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Integrated Continuous Sludge Drying and Carbonization Technology: Dingjiu Environment Achieves Sludge Resource Recovery and Near-Zero Emissions
Dingjiu Environment has been focusing on sludge oxygen-free carbonization for 12 years. The integrated continuous sludge drying and carbonization technology has an operating cost of only 72.71 yuan/ton, near-zero exhaust emissions, and biochar can be utilized as a resource, contributing to zero-waste cities and the dual carbon strategy.
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Hunan Dingjiu Practices the "Two Mountains" Concept with Innovative Technology—First "Zero" Energy Consumption Sludge Resource Recovery Line Aids the 56th World Earth Day
On April 22, 2025, the 56th World Earth Day, under the theme "Cherish the Earth, Harmony between Humans and Nature," Hunan Dingjiu Energy & Environment Technology Co., Ltd. celebrated the third anniversary of stable operation of its demonstration project built on its globally pioneering "integrated sludge continuous drying and carbonization technology." The project has cumulatively treated over 110,000 tons of municipal sludge, reduced carbon dioxide emissions by approximately 14,000 tons, and achieved a 100% energy self-circulation rate. With hardcore technological strength, it delivers a bright answer to the 20th anniversary of the "Green Water and Green Mountains are Gold and Silver Mountains" concept.
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Guard Water Resources, Build a Green Future Together - Hunan Dingjiu Energy & Environment Technology Co., Ltd. Supports World Water Day
Today is World Water Day, an important day for global attention to the sustainable development of water resources. Water is the source of life, and the problem of water pollution is becoming increasingly serious. Sludge treatment, as a key link in water pollution control, directly affects the health of the water ecological environment. Hunan Dingjiu Energy & Environment Technology Co., Ltd., as a leading environmental technology enterprise in China, has always been committed to the innovation and promotion of pyrolysis carbonization of organic solid waste and sludge carbonization technology, contributing scientific and technological strength to the protection of water resources.
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Brief Introduction to the Development of Sludge Carbonization Technology
Sludge is a solid waste generated during wastewater treatment, containing complex components such as organic matter, heavy metals, and pathogens. Improper disposal can easily cause secondary pollution. With the acceleration of urbanization and the improvement of environmental protection requirements, efficient resource recovery technologies for sludge have become a research hotspot. Sludge carbonization technology, as a new thermochemical conversion technology, converts sludge into biochar, gas, and liquid products under high temperature and oxygen-free conditions. It offers advantages in volume reduction, stabilization, harmlessness, and resource utilization, and has received widespread attention in recent years.
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Blossoming Quietly - The 'Her Power' on the Environmental Protection Technology Front: A Profile of Pan Jing, a Rising Engineer at Hunan Dingjiu's R&D Department
At the forefront of technology at Hunan Dingjiu Energy & Environment Technology Co., Ltd., a new force is active - Pan Jing, a master's graduate in Environmental Engineering. As International Women's Day on March 8, 2025 approaches, we look at Pan Jing's story. This environmental protection technology backbone, who graduated from Xiangtan University and previously worked at Sany Energy and Hunan Aerospace Kaitian Water, has devoted herself to the company's frontline R&D of sludge carbonization technology with solid professional expertise and innovative enthusiasm, becoming a beautiful sight on the green technology track.
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Hunan Dingjiu Energy & Environment Technology Co., Ltd. Awarded National High-tech Enterprise Certification
Hunan Dingjiu Energy & Environment Technology Co., Ltd. (hereinafter referred to as "Hunan Dingjiu"), with its outstanding technological innovation capability and R&D achievements, has officially passed the national high-tech enterprise certification, marking that the company's R&D strength and industrialization application capabilities in the field of sludge resource utilization have received national-level recognition.
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Hunan Dingjiu Awarded Multiple Patents for Sludge Carbonization Technology, Driving Green Circular Development through Innovation
As a leading high-tech enterprise in sludge treatment in China, Hunan Dingjiu Energy & Environment Technology Co., Ltd. (hereinafter referred to as 'Hunan Dingjiu') has achieved a major breakthrough in the field of sludge resource utilization. The independently developed 'Integrated Sludge Continuous Drying and Carbonization Technology' has been granted a total of 23 national invention patents and 7 utility model patents. This achievement marks a new milestone in China's sludge reduction, stabilization, harmlessness, and resource utilization technologies, providing an innovative solution to solve the 'sludge siege' problem.
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Mr. Chen Liye, Executive President of Qiaoyin Environmental Protection, and His Team Visited Hunan Dingjiu Company for Exchange
On July 23, 2020, Mr. Chen Liye, Executive President of Qiaoyin Environmental Protection Technology Co., Ltd., the first A-share listed sanitation service enterprise in China, along with Legal Director Mr. Chen Wei, Investment Director Mr. Jiang Chen, and related technical team members, visited Hunan Dingjiu Energy & Environment Technology Co., Ltd. for research and exchange. Mr. Yu Kun, Deputy General Manager of Zhejiang Haiyun Energy Technology Co., Ltd., and Mr. Jiang Liangjun, General Manager of Hunan Dingjiu Energy & Environment Co., Ltd., led the management team to host the exchange event.
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