environment Agency. As a company belonging to the water industry cluster, we also participated in the exhibition with pride. Our booth, which was visited by many people, was observed not only by buyers, but also by representatives of related organizations such as the water cluster and the Korea Environment Agency. Let me introduce the companies whose booths attracted attention among the various companies. CJK (CJK) Website [...]June 17, 2025
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Meet the future of innovative decanter centrifuge technology We invite you to the exhibition! Dear water industry stakeholders, RK, a leading innovator in the water industry, invites you to a special exhibition at COEX L-13 from Wednesday, June 11th to Friday, June 13th. At this exhibition, we will be exhibiting our highly efficient decanter centrifuges that incorporate our unique technology. Our decanter centrifuges, which will contribute to solving environmental problems and increasing resource efficiency, are already used in many industrial [...]August 10, 2025
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https://www.loud.kr/contest/view/170083 👆👆👆 View the crowdsourcing contest (designer account required)👆👆👆 👆👆👆 Greetings - Why are you starting a project? Hello, we are a dehydrator development company. For those who work in the water industry, dehydrator is a common term, but for those who don't, it may be unfamiliar. We are a Korean company with a factory in Vietnam that develops various types of dehydrators, which are devices for dehydrating sewage and wastewater in the water industry. Currently, as a carbon reduction project, we are combining decanter centrifuges with FRP in addition to the existing stainless steel [...].August 10, 2025
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Hello, dear RK family! 🎊 On the occasion of the Chinese New Year 2025, we would like to extend our heartfelt greetings to you. We would like to express our deepest gratitude to everyone who has been with us in the past year. Just like the dehydrator we developed for water treatment, we hope this year will be a year where the unnecessary things in your life are cleanly dehydrated and only the pure and valuable things remain. 💧✨ Chinese New Year is a holiday for sharing precious time with family and friends, and with the busy [...]...August 10, 2025
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Dear Customers, Greetings from all of us at ARK on the occasion of the year 2025. The year 2024 was a year in which the Korean water industry made a significant leap forward. Overseas exports through the Korea Environment Agency's water cluster reached KRW 109.3 billion, a remarkable achievement, and the overall growth rate of the industry remained stable at 2.91 TP3T. In particular, as long as digital transformation accelerated across the water industry and eco-friendly solutions were actively developed to respond to climate change, [...]August 10, 2025
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Hello, I'm Sohee Jeon, a public relations manager at ARK, and I'd like to share my experience of VIETWATER2024, which took place last week from the 6th to the 8th. Held at the Saigon Exhibition & Convention Center (SECC), it was a meaningful event that made us realize how deep and important the water industry is in Southeast Asia. Water is a food and energy resource that can sustain irreplaceable life energy called ‘WATERGY‘ in the future. On the other hand, after extreme weather events, we are affected by heavy rainfall flooding in an unpredictable short time. In this [...]August 10, 2025
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Hello, this is RK. We are participating in the historic VIETWATER event. We will participate in VIETWATER 2024, Vietnam's largest water industry exhibition. VIETWATER is Vietnam's largest water industry exhibition, showcasing the latest solutions and products in water management, water treatment, and environmental technology. The annual event gathers companies and professionals from around the world to discuss sustainable water management, water recycling, wastewater treatment, and [...]August 10, 2025
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[Going to the National Product Industry Cluster] [3] ’Overseas Performance Evaluation‘ Paves the Way for Chinese Companies to Export The National Product Industry Cluster is pioneering overseas sales for its resident SMEs through the ‘Overseas Performance Evaluation' program. It identifies companies that have excellent technology but have difficulties in developing overseas sales. It verifies product performance at the demonstration plant and provides the results to overseas customers to increase reliability and conduct 'third-party performance verification'. Water companies such as CJK and ARK were selected in 2022 and last year through open recruitment followed by expert evaluations, and [...]November 3, 2025
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Brochure about ARK’s products
(in Korean language)


















