At present, with the comprehensive implementation of the rural revitalization strategy, the governance of rural water environment, as the core issue for improving the living environment, is facing practical challenges such as "difficulty in controlling decentralized pollution, lack of paths for resource utilization, and insufficient technological ".

I. Field Exploration: Decoding the "Rural Practice Samples" of Technology Implementation

Before the evaluation meeting, Director Shi Zhenlong and Director Wu Yachuan of the Soil Ecological Environment Division of the Shanxi Provincial Department of Ecology and Environment, Secretary Feng Xiaoning, Vice Mayor Zhang Weihua, Vice Chairman Li Baoshan of the Yuanping Municipal Committee of the Chinese People's Political Consultative Conference, and relevant responsible persons from the Agricultural and Rural Affairs Bureau, the Housing and Urban-Rural Development Bureau, the Environmental Protection Bureau, and the Rural Revitalization Development Center of Yuanping City General Engineer Peng Yingdeng of the National Engineering Research Center for Urban Environmental Pollution Control, Chairman Fu Tao of the E20 Environment Platform, President Zhu Shuai of the National Environmental Engineering Design Institute of Tsinghua University, Researcher Li Xiang of the Institute of Water Environment Science of the Chinese Research Academy of Environmental Sciences, Researcher Zhou Ying of the Torch Center of the Ministry of Science and Technology, Group Leader Wei Yudong of the National Standard Review Group for the Evaluation of Beautiful Countryside Construction, and the Ministry of Housing and Urban-Rural Development's Urban Water Pollution Control Director Pan Caiye of the Engineering Technology Application Center, Chief Engineer Zhang Xiaoming of Xinzhou Zhulong Construction Drawing Review Company in Shanxi Province, General Manager Niu Panpan of Xinzhou Taihui Energy Technology Co., Ltd. and other representatives attending the meeting went deep into the rural demonstration site in Yuanping to observe the application effect of the technology on the spot. Under the explanation of Academician Ling Jianjun and his team from Lingzhi Equipment Co., LTD., The "rural adaptation logic" of environment-coupled grey biofilm technology is gradually becoming clear:

• Focus on the treatment of "grey water" : For decentralized grey water from rural kitchens, baths, laundry, etc. (with relatively low pollution load and great potential for resource utilization), build a closed loop of "collection - treatment - reuse".

• Environmental coupling design: The technical system is fully adapted to the environmental characteristics of rural areas, such as "scattered land use, simple operation and maintenance, and cost sensitivity". It adopts modular equipment, occupying only one-third of the land area of traditional processes, and does not require professional operation and maintenance personnel.

• Resource utilization breakthrough: The treated effluent can be directly used for farmland irrigation, courtyard greening, and toilet flushing water replenishment, achieving "turning sewage into resources". Each household saves over 50% of water per day on average, providing a new "water conservation" solution for rural areas in water-scarce regions.

On the spot, leaders from the Department of Ecology and Environment of Shanxi Province and Yuanping City, along with an expert team, held discussions on the actual needs of rural areas such as "long-term operational stability" and "adaptability to extreme climates". The "low-temperature resistance and low energy consumption" performance of the technology in the arid northern regions became the focus of attention - the equipment, through the optimization of the bacterial community of the gray biofilm, still maintains high processing capacity in a 5℃ environment. The energy consumption for operation and maintenance is reduced by 40% compared with similar technologies.

Ii. Authoritative Discussion: Professional Review and Breakthrough Recognition of Scientific and Technological Achievements

During the evaluation session, Academician Han Buxing (Chinese Academy of Sciences) Online: Chief Engineer Peng Yingdeng (National Engineering Research Center for Urban Environmental Pollution Control), Fu Tao (Chairman and Chief Partner of E20 Environment Platform), President Zhu Shuai (Guohuan Tsinghua Environmental Engineering Design Institute), Researcher Li Xiang (Institute of Water Environment Science, Chinese Research Academy of Environmental Sciences), Researcher Zhou Ying (Torch Center of the Ministry of Science and Technology), Group Leader Wei Yudong (Beautiful Countryside Construction) A review panel composed of authoritative experts such as the Evaluation National Standard Review Group, the secretary-general of the China Rural Revitalization Research Institute of Renmin University of China, and Director Pan Caiye (Engineering Technology Application Center for Urban Water Pollution Control of the Ministry of Housing and Urban-Rural Development) will conduct a strict examination of the achievements with an "international frontier perspective + engineering practice dimension".

The three major breakthroughs in technological innovation

1. "Environmental coupling" mechanism innovation: Breaking through the bottleneck of traditional treatment technologies being incompatible with rural environments, through the synergistic metabolism of biofilms and the natural environment, the efficiency of pollutant degradation is enhanced, and the capacity to resist shock loads is increased by three times.

2. Iteration of grey biofilm technology: Developed composite biofilm materials that are resistant to pollution and easy to form biofilms. Combined with the "anaerobic-aerobic" coupling process, the removal rates of COD and ammonia nitrogen reached 92% and 95% respectively, far exceeding the rural sewage discharge standards.

3. Full-process resource utilization system: Build an industrial chain of "grey water → purified water → resource reuse", and develop reclaimed water recovery devices and organic fertilizer co-production systems as supporting facilities to achieve "zero negative value of pollutants".

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After a full-process review including "document review, technical inquiry, and data verification", the expert panel unanimously determined that this technology has reached the international leading level in terms of "environmental adaptability, resource utilization efficiency, and economy" for rural grey water treatment, filling the international gap in "low-cost and high-efficiency" treatment technologies for decentralized rural sewage.

Iii. Value Resonance: Multi-dimensional Empowerment from Technological Innovation to Rural Revitalization

This achievement evaluation is not only an affirmation of a technology, but also provides a model for the coordinated development of "technology + industry + people's livelihood" in rural ecological governance:

▶ Ecological Value: Solving the Chronic Problem of Rural Pollution

The long-term direct discharge of grey water in rural areas is an important cause of black and odorous rivers, soil salinization and groundwater pollution. This technology, through "source interception and recycling", can reduce the water pollution load of a single village by over 80%, fundamentally reversing the governance predicament of "sewage relying on evaporation and garbage relying on wind blowing".

▶ Economic Value: Activating the "Microcirculation" in Rural Areas

Cost reduction: The cost of modular equipment is only 60% of that of traditional sewage treatment facilities, and the operation and maintenance cost is as low as 200 yuan per year.

The income-generating end: Resource utilization (such as irrigation water and bio-organic fertilizer) can be fed back to rural areas, driving villagers' income growth and forming a virtuous cycle of "pollution control - income increase".

▶ Social value: Echoing the construction of "livable villages"

The low intervention and easy maintenance features of this technology perfectly adapt to the reality of rural areas lacking technology, funds and talents. It does not require large-scale pipeline renovation and can be built by a single household or a group of households. It provides a "replicable solution" for sewage treatment in over 2 million natural villages across the country and accelerates the implementation of the "Thousand Villages Demonstration, Ten Thousand Villages Improvement" project.

Iv. Future Outlook: Let the flowers of technology bloom everywhere in the countryside

At present, the rate of rural sewage treatment in our country is less than 30%, and the gap between the supply of technology and the actual demand needs to be filled urgently. Lingzhi Equipment Co., LTD., as the holder of the achievements, has launched the "Three-Year Technology Promotion Plan" :

• Regional pilot projects: Build demonstration villages in water-scarce northern provinces such as Shanxi, Shaanxi and Gansu, and form a collaborative implementation model of "technology - policy - market".

• Standard Construction: In collaboration with the China Private Science and Technology Promotion Association and research institutions, formulate the "Technical Specifications for the Treatment of Rural Grey Water Resources" to promote the standardization of the industry.

• Model innovation: Explore a model of "government subsidies + village collective participation + market-oriented operation and maintenance" to solve the problem of "broken capital chain" in rural pollution control.

From the fields and farmlands of Yuanping to the ecological breakthroughs in rural areas across the country, the breakthrough of environment-coupled grey biofilm technology is essentially a practice of "rooting science and technology downward" - it proves that only by making innovative achievements adapt to the texture of rural areas and solve real pain points can the "pool of spring water" of ecological revitalization be truly activated.