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An artificial beach multi-layer structure biological water purification system and its construction method

A technology of water purification and multi-layer structure, applied in chemical instruments and methods, biological water/sewage treatment, multi-stage water treatment, etc., can solve problems such as ignoring the internal system transformation of the beach, and achieve easy promotion, reduced repair work, and construction easy effect

Active Publication Date: 2021-10-19
HOHAI UNIV
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

At present, the reclamation project of artificial beach only takes the way of filling sand to the beach surface and offshore to repair or build a new artificial beach for entertainment, that is, it only completes the transformation of the beach appearance and environment, and ignores the internal system of the beach. further transformation

Method used

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  • An artificial beach multi-layer structure biological water purification system and its construction method
  • An artificial beach multi-layer structure biological water purification system and its construction method

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Experimental program
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Effect test

Embodiment 1

[0071] The artificial beach system of the present invention: the extremely high water level once in a century is 5.90m, the design high water level is 4.83m, the design low water level is 0.57m, and the extremely low water level in a century is -0.63m. Lay 8cm-thick water-filled grids and 8cm-thick biological filtration layers sequentially from bottom to top on the sand surface in the natural state. Then lay coarse sand and fine sand, the slope of the high beach section is 1:60, the slope of the middle section is 1:29, the slope of the underwater slope section is 1:40, and the sections are 0-60m, 60-350m, 350m-mud surface connection. The high beach section reaches a design elevation of 6.0m, the middle section reaches a design elevation of 5.0m, and the underwater slope foot section reaches a design elevation of -5.0m. The median particle size of fine sand is 0.4-0.45 mm, and the median particle size of coarse sand is 2.0-2.5 mm. Among them, the water-filled grid is a glass f...

Embodiment 2

[0073] The artificial beach system of the present invention: the extremely high water level once in a century is 6.30m, the design high water level is 5.33m, the design low water level is 1.37m, and the extremely low water level in a century is 0.63m. A 20cm-thick water-filled grid and a 15cm-thick biological filter layer are laid sequentially from bottom to top on the sand surface in the natural state. Then lay coarse sand and fine sand, the slope of the high beach section is 1:50, the slope of the middle section is 1:40, the slope of the underwater slope section is 1:30, and the sections are 0-100m, 100-300m, 300m-mud surface connection. The high beach section reaches a design elevation of 6.5m, the middle section reaches a design elevation of 5.7m, and the underwater slope foot section reaches a design elevation of -4.0m. The median particle size of fine sand is 0.3-0.35 mm, and the median particle size of coarse sand is 1.0-1.5 mm. Among them, the water-filled grid is a g...

Embodiment 3

[0075] The artificial beach system of the present invention: the extremely high water level once in a century is 4.90m, the design high water level is 3.72m, the design low water level is -0.57m, and the extremely low water level in a century is -1.63m. A 10cm-thick water-filled grid and a 10cm-thick biological filter layer are laid sequentially from bottom to top on the sand surface in the natural state. Then lay coarse sand and fine sand, the slope of the high beach section is 1:80, the slope of the middle section is 1:30, the slope of the underwater slope is 1:40, and the sections are 0-80m, 80-400m, 400m-mud surface connection. The high beach section reaches a design elevation of 6.0m, the middle section reaches a design elevation of 4.0m, and the underwater slope foot section reaches a design elevation of -6.0m. The median particle size of fine sand is 0.4-0.45mm, and the median particle size of coarse sand is 3.0-4.0mm. Among them, the water-filled grid is a glass fiber...

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Abstract

The invention discloses a biological water quality purification system with a multi-layer structure of an artificial beach, which comprises a water-filled grid, a biological filter layer, a coarse sand layer and a fine sand layer which are successively laid on the beach surface in a natural state from bottom to top with a thickness of more than 5 cm. layer, the cross-sectional shape formed by the water-filled grid, the biological filter layer, the coarse sand layer and the fine sand layer constitutes the balanced cross-sectional shape of the beach. The invention also discloses the construction method of the system. The multi-layer filled beach of the present invention provides a space for nitrifying bacteria to survive and multiply, and can effectively remove nitrogen and phosphorus pollutants in coastal waters, so that the concentration of pollutants can be controlled within a safe range; the system can be established in any hydrological Coasts with suitable conditions are not restricted by terrain, simple in structure, and low in cost; the combination of grilles, biological filter materials, coarse sand, and fine sand can change the hydrodynamic conditions inside the beach water body, and can effectively reduce the impact of waves and tides in the open sea. The scouring and erosion of the artificial beach reduces the repair work in the later stage.

Description

technical field [0001] The invention relates to the construction of an artificial beach, in particular to an artificial beach multi-layer structure biological water purification system and a construction method thereof. Background technique [0002] With the improvement of living standards, seaside tourism has become a means of leisure and entertainment for people, and the beach has become one of the ideal places for people to relax. Due to their own geology and other reasons, some coastal cities have problems such as lack of or damage to natural beaches, beach erosion or poor quality of beaches. Therefore, some cities have proposed the idea of ​​building artificial beaches. At present, the reclamation project of artificial beach only takes the way of filling sand to the beach surface and offshore to repair or build a new artificial beach for entertainment, that is, it only completes the transformation of the beach appearance and environment, and ignores the internal system ...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): C02F9/14
CPCC02F1/00C02F1/001C02F3/34C02F9/00C02F2301/08
Inventor 姚昱婷孔俊王锐
Owner HOHAI UNIV
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