[Chemical Fertilizer] What are the main components of chemical Fertilizers in Chemical Fertilizer?

What are the main components of chemical Fertilizers

1 , nitrogen fertilizer: Chemical Fertilizer with nitrogen nutrition elements as the main ingredient, including ammonium bicarbonate, Urea, ammonium sales, ammonia, ammonium chloride, ammonium sulfate, etc. Essence

2 , Phosphate Fertilizer: Chemical Fertilizer with phosphate nutrition elements as the main ingredient, including ordinary excess calcium phosphate, calcium magnesium phosphate Fertilizer, etc. Essence

3 , Potassium fertilizer: Chemical Fertilizer with potassium nutrition elements as the main ingredient. At present, there are not many. The main varieties are potassium chloride, potassium sulfate, potassium nitrate, etc.

4 , Repeated and mixed Fertilizer: That is, Fertilizer contains two Fertilizer three elements (nitrogen, phosphorus, potassium) binary compound, mixed Fertilizer, and trigly compound, mixed Fertilizer containing nitrogen, phosphorus, and potassium. Among them, mixed Fertilizer promoted quickly throughout the country.

5 , Trace element Fertilizer and certain medium -sized element Fertilizers: The former is Fertilizer with trace elements such as boron, zinc, iron, molybdenum, manganese, copper, and the latter such as calcium, magnesium, sulfur and other Fertilizers.

6 Followed by some crops: such as steel slag silicon Fertilizer applied on rice, cobalt Fertilizer applied to the bean crops, as well as agricultural rare earths used on sugarcane and fruits.

What are the harmful components in chemical Fertilizers?

1 Damage to crops

Fertilizers are composed of various salt, so these Fertilizers composed of salt categories have been applied for a long time. When Fertilizers enter the soil, they will increase the concentration of soil solutionDo not absorb water from the soil solution, but the water in the cytoplasm is inflated into the soil solution, causing crops to be harmed.Typical examples are crops"Burning seedlings"

After a large amount of pesticides is applied, pesticide residues or deep groundwater are caused, which also causes pollution to water.In recent years, the low price of garlic is because pesticide residues have exceeded standards. Foreign acquirers have canceled acquisitions and caused.We may also be unqualified by what we eat, but the awareness of the domestic people is not so high, and the cost of the test is too high.Ordinary people cannot afford it.

2 Pollution to the environment

Rich nutrition of rivers, lakes, and inland sea.The cause of richer nutritional in the waters is mainly to increase the content of nitrogen and phosphorus in water, so that the algae and other aquatic plants grow too much.

The soil is polluted and the physical properties of the soil deteriorate.Long -term excessive and simply applying chemical Fertilizers can acidify the soil.The ammonia ion of organic and inorganic complexes in the soil solution increased and the ammonia ion increased by organic and inorganic complexes. CA2 As well as MG2 Wait, scattered soil collagen, damage to the soil structure, the landing of the land, and directly affect the cost and quality of agricultural production and crops.

Increased toxic ingredients in food, feed and drinking water.Nitrite biological toxicity is larger than nitrite 5 ~ 10 Double, a combination of nitrite and amine N -Nitukin compound is a strong carcinogen (see N -Nitogen compounds and cancer).The content of nitride in the well or river water in areas with chemical Fertilizers will increase, or even exceed the standard of drinking water.Too much soil with chemical Fertilizers will increase the nitrate content in crops such as vegetables and pastures.The nitrite content in food and feed is too high, which has caused children and livestock poisoning accidents.Chemical Fertilizer also contains other impurities, such as cadmium in phosphorus ore 10 ~ 100ppm , Lead 5 ~ 10ppm These impurities can also cause environmental pollution.

Increased nitrogen oxide content in the atmosphere.The nitrogen fertilizer applied to farmland has a considerable amount of volatilization from the surface of the soil into a gas and entering the atmosphere.A considerable part of the form of organic or inorganic nitrogen enters the soil. Under the action of soil microorganisms, it will be converted into nitrogen and nitrogen oxides from the pumpkin, adsorption state, and water -soluble.To prevent environmental pollution, control and manage chemical Fertilizers used.

1. Which one is better for barbecue carbon

The charcoal grilled barbecue has a special flavor. Many people prefer to eat barbecue carbon and roast them. Some friends will buy barbecue charcoal and come back to bake themselves, but there are many types of barbecue carbon on the market.Intersection

1. charcoal

charcoal is a commonly used material for barbecue in the past. It is common in fruit charcoal. Its advantage is that it is ignited. The burning time is long and the price is relatively favorable.The temperature is also unstable, and the production of charcoal requires a large amount of forest wood, which is not good for environmental protection, so gradually gradually withdraw from the market.

2. Mechanical charcoal

Mechanical charcoal is squeezed into charcoal rods from the high temperature of the machine, which has the characteristics of flame -resistant, smoke -free, and tasteless. Although the combustion performance is slightly worse than the traditional charcoal, with the upgrading of technology and the development of environmental protection, mechanism charcoalGradually replaced the status of charcoal in the barbecue industry.

The main use of barbecue carbon is the above two types. For novice proposal mechanism charcoal, although it takes time for the fire, it has been stable for a long time after burning.Very flammable, but the burning time is not long enough, and it is generally only for combustion.

2. How much is the price of barbecue charcoal?

If you want to make charcoal grill at home, you must buy barbecue charcoal, so how much is a pound of barbecue carbon?

The price of barbecue charcoal on the market is not fixed. According to factors such as charcoal quality, purchase channels, and quantities of purchases. According to the market, the price of one pound is usually about one yuan to a few pounds.Mao pound.(The above price source network is for reference only)

3. How to distinguish between barbecue charcoal

When buying barbecue carbon, in addition to paying attention to the types and prices, the quality of barbecue charcoal must be paid special attention. So what kind of barbecue is better?

Generally speaking, depending on the quality of barbecue charcoal, it mainly depends on several aspects: whether charcoal is easy to break, whether charcoal is flammable, the burning time of charcoal is long, how high the calories of charcoal burning, how much burning smoke, etc. are generally good.The barbecue charcoal should not be easy to break, it is easy to ignite, the burning time is long (better for 2 hours), the burning is high in heat and the smoke is small.

Can charcoal remove formaldehyde?

Decoration will inevitably leave formaldehyde. For the sake of human health, you need to remove formaldehyde before check -in. There are many commonly used formaldehyde methods. The physical adsorption method is one of them. charcoal is one of the commonly used adsorption tools.

The reason why charcoal can be used to remove formaldehyde is mainly because it has adsorption effects. charcoal has a large amount of micropores and transition holes, so that it not only has a high ratio of surface area, but it will be very good after the cavity is excluded from the exclusion of the holes.Adsorption performance can adsorb indoor formaldehyde to remove formaldehyde.

2. Is the effect of charcoal adsorption of formaldehyde?

charcoal can be used to adsorb formaldehyde, but its dehumination effect is relatively general:

1. Ordinary charcoal has a certain adsorption effect, but its adsorption ability is unstable, and it is vulnerable to changes in the environment. It may absorb other substances. When reaching saturationEssence

2. There is a product in charcoal that is activated carbon. Its formaldehyde removal effect is better than ordinary charcoal, but the adsorption capacity of activated carbon is less adsorbed. Generally, it will be fully absorbed, and if there is too little, it will not work.

In general, charcoal can adsorb formaldehyde, but in many methods of removing formaldehyde, the effect of removing formaldehyde in charcoal is not particularly good. removing formaldehyde can still be ventilated by opening windows.

Third, how long is the charcoal removing formaldehyde to change again

charcoal uses adsorption to remove formaldehyde. When charcoal is filled, it needs to be replaced, otherwise it will release the formaldehyde inside. How often do the charcoal removed formaldehyde?

Generally, the replacement time of charcoal is related to the formaldehyde concentration of the house. The formaldehyde volatilization will be more powerful. It is recommended to change it once a week. If you change it, you can place it under the sun and reuse it.Consider change every 3-6 months.

Introduction to thermal insulation water tank

What is the insulation water tank

The insulation water tank refers to the addition of special industries and thermal insulation materials in the mezzanine of the water tank, so that the water tank must maintain a certain temperature to meet the needs of life or industrial.The insulation water tank can be divided into: stainless steel insulation water tank, pressure insulation water tank, and glass fiber reinforcement heating water tank according to the different processing materials.

The principle and structural diagram of thermal insulation water tank

The insulation water tank refers to a kind of insulation material used in the inside of the insulation cup to make the core layer, and then use the stainless steel water tank as the inner surface layer, and the outer layer is made of ordinary stainless steel plates.The combination of these three materials is the most suitable and best combination. In this way, the stainless steel insulation water tank is initially formed.Therefore, the insulation water tank is composed of three layers, the core layer, inner layer and outer layer.

The insulation medium of the core layer can be insulated by 50mm or 80mm polyurethane foam, polystyrene, PEF, etc.The inner layer is a stainless steel layer, so it is necessary to use a better -quality SUS304 food -grade stainless steel plate and galvanized plate.Finally, the outer layer is generally selected by the relatively ordinary stainless steel punching film block or a tablet. You can choose SUS304 stainless steel or SUS201 stainless steel for production! The thickness of the water tank board can be determined according to the size and height of the water tank.Of course, the material for insulation can also be used to choose asbestos or rock wools for insulation.

The insulation water tank hot water is out of the hot water

under.The insulation water tank consists of three parts: high water tank, depository and low water tank.The high water tank is equipped with a mechanical controlling water moisturizer, flushing valve and water leak valve, and electrode floating sub -switch. The valve seats of the water moisturizer and flushing valve are connected to the three -way flushing pipes set in the storage tank.Open the valve, connect the high water tank with the water storage tank; set up leveraged float switches in the low water tank, open the float valve core, connect the water tank with the low water tank; there are also submersible pumps, filters and sewage pipes in the low water tank, submersible pump out of the water pipe out of the water tankThe mouth is located in the high water tank, and the closure of the submersible pump is controlled by the electrode float switch in the high water tank.

How long can you keep the insulation in the thermal insulation?

Looking at the performance of the insulation water tank, at room temperature (20-30 degrees), the thermal insulation water tanks dropped by about five degrees within 24 hours. The lower the external temperature, the lower the temperature decrease of the water temperature.

Insulation water tank classification

Stainless steel insulation water tank

Advantages: high strength, good sealability, never leakage; light weight, convenient assembly; high corrosion resistance, never rust.

Disadvantages: The technical requirements are very high. If the technology is not comprehensive, or if the design is not good, the corrosion will occur, and the leakage will occur; the metal ions in the stainless steel will also affect the water quality.

Pressure insulation tank

Advantages: It is mainly divided into enamel water tanks and stainless steel pressure tanks; enamel water tanks are not easy to be corroded; stainless steel pressing water tanks will be very durable as long as the anti -corrosion problem is solved, and the overall is very light, convenient for transportation. At the same time, it can be designed in the overall structure.More big.

Disadvantages: As long as the temperature difference between enamel water tanks changes, porcelain will be dropped, and the water tank cannot be done too much, and there are certain problems in the handling of the transportation.If the design is not good, the corrosion will occur, and leakage will occur.

FRP insulation water tank

Advantages: easy installation, saving space, no leakage, light weight, high strength, impact resistance, bending, easy repair.

Disadvantages: It can only be stored in warm water and cannot store hot water; the sealing is not good enough, and it is easy to produce secondary pollution; the service life is short, and it is prone to cracks when using 1.5-3.5 years.

Solar insulation water tank

Advantages: The system has good thermal insulation. As long as there is hot water in the water tank, the phenomenon of heat and coldness will not occur; if the service life is long, the use of reasonable life can be as long as 15 years.

Disadvantages: The requirements for the installation location are very strict. If the installation is improper, there will be hidden safety hazards.Hours of hot water supply, poor comfort.

Thermal insulation water tank price

Generally, the price of heating water tanks from 0.5T-10T is more than 1,000 yuan-9,000 yuan. The larger the volume, the larger the capacity, the more expensive the price, and the price is different from the thickness of the insulation layer, the material of the inner and outer Skin, and the price is also different.

Self -made insulation water tank

What materials need

Stainless steel insulation water tank insulation material: Core layer medium can use polyurethane foam, polystyrene, polybionenitine, rock wool, PEF.The inner layer can be used for food -grade stainless steel plates, galvanized plates, aluminum plates or color steel plates.The outer layer can be made of stainless steel plates, galvanized plates, aluminum plates or color steel plates with general materials.

Making method steps

1,After selecting high -quality board, take the selected plate for precise cutting;

2,After the plate cutting is completed, the corner suppression is performed;

3,Modules with tailoring, corners, and molding molding are transported to the construction site for on -site stitching and production;

4,Whether the size and basic size of the water tank on the spot are consistent;

5.Start welding groove steel charities;

6.The bottom welding is completed and the floor is tied.

7.The assembly side plate is fixed in the welding method.One wall plate of the stitching side should be arranged in a flat on the edge of the bottom plate;

8.The stitching side second plate should be superimposed on the basis of the one -board side of the side. The position requirements of the ten seams of the wall plate, the level, flat;

9.Welding, the welding seam is required to be full and Smooth, and the oxidation of welding welding can not occur;

10.Test the leakage experiments using the internal inspection method outside to ensure the next step after the leakless leakage; add the internal pull -up support (the industry is collectively referred to as the tension). According to the calculation of the tensile forceItems

11.The cover plate is required to strengthen the welding reinforcement firmly;

12.Position in and out of the water outlet (the size of the pipe and place according to the requirements);

13.The fixed external insulation layer is made of stainless steel in 201, and the external insulation layer uses flame retardant polyurethane foam insulation layers. Welding fixing parts on the outer wall of the water tank, and then welding the insulation board.

14.In order to be beautiful, use the L -shaped corner edge and external welding joints to spray paint;

15.A brand new water tank has been completed.

1. Where to buy barbecue charcoal is reliable

Many friends like to make barbecue when they go out. This requires barbecue charcoal. Now barbecue carbon is generally mechanical charcoal. So where can I buy barbecue charcoal?

To buy barbecue charcoal, it is generally recommended to buy a large number of farmers wholesale markets, or whether to see if there is a larger shopping mall and supermarket; if you can't buy offline channels, you can consider online purchase. Now online shopping is very developed.The business platform can find the right barbecue charcoal.

2. What should I pay attention to when buying barbecue carbon

With the expansion of the demand for barbecue charcoal, the barbecue charcoal industry has also developed rapidly. There are many three -free products in the market where fish and dragons are mixed. When buying barbecue carbon, pay attention to the following points:

1. Try to choose regular sales channels to buy and save the purchase voucher.

2. In addition to considering cost -effectiveness, you must also pay attention to the average price of similar products. Do not buy barbecue carbon with a significantly lower price.

3. In terms of the choice of barbecue carbon varieties, the mainstream is generally mechanical charcoal, and there are also some fruit charcoal. Considering environmental protection factors and use convenience, it is recommended that you choose the mechanism of charcoal.

4. The specifications of barbecue charcoal must consider actual needs. Large barbecue charcoal is difficult to ignite, but it continues to burn for a long time. Smaller lit is easier, but the combustion time is short, which is mainly selected according to the needs.

5. When buying barbecue charcoal, try to choose products with low water content (feel dry).

3. How to distinguish whether barbecue charcoal contains coal

The coal heat is high and the cost is low. The charcoal made of coal or coal saving both costs cost and increases sales points, but it will cause harm to the human body. When buying, pay attention to avoid buying such products.Judgment:

1. Burning time

Ordinary fruit charcoal can be burned in about an hour and a half, and the normal mechanism charcoal and charcoal are generally about three hours. Propaganda can burn for more than 5 hours.

2. Surface value

Most of the coal of charcoal and charcoal that are obviously rough on the surface are coal. Because of the cost, most of the manufacturers of coal mixing will not grind coal in particular.

3. Taste

The smell of barbecue grilled from coal -containing barbecue carbon is different from the grilling of normal barbecue charcoal. The inferior coal can be directly smelled from the ingredients. It is slightly bitter, and the grilled foods are particularly obvious.

I hope that while buying barbecue charcoal to enjoy the deliciousness, friends also brighten their eyes to avoid buying inferior and harmful charcoal.