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Volute Sludge
Dewatering Machines

High-efficiency, low-energy sludge dewatering and wastewater treatment solutions for industrial, municipal, and aquaculture applications.

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Trusted Wastewater Solutions Since 2015

Jiangsu Guonong Environmental Protection Co., Ltd. is a professional R&D manufacturer of water treatment equipment based in China. With over 8 years of experience, we specialize in advanced volute sludge dewatering machines, dissolved air flotation (DAF) units, rotary drum filters, and a full line of wastewater treatment components.

Our products are CE marked, built with SS304/SS316L stainless steel, and designed for durability, low maintenance, and energy efficiency. We serve industries including food processing, livestock, chemical, textile, municipal wastewater, and aquaculture.

Industrial Grade

Heavy-duty construction for 24/7 operation

Eco-Friendly

Low energy, high recovery rate systems

Dissolved Air Flotation Equipment

Our Top Products

High-performance, CE-certified equipment designed for maximum efficiency and minimal maintenance in sludge dewatering and wastewater treatment.

Rotary Drum Filter

Rotary Drum Filter

CE Marked, Internal Feed 100–520m³/h for sludge treatment

  • Model: GNWLN
  • Material: SS304/SS316L
  • Capacity: 100–520 m³/h
  • Application: Sludge dewatering
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DAF Equipment

Dissolved Air Flotation (DAF) Unit

Krofta design, 97% removal rate for industrial wastewater

  • Model: GNDAF
  • Removal Rate: 97%
  • Application: Oil/water separation
  • Design: Compact, high-efficiency
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Volute Sludge Dewatering Machine

Volute Sludge Dewatering Machine

Low consumption, automatic screw press system

  • Model: GNDS-353
  • Type: Screw Press
  • Efficiency: High dewatering rate
  • Use: Municipal & industrial
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Nano Bubble Generator

Micro/Nano Bubble Generator

Dissolved oxygen enhancement for aquaculture and treatment

  • Model: GNNBG
  • Bubble Size: Micro to nano
  • Function: Oxygenation, disinfection
  • Material: Stainless steel
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Mechanical Bar Screen

Mechanical Bar Screen

Total stainless steel, automatic rake for wastewater

  • Model: GNCF
  • Material: SS304/SS316L
  • Type: Fine bar screen
  • Operation: Fully automatic
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Rotary Drum Screen

Rotary Drum Screen

Solid-liquid separator, 0.5–6mm filtration

  • Model: GNZG
  • Mesh: 0.5–6mm
  • Material: SS304/SS316L
  • Use: Pre-treatment, screening
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Screw Sludge Dewatering Machine

Screw Sludge Dewatering Machine

Multi-plate, clog-free, self-cleaning design

  • Model: GNDS Series
  • Type: Volute filter press
  • Features: Auto cleaning, low noise
  • Applications: Livestock, restaurant sewage
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Fine Bubble Diffuser

Fine Bubble Disc Diffuser

EPDM/Silicone membrane for high oxygen transfer

  • Model: GNBQ
  • Material: EPDM, Silicone, TPU
  • Diameter: 8", 9", 12"
  • Use: Aeration, MBBR, ponds
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Why Choose Us?

Engineered for performance, reliability, and sustainability.

Quality Guaranteed

ISO9001 certified manufacturing with strict quality control. All products CE marked and built to international standards.

Energy Efficient

Low power consumption designs with turbo blowers and optimized hydraulic systems for reduced operational costs.

Fully Automatic

Smart control systems, self-cleaning mechanisms, and remote monitoring options for hassle-free operation.

8+
Years Experience
50+
Countries Served
200+
Projects Completed
97%
Removal Efficiency

Frequently Asked Questions

What is a volute sludge dewatering machine?

A volute sludge dewatering machine uses a screw press with a fixed and moving ring stack to mechanically separate water from sludge. It's known for low noise, low energy use, and continuous operation.

Can your DAF units handle oily wastewater?

Yes, our Krofta-style DAF units are specifically designed for oil/water separation with up to 97% removal efficiency, making them ideal for food processing, petrochemical, and metalworking industries.

Are your machines CE certified?

Yes, all our major products including rotary drum filters, DAF units, and turbo blowers are CE marked and comply with European safety and environmental standards.

Do you offer customization?

Yes, we provide OEM/ODM services and can customize equipment based on flow rate, space constraints, automation level, and material requirements (e.g., SS316L for corrosive environments).

What support do you offer after purchase?

We offer full after-sales support including installation guidance, remote troubleshooting, spare parts supply, and technical training to ensure smooth operation.

Get in Touch

For quotes, technical support, or product information, visit our official website to contact our team directly.

kevin@gngep.com
86-510-87981855
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