It has been praised for decades, and the earth is going bald because of it, but you still use it every day...
Friends, the "plastic restriction order" has been implemented in China for 12 years. Are you surprised?
The author believes that everyone has a common understanding: plastic bags pollute the environment, and most people think that using paper bags is to protect the environment.
Beautified paper bag
Life cycle: the entire process from the acquisition of raw materials, product production, storage, transportation and disposal after use, to waste recycling.
In 2019 alone, my country's wood pulp consumption was 35.81 million tons
The wastewater produced by the alkali pulping process in the papermaking industry contains a large amount of lignin and is dark brown in color, called "black liquor". Black liquor contains a large amount of suspended solids, organic pollutants and toxic substances, and direct discharge into water bodies will cause serious pollution.
In 2017, the national pulp output was 16.2092 million tons. From January to November 2018, the national paper product output was 107.15 million tons. That is to say, my country's paper production capacity is about 7 times that of pulp production capacity. Papermaking consumes 15 tons of water per ton of paper, and pulping consumes 30 tons of water per ton of pulp. Papermaking wastewater is still 3.5 times the total pulping wastewater.
There is a formula for wastewater discharge standards:
If the factory abides by laws and regulations, perhaps the water that meets the standard will be relatively "clear." If not, maybe in some inconspicuous corner, these "poisonous water" will quietly pollute everything.
Hydrogen sulfide has irritating and cell-asphyxiating effects. When the concentration of inhaled hydrogen sulfide is low, obvious irritation can be felt; when the concentration of inhaled hydrogen sulfide is high, the olfactory nerve endings are paralyzed, leading to coma or even death.
In addition to odor, solid pollutants such as green mud and white mud will also be produced, and most of them will be landfilled. Not only will it occupy and pollute land resources, but it will also pollute groundwater. Green mud residue is mainly sodium carbonate and sodium sulfide: 2NaOH+CO2=Na2CO3+H2O. Because it contains a small amount of iron ions, it is green. White mud residue is mainly causticization product calcium carbonate: Na2CO3+Ca(OH)2= 2NaOH+ CaCO3
Subsequent papermaking will also cause noise pollution, power consumption, and transportation will cause exhaust pollution...
The paper bag has finally arrived in our hands. Looking at it now, do you still think it is environmentally friendly?
Paper bags are no longer simple
What is very intriguing is that the paper industry is considered one of the largest sources of pollution to the environment. As we all know, paper bags are considered environmentally friendly, but no one questions it. What happened in the middle? Is it just because of its high recycling rate and easy decomposition?
From the "China Paper Industry 2019 Annual Report", the author found the following data. We can use it as an entry point to explore some reasons.
Let’s look at the ratio of various consumption volumes of paper and cardboard to total consumption volume in 2019:
There must be one reason for this: paper packaging is more environmentally friendly.
So what makes "paper packaging more environmentally friendly" deeply ingrained in people's minds?
This has to mention “environmental protection organizations for environmental protection”.
But in fact, ordinary polyethylene plastic bags can be degraded by light. Through ultraviolet radiation, the polymer chains of polyethylene begin to become brittle and break, and eventually decompose into microscopic particles. However, because scientists do not know how long this process will take, they have given periods ranging from 10 to 1,000 years.
Thinking about it carefully, whenever we hear the word "environmental protection", it seems to be inherently correct and just. When we see the discoloration of the river water, the garbage in the ocean, and the hungry polar bears, we can feel the guilt of being a human being towards the earth and the harm we have done to other living things. We have a strong sense of guilt and rarely explore some data. true or false.
Some businesses have seen the business opportunities hidden behind "paper bags are more environmentally friendly", and they have contributed to this "environmental protection movement". "Paper" seems to be omnipotent. It can not only be made into handbags, but also cups, straws, clothes, decorations, etc., and then all are promoted as "environmental protection".
Moreover, people's requirements for paper bags have not been reduced because of environmental awareness. Beautiful, practical, and high-end, in order to cater to the needs of the market, manufacturers have exerted various skills on paper bags.
Although paper bags do have the advantage of being decomposed quickly, with the popularity of paper bags, their use and discard frequency have also accelerated significantly, and the final result will only run counter to environmental protection. However, among the more environmentally friendly materials that are currently available, paper bags are considered the best choice.
In the absence of a better choice, if you want to do your part to protect the environment, try to use less and reuse paper bags.
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