CN108414389A - Ecological permeable concrete detergent power analysis method - Google Patents
Ecological permeable concrete detergent power analysis method Download PDFInfo
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- CN108414389A CN108414389A CN201810106214.5A CN201810106214A CN108414389A CN 108414389 A CN108414389 A CN 108414389A CN 201810106214 A CN201810106214 A CN 201810106214A CN 108414389 A CN108414389 A CN 108414389A
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- permeable concrete
- ecological permeable
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- rainwater
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- 239000004567 concrete Substances 0.000 title claims abstract description 49
- 238000004458 analytical method Methods 0.000 title claims abstract description 25
- 239000003599 detergent Substances 0.000 title claims abstract description 21
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 claims abstract description 49
- 238000000034 method Methods 0.000 claims abstract description 19
- 238000004088 simulation Methods 0.000 claims abstract description 16
- RLJMLMKIBZAXJO-UHFFFAOYSA-N lead nitrate Chemical compound [O-][N+](=O)O[Pb]O[N+]([O-])=O RLJMLMKIBZAXJO-UHFFFAOYSA-N 0.000 claims abstract description 12
- 239000003153 chemical reaction reagent Substances 0.000 claims abstract description 11
- 238000001914 filtration Methods 0.000 claims abstract description 11
- NLXLAEXVIDQMFP-UHFFFAOYSA-N Ammonia chloride Chemical compound [NH4+].[Cl-] NLXLAEXVIDQMFP-UHFFFAOYSA-N 0.000 claims abstract description 7
- LKDRXBCSQODPBY-VRPWFDPXSA-N D-fructopyranose Chemical compound OCC1(O)OC[C@@H](O)[C@@H](O)[C@@H]1O LKDRXBCSQODPBY-VRPWFDPXSA-N 0.000 claims abstract description 7
- 239000000356 contaminant Substances 0.000 claims abstract description 7
- 239000000463 material Substances 0.000 claims description 19
- 238000002798 spectrophotometry method Methods 0.000 claims description 12
- 230000002000 scavenging effect Effects 0.000 claims description 10
- 238000003756 stirring Methods 0.000 claims description 10
- 238000012360 testing method Methods 0.000 claims description 10
- 238000002156 mixing Methods 0.000 claims description 8
- 239000003638 chemical reducing agent Substances 0.000 claims description 7
- 238000012423 maintenance Methods 0.000 claims description 7
- 238000000465 moulding Methods 0.000 claims description 7
- 239000011380 pervious concrete Substances 0.000 claims description 7
- 239000012744 reinforcing agent Substances 0.000 claims description 7
- VYPSYNLAJGMNEJ-UHFFFAOYSA-N Silicium dioxide Chemical compound O=[Si]=O VYPSYNLAJGMNEJ-UHFFFAOYSA-N 0.000 claims description 6
- 239000002689 soil Substances 0.000 claims description 5
- APUPEJJSWDHEBO-UHFFFAOYSA-P ammonium molybdate Chemical compound [NH4+].[NH4+].[O-][Mo]([O-])(=O)=O APUPEJJSWDHEBO-UHFFFAOYSA-P 0.000 claims description 4
- 229940010552 ammonium molybdate Drugs 0.000 claims description 4
- 235000018660 ammonium molybdate Nutrition 0.000 claims description 4
- 239000011609 ammonium molybdate Substances 0.000 claims description 4
- SOCTUWSJJQCPFX-UHFFFAOYSA-N dichromate(2-) Chemical compound [O-][Cr](=O)(=O)O[Cr]([O-])(=O)=O SOCTUWSJJQCPFX-UHFFFAOYSA-N 0.000 claims description 4
- 238000004448 titration Methods 0.000 claims description 4
- 229910021536 Zeolite Inorganic materials 0.000 claims description 2
- HNPSIPDUKPIQMN-UHFFFAOYSA-N dioxosilane;oxo(oxoalumanyloxy)alumane Chemical compound O=[Si]=O.O=[Al]O[Al]=O HNPSIPDUKPIQMN-UHFFFAOYSA-N 0.000 claims description 2
- 239000010881 fly ash Substances 0.000 claims description 2
- 239000010451 perlite Substances 0.000 claims description 2
- 235000019362 perlite Nutrition 0.000 claims description 2
- 239000011435 rock Substances 0.000 claims description 2
- 239000004576 sand Substances 0.000 claims description 2
- 239000002893 slag Substances 0.000 claims description 2
- 239000010455 vermiculite Substances 0.000 claims description 2
- 229910052902 vermiculite Inorganic materials 0.000 claims description 2
- 235000019354 vermiculite Nutrition 0.000 claims description 2
- 239000010457 zeolite Substances 0.000 claims description 2
- OTYBMLCTZGSZBG-UHFFFAOYSA-L potassium sulfate Chemical compound [K+].[K+].[O-]S([O-])(=O)=O OTYBMLCTZGSZBG-UHFFFAOYSA-L 0.000 claims 1
- 229910052939 potassium sulfate Inorganic materials 0.000 claims 1
- 235000011151 potassium sulphates Nutrition 0.000 claims 1
- 239000004575 stone Substances 0.000 claims 1
- 238000011156 evaluation Methods 0.000 abstract description 4
- 239000003344 environmental pollutant Substances 0.000 description 10
- 231100000719 pollutant Toxicity 0.000 description 10
- IJGRMHOSHXDMSA-UHFFFAOYSA-N Atomic nitrogen Chemical compound N#N IJGRMHOSHXDMSA-UHFFFAOYSA-N 0.000 description 8
- 239000010865 sewage Substances 0.000 description 5
- 206010001497 Agitation Diseases 0.000 description 4
- 238000013019 agitation Methods 0.000 description 4
- 229910052757 nitrogen Inorganic materials 0.000 description 4
- 239000007787 solid Substances 0.000 description 4
- 239000000725 suspension Substances 0.000 description 4
- OAICVXFJPJFONN-UHFFFAOYSA-N Phosphorus Chemical compound [P] OAICVXFJPJFONN-UHFFFAOYSA-N 0.000 description 3
- XKMRRTOUMJRJIA-UHFFFAOYSA-N ammonia nh3 Chemical compound N.N XKMRRTOUMJRJIA-UHFFFAOYSA-N 0.000 description 3
- 239000004568 cement Substances 0.000 description 3
- 230000007423 decrease Effects 0.000 description 3
- 229910052698 phosphorus Inorganic materials 0.000 description 3
- 239000011574 phosphorus Substances 0.000 description 3
- 239000002351 wastewater Substances 0.000 description 3
- 230000000694 effects Effects 0.000 description 2
- 230000003647 oxidation Effects 0.000 description 2
- 238000007254 oxidation reaction Methods 0.000 description 2
- 238000000746 purification Methods 0.000 description 2
- 230000000630 rising effect Effects 0.000 description 2
- ZLMJMSJWJFRBEC-UHFFFAOYSA-N Potassium Chemical compound [K] ZLMJMSJWJFRBEC-UHFFFAOYSA-N 0.000 description 1
- PJYJNVXOJFRJEP-UHFFFAOYSA-M [OH-].S(=O)(=O)(O)OOS(=O)(=O)O.[K+] Chemical compound [OH-].S(=O)(=O)(O)OOS(=O)(=O)O.[K+] PJYJNVXOJFRJEP-UHFFFAOYSA-M 0.000 description 1
- 238000010521 absorption reaction Methods 0.000 description 1
- 238000003556 assay Methods 0.000 description 1
- 230000015572 biosynthetic process Effects 0.000 description 1
- 210000000988 bone and bone Anatomy 0.000 description 1
- 239000004566 building material Substances 0.000 description 1
- 238000011161 development Methods 0.000 description 1
- 230000004069 differentiation Effects 0.000 description 1
- 230000009977 dual effect Effects 0.000 description 1
- 238000005516 engineering process Methods 0.000 description 1
- 238000002474 experimental method Methods 0.000 description 1
- 239000000203 mixture Substances 0.000 description 1
- 230000003204 osmotic effect Effects 0.000 description 1
- 150000004968 peroxymonosulfuric acids Chemical class 0.000 description 1
- 239000011591 potassium Substances 0.000 description 1
- 229910052700 potassium Inorganic materials 0.000 description 1
- USHAGKDGDHPEEY-UHFFFAOYSA-L potassium persulfate Chemical compound [K+].[K+].[O-]S(=O)(=O)OOS([O-])(=O)=O USHAGKDGDHPEEY-UHFFFAOYSA-L 0.000 description 1
- 230000002265 prevention Effects 0.000 description 1
- 239000002994 raw material Substances 0.000 description 1
- 229910052613 tourmaline Inorganic materials 0.000 description 1
- 229940070527 tourmaline Drugs 0.000 description 1
- 239000011032 tourmaline Substances 0.000 description 1
- 239000003643 water by type Substances 0.000 description 1
Classifications
-
- G—PHYSICS
- G01—MEASURING; TESTING
- G01N—INVESTIGATING OR ANALYSING MATERIALS BY DETERMINING THEIR CHEMICAL OR PHYSICAL PROPERTIES
- G01N5/00—Analysing materials by weighing, e.g. weighing small particles separated from a gas or liquid
- G01N5/04—Analysing materials by weighing, e.g. weighing small particles separated from a gas or liquid by removing a component, e.g. by evaporation, and weighing the remainder
-
- G—PHYSICS
- G01—MEASURING; TESTING
- G01N—INVESTIGATING OR ANALYSING MATERIALS BY DETERMINING THEIR CHEMICAL OR PHYSICAL PROPERTIES
- G01N21/00—Investigating or analysing materials by the use of optical means, i.e. using sub-millimetre waves, infrared, visible or ultraviolet light
- G01N21/17—Systems in which incident light is modified in accordance with the properties of the material investigated
- G01N21/25—Colour; Spectral properties, i.e. comparison of effect of material on the light at two or more different wavelengths or wavelength bands
- G01N21/31—Investigating relative effect of material at wavelengths characteristic of specific elements or molecules, e.g. atomic absorption spectrometry
-
- G—PHYSICS
- G01—MEASURING; TESTING
- G01N—INVESTIGATING OR ANALYSING MATERIALS BY DETERMINING THEIR CHEMICAL OR PHYSICAL PROPERTIES
- G01N21/00—Investigating or analysing materials by the use of optical means, i.e. using sub-millimetre waves, infrared, visible or ultraviolet light
- G01N21/17—Systems in which incident light is modified in accordance with the properties of the material investigated
- G01N21/25—Colour; Spectral properties, i.e. comparison of effect of material on the light at two or more different wavelengths or wavelength bands
- G01N21/31—Investigating relative effect of material at wavelengths characteristic of specific elements or molecules, e.g. atomic absorption spectrometry
- G01N21/33—Investigating relative effect of material at wavelengths characteristic of specific elements or molecules, e.g. atomic absorption spectrometry using ultraviolet light
-
- G—PHYSICS
- G01—MEASURING; TESTING
- G01N—INVESTIGATING OR ANALYSING MATERIALS BY DETERMINING THEIR CHEMICAL OR PHYSICAL PROPERTIES
- G01N21/00—Investigating or analysing materials by the use of optical means, i.e. using sub-millimetre waves, infrared, visible or ultraviolet light
- G01N21/75—Systems in which material is subjected to a chemical reaction, the progress or the result of the reaction being investigated
- G01N21/77—Systems in which material is subjected to a chemical reaction, the progress or the result of the reaction being investigated by observing the effect on a chemical indicator
- G01N21/78—Systems in which material is subjected to a chemical reaction, the progress or the result of the reaction being investigated by observing the effect on a chemical indicator producing a change of colour
Abstract
The invention discloses a kind of ecological permeable concrete detergent power analysis methods, including：Prepare ecological permeable concrete sample；Take road surface warp, Zn (NO3)2、Pb(NO3)2、NH4Cl、C6H12O6、KH2P4Reagent prepares the laboratory simulation rainwater of various concentration；Various concentration Simulated rainwater prepared by laboratory, uniformly through ecological permeable concrete, takes gained Simulated rainwater sample after filtering with certain water velocity；A certain concentration laboratory simulation rainwater is taken, uniformly through ecological permeable concrete, to take gained Simulated rainwater sample after filtering with different water velocities；Analyze SS, COD, TN, TP and NH of sample3N concentration obtains each contaminant removal efficiency.Pass through its detergent power of this method analysis ecological permeable concrete energy effective evaluation, can comprehensively, the analysis ecological permeable concrete detergent power of system, to judge the applicable region of a certain type ecological permeable concrete and scene, be conducive to select applicable ecological permeable concrete in practical applications.
Description
Technical field
The invention belongs to building material technical fields, more particularly to a kind of ecological permeable concrete detergent power analysis side
Method.
Background technology
With going deep into for Chinese Urbanization, the natural pervious surface such as many waters, meadow is mated formation generation by large area density
It replaces, ecological environment is destroyed, pollution condition getting worse.And ecological permeable concrete is as a kind of big emerging road material in gap
Material, can not only rapid osmotic pavement runoff rainwater reach and prevent surface gathered water, moreover it is possible to be effectively removed in road runoff and pollute
Object.Pervious concrete prevention runoff pollution and urban rainwater management in terms of excellent performance, by domestic and international material engineering,
The concern in the fields such as road engineering.
Include both at home and abroad the existing correlative study of detergent power to the properties of ecological permeable concrete, but in different researchers
And in the analysis result of practitioner, to the same evaluation for matching composition ecological permeable concrete detergent power, there is larger
Deviation.Other than raw material variance, lack a kind of unification, the analysis ecological permeable concrete detergent power method of system is main
Reason.There are still blank in systematically this index of evaluation ecological permeable concrete detergent power for the sector at this stage.
Invention content
The purpose of the present invention is to provide a kind of ecological permeable concrete detergent power analysis methods, not fast to solve
The problem of victory, comprehensive and effective evaluation ecological permeable concrete this index of detergent power.
Realize that the technical solution of the object of the invention is：
A kind of ecological permeable concrete detergent power analysis method, includes the following steps：
Step 1, scavenging material is added in pervious concrete formula, and it is mixed that ecological permeable is obtained after molding, standing, form removal, maintenance
Solidifying soil test specimen；
Step 2, road surface warp, Zn (NO are taken3)2、Pb(NO3)2、NH4Cl、C6H12O6、KH2P4It is prepared after reagent and clear water mixing
The laboratory simulation rainwater of various concentration；
Step 3, take the laboratory simulation rainwater of step 2 various concentration with a certain specific water velocity uniformly through ecological permeable
Concrete sample takes Simulated rainwater sample after filtering；
Step 4, take the laboratory simulation rainwater of a certain certain concentration of step 2 with different water velocities uniformly through ecological permeable
Concrete sample takes gained Simulated rainwater sample after filtering；
Step 5, Simulated rainwater sample after taking step 3 and step 4 to be filtered, analyzes its SS, COD, TN, TP and NH3- N is dense
Degree, obtains each contaminant removal efficiency.
Compared with prior art, the present invention its remarkable advantage：
（1）Method through the invention can quickly obtain the detergent power analysis report of ecological permeable concrete, to quickly sentence
Can medium well state pervious concrete be suitable for a certain scene.
（2）Method through the invention can comprehensively and systematically simulate distribution of each pollutant in road runoff rainwater
Situation.
（3）Method through the invention can systematically analyze the detergent power of ecological permeable concrete, and establish unification
Assay index pushes Industry Quick Development.
Present invention is further described in detail below in conjunction with the accompanying drawings.
Description of the drawings
Fig. 1 is the flow chart of the ecological permeable concrete detergent power analysis method of the present invention.
Fig. 2 is solid suspension removal rate result figure under different sewage concentration.
Fig. 3 is COD removal rate result figures under different sewage concentration.
Fig. 4 is ammonia nitrogen removal frank result figure under different sewage concentration.
Fig. 5 is nitrogen removal rate result figure under different sewage concentration.
Fig. 6 is total tp removal rate result figure under different sewage concentration.
Fig. 7 is solid suspension removal rate result figure under different water velocities.
Fig. 8 is COD removal rates under different water velocities.
Fig. 9 is ammonia nitrogen removal frank result figure under different water velocities.
Figure 10 is nitrogen removal rate result figure under different water velocities.
Figure 11 is total tp removal rate result figure under different water velocities.
Specific implementation mode
In order to illustrate technical scheme of the present invention and technical purpose, below in conjunction with the accompanying drawings and specific embodiment is the present invention
It is further to introduce.
In conjunction with Fig. 1, a kind of ecological permeable concrete detergent power analysis method of the invention includes the following steps：
Step 1 adds scavenging material in pervious concrete formula, and it is mixed that ecological permeable is obtained after molding, standing, form removal, maintenance
Solidifying soil test specimen；
Preferably, pervious concrete formula includes aggregate, water, water-reducing agent, reinforcing agent；Scavenging material includes vermiculite, perlite, fire
Mountain rock, diatomite, haydite, fine sand, slag, zeolite, tourmaline, flyash, gravel, clinker.
Preferably, ecological permeable concrete sample forming process is as follows：By aggregate, water, water-reducing agent, reinforcing agent and purification
Material is sufficiently stirred acquisition stirring material with 3 paddling process；Stirring is expected, a point multilayer feeds, and is plugged and pounded repeatedly after every layer of charging, and protect
Spacing, dynamics uniformity are demonstrate,proved, last to smooth out by hand, specimen molding.
It is furthermore preferred that ecological permeable concrete sample forming process is as follows：By aggregate, total water consumption 30% ~ 70% water into
The primary stirring of row, uniformly mixes, then puts into cement and reinforcing agent, carry out secondary agitation；And then put into water-reducing agent and
Remaining water carries out triple mixing, and stirring is expected, point 3 layers of charging plug and pound >=30 times, and ensure spacing, dynamics after every layer of charging
Uniformity, last to smooth out by hand, specimen molding, wherein the primary stirring, secondary agitation, triple mixing are all made of dual horizontal
Axis forced mixer；The mixing time once stirred be 30s, secondary agitation, triple mixing mixing time be 60s.
Preferably, to obtain meeting intensity requirement ecological permeable concrete, when maintenance, time of repose >=for 24 hours, care environments
For 20 ± 2 DEG C of temperature, relative humidity 95%RH or more.
Step 2 takes road surface warp, Zn (NO3)2、Pb(NO3)2、NH4Cl、C6H12O6、KH2P4Reagent is made after being mixed with water
The laboratory simulation rainwater of standby various concentration；
Preferably, the reagent taken is road surface warp, Zn (NO3)2、Pb(NO3)2、NH4Cl、C6H12O6、KH2P4It is clear to be placed in 30L
In water, each reagent amount of taking be respectively 14.4525g, 0.2677g, 0.0206g, 0.1900g, 8.0235g, 0.1656g 04 ~
0.6 times, 0.9 ~ 1.1 times, 2.4 ~ 2.6 times and 4.8 ~ 5.2 times, it is furthermore preferred that each reagent amount of taking be respectively 14.4525g,
0.5 times, 1 times, 2.5 times and 5 times of 0.2677g, 0.0206g, 0.1900g, 8.0235g, 0.1656g, is prepared 4 kinds not
With the laboratory simulation rainwater of concentration, 4 kinds of slight, moderate, severe, extra heavy degree practical pollution conditions can be effectively simulated.
Step 3, by the step 2 obtained various concentration laboratory simulation rainwater of configuration with certain water velocity uniformly through
Ecological permeable concrete takes Simulated rainwater sample after filtering；
Preferably, water velocity v=40mL/s ~ 55mL/s crosses water process and keeps supplying water uniformly, sampled when water sample outflow is stablized.
Step 4, a certain certain concentration laboratory simulation rainwater for taking step 2 configuration to obtain uniformly are led to different water velocities
Ecological permeable concrete is crossed, gained Simulated rainwater sample after filtering is taken；
Preferably, water velocity v is respectively 1 times, 2 times and 3 times of 40 ~ 55mL/s, more preferably 55mL/s, 110mL/s,
165mL/s crosses water process and keeps supplying water uniformly, sampled when water sample outflow is stablized.
Step 5 takes Simulated rainwater sample after the filtering that step 3 and step 4 obtain, respectively with gravimetric method, dichromate titration,
Potassium persulfate oxidation ultraviolet spectrophotometry, ammonium molybdate spectrophotometric method, ultraviolet spectrophotometry analyze its SS, COD, TN, TP
And NH3- N concentration obtains each contaminant removal efficiency；
Preferably, SS, COD, TN, TP and NH in water sample3- N concentration is respectively with gravimetric method, dichromate titration, potassium peroxydisulfate oxygen
Change ultraviolet spectrophotometry, ammonium molybdate spectrophotometric method, ultraviolet spectrophotometry to measure.
Step 6, each contaminant removal efficiency obtained using step 5 is ordinates, with a concentration of of laboratory simulation rainwater
Abscissa or using water velocity as abscissa, makees curve graph, analyzes the detergent power of the ecological permeable concrete sample.
Embodiment 1
A kind of ecological permeable concrete detergent power analysis method of the present invention, includes the following steps：
Three kinds of step 1, molding ecological permeable concrete samples：Selected haydite and diatomite weigh bone as two kinds of scavenging materials
Material, water, water-reducing agent, reinforcing agent and scavenging material, by aggregate（The 20% of one of which test specimen aggregate is changed to haydite）, 50% water
Primary stirring 30s is carried out, is uniformly mixed；Then by cement（The 10% of one of which test specimen cement is changed to diatomite）With reinforcing agent
Input carries out secondary agitation 60s；And then water-reducing agent and remaining 50% water are put into, triple mixing 60s is carried out, is sufficiently stirred
Stirring material is obtained afterwards；Stirring is expected, point 3 layers of charging plug and pound 30 times, and ensure spacing, dynamics uniformity, most after every layer of charging
It smoothes out by hand afterwards, specimen molding；Three kinds of ecological permeable concrete samples of coforming are denoted as 0 addition, addition haydite and add respectively
Add diatomaceous ecological permeable concrete sample.
Step 2 takes ecological permeable concrete sample made from step 1, form removal after being stood under room temperature for 24 hours, is put into standard and supports
Room maintenance is protected, care environments are 20 ± 2 DEG C of temperature, relative humidity 95%RH or more.
Step 3, the reagent taken are road surface warp, Zn (NO3)2、Pb(NO3)2、NH4Cl、C6H12O6、KH2P4It is placed in 30L
In clear water, each reagent amount of taking is respectively 14.4525g, 0.2677g, 0.0206g, 0.1900g, 8.0235g, 0.1656g
0.5 times, 1 times, 2.5 times and 5 times, the laboratory simulation rainwater of 4 kinds of various concentrations is prepared, can effectively simulate it is slight, in
Degree, severe, the extra heavy practical pollution condition of degree.
Step 4, the specific various concentration laboratory simulation rainwater for obtaining step 3 configuration are with the water velocity of v=55mL/s
Uniformly through ecological permeable concrete, Simulated rainwater sample after filtering is taken.
Step 5 takes Simulated rainwater sample after the filtering that step 4 obtains, respectively with gravimetric method, dichromate titration, persulfuric acid
Potassium oxidation ultraviolet spectrophotometry, ammonium molybdate spectrophotometric method, ultraviolet spectrophotometry analyze its SS, COD, TN, TP and
NH3- N concentration obtains each contaminant removal efficiency.
Embodiment 2
Only needed in the present embodiment step 3 in embodiment 1 the 1st kind of concentration experiment room configure rainwater, by step 4 with 4 kinds of differences
Concentration rainwater is replaced with as control variable using 3 kinds of water velocities as control variable, other steps are consistent, herein specific step
Rapid process repeats no more.
As shown in Fig. 2 ~ 11, test result shows experimental result：
The shadow of the substantially not contaminated object concentration of solid suspension removal rate for the ecological permeable concrete that no scavenging material adds
It rings.And to having added haydite and diatomaceous ecological permeable concrete, to the purification efficiency of solid suspension generally with
The rising of concentration of wastewater and improve；Ecological permeable concrete is relatively low in pollutant concentration to the removal rate of COD in Runoff contaminants
Shi Xiaoguo is more apparent, and when pollutant concentration is higher, effect is relatively low, and the removal rate of total phosphorus by concentration of wastewater effect tendency not
Obviously；The removal rate of total nitrogen is generally as the promotion of pollutant concentration shows overall downward trend.Ecological permeable concrete
The removal rate of total phosphorus is in rising trend with the promotion of pollutant concentration.Concentration of wastewater be 1 times and 2.5 times when difference compared with
It is small, but then have apparent differentiation when 0.5 times and 5 times.
During improving water speed, each pollutants removal rate all shows the situation of decline, especially pollutant
The removal rate decline of middle ammonia nitrogen is particularly evident, and for the ecological permeable concrete that no scavenging material adds, slippage is reachable
95.1%.And although the removal rate of total phosphorus, total nitrogen also has decline, overall fall is little, minimum only 23.3%.This be because
For, with the promotion for crossing water speed, ecological permeable concrete does not have each pollutant in time enough absorption effluent, and originally
The pollutant being attracted in test specimen washes away lower swept along in larger water velocity and takes test specimen out of, and it is mixed to result in ecological permeable
The pollutants removal rate of solidifying soil test specimen is reduced with the promotion of runoff water velocity.
By above-mentioned analysis, this method can be unified, systematically analyze ecological permeable concrete detergent power, it is possible to determine that
The applicable region of a certain type ecological permeable concrete and scene are conducive to select applicable ecological permeable in practical applications mixed
Solidifying soil.
Claims (9)
1. ecological permeable concrete detergent power analysis method, which is characterized in that include the following steps：
Step 1, scavenging material is added in pervious concrete formula, and it is mixed that ecological permeable is obtained after molding, standing, form removal, maintenance
Solidifying soil test specimen；
Step 2, road surface warp, Zn (NO are taken3)2、Pb(NO3)2、NH4Cl、C6H12O6、KH2P4It is prepared not after reagent and water mixing
With the laboratory simulation rainwater of concentration；
Step 3, take the laboratory simulation rainwater of step 2 various concentration with a certain specific water velocity uniformly through ecological permeable
Concrete sample takes Simulated rainwater sample after filtering；
Step 4, take the laboratory simulation rainwater of a certain certain concentration of step 2 with different water velocities uniformly through ecological permeable
Concrete sample takes gained Simulated rainwater sample after filtering；
Step 5, Simulated rainwater sample after taking step 3 and step 4 to be filtered, analyzes its SS, COD, TN, TP and NH3- N is dense
Degree, obtains each contaminant removal efficiency.
2. analysis method as described in claim 1, which is characterized in that in step 1, pervious concrete formula include aggregate, water,
Water-reducing agent, reinforcing agent；Scavenging material includes vermiculite, perlite, volcanic rock, diatomite, haydite, fine sand, slag, zeolite, electrical
Stone, flyash, gravel, clinker.
3. analysis method as described in claim 1, which is characterized in that in step 1, ecological permeable concrete sample forming process
It is as follows：Aggregate, water, water-reducing agent, reinforcing agent and scavenging material are sufficiently stirred acquisition stirring material with 3 paddling process；It will stirring
Material, a point multilayer feeds, and is plugged and pounded repeatedly after every layer of charging, and ensure spacing, dynamics uniformity, last to smooth out by hand, test specimen at
Type.
4. analysis method as described in claim 1, which is characterized in that in step 1, when maintenance, time of repose >=for 24 hours, maintenance
Environment is 20 ± 2 DEG C of temperature, relative humidity 95%RH or more.
5. analysis method as described in claim 1, which is characterized in that in step 2, take road surface warp, Zn (NO3)2、Pb
(NO3)2、NH4Cl、C6H12O6、KH2P4Reagent is placed in 30L water, each reagent amount of taking be respectively 14.4525g, 0.2677g,
0.4 ~ 0.6 times, 0.9 ~ 1.1 times, 2.4 ~ 2.6 times and 4.8 ~ 5.2 times of 0.0206g, 0.1900g, 8.0235g, 0.1656g,
Prepare the laboratory simulation rainwater of 4 kinds of various concentrations.
6. analysis method as described in claim 1, which is characterized in that in step 3, a certain specific water velocity v values are
40mL/s~55mL/s。
7. analysis method as described in claim 1, which is characterized in that in step 4, different water velocity v is respectively 40 ~
1 times, 2 times and 3 times of 55mL/s.
8. analysis method as described in claim 1, which is characterized in that in step 4, different water velocity v is respectively 55mL/
s、110mL/s、165mL/s。
9. analysis method as described in claim 1, which is characterized in that in step 5, respectively with gravimetric method, dichromate titration, mistake
Potassium sulfate aoxidize ultraviolet spectrophotometry, ammonium molybdate spectrophotometric method, ultraviolet spectrophotometry analysis SS, COD of sample, TN,
TP and NH3- N concentration.
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Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109596554A (en) * | 2019-01-24 | 2019-04-09 | 武汉理工大学 | A kind of detection device and its application method of pervious concrete water purification characteristic |
| CN111879679A (en) * | 2020-08-03 | 2020-11-03 | 安徽工业大学 | Device for simulating permeable concrete pavement blockage and rainwater purification monitoring and using method thereof |
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| CN115286329A (en) * | 2022-08-15 | 2022-11-04 | 常熟市江华新型建筑材料有限公司 | Self-cleaning brick with purification function and preparation method and application thereof |
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