-
Spraying sodium hydroxide can be quickly adjusted, the cost is not very expensive, you can take the average pH value of the site to prepare the sodium hydroxide dosage concentration, quickly, without any reflection process neutral and harmless. It is best to buy powders for easy blending. You can go to the chemical store and ask for the price.
-
Is the main purpose to reduce the damage caused by rainwater erosion to downstream water sources? If it is neutralized with alkaline cheap substances, of course, it is lime, and the gypsum effect will be better. It is best to use red mud, waste utilization, and poison to fight poison.
I'm simplifying that, and the reality is more complicated. The construction of mud dams, combined with soil improvement and vegetation restoration, is best in the long run.
-
It is estimated that the slag accumulation of pyrite, similar to the situation of the Baoshan mine in northern Guangdong, has caused great harm to the surrounding water sources, thus causing great damage to human health and the ecological environment. Drying lime may be an easy method, but it can only temporarily neutralize the pH, it is not so easy to eliminate sulfur in the soil and heavy metal pollutants in the soil, and the application of silicon fertilizer in the polluted soil with certain tillage management can effectively prevent harmful substances from entering the edible parts of the crop. For details, you can consult Dr. Chen Nengchang from the Guangdong Institute of Ecology, Environment and Soil.
-
Spray a strong alkaline solution, lime water is sufficient.
-
Spray alkaline substances (pH 14 or so) to solve and improve acidity!
-
Sprinkle lime directly, economical.
-
1. Sustained release method:
The method of pH regulation by adding substances that can slowly release acids and alkalis to the water is called the sustained-release method.
The sustained-release method is the most widely used, and the often used sustained-release substances include: coral sand, volcanic stone, olive leaves, sunken wood, black water, etc. The extended-release method is very effective for slightly alkaline or acid-dropped water and can be used alone; The effect of hard alkali water is poor, and it should be used in conjunction with other methods.
2. Water softening method:
The method of replacing the water in the fish tank several times with softened water is called the softening method. The water softening method is used in a narrow area and is generally only used for hard alkaline water with a high pH value. After a period of replacement, the hardness of the fish tank water will decrease, the buffering capacity will be reduced, and there will be a natural acid drop, which is what we very much want to see.
3. Biological law:
The method of regulating pH by regulating the amount of biodegradable acid by regulating the amount of various organisms is called the biological method. The process by which organic matter is broken down step by step is called degradation, and the final products of biodegradation in the fish tank are mineral salts, water, and carbon dioxide, because of the presence of carbon dioxide and minerals, the water becomes acidic.
Common methods used in biological methods include increasing or decreasing the number of fish, the amount of feeding, the number of filter media, and cleaning or replacing new filter media. Through these means, the number of nitrifying bacteria is increased or decreased, and the acid production is regulated.
PH units.
Since when we calculate the pH value, the hydrogen ion concentration is only substituted into the numerical value, not into the unit, so the pH is dimensionless and has no unit of measurement.
It should be noted here that not every quantity has a unit of measurement, such as pH, POH, chemical equilibrium constant, ionization equilibrium constant, etc., there is no unit of measurement.
In econometrics, there is a convention: if a quantity is defined with super-function operations such as exponential, logarithmic, trigonometric functions, etc., it is usually calculated with only numeric values and no units.
-
It's really not easy, and it's finally over!
-
Summary. Hello, I'm glad to answer for you, one, add quicklime. When the water is too acidic, using quicklime to raise the pH is the most common method.
Generally, add 1 to 2 milligrams per liter of water, and sprinkle the quicklime water evenly. If there is less water for fish farming, measure while adding lime water to avoid adding too much and causing dead fish.
Second, the bottom of the pool, the bottom of the tank into small stones, etc. Stones can isolate minerals in water for a long time, increase the pH value in the water, and be stable for a long time. However, this method can only be effective when used for a long time, and it is difficult to quickly change the pH value in the short term.
3. Add baking soda and baking soda. Both of these substances are weakly alkaline, and compared to lime water, it can avoid drastic changes in the pH value of water.
How is the pH level in water adjusted?
Hello, I have seen your question and am sorting out the answer, please wait a while
Hello, I'm glad to answer for you, one, add quicklime. When the water is too acidic, using quicklime to raise the pH is the most common method. Generally, add 1 to 2 milligrams per liter of water, and sprinkle the quicklime water evenly.
If there is less water for fish farming, measure while adding lime water to avoid adding too much and causing dead fish. Second, the bottom of the pool, the bottom of the tank into small stones, etc. Stones can isolate minerals in water for a long time, increase the pH value in the water, and be stable for a long time.
However, this method can only be effective when used for a long time, and it is difficult to quickly change the pH value in the short term. 3. Add baking soda and baking soda. Both of these substances are weakly alkaline, and compared to lime water, it can avoid drastic changes in the pH value of water.
-
Add an acidic solution or an alkaline solution to adjust the pH value of the solution.
pH value: that is, the concentration index of hydrogen ions, which refers to the ratio of the total number of hydrogen ions in the solution to the amount of total substances.
Determination method: 1. Use pH indicator. Add a pH indicator to the solution to be measured, different indicators will change color according to different pH values, and the pH range can be determined according to the study of the indicator. During titration, it can be used as an accurate pH standard;
2. Use pH test strips. pH test paper has a wide range of test strips and precision test strips, dip a glass rod into the test strip with a little solution to be measured, according to the color change of the test strip against the standard colorimetric card can get the solution of the test strip can not show the pH value of the oil;
3. Use a pH meter. A pH meter is an instrument for measuring the pH value of a solution, and the pH selector electrode can be used to determine the solution to two decimal places.
H ion Volume: Solution Volume v= Hydrogen Ion Concentration:. So the pH is 3-4lg2. >>>More
There are many substances in the blood that buffer the pH - buffer substances, and each pair of buffer substances is composed of a weak acid and a corresponding strong alkali salt. Such as: H2CO3 NAHCo3. >>>More
Analysis: This question examines the conservation of electric charge. >>>More
The relationship between acidity and pH is as follows:
1.The higher the value of acidity, the more acidic the solution is, which is in line with the language conventions defined by physics. >>>More
How to use an acidity meter (pH meter).