Urban rainwater recycling reutilization system based on lava rocks

A technology of volcanic rock and recycling, applied in the field of urban rainwater recycling and reuse systems, can solve the problems of low survival rate of roof plants, long water storage time, limited technical effects, etc., achieve obvious economic and environmental benefits, and improve purification The effect, the effect of the overall structure is simple

Active Publication Date: 2016-07-13
TONGJI UNIV
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  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, the current roof greening structure mainly has the following problems in the actual design and use process: 1) the survival rate of roof plants is low, especially in the dry season, which requires a lot of energy to take care of; 2) most of the rainwater is difficult to store in a small amount of soil, and most 3) some existing rainwater storage systems are difficult to supply indoor domestic water with the lowest water quality requirements, such as flushing of washrooms, due to long water storage time, poor rainwater quality, and poor water quality; 4) There are few comprehensive systems that combine roof greening technology with rainwater harvesting technology
The technical solution disclosed in this patent uses volcanic stones as raw materials to construct the water storage layer of the roof waterlogging prevention and greening project. By adding a volcanic stone water storage layer to the roof greening to reduce the impact of urban waterlogging, although the flood control and drainage function of the roof greening can be realized , but its technical effect is limited, and it cannot realize the filtration, collection and reuse of rainwater, and needs further improvement

Method used

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  • Urban rainwater recycling reutilization system based on lava rocks
  • Urban rainwater recycling reutilization system based on lava rocks
  • Urban rainwater recycling reutilization system based on lava rocks

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0037] Such as figure 1 As shown, a volcanic rock-based urban rainwater resource reuse system is set on the flat roof of the building. The system includes a composite vegetation area 1, and the rainwater arranged around the composite vegetation area 1 in turn from the inside to the outside The confluence area 2, the retaining wall 3, the pedestrian area 4, and the water collection area 11 connected to the rainwater confluence area 2 through roof water collection pipes. Such as figure 2 As shown, the composite vegetation area 1 includes a water-resistant layer 5, a drainage layer 6, a coarse filter layer 7, a water storage layer 8, a planting substrate layer 9, and a vegetation layer 10 arranged sequentially from bottom to top, and the drainage layer 6 passes through the roof drain pipe. It communicates with the catchment area 11.

[0038] Wherein, the aquifer 8 is formed by mixing the volcanic rock with a particle diameter of 3 mm and the volcanic rock with a particle diame...

Embodiment 2

[0045] In the present embodiment, the aquifer 8 is formed by mixing the volcanic rock with a particle diameter of 6 mm and the volcanic rock with a particle diameter of 12 mm in a volume ratio of 5:2, and the thickness of the aquifer 8 is 120 mm; the coarse filter layer 7 is composed of The volcanic rock with a particle size of 6mm and the volcanic rock with a particle size of 12mm are mixed at a volume ratio of 3:1. The thickness of the coarse filter layer 7 is 60mm; the drainage layer 6 is paved with ceramsite with a particle size of 20mm.

[0046] The fine filter layer 12 in the catchment area 11 is made of acid-treated volcanic rock with a particle size of 6 mm. Among them, the treatment conditions of the acid-treated volcanic rocks are: select volcanic rocks with a particle size of 6mm, wash them repeatedly with water to remove impurities, then soak them in 0.1mol / L hydrochloric acid solution for 24 hours, then filter out the acid solution, and use Wash with distilled wat...

Embodiment 3

[0050] In the present embodiment, the aquifer 8 is formed by mixing the volcanic rock with a particle diameter of 5 mm and the volcanic rock with a particle diameter of 8 mm in a volume ratio of 4:2, and the thickness of the aquifer 8 is 80 mm; the coarse filter layer 7 is composed of The volcanic rock with a particle size of 4mm and the volcanic rock with a particle size of 10mm are mixed at a volume ratio of 2:1. The thickness of the coarse filter layer 7 is 40mm; the drainage layer 6 is paved with ceramsite with a particle size of 15mm. Ceramsite is gravel-shaped ceramsite.

[0051] The fine filter layer 12 in the catchment area 11 is paved with acid-treated volcanic rock with a particle size of 4 mm. Wherein, the treatment condition of acid-treated volcanic rock is as follows: select volcanic rock with a particle size of 4 mm, wash it repeatedly with water to remove impurities, then soak it in 0.5mol / L hydrochloric acid solution for 10 hours, then filter out the acid solut...

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Abstract

The invention relates to an urban rainwater recycling reutilization system based on lava rocks. The system is arranged on a plane roof of a building, and comprises a compounded vegetation region, as well as a rainwater collection region, a retaining wall and a pedestrian region which are arranged around the periphery of the compounded vegetation region in sequence from inside to outside, and a water collection region which is communicated with the rainwater collection region through a roof water collection pipe; the compounded vegetation region comprises a water separation layer, a water discharging layer, a rough filtering layer, a water accumulation layer, a planting matrix layer and a vegetation layer which are arranged in sequence from bottom to top; the water discharging layer is communicated with the water collection region through a roof water discharging pipe. Compared with the prior art, the system provided by the invention is simple in structure and convenient to construct; flood and draining waterlogging of urban buildings and purification and utilization of rainwater are combined, and the survival rate of greening vegetation of a building roof can be effectively improved; the urban rainwater recycling reutilization system has obvious economic benefits and environmental benefits.

Description

technical field [0001] The invention belongs to the technical field of application of inorganic materials, and relates to an urban rainwater recycling system based on volcanic stones. Background technique [0002] With global warming and the intensification of insufficient water resource allocation, the proportion of short-term heavy rainfall in urban precipitation types continues to increase. In the case of insufficient urban drainage systems, it is very easy to cause short-term urban waterlogging disasters, which affect people's normal life. cause a lot of inconvenience. It can be seen that it is imminent to solve the waterlogging disaster, but the urban drainage system is difficult to improve in a short period of time. [0003] Volcanic stone is a building material that is abundant in nature. It was widely used in garden setting during the feudal dynasty in China, and it is widely used in flower planting, indoor and outdoor landscape design, etc. in today's society. Vo...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): E04D13/00E04F13/04E04D11/00
CPCY02A30/254Y02B80/32E04D13/00E04D11/002E04D13/0404E04D13/0477
Inventor 李安政李志远张伟平
Owner TONGJI UNIV
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