by On December 27, the 2021 national solid waste recycling and comprehensive utilization technology conference with the theme of “recycling leads the future and regeneration helps double carbon” was held in Jinan.
The conference was co sponsored by the National Institute of building materials industry technology information, the national building materials industry technology supervision and research center and the industrial technology basic public service platform of the Ministry of industry and information technology, and undertaken by China Power Construction Group Shandong Electric Power Construction No.
1 Engineering Co., Ltd.
At the same time, the conference also held the Establishment Ceremony of the “solid waste treatment (industrialized application) technology research center” to build a “five in one” comprehensive service platform for industry, University, research and application of scientific and technological innovation, achievement promotion and application, standard formulation, inspection and testing and talent training, so that more excellent innovative achievements can “blossom” on the platform.
More than 300 people from 200 units attended the conference, and more than 20 mainstream media reported on the scene.
The guest’s speech received a warm response, and you can’t miss these wonderful moments…
Today, this platform launched part of the speech of Professor Hu Shanying, director of the ecological industry research center of the Department of chemical engineering of Tsinghua University.
The final application of solid waste is in the field of construction engineering, municipal engineering, green building materials, etc.
it is mainly used in construction engineering.
What kind of solid waste is needed in construction engineering, what kind of products are made, its performance and application, and what kind of solid waste is needed at home and abroad? For municipal and construction projects? I want to share with you.
For precast buildings, it is the main development prospect in China in the future.
It mainly changes the development mode of buildings, which is one of the future development prospects.
With the real estate investment and national municipal engineering investment in China in recent ten to twenty years, many new construction enterprises and construction enterprises have emerged.
In this process, the country gradually tends to be stable.
A large number of enterprises and products can not be digested in the domestic market, resulting in overcapacity.
In this case, I did this work abroad 30 years ago, In the Ministry of construction, I was also engaged in this work, including China’s first proposal to transform housing industrialization into construction industry modernization, which was also put forward by me.
Later, I wrote a report to the Central Committee with Chairman Lai Ming, member of the Standing Committee of the National Committee of the Chinese people’s Political Consultative Conference.
Later, there was the biweekly consultation meeting of the National Committee of the Chinese people’s Political Consultative Conference in 2013, and there was No.
97 document on the large-scale development of precast buildings on September 27, 2013, After passing the No.
97 document, we have developed very fast.
In the process of nearly six or seven years, precast buildings also need to go to a new level.
Under the new circumstances, we also mentioned the problem of double carbon and green building materials, in which environmental protection is also a very important factor.
When the original new mines and new resources are not allowed to be developed, solid waste is also an important utilization way for us, which is the real aspect of carbon reduction and green building materials.
What kind of solid waste comprehensive utilization and processing can meet the current precast buildings? Since the mining mine, there has been solid waste treatment.
At that time, the treatment was relatively coarse ore, just landfill, including foamed aerated blocks added to cement, which were first called fly ash, and slag blocks.
Under the current situation, these are small and scattered, The addition of coal or landfill of small blocks and coarse ore is far from meeting the needs of buildings, especially green buildings and precast buildings.
It forces us to innovate from the modular research and integrated research of the theoretical system.
What kind of innovation can meet the needs of construction engineering? China has also made a good engineering case.
However, some small enterprises face the problem of re selection and re transformation without doing so.
Current situation and situation of utilization of bulk solid wastes.
How many bulk solid wastes are there in China? We define that bulk solid wastes are composed of seven plates, including construction waste solid wastes at the mouth of building materials, agricultural straw at the mouth of agriculture, industrial tailings, industrial waste residue, etc., all of which belong to a part of bulk solid wastes.
Coal gangue, smelting slag, fly ash, tailings, industrial by-product gypsum, construction waste and crop straw.
Fly ash is the earliest used in China, including using cement as an additive, slag cement, etc.
it is used more.
Now the utilization degree of fly ash is also quite high.
Now fly ash can be made into pipes, decorative materials, outdoor decorative materials with higher added value, even floor tiles and market projects.
Slag, as the addition of municipal engineering and construction engineering, can be made into blocks or crushed into slag cement.
Desulfurized gypsum, in order to remove harmful sulfur in the power plant, gypsum desulfurization needs to be carried out to produce chemical reaction, so the sulfur is removed to produce industrial desulfurized gypsum.
Now desulfurization does not need desulfurization gypsum.
The problem has been completely solved by directly using new nano materials and New Quantum Engineering.
Only 3kg of fly ash is produced in 100 tons of coal.
This is also a revolutionary and subversive work.
Now our technological innovation and technological revolution have broken the traditional cognitive and physical level.
For the ultra-thin insulation board produced now, we have done many experiments on the spot.
Here, we burn with a 1000 degree high-temperature flame gun and a 2 cm board on the opposite side.
After we feel 37 degrees, it is reasonable that this can not be explained by conduction, Attenuation of 100% can reach this temperature.
Indeed, the processing of the new mechanical revolution has brought about changes in materials.
Shandong has occupied the fourth place in the amount of industrial solid waste in various revolutions in China.
There are coal mines and nonferrous metal mines in Shandong.
The content of Shandong is also relatively large.
Shandong has great influence in the country and is also a big province of solid waste.
In the same comprehensive utilization situation, Shandong also ranks first in comprehensive utilization.
In 2019, Shandong Province ranks first.
In the next few years, the comprehensive utilization of tailings mines in Shandong Province will still rank first..
