Can the hot furnace of CCTV's "I Love Invention" solve the problem of rural domestic garbage treatment?

Cover reporter Lu Dang Shao Meng intern Zhu Wenli

"This is Kashgar, Xinjiang, which is more than 4,800 kilometers away. This is Qinghai Golmud, which is more than 2,800 kilometers away. This is more than 1,800 kilometers of Chifeng, Inner Mongolia ... Through the Internet, I can master our garbage treatment equipment in real time in Jiangxi. Operations outside the kilometer. "54 -year -old Si Xiangyang was sitting in the office, pointing to a cloud platform projection picture on the white wall, and said proudly.

He has been engaged in research on rural domestic waste treatment technology for more than ten years. Cover news reporter Lu Dang Photography

The newly known technology inventor in the local area is the head of Jiangxi Zhiyuan Environmental Protection Technology Co., Ltd. He recently "out of the circle" was because of the special feature film of CCTV's "I Love Invention" column- "Judge Hot Explanation". After this TV film was broadcast nearly 25 minutes, the rural domestic garbage heat solution device developed by Xiangyang team was called "artifact" by many netizens. In the eyes of some environmentalists, this equipment is a key to solve the problem of rural domestic garbage treatment.

"I was born in the countryside. So far I still remember that the sky was blue and the water was clear. Later, there were more garbage in the countryside, and the environment was getting worse. I thought, can I have a simple operation, convenient operation, and low cost. The garbage treatment device allows my hometown to return to the green mountains and green mountains again. "But what made Xiang Yang Yang did not expect that from the thoughts to the practice, the first thing that encountered was" torment. "

"Are you crying in the CCTV documentary?" Facing the reporter, he was a little embarrassed. "In fact, I really didn't want to be photographed. I hope this section could be cut off at the time, but it was later broadcast." "Think about it now, it's really not easy to invent, do equipment, and run a business?" After that, he mentioned his collar and said, "This T -shirt was still bought by CCTV, and I did not buy it for many years. New clothes. "After speaking, he pointed at the sandals under his feet." After wearing it for five years, I was really reluctant to change. "

During the interview, I have been engaged in the research of rural domestic garbage treatment technology for more than ten years. Xiang Xiangyang made a teaser for more than ten years. In 2009, tens of millions of funds that accumulated accumulated and east. No need to run a business. After speaking, haha ​​laughed. "Now, although the technical research is successful, the equipment is affirmed, but there are still no short ways to go, and there are many slopes to climb." insistent".

Followed by the central government

Rural domestic garbage governance issues

Somewhere transsing piles, firefighters are dealing with the burning garbage. Picture source Xinhua News Agency

As a witness and participant in the changes in rural domestic garbage treatment methods, Xiang Xiangyang may not expect that the treatment of rural domestic garbage will be attracted to the central government.

In 2021, the General Office of the Central Committee of the Communist Party of China and the General Office of the State Council issued the "Five-Year Action Plan for Rural Human Residence Environment Remediation (2021-2025)". Among them, "comprehensively improving the level of rural domestic garbage management", "sounding the treatment system for sound garbage collection and transportation", and also listed the timetable -by 2025, in the eastern region, the urban suburbs of the central and western parts Regions, rural domestic garbage basically achieves harmless treatment.

About five months after this action plan was issued, on May 20, 2022, the Ministry of Housing and Urban -Rural Development, the Ministry of Agriculture and Rural Ministry, the National Development and Reform Commission, the Ministry of Ecology and Environment, the National Rural Revitalization Bureau, and the National Supply and Marketing Cooperative Society jointly issued " Notice on further strengthening the management of rural domestic garbage collection and disposal system ". Among them, further clarification- "villages with inconvenient transportation or transportation distance, and the construction of miniaturization, decentralization, and harmless treatment facilities should be built according to local conditions, and promoting domestic garbage to deal with it." In areas, the rural domestic waste collection and transportation treatment system is basically fully covered "...

"In fact, it is difficult to cover the countryside in large garbage treatment devices, and simple landfills and incineration will affect the environment." Xiang Xiangyang believes that in this context, the treatment of rural domestic garbage has become one of the problems of rural environmental governance.

Xiang Yang said that rural domestic garbage is relatively scattered and the transfer cost is higher. Some places have tried incineration. For example, the built -in house burning, not only has there many flies and mosquitoes, but also smoke. Later, I tried to build a soil furnace, but the garbage was too wet, and it could not be ordered without oil. Even if the combustion problem is solved by oil, the cost will be high, and the "oil fume rolling" when burning will cause pollution to the environment.

Evaluated to apply to

Thermal solution furnace of garbage treatment in rural areas

Is there a equipment that can be treated near and efficiently for rural domestic garbage? This is exactly the efforts of Xiangyang for more than ten years. In CCTV reports, the evaluation of this processing device is a heat solution furnace suitable for garbage treatment in rural areas.

"Gao'an City's comprehensive use of the model county project of crop straw in 2020" has a complete set of garbage thermal solution equipment. Cover news reporter Lu Dang Photography

A few days ago, when the reporter saw this set of equipment with a total height of 19 meters high in "Gao'an City's 2020 Morning Stalk Comprehensive Use Model County Project", it was undergoing "garbage heat solution".

"Garbage thermal solution is composed of furnace body, chimney, and tail gas treatment." Introduced by Yang Xiangyang, after the nearby domestic garbage came in, the portal of the furnace body was poured in, and the new garbage would absorb the lower layer of garbage burning. The heat generated to form a drying layer. After that, the garbage continued to sink, the temperature reached about 850 degrees Celsius, and thermal solution occurred, and the organic compounds in the garbage began to fission. After that, the oxygen inhaled in the bottom of the furnace began to burn, and the temperature could reach about 1,000 degrees Celsius. After combustion heating, the substance is sinking to the bottom of the furnace to form ash slag layer. "In this way, the thermal solution furnace forms a circular system. A set of device like this can deal with about 15 tons of garbage every day." Does the heat dissolution furnace cause environmental pollution during the garbage treatment process? Xiangyang said that whether it is organic biomass garbage or fossil raw material garbage in domestic waste, it contains a lot of combustible materials. For example, crop garbage, kitchen waste, plastic, rubber, cloth, paper, etc. In the case of sufficient oxygen, the organic matter in the garbage can be burned directly, producing water and carbon dioxide, and release of thermal energy. After combustion and thermal solution, the virus and bacteria in the garbage can also be killed.

Xiang Xiangyang added that the high temperature state operating to 850 degrees Celsius can be decomposed in the thermalization and gasification room in the high temperature of 850 degrees Celsius. When it reaches 950 degrees Celsius, organic waste gas and ammonia with odor will be decomposed. In addition, the heat generated during the waste thermal solution will dry the upper layer of wet garbage, and the dust and toxic and harmful substances will be attached by the upper layer of garbage. After the upper garbage enters the thermal disintegration layer, it will get a second decomposition. Therefore, the final discharge of the flue gas is processed by the depth treatment device of the tail gas to meet the national emissions requirements.

Xiang Yang introduced the heat solution to reporters. Cover news reporter Lu Dang Photography

The market chaotic market chaos

Unexpectedly need to establish a standard for garbage heat solving

In the Gaoan Base of Jiangxi Provincial Academy of Agricultural Sciences, not far from the "Model County Project of Gao'an City in 2020", Cheng Zhengxin, the deputy director of the Management Center, told reporters that the base will produce more agricultural waste every year, such as straws. These The waste scattered in the fields is not only prone to breeding diseases and insect pests, but also destroy the environment. In addition, there are some domestic garbage in the base, which used to spend money to ask someone to pull away. With this set of garbage thermal solution equipment, it not only solves the problem of garbage treatment, but also solves the problem of agricultural waste treatment generated by the experiment, and the ashes produced can also be used as a nutrients such as tea trees, seedlings and other plants.

Xiang Yang recalled that the initial heat solution equipment was actually unsuccessful. At that time, it was "intermediate inlet". First, picked the garbage in the sun, picked out the unable to burn, and the waste that could be burned was dried and poured into the middle position of the device. "One iron, one iron and one iron, and then found that the garbage was still too wet and could not burn, so I bought 3,000 yuan of diesel and burn it in fuel." For the time of the "initial test", Xiang Yang teased "I want to think about it "It is very good", one is that the cost is very high, and the other is that the managing is required 24 hours, otherwise the stove will be destroyed. "In the end for a few days, I didn't do it."

Xiang Yang explained that because the garbage was not dried at the time, it was necessary to spray diesel to burn. "Can you pull the equipment and dry the garbage? After several trials, it will make the internal wind of the furnace be larger after the height is found. The trouble is here again, for example, after pulling off the ash slag under the stove, the '' 'thermal energy' cannot be kept. "

Some people proposed that if the ash is not cleaned, it can block the heat from escape, and then control the speed of waste treatment. Finally, after calculation, every ton of garbage and 25 kg of ash can achieve good waste treatment effects, and also solve the problem of heat loss caused by ash.

I have reached this step, as if it is closer to success, but the new problem has come again -because the heat dissolution furnace material is special, it can only be shipped from fixed manufacturers, and the construction period is about 45 days, which leads to many many times, which leads to a lot The place is unwilling to buy. But at that time, the R & D expenses invested by Xiangyang had more than 10 million. If the market cannot be "realized", the project is difficult to sustain.

"In the winter of 2017, I thought about selling this technical method. Because there were only three or four days at that time, the New Year, and the brothers did not pay." After five years, Xiang Xiangyang talked about the experience, and he couldn't help scratching it involuntarily. Black hair, "If you don't sell it, you can't pay the salary. Selling, there is no chance. It was a few days that suddenly turned his head."

It was one of his friends who reunited the fire of Hope Xiangyang. "My friend asked me if I was in a hurry? I said yes. He asked how much. I said about 1 million, to pay the brothers' wages, and to pay a part of the materials owed. There are only 600,000, ask me if I want it. I am really happy because 600,000 can solve many things. "

Let Xiang Yangjin see hope further, it is an article about rural domestic garbage treatment. "The concept of this article is very consistent with my thinking, so I found the author and the then deputy dean of the Shenzhen Graduate School of Peking University at the time."

Regarding the past, Professor Luan recalled in an interview with CCTV, "I took the graduate team and was very excited after seeing their equipment. At that time, this equipment was particularly in line with the urgent need of rural domestic waste treatment. Very promising. "

He not only helped Xiang Yang to calculate the optimized size of the processing device, so that the amount of garbage treatment was greatly improved, and he also proposed the idea of modular production and assembly installation to facilitate transportation and construction, and shorten the construction period."After the final assembly installation is finally realized, the installation cycle has also been shortened to 4 and a half days." Xiangyang revealed that at present, 298 domestic garbage heat solution devices have been built nationwide, and 36 other units are under negotiations."It has covered 19 provinces and regions."

However, Xiang Xiangyang also said that because the relevant standards have not yet been established, the so -called garbage heat solving the furnace in the market is different, and some even become "furnishings."The reporter noticed that the "market chaos" that may exist in the heat solution device of garbage has aroused the attention of many people in the industry.Xiangyang suggested that relevant departments set up a "exit mechanism" to eliminate equipment that cannot meet thermal solution and environmental protection requirements.

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