Emphasis on collaborative disposal, waste incineration is in the C position! The first relevant national standards will be implemented
On February 7, the General Office of the Ministry of Housing and Urban Development issued the national standard "Technical Requirements for domestic Waste Treatment Industrial Parks (Draft for Revision)" (hereinafter referred to as the "standard"), which stipulates the overall requirements, construction requirements, management and operation supervision requirements, safety management requirements, carbon emission management and accounting requirements and environmental protection requirements of domestic waste treatment industrial parks. It is suitable for centralized disposal of domestic waste, kitchen waste, recyclables, bulky waste, construction waste, landscaping waste, feces and other waste treatment parks. In addition, vein industrial parks with domestic waste disposal functions, recycling economy industrial parks, and resource recycling bases can also be implemented by reference.
Highlighting the concept of "coordination", waste incineration ranked C firmly
Environmental Sanitation Technology network noted that, in terms of length, this standard published in the form of pdf document is not long, including the cover, the table of contents and so on is only 12 pages, but there is a word appears dozens of times, it is "collaborative", which may reflect the necessity and importance of collaborative disposal for the future domestic waste disposal industry. It should be paid great attention to by all relevant people.
The standard points out that the domestic waste disposal industrial park is a place that "has a definite construction land area, public facilities and a unified management system, and carries out centralized treatment and resource utilization of two or more types of garbage such as unclassified domestic waste and classified kitchen waste, recyclables, bulky garbage, construction waste, landscaping waste and feces", referred to as the park. The park has the ability of collaborative disposal, collaborative sharing and collaborative consumption, namely:
1. Garbage with similar attributes can be disposed of in a collaborative manner, such as domestic waste incineration plants can dispose of feces and landscaping garbage in a collaborative manner;
2. The function of the same facilities can be Shared together, such as the leachate treatment facilities, collaborative sharing of odor treatment facilities;
3. Solid waste residue can be given together, such as kitchen waste, waste pretreatment residue and renewal of anaerobic digestion generated by incinerators given.
In terms of site selection and construction scale, the standard points out that the site selection of the park should give priority to relying on the land where the existing garbage incineration plants, sanitary landfills and other garbage disposal infrastructures are located. The construction scale of the park should be adapted to the amount of garbage in the service area. For small cities or towns with daily domestic garbage production less than 300 tons, regional coordination should be made to build and share parks with neighboring cities.
The park can be divided into the following five categories according to the daily disposal capacity of various types of garbage entering the park:
a) Class Ⅰ park: daily processing capacity of 5000t/d and above;
b) Class Ⅱ park: daily processing capacity is between 2000t/d ~ 5000t/d (including 2000t/d);
c) Class Ⅲ park: daily processing capacity 1000t/d ~ 2000t/d (including 1000t/d);
d) Class IV park: daily processing capacity 300t/d ~ 1000t/d (including 300t/d);
e) Class V park: daily processing capacity below 300t/d.
At present, the terminal disposal of domestic solid waste is mainly based on incineration, so the construction of solid waste treatment parks with waste incineration projects as the core may become the best choice and first choice everywhere.
To this end, the standard puts forward the following three requirements for the construction of waste incineration projects:
a) domestic waste incineration power generation and heating function should be used to realize the cascade utilization of energy in the park;
b) The collaborative disposal function of domestic waste incineration can be used to coordinate the disposal of feces, landscaping garbage, biogas residue generated by anaerobic digestion of kitchen waste, light materials on screen generated by renovation garbage and large garbage resource utilization, sludge generated by sewage treatment, and various types; Waste disposal residue, etc.
c) Control facilities for pollutants such as odor and leachate from domestic waste incineration and storage pits can be used to realize facility coupling and sharing to treat pollutants such as odor and leachate generated by other garbage disposal in the park.
Obviously, the above three requirements make waste incineration the indispensable power and heat supply center of the future domestic waste treatment park, the disposal center of combustible waste with a certain bottom-end nature, and the treatment center of secondary pollutants such as odor and sewage disposal, which is firmly in the C position of all projects in the park.
In addition, the standard also proposes that kitchen waste disposal projects, construction waste disposal projects, landscaping waste disposal projects and other projects should give full play to their collaborative disposal functions. For example, collaborative disposal of manure and sludge with anaerobic digestion facilities for kitchen waste; Use aerobic composting facilities for kitchen waste to coordinate the disposal of feces, landscaping waste, biogas residue and sludge generated by anaerobic digestion of kitchen waste; Use decoration waste resource facilities to coordinate the utilization of large garbage and recyclable waste plastics, waste glass products, waste textiles, etc.
It can be seen that under the support of the concept of collaborative disposal, some facilities do not need to be built separately. For example, feces and garden garbage can be co-disposed by kitchen waste disposal facilities and waste incineration plants, and bulky garbage and recyclables can be co-disposed by means of renovated waste treatment facilities. Facilities such as sewage treatment and supporting pipe network, water supply, drainage, power supply, roads and so on will only need to be built by the park as a whole, which highlights another advantage of collaborative disposal and park management, namely "co-construction and sharing", which can reduce the difficulty of location and construction and maintenance costs of facilities as a whole.
The concept of double carbon was integrated into the whole process, and carbon emission accounting of the park was carried out
According to the standard, the park should integrate the concept of double carbon management in the whole process of planning and design, construction, operation and management, and should be supported by a variety of energy-saving, emission reduction, carbon sink and carbon sequestration technologies. In addition, it is necessary to promote the park to achieve the goal of "carbon neutrality and carbon peak" through dual-carbon measures such as domestic waste incineration and power generation central heating, green energy transformation of the park, coupled recycling and collaborative disposal of waste treatment facilities, waste resource utilization, wastewater and residual collection and sharing treatment and treatment, etc.
In terms of carbon emission accounting, the standard points out that carbon emission accounting should take the waste disposal enterprises and public works facilities within the geographical scope of the park as the accounting boundaries and emission sources, and the total carbon emission of the park should sum up the direct carbon emissions, indirect carbon emissions and carbon sinks of each emission source, including:
Direct carbon emission sources include: incineration process, landfill process, anaerobic digestion process of kitchen waste, feces and leachate, the energy required by some types of waste disposal is fossil, oil and gas.
Indirect carbon emission sources include: various types of waste treatment processes, incineration processes, biogas utilization in anaerobic treatment of kitchen waste, feces and leachate, some types of waste treatment processes, export of resource products.
The measures to reduce carbon emissions in the park include: afforestation and vegetation restoration in the park, sudden improvers made by kitchen waste and biogas residue, and measures of carbon capture, carbon sequestration and carbon utilization.
For the full text of this standard, please visit the website of the Ministry of Housing and Urban-Rural Development to download it by yourself.
Source: https://mp.weixin.qq.com/s/wgZt3BuxUxsThDm219dVTA