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Improved filler for artificial rainwater rapid infiltration facility and preparation method of improved filler

A rainwater and artificial technology, applied in chemical instruments and methods, water/sewage treatment, water/sludge/sewage treatment, etc., can solve the problems of groundwater impact, poor water purification ability, etc., and achieve the effect of improving the purification effect

Inactive Publication Date: 2021-07-27
XIAN UNIV OF TECH
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

At present, the infiltration facilities commonly used in my country are mostly filled with sand and gravel. Natural river sand is the most widely used infiltration medium because of its low price and good permeability. Poor water purification ability will have a certain impact on groundwater

Method used

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  • Improved filler for artificial rainwater rapid infiltration facility and preparation method of improved filler
  • Improved filler for artificial rainwater rapid infiltration facility and preparation method of improved filler
  • Improved filler for artificial rainwater rapid infiltration facility and preparation method of improved filler

Examples

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Effect test

Embodiment 1

[0031] The present invention is a method for preparing improved packing for artificial rainwater quick-seepage facilities, which consists of the following components by volume percentage, 80% to 95% of main packing and 5% to 20% of improving agent, and the main packing is natural river sand;

[0032] According to the particle size, natural river sand can be divided into two types: coarse sand (type I, particle size 0.63-2 mm) and medium-coarse sand (type II, particle size 0.315-2 mm).

[0033] Different modified fillers are obtained by mixing natural river sand as the main filler with zeolite, blast furnace slag, sponge iron, etc. as modifiers in different proportions. The specific ratio scheme is shown in Table 1.

[0034] The proportioning scheme (volume ratio) of table 1 artificial filler

[0035]

[0036]

[0037] Using the artificial rapid infiltration facility to improve fillers 3# to 18#, in the simulated rainwater runoff test using tap water configuration, the c...

Embodiment 2

[0042] The present invention is a kind of preparation method of the improved filling material that is used for artificial rainwater quick-seepage facility, constructs rain artificial rainwater quick-seepage facility on the spot, adopts the structural form (6.5m) of 3m reinforced concrete infiltration pool+two 6m long glass steel pipe infiltration wells combination The following is Zhongsha).

[0043] The reinforced concrete percolation tank is filled with 90% coarse sand (0.630-2mm) + 5% sponge iron (1-2mm) + 5% zeolite (1-2mm) (volume ratio) as artificial filler.

[0044] The groundwater in the study area is mainly recharged by the centralized infiltration rainfall of the artificial rainwater rapid infiltration facilities with improved filling rain. There is abundant rainfall in the study area during the rainy season, and the response of groundwater depth to rainfall presents an obvious "saw-toothed" shape, and the concentrated infiltration in the rainy season leads to a sign...

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Abstract

The invention discloses an improved filler for an artificial rainwater rapid infiltration facility. The improved filler consists of the following components in percentage by volume: 80-95% of a main filler and 5-20% of a modifier, wherein the sum of the volume percentages of the components is 100%, the main filler is three types of natural river sand, the particle size of the natural river sand is not less than 0.25 mm, and the modifier is any one or more of sponge iron, blast furnace slag, zeolite, medical stone, pelelith and ceramsite. By using the improved filler provided by the invention, pollutants in rainwater runoff can be effectively removed through the purification effect of the improved filler, and rainwater can be infiltrated through an artificial rapid infiltration facility to supplement underground water; and natural river sand with different particle sizes and various modifiers are optimally combined, so that the purification effect of the filler on pollutants in rainwater runoff is improved on the premise of ensuring the permeation rate of the filler, and the filler is simple and flexible in design and high in applicability.

Description

technical field [0001] The invention belongs to the technical field of filler preparation, and in particular relates to an improved filler used for artificial rainwater rapid infiltration facilities, and also relates to a preparation method of the improved filler. Background technique [0002] With the continuous improvement of climate change and urbanization level, the expansion of construction land has greatly increased the rainwater runoff and flood peak flow in urbanized areas, and the phenomenon of "city looking at the sea" is not uncommon. The urban drainage system generally includes three subsystems: large drainage system, small drainage system and micro drainage system. Micro-drainage systems generally refer to small-scale, decentralized rainwater facilities based on the concept of low-impact development; small drainage systems generally refer to urban rainwater pipes and canal systems; large drainage systems are mainly used to solve excessive rainwater that exceeds ...

Claims

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Application Information

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IPC IPC(8): C04B14/06C02F1/58C02F1/62
CPCC04B14/068C02F1/62C02F1/58
Inventor 李家科李怀恩蒋春博赵瑞松马越姬国强郭超
Owner XIAN UNIV OF TECH
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