Renhong’s integrated solution redefines environmental tech."

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2019.5

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+

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Hangzhou Renhong Environmental Technology Co., Ltd. was established.

40% more energy-saving,  

40% less water used

2020

Awarded the title of "Zhejiang Small and Medium-sized Sci-Tech Enterprise".

2021

Granted funding under Hangzhou's "Eaglet Program".

2023

Recognized as a National High-Tech Enterprise.

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RenHong Integrated Washing System: Maximum Recovery, Minimum Resource Use

RenHong's advanced integrated washing system transforms resource recovery for MSWI fly ash, non-metallic mineral powders, and organic residues. While traditional multi-stage washing/filtration systems demand high energy, excessive solvent/water consumption, and intensive maintenance, our solution delivers breakthrough efficiency with just ONE integrated washer + ONE filter unit:

 ≥40% Energy Reduction

 ≥40% Water/Solvent Savings → Lower downstream costs

 Cleaner Operations – Eliminates sludge leaks

 Minimal Maintenance – Routine checks only

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RENHONG

Environmental technology

Renhong Integrated Washer: One unit replaces multi-stage systems for MSWI fly ash/mineral/organic residues. Achieves ≤1.5 water ratio with single dewatering, cutting energy/water use 40%+. Extracts industrial salts (CaCl₂/NaCl/KCl) and converts residues into cement/ceramic raw materials. Reduces OPEX and maintenance complexity.

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Project  Case

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Deployed integrated washing unit for MSWI fly ash. Achieved ≤1.5 water ratio, recovered salts, and supplied 10,000+ tons/yr cement-ready ash to local plants.

Our system processes fly ash into cement raw material, cutting disposal costs and enhancing circularity for China's top cement producer.

Processed 40k t/y MSWI fly ash into cement raw material since 2015. Pioneered ≤1.5 water ratio with single-dewater unit efficiency

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Converted 80k t/y fly ash into vitrified aggregates (2020). Salt recovery + glassy material production validated circular economy impact.

Deployed 2023: Processes 30k t/y residue into SCMs (supplementary cementitious materials) with 40% lower OPEX vs traditional systems.

Newest integrated unit (2023): 100t/day fly ash to cement material. Multi-unit contract confirms replicable success.

Renhong pioneers patented single-unit washing systems, cutting waste processing costs 40%+ while transforming MSWI fly ash and residues into resources. Trusted by industry leaders.

Hangzhou Renhong Environmental Technology Co., Ltd.

Founded in May 2019 and led by Professor Wu Chengqiang (Environmental Engineering PhD, Zhejiang University of Technology), Hangzhou Renhong Environmental Technology Co., Ltd. is a National High-Tech Enterprise specializing in advanced resource recovery solutions. We develop and deploy patented integrated washing systems for hazardous residues like MSWI fly ash, non-metallic mineral powders, and organic wastes. Our end-to-end services—covering technical design, engineering, EPC+O&M—and equipment sales are validated by 10+ operational fly ash projects nationwide. Strategic partnerships with industry leaders like Zhejiang Hongshi Environmental Protection and WELLE Environmental Group underscore our technical credibility. Since pioneering washing R&D in 2015, we’ve revolutionized the sector with our 2023-generation integrated washer, achieving ≤1.5 water-to-ash ratios and single-dewater unit efficiency—slashing energy/water use by 40%+ while converting waste into cement/ceramic-ready materials.

Engineering a Waste-Free Future

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Brand Building

01

Founded by Prof. Wu Chengqiang (ZJUT Environmental Eng. PhD), Hangzhou Renhong launched as a tech R&D firm. Achieved "Zhejiang Sci-Tech SME" status (2020) and secured early patents for washing tech.

02

Start-up Stage

Validated core fly ash washing tech with ≤1.5 water-ash ratio and single-dewatering process. Won Hangzhou’s "Eaglet Plan" funding (2021) and deployed 10+ projects.

03

Earned National High-Tech Enterprise certification. Upgraded to integrated washing equipment (2023), cutting costs and enhancing EHS. Forged partnerships with Hongshi Environmental and WELLE.

Growth Stage

04

Expansion Stage

Scaling resource recovery solutions (salts extraction, ash upcycling) across MSW fly ash/mineral/organic sectors with 40%+ resource/energy savings versus traditional systems.

Company News
Introduction to Hangzhou Renhong Environmental Technology Co., Ltd.
Introduction to Hangzhou Renhong Environmental Technology Co., Ltd.The company was founded in May 2019, with legal representative Wu Chengqiang, who is a professor and doctoral degree holder in environmental engineering from Zhejiang University of Technology. It is specialized in environmental protection technology
Created on 07.25
Hangzhou Renhong Environmental Technology Reaches Strategic Cooperation with Industry Giants to Jointly Promote the Development of Environmental Protection Industr
Hangzhou Renhong Environmental Technology Reaches Strategic Cooperation with Industry Giants to Jointly Promote the Development of Environmental Protection IndustrHangzhou Renhong Environmental Technology Co., Ltd. recently announced that it has signed strategic cooperation agreements with well-known industry enterprises such as Zhejiang Hongshi Environmental Protection Co., Ltd. (a subsidiary of Zhejiang Hong
Created on 07.25
Hangzhou Renhong Environmental Technology Wins National High-Tech Enterprise Title, with Technological Innovation Gaining Further Recognition
Hangzhou Renhong Environmental Technology Wins National High-Tech Enterprise Title, with Technological Innovation Gaining Further RecognitionHangzhou Renhong Environmental Technology Co., Ltd. successfully obtained the title of National High-Tech Enterprise in 2023, which is a high recognition of the company's efforts in the field of environmental protection technology research and develo
Created on 07.25
Hangzhou Renhong Environmental Technology's Fly Ash Water Washing Technology is Mature, with 10 Projects Demonstrating Its Strength
Hangzhou Renhong Environmental Technology's Fly Ash Water Washing Technology is Mature, with 10 Projects Demonstrating Its StrengthHangzhou Renhong Environmental Technology Co., Ltd. has achieved fruitful results in the field of waste incineration fly ash water washing technology. At present, it has designed and constructed 10 fly ash water washing engineering projects, demonstr
Created on 07.25
Hangzhou Renhong Environmental Technology's Integrated Water Washing Equipment Achieves Major Upgrade, Leading Industry Technological Innovation
Hangzhou Renhong Environmental Technology's Integrated Water Washing Equipment Achieves Major Upgrade, Leading Industry Technological InnovationHangzhou Renhong Environmental Technology Co., Ltd. recently announced that its independently developed integrated water washing equipment has completed a major technological upgrade, showing superior performance advantages compared with traditional
Created on 07.23

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