CN109632777A - A kind of method of ammonia-nitrogen content in detection waste water - Google Patents
A kind of method of ammonia-nitrogen content in detection waste water Download PDFInfo
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- CN109632777A CN109632777A CN201811575912.6A CN201811575912A CN109632777A CN 109632777 A CN109632777 A CN 109632777A CN 201811575912 A CN201811575912 A CN 201811575912A CN 109632777 A CN109632777 A CN 109632777A
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Abstract
The present invention relates to a kind of methods of ammonia-nitrogen content in detection waste water.The present invention passes through linear determination method, react the absorbance of the pale red complex compound generated with ammonia nitrogen in conjunction with nessler reagent to determine the ammonia-nitrogen content in industrial wastewater, and the interference of the metal ions such as copper in industrial wastewater, lead, calcium, magnesium and chlorine residue to test result is eliminated before testing, greatly improves the ammonia nitrogen detection accuracy of industrial wastewater.
Description
Technical field
The present invention relates to industrial wastewater environment protection treatment fields, and in particular to a method of ammonia-nitrogen content in detection waste water.
Background technique
Existing ammonia nitrogen in industrial waste water mainly exists in the form of an ion, and pale red complexing will be generated by reacting with nessler reagent
Object can be obtained the concentration of ammonia nitrogen by line line measuring method by the absorbance of the pale red complex compound.However, industrial wastewater
Not only have certain color in itself, and wherein contain the metal ions such as a large amount of copper, lead, calcium, magnesium and chlorine residue etc., to above-mentioned pale red
The absorbance detection of complex compound causes very big interference, and the detection accuracy for directly resulting in ammonia nitrogen concentration reduces.It would therefore be highly desirable to provide
A kind of detection method of exclusive PCR, the detection accuracy of Lai Tigao industrial wastewater ammonia-nitrogen content, provides more for subsequent environmental protection treatment
Accurate reference.
Summary of the invention
In order to solve the above-mentioned technical problem, it is as follows to provide technical solution by the present invention:
A kind of method of ammonia-nitrogen content in detection waste water comprising following steps:
Step a: the industrial wastewater of 200ml is taken.Only selected part industrial wastewater is detected, because can draw in subsequent step
Enter mercury element, prevents from detecting on a large scale and cause water pollution, environment and personnel are damaged.
Step b: the industrial wastewater in abovementioned steps is stood into a moment at normal temperatures and pressures, filtering removes its silt and not
Molten object.The effect of this step is to remove silt and insoluble matter.
Step c: clip 3mm fibre active carbon is filled to adsorption column, packing volume 50ml, will be handled by abovementioned steps
Industrial wastewater afterwards pours the adsorption column into.The effect of this step be to industrial wastewater carry out decolouring and deodorizing: decoloration be in order not to
The judgement generation interference for generating pale red complex compound is reacted subsequent ammonia nitrogen with nessler reagent;Deodorization is then in order to prevent to environment
It is damaged with personnel.
Step d: taking 30g green sand that adsorption column is added, will treated that industrial wastewater pours into the suction by abovementioned steps
Attached column.The effect of this step is to remove soluble ferric iron salt, manganese salt, dissolved organic matter, part radioactivity using green sand
The interference of element.
Step e: 5% sodium carbonate liquor tune PH=8~9 being added in by abovementioned steps treated industrial wastewater,
It is filtered after having the appearance of the alkaline sediment of copper and lead.The effect of this step is to remove the interference of the metal ions such as copper, lead.
Step f1: 1ml potassium sodium tartrate solution is added in by abovementioned steps treated industrial wastewater.This step
Effect is to remove the interference of the metal ions such as calcium, magnesium.
Step f2: 3ml hypo solution is added in by abovementioned steps treated industrial wastewater.This step
Effect is to remove the interference of chlorine residue.
Step g: it extracts 10ml and is added in 100ml volumetric flask by abovementioned steps treated industrial wastewater, 1-2ml is added
Nessler reagent solution;One group of blank group is added to be compareed.This step, which is reacted for ammonia nitrogen with nessler reagent, prepares.
Step h: 5-6min will be stood by abovementioned steps treated industrial wastewater.The effect of this step is Industry Waste
Ammonia nitrogen in water reacts with nessler reagent, generates pale red complex compound.Specific reaction equation is 2 (HgI4)2-+3OH-+NH3=
(Hg2O·NH2)I+2H2O+7I-。
Step i: by the blank group in step g and treated that industrial wastewater is separately added into the four of cuvette by step h
/ tri-, quarter spaces are reserved, lid is covered.This step is prepared for subsequent contrast.
The cuvette of step i: being placed in spectrophotometer by step j respectively, is linearly surveyed using linear determination method
Instrument method detects the ammonia-nitrogen content in its waste water.This step detects the ammonia-nitrogen content in its waste water: ammonia nitrogen using linear determination method
To nessler reagent react the pale red complex compound of generation absorbance and ammonia-nitrogen content it is directly proportional, ammonia nitrogen=AAbsorbance/
0.0036*VVolume, record its absorbance i.e. and may know that the ammonia-nitrogen content in industrial wastewater.
Above-mentioned steps f1 can be interchanged with step f2 sequence.
Preferably, nessler reagent solution active principle used in the step g is mercuric iodixde, potassium iodide and hydroxide
Sodium.So set, more stable nessler reagent solution can be provided.
Preferably, after adsorption column is added in fibre active carbon in the step c, the adsorption column still remaining space three/
One.So set, facilitating toppling over for subsequent step industrial wastewater.
Preferably, after adsorption column is added in green sand in the step d, the adsorption column still remaining space three/
One.So set, facilitating toppling over for subsequent step industrial wastewater.
Preferably, the step f2 further includes, after 3ml hypo solution is added, starch-kalium iodide is utilized
Test paper detects whether still there is chlorine residue.In this way, can determine whether hypo solution dosage meets the requirements, when still there is chlorine residue
It can continue to add hypo solution, it is ensured that chlorine residue is all removed.
Preferably, the used 721G spectrophotometer of step j carries out absorbance measurement, and 721G spectrophotometer
Using preceding 30 minutes warmed-up.It so chooses and is intended to improve working efficiency.
Compared with prior art, the beneficial effects of the present invention are: the present invention is by linear determination method, in conjunction with nessler reagent
The absorbance of the pale red complex compound generated is reacted with ammonia nitrogen to determine the ammonia-nitrogen content in industrial wastewater, and arranged before testing
In addition to the interference of the metal ions such as copper, lead, calcium, magnesium and chlorine residue to test result in industrial wastewater, Industry Waste is greatly improved
The ammonia nitrogen detection accuracy of water.
Specific embodiment
In order to further appreciate that feature of the invention, technological means and specific purposes achieved, function, below it is right
The present invention is described in further detail in specific embodiment.
In conjunction with preference, illustrate the course of work of the present invention:
Take the industrial wastewater of 200ml.Aforementioned industrial waste water is stood into a moment at normal temperatures and pressures, filtering removes its silt
And insoluble matter.Clip 3mm fibre active carbon is filled to adsorption column, packing volume 50mL, and the adsorption column still remaining space three divides
One of, facilitate toppling over for subsequent step industrial wastewater.It pours aforementioned industrial waste water into the adsorption column, carries out decolouring and deodorizing.Take 30g
Another adsorption column is added in green sand, and the adsorption column still remaining space one third facilitates toppling over for subsequent step industrial wastewater.
Aforementioned industrial waste water is poured into the adsorption column, removes soluble ferric iron salt, manganese salt, dissolved organic matter, part using green sand
The interference of radioactive element.
5% sodium carbonate liquor tune PH=8~9 are added into aforementioned industrial wastewater, have the alkaline sediment of copper and lead to go out
It is now filtered afterwards, goes the interference of the metal ions such as copper removal, lead.Reaction equation relevant to copper ion is 2Cu2++CO32-+2OH-→
Cu2(OH)2CO3↓, other metal ions such as lead are similarly.1ml potassium sodium tartrate solution, removal are added into aforementioned industrial wastewater
The interference of the metal ions such as calcium, magnesium.3ml hypo solution is added into aforementioned industrial wastewater, after the interference for removing chlorine residue,
Examine whether chlorine residue eliminates with starch-kalium iodide test paper.
It extracts 10ml to be added in 100ml volumetric flask by abovementioned steps treated industrial wastewater, the Na Shi of 1-2ml is added
Reagent (mercuric iodixde-potassium iodide-sodium hydroxide) solution, one group of blank group of addition are compareed.Industrial wastewater is stood into 5-6min.
Ammonia nitrogen in industrial wastewater reacts with nessler reagent, generates pale red complex compound.Specific reaction equation is 2 (HgI4)2-+3OH-
+NH3=(Hg2O·NH2)I+2H2O+7I-.Industrial wastewater after reacting by aforementioned blank group and with nessler reagent adds respectively
Enter 3/4ths of cuvette, reserve quarter spaces, covers lid.
Aforementioned cuvette is placed on respectively in warmed-up 30 minutes 721G spectrophotometers, using linear determination method into
Line surveys instrument method and detects the ammonia-nitrogen content in its waste water.This step is contained using the ammonia nitrogen that linear determination method detects in its waste water
Amount: ammonia nitrogen and nessler reagent react generation pale red complex compound absorbance and ammonia-nitrogen content it is directly proportional, ammonia nitrogen=
AAbsorbance/0.0036*VVolume, record its absorbance i.e. and may know that the ammonia-nitrogen content in industrial wastewater.
Compared with prior art, the beneficial effects of the present invention are: the present invention is by linear determination method, in conjunction with nessler reagent
The absorbance of the pale red complex compound generated is reacted with ammonia nitrogen to determine the ammonia-nitrogen content in industrial wastewater, and arranged before testing
In addition to the interference of the metal ions such as copper, lead, calcium, magnesium and chlorine residue to test result in industrial wastewater, Industry Waste is greatly improved
The ammonia nitrogen detection accuracy of water.
Claims (6)
1. a kind of method of ammonia-nitrogen content in detection waste water comprising following steps:
Step a: the industrial wastewater of 200ml is taken;
Step b: the industrial wastewater in abovementioned steps is stood into a moment at normal temperatures and pressures, filtering removes its silt and insoluble matter;
Step c: clip 3mm fibre active carbon is filled to adsorption column, packing volume 50mL, and passing through abovementioned steps, treated
Industrial wastewater pours the adsorption column into;
Step d: taking 30g green sand that adsorption column is added, will treated that industrial wastewater pours into the adsorption column by abovementioned steps;
Step e: 5% sodium carbonate liquor tune PH=8~9 are added in by abovementioned steps treated industrial wastewater, there is alkali
Formula copper carbonate and ceruse sediment are filtered after occurring;
Step f1: 1ml potassium sodium tartrate solution is added in by abovementioned steps treated industrial wastewater;
Step f2: 3ml hypo solution is added in by abovementioned steps treated industrial wastewater;
Step g: it extracts 10ml and is added in 100ml volumetric flask by abovementioned steps treated industrial wastewater, receiving for 1-2ml is added
Family name's reagent solution;One group of blank group is added to be compareed.
Step h: 5-6min will be stood by abovementioned steps treated industrial wastewater;
Step i: by step g blank group and by step h treated industrial wastewater is separately added into cuvette four/
Three, quarter spaces are reserved, lid is covered;
The cuvette of step i: being placed in spectrophotometer by step j respectively, carries out linear survey instrument method using linear determination method
Detect the ammonia-nitrogen content in its waste water;
Above-mentioned steps f1 can be interchanged with step f2 sequence.
2. the method for ammonia-nitrogen content in a kind of detection waste water as described in claim 1, it is characterised in that: make in the step g
Nessler reagent solution active principle is mercuric iodixde, potassium iodide and sodium hydroxide.
3. the method for ammonia-nitrogen content in a kind of detection waste water as described in claim 1, it is characterised in that: will in the step c
After adsorption column is added in fibre active carbon, the adsorption column still remaining space one third.
4. the method for ammonia-nitrogen content in a kind of detection waste water as described in claim 1, it is characterised in that: will in the step d
After adsorption column is added in green sand, the adsorption column still remaining space one third.
5. the method for ammonia-nitrogen content in a kind of detection waste water as described in claim 1, it is characterised in that: the step f2 is also wrapped
It includes, after 3ml hypo solution is added, detects whether still there is chlorine residue using starch-kalium iodide test paper.
6. the method for ammonia-nitrogen content in a kind of detection waste water as described in claim 1, it is characterised in that: the step j is made
Absorbance measurement is carried out with 721G spectrophotometer, and 721G spectrophotometer is preheated 30 minutes using preceding.
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CN114088694A (en) * | 2021-10-21 | 2022-02-25 | 包头钢铁(集团)有限责任公司 | Method for rapidly determining content of hydrogen sulfide in wastewater |
CN116879360A (en) * | 2023-06-27 | 2023-10-13 | 安徽环境科技集团股份有限公司 | Bioelectrochemistry in-situ monitoring method and device for groundwater pollution |
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Cited By (5)
Publication number | Priority date | Publication date | Assignee | Title |
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CN110057813A (en) * | 2019-04-25 | 2019-07-26 | 沈阳溢源生物科技有限公司 | The colour developing agent prescription and preparation method of instant capacity colorimetric method for determining available chlorine content |
CN111624062A (en) * | 2020-04-13 | 2020-09-04 | 南京曼蕊生物科技有限公司 | Chemical wastewater anti-interference detection pretreatment and COD detection kit |
CN114088694A (en) * | 2021-10-21 | 2022-02-25 | 包头钢铁(集团)有限责任公司 | Method for rapidly determining content of hydrogen sulfide in wastewater |
CN116879360A (en) * | 2023-06-27 | 2023-10-13 | 安徽环境科技集团股份有限公司 | Bioelectrochemistry in-situ monitoring method and device for groundwater pollution |
CN116879360B (en) * | 2023-06-27 | 2024-06-11 | 安徽环境科技集团股份有限公司 | Bioelectrochemistry in-situ monitoring method and device for groundwater pollution |
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Application publication date: 20190416 |