What are the solutions to waste sources?

For shallow surface cracks, local abrasion pits, and not serious surface decarburization and other defects, but the remaining wall thickness of the grinding place should meet the strength requirements. The sanding area should be smooth and have a smooth transition. Surface flaw detection should be carried out after grinding or surfacing welding.

For the treatment of cracks with relatively large depths, especially penetrating cracks, if you want to use heat sources such as carbon arc gouging, then the most harmful defects of the pressure vessel are all kinds of cracks, and it is necessary to open anti-crack holes or anti-cracking grooves at both ends of the cracks, and after grinding, it is necessary to do coloring or magnetic particle inspection to confirm whether the defects have been completely eliminated. Small cracks and scars can be repaired by surfacing after they are completely removed by grinding method. However, if the depth of the defect does not exceed the smaller value of the plate thickness after deducting the corrosion allowance, after removing the defect, it only needs to be smoothed; 7 or 1, the purpose of this is to prevent the crack from continuing to expand after being heated, and in the case of general pressure vessels, it can be removed by grinding method.

Here are some wasteful wild oak behaviors like unopened water being discarded after a meeting:

1.Waste of food in the restaurant.

2.Items purchased on a large scale but not used.

3.Waste of electricity and water.

4.Unnecessary use of paper and printed materials.

5.Indiscriminate use of resources, such as the use of disposable items, and the use of private car stalks instead of public transport.

6.Use expired food or medications.

7.Throw away clothing and other items instead of donating or **utilizing.

8.Waste of time, such as unnecessary social** use, killing time, etc.

9.Waste in employment, education and training, such as choosing the wrong major, missing classes, wasting time on meaningless work, etc.

10.Waste of natural resources, such as overexploitation and pollution.

Recently, the news that a hotel had discarded 43 bottles of unopened mineral water after a conference attracted everyone's attention and sparked a discussion about avoiding waste. In our daily lives, there are many similar wastes that need to be eliminated. Specifically, these wastes include ordering too much food and discarding it when you can't finish it, turning on the lights and turning on the faucet without turning it off in time, slipping, and discarding things you don't like.

1. If you order too much food and can't finish it during the meal, you can discard the steak section at will.

One of the most intuitive phenomena of waste in our daily life is the waste of food. Many people order a lot of food at mealtimes, but eat very little. For those foods that are not finished, throw them away at will.

This results in a very high level of waste. For this kind of waste, we should order according to our own diet on the one hand, and on the other hand, we can take it home when the food is not finished, so as to effectively avoid waste.

2. If you don't turn off the lights and faucets in time after turning on the lights, you will be wasted of water and electricity. Spring gives way.

Many people in daily life have a very common wasteful behavior, that is, after turning on the lights and faucets, they do not turn off in time, but cause the phenomenon of "ever-bright lights" and "long-running water". This phenomenon causes a waste of water and electricity, a waste of precious resources, and is a big waste. For this problem, we should turn off the lights and the faucet at will to promote saving and avoid waste.

3. Discard things you don't like, causing unnecessary waste.

In addition to the above-mentioned waste, there is another phenomenon that is also common in our daily life, and that is to throw away things that we don't like. In fact, although the style of those things is not what I like, but it itself is intact and not badly functional, and the waste caused by random discarding is very serious. For this problem, we should store these things and use them when someone needs them, so that we can effectively avoid waste.

1. Do not cherish limited resources and discard them arbitrarily, such as mining only lump coal in the mine and throwing away coal powder; The technology is immature or backward or the operation is not refined, resulting in useful resources being thrown away as waste without being used;

2. The utilization mode is unreasonable, resulting in the failure to give full play to the benefits of resources, such as crop orange stalks fermented to biogas for energy, biogas residue can cultivate edible fungi, biogas water fertilizer fields, etc., can be subject to a variety of economic and environmental benefits, but many orange stalks are directly used as fuel to burn; Although waste paper in many departments or students is a huge papermaking resource, it is very rare, and there are very few waste glass, waste plastics, packaging glass bottles, etc.

1. Do not cherish limited resources and discard them arbitrarily, such as mining only lump coal in the mine and throwing away coal powder; The technology is immature or backward or the operation is not refined, resulting in useful resources being thrown away as waste without being used;

2. The utilization mode is unreasonable, resulting in the failure to give full play to the benefits of resources, such as crop orange stalks fermented to biogas for energy, biogas residue can cultivate edible fungi, biogas water fertilizer fields, etc., can be subject to a variety of economic and environmental benefits, but many orange stalks are directly used as fuel to burn; Although waste paper in many departments or students is a huge papermaking resource, it is very rare, and there are very few waste glass, waste plastics, packaging glass bottles, etc.

That's the one below, yes.

To people who destroy the environment and waste resources:

Hello! I am an ordinary schoolboy, and the reason why I am sending you this letter is for the sake of our only mother, the earth.

The earth is the cradle of our human life and our kind mother. However, compared with the vast universe, the earth is small, although the earth has a lot of resources, but after all, it is still limited, who does not want to make their home more beautiful, who does not want their children and grandchildren to live a happy life, but the earth, the mother who originally had a beautiful face and a healthy body, is facing the big problem of aging and resource depletion.

Take our most common tree, for example! According to a report published by the World Observatory in 1999"The earth's forest resources are disappearing at a rate of 168 million hectares every year, and although human beings call for the protection of forest trees every year, they are making forest resources disappear every year. A piece of paper, a pair of wooden shoes, disposable chopsticks, a piece of pure wooden furniture ......It's all the ** of the assassination forest!

The earth gives birth to us like a mother; We should also protect our mothers like sensible children; The earth's resources are the flesh and blood of the mother, and we must not destroy the mother earth that gave birth to us and raised us.

1.Stop littering and should throw your garbage in the sorted bins.

2.A variety of flowers, grasses, trees and other plants add color to the earth.

3.No scribbling, no open defecation and spitting.

4.Don't throw garbage in clean water and don't use single-use plastics.

5.If you have a car, drive as little as possible, reduce polluting gases, and make our sky bluer.

As a master of the earth, although I am a primary school student, I also have the responsibility and obligation to call on everyone to protect the earth. If the whole world is environmentally friendly, then I believe that in the near future, it will be a beautiful and warm home before our eyes.

Finally, I hope you will take my advice!

I wish you all good health and success in your work.

1.In my class, I found that there are many wastes of resources, such as going to other classrooms, we either don't turn off the fans or lights, which are all manifestations of waste of resources.

2.Many children draw a few on a piece of paper and throw them away, which is very wasteful.

3.Some people turn on the washing machine after washing a piece of clothing, which is also wasteful.

The damage to the ozone layer can make the weather hotter.

There are many opinions among scientists about the causes of the depletion of the ozone layer in the atmosphere. However, most people agree that excessive human use of chlorofluorocarbons (CFCs) is the main cause of ozone depletion. Chlorofluorocarbons (CFCs) are man-made chemicals that were produced by DuPont in the United States in 1930.

After World War II, especially after entering the 60 years, it began to be used in large quantities, mainly as aerosols, refrigerants, foaming agents, chemical solvents, etc. In addition, halons (used in fire extinguishers) and nitrogen oxides also contribute to the depletion of the ozone layer.

In the stratosphere, 20 30 km above the ground, there is a zone of concentrated ozone in which there is a dynamic equilibrium of oxygen atoms (O), oxygen molecules (O2) and ozone (O3). However, reactive substances such as nitrogen oxides, chlorine, bromine and other reactive groups can disrupt this balance and shift it in the direction of ozone decomposition. And the extraordinary stability of CFCs makes it easy to aggregate in the atmospheric stratosphere, and its effects will last for a century or more.

Under the action of strong ultraviolet radiation, they photolyze chlorine and bromine atoms, which become catalysts for ozone destruction (one chlorine atom can destroy 100,000 ozone molecules).

I don't know if it's strange First, air pollution.

1 Pollution status.

2 Pollution**.

3 Pollution hazards.

2. Water pollution.

1 Pollution status.

2 Pollution**.

3 Pollution hazards.

3. Waste pollution from the body.

1 Pollution status.

2 Pollution**.

3 Pollution hazards.

4. Noise pollution.

1 Pollution status.

2 Pollution**.

3 Pollution hazards.

I didn't pull the plug out when I turned off the TV.

What is being used and what is being eaten and worn is being wasted.