How many kilometers can the radius of air pollution in a steel plant?

The radius of air pollution in a steel plant mainly depends on factors such as the amount of emissions from the plant, the types of pollutants emitted, the ambient temperature and humidity, wind direction and wind speed. As a result, there may be large differences in the radius of air pollution in different steel plants.

The air pollution radius of a steel plant is usually determined by assessment methods such as environmental impact assessment, in which parameters such as plant size, production process, emission type, and emission rate of the steel plant will be modeled to determine the air quality status around the steel plant and the direction and distance of air pollutants diffusion.

In general, the radius of air pollution in a steel plant can range from a few kilometers to tens of kilometers, and the specific extent needs to be assessed and calculated according to the situation on the ground. In order to minimize the pollution of the steel plant to the surrounding environment, the steel plant can take a series of environmental protection measures, such as waste gas treatment, garbage disposal, pollutant emission reduction, energy conservation and emission reduction, etc., to meet various environmental protection standards and requirements.

This problem is complex and involves many factors: surrounding climatic conditions (wind direction, wind speed, wind frequency, temperature, etc.), chimney height and outlet diameter, gas temperature, and particulate matter characteristics of flue gas (including particle size, density, etc.).

It depends on what kind of steel plant, the pollution radius of the small steel mill in Hebei and the pollution radius of the German ThyssenKrupp steel mill can not be generalized.

The sky we usually talk about is actually the atmosphere (1) Troposphere The troposphere is the lowest layer of the atmosphere, and its thickness varies with latitude and seasons. 16-18km near the equator; l0-12 km in the mid-latitudes and 8-9 km near the poles. Thicker in summer and thinner in winter.

The distinctive feature of this layer is that the air temperature decreases with altitude, and for every 100 m of rise, the temperature decreases by 0. The air close to the ground expands and rises under the influence of the heat emitted from the ground, and the cold air above falls, so that a strong convection is formed in the vertical direction, and the troposphere is named for this. Second, the density is large, and more than 3 4 of the total atmospheric mass is concentrated in this layer.

In the troposphere, it can be divided into two layers due to the different influences of the earth's surface. Below l-2km, it is strongly affected by the mechanical and thermal action of the surface, commonly known as the friction layer, or boundary layer, also known as the lower atmosphere, and most of the pollutants in the atmosphere are active in this layer. Above 1-2 km, it becomes less affected by the surface and is called the free atmosphere, where the formation of major weather processes such as rain, snow and hail occurs.

The troposphere is most closely related to humans. (2) Stratosphere The atmosphere from the top of the troposphere to about 50 km is the stratosphere. In the lower stratosphere, that is, below 30-35kNl, the temperature changes little with the decrease of altitude, and the air temperature tends to be stable, so it is also called the stratosphere.

Above 30-35 km, the temperature increases with altitude. The characteristics of the stratosphere: first, there is no convective movement in the air, and the advection movement has a significant advantage; Second, the air is much thinner than the lower layer, the content of water vapor and dust is very small, and weather phenomena rarely occur; Third, in the range of about 15-35 km high, there is a layer of ozone layer about 20 km thick, because ozone has the ability to absorb solar short-wave ultraviolet rays, so the temperature of the stratosphere rises.

iii) Mesosphere The mesosphere from the top of the stratosphere to an altitude of 80 km is called the mesosphere. This layer of air is thinner and the temperature decreases with altitude. (4) Thermosphere The thermosphere from 80km to about 500km is called the thermosphere.

The temperature of this layer increases rapidly with the increase in height, the temperature in the layer is very high, the diurnal variation is great, and a small amount of moisture is still present in the lower part of the thermosphere, so there are occasional silvery-white and slightly cyan noctilucent clouds. (5) Escape Layer The atmosphere above the thermosphere is called the escape layer. Most of the molecules in this layer of air are ionized under the action of the sun's ultraviolet rays and cosmic rays; So that the content of protons greatly exceeds the content of neutral hydrogen atoms.

The escape layer is extremely thin and has a density almost the same as that of space, so it is often referred to as the outer atmosphere. Since the air is subject to very little gravity, gases and particles can fly out of the Earth's field and into space. The escape layer is the outermost layer of the Earth's atmosphere, and the upper bound of this layer is not yet unanimously agreed upon.

In fact, there is no clear boundary between the Earth's atmosphere and interstellar space. The temperature of the escape layer increases slightly with height.

The length of the universe is measured in light years, and the latest research suggests that the diameter of the universe can be 93 billion light years, or even larger.

The broad definition of the universe is the general term for all things, the unity of time and space. The narrow definition of the universe is space and matter beyond the Earth's atmosphere. The definition of "cosmos" in "cosmos" is the definition of "cosmos" in the narrow sense, and cosmonautics means to sail in space beyond the atmosphere.

Some of the objects of the universe observed by humans are roughly made up of ordinary matter (the matter that makes up stars, planets, gases, and dust) or "baryons", dark matter, and dark energy. Baryonic matter makes up the "spider webs" of intergalaxies.

10 28cm, which translates to 10 23km, is calculated using the law of gravitation and the formula for the volume of a sphere.

Only half of space is known now.

Actually use kilometers to describe the universe, I advise you to read more books!

Who knows how big the universe is, and what is outside the universe.

The distance between the universes is measured not in kilometers, but in light years. Because the kilometer unit is too small!

The light-year is a unit that measures the space-time distance between celestial bodies, and is generally used to measure the space-time distance between celestial bodies, which literally refers to the distance that light travels in a straight line in a vacuum for a year, about 9,460.5 billion kilometers, which is calculated from time and the speed of light.

"Year" is a unit of time, but "light year" is not a unit of time, but a unit in astronomy that measures the distance between time and space of celestial bodies. The distance between celestial bodies in the universe is very far, far away, if we use meters and kilometers (kilometers) that we use in our daily life as the unit of measurement, then the number of measuring the distance of celestial bodies is often more than a dozen or dozens of digits, which is very inconvenient. So astronomers created a unit of measurement, the light-year, which is the distance that light travels in a year in a vacuum.

Distance = speed of time, the speed of light is about 300,000 kilometers per second (299,792,458 meters per second), and 1 light year is about 9,460.5 billion kilometers.

The farthest celestial body that humans can now see is 13.7 billion light-years away from Earth, and we believe that the universe was born 13.7 billion years ago. But because the universe expands faster than the speed of light, the scale of the universe is inferred to be more than 13.7 billion light-years.

There is a possibility that sometimes the groundwater will be contaminated by leaks in the pipe network.

The pollution factors of steel plants include suspended solids, volatiles, cyanide, chemical oxygen demand, oils, hexavalent chromium, zinc, and ammonia nitrogen.

You can find someone to test your water to see what is exceeded, if it is above, it may be the pollution of the steel plant, but it is not recommended to test it yourself, because the test fee is very expensive.

Absolutely.

There are a large number of heavy metal ions and toxic and harmful substances in steel wastewater...

Groundwater will never be completely separated from surface water, there will always be connected places, and surface water will permeate downward, pollutants will still enter the ground, but also into the soil, after all, it is not good, the best way is to build a sewage station in the steel plant (according to the scale of treatment, it is a station or a plant), before discharge, and then discharge...

Earth's Radius: Equatorial radius = kilometers.

Polar radius = km.

Average radius = km.

The conventional range of the F-22 "Raptor" is 4000 kilometers, and the combat radius is one-half of it (divided into the "attack radius" of the front part and the "return radius") of the rear part), that is, 2000 kilometers, but after all, the combat is not equivalent to ordinary level flight at a constant speed, but includes a variety of maneuvering work, which is bound to be related to its fuel consumption and speed, and also affects its combat radius, and the actual combat radius of F-22 is about 1300-1500 kilometers.

The cost, quantity, and performance of the F-22 are related to its unique attack mode, that is, to use medium-range or long-range air-to-air missiles to carry out medium-range saturation attacks, and then make a supersonic turn and quickly break away under the cover of the aircraft behind. Encore.

This attack method will save part of the combat radius from another angle (after the medium and long-range air-to-air launch, the missile will help it).

In addition, the picture posted by the landlord is an F-35 JSF, not an F-22 Raptor.

F-22 size: wingspan meters; fuselage meters; machine height meters; Wing area meters. Weight:

Rated take-off weight in kilograms. Powerplant: Two Pratt & Whitney F119-PW-100 turbofan engines with afterburner (2 13,900 kgf).

Flight characteristics: maximum flight speed 1950 km h; The maximum flight speed at ground near the ground is 1480 km/h; The actual maximum aircraft altitude is 18,000 meters; combat radius 1,300 1,500 km; Maximum usage overload.

F A-22 landing gear Because the aircraft is equipped with two F-119 turbofan engines with a high thrust-to-weight ratio, it can cruise at a speed of m without using afterburner, with a maximum flight speed of m, a maximum flight angle of attack of 75 degrees, a maximum take-off weight of 28,000 kg, a practical ceiling of 15,240 meters, a combat radius of 1,450 km, and a range twice that of the F-15 aircraft.

20 billion light years, kilometers you can convert yourself.