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Method for detecting content of ammonia nitrogen in sewage

A technology for ammonia nitrogen content and detection methods, applied in chemical instruments and methods, measuring devices, electrochemical variables of materials, etc., can solve problems such as slow reaction speed, poor solubility of reagents, and long preparation time, so as to achieve sufficient mutual contact and ensure accuracy Sex, the effect of increasing the contact area

Pending Publication Date: 2022-03-29
南通化学环境监测站有限公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0005] The invention provides a method for detecting the content of ammonia nitrogen in sewage, one of which is to have the ability to reduce the vibration of the stirring device, and to solve the problem that the reagents are spilled due to vibration and the accuracy of the detection result is affected; the other purpose is to Solve the problem that some reagents have poor solubility or slow reaction speed, resulting in long preparation time, so as to improve the detection efficiency

Method used

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  • Method for detecting content of ammonia nitrogen in sewage
  • Method for detecting content of ammonia nitrogen in sewage
  • Method for detecting content of ammonia nitrogen in sewage

Examples

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Embodiment 1

[0035] like Figure 1-6 As shown, the invention provides a method for detecting ammonia nitrogen content in sewage, and the method for detecting ammonia nitrogen content in sewage comprises the following steps:

[0036] Step 1. Sewage sampling and preparation of various reagents, including the preparation of ammonium standard stock solution, the preparation of electrode filling solution and disodium ethylenediaminetetraacetic acid compounding agent, and then prepare ammonium standard use solutions of different concentrations through the ammonium standard stock solution;

[0037] Step 2. Preparation of instruments and devices, including the debugging of ammonia gas-sensitive compound electrode, ion meter and electromagnetic stirrer, and the preparation of other experimental equipment needed for the detection process;

[0038] Step 3, drawing a calibration curve, by measuring different concentrations of ammonium standard liquids respectively, recording the stable potential value...

Embodiment 2

[0041] like Figure 1-6As shown, on the basis of Example 1, the present invention proposes an electromagnetic stirrer, comprising an electromagnetic stirrer main body 1 and a stirring rod 2, the stirring rod 2 is arranged on the outer surface of the electromagnetic stirrer main body 1, and the The upper surface of the electromagnetic stirrer main body 1 is fixedly connected with a fixed sleeve 11, and the inside of the fixed sleeve 11 is provided with a stirring measuring cup 12, which is characterized in that: a shock absorber is arranged between the fixed sleeve 11 and the stirring measuring cup 12 Mechanism 3, the shock absorbing mechanism 3 includes a sliding ball 31, the outer surface of one side of the sliding ball 31 is fixedly connected with the inner wall of the fixed sleeve 11, and the inside of the fixed sleeve 11 is provided with an elastic connecting bent plate 33 And elastic cover plate 36, the outer surface of described stirring rod 2 is provided with auxiliary ...

Embodiment 3

[0044] Such as Figure 1-6 As shown, on the basis of Embodiment 1 and Embodiment 2, the present invention provides a technical solution: preferably, a horizontal support rod 361 and a vertical support rod 362 are movably connected to the inner wall of the elastic sleeve plate 36, so that One end of the horizontal support bar 361 and the vertical support bar 362 is movably connected with a broken line plate 363 , and an elastic cord 364 is fixedly connected with the inner side of the broken line plate 363 .

[0045] In this embodiment, when the elastic sleeve plate 36 is elastically deformed by the lateral extrusion force, the lateral support rod 361 cooperates with the vertical support rod 362 to push the broken line plate 363 to fold, and stretches the elastic rope 364 to cooperate with the deformation. The elastically deformed elastic cover plate 36 produces an elastic force opposite to the direction of the extrusion force, offsetting part of the extrusion force generated by...

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Abstract

The invention discloses a method for detecting the content of ammonia nitrogen in sewage, and relates to the technical field of component detection methods, the method for detecting the content of ammonia nitrogen in sewage comprises the following steps: step 1, sewage sampling and preparation of each reagent, step 2, preparation of instruments and devices, step 3, drawing of a calibration curve, and step 4, determination and analysis of a sewage sample. The first step further comprises the steps of preparing an ammonium standard stock solution, filling liquid in the electrode and preparing an ethylene diamine tetraacetic acid compounding agent. Through cooperation of the sliding ball, the soft supporting base and the elastic connecting bent plate, firstly, the soft supporting base provides vertical support for the stirring measuring cup, a part of vertical extrusion force generated by vibration is offset through the elastic supporting block in the soft supporting base, and then through the effect of the elastic connecting bent plate, the stirring measuring cup is prevented from being vibrated. Buffering and supporting are provided for the stirring measuring cup in the transverse direction, and the problem that reagents in the stirring measuring cup are scattered due to vibration is avoided.

Description

technical field [0001] The invention relates to a method for detecting ammonia nitrogen content, relates to the technical field of component detection methods, and in particular to a method for detecting ammonia nitrogen content in sewage. Background technique [0002] With the rapid development of the economy and the lag of environmental testing methods and protection measures, a large amount of industrial and domestic wastewater is directly discharged into rivers, lakes, and even the ocean. It contains a large amount of ammonia nitrogen compounds, which destroys the water environment, causes eutrophication of the water body, and directly threatens the safety of drinking water for residents. Therefore, ammonia nitrogen is one of the main indicators for water environment monitoring. In addition, in an oxygen-free environment, nitrite present in water can also be reduced to ammonia by microorganisms. In an aerobic environment, ammonia in water can also be converted into nit...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): G01N27/30G01N27/416G01N1/38F16F15/04F16F15/067B01F33/25B01F33/453B01F35/40B01F101/23
CPCG01N27/304G01N27/416G01N1/38F16F15/04F16F15/067
Inventor 宋明明
Owner 南通化学环境监测站有限公司