CN217112388U

CN217112388U - Non-contact ammonia nitrogen detects automatic reagent feeding system

Info

Publication number: CN217112388U
Application number: CN202220503017.9U
Authority: CN
Inventors: 宗兵年; 曹元乐; 陈瀚驰; 钱峰
Original assignee: Shanghai Tongrui Environmental Protection Engineering Co ltd
Current assignee: Shanghai Tongrui Environmental Protection Engineering Co ltd
Priority date: 2022-03-10
Filing date: 2022-03-10
Publication date: 2022-08-02
Anticipated expiration: 2032-03-10

Abstract

The utility model discloses a non-contact ammonia nitrogen detects automatic reagent feeding system, including the test tube, through the sampling pump with the cultivation bucket that the test tube is connected, through adding the alkali pump with the alkali bucket that the test tube is connected, through the air pump with the ammonia gas detection appearance that the test tube is connected, through the flowing back pump with the flowing back pipeline that the test tube is connected, it still is connected with the explosive barrel through adding the explosive pump to cultivate the bucket. The utility model discloses can satisfy the accurate detection of ammonia nitrogen, overcome the problem that the microorganism attaches membrane and aquatic impurity to disturb to the realization is with the change automatic reagent feeding's of ammonia nitrogen effect in the water, detects the time spent short, and is efficient, and the waste liquid can discharge through simple acid-base neutralization treatment, and is nonhazardous effect, green to the water.

Description

Non-contact ammonia nitrogen detects automatic reagent feeding system

Technical Field

The utility model relates to a non-contact ammonia nitrogen detects automatic reagent feeding system.

Background

The existing methods for measuring ammonia nitrogen comprise a naesner colorimetric method, a phenol-hypochlorite (or salicylic acid-hypochlorite) colorimetric method, an electrode method, an indophenol blue colorimetric method, a distillation-titration method and a gas phase molecular absorption spectrometry method. The NaSCL method is a classical determination method of ammonia nitrogen, is most widely applied, is suitable for processing water samples in large batches, has a wide water sample concentration range, and is classified as a standard analysis method by many countries; however, the preparation of the nano reagent has more influence factors, the measurement of metal ions such as calcium, magnesium and iron, sulfides, aldehydes and ketones, color, turbidity and the like in water is interfered, the influence on an experimental result is large, distillation and absorption are needed, and the mercury-containing waste liquid after analysis needs to be treated in the using process. The phenol-hypochlorite (or salicylic acid-hypochlorite) colorimetric method has the advantages of sensitivity, stability and the like, but the interference condition is the same as that of the Nashi reagent colorimetric method, and the salicylic acid is unstable and can only detect cleaner water. The distillation-acid titration method is suitable for detection when the content of ammonia nitrogen is high, and the distillation needs a certain time, the detection time is long, and the method is not suitable for batch processing. The ammonia gas sensitive electrode method is characterized in that ammonia in water is expelled in an ammonia gas form by alkali, the ammonia gas penetrates through a hydrophobic membrane of the ammonia gas sensitive electrode to cause the pH value of internal filling liquid to change, and the ammonia nitrogen in sewage is measured through the change of the electrode potential. The gas phase molecular absorption spectrometry can be used for measuring samples with higher concentration, the pretreatment is the same as other methods, but the gas phase molecular absorption spectrometry is expensive, and the large-area popularization has certain difficulty. In recent years, the environmental protection department has issued a recommended standard for ammonia nitrogen determination, namely 'determination flow injection of water ammonia nitrogen-salicylic acid spectrophotometry', and the method is based on the salicylic acid spectrophotometry, and partial instruments are provided with online distillation equipment, so that the complex step of manual distillation is omitted, the selectivity is good, the sensitivity is high, but the cost is relatively high, the sample processing time is long, the requirements for instrument cleaning and reagent preparation are high, and a certain time is still required for large-scale popularization. Based on the diversity of the water sample types, higher requirements are provided for the selection of the ammonia nitrogen analysis method.

SUMMERY OF THE UTILITY MODEL

The to-be-solved technical problem of the utility model is to provide a non-contact ammonia nitrogen detects automatic reagent feeding system, the tradition that aims at solving and exists among the prior art detects and easily receives quality of water muddy interference, calcium magnesium ion influence, and the survey time is long, needs the contact water to form the microorganism and attaches the membrane, and the discharge waste liquid needs secondary treatment, technical problem such as environmental protection inadequately.

The technical scheme of the utility model is that: the utility model provides a non-contact ammonia nitrogen detects automatic reagent feeding system, including the test tube, through the sampling pump with the cultivation bucket that the test tube is connected, through add the alkali pump with the alkali bucket that the test tube is connected, through the air pump with the ammonia detector that the test tube is connected, through the flowing back pump with the flowing back pipeline that the test tube is connected, it still is connected with the explosive barrel through adding the explosive pump to cultivate the bucket.

Further, in the utility model discloses in the system still includes intelligent circuit breaker, sample pump, add alkaline pump, air pump, dosing pump, flowing back pump all with intelligent circuit breaker connects.

Furthermore, the utility model discloses in be equipped with the inlet port on the test tube.

Further, the utility model discloses in the test tube is connected with pH detection device.

Further, the utility model discloses in the test tube still is connected with belt cleaning device.

Further, in the utility model discloses in belt cleaning device is including the washing pipeline of being connected with the upper and lower end of detecting tube respectively.

Compared with the prior art, the utility model has the following advantage:

1) the utility model discloses an add alkali after the sample for the ammonia loses from the water, and the ammonia reaches the peak value and maintains for the final conversion numerical value of ammonia nitrogen in the certain time with fixed gas flow through the ammonia detector, can control the automation according to the numerical value that detects and add the medicine.

2) Besides the accuracy of the measurement by the NaSCH method and the phenol-hypochlorite (or salicylic acid-hypochlorite) colorimetric method, the system also overcomes the defects of the methods, such as the problems of interference of turbid water, influence of calcium and magnesium ions and the like.

3) The system can shorten the test time, shorten the time and improve the efficiency.

4) The utility model discloses have good equipment performance, when carrying out water sample detection, contrast ammonia nitrogen sensor on the market need not contact the water, does not worry the microorganism and attaches the problem of membrane.

5) The utility model discloses detect the waste liquid after accomplishing and can discharge through simple acid-base neutralization treatment, to the nonhazardous effect of water, green.

Drawings

Fig. 1 is a schematic structural view of the present invention;

figure 2 is the fitting curve chart of the ammonia gas concentration-ammonia nitrogen concentration of the utility model.

Wherein: 1. an intelligent circuit breaker; 2. an air pump; 3. adding an alkali pump; 4. a sampling pump; 5. a culture bucket; 6. an alkali barrel; 7. a medicine barrel; 8. a detection tube; 9. a dosing pump; 10. a liquid discharge pump; 11. an ammonia gas detector; 12. and (4) air inlet holes.

Detailed Description

The following description will specifically explain embodiments of the present invention with reference to the accompanying drawings.

Example (b):

combine the figure to show the utility model relates to a non-contact ammonia nitrogen detects automatic reagent feeding system's embodiment, it mainly includes detection tube 8, through the cultivation bucket 5 that sampling pump 4 is connected with detection tube 8, through adding alkali bucket 6 that alkali pump 3 is connected with detection tube 8, through the ammonia gas detection appearance 11 that air pump 2 is connected with detection tube 8, through the flowing back pipeline that flowing back pump 10 is connected with detection tube 8. The culture barrel 5 is connected with a medicine barrel 7 through a medicine feeding pump 9, and an air inlet hole 12 is arranged on the detection tube 8.

The system also comprises an intelligent circuit breaker 1, and a sampling pump 4, an alkali adding pump 3, an air pump 2, a medicine adding pump 9 and a liquid discharging pump 10 are all connected with the intelligent circuit breaker 1.

In this embodiment, not shown in the drawing, the detecting tube 8 still is connected with pH detection device and belt cleaning device, and pH detection device is used for detecting the pH value of the water sample that awaits measuring in the detecting tube 8, and belt cleaning device washs the detecting tube 8 in letting in water through washing pipeline in the detecting tube 8 including the washing pipeline of being connected with detecting tube 8 about respectively to guarantee to detect the precision.

In the specific working process of this embodiment, the sampling pump 4 is started to extract a water sample from the culture barrel 5 into the detection tube 8, the alkali adding pump 3 is started to extract a certain amount of sodium hydroxide solution with a certain concentration from the alkali barrel 6 into the detection tube 8, the pH detection device is used for detection, when the pH of the water sample to be detected in the detection tube 8 reaches a certain value, if the pH is not less than 11, the pH stops, ammonium ions in the water body are slowly converted into ammonia gas, the air pump 2 is started, the ammonia gas passes through the ammonia gas detector 11 at a fixed gas flow rate of 5L/min, and the ammonia gas reaches a peak value within a certain time to be an ammonia nitrogen final conversion value and is maintained, as shown in fig. 2, the correlation between the ammonia gas concentration and the ammonia nitrogen concentration is strong, the ammonia nitrogen final conversion value is obtained according to the reading of the ammonia gas detector 11, and the chemical adding pump 9 is used for automatically controlling chemical adding. After detection is finished, the liquid discharge pump 10 is started to discharge waste liquid, and the waste liquid can be discharged through simple acid-base neutralization treatment, so that the method has no toxic or side effect on water and is green and environment-friendly. In addition, can also let in water through the washing pipeline and wash in the test tube 8 to guarantee to detect the precision.

The above-mentioned embodiments are only for illustrating the technical concept and features of the present invention, and the purpose thereof is to enable those skilled in the art to understand the contents of the present invention and to implement the present invention, which should not be construed as limiting the scope of the present invention. All modifications made according to the spirit of the main technical scheme of the present invention shall be covered within the protection scope of the present invention.

Claims

1. The utility model provides a non-contact ammonia nitrogen detects automatic reagent feeding system which characterized in that: including test tube (8), through sampling pump (4) with cultivate bucket (5) that test tube (8) are connected, through add alkaline pump (3) with alkali bucket (6) that test tube (8) are connected, through air pump (2) with ammonia gas detector (11) that test tube (8) are connected, through flowing back pump (10) with the drain pipe way that test tube (8) are connected, cultivate bucket (5) and still be connected with explosive barrel (7) through adding medicine pump (9).

2. The non-contact ammonia nitrogen detection automatic dosing system according to claim 1, characterized in that: the system further comprises an intelligent circuit breaker (1), and the sampling pump (4), the alkali adding pump (3), the air pump (2), the medicine adding pump (9) and the liquid discharging pump (10) are all connected with the intelligent circuit breaker (1).

3. The non-contact ammonia nitrogen detection automatic dosing system according to claim 1, characterized in that: an air inlet hole (12) is arranged on the detection pipe (8).

4. The non-contact ammonia nitrogen detection automatic dosing system according to claim 1, characterized in that: the detection tube (8) is connected with a pH detection device.

5. The non-contact ammonia nitrogen detection automatic dosing system according to claim 1, characterized in that: the detection tube (8) is also connected with a cleaning device.

6. The non-contact ammonia nitrogen detection automatic dosing system according to claim 5, characterized in that: the cleaning device comprises cleaning pipelines respectively connected with the upper end and the lower end of the detection pipe (8).