Supporting environmental protection bags can only partially reduce white pollution. The real root is to popularize education and combat the source of white pollution.
Hazards of non-environmental protection bags:
Sanitation experts point out that although non-environmental protection bags bring a lot of convenience to the public, they also pollute the environment. Some non-environmental protection bags can't be used to hold food, which is very harmful to human health. Medical experts point out that food, especially cooked food, is often easy to deteriorate after being packaged in non-environmental protection bags. People who eat this spoiled food are prone to food poisoning symptoms such as vomiting and diarrhea. In addition, the plastic itself will release harmful gases, which will accumulate in the sealed bag for a long time, and the concentration will increase with the increase of sealing time, resulting in different degrees of pollution of food in the bag, which has a particularly prominent impact on the healthy development of children.
Non-environmental protection bags often used in street stalls are very harmful. Processed from recycled waste plastic products, it is extremely harmful to human body and cannot be used to package direct food; In addition, PVC plastic products can not be used to store alcoholic food and oily food, otherwise the lead in the bag will dissolve into the food; At the same time, this kind of non-environmental protection bag can't put food with temperature above 50℃.
Environmental experts pointed out that some non-environmental bags used in the market are not allowed to contain food. There are three kinds of non-environmental protection bags: one can neither touch the skin nor put food, but can only be used to hold building materials; One is for clothes; There is also a kind that can be used to barely hold food. Some plastic products are added with stabilizers, and these stabilizers are mainly lead stearate, which will cause cumulative lead poisoning.
Insiders pointed out that most of the non-environmental protection bags currently sold and used in the market are produced by small enterprises or family workshops in various places, and a considerable part of them are recycled plastic products. Waste plastic, industrial waste and plastic waste discarded by medical institutions collected by garbage stations are recycled and processed into food bags without disinfection and put into the market.
These recycled plastics contain bacteria and carcinogens that seriously exceed the standard. Using this plastic product to package cooked food directly into the mouth will have extremely serious consequences for consumers' health. This kind of non-environmental protection bag contains a lot of bacteria invisible to the naked eye, and long-term use of this disposable plastic food bag can easily lead to chronic food poisoning.
In this regard, the public can use the following methods to detect toxic and non-toxic non-environmental protection bags:
Sensory detection method: non-toxic and non-environmental protection bags are milky white, translucent, or colorless and transparent, elastic, smooth to the touch and waxy on the surface; Toxic non-environmental protection bags are turbid or yellowish in color and sticky to the touch.
Water detection method: put the non-environmental protection bag into the water and press it into the bottom. Non-toxic and non-environmental protection bags can surface with a small proportion, while toxic and non-environmental protection bags can sink with a large proportion.
Shake detection method: grab one end of the non-environmental protection bag by hand and shake it vigorously, so that the person who makes a crisp sound is non-toxic; Dull sounds are poisonous.
Fire detection method: non-toxic polyethylene non-environmental protection bag is flammable, with blue flame and yellow top, which drips like candle tears when burning, with paraffin smell and less smoke; The toxic PVC non-environmental protection bag is non-combustible, and goes out immediately after leaving the fire. The flame is yellow, the bottom is green, it can be softened and stretched, and it has a pungent smell of hydrochloric acid.
With the development of economy, shopping in supermarkets has become an indispensable part of modern life, and people have long been accustomed to the non-environmental protection bags provided by supermarkets for free. It is noteworthy that the consumption of non-environmental protection bags in China is increasing year by year, and plastic packaging accounts for one-third of the total packaging materials, of which the annual output of plastic packaging materials in Shanghai is as high as 6.5438+0.5 million tons. The harm of these colorful and large and small environmental protection bags to the environment is undoubtedly amazing.
What are the hazards of non-environmental protection bags?
The environmental pollution caused by non-environmental protection bags mainly includes "visual pollution" and "potential harm". Among them, "visual pollution" refers to the destruction of the city landscape, which is the most prominent problem of "white pollution". "Potential harm" refers to the long-term environmental problems caused by the difficulty of degradation of waste plastic products after they enter the natural environment. Plastics have a stable structure and are not easily destroyed by natural microorganisms, which means that if they are not recycled, waste plastics will become pollutants in the environment and continue to exist and accumulate. It will not only affect the development of industrial and agricultural production and threaten the living environment of animals, but also affect the sustainable utilization of land and the comprehensive utilization of other organic wastes due to improper treatment.
In fact, many citizens have realized the harm of non-environmental protection bags. In order to reduce pollution, they will reuse non-environmental protection bags, for example, putting garbage or going to the market to buy food. However, relying solely on the efforts of ordinary citizens is far from enough. Non-environmentally friendly bags are always piled up at home, and the speed of accumulation greatly exceeds the speed of consumption. Many non-environmental protection bags are still discarded as waste. In order to reduce the harm of non-environmental protection bags and make the city a clean environment, we must start from the source and reduce the distribution of non-environmental protection bags. ......