CN109886611A - A kind of method of ammonia nitrogen Ecology risk assessment - Google Patents
A kind of method of ammonia nitrogen Ecology risk assessment Download PDFInfo
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- CN109886611A CN109886611A CN201910303963.1A CN201910303963A CN109886611A CN 109886611 A CN109886611 A CN 109886611A CN 201910303963 A CN201910303963 A CN 201910303963A CN 109886611 A CN109886611 A CN 109886611A
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Abstract
The present invention provides a kind of methods of ammonia nitrogen Ecology risk assessment, belong to ammonia nitrogen Ecology risk assessment technical field, comprising the following steps: 1) temperature, pH value and the ammonia nitrogen exposure value of measurement observation point obtain observed temperature, actual measurement pH value and actual measurement ammonia nitrogen exposure value；2) the actual measurement pH value and actual measurement ammonia nitrogen exposure value are brought into biological exposure value E when Formulas I calculates the pH=7.0 after obtaining observation point standardizationt,7；3) E that will be obtained in observed temperature described in step 1) and step 2)t,7Be brought into formula shown in Formula II calculate obtain observation point standardization after 20 DEG C of temperature, ammonia nitrogen exposure equivalent E when pH=7.07,20；4) E is utilized7,20Ammonia nitrogen risk quotient is calculated with a reference value；The ammonia nitrogen risk quotient=E7,20/ a reference value.Method of the present invention is easy to operate, and workload is small.
Description
Technical field
The invention belongs to ammonia nitrogen Ecology risk assessment technical field more particularly to a kind of ammonia nitrogen Ecology risk assessment
Method.
Background technique
Ammonia nitrogen can occur to change accordingly to the toxicity of aquatile with the variation of the temperature and pH value of dampening, thus band
The variation of water ecological risk.Existing ammonia nitrogen Ecology risk assessment technology is raw for the ammonia nitrogen of some monitoring section of water environment
It is the national ammonia nitrogen water quality reference function formula issued using USEPA when state risk is assessed, specific as follows shown:
For the formula using water temperature and pH as independent variable (X value), benchmark is dependent variable (Y value), and wherein t is (TAN；total
ammonianitrogen)；Therefore, the water temperature of Input Monitor Connector section and pH condition can be obtained as independent variable suitable for the section
Specific a reference value, recycle the NH 3 concentration data of this numerical benchmark and section comparison carry out risk assessment, monitoring
Data are more than a reference value with regard to risky.
This method has significant limitation to ammonia nitrogen Ecology risk assessment, requires one to each monitoring section
Specific ammonia nitrogen numerical benchmark, then can just obtain value-at-risk, very cumbersome, workload is huge.
Summary of the invention
In view of this, the purpose of the present invention is to provide a kind of methods of the ammonia nitrogen Ecology risk assessment of simplicity.
In order to achieve the above-mentioned object of the invention, the present invention provides following technical schemes:
A kind of method of ammonia nitrogen Ecology risk assessment, comprising the following steps:
1) temperature, pH value and the ammonia nitrogen exposure value of measurement observation point obtain observed temperature, actual measurement pH value and actual measurement ammonia nitrogen
Exposure value；
2) the actual measurement pH value and actual measurement ammonia nitrogen exposure value are brought into Formulas I and calculates the pH=after obtaining observation point standardization
Biological exposure value E when 7.0t,7；
3) E that will be obtained in observed temperature described in step 1) and step 2)t,7The calculating of formula shown in Formula II is brought into obtain
20 DEG C of temperature must be observed after point standardization, ammonia nitrogen exposure equivalent E when pH=7.07,20；
4) E is utilized7,20Ammonia nitrogen risk quotient is calculated with a reference value；The ammonia nitrogen risk quotient=E7,20/ a reference value；
log(E7,20)=log (ET, 7)-[- 0.036 (t-20)] Formula II；
In Formulas I and Formula II, t is the observed temperature for observing point, and pH is the actual measurement pH value for observing point, and Et is observation point
Actual measurement ammonia nitrogen exposure value, Et,7Refer to the biological exposure value when pH=7.0 after observation point standardizes, E7,20Observation point
Ammonia nitrogen exposure equivalent 20 DEG C of temperature after the standardization of position, when pH=7.0；
As the ammonia nitrogen risk quotient < 1, for no risk；When 1≤ammonia nitrogen risk quotient the < 10, there is wind
Danger；It is high risk when the ammonia nitrogen risk quotient >=10.
The ammonia nitrogen exposure value of the observation point is secondary by Na's colorimetry, phenol-hypochlorite colorimetric method, salicylic acid-
Chlorate colorimetric method or determination of electrode obtain.
Preferably, a reference value described in step 4) includes acute a reference value and chronic a reference value；The acute a reference value is
17mg TAN/L, the chronic a reference value are 1.9mg TAN/L, and wherein TAN is the total ammonia nitrogen content in water.
Preferably, the temperature is measured using use for laboratory thermometer.
Preferably, the temperature measurement result by degree Celsius DEG C as unit of.
Preferably, the pH value is measured using use for laboratory pH meter.
The present invention also provides the methods of the ammonia nitrogen Ecology risk assessment in different observation point ammonia nitrogen Hazard ratios
Application in relatively.
Preferably, the ammonia nitrogen risk quotient of the different observation points, the big observation point wind of ammonia nitrogen risk quotient
The danger observation point small compared with ammonia nitrogen risk quotient.
Beneficial effects of the present invention: the method for ammonia nitrogen Ecology risk assessment provided by the invention, it will by Formulas I and Formula II
The actual measurement ammonia nitrogen exposure value of specific a certain observation point is standardized as 20 DEG C of temperature, ammonia nitrogen exposure equivalent when pH=7.0, can
To be compared with the ammonia nitrogen a reference value under standard conditions, ammonia nitrogen risk assessment is carried out, easy to operate, workload is small.
Further, the method for ammonia nitrogen Ecology risk assessment provided by the invention can be by (temperature under the conditions of varying environment
Degree and pH value) different observation points the standardization of actual measurement ammonia nitrogen exposure values after, be compared, under the conditions of solving varying environment
The technical problem that ammonia nitrogen Ecology risk between observation point can not compare.
Specific embodiment
The present invention provides a kind of methods of ammonia nitrogen Ecology risk assessment, comprising the following steps: 1) measurement observation point
Temperature, pH value and ammonia nitrogen exposure value obtain observed temperature, actual measurement pH value and actual measurement ammonia nitrogen exposure value；2) by the actual measurement pH value
Biological exposure value E when Formulas I calculates the pH=7.0 after obtaining observation point standardization is brought into actual measurement ammonia nitrogen exposure valuet,7；3)
The E that will be obtained in observed temperature described in step 1) and step 2)t,7It is brought into formula shown in Formula II and calculates acquisition observation point
20 DEG C of temperature after standardization, ammonia nitrogen exposure equivalent E when pH=7.07,20；4) E is utilized7,20Ammonia nitrogen wind is calculated with a reference value
Dangerous quotient；The ammonia nitrogen risk quotient=E7,20/ a reference value；
log(E7,20)=log (ET, 7)-[- 0.036 (t-20)] Formula II；
In Formulas I and Formula II, t is the observed temperature for observing point, and pH is the actual measurement pH value for observing point, and Et is observation point
Actual measurement ammonia nitrogen exposure value, Et,7Refer to the biological exposure value when pH=7.0 after observation point standardizes, E7,20Observation point
Ammonia nitrogen exposure equivalent 20 DEG C of temperature after the standardization of position, when pH=7.0.
In the present invention, temperature, pH value and the ammonia nitrogen exposure value of measurement observation point obtain observed temperature, actual measurement pH value and reality
Survey ammonia nitrogen exposure value.Some prison of the present invention to the no particular/special requirement of selection for observing point, preferably in water environment
Survey section；In the present invention, the temperature preferably use use for laboratory thermometer to be measured, measurement result with degree Celsius
(DEG C) is unit.Measurement；The pH value preferably uses use for laboratory pH meter to measure；The ammonia nitrogen exposure value is preferably used and is received
Family name's colorimetric method, phenol-hypochlorite colorimetric method, salicylic acid-hypochlorite colorimetric method or determination of electrode obtain, and the present invention is to upper
The specific steps and parameter for stating method are not particularly limited, using this field routine the above method the step of and parameter.
The present invention after obtaining the observed temperature, actual measurement pH value and actual measurement ammonia nitrogen exposure value, by the actual measurement pH value with
Actual measurement ammonia nitrogen exposure value brings biological exposure value E when Formulas I calculates the pH=7.0 after obtaining observation point standardization intot,7.This hair
It is bright there is no particular/special requirement to the specific calculation method and tool, using this field conventional Calculation Method and tool.
The present invention is obtaining the Et,7Afterwards, by the E of the observed temperature and acquisitiont,7It is brought into formula meter shown in Formula II
20 DEG C of temperature are calculated after obtaining observation point standardization, ammonia nitrogen exposure equivalent E when pH=7.07,20.The present invention is by varying environment item
The actual measurement ammonia nitrogen exposure value of a certain observation point is standardized as 20 DEG C of temperature under part, the ammonia nitrogen exposure equivalent E of pH=7.07,20, have
Conducive to subsequent calculating and compare.
The present invention is obtaining the ammonia nitrogen exposure equivalent E7,20Afterwards, the E is utilized7,20Ammonia nitrogen risk quotient is calculated with a reference value
Value；The ammonia nitrogen risk quotient=E7,20/ a reference value.In the present invention, a reference value includes acute a reference value and chronic base
Quasi- value；The acute a reference value is 17mg TAN/L, and the chronic a reference value is 1.9mg TAN/L, and wherein TAN is total in water
Ammonia-nitrogen content.Referring to bibliography (aquatic life ambient water quality criteria for
Ammonia-freshwater, United States Environmental ProtectionAgency, 2013).The present invention
In, a reference value is a reference value under standard environment；The a reference value can be obtained by consulting literatures.
The present invention also provides the methods of the ammonia nitrogen Ecology risk assessment in different observation point ammonia nitrogen Hazard ratios
Application in relatively.It in the present invention, can be by varying environment using the method for ammonia nitrogen Ecology risk assessment of the present invention
Under the conditions of (temperature and pH value) different observation points actual measurement ammonia nitrogen exposure value unified standardizations after, be compared, solve
The technical problem that the ammonia nitrogen Ecology risk observed between point under the conditions of varying environment can not compare.
Technical solution provided by the invention is described in detail below with reference to embodiment, but they cannot be understood
For limiting the scope of the present invention.
Embodiment 1
Observe point one:
1, the temperature in measurement observation site one, pH value and ammonia nitrogen exposure value；
Temperature is 18 DEG C, pH 8.2；
Ammonia nitrogen exposure value E is 0.7mgTAN/L；
2, the ammonia nitrogen exposure value equivalent of this observation point is calculated；
log(E7,20)=log (ET, 7)-[- 0.036 (t-20)] Formula II；
It is 7.0 that the data of this point, which are adjusted according to above-mentioned formula to standard conditions pH, and temperature is 20 DEG C.It will observation
T=18 DEG C of data, pH=8.2, Et=0.7mgTAN/L obtains E after bringing formula into7.20=3.737mg/L.Obtain this observation point
The ammonia nitrogen exposure value equivalent 3.737mgTAN/L of position.
3, ammonia nitrogen risk quotient is calculated
Acute a reference value is that the chronic a reference value of 17mgTAN/L is 1.9mgTAN/L (aquaticlife ambient water
Quality criteria for ammonia-freshwater, United States
EnvironmentalProtectionAgency,2013),
Ammonia nitrogen risk quotient=environmental exposure concentration/a reference value
The acute risk quotient of ammonia nitrogen is 0.220；
The chronic risk quotient of ammonia nitrogen is 1.967.
Embodiment 2
Observe point two:
1, the temperature in measurement observation site one, pH value and ammonia nitrogen exposure value；
Temperature is 20 DEG C, pH 8；
Ammonia nitrogen exposure value E is 2.0mg/L；
2, the ammonia nitrogen exposure value equivalent of this observation point is calculated；
log(E7,20)=log (ET, 7)-[- 0.036 (t-20)] Formula II；
It is 7.0 that the data of this point, which are adjusted according to above-mentioned formula to standard conditions pH, and temperature is 20 DEG C.It will observation
T=20 DEG C of data, pH=8.0, Et=2.0mg/L obtains E after bringing formula into7.20=8.585mg/L.Obtain this observation point
Ammonia nitrogen exposure value equivalent 8.585mg/L.
Ammonia nitrogen risk quotient=environmental exposure concentration/a reference value；
The acute risk quotient of ammonia nitrogen is 0.505；
The chronic risk quotient of ammonia nitrogen is 4.518.
4, ammonia nitrogen risk quotient is calculated
Acute a reference value is that the chronic a reference value of 17mgTAN/L is 1.9mgTAN/L (aquaticlife ambient water
Quality criteria for ammonia-freshwater, United States
EnvironmentalProtectionAgency,2013)
Ammonia nitrogen risk quotient=environmental exposure concentration/a reference value
Embodiment 3
The ammonia nitrogen risk of more above-mentioned observation point one and observation point two, observes the acute risk quotient of ammonia nitrogen of point one
It is 0.220, the chronic risk quotient of ammonia nitrogen is 1.967；The ammonia nitrogen risk quotient for observing point two is 0.505, the chronic risk of ammonia nitrogen
Quotient is 4.518；；It can be seen that acute ammonia nitrogen risk is not present in observation point, but there are chronic ammonia nitrogen risks, and observe
The chronic ammonia nitrogen risk of point two is greater than observation site one.
The above is only a preferred embodiment of the present invention, it is noted that for the ordinary skill people of the art
For member, various improvements and modifications may be made without departing from the principle of the present invention, these improvements and modifications are also answered
It is considered as protection scope of the present invention.
Claims (8)
1. a kind of method of ammonia nitrogen Ecology risk assessment, comprising the following steps:
1) temperature, pH value and the ammonia nitrogen exposure value of measurement observation point obtain observed temperature, actual measurement pH value and actual measurement ammonia nitrogen exposure
Value；
2) the actual measurement pH value and actual measurement ammonia nitrogen exposure value are brought into Formulas I and calculates the pH=7.0 after obtaining observation point standardization
When biological exposure value Et,7；
3) E that will be obtained in observed temperature described in step 1) and step 2)t,7The calculating of formula shown in Formula II is brought into be seen
Ammonia nitrogen exposure equivalent E 20 DEG C of temperature after the standardization of measuring point position, when pH=7.07,20；
4) E is utilized7,20Ammonia nitrogen risk quotient is calculated with a reference value；The ammonia nitrogen risk quotient=E7,20/ a reference value；
log(E7,20)=log (ET, 7)-[- 0.036 (t-20)] Formula II；
In Formulas I and Formula II, t is the observed temperature for observing point, and pH is the actual measurement pH value for observing point, and Et is the reality for observing point
Survey ammonia nitrogen exposure value, Et,7Refer to the biological exposure value when pH=7.0 after observation point standardizes, E7,20Observe point mark
20 DEG C of temperature after standardization, ammonia nitrogen exposure equivalent when pH=7.0；As the ammonia nitrogen risk quotient < 1, for no risk；1≤
When the ammonia nitrogen risk quotient < 10, there is risk；It is high risk when the ammonia nitrogen risk quotient >=10.
2. the method for ammonia nitrogen Ecology risk assessment according to claim 1, which is characterized in that the ammonia of the observation point
Nitrogen exposure value passes through Na's colorimetry, phenol-hypochlorite colorimetric method, salicylic acid-hypochlorite colorimetric method or determination of electrode
It obtains.
3. the method for ammonia nitrogen Ecology risk assessment according to claim 1, which is characterized in that benchmark described in step 4)
Value includes acute a reference value and chronic a reference value；The acute a reference value is 17mg TAN/L, and the chronic a reference value is 1.9mg
TAN/L, wherein TAN is the total ammonia nitrogen content in water.
4. the method for ammonia nitrogen Ecology risk assessment according to claim 1, which is characterized in that the temperature is using experiment
Room is measured with thermometer.
5. the method for ammonia nitrogen Ecology risk assessment according to claim 4, which is characterized in that the measurement knot of the temperature
Fruit by degree Celsius DEG C as unit of.
6. the method for ammonia nitrogen Ecology risk assessment according to claim 1, which is characterized in that the pH value uses pH meter
Measurement.
7. the method for ammonia nitrogen Ecology risk assessment described in claim 1~6 any one is in different observation point ammonia nitrogen wind
Danger relatively in application.
8. application according to claim 7, which is characterized in that the ammonia nitrogen risk quotient of the different observation points,
The big observation point risk of the ammonia nitrogen risk quotient observation point small compared with ammonia nitrogen risk quotient.
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| CN105548296A (en) * | 2015-12-07 | 2016-05-04 | 清华大学 | Activated sludge ammonia utilizing rate on-line detection device and detection method |
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Patent Citations (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103136601A (en) * | 2013-03-14 | 2013-06-05 | 天津大学 | Regeneration water factory effluent residual chorine risk prediction method |
| CN105548296A (en) * | 2015-12-07 | 2016-05-04 | 清华大学 | Activated sludge ammonia utilizing rate on-line detection device and detection method |
Non-Patent Citations (2)
| Title |
|---|
| 张天旭 等: "中美淡水生物对氨氮的物种敏感度对比分析", 《农业环境科学学报》 * |
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Application publication date: 20190614 |