Small behaviors and big changes "low-carbon people" are quietly emerging.
"Walking or driving?" "Climb the stairs or take the elevator?" "Is the room temperature 28 degrees or 27 degrees?" ..... These multiple-choice questions have gradually become a serious problem for more and more young people. This group of young people who take practical actions to reduce carbon emissions in their lives and support the carbon emission reduction targets just proposed by the China Municipal Government are also dubbed as "low-carbon people".
On the eve of the Copenhagen Climate Summit, our reporter visited the new human beings around us in advance.
I was shocked.
I produce 4 tons of carbon a year.
Miss Liu, who works in a big bank in Nanjing, told reporters that it is not a whim that she is willing to try a "low-carbon" life. One day a month ago, she stumbled across a "carbon calculator" on the Internet. For fun, she decided to calculate her carbon emissions.
When you click on the page of "carbon emission calculator", many questions will appear, for example, do you use energy-saving light bulbs at home? What is the total number of long-distance flights you take every year? ..... As long as you answer questions patiently, the calculator will calculate the amount of carbon dioxide you produce in a certain period of time. "Just out of curiosity, I calculated it myself. In this way, I actually produce 4 tons of carbon dioxide a year, which is much higher than the average of 2.7 tons per year in China. " Miss Liu admitted that the result was a bit substandard, which made her blind. She began to realize that there are indeed many wasteful behaviors in life. "Some of my living habits must be changed, such as soaking rice in advance for 10 minutes, and then cooking with a rice cooker, which can reduce electricity by 4.5 kWh and reduce carbon dioxide emissions by 4.4 kg. These are easy, and if you don't do it, it will become the source of waste. "
I haven't bought a new T-shirt for four years.
Reduce carbon emissions 185.6kg.
365,438+0 environmental T-shirts are worn in turn, and they usually bring chopsticks to eat ... The wearing of the graduating class of Nanjing Vocational and Technical College of Chemical Technology has driven a group of students around them to advocate low carbon with their own actions.
Since entering school, Dai has participated in the school's Every Grass and Tree Environmental Protection Association and has become the core backbone of the association. Because he took an active part in many environmental protection activities, he got many commemorative T-shirts. "After every activity, I basically don't wear environmentally-friendly T-shirts. I think it's wasteful and not environmentally friendly. Later, I thought, I'll wear it as a summer T-shirt, which not only reduces carbon emissions, but also can use the propaganda information on the environmentally-friendly T-shirt many times. Why not? "
In the past four years, Dai has accumulated 365,438+0 T-shirts. Except for the two T-shirts I bought when I entered school, I wear such clothes in other summers. Wearing only one piece of clothing has reduced carbon dioxide emissions by 65,438+085.6 kg in the past four years. "Summer clothes are all green T-shirts, not to save money. Buying less unnecessary clothes can reduce carbon dioxide emissions by 6.4 kilograms. I want to call on everyone to live a low-carbon life with action. "
Adopt 7 camphor trees
Offset employees' carbon emissions.
DSM (China) Company, located in Taishan Road, Hexi, is more direct on the issue of "low carbon". They planted seven camphor trees in front of their house to offset the carbon emissions of their employees.
Don, the boss of the company, is a real Englishman. He said that many large enterprises in Europe will make a "carbon offset plan", that is, calculate the carbon dioxide emissions generated by each employee in their daily activities, and then pay the corresponding fees to specialized agencies to offset the "carbon emissions" of their employees by planting trees and purchasing environmental protection equipment.
He really calculated an account: the company has 40 employees, and walking and cycling do not produce carbon emissions, while the carbon emissions per kilometer by bus are 0.069 kg, by motorcycle is 0.094 kg, by electric car is 0.043 kg, by subway is 0.042 kg, and driving a private car is the highest, reaching 0.1kloc-0/kg per kilometer. Every employee's means of transportation and travel route are counted one by one, and then the kilometers are calculated by map, 264 working days a year, one round trip every day ... Tang finally concluded that the amount of carbon dioxide emitted by all employees using means of transportation is 9.38 1 ton. Coupled with the carbon emissions generated by office computers, office electricity, printers, fax machines, photocopiers and UPS power supplies, the carbon emissions generated by employees' travel and office equipment are 80.8 1 ton a year. A tree can absorb about 0.033 tons of carbon dioxide every day and 12.045 tons a year. In this way, he adopted seven street trees.
"Low carbon" is a realm.
The core is saving electricity and energy.
"At work, try to use printers as little as possible; Walking to work at ordinary times can reduce carbon dioxide emissions. " Rolling, who graduated from Nanjing University of Science and Technology, is also a pioneer of "low-carbon life".
The idea of saving electricity and energy is full of his life. "I try not to use a printer, but communicate by email so that I can work without paper. I won't print all the photos in the camera and back them up to the computer. "
For the use of computers, Rolling also operates in strict accordance with the method of saving electricity. For example, set the time when the computer monitor enters the sleep mode to 1 minute; In addition, if he goes out for something, he will set an automatic shutdown time on the computer in case he forgets to turn off the computer that day. With all these small details, Rolling can reduce its carbon consumption by about 2kg per day.
"Almost all the appliances in my home are energy-saving appliances, and the air conditioner will only be turned on in extreme weather." Rolling said that "low-carbon life" is full of every detail of family life. "Flush the toilet with mopping water or water the flowers; Taomi water washes vegetables. " Every saving idea helps to reduce carbon emissions. Our reporter Wang Juan.
■ "Low carbon" is at the forefront.
Please sleep underground with carbon dioxide.
Scientists at Dongda University are studying this seemingly crazy topic.
As a by-product of industrial civilization, the concentration of carbon dioxide in the atmosphere is getting higher and higher, which makes human beings who enjoy the fruits of civilization break their brains. It will take time for renewable energy and new energy to replace fossil fuels. It is impossible to "reduce carbon" by greening overnight, but carbon dioxide is "heating" the earth every minute-is there a faster way to "control carbon"?
The answer is to drive carbon dioxide underground-this seemingly crazy idea is becoming a hot topic in the world at present. It is worth noting that scientists from Dongda University also participated in the research of this subject.
Capture technology is becoming more and more mature.
"It is of great significance to discuss the capture and storage of carbon dioxide in the current environment." Professor Zhao Changsui from the Institute of Thermal Energy Engineering of Southeast University told the reporter that the research group of their school has been paying attention to this topic since 200 1.
Professor Zhao introduced that it is possible to obtain high-purity carbon dioxide from the tail gas of power generation boilers by using liquid absorbent at present, and industrial demonstration has been completed in China, and the research level is equivalent to that in the world.
"Different coal-fired power generation methods have different ways to capture carbon dioxide. For example, the technology of circulating fluidized bed combustion with oxygen supported by our 973 Program can capture CO2 at a lower cost. At the same time, by adding cheap and easily available limestone, cyclic calcination and carbonation reactions occur, and high-purity carbon dioxide is obtained while improving power generation efficiency, preparing for the next use or storage. " Professor Zhao introduced that the international cooperation of these new power generation technologies is currently under negotiation.
The sequestration of carbon dioxide is the trend.
Where did the captured high-purity carbon dioxide go? This is the most critical step to solve the greenhouse effect. Professor Zhao revealed that there are two ways to treat the collected carbon dioxide: utilization and storage. In terms of utilization, Huaneng Beijing Thermal Power Plant purified the carbon dioxide captured in the flue gas after combustion and used it to make carbonated drinks, with an annual capture capacity of 3,000 tons. But this method only temporarily closes the carbon dioxide, and once the can is opened, the captured carbon dioxide returns to the air.
The United States, Japan and other developed countries have carried out research and experiments on the complete storage of carbon dioxide, and pumped high-purity carbon dioxide into the ground through gas pipelines or tankers, so that it will never become a disaster-this technology has been realized. It is understood that oil and gas fields that have been mined or are close to mining, unexploited coalfields and saline water layers below 1,000 meters are ideal storage places.
"In the long run, sequestration of carbon dioxide is the general trend, but reducing costs and ensuring safety are still the focus of attention. Once the sealed carbon dioxide leaks, dense suffocating gas will definitely cause human disasters, and this consequence is likely to be borne by our future generations. " Professor Zhao added that many domestic carbon capture projects are being started one after another, but there is still a long way to go to fully realize the whole process of "capture-transport-storage" in China.