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Artificial beach multilayer structure biological water quality purification system and construction method thereof

A multi-layer structure, water purification technology, 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 beaches, reduce water pollution, and reduce erosion erosion , easy to promote the effect

Active Publication Date: 2020-04-14
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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  • Artificial beach multilayer structure biological water quality purification system and construction method thereof
  • Artificial beach multilayer structure biological water quality purification system and construction method thereof

Examples

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 section 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 gla...

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Abstract

The invention discloses an artificial sand beach multilayer structure biological water quality purification system, the system comprises a water filling grid, a biological filtering layer, a coarse sand layer and a fine sand layer which are sequentially laid on a natural beach face from bottom to top, the thickness of each of the water filling grid, the biological filtering layer, the coarse sandlayer and the fine sand layer is 5 cm or above, and the section form formed by the water filling grid, the biological filtering layer, the coarse sand layer and the fine sand layer forms the balancedsection form of the beach. The invention further discloses a construction method of the system. The multi-layer filling sand beach provides a living and multiplying space for nitrifying bacteria, nitrogen and phosphorus pollutants in coastal water can be effectively removed, and the pollutant concentration is controlled within a safe range; the system can be built on any coast with proper hydrological conditions, is not limited by terrains, and is simple in structure and low in cost; by taking measures of matching the grid, a biological filter material, coarse sand and fine sand, hydrodynamicconditions inside the beach water body can be changed, scouring erosion of open sea wave tides to the artificial beach can be effectively reduced, and later repair work is reduced.

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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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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