CN103336897A - Environment evaluation method of stone coal vanadium-extracting solid waste - Google Patents

Environment evaluation method of stone coal vanadium-extracting solid waste Download PDF

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CN103336897A
CN103336897A CN2013102485159A CN201310248515A CN103336897A CN 103336897 A CN103336897 A CN 103336897A CN 2013102485159 A CN2013102485159 A CN 2013102485159A CN 201310248515 A CN201310248515 A CN 201310248515A CN 103336897 A CN103336897 A CN 103336897A
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solid waste
stone coal
extracting vanadium
coal solid
vanadium
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张一敏
史伟
刘涛
包申旭
黄晶
陈铁军
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Wuhan University of Technology WUT
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Abstract

The invention relates to an environment evaluation method of stone coal vanadium-extracting solid waste. The environment evaluation method comprises the evaluation steps of step 1, determination of water content of the stone coal vanadium-extracting solid waste and analysis of average particle diameter of the stone coal vanadium-extracting solid waste; step 2, survey of annual average wind speed u of a stone coal vanadium-extracting solid waste storage yard and area S of the stone coal vanadium-extracting solid waste storage yard; step 3, calculation of dusting amount Qp of the stone coal vanadium-extracting solid waste; step 4, forecast of dust concentration in a downwind direction by adopting an atmosphere Screen 3 estimation mode; step 5, leaching toxicity analysis; step 6, evaluation index selection; and step 7, fuzzy comprehensive evaluation. The environment evaluation method disclosed by the invention has the characteristics of simpleness and convenience in operation and high efficiency, not only can pollution degree of the stone coal vanadium-extracting solid waste on environment be quantitatively analyzed, but also the influence of stone coal vanadium-extracting solid waste storage environment on atmosphere and water body can be objectively and accurately analyzed, and reliable basis is provided for treating the stone coal vanadium-extracting solid waste.

Description

A kind of environmental assessment techniques of extracting vanadium from stone coal solid waste
Technical field
The invention belongs to the environmental assessment techniques technical field, be specifically related to a kind of environmental assessment techniques of extracting vanadium from stone coal solid waste.
Background technology
The development of industrial and mining enterprises and quickening of urbanization process have promoted social progress and human living standard's raising, but a large amount of pollutants that produce in the productive life process simultaneously also cause the aggravation of environmental problem.Along with the raising of people's environmental consciousness, country and government are to the increasing of the management of environment, and corresponding laws and regulations policy is also put into effect in succession, and environmental problem has obtained certain mitigation.The researcher spends great amount of manpower and material resources both at home and abroad, and environment is administered research, is intended to further improve people's quality of life, reduces pollutant to the harm of environment.But present research mainly concentrates on big G﹠W improvement aspect, " final state " of this pollutant of solid waste does not cause the attention that people are enough, caused a series of environmental problem thus, the for example leakage of dust pollution, percolate etc. has not only caused serious environmental to pollute but also has contained The development in society and economy.
Bone coal has characteristics such as the vanadium reserves are abundant, Regional Distribution is wide, along with the application in high-tech area of the development of process for extracting vanadium from stone coal and vanadium, bone coal vanadium metallurgy industry has become a kind of important industry of China, extracts vanadium and also become the important channel that China obtains vanadium resource from bone coal.But the low characteristics (0.13 ~ 1.2%) of bone coal ubiquity vanadium grade of China have caused will producing a large amount of barren rocks at mining phase, produce a large amount of leached muds in the production run, are 0.8% according to the vanadium grade, the V of every production 1t 2O 5The solid slag of 220t will be produced.Barren rock only passes through the physics fragmentation, and composition changes little, can not produce environment and pollute, and generally adopts the mode in backfill pit that it is handled; But solid slag does not have the suitable means of utilizing at present, mainly adopts the mode of tailings reservoir for piling simply to dispose.Because solid slag has passed through technological processes such as decarburization, roasting, leaching, of a great variety, the complicated component that have caused solid slag, contain more harmful element in the part waste residue, may pollute the environment of periphery in the process of storing up, therefore extracting vanadium from stone coal solid waste is carried out environmental evaluation seems particularly important.At present, about the environmental evaluation of extracting vanadium from stone coal solid waste, Chinese scholars research is less.Mainly be that extracting vanadium from stone coal solid waste generation and extracting vanadium from stone coal solid waste are carried out an evaluation simply qualitatively to the influence of environment, subjective factor is bigger, does not consider the singularity of extracting vanadium from stone coal solid waste.
Summary of the invention
The present invention is intended to overcome the prior art defective, purpose provides the environmental assessment techniques of the high extracting vanadium from stone coal solid waste of a kind of easy and simple to handle and efficient, this method can be analyzed extracting vanadium from stone coal solid waste objective and accurately and store up the influence that environment produces atmosphere and water body, for the disposal of extracting vanadium from stone coal solid waste provides foundation.
For achieving the above object, the step of the environmental assessment techniques of the present invention's employing is:
The specificity analysis of step 1, extracting vanadium from stone coal solid waste comprises the analysis of mensuration and the extracting vanadium from stone coal solid waste mean grain size of extracting vanadium from stone coal solid waste water percentage.
The exploration of step 2, extracting vanadium from stone coal solid waste stockyard condition, the exploration of extracting vanadium from stone coal solid waste stockyard condition mainly comprise the exploration of annual mean wind speed u and the extracting vanadium from stone coal solid waste storage space S in extracting vanadium from stone coal solid waste stockyard.
Step 3, extracting vanadium from stone coal solid waste play the calculating of dust quantity
Figure BDA0000338602601
In the formula (1): Q p-extracting vanadium from stone coal solid waste plays dust quantity, kg/ta;
The water percentage of w-extracting vanadium from stone coal solid waste, %;
The mean wind speed in u-extracting vanadium from stone coal solid waste stockyard, m/s;
K-experience factor, K are the functional relation of water percentage w;
K=-0.007w+1.0251 (1.1)
u 0A dirt wind speed of-extracting vanadium from stone coal solid waste particle, m/s;
u 0=1.5904d p 0.334w 1.114 （1.2）
In the formula (1.2): d pThe particle diameter of-extracting vanadium from stone coal solid waste, μ m;
In formula (1.1) and (1.2): the water percentage of w-extracting vanadium from stone coal solid waste, %.
The prediction of step 4, atmosphere Screen3 estimation mode
Dust emission data based on extracting vanadium from stone coal solid waste, condition in conjunction with extracting vanadium from stone coal solid waste stockyard, adopt atmosphere Screen3 estimation mode that following wind direction dust concentration is predicted, determine extracting vanadium from stone coal solid waste plant area border and atmospheric protection distance.
Step 5, leaching oxicity analysis
Regulation according to HJ557-2010 " solid waste leaches the horizontal succusion of toxicity leaching method " leaches oxicity analysis to extracting vanadium from stone coal solid waste.
Step 6, determine evaluation index
Serve as to estimate collection with GB3838-2002 " national surface water quality standard " correlation water grade scale, with the poisonous and harmful element that exceeds standard in the leachate evaluation index as fuzzy overall evaluation.
Step 7, fuzzy overall evaluation
Earlier determine the degree of membership of evaluation object to fall half trapezoidal function, determine the weight of evaluation index again with principal component analysis (PCA), leachate to solid waste carries out fuzzy overall evaluation then, namely obtains extracting vanadium from stone coal solid waste and stores up peripheral water body environment impact assessment.
The method for measuring of described extracting vanadium from stone coal solid waste water percentage is: take by weighing 1000g extracting vanadium from stone coal solid waste, place glassware, under 105 ℃ ± 5 ℃ conditions, be dried to constant weight, measuring extracting vanadium from stone coal solid waste loss quality is m 1, then water percentage w is:
w = m 1 1000 × 100 %
The analysis of described extracting vanadium from stone coal solid waste mean grain size is: take by weighing the extracting vanadium from stone coal solid waste sample 500g that is dried to constant weight, adopt 100 order round-hole meshes that described sample is sieved, adopt BT-9300H type laser particle size analyzer to measure to screened part, determine the particle mean grain size of described sample.
Because adopt technique scheme, the present invention compared with prior art has following good effect:
1. the present invention analyzes the environmental impact of solid waste fully understanding on the basis of extracting vanadium from stone coal solid waste characteristic, can understand to more convenient and quicker the polluting property of extracting vanadium from stone coal solid waste;
2. the present invention is foundation with country or industry standard, adopt the method for quantitative test, can accurately analyze extracting vanadium from stone coal solid waste to the pollution level of environment, can also accurately analyze extracting vanadium from stone coal solid waste and store up environment to the influence of atmosphere and water body generation, overcome the subjective factor that adopts heuristic method and empirical method to produce, made evaluation result more objective rationally;
3. the present invention analyzes the characteristic of extracting vanadium from stone coal solid waste, is the disposal landfill of extracting vanadium from stone coal solid waste, and comprehensive utilization provides scientific basis.
The present invention adopts and leaches toxicity and play the dust quantity analysis, estimate extracting vanadium from stone coal solid waste and store up the influence that environment causes, have easy and simple to handle and the high characteristics of efficient, can not only analyze extracting vanadium from stone coal solid waste quantitatively to the pollution level of environment, can also analyze extracting vanadium from stone coal solid waste objective and accurately and store up the influence that environment produces atmosphere and water body, for the disposal of extracting vanadium from stone coal solid waste provides reliable foundation.
Description of drawings
Fig. 1 is the mean grain size analysis of a kind of extracting vanadium from stone coal solid waste of the present invention.
Embodiment
The present invention will be further described below in conjunction with the drawings and specific embodiments, is not the restriction to its protection domain.
Embodiment 1
A kind of environmental assessment techniques of extracting vanadium from stone coal solid waste.The step of this environmental assessment techniques is:
The specificity analysis of step 1, extracting vanadium from stone coal solid waste comprises the analysis of mensuration and the extracting vanadium from stone coal solid waste mean grain size of extracting vanadium from stone coal solid waste water percentage.
The method for measuring of described extracting vanadium from stone coal solid waste water percentage is: take by weighing 1000g extracting vanadium from stone coal solid waste, place glassware, under 105 ℃ ± 5 ℃ conditions, be dried to constant weight, measuring extracting vanadium from stone coal solid waste loss quality is m 1, then water percentage w is:
w = m 1 1000 × 100 %
The analysis of described extracting vanadium from stone coal solid waste mean grain size is: take by weighing the extracting vanadium from stone coal solid waste sample 500g that is dried to constant weight, adopt 100 order round-hole meshes that described sample is sieved, adopt BT-9300H type laser particle size analyzer to measure to screened part, determine the particle mean grain size of described sample.
Stockyard and the specificity analysis thereof of the extracting vanadium from stone coal solid waste refuse of present embodiment see Table 1.
Table 1 evaluation object and specificity analysis thereof
Figure BDA0000338602604
Wherein the grain diameter of water logging dump leaching slag and removal of impurities slag is thicker, and it plays the dirt wind speed and reaches tens of even hundreds of metre per second (m/s)s, therefore need not further analyze its particle diameter.
The exploration of step 2, extracting vanadium from stone coal solid waste stockyard condition, the exploration of extracting vanadium from stone coal solid waste stockyard condition mainly comprises the exploration of the area S in the annual mean wind speed u in extracting vanadium from stone coal solid waste stockyard and extracting vanadium from stone coal solid waste stockyard, and present embodiment stockyard condition enactment is the area S=1000000m in 2.8m/s and extracting vanadium from stone coal solid waste stockyard for mean wind speed u 2.
Step 3, extracting vanadium from stone coal solid waste play the calculating of dust quantity
Figure BDA0000338602605
In the formula (1): Q p-extracting vanadium from stone coal solid waste plays dust quantity, kg/ta;
The water percentage of w-extracting vanadium from stone coal solid waste, %;
The mean wind speed in u-extracting vanadium from stone coal solid waste stockyard, m/s;
K-experience factor, K are the functional relation of water percentage w;
K=-0.007w+1.0251 (1.1)
u 0A dirt wind speed of-extracting vanadium from stone coal solid waste particle, m/s;
u 0=1.5904d p 0.334w 1.114 （1.2）
In the formula (1.2): d pThe particle diameter of-extracting vanadium from stone coal solid waste, μ m;
In formula (1.1) and (1.2): the water percentage of w-extracting vanadium from stone coal solid waste, %.
Can draw the dust quantity of different extracting vanadium from stone coal solid waste under the wind speed of different stockyards, its result such as table 2 by formula (1), (1.1) with (1.2).
The dust quantity that rises of solid waste is analyzed g/s under the different wind speed of table 2
Wind speed/m/s The acidleach dump leaching Acidleach is stirred and is soaked slag Water logging is stirred and is soaked slag Ammonium soaks slag The NaOH leached mud
1 -602.8582 -4.57769 -0.75709 -76.3602 -40.5136
2 -483.2364 -2.06472 -0.51534 -21.1225 -10.5054
3 -380.5877 -0.69628 -0.33146 -2.12706 -0.84589
4 -293.6133 -0.12446 -0.19753 0.007097 0.026638
5 -221.0148 -0.00141 -0.10563 4.66076 3.673997
6 -161.4934 0.020751 -0.04784 31.21478 21.65797
7 -113.7505 0.28991 -0.01626 99.04999 65.54034
8 -76.48762 1.153937 -0.00297 227.5472 146.8829
9 -48.40597 2.960712 -3.9E-05 436.0874 277.2474
10 -28.20699 6.058109 0.000433 744.0513 468.1957
The prediction of rapid four, atmosphere Screen3 estimation mode
Dust emission data based on extracting vanadium from stone coal solid waste, condition in conjunction with extracting vanadium from stone coal solid waste stockyard, adopt atmosphere Screen3 estimation mode that following wind direction dust concentration is predicted, determine extracting vanadium from stone coal solid waste plant area border and atmospheric protection distance, the results are shown in Table 3.
The dust pollution analysis of table 3 extracting vanadium from stone coal solid waste
Figure BDA0000338602606
From the atmosphere evaluation result as can be seen, ammonium soaks slag and the NaOH leached mud easily causes dust pollution, is under the condition of 6m/s at wind speed, and the maximum flooring concentration of TSP that ammonium soaks slag is 7.103 mg/m 3, its atmospheric protection distance is 850m; The maximum flooring concentration of the TSP of NaOH leaching is 4.929mg/m with this understanding 3, its atmospheric protection is apart from 750m.All less than 3.5m/s, so the extracting vanadium from stone coal solid waste stockyard of present embodiment can not produce dust pollution to atmosphere in conjunction with the mean wind speed in stockyard.
Step 5, leaching oxicity analysis
Regulation according to HJ557-2010 " solid waste leaches the horizontal succusion of toxicity leaching method " leaches oxicity analysis to extracting vanadium from stone coal solid waste, and is as shown in table 4.
Table 4 solid waste leaches toxic unit/mg/L
Kind As Pb Zn Cd Cr NH 3-N P
Acidleach dump leaching slag 0.157 0.018 0.146 0.011 0.019 2.43 1.221
Acidleach is stirred and is soaked slag 0.816 0.030 0.119 0.001 0.015 0.88 0.485
Water logging dump leaching slag 0.088 0.003 0.039 0.0003 0.028 0.57 0.178
Water logging is stirred and is soaked slag 0.078 0.004 0.100 0.001 0.040 0.83 0.294
Ammonium soaks slag 0.723 0.011 0.153 0.412 0.005 5.81 0.641
The NaOH leached mud 0.039 0.039 0.041 0.054 0.008 0.74 1.974
The removal of impurities slag 0.569 0.078 1.334 0.134 2.330 0.14 1.593
Step 6, determine evaluation index
Serve as to estimate collection with GB3838-2002 " national surface water quality standard " correlation water grade scale, with the poisonous and harmful element that exceeds standard in the leachate evaluation index as fuzzy overall evaluation.Adopt corresponding characterization method that the ion concentration in the leachate is measured, choose arsenic, lead, zinc, cadmium, chromium, ammonia nitrogen, phosphorus as the evaluation index of water pollution.
Step 7, fuzzy overall evaluation
Earlier determine the degree of membership of evaluation object to fall half trapezoidal function, determine the weight of evaluation index again with principal component analysis (PCA), leachate to solid waste carries out fuzzy overall evaluation then, namely obtains extracting vanadium from stone coal solid waste and stores up peripheral water body environment impact assessment.
Compose the method for weighing according to principal component analysis (PCA), the weighted value of arsenic, lead, zinc, cadmium, chromium, ammonia nitrogen, phosphorus is followed successively by 0.1072,0.1634,0.1515,0.1708,0.1649,0.1660,0.0763; The extent of injury to environment: cadmium＞ammonia nitrogen＞chromium＞lead＞zinc＞arsenic＞phosphorus, with the toxicology feature similarity of each element, therefore use this method that weight is carried out assignment, be more scientific and reasonable.
The fuzzy relationship matrix r of acidleach dump leaching slag 1
R 1 = 0 0 0 0 1.0000 0 0.8000 0.2000 0 0 0.8989 0.1011 0 0 0 0 0 0 0 1.0000 0.7750 0.2250 0 0 0 0 0 0 0 1.0000 0 0 0 0 1.0000
The fuzzy relationship matrix r that soaks slag is stirred in acidleach 2
R 2 = 0 0 0 0 1.0000 0 0.5000 0.5000 0 0 0.9274 0.0726 0 0 0 1.0000 0 0 0 0 0.8750 0.1250 0 0 0 0 0.2400 0.7600 0 0 0 0 0 0 1.0000
The fuzzy relationship matrix r of water logging dump leaching slag 3
R 3 = 0 0 0.2400 0.7600 0 1.0000 0 0 0 0 1.0000 0 0 0 0 1.0000 0 0 0 0 0.5500 0.4500 0 0 0 0 0.8600 0.1400 0 0 0 0.2200 0.7800 0 0
The fuzzy relationship matrix r that soaks slag is stirred in water logging 4
R 4 = 0 0 0.4400 0.5600 0 1.0000 0 0 0 0 0.9474 0.0526 0 0 0 1.0000 0 0 0 0 0.2500 0.7500 0 0 0 0 0.3400 0.6600 0 0 0 0 0.0600 0.9400 0
The fuzzy relationship matrix r of ammonia leaching residue 5
R 5 = 0 0 0 0 1.0000 0 0.9750 0.0250 0 0 0.8915 0.1085 0 0 0 0 0 0 0 1.0000 1.0000 0 0 0 0 0 0 0 0 1.0000 0 0 0 0 1.0000
NaOH leached mud R 6
R 6 = 0 0 0 0 1.0000 0 0.3250 0.6750 0 0 1.0000 0 0 0 0 0 0 0 0 1.0000 1.0000 0 0 0 0 0 0.5200 0.4800 0 0 0 0 0 0 1.0000
Removal of impurities slag R 7
R 7 = 0 0 0 0 1.0000 0 0 0 0.4400 0.5600 0 0 0.6660 0.3340 0 0 0 0 0 1.0000 0 0 0 0 1.0000 1.0000 0 0 0 0 0 0 0 0 1.0000
The fuzzy evaluation matrix B of acidleach dump leaching slag leachate 1
B 1=W·R 1[0.2640 0.1831 0.0327 0 0.5203]
The fuzzy evaluation value of acidleach dump leaching slag leachate then:
B 1 ′ = 0.2640 2 + 0.1831 2 × 2 + 0.0327 × 3 + 0 2 × 4 + 0.5203 2 × 5 0.2640 2 + 0.1831 2 + 0.0327 2 + 0 2 + 0.5203 2 = 3.9827
The fuzzy evaluation matrix B of leachate 2
B 2=W·R 2[0.4556 0.1532 0.2079 0 0.1835]
Then the fuzzy evaluation value of soaking the slag leachate is stirred in acidleach:
B 2 ′ = 0.4456 2 + 0.1532 2 × 2 + 0.2079 2 × 3 + 0 2 × 4 + 0 . 1835 2 × 5 0.4456 2 + 0.1532 2 + 0.2079 2 + 0 2 + 0.1835 2 = 1.3176
The fuzzy evaluation matrix B of leachate 3
B 3=W·R 3[0.5764 0.2334 0.1085 0.0815 0]
The fuzzy evaluation value of water logging dump leaching slag leachate then:
B 3 ′ = 0.5764 2 + 0.2334 2 × 2 + 0.1085 2 × 3 + 0.0815 2 × 4 + 0 2 × 5 0.5764 2 + 0.2334 2 + 0.1085 2 + 0.0815 2 + 0 2 = 1.1837
The fuzzy overall evaluation matrix B of leachate 4
B 4=W·R 4[0.5190 0.1881 0.1613 0.1318 0]
Then the fuzzy evaluation value of soaking the slag leachate is stirred in water logging:
B 4 ′ = 0.5190 2 + 0 . 1881 2 × 2 + 0 . 1613 2 × 3 + 0.1318 2 × 4 + 0 2 × 5 0 . 5190 2 + 0.1881 2 + 0 . 1613 2 + 0.1318 2 + 0 2 = 1 . 4008
The fuzzy overall evaluation matrix B of leachate 5
B 5=W·R 5[0.3000 0.1758 0.0041 0 0.5203]
Then ammonium soaks the fuzzy evaluation value of slag leachate:
B 5 ′ = 0.3000 2 + 0 . 1758 2 × 2 + 0 . 0041 2 × 3 + 0 2 × 4 + 0 . 5203 2 × 5 0 . 3000 2 + 0.1758 2 + 0 . 0041 2 + 0 2 + 0.5203 2 = 3.7650
The fuzzy overall evaluation matrix B of leachate 6
B 6=W·R 6[0.3164 0.1394 0.1900 0 0.3543]
The fuzzy evaluation value of NaOH leached mud leachate then:
B 6 ′ = 0 . 3164 2 + 0 . 1394 2 × 2 + 0 . 1900 2 × 3 + 0 2 × 4 + 0 . 3543 2 × 5 0 . 3164 2 + 0.1394 2 + 0 . 1900 2 + 0 2 + 0 . 3543 2 = 3.0426
The fuzzy overall evaluation matrix B of leachate 7
B 7=W·R 7[0.1660 0 0.1009 0.1225 0.6101]
The fuzzy evaluation value of removal of impurities slag leachate then:
B 7 ′ = 0.1660 2 + 0 2 × 2 + 0 . 1009 2 × 3 + 0.1225 2 × 4 + 0 . 6101 2 × 5 0.1660 2 + 0 2 + 0.1009 2 + 0.1225 2 + 0 . 6101 2 = 4.6574
According to the result of the water quality fuzzy overall evaluation of each extracting vanadium from stone coal solid waste leachate of present embodiment as can be known, acidleach is stirred and is soaked slag, water logging dump leaching slag, water logging and stir that to soak the slag muck dis environment little to the pollution of water body, and the water quality of leachate is followed successively by 1.3176,1.1837,1.4008 classes; Acidleach dump leaching slag, ammonium soak slag, the NaOH leached mud is bigger to the harm of environment, and the water quality of leachate is followed successively by 3.9827,3.7650,3.0426 classes; The removal of impurities slag is to the harm maximum of environment, and the water quality of its leachate is 4.6574 classes.
According to this evaluation method, extracting vanadium from stone coal solid waste can not cause dust pollution to atmosphere; Aspect water body destruction, different extracting vanadium from stone coal solid waste are to the pollution level difference of environment, removal of impurities slag having the greatest impact to environment wherein, be mainly reflected in heavy metal ion such as arsenic, lead, zinc, chromium and ammonia nitrogen, phosphorus nutrition material to the destruction of water body, should monitor the eutrophication situation of peripheral water body in real time, strengthen the antiseepage leak-proof measure in stockyard.
This embodiment compared with prior art has following good effect:
1. this embodiment is analyzed the environmental impact of solid waste fully understanding on the basis of extracting vanadium from stone coal solid waste characteristic, can understand to more convenient and quicker the polluting property of extracting vanadium from stone coal solid waste;
2. this embodiment is foundation with country or industry standard, adopt the method for quantitative test, can accurately analyze extracting vanadium from stone coal solid waste to the pollution level of environment, can also accurately analyze extracting vanadium from stone coal solid waste and store up environment to the influence of atmosphere and water body generation, overcome the subjective factor that adopts heuristic method and empirical method to produce, made evaluation result more objective rationally;
3. this embodiment is analyzed the characteristic of extracting vanadium from stone coal solid waste, is the disposal landfill of extracting vanadium from stone coal solid waste, and comprehensive utilization provides scientific basis.
This embodiment adopts and leaches toxicity and play the dust quantity analysis, estimate extracting vanadium from stone coal solid waste and store up the influence that environment causes, have easy and simple to handle and the high characteristics of efficient, can not only analyze extracting vanadium from stone coal solid waste quantitatively to the pollution level of environment, can also analyze extracting vanadium from stone coal solid waste objective and accurately and store up the influence that environment produces atmosphere and water body, for the disposal of extracting vanadium from stone coal solid waste provides reliable foundation.

Claims (3)

1. the environmental assessment techniques of an extracting vanadium from stone coal solid waste is characterized in that the step of this environmental assessment techniques is:
The specificity analysis of step 1, extracting vanadium from stone coal solid waste comprises the analysis of mensuration and the extracting vanadium from stone coal solid waste mean grain size of extracting vanadium from stone coal solid waste water percentage;
The exploration of step 2, extracting vanadium from stone coal solid waste stockyard condition, the exploration of extracting vanadium from stone coal solid waste stockyard condition mainly comprise the exploration of annual mean wind speed u and the extracting vanadium from stone coal solid waste storage space S in extracting vanadium from stone coal solid waste stockyard;
Step 3, extracting vanadium from stone coal solid waste play the calculating of dust quantity
In the formula (1): Q p-extracting vanadium from stone coal solid waste plays dust quantity, kg/ta;
The water percentage of w-extracting vanadium from stone coal solid waste, %;
The mean wind speed in u-extracting vanadium from stone coal solid waste stockyard, m/s;
K-experience factor, K are the functional relation of water percentage w;
K=-0.007w+1.0251 (1.1)
u 0A dirt wind speed of-extracting vanadium from stone coal solid waste particle, m/s;
u 0=1.5904d p 0.334w 1.114 （1.2）
In the formula (1.2): d pThe particle diameter of-extracting vanadium from stone coal solid waste, μ m;
In formula (1.1) and (1.2): the water percentage of w-extracting vanadium from stone coal solid waste, %;
The prediction of step 4, atmosphere Screen3 estimation mode
Dust emission data based on extracting vanadium from stone coal solid waste, condition in conjunction with extracting vanadium from stone coal solid waste stockyard, adopt atmosphere Screen3 estimation mode that following wind direction dust concentration is predicted, determine extracting vanadium from stone coal solid waste plant area border and atmospheric protection distance;
Step 5, leaching oxicity analysis
Regulation according to HJ557-2010 " solid waste leaches the horizontal succusion of toxicity leaching method " leaches oxicity analysis to extracting vanadium from stone coal solid waste;
Step 6, determine evaluation index
Serve as to estimate collection with GB3838-2002 " national surface water quality standard " correlation water grade scale, with the poisonous and harmful element that exceeds standard in the leachate evaluation index as fuzzy overall evaluation;
Step 7, fuzzy overall evaluation
Earlier determine the degree of membership of evaluation object to fall half trapezoidal function, determine the weight of evaluation index again with principal component analysis (PCA), leachate to solid waste carries out fuzzy overall evaluation then, namely obtains extracting vanadium from stone coal solid waste and stores up peripheral water body environment impact assessment.
2. according to the environmental assessment techniques of claims 1 described extracting vanadium from stone coal solid waste, the method for measuring that it is characterized in that described extracting vanadium from stone coal solid waste water percentage is: take by weighing 1000g extracting vanadium from stone coal solid waste, place glassware, under 105 ℃ ± 5 ℃ conditions, be dried to constant weight, measuring extracting vanadium from stone coal solid waste loss quality is m 1, then water percentage w is:
Figure FDA0000338602592
。
3. according to the environmental assessment techniques of claims 1 described extracting vanadium from stone coal solid waste, the analysis that it is characterized in that described extracting vanadium from stone coal solid waste mean grain size is: take by weighing the extracting vanadium from stone coal solid waste sample 500g that is dried to constant weight, adopt 100 order round-hole meshes that described sample is sieved, adopt BT-9300H type laser particle size analyzer to measure to screened part, determine the particle mean grain size of described sample.
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CN103778335A (en) * 2014-01-22 2014-05-07 中国环境科学研究院 Chemical industrial park particular pollutant monitoring method based on fuzzy comprehensive evaluation
CN113268027A (en) * 2021-05-20 2021-08-17 榆林学院 Intelligent coal gasification slag environment influence monitoring system based on cloud computing and use method thereof

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