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Impurifying ecological bank-protection combined system

An ecological revetment and combined system technology, applied in coastline protection and other directions, can solve the problems of ineffective removal of pollutants, limited interception and purification effect, and short residence time, so as to ensure the interception and purification effect, clear seepage path, and increase residence time. Effect

Inactive Publication Date: 2007-03-28
HOHAI UNIV
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Problems solved by technology

However, these revetment technologies only have a certain interception and purification effect on small-flow rainfall runoff non-point source pollution. When the rainfall runoff flow is large, the residence time when flowing through the slope is too short, and the pollutants cannot be effectively removed, and the interception and purification effect is very high. limited

Method used

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  • Impurifying ecological bank-protection combined system

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Embodiment Construction

[0017] As shown in Figures 1 and 2, the mortar-masonry retaining wall 3 is set at the intersection of the river bank slope 1 and the river bottom 2, and the water-facing slope of the bank slope 1 is tamped and set at a height 1 / 2 slope above the normal water level. With a 5cm jet sill 5, the slope is divided into three sections, which are raised sequentially from top to bottom; first, an 8cm thick layer of coarse sand 4 is laid on the slope, and then in the order of the slope from bottom to top, it is placed on each section of the slope. Lay 10cm, 15cm, 20cm thick gravel permeable layer 6 on the coarse sand layer, the diameter of which is 1.0~5.0cm, and finally lay the "8" shape sandless concrete ecological brick 7 on the gravel layer; At the intersection of slope 1 and road 8, a right-angle trapezoidal water collection trough 9 with an upper bottom of 90 cm, a lower bottom of 50 cm and a height of 40 cm is excavated on the side of the road 8. The bottom of the water collection tr...

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Abstract

The invention relates to revetment combination system that has cutoff purifying function to the river rainfall runoff surface contaminating material. It sets non-sand concrete curbstone at the intersection of road and bank slope, a catch water channel is set at one side of intersection road, where coarse sand bedding is paved. Crushed stones are filled in the channel, and the top of channel is sealed by non-sand concrete. On the band slope toward water side paves coarse sand, crushed stone of different thickness, and ecology brick. Cement laid stone masonry breast wall is set at basal slope, and growing plant at the bank slope. It increases the residence time for runoff in the system and takes purification to it.

Description

Technical field [0001] The invention relates to an environmental protection type river bank protection facility, in particular to a slope-type variable seepage diameter non-point source interception and purification ecological bank protection combined system that has the effect of intercepting and purifying the non-point source pollutants of rainfall runoff entering the river at different flow rates. Background technique [0002] With the acceleration of the development of my country’s urbanization level, the proportion of permeable area is getting smaller and smaller. The sudden and impactful urban non-point source pollution caused by rainstorm runoff has become one of the main sources of water environmental pollution in receiving waters. One. Urban rainstorm runoff contains a lot of pollutants, and the pollution load generated by initial runoff is much higher than that of urban domestic sewage. Water environment pollution caused by non-point sources of rainfall runoff has becom...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): E02B3/12
Inventor 王超王沛芳王艳颖侯俊
Owner HOHAI UNIV
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