Is there any relationship between total nitrogen in water and ammonia nitrogen?

According to this formula, ammonia nitrogen is a little brother of total nitrogen, why is it higher than the total nitrogen value? But sometimes the truth is so helpless, so let's analyze, why is the ammonia nitrogen value higher than the total nitrogen value?

In fact, there are only two reasons why ammonia nitrogen value and total nitrogen value can occur

The ammonia nitrogen determination is too large;

The total nitrogen measurement is on the low side.

Therefore, if you want to solve the problem, you must start with the detection methods of both. For most of us, measuring ammonia nitrogen is usually measured using "Nessler's reagent spectrophotometry" (with hash agents can not look at us, we are poor. This method is simple, stable, and not prone to problems.

Then this road is not passable, there is only another way, ammonia nitrogen is no problem, it must be a problem with total nitrogen, we generally use "alkaline potassium persulfate ultraviolet spectrophotometry" when measuring total nitrogen (in the same way, you can also ignore it with hash.) You are local tyrants), in short, the specific detection steps are divided into 2 steps:

First, potassium persulfate was used to digest the water sample, and the nitrogen in the water sample was converted into nitrate, which was convenient for subsequent determination.

The absorbance value was detected with a UV spectrophotometer, and then the total nitrogen content was checked against the standard curve.

Then there must be people who eat melons and ask, this time it is much easier to put the elephant in the refrigerator, it still needs three steps, you are only two steps, why did it go wrong? In fact, there are a number of small cloths in these two big steps, all of which may have problems, making your efforts in vain.

Factor 1: Purification of potassium persulfate.

Because the total nitrogen content is finally determined according to the absorbance, and the purity of potassium persulfate has a great influence on the absorbance, according to scientific experiments, the absorbance of the potassium persulfate solution without purification is much greater than the purified potassium persulfate solution, so the potassium persulfate must be purified, if the purity is insufficient, the natural final data will not be accurate.

Factor 2: Incomplete decomposition of potassium persulfate.

When it comes to potassium persulfate, it is more than a headache, because even if it is purified, the concentration of potassium persulfate solution will have a great impact on the absorbance.

The higher the concentration of the basic potassium persulfate solution, the higher the absorbance. Therefore, if the decomposition of potassium persulfate is incomplete when digesting water samples, it will also cause experimental errors.

Factor 3: Blank value of potassium persulfate.

Think about it, if you don't even have a good baseline, how do you get the final accurate value? Therefore, for spectrophotometry, the selection of the general blank value is very important, although the total nitrogen content of pure potassium persulfate is not exceeded at the highest level, but due to the difference in the quality of the reagent, the nitrogen content of some manufacturers and batches of reagents often does not meet this requirement, resulting in a high blank value.

Therefore, it is recommended that you use high-grade pure reagents if you have the conditions, and try to reduce the nitrogen content in the reagents, so as to reduce the blank value of the experiment.

For this problem, I can summarize this, if you have any better insights, you may wish to leave a message in the message area below, we will communicate and interact together, see this worrying ammonia nitrogen total nitrogen problem, and what is a better solution.

Total nitrogen in water. It refers to the sum of organic and inorganic nitrogen in water. And ammonia nitrogen.

The nitrogen in is in the form of organic compounds, so ammonia nitrogen belongs to organic nitrogen. Therefore, the total nitrogen in the water includes the ammonia nitrogen in the water. The total nitrogen content in the same water sample is greater than or equal to the ammonia nitrogen content.

The definitions of total nitrogen and ammonia nitrogen can be found in it, and the landlord should not ask for the definition of the two words separately.

In general, ammonia nitrogen is generally referred to in the national emission standards.

Total nitrogen, which is also sometimes mentioned in the Integrated Wastewater Discharge Standard.

In practical application, ammonia nitrogen is a specific treatment index; However, the total nitrogen in the wastewater is the key to the treatment, for example, in the coal chemical urea industry, the concentration of ammonia nitrogen in the inlet water of the sewage station is often high, but the total nitrogen is high, because the urea is organic nitrogen, and after entering the sewage station, it is gradually hydrolyzed and becomes ammonia nitrogen, but it cannot be measured when measuring ammonia nitrogen, resulting in troublesome follow-up treatment.

For this reason, the measurement of total nitrogen in wastewater is of great guiding significance for sewage treatment stations.

Ammonia nitrogen is very simple, anaerobic and aerobic are gradually digested.

Agree with Li Fantasy's answer.

To add another one, the main index of general domestic sewage is ammonia nitrogen.

Hello landlord: There are four types of total nitrogen: organic nitrogen, ammonia nitrogen (ammonium ion), nitrate nitrogen, and nitrous nitrogen.

2. Ammonia nitrogen: raw water is already there, but it is decomposed by organic nitrogen.

3. Nitrate nitrogen: the production process itself produces, such as pigment intermediates, and the production of dye intermediates will produce a large amount of nitrate nitrogen.

Xinerte Biotech provides you with:

Ammonia nitrogen is in the form of ammonia gas or ammonium ions.

Form of presence of the form of nitrogen. In addition to ammonia nitrogen, total nitrogen includes organic nitrogen, nitrate nitrogen such as amides, nitrates and nitrites.

and other forms of nitrogen.

The relationship between ammonia nitrogen and total nitrogen is that ammonia nitrogen is one of the modular components of total nitrogen.

The definition of total nitrogen denier is a combination of nitrate, nitrite, ammonia nitrogen and organic nitrogen, and the total nitrogen content in the water body is one of the important indicators to measure water quality.

Uses of Total Nitrogen:

Total nitrogen is one of the important indicators to measure water quality, often used to indicate the degree of nutrient pollution of the water body, its determination helps to evaluate the water pollution and self-purification status, the total nitrogen ** monitoring equipment has a digital communication interface, through the digital communication interface output instructions, related data and operation logs.

The total nitrogen ** monitoring equipment mainly includes alkaline potassium persulfate ultraviolet spectrophotometry for detection, and the instrument shows the final test results, which has a certain accuracy in detecting ammonia nitrogen content. The alkaline potassium persulfate ultraviolet spectrophotometry is widely used in the field of environmental surface water and water quality detection.

Total nitrogen is defined as the total amount of inorganic and organic nitrogen in various forms in water, and the instrument is simple and convenient to use. <>

Summary. Hello, in response to your question. Is there a relationship between the amount of ammonia nitrogen and the water temperature?

This is related, in fact, the temperature requirements of bacteria are lower than that of humans, even so it does not mean that it can adapt to the problem of particularly low, it also has limitations, autotrophic nitrifying bacteria are more obvious, and the low temperature in industrial wastewater is relatively rare, because the temperature of industrial wastewater will not fluctuate greatly because of the change of ambient temperature, but the water temperature of domestic wastewater is basically controlled by the ambient temperature, and the temperature of the inlet water in winter will obviously be very low, especially the large temperature difference between day and night. But the temperature below what is needed for bacterial metabolism makes the bacteria dormant and the nitrification system is abnormal! This will lead to an increase in ammonia nitrogen and exceed the standard!

In fact, this situation occurs more in the north, some sewage treatment plants in the north that are not warm or not heated, because the low water temperature is lower than the suitable temperature of nitrifying bacteria, and MLSS does not increase for the slow metabolism in winter, resulting in a decrease in ammonia nitrogen removal rate. Hope mine can help you.

Is there a relationship between the amount of ammonia nitrogen and the water temperature?

Hello, don't worry, I can ask for your question, but wait a minute, I need text for about 2 minutes.

Hello, in response to your question. Is there a relationship between the amount of ammonia nitrogen and the water temperature? This is related, in fact, the temperature requirements of bacteria are lower than that of humans, even so it does not mean that it can adapt to the problem of particularly low, it also has limitations, autotrophic nitrifying bacteria are more obvious, and the low temperature in industrial wastewater is relatively rare, because the temperature of industrial wastewater will not fluctuate greatly because of the change of ambient temperature, but the water temperature of domestic wastewater is basically controlled by the ambient temperature, and the temperature of the inlet water in winter will obviously be very low, especially the large temperature difference between day and night. But the temperature below what is needed for bacterial metabolism makes the bacteria dormant and the nitrification system is abnormal!

This will lead to an increase in ammonia nitrogen and exceed the standard! In fact, this situation occurs more in the north, some sewage treatment plants in the north that are not warm or not heated, because the low water temperature is lower than the suitable temperature of nitrifying bacteria, and the MLSS is not increased for the slow metabolism in winter, and the ammonia nitrogen removal rate is reduced. Hope mine can help you.

Summary. Hello dear, analysis of the reasons why ammonia nitrogen in sewage is higher than total nitrogen.

The initial contamination of nitrogen-containing organic matter in domestic sewage is the main content of ammonia nitrogen in water. The ammonia nitrogen factor in these sewage creates conditions for the growth and reproduction of microorganisms, and it is easy to form eutrophication on the basis of the rapid growth of plankton. In addition, under the action of microorganisms, the ammonia nitrogen in the sewage will further decompose and eventually form nitrate nitrogen; In this reaction, once the reaction process is insufficient, it will cause the production of a large amount of nitrite nitrogen, which will form the carcinogen nitrosamine when it binds to proteins.

Excuse me, why is the ammonia nitrogen measured in domestic sewage higher than the total nitrogen?

Hello, the ammonia nitrogen in the sewage is higher than the total nitrogen, the reason for the analysis of the initial pollution of nitrogen-containing organic matter in domestic sewage is the main cause of the ammonia nitrogen content in the water. The ammonia nitrogen factor in these sewage creates conditions for the growth and reproduction of microorganisms, and it is easy to form eutrophication on the basis of the rapid growth of plankton. In addition, under the action of microorganisms, the ammonia nitrogen in the sewage will further decompose and eventually form nitrate nitrogen; In this reaction, once the reaction process is not sufficiently suppressed, it will cause the production of a large amount of nitrite nitrogen, and when it is combined with the residual and protein, it will form the carcinogen nitrosamine.

If my answer is helpful to you, please give a thumbs up (comment in the lower left corner), look forward to your like, your work is very important to me, and your support is also the driving force for my progress. If you feel that my answer is still satisfactory, you can click on my avatar to have a one-on-one consultation. Finally, I wish you good health and a good mood! .

Ammonia nitrogen is one of the components of total nitrogen.

Total nitrogen is the total amount of inorganic and organic nitrogen in various forms in water; It includes inorganic nitrogen such as nitrate NO3-, nitrous NO2- and ammonia nitrogen NH4+, and organic nitrogen such as proteins, amino acids, and organic amines. As for the proportion of ammonia nitrogen to total nitrogen, it is difficult to determine how much. Ammonia nitrogen refers to the nitrogen present in water in the form of free ammonia (NH3) and ammonium ions (NH4+).

The nitrogen content of animal organic matter is generally higher than that of plant organic matter. At the same time, the nitrogen-containing organic matter in human and animal manure is very unstable and easily decomposes into ammonia.

Structural characteristics of ammonia nitrogen resin T-42H:

It is composed of two parts: a skeleton and an active group. The skeleton, also known as the splendor matrix, is the structural body that forms the ion exchange resin. It is mainly composed of polymer organic compounds (polystyrene) with the linear structure of celery seeds, plus a certain amount of cross-linking agent, and forms a spatial network structure through horizontal key bridging.

The active group consists of an immobilized ion (-SO3-sulfonic acid group) and an active ion (H+). The immobilized ions are fixed on the resin framework, and the active ions (or exchange ions) are combined with the immobilized ions by electrostatic attraction. <>

There are four types of nitrogen in wastewater, namely organic nitrogen, ammonia nitrogen, nitrite nitrogen, and nitrate nitrogen. A large amount of domestic sewage, farmland drainage or nitrogen-containing industrial sewage is discharged into the water body, which increases the content of organic nitrogen and various inorganic nitrogen compounds in the water, and the mass reproduction of organisms and microorganisms consumes dissolved oxygen in the water and deteriorates the quality of the water body.

When lakes and reservoirs contain excessive nitrogen and phosphorus, phytoplankton will multiply vigorously and become eutrophicated. Therefore, total nitrogen is one of the important indicators to measure water quality.

1. Aerobic will ammonia nitrogen.

nitrification, so ammonia nitrogen will be reduced.

2. If it is a O or hungry lead and its first trimming process, there will be total nitrogen.

of reductions. 3. However, the removal of ammonia nitrogen is better than that of total nitrogen, so the total nitrogen of effluent water quality is much higher than that of ammonia nitrogen.

The ammonia nitrogen of untreated sewage is higher than that of total nitrogen.