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A kind of multi-stage purification type grass planting ditch special for green sponge and its construction method

A grass-planting ditch, one-level purification technology, applied in chemical instruments and methods, water/sewage multi-stage treatment, filtration treatment, etc., can solve the problems that the grass-planting ditch cannot be purified at the same time, the grass-planting ditch cannot be quickly discharged, and the cost of excessive rainwater is high. The effect of extending the length of surface runoff, quick and easy construction, and simple structure

Active Publication Date: 2022-07-05
JIANGSU LONG LEAPING ENG DESIGN
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0004] The purpose of the present invention is to provide a multi-stage purification type grass-planting ditch dedicated to green sponge, which is used to solve the technical problems that the traditional grass-planting ditch cannot purify the grass-planting ditch and seepage rainwater at the same time, and cannot quickly discharge excess rainwater, and the technical problems of complex construction and high cost

Method used

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  • A kind of multi-stage purification type grass planting ditch special for green sponge and its construction method
  • A kind of multi-stage purification type grass planting ditch special for green sponge and its construction method
  • A kind of multi-stage purification type grass planting ditch special for green sponge and its construction method

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Embodiment 1

[0053] like figure 1 and figure 2 As shown, the first filtering zone includes a planting soil layer 15 , a sand layer 16 and a zeolite layer 17 sequentially from top to bottom, and the base 112 of the baffle 11 is embedded in the zeolite layer 17 . Rainwater in city roads according to figure 1 The arrow below indicates entering the grass-planting ditch, the water in the seepage part enters the baffle 11 after being filtered by the above three layers, and finally the relatively clean water is removed from the Figure 4 The water collection pipe 22 is shown leading into the city drain.

[0054] Further, in a specific embodiment of the present invention, the second filter area includes a plurality of second filter areas, and different second filter areas have different particle sizes according to the order of the water flow. diameter from thick to thin. Because the water flow has a certain route in the water flow area, the water flow is gradually filtered with the flow of th...

Embodiment 2

[0063] A construction method for a multi-stage purification type grass planting ditch dedicated to green sponges, comprising the following steps:

[0064] Step 1. Dig a trapezoidal ditch with a wide upper and a lower narrow on both sides of the road in the area to be constructed, clear the bottom and tamp it, and set a water collection pipe 22 at the bottom of the ditch close to the outflow area 2;

[0065] Step 2, spread a layer of zeolite on the tamped bottom surface of the trench, then place the base 112 of the baffle plate 11 on the zeolite, and use a water stop tape between the baffle plate 11 and the baffle plate 11 to adhere and form a water flow channel 1, Then, a layer of zeolite is laid on the base 112, so that the base 112 of the baffle 11 is pressed into the zeolite layer 17; a sand layer 16 is laid on the zeolite basis, and the two are separated by a permeable geotextile; the sand layer 16 A planting soil layer 15 is laid on the foundation to plant turf; thus form...

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Abstract

The invention provides a multi-stage purification type grass planting ditch for green sponge and a construction method thereof. The grass planting channel is divided into an upper water flow area and a lower infiltration area through vegetation; the infiltration area is a vertically distributed first filter The water flow area is also provided with a baffle plate and a second filter area, and the baffle plate and the grass-planting ditch wall cooperate to divide the width direction of the grass-planting ditch into a plurality of water flow channels; the second filter area is arranged at the head and tail of the two water flow channels The connection point; the outlet of the flow channel is arranged in the outflow area, and an overflow wall is arranged between a water flow channel closest to the road surface and the outflow area to separate the two; the baffle includes a base and a partition, and the base It is buried in the infiltration area, and the baffle is exposed to the top of the water flow area; the baffle is hollow as a whole, and the surface of the base is provided with infiltration holes to communicate with the interior of the baffle; Below the flow area, and the water collecting pipe is buried at a height equal to or lower than the base of the baffle.

Description

technical field [0001] The invention relates to sponge city technology, in particular to a multi-stage purification type grass-planting ditch for green sponges and a construction method thereof. Background technique [0002] With the development of urbanization, the number of impervious pavements in cities increases, which is prone to problems such as urban waterlogging and excessive flood peak runoff. At the same time, rainwater runoff carries a large amount of pollutants into the municipal pipe network and increases the downstream organic matter load. Therefore, the construction of sponge cities is of great significance. [0003] Grass-planting ditch refers to the surface ditch with vegetation, which is suitable for the surrounding of impervious surfaces such as roads, squares and parking lots, urban roads and urban green spaces, etc. It can also be used as a pretreatment for low-impact development facilities such as bioretention facilities and wet ponds. facility. The gr...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): C02F9/14E03F3/04E03F3/06E03F3/02
CPCC02F1/001C02F3/32E03F3/04E03F3/06E03F3/02C02F2103/001
Inventor 宗媛张瑞斌刘清泉李澄周乃周舟王乐阳李婧
Owner JIANGSU LONG LEAPING ENG DESIGN
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