CN104020278B - OGFC compound is to the water purification evaluation methodology of rainfall and device - Google Patents
OGFC compound is to the water purification evaluation methodology of rainfall and device Download PDFInfo
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Abstract
The invention discloses a kind of OGFC compound to the water purification evaluation methodology of rainfall and the device of simulated rainfall.This evaluation methodology includes water sample preparation, the making of OGFC compound test specimen, rainfall control, water sample is collected, the concentration of SS and COD measures, the adsorption rate of calculating SS and COD, and then is evaluated purifying water effect.This device includes framework, water tank, effusion meter, water pipe, described framework includes support and test-piece stand, described water tank is placed in the top of framework, water tank is provided with agitator, one end of water pipe is connected with water tank, the other end is connected with shower nozzle, and water pipe is provided with valve and effusion meter, and test-piece stand is placed in the bottom of framework.The water purification evaluation methodology of the present invention is simple to operate, evaluate accurately to purifying water effect, to rainwater further with laying a good foundation, the present invention is for alleviating the shortage of water resources in city, it is achieved the utilization of rainwater, is turned waste into wealth by rainwater and has important meaning.
Description
Technical field
The invention belongs to rainwater treatment technical field, relate to a kind of OGFC compound road pavement runoff and purify effect
The evaluation methodology of fruit, particularly relates to a kind of OGFC compound to the water purification evaluation methodology of rainfall and device.
Background technology
Open-shelf range (Open Graded Friction Course is called for short OGFC) is also known as porous
Road surface or water-permeable pavement, be generally of higher voidage (generally 18-25%), can by road surface rainfall and
Time penetrate into road surface, by the hole of connection, rainwater is discharged, can prevent road surface from producing thicker moisture film, and then
Substantially increase the safety of rainy day driving.
The current of urban road runoff mostly come from natural rainfall, and the pollutant of its runoff are mainly derived from road
Surface pollution and rainwater pollution.The feature that road surface is polluted mainly shows as fine day and accumulates on earth's surface, and the rainy day is washed
Enter drainage system, after collecting, enter the feature of water body；Rainwater pollution is mainly derived from rainfall in air
The drip washing of dust, nitrogen oxides, sulfide etc..Runoff contaminants mainly has solids suspension and organic
Nutrient, the chloride etc. such as pollutant, heavy metal, P, N.Wherein solid suspension SS and chemical oxygen demand
Amount COD is the leading indicator characterizing urban road surfaces runoff pollution.
Owing to urban road occupied area is big, runoff pollution has become non point source of pollution maximum in city, and
The pollutant load of Initial Runoff is high, the concentration requirement that concentration is discharged considerably beyond rainwater, even more than
The requirement of " integrated wastewater discharge standard " (GB 8978296) primary standard.If the current of runoff enter dirt
Water treatment plant, then increase the difficulty of sewage disposal；If the current of runoff enter natural water, then pollute
Environment around and soil.Therefore, how rainwater is turned waste into wealth and become a focus urgently to be resolved hurrily and ask
Topic.
It is belonging respectively to pavement material due to urban road OGFC compound and rainwater purification and rainwater purification processes
Two different ambits, little to research in this respect, more without reference to OGFC compound both at home and abroad
The method that the water purification of road pavement rainfall is evaluated.Therefore, the present invention breaks boundary of discipline, proposes a kind of OGFC
The water purification evaluation methodology of compound road pavement rainfall.
Summary of the invention
For solving problems of the prior art, the present invention provides clean to rainfall of a kind of OGFC compound
Water quality evaluation method, it comprises the following steps according to sequencing:
(1) carry out water sample preparation according to pollutant kind and aimed concn, estimate experimental water amount, measure pollutant
Standby, in water tank, inject tap water, and turn on agitator, pollutant are poured in water tank；
(2) make plate test coupon, test specimen is placed in test piece mould, and be placed on test-piece stand central authorities；
(3) opening also control valve, control the flow of effusion meter, water sample passes through sprinkler on test specimen；
(4) controlling rainfall, rain time is divided into two stages, first stage, the time of the duration of rainfall is
15min, sampling interval is 3min, second stage, and the time of the duration of rainfall is 56min, front 6min, sampling
Being spaced apart 3min, 6-56min, sampling interval is 10min；
(5) in the first stage of step (4), below shower nozzle, former water sample is collected, at first stage and second-order
Duan Zhong, according to the water sample after the sampling interval collection and purification in step (4) at the lateral opening of test piece mould；
(6) concentration and the concentration of COD of the solid suspension of each water sample are measured；
(7) solid suspension concentration and COD concentration according to each water sample measured in step (6) are carried out
Data process, and calculate adsorption rate and the adsorption rate of COD of solid suspension, carry out purifying water effect
Evaluate.
" mensuration (gravimetric method) of GB_T_11901-1989 water quality _ float " is used to measure consolidating of each water sample
The concentration of body float (SS), uses " mensuration (the weight chromium of GB_11914-1989 water chemical oxygen demand
Hydrochlorate method) " measure the concentration of the COD (COD) of each water sample.
When the adsorption rate of solid suspension is rainfall stopping, absorption remains in consolidating in OGFC compound test specimen
The quality of body float is (with MInhaleRepresenting) total amount of contained solid suspension is (with M with whole rainfallAlwaysRepresent) ratio, i.e. SS adsorption rate=[MInhale/MAlways] * 100%, wherein MAlwaysSolid for former water sample suspends
Concentration k of thing0With first stage rain time V1Product, i.e. MAlways=k0V1；MInhaleFor the first stage inhales
Attached remain in the mass M of solid suspension in OGFC compound test specimenInhale 1Deduct consolidating of going out in second stage
The mass M of body floatInhale 2, i.e. MInhale=MInhale 1-MInhale 2, MInhale 1For MAlwaysDeduct the first stage through OGFC
Concentration k of the water sample solid suspension after compound purification1iWith this stage rain time V1iProduct (i for fall
The sampling number of times of rain sampling interval), MInhale 2Concentration k for second stage water sample solid suspension2iWith this stage
Rain time V2iProduct.So, SS adsorption rate=[MInhale/MAlways] * 100%=[(MInhale 1-MInhale 2)/MAlways] * 100%=[(k0V1-k1iV1i-k2iV2i)/k0V1] * 100%.The calculating side of the adsorption rate of COD
Method is identical with the computational methods of the adsorption rate of solid suspension, and computing formula is the most identical, i.e. COD adsorbs
Rate=[MInhale′/MAlways'] * 100%=[(MInhale 1'-MInhale 2′)/MAlways'] * 100%=[(k0′V1-k1i′
V1i-k2i′V2i)/k0′V1] * 100%.
The present invention is with the adsorption rate size of SS and COD as evaluation index, and the adsorption rate of SS and COD is the biggest,
Showing that purifying water effect is the best, the adsorption rate of SS and COD is the least, shows that purifying water effect is the poorest.SS and COD
Adsorption rate and the linear corresponding relation of purifying water effect.
Preferably, in described step (1), in water tank, inject 10-20L tap water.
In any of the above-described scheme preferably, in described step (1), the rotating speed of agitator is
150-250r/min。
In water tank, first inject 10-20L tap water, under the rotating speed of 150-250r/min, pollutant are slowly connected
Pour into passing through in water tank, to guarantee pollutant mix homogeneously.
In any of the above-described scheme preferably, in described step (2), the material of plate test coupon is OGFC
Compound, the length of test specimen is respectively 300mm, 300mm, 50mm.
Use rolling forming machine simulation pavement compaction process, make the tabular of the OGFC compound of above-mentioned size
Test specimen.In the manufacturing process of test specimen, the side of test specimen and bottom surface adhere to one layer of paper, by it after the test specimen demoulding
Be immersed in the water, soak 10min, then remove side and the paper of bottom surface with ferrum brush etc., with guarantee test specimen side and
Bottom surface is clean, smooth, because the length and width of test piece mould is consistent with the length and width of test specimen, so by test specimen
When being positioned in test piece mould, easy to operate, it is to avoid to be not placed into.
In any of the above-described scheme preferably, in described step (3), the flow-control of effusion meter is at 5-30L/h.
In any of the above-described scheme preferably, in described step (4), first stage precipitation is the mesh of preparation
The pollution water sample of mark concentration, second stage precipitation is tap water, and tap water is cleaner.
At the initial stage of simulated rainfall, the concentration of Runoff contaminants is high, and Relatively centralized is before runoff produces
15-30min, the concentration of later stage Runoff contaminants is low, but the persistent period is long, and therefore rain time divides two rank
Section is simulated, and has corresponding time interval, to ensure to collect enough water samples, grasps pollutant
Concentration change rule.Former water sample before collection and purification below shower nozzle, receives at the lateral opening of test piece mould
Water sample after collection purification.
The water purification evaluation methodology of the OGFC compound road pavement rainfall of the present invention, is a kind of novel evaluation side
Method, the method is simple to operate, it is accurate to evaluate purifying water effect.The present invention combines the clean of following simulated rainfall
Water device, it is provided that corresponding water purification evaluation methodology, and rainfall stage by stage, collects and measures corresponding water sample
Concentration, so evaluate OGFC compound purifying water effect, to rainwater further with laying a good foundation.
Therefore, the present invention is for alleviating the shortage of water resources in city, it is achieved the utilization of rainwater, is turned waste into wealth by rainwater
There is important meaning.
The present invention also provides for the device of a kind of simulated rainfall, including framework, water tank, effusion meter, water pipe, institute
State framework and include that support and test-piece stand, described water tank are placed in the top of framework, water tank is provided with agitator, institute
The one end stating water pipe is connected with water tank, and the other end is connected with shower nozzle, and described water pipe is provided with valve and effusion meter,
Described test-piece stand is placed in the bottom of framework.
Support can be square rib retort stand, and square rib retort stand constitutes general frame with test-piece stand.Agitator
Power is 100W.
Preferably, described device is vertical rainer.
In any of the above-described scheme preferably, described device also includes test piece mould, and test piece mould is placed in institute
State on test-piece stand.
In any of the above-described scheme preferably, described test piece mould be shaped as cuboid, length
It is respectively 300mm, 300mm, 100mm.Test piece mould is dismountable, can first pass through regulation mould
Coupling nut makes test piece mould suitably relax pine, is put into by test specimen in test piece mould, then tightens coupling nut
Test specimen can be fixed in test piece mould.Therefore, even if test specimen is equivalently-sized with the length and width of test piece mould,
But also test specimen can be put in test piece mould by regulation coupling nut.
Test piece mould is alternatively integral type.Because the length and width of test piece mould is consistent with the length and width of test specimen,
In order to avoid test specimen can not be put in test piece mould, can by appropriately sized for the length and width of test piece mould increasing, or
Person, by appropriately sized for the length and width of test specimen reduction, is optimal in test piece mould just to be put into by test specimen.
In any of the above-described scheme preferably, the bottom surface of described test piece mould is closed, end face uncovered.
In any of the above-described scheme preferably, described test piece mould has a lateral opening.Its objective is for
Simulation in real road, the combination of common upper layer OGFC compound and cutting optimal waterproof pavement
Rainfall runoff state under version, collects water sample at lateral opening.
In any of the above-described scheme preferably, the length of described framework be respectively 600mm, 600mm,
1500mm。
In any of the above-described scheme preferably, described water tank is circular, and with tank lid.
In any of the above-described scheme preferably, the volume of described water tank is 30-40L.
In any of the above-described scheme preferably, described valve is placed in the top of effusion meter.The present invention relies on water
Deadweight realize rainfall, the method being controlled effusion meter flow by control valve is realized different rainfalls
The simulation of intensity.
In any of the above-described scheme preferably, the measurement scope of described effusion meter is 5-50L/h.Range to be expired
The requirement of foot rainfall intensity, the flow of small intensity rainfall is 5.4L/h, and the flow of heavy rain is 21.6L/h.
In any of the above-described scheme preferably, a length of 200-250mm, a width of of the blade of described agitator
30-40mm。
In any of the above-described scheme preferably, described shower nozzle is circular, a diameter of 150-200mm.
In any of the above-described scheme preferably, a diameter of 3-5mm of single spray orifice on described shower nozzle.Pass through
Great many of experiments confirms, when injection diameter is 3-5mm, is possible to prevent pollutant blocking shower nozzle in rainfall.
In any of the above-described scheme preferably, the material of described water pipe is polrvinyl chloride or politef.
Pvc material and polytetrafluoroethylmaterial material have the advantages such as cheap, lightweight, resistance to raindrop erosion.
The vertical rainer of the simulated rainfall of the present invention, and special test piece mould etc., be all for
The feature of OGFC compound and the feature R & D design of rainfall, can the different rainfall intensity bar of accurate simulation
Part, this device is easy and simple to handle, economical and practical.
Accompanying drawing explanation
Fig. 1 is the process chart to the water purification evaluation methodology of rainfall of the OGFC compound according to the present invention；
Fig. 2 is the structural representation of a preferred embodiment of the device of the simulated rainfall according to the present invention；
Fig. 3 is the test piece mould of the preferred embodiment shown in Fig. 2 of the device of the simulated rainfall according to the present invention
Structural representation.
Mark explanation in figure: 1-support, 2-agitator, 3-water tank, 4-valve, 5-effusion meter, 6-water pipe,
7-shower nozzle, 8-test-piece stand, 9-spray orifice, 10-test piece mould.
Detailed description of the invention
In order to be further understood that the summary of the invention of the present invention, elaborate this below in conjunction with specific embodiment
Invention.
Embodiment one:
Using indoor molding heat to mix OGFC-13 type asphalt, Colophonium used is that shell height sticks modified pitch,
Voidage is 18%, and the grating of OGFC-13 compound is as shown in Table 1.The pollution that the water sample of preparation is measured
Thing index is solid suspension SS and COD COD, and pollutant sources is in Beijing City road
Clean soil and humic acids.Rainfall intensity is 120mm/h, and being converted into flow is 10.8L/h, refers to rainfall strong
Degree table, as shown in Table 2.
The grating of table one: OGFC-13 compound
Table two: rainfall intensity table
| Rain types | Intensity (mm/h) | Reduced discharge (L/h) |
| Small intensity rainfall | 60 | 5.4 |
| Middle intensity rainfall | 90 | 8.1 |
| Heavy rain | 120 | 10.8 |
| Heavy rain | 240 | 21.6 |
As it is shown in figure 1, the water purification evaluation methodology of OGFC-13 compound road pavement rainfall, it is according to the most suitable
Sequence comprises the following steps:
(1) carry out water sample preparation according to pollutant kind and aimed concn, inject in circle is with the water tank 3 of lid
10L tap water, turn on agitator 2, the rotating speed of agitator 2 is 150r/min, weighs 14g and cleans soil and 9g
Humic acids is slowly poured into water, and mixes 30s；
(2) make tabular OGFC-13 compound test specimen, the length of test specimen be respectively 300mm, 300mm,
50mm, is placed in test specimen in test piece mould 10, and is placed on the central authorities of test-piece stand 8, and test piece mould 10 has
One lateral opening；
(3) opening also control valve 4, the flow-control of effusion meter 5 is sprayed by shower nozzle 7 at 10.8L/h, water sample
On test specimen；
(4) in the first stage of rainfall, below shower nozzle 7, former water sample is collected, in the side of test piece mould 10
Face opening part collects each 300ml of water sample of 3min, 6min, 9min, 12min, 15min；
(5) in the second stage of rainfall, first the contaminant water in water tank 3 is discharged clean, be then injected into 20L
Tap water, at the lateral opening of test piece mould 10 collect 3min, 6min, 16min, 26min, 36min,
The each 300ml of water sample of 46min, 56min；
(6) measure SS concentration and the COD concentration of each water sample, be shown in Table three；
(7) calculate adsorption rate and the adsorption rate of COD of SS, carry out the evaluation of purifying water effect.
Table three: the SS concentration of rainfall and COD concentration
| Sampling number of times | Rain time | SS concentration (mg/L) | COD concentration (mg/L) |
| 1 | Former water sample | 370.2 | 405.30 |
| 2 | 3min (stage one) | 158.4 | 289.52 |
| 3 | 6min (stage one) | 164.7 | 209.00 |
| 4 | 9min (stage one) | 159.0 | 193.02 |
| 5 | 12min (stage one) | 163.5 | 177.78 |
| 6 | 15min (stage one) | 152.2 | 177.78 |
| 7 | 3min (stage two) | 21.0 | 45.71 |
| 8 | 6min (stage two) | 11.0 | 41.65 |
| 9 | 16min (stage two) | 7.5 | 25.00 |
| 10 | 26min (stage two) | 7.0 | 20.32 |
| 11 | 36min (stage two) | 4.5 | 15.24 |
| 12 | 46min (stage two) | 1.9 | 10.16 |
| 13 | 56min (stage two) | 0.3 | 5.23 |
SS adsorption rate=[MInhale/MAlways] * 100%=[(MInhale 1-MInhale 2)/MAlways] * 100%
=[(k0V1-k1iV1i-k2iV2i)/k0V1] * 100%
=[(370.2*15-158.4*3-164.7*3-159.0*3-163.5*3-152.2*3-21.0*3-
11.0*3-7.5*10-7.0*10-4.5*10-1.9*10-0.3*10)/370.2*15] * 100%
=51.4%
COD adsorption rate=[MInhale′/MAlways'] * 100%=[(MInhale 1'-MInhale 2′)/MAlways'] * 100%
=[(k0′V1-k1i′V1i-k2i′V2i)/k0′V1] * 100%
=[(405.30*15-289.52*3-209.00*3-193.02*3-177.78*3-177.78*3-
45.71*3-41.65*3-25.00*10-20.32*10-15.24*10-10.16*10-5.23*10)
/ 405.30*15] * 100%
=31.5%
As in figure 2 it is shown, the vertical rainer of a kind of simulated rainfall, including framework, water tank 3, effusion meter 5,
Water pipe 6, framework includes support 1 and test-piece stand 8, and water tank 3 is placed in the top of framework, is provided with and stirs in water tank 3
Mixing device 2, one end of water pipe 6 is connected with water tank 3, and the other end is connected with shower nozzle 7, and water pipe 6 is provided with valve
4 and effusion meter 5, test-piece stand 8 is placed in the bottom of framework.
The length of framework is respectively 600mm, 600mm, 1500mm.Water tank 3 is circular,
And with tank lid, the volume of water tank 3 is 30L.Valve 4 is placed in the top of effusion meter 5, effusion meter 5
Range be 5-50L/h.A length of 200mm of the blade of agitator 2, a width of 30mm.Shower nozzle 7 is circular
, a diameter of 150mm.A diameter of 3mm of single spray orifice 9 on shower nozzle 7.The material of water pipe 6 is polychlorostyrene
Ethylene.
As it is shown on figure 3, this device also includes that test piece mould 10, test piece mould 10 are placed in the central authorities of test-piece stand 8.
Test piece mould 10 be shaped as cuboid, length is respectively 300mm, 300mm, 100mm.
Because the length and width of test piece mould 10 is consistent with the length and width of test specimen, in order to avoid test specimen can not put into test specimen mould
In tool 10, test specimen side ferrum brush somewhat can be polished so that the appropriately sized reduction of length and width of test specimen,
It is advisable just test specimen is put in test piece mould 10.The bottom surface of test piece mould 10 is closed, end face uncovered,
There is a lateral opening, for collecting water sample at opening part.
Embodiment two:
Select OGFC-13 type asphalt, the dirt used by its grating, source, voidage, water sample preparation
Dye thing sources etc. are identical with embodiment one.Rainfall intensity is 240mm/h, and being converted into flow is 21.6L/h, can
With reference to rainfall intensity table, as shown in Table 2.
As it is shown in figure 1, the water purification evaluation methodology of OGFC-13 compound road pavement rainfall, it is according to the most suitable
Sequence comprises the following steps:
(1) in circle is with the water tank 3 of lid, 15L tap water is injected, turn on agitator 2, turning of agitator 2
Speed is 250r/min, weighs 15g cleaning soil and 10g humic acids is slowly poured into water, mix 40s；
(2) make length and be respectively the plate test coupon of 300mm, 300mm, 50mm, test specimen is placed in
In test piece mould 10, and being placed on the central authorities of test-piece stand 8, test piece mould 10 has a lateral opening；
(3) opening also control valve 4, the flow-control of effusion meter 5 is sprayed by shower nozzle 7 at 21.6L/h, water sample
On test specimen；
(4) in the first stage of rainfall, below shower nozzle 7, former water sample is collected, in the side of test piece mould 10
Face opening part collects each 320ml of water sample of 3min, 6min, 9min, 12min, 15min；
(5) in the second stage of rainfall, first the contaminant water in water tank 3 is discharged clean, be then injected into 20L
Tap water, at the lateral opening of test piece mould 10 collect 3min, 6min, 16min, 26min, 36min,
The each 320ml of water sample of 46min, 56min；
(6) measure SS concentration and the COD concentration of each water sample, be shown in Table four；
(7) calculate adsorption rate and the adsorption rate of COD of SS, carry out the evaluation of purifying water effect.
Table four: the SS concentration of rainfall and COD concentration
| Sampling number of times | Rain time | SS concentration (mg/L) | COD concentration (mg/L) |
| 1 | Former water sample | 375.5 | 407.11 |
| 2 | 3min (stage one) | 159.4 | 288.44 |
| 3 | 6min (stage one) | 164.1 | 210.78 |
| 4 | 9min (stage one) | 158.1 | 195.12 |
| 5 | 12min (stage one) | 164.2 | 170.89 |
| 6 | 15min (stage one) | 155.1 | 170.41 |
| 7 | 3min (stage two) | 21.5 | 47.11 |
| 8 | 6min (stage two) | 10.2 | 45.12 |
| 9 | 16min (stage two) | 8.1 | 26.10 |
| 10 | 26min (stage two) | 7.1 | 20.10 |
| 11 | 36min (stage two) | 4.0 | 14.54 |
| 12 | 46min (stage two) | 1.7 | 10.11 |
| 13 | 56min (stage two) | 0.2 | 5.10 |
SS adsorption rate=[MInhale/MAlways] * 100%=[(MInhale 1-MInhale 2)/MAlways] * 100%
=[(k0V1-k1iV1i-k2iV2i)/k0V1] * 100%
=[(375.5*15-159.4*3-164.1*3-158.1*3-164.2*3-155.1*3-21.5*3-
10.2*3-8.1*10-7.1*10-4.0*10-1.7*10-0.2*10)/375.5*15] * 100%
=51.9%
COD adsorption rate=[MInhale′/MAlways'] * 100%=[(MInhale 1'-MInhale 2′)/MAlways'] * 100%
=[(k0′V1-k1i′V1i-k2i′V2i)/k0′V1] * 100%
=[(407.11*15-288.44*3-210.78*3-195.12*3-170.89*3-170.41*3-
47.11*3-45.12*3-26.10*10-20.10*10-14.54*10-10.11*10-5.10*10)
/ 407.11*15] * 100%
=32.2%
The vertical rainer of simulated rainfall, its composition, the position relationship of each several part, the size of framework, examination
The sizes of part mould etc. are identical with embodiment one.
Water tank 3 is circular, and with tank lid, the volume of water tank is 40L.The length of the blade of agitator 2
For 250mm, a width of 40mm.Shower nozzle 7 is circular, a diameter of 200mm.Single spray orifice on shower nozzle 7
A diameter of 5mm of 9.The material of water pipe 6 is politef.Test piece mould 10 is dismountable, its end
Face closure, end face uncovered, there is a lateral opening, for collecting water sample at opening part.
Embodiment three:
Select OGFC-13 type asphalt, the dirt used by its grating, source, voidage, water sample preparation
Dye thing sources etc. are identical with embodiment one.Rainfall intensity is 90mm/h, and being converted into flow is 8.1L/h, can join
Examine rainfall intensity table, as shown in Table 2.
As it is shown in figure 1, the water purification evaluation methodology of OGFC-13 compound road pavement rainfall, it is according to the most suitable
Sequence comprises the following steps:
(1) in circle is with the water tank 3 of lid, 20L tap water is injected, turn on agitator 2, turning of agitator 2
Speed is 200r/min, weighs 18g cleaning soil and 15g humic acids is slowly poured into water, mix 40s；
(2) make length and be respectively the plate test coupon of 300mm, 300mm, 50mm, test specimen is placed in
In test piece mould 10, and being placed on the central authorities of test-piece stand 8, test piece mould 10 has a lateral opening；
(3) opening also control valve 4, the flow-control of effusion meter 5 is sprayed by shower nozzle 7 at 8.1L/h, water sample
On test specimen；
(4) in the first stage of rainfall, below shower nozzle, former water sample is collected, in the side of test piece mould 10
Opening part collects each 350ml of water sample of 3min, 6min, 9min, 12min, 15min；
(5) in the second stage of rainfall, first the contaminant water in water tank 3 is discharged clean, be then injected into 20L
Tap water, at the lateral opening of test piece mould 10 collect 3min, 6min, 16min, 26min, 36min,
The each 350ml of water sample of 46min, 56min；
(6) measure SS concentration and the COD concentration of each water sample, be shown in Table five；
(7) calculate adsorption rate and the adsorption rate of COD of SS, carry out the evaluation of purifying water effect.
Table five: the SS concentration of rainfall and COD concentration
| Sampling number of times | Rain time | SS concentration (mg/L) | COD concentration (mg/L) |
| 1 | Former water sample | 369.5 | 400.98 |
| 2 | 3min (stage one) | 158.1 | 290.54 |
| 3 | 6min (stage one) | 161.2 | 210.41 |
| 4 | 9min (stage one) | 157.2 | 191.25 |
| 5 | 12min (stage one) | 163.7 | 178.47 |
| 6 | 15min (stage one) | 151.4 | 173.01 |
| 7 | 3min (stage two) | 22.1 | 45.98 |
| 8 | 6min (stage two) | 11.9 | 40.12 |
| 9 | 16min (stage two) | 7.2 | 26.10 |
| 10 | 26min (stage two) | 6.9 | 19.98 |
| 11 | 36min (stage two) | 4.7 | 16.10 |
| 12 | 46min (stage two) | 2.0 | 9.98 |
| 13 | 56min (stage two) | 0.3 | 4.98 |
SS adsorption rate=[MInhale/MAlways] * 100%=[(MInhale 1-MInhale 2)/MAlways] * 100%
=[(k0V1-k1iV1i-k2iV2i)/k0V1] * 100%
=[(369.5*15-158.1*3-161.2*3-157.2*3-163.7*3-151.4*3-22.1*3-
11.9*3-7.2*10-6.9*10-4.7*10-2.0*10-0.3*10)/369.5*15] * 100%
=51.5%
COD adsorption rate=[MInhale′/MAlways'] * 100%=[(MInhale 1'-MInhale 2′)/MAlways'] * 100%
=[(k0′V1-k1i′V1i-k2i′V2i)/k0′V1] * 100%
=[(400.98*15-290.54*3-210.41*3-191.25*3-178.47*3-173.01*3-
45.98*3-40.12*3-26.10*10-19.98*10-16.10*10-9.98*10-4.98*10)
/ 400.98*15] * 100%
=30.8%
The vertical rainer of simulated rainfall, its composition, the position relationship of each several part, the size of framework, examination
The sizes of part mould etc. are identical with embodiment one.
Water tank 3 is circular, and with tank lid, the volume of water tank 3 is 35L.The blade of agitator 4
A length of 230mm, a width of 35mm.Shower nozzle 7 is circular, a diameter of 180mm.Single spray on shower nozzle 7
A diameter of 4mm in hole 9.The material of water pipe 6 is polrvinyl chloride.Test piece mould 10 is dismountable, its end
Face closure, end face uncovered, there is a lateral opening, for collecting water sample at opening part.
It will be apparent to those skilled in the art that the OGFC compound of the present invention is to the water purification evaluation methodology of rainfall and dress
Put include shown by the summary of the invention of the invention described above description and detailed description of the invention part and accompanying drawing each
The combination in any of part, does not has each scheme these combinations constituted as space is limited and for making description simple and clear
Describe one by one.All within the spirit and principles in the present invention, any modification, equivalent substitution and improvement done
Deng, should be included within the scope of the present invention.
Claims (17)
1. an OGFC compound water purification evaluation methodology to rainfall, it comprises the following steps according to sequencing:
(1) carrying out water sample preparation according to pollutant kind and aimed concn, estimate experimental water amount, it is standby to measure pollutant, injects tap water, and turn on agitator, poured in water tank by pollutant in water tank；
(2) making plate test coupon, be placed in test piece mould by test specimen, and be placed on test-piece stand central authorities, the material of described plate test coupon is OGFC compound；
(3) opening also control valve, control the flow of effusion meter, water sample passes through sprinkler on test specimen；
(4) controlling rainfall, rain time is divided into two stages, first stage, the time of the duration of rainfall is 15min, sampling interval is 3min, second stage, and the time of the duration of rainfall is 56min, front 6min, sampling interval is 3min, 6-56min, and sampling interval is 10min；First stage precipitation is the pollution water sample of the aimed concn of preparation, and second stage precipitation is tap water；
(5) in the first stage of step (4), below shower nozzle, former water sample is collected, in first stage and second stage, according to the water sample after the sampling interval collection and purification in step (4) at the lateral opening of test piece mould；
(6) concentration and the concentration of COD of the solid suspension of each water sample are measured；
(7) solid suspension concentration and COD concentration according to each water sample measured in step (6) carry out data process, calculate adsorption rate and the adsorption rate of COD of solid suspension, carry out the evaluation of purifying water effect.
2. the OGFC compound water purification evaluation methodology to rainfall as claimed in claim 1, it is characterised in that: in described step (1), in water tank, inject 10-20L tap water.
3. the OGFC compound water purification evaluation methodology to rainfall as claimed in claim 1, it is characterised in that: in described step (1), the rotating speed of agitator is 150-250r/min.
4. the OGFC compound water purification evaluation methodology to rainfall as claimed in claim 1, it is characterised in that: in described step (2), the length of test specimen is respectively 300mm, 300mm, 50mm.
5. the OGFC compound water purification evaluation methodology to rainfall as claimed in claim 1, it is characterised in that: in described step (3), the flow-control of effusion meter is at 5-30L/h.
6. one kind for device to the water purification evaluation methodology of rainfall of OGFC compound described in claim 1, including framework, water tank, effusion meter, water pipe, it is characterized in that: described framework includes support and test-piece stand, described water tank is placed in the top of framework, being provided with agitator in water tank, one end of described water pipe is connected with water tank, and the other end is connected with shower nozzle, described water pipe is provided with valve and effusion meter, and described test-piece stand is placed in the bottom of framework；Described device also includes that test piece mould, described test piece mould are placed on test-piece stand, and described test piece mould has a lateral opening, and bottom surface is closed；The material of test specimen is OGFC compound.
7. device as claimed in claim 6, it is characterised in that: described device is vertical rainer.
8. device as claimed in claim 6, it is characterised in that: described test piece mould be shaped as cuboid, length is respectively 300mm, 300mm, 100mm.
9. device as claimed in claim 6, it is characterised in that: the length of described framework is respectively 600mm, 600mm, 1500mm.
10. device as claimed in claim 6, it is characterised in that: described water tank is circular, and with tank lid.
11. devices as claimed in claim 10, it is characterised in that: the volume of described water tank is 30-40L.
12. devices as claimed in claim 6, it is characterised in that: described valve is placed in the top of effusion meter.
13. devices as claimed in claim 12, it is characterised in that: the measurement scope of described effusion meter is 5-50L/h.
14. devices as claimed in claim 6, it is characterised in that: a length of 200-250mm of the blade of described agitator, a width of 30-40mm.
15. devices as claimed in claim 6, it is characterised in that: described shower nozzle is circular, a diameter of 150-200mm.
16. devices as claimed in claim 15, it is characterised in that: a diameter of 3-5mm of single spray orifice on described shower nozzle.
17. devices as claimed in claim 6, it is characterised in that: the material of described water pipe is polrvinyl chloride or politef.
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| KR100939173B1 (en) * | 2009-10-19 | 2010-01-28 | 유흥식 | Superhigh speed permeability paving system and construction method for the prevention of flood, drought, global warming, desertification, elevation of sea level and for the recovery of the underground water |
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| HU211710B (en) * | 1991-05-31 | 1995-12-28 | Ut | Process and construction project for deaning of polluted rainfall |
| CN201666865U (en) * | 2010-03-11 | 2010-12-08 | 北京仁创科技集团有限公司 | Water permeability detection device for permeable material product |
| CN102095674A (en) * | 2011-01-24 | 2011-06-15 | 浙江工业大学 | Permeability testing method of water-permeable paving material, and special tester thereof |
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Effective date of registration: 20220110 Address after: 264200 room 410, energy conservation and environmental protection center, 186-1 Hexing Road, Yangting Town, Huancui District, Weihai City, Shandong Province Patentee after: WEIHAI YINTONG NEW MATERIAL Co.,Ltd. Address before: 100044 No. 1, Xicheng District exhibition museum, Beijing Patentee before: Beijing University of Civil Engineering and Architecture |