CN113173720A - Improved filler for artificial rainwater rapid infiltration facility and preparation method thereof - Google Patents
Improved filler for artificial rainwater rapid infiltration facility and preparation method thereof Download PDFInfo
- Publication number
- CN113173720A CN113173720A CN202110330987.3A CN202110330987A CN113173720A CN 113173720 A CN113173720 A CN 113173720A CN 202110330987 A CN202110330987 A CN 202110330987A CN 113173720 A CN113173720 A CN 113173720A
- Authority
- CN
- China
- Prior art keywords
- filler
- artificial
- rainwater
- modifier
- improved
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Pending
Links
Classifications
-
- C—CHEMISTRY; METALLURGY
- C04—CEMENTS; CONCRETE; ARTIFICIAL STONE; CERAMICS; REFRACTORIES
- C04B—LIME, MAGNESIA; SLAG; CEMENTS; COMPOSITIONS THEREOF, e.g. MORTARS, CONCRETE OR LIKE BUILDING MATERIALS; ARTIFICIAL STONE; CERAMICS; REFRACTORIES; TREATMENT OF NATURAL STONE
- C04B14/00—Use of inorganic materials as fillers, e.g. pigments, for mortars, concrete or artificial stone; Treatment of inorganic materials specially adapted to enhance their filling properties in mortars, concrete or artificial stone
- C04B14/02—Granular materials, e.g. microballoons
- C04B14/04—Silica-rich materials; Silicates
- C04B14/06—Quartz; Sand
- C04B14/068—Specific natural sands, e.g. sea -, beach -, dune - or desert sand
-
- C—CHEMISTRY; METALLURGY
- C02—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
- C02F—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
- C02F1/00—Treatment of water, waste water, or sewage
- C02F1/58—Treatment of water, waste water, or sewage by removing specified dissolved compounds
-
- C—CHEMISTRY; METALLURGY
- C02—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
- C02F—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
- C02F1/00—Treatment of water, waste water, or sewage
- C02F1/58—Treatment of water, waste water, or sewage by removing specified dissolved compounds
- C02F1/62—Heavy metal compounds
Landscapes
- Engineering & Computer Science (AREA)
- Chemical & Material Sciences (AREA)
- Organic Chemistry (AREA)
- Ceramic Engineering (AREA)
- Life Sciences & Earth Sciences (AREA)
- Hydrology & Water Resources (AREA)
- Environmental & Geological Engineering (AREA)
- Water Supply & Treatment (AREA)
- Civil Engineering (AREA)
- Materials Engineering (AREA)
- Structural Engineering (AREA)
- Sewage (AREA)
Abstract
The invention discloses an improved filler for an artificial rainwater rapid infiltration facility, which comprises the following components by volume percent, wherein the main filler accounts for 80-95%, the modifier accounts for 5-20%, and the sum of the volume percentages of the components is 100%. The main filler is three types of natural river sand, and the particle size of the natural river sand is not less than 0.25 mm. The modifier is one or more of sponge iron, blast furnace slag, zeolite, medical stone, volcanic rock and ceramsite. By using the improved filler, pollutants in the rainwater runoff can be effectively removed through the purification effect of the improved filler, rainwater can be infiltrated through an artificial rapid infiltration facility, and underground water is supplemented. The invention utilizes the optimized combination of the natural river sand with different particle sizes and various modifying agents to improve the purifying effect of the natural river sand on pollutants in the rainwater runoff on the premise of ensuring the permeation rate of the filler, and the design is simple and flexible and has strong applicability.
Description
Technical Field
The invention belongs to the technical field of filler preparation, and particularly relates to an improved filler for an artificial rainwater rapid infiltration facility, and a preparation method of the improved filler.
Background
Along with the continuous improvement of climate change and urbanization level, the expansion of construction land greatly increases the rainwater runoff and the flood peak flow in urbanization areas, and the phenomenon of 'urban sea-seeing' is common. The urban drainage system generally comprises three subsystems of a large drainage system, a small drainage system and a micro drainage system. Micro-drainage systems generally refer to small-scale, distributed rainwater facilities based on low-impact development concepts; the small drainage system generally refers to an urban rainwater pipe system; the large drainage system is mainly used for solving the overproof rainwater exceeding the processing capacity of the first two systems. The Chinese urban waterlogging prevention and treatment system has the following problems: lack of micro drainage systems, low standards for small drainage systems, and lack of large drainage systems.
The artificial rapid infiltration facility is mainly suitable for buildings and buildings in communities, roads and peripheral green lands of parking lots, comprises a plurality of forms of infiltration pits, infiltration channels and infiltration wells, and is used for pretreating rainwater through facilities such as grass planting ditches, vegetation buffer zones and the like before the rainwater is infiltrated through the rapid infiltration facility. At present, the percolation facilities commonly used in China are filled with sand and gravel, natural river sand is the most widely used percolation medium due to low price and good permeability, but only can quickly permeate rainwater runoff, but has poor water quality purification capacity, and can affect underground water to a certain extent. By replacing or adjusting the particle size of the main filler in the filling layer of the rapid-permeation facility and adding a proper amount of functional materials, the permeation rate can be ensured, and the effluent quality can be improved.
Disclosure of Invention
The invention aims to provide an improved filler for an artificial rainwater rapid infiltration facility, which improves the purification capacity and the infiltration capacity of the filler.
The invention also aims to provide a preparation method of the improved filler for the artificial rainwater rapid-infiltration facility.
The invention adopts the technical scheme that the improved filler for the artificial rainwater rapid infiltration facility comprises the following components by volume percent, wherein 80-95% of the main filler and 5-20% of the modifying agent are contained, and the sum of the volume percent of the above components is 100%.
The present invention is also characterized in that,
the main filler is three types of natural river sand, and the particle size of the natural river sand is not less than 0.25 mm.
The modifier is one or more of sponge iron, blast furnace slag, zeolite, medical stone, volcanic rock and ceramsite.
The particle size of the modifying agent is 1-5 mm.
The invention adopts another technical scheme that a preparation method of an improved filler for an artificial rainwater rapid infiltration facility comprises the following specific steps: respectively measuring according to volume percentage: 80-95% of main filler and 5-20% of modifier, wherein the sum of the volume percentages of the components is 100%; the types and the proportions of the main filler and the modifier are determined according to the quality of the incoming water and the main functions of facilities; then, the filler is uniformly mixed to obtain the improved filler of the artificial rainwater rapid infiltration facility; when the method is applied specifically, the thickness of the filler is determined according to factors such as the water collection quality, the water quantity, the depth of the air-entrapping zone in the area and the like of the catchment area.
The beneficial effect of the invention is that,
pollutants in the rainwater runoff can be effectively removed through the purification effect of the improved filler, and rainwater can be infiltrated through the artificial rapid infiltration facility to supplement underground water. The invention utilizes the optimized combination of the natural river sand with different particle sizes and various modifying agents to improve the purification effect of pollutants in the rainwater runoff on the premise of ensuring the permeation rate of the filler.
Detailed Description
The present invention will be described in detail with reference to the following embodiments.
The invention relates to an improved filler for an artificial rainwater rapid infiltration facility, which comprises the following components by volume percent, wherein 80-95% of a main filler and 5-20% of a modifier, and the sum of the volume percentages of the components is 100%;
the main filler is natural river sand;
natural river sand is divided into three types as required: type I (grain diameter is more than 0.25mm) is used for treating the road surface runoff with light pollution;
type II (particle size > 0.50mm) for treating green land runoff;
type III (grain size is more than 0.50mm) is used for treating roof runoff;
the particle size of the modifying agent is 1-5 mm; the modifier is one or more of sponge iron, blast furnace slag, zeolite, medical stone, volcanic rock and ceramsite;
the invention relates to a preparation method of an improved filler for an artificial rainwater rapid infiltration facility, which comprises the following steps:
weighing the following components in percentage by volume: 80-95% of main filler and 5-20% of modifier, wherein the sum of the volume percentages of the components is 100%; then the mixture is mixed evenly, and the improved filler of the artificial rainwater rapid infiltration facility can be obtained.
In the invention, the rapid infiltration is used as the improved filler with the main function, and the blending volume ratio of the modifying agent is 5-10 percent; the modified filler which takes pollutant purification as a main function, and the mixing proportion of the modifier is 10-20%; the improved filler comprehensively considering the lower seepage and the purification of pollutants, and the mixing proportion of the modifier is 5 to 15 percent.
In the invention, the improved filler with the main function of rapid infiltration is adopted, and the grain diameter of the modifier is not more than 5 mm; the particle size of the modifier is not less than 1 mm; the particle size of the modifier is not less than 1mm, which is an improved filler for comprehensively considering the infiltration and the purification of pollutants.
In the invention, rapid infiltration is taken as a main function, and volcanic rock, ceramsite or blast furnace slag is selected as a modifier; the main function of purifying pollutants is sponge iron, zeolite or medical stone as a modifier; and (3) comprehensively considering infiltration and pollutant purification, and selecting ceramsite, sponge iron or zeolite as a modifier.
In the present invention, the modified filler has a downward penetration rate of 10-5～10-3m/s. For treatment roomsThe penetration rate of the improved filler of the surface runoff is more than or equal to 10-3m/s; the permeation rate of the improved filler for treating the runoff of the green land is more than or equal to 10-4m/s; the permeation rate of the improved filler for treating the runoff of the slightly polluted pavement is more than or equal to 10-5m/s。
In the invention, the thickness of the filler is determined according to factors such as the water collection quality, the water quantity, the depth of the air-entrapping zone in the region and the like of the catchment area, the distance from the bottom of the facility to the seasonal highest underground water level or rock layer is more than 1m, and the thickness of the filler is generally more than 2.5 m.
In the invention, the improved filler added with the sponge iron has better TP and Zn removing effect; the modified filler added with the zeolite has better TN removal effect; the improved filler added with the blast furnace slag has better effect of removing Cu.
The improved filler disclosed by the invention has the advantages that the infiltration rate of the improved filler is ensured by the natural river sand, the purifying effect of the improved filler on pollutants can be improved by the modifier, and the waterlogging and the rainwater runoff pollution can be relieved to a certain extent and purified. Pollutants in the rainwater runoff can be effectively removed through the purification effect of the improved filler, and rainwater can be infiltrated through the artificial rapid infiltration facility to supplement underground water. The invention utilizes the optimized combination of the natural river sand with different particle sizes and various modifying agents to improve the purifying effect of the natural river sand on pollutants in the rainwater runoff on the premise of ensuring the permeation rate of the filler, and the design is simple and flexible and has strong applicability.
Example 1
The invention relates to a preparation method of an improved filler for an artificial rainwater rapid infiltration facility, which comprises the following components by volume percentage, wherein the main filler is 80-95 percent and the modifying agent is 5-20 percent, and the main filler is natural river sand;
the natural river sand is divided into coarse sand (type I, the particle size is 0.63-2 mm) and medium coarse sand (type II, the particle size is 0.315-2 mm) according to the particle size.
Mixing natural river sand as main filler and zeolite, blast furnace slag, sponge iron and the like as modifier according to different proportions to obtain different modified fillers. The specific formulation is shown in table 1.
TABLE 1 proportioning scheme (volume ratio) of artificial fillers
The modified filler 3# to 18# of the artificial rapid infiltration facility is utilized, and in a simulated rainwater runoff test configured by using tap water, the rainwater runoff purification effect of different incoming water conditions is considered to be compared with that of coarse sand (1#) and medium coarse sand (2#) which are not added with a modifying agent. The contaminant purification effect and the filler infiltration rate are shown in Table 2. The comprehensive table shows that the removal effect and the infiltration rate of the modified filler 3# to 18# on pollutants are obviously superior to those of the filler of the traditional artificial rapid infiltration facility without adding the modifying agent. The permeability coefficients of the 18 fillers are all 10-4～10-3m/s.
TABLE 2 comparison table of the removal effect of filler pollutants in two types of manual rapid infiltration facilities
Note: the comprehensive reduction rate of the pollutant load is the average value of the reduction rate of the filler to each pollutant load.
Example 2
The invention relates to a preparation method of an improved filler for an artificial rainwater rapid infiltration facility, which is characterized in that the artificial rainwater rapid infiltration facility is constructed on site, and a structural form of combining a 3m reinforced concrete infiltration tank and two 6m long glass steel tube infiltration wells (the sand is below 6.5 m) is adopted.
The reinforced concrete infiltration tank is filled with 90% of coarse sand (0.630-2 mm), 5% of sponge iron (1-2 mm) and 5% of zeolite (1-2 mm) (volume ratio) as artificial filler.
Underground water in a research area is mainly supplemented by concentrated infiltration rainfall by an improved filler rain artificial rainwater rapid infiltration facility, and the buried depth of the underground water level in rainy seasons (8-10 months) is obviously less than that in non-rainy seasons (1-3 months). The research area in rainy season has abundant rainfall, the response of the underground water burial depth to rainfall presents obvious zigzag, and the underground water level burial depth is obviously increased before construction through a large amount of concentrated infiltration in rainy season, and the water level change range is within 0.5-1.5 meters.
The invention relates to an improved filler for an artificial rainwater rapid infiltration facility, which is prepared by adding modifiers with different proportions into main fillers according to different treated incoming water (roof runoff, green runoff and light-polluted pavement runoff) and main functions (rapid infiltration is taken as the main function, pollutant purification is taken as the main function, infiltration and pollutant purification are comprehensively considered), and the method has wide applicability and operability; the improved filler can effectively improve the control effect of the artificial rainwater rapid infiltration facility on rainwater runoff pollution and urban rainstorm flood disasters.
Claims (5)
1. The improved filler for artificial rain water fast-permeating facility features that it consists of main filler 80-95 vol% and modifier 5-20 vol%, and the total of the said components is 100 vol%.
2. An improved filler for an artificial rainwater rapid infiltration facility according to claim 1, wherein the main filler is natural river sand, and the particle size of the natural river sand is not less than 0.25 mm.
3. The improved filler for the artificial rainwater rapid-infiltration facility according to claim 1, wherein the modifier is any one or more of sponge iron, blast furnace slag, zeolite, medical stone, volcanic rock and ceramsite.
4. The improved filler for the artificial rainwater rapid infiltration facility according to claim 3, wherein the particle size of the modifier is between 1 and 5 mm.
5. A preparation method of the improved filler for the artificial rainwater rapid-infiltration facility according to any one of claims 1 to 4, is characterized by comprising the following steps:
weighing the following components in percentage by volume: 80-95% of main filler and 5-20% of modifier, wherein the sum of the volume percentages of the components is 100%; then the mixture is mixed evenly, and the improved filler of the artificial rainwater rapid infiltration facility can be obtained.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202110330987.3A CN113173720A (en) | 2021-03-29 | 2021-03-29 | Improved filler for artificial rainwater rapid infiltration facility and preparation method thereof |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202110330987.3A CN113173720A (en) | 2021-03-29 | 2021-03-29 | Improved filler for artificial rainwater rapid infiltration facility and preparation method thereof |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN113173720A true CN113173720A (en) | 2021-07-27 |
Family
ID=76922379
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202110330987.3A Pending CN113173720A (en) | 2021-03-29 | 2021-03-29 | Improved filler for artificial rainwater rapid infiltration facility and preparation method thereof |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN113173720A (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN115849550A (en) * | 2022-10-20 | 2023-03-28 | 同济大学 | Low-energy-consumption segmented artificial rapid infiltration system for enhancing sewage treatment efficiency of villages and towns |
Citations (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN111357609A (en) * | 2020-03-19 | 2020-07-03 | 重庆文理学院 | Sponge urban formula engineering soil and bioretention system |
| CN112537916A (en) * | 2020-11-17 | 2021-03-23 | 安徽瑞和新材料有限公司 | Spreading type iron-carbon composite filler powder for concrete and preparation method thereof |
-
2021
- 2021-03-29 CN CN202110330987.3A patent/CN113173720A/en active Pending
Patent Citations (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN111357609A (en) * | 2020-03-19 | 2020-07-03 | 重庆文理学院 | Sponge urban formula engineering soil and bioretention system |
| CN112537916A (en) * | 2020-11-17 | 2021-03-23 | 安徽瑞和新材料有限公司 | Spreading type iron-carbon composite filler powder for concrete and preparation method thereof |
Non-Patent Citations (2)
| Title |
|---|
| 李来燕: "改良生物滞留设施对磷素净化性能的试验研究", 《中国学位论文全文数据库》, 25 September 2019 (2019-09-25), pages 2 * |
| 赵瑞松: "典型LID设施填料优化设计研究", 《中国学位论文全文数据库》, 25 September 2019 (2019-09-25), pages 2 * |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN115849550A (en) * | 2022-10-20 | 2023-03-28 | 同济大学 | Low-energy-consumption segmented artificial rapid infiltration system for enhancing sewage treatment efficiency of villages and towns |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN101012643B (en) | Construction method of ecological bank slope for effectively and quickly removing area-source pollution | |
| CN107100261A (en) | A kind of novel rainwater is detained filtration system | |
| CN106930387A (en) | The sponge urban rainwater collection reclaiming system and processing method of a kind of one residential | |
| CN101190833A (en) | Water permeable concrete and manufacturing method thereof | |
| CN204875416U (en) | Porous pavement structure | |
| CN207211336U (en) | A kind of novel rainwater is detained filtration system | |
| CN105481029B (en) | It is a kind of to be used for the method and device that various heavy and polycyclic aromatic hydrocarbon collaboration remove in runoff rainwater | |
| CN108726955A (en) | A kind of pervious concrete and preparation method thereof | |
| CN106746229A (en) | A kind of Drain contamination for river channel mouthful cuts the purified in situ processing method and system of dirty water conservancy diversion | |
| CN107034767A (en) | A kind of full pervious concrete pavement structure of regeneration aggregate and its construction method | |
| CN110818196A (en) | System and method for purifying and recycling surface runoff water resource | |
| CN106544941A (en) | A kind of porous pavement with purification function | |
| CN205398233U (en) | Enhanced nitrogen removal rainwater garden who is fit for high ground water level of high cohesive soil earth | |
| Abustan et al. | Review of permeable pavement systems in Malaysia conditions | |
| CN113173720A (en) | Improved filler for artificial rainwater rapid infiltration facility and preparation method thereof | |
| CN205258063U (en) | Be arranged in multiple heavy metal of runoff rainwater and polycyclic aromatic hydrocarbons remove device in coordination | |
| CN206203996U (en) | A kind of shore protection system for riverway water quality purification | |
| CN105484125B (en) | A kind of step of Collection utilization rainwater | |
| CN209759918U (en) | Road surface structure suitable for sponge city | |
| CN211447161U (en) | Sponge type industrial site rainwater drainage system | |
| CN108409027A (en) | A kind of biological delaying basin for strengthening road Initial Runoff denitrogenation dephosphorizing process | |
| CN107021675A (en) | A kind of environmental haydite pervious asphalt concrete and preparation method thereof | |
| CN107044081A (en) | Environmental street drainage structure | |
| CN203866664U (en) | Permeable concrete pavement system with permeation and drainage guide pipes | |
| CN204727667U (en) | A kind of biological arresting device for the treatment of rainwater |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| PB01 | Publication | ||
| PB01 | Publication | ||
| SE01 | Entry into force of request for substantive examination | ||
| SE01 | Entry into force of request for substantive examination | ||
| RJ01 | Rejection of invention patent application after publication |
Application publication date: 20210727 |
|
| RJ01 | Rejection of invention patent application after publication |