System and method for purifying and reutilizing surface runoff water resources

A surface runoff and water resources technology, applied in the field of surface runoff water resource purification and reuse, can solve the problems of poor pollutant removal effect, weak surface runoff pollution control effect, secondary pollution, etc., to avoid secondary pollution of water bodies, Improved operating efficiency, service life, and structural stability

Inactive Publication Date: 2020-02-21
张锦霞 +6
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, most of the existing bioretention systems used to purify surface runoff water resources are sunken green lands, which are often simple in structure and relatively weak in controlling surface runoff pollution. The removal effect of pollutants is not good, and nitrogen, phosphorus pollutants and heavy metals may be continuously precipitated, causing secondary pollution

Method used

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  • System and method for purifying and reutilizing surface runoff water resources
  • System and method for purifying and reutilizing surface runoff water resources
  • System and method for purifying and reutilizing surface runoff water resources

Examples

Experimental program
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Embodiment 1

[0041] The system for purification and reuse of surface runoff water resources of this embodiment, such as figure 1 As shown, it includes a front water collection tank 1, a biological retention tank 2 and a rear water collection well 3. A rectification wall 4 is provided between the front water collection tank 1 and the biological retention tank 2, and the rectification wall 4 is embedded with Multi-layer parallel inclined plates 5 with an angle of 45° inclined upward from the front water collection tank 1 to the biological retention tank 2 (in the direction of normal water flow) (the total thickness of the multi-layer parallel inclined plates is 200-500mm, here is 200mm; The vertical height of the layer channel is 20-100mm, here preferably 30mm), the parallel channel 6 between the multi-layer parallel inclined plates 5 connects the front water collection tank 1 and the biological retention tank 2; the top of the rectifying wall 4 is an overflow Flow weir 26;

[0042] The front w...

Embodiment 2

[0056] The specific structure of the system for purifying and reusing surface runoff water resources of this embodiment is the same as that of Embodiment 1, and the materials used in each layer of the biological retention tank are shown in Table 1.

[0057] In this embodiment, the method for purifying and reusing surface runoff water resources of the aforementioned system includes the following steps:

[0058] 1) Take the formula amount of bacterial chaff, aluminum sludge, fly ash, and biochar to mix evenly, adjust the pH to 6.0-7.3 with ferrous sulfate to obtain a mixed matrix; mix the obtained mixed matrix with the native soil according to the designed ratio, Obtain vegetation layer material; mix the obtained mixed matrix and zeolite according to the designed ratio to obtain the filter layer material;

[0059] Take the formula amount of fly ash, mushroom chaff, and calcium carbonate and mix it evenly, then add aluminum sludge slurry (made by adding water to aluminum sludge, the amo...

Embodiment 3

[0064] The specific structure of the system for purifying and reusing surface runoff water resources of this embodiment is the same as that of Embodiment 1, and the materials used in each layer of the biological retention tank are shown in Table 1.

[0065] In this embodiment, the method for purifying and reusing surface runoff water resources of the aforementioned system includes the following steps:

[0066] 1) Take the formula amount of bacterial chaff, aluminum sludge, fly ash, and biochar to mix evenly, adjust the pH to 6.0-7.3 with ferrous sulfate to obtain a mixed matrix; mix the obtained mixed matrix with the native soil according to the designed ratio, Obtain vegetation layer material; mix the obtained mixed matrix and zeolite according to the designed ratio to obtain the filter layer material;

[0067] Take the formula amount of fly ash, mushroom chaff, and calcium carbonate and mix it evenly, then add aluminum sludge slurry (made by adding water to aluminum sludge, the amo...

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Abstract

The invention relates to a system and a method for purifying and reutilizing surface runoff water resources. The system comprises a fore-lying water collecting tank, a bioretention pond and a rear-laying water collecting well, wherein a rectifying wall is arranged between the fore-laying water collecting tank and the bioretention pond, multiple layers of parallel inclined plates inclining upwardsfrom the fore-laying water collecting tank to the bioretention pond are embedded in the rectifying wall, parallel channels between the multiple layers of the parallel inclined plates are communicatedwith the fore-laying water collecting tank and the bioretention pond, the bioretention pond comprises a water storage layer, a covering layer, a vegetation layer, an upper filtering layer, a filler layer, a sand filtering layer and a gravel layer, the water storage layer, the covering layer, the vegetation layer, the upper filtering layer, the filler layer, the sand filtering layer and the gravellayer are sequentially arranged from top to bottom, the vegetation layer is formed by mixing native soil and a composite matrix and then paving, the upper filtering layer is formed by mixing zeolite and a composite matrix and then paving, and the filler layer is formed by paving a composite filler. According to the invention, the system reduces the use of raw soil to the maximum extent, does not cause secondary pollution, has strong surface runoff water resource purification capacity, high removal efficiency and good removal effect on pollutants entering water, and achieves the recycling of surface runoff water resources.

Description

Technical field [0001] The invention belongs to the technical field of hydrology and water resources, and specifically relates to a system and method for purification and reuse of surface runoff water resources. Background technique [0002] Surface runoff refers to the rainwater that falls on the ground is intercepted by ground plants, absorbed by the soil and infiltrated into the ground. The remaining surface water flows through the surface of the basin, and finally flows into rivers, lakes and seas. In recent years, with the rapid advancement of urbanization and the gradual improvement of infrastructure such as roads and railways, the urban ground hardening rate has become higher and higher, which has changed the original natural hydrological cycle mechanism and destroyed the original natural water cycle process. It has caused a series of urban surface runoff water problems. For example, rainwater from heavy rainfall is difficult to infiltrate, and the confluence time is short...

Claims

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Application Information

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IPC IPC(8): C02F9/14C02F3/00C02F3/10
CPCC02F1/001C02F3/00C02F3/105C02F3/107C02F3/32C02F3/34C02F9/00C02F2103/001C02F2305/06Y02W10/10
Inventor 张锦霞张海霞何军赵清虎陈文静韩瑞瑞李金亮
Owner 张锦霞
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