The problem -oriented cracking point is a good "four -step chess" to open the sludge treatment "last mile"

Original title: The problem -oriented cracking point is a good "four -step chess" to open the "last mile" of the sludge treatment - "Implementation Plan for Harmicization and Resource Utilization of the sludge"

Lucky is a by -product of sewage treatment. In recent years, the collection and treatment of domestic sewage in urban and towns in my country has achieved significant results, but there is still a problem of "heavy water light mud", and sludge treatment has become one of the problems of environmental governance. Recently, the National Development and Reform Commission, the Ministry of Housing and Urban -Rural Development, and the Ministry of Ecology and Environment jointly issued the "Implementation Plan for Harmicization and Resource Utilization of Smules" (Failure to Ringhuangzhi [2022] No. 1453, hereinafter referred to as the "Implementation Plan"), abbreviated to the "Implementation Plan"), for short abbreviations), "Implementation Plan"), "Implementation Plan"), "Implementation Plan"), "Implementation Plan"). For comprehensive work deployment to accelerate the harmless treatment of sludge and the use of resourceization, clarify the direction and path of sludge treatment, fight in depth to prevent pollution prevention and control, promote pollution reduction and carbon reduction coordination, and promote the continuous improvement of the quality of ecological environment. important meaning.

1. Let's improve the "long -term chess" and reverse the concept of "heavy water light mud"

Since the 18th National Congress of the Communist Party of China, the country and localities have paid more attention to the problem of sludge, and the sludge treatment capacity has been significantly enhanced. Documents of urban sewage treatment planning and urban sewage treatment facilities in the country have been treated with the shortcomings of the shortcomings. It has been deployed but still lacks special policies. This plan is the first time that the national level has introduced the implementation plan for sludge, which fills the gap of policies in this field. From the perspective of processing paths, facility planning, spatial layout, etc. "Putting the emphasis on mud water" provides solid support. In addition, the "Implementation Plan" is one of the supporting plans of sewage resources to use the "1+N" policy system to propose the concept of "green, circulating, low -carbon, ecological", strengthen the control of source pollution and whole process management, and promote sludge sludge, promote sludge sludge The recycling and utilization of energy and resources in China, under the "double carbon" strategic framework, coordinate the green transformation of sludge.

2. Select the "Key Chess" for a good path to crack the difficulty of blocking points

The key constraints of sludge treatment are that several major mainstream treatment methods have their own bottlenecks and poor paths, which inhibit the construction of sludge treatment and resource -based use facilities. The "Implementation Plan" adheres to the problem orientation, and has proposed measures for how to choose sludge treatment paths and optimize the structure in different circumstances. The first is to actively promote the use of sludge soil. Land utilization is a generally adopted method of many countries, and it is also the mainstream method of realizing the use of sludge resourceization. It should be used as one of the preferred paths. Therefore, the "Implementation Plan" proposes to encourage municipal mud to be oxygenally digested or oxygen fermentation. Under the premise of strictly meeting the relevant standards, it is used as fertilizer or soil improvement agent, and is used for land greening, garden construction, abandoned mines, and non -agricultural saline and sandy land. The second is to reasonably reduce the scale of mud landfill. As a phased and urgent treatment technology, the landfill treatment is still adopted in many places and is used as a long -term treatment method. There is a certain hidden environmental risk hazard, and changes should be made as soon as possible. The "Implementation Plan" proposes cities with large and medium -sized cities in the eastern region, large and medium -sized cities in the central and western regions, and cities with conditions in other regions to gradually restrict the landfill treatment. By 2025, the Beijing -Tianjin -Hebei, the Yangtze River Economic Belt, the cities and counties of the Eastern region, the Yellow River, the Yellow River The proportion of landfill in cities along the dry stream is significantly reduced. The third is to promote the incineration of sludge in an orderly manner. The concentrated incineration of sludge is suitable for cities with large amount of sludge, shortage of land resources, high population aggregation, and good economic conditions. In the "Implementation Plan", encourage the construction of sludge centralized incineration facilities in areas with the above conditions. Cooperative incineration treatment of waste incineration plants and thermal power plants can be recovered as building materials to promote the use of sludge resources. The "Implementation Plan" emphasizes that local conditions should be appropriately selected to handle pathways and technical routes, and encourage the adoption of diversified combination methods to improve the level of harmless treatment and resource utilization.

3. "Basic chess" for facilities to build a good facility, and promote the balance of ability demand

Compared with sewage treatment facilities, the construction of sludge treatment facilities in my country is generally lagging. Many sewage factories face the problem of sludge stress pressure and nowhere to go. In response to this contradiction, the "Implementation Plan" proposes two measures to meet the long -term long -term Demand, take into account emergency treatment. First of all, the stock must be found out, improve quality and efficiency. Establish and improve the survey and construction system of sewage sludge treatment facilities, and understand the coverage, processing capacity and operating effects of existing sludge treatment facilities. The upgrade and transformation do not meet the standard requirements of the standard requirements, and further improve the operating efficiency. Secondly, the incremental plan must be planned and the gap is supplemented. Accelerate the construction of sewage collection pipe networks, improve the organic matter content of the sludge from the source, and facilitate subsequent treatment. On the basis of finding out the number of bottoms, reasonably estimates the amount and ability gap in the mud in the city and counties, and scientifically determines the scale of facilities. Overall layout, encourage large and medium -sized cities to moderate -scale large -scale construction of large -scale sludge centralized treatment facilities, encourage county town and build sludge treatment facilities in the formulation of urban organic waste, and coordinate the comprehensive collaboration of urban organic waste, promote sludge treatment facilities and other urban environment environment Infrastructure integration and symbiosis promotes intensive and efficient treatment.

Fourth, go to the whole process to manage "winning chess" to reduce hidden dangers of environmental risks

According to the central ecological environmental protection inspection notification, my country has illegal acts such as illegal disposal and illegal transfer during the current sludge treatment process, resulting in outstanding environmental risks of secondary pollution. For the weak links in the whole process of sludge treatment, the "Implementation Plan" has proposed targeted measures to ensure. First of all, strengthen the source control, strengthen drainage permit management and pollution permit management, strengthen regulatory law enforcement, prevent toxic and harmful substances from entering municipal sludge from the source, and ensure that the sludge needs to meet the requirements of the control indicators. Secondly, strengthening the management of transportation and storage, sludge transport storage is a key link to connect the sewage treatment plant and the final disposal of the sludge. , Avoid secondary pollution. Finally, strengthen supervision and management, encourage localities to do well in the informationization and refined management of the whole process of sludge treatment, optimize the operation methods, and regularly detect the sludge mud to ensure the treatment of the standard. In order to promote the implementation of the "Implementation Plan", the scheme has proposed specific guarantee measures from the aspects of strengthening technical support, improving the price and fee mechanism, and broadening financing channels, including accelerating the establishment of sludge treatment products and derivative products standards. The connection of standards encourages the use of government purchase services to promote the harmless treatment and resource utilization of sludge, etc., providing a strong guarantee for breaking the barriers of mechanism and stimulating endogenous power. It is believed that after the implementation of the "Implementation Plan", the sludge treatment work will form a good situation for coordinated advancement of the department, and gradually build a system of complete facilities, safe operation, green low -carbon, and effective supervision. Construction in China. (Director of Zhang Yingjian China International Engineering Consulting Co., Ltd.)

- END -