Cleaning system for sand filtration layer

A technology for cleaning the system and filtering the sand layer, which is applied in the field of cleaning systems, can solve the problems of enlarged project scale and high operating cost, and achieve the effects of miniaturization of equipment, prevention of mesh clogging, and reduction of project scale and operating cost

Active Publication Date: 2015-08-05
HITACHI ZOSEN CORP +1
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

Therefore, the cleaning equipment is enlarged, the project scale is enlarged, and the operating cost is also increased.

Method used

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  • Cleaning system for sand filtration layer
  • Cleaning system for sand filtration layer
  • Cleaning system for sand filtration layer

Examples

Experimental program
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Embodiment

[0031] exist figure 1 Among them, 1 is the seawater infiltration water intake equipment, which absorbs the seawater permeated into the filter sand layer 2 and the support gravel layer 3 arranged on the seabed through the water intake pipe 4 buried in the support gravel layer 3 . The water intake pipe 4 is a pipe with a water intake hole, and is connected with a sump pump to obtain water from the seawater permeating into the filter sand layer 2 and the supporting gravel layer 3 .

[0032] 5 is the cleaning system of the present invention, which is composed of an air diffuser pipe 7 embedded in the filter sand layer 2 and having an air injection hole 6, and a compressed air delivery device 8 that sends air to the air diffuser pipe 7. The cleaning system removes the filter sand The suspended matter caused by the blockage of the mesh of layer 2 is cleaned.

[0033] In this embodiment, a plurality of diffuser pipes 7 are arranged and embedded in the horizontal direction. Each dif...

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PUM

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Abstract

[Problem] To provide a more compact cleaning apparatus for a sand filtration layer, and reduce the scale of operations and the running costs. [Solution] The cleaning system (1) is designed for use in a seawater permeation intake apparatus (5) for intake of seawater having permeated through a sand filtration layer (2) and a supporting gravel layer (3) on the seabed through intake pipes (4) buried in the supporting gravel layer (3), in order to remove from the sand filtration layer (2) suspended matter that could cause clogging. The system is provided with: diffuser tubes (7) buried in the sand filtration layer (2) and having air holes (6); and a compressed air delivery means (8) for feeding air into the diffuser tubes (7). The filtration sand of the sand filtration layer (2) is agitated by jetting air from the air holes (6), removing suspended matter that has become admixed or deposited in the sand filtration layer (2). [Effect] As compared with conventional systems that inject water or seawater into a sand filtration layer, the cleaning equipment can be more compact, and the scale of operations and running costs can be reduced.

Description

technical field [0001] The present invention relates to a cleaning system for a filter sand layer, which removes suspended substances that cause mesh clogging from the filter sand layer of a seawater infiltration water intake facility installed on the seabed. Background technique [0002] For example, in a seawater desalination plant, in order to obtain clean seawater with less impurities, a supporting gravel layer and a filter sand layer are installed on the seabed, and the seawater infiltrating into these layers is taken from the seawater infiltrating through the water intake pipe buried in the supporting gravel layer. Water intake equipment (for example, the patent document 1 figure 1 ). [0003] If the osmosis water intake method implemented using this seawater osmosis water intake device continues to draw water, suspended substances such as sediment and plankton (hereinafter simply referred to as "suspended substances") that cause the mesh clogging of the filter sand l...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): B01D24/46B01D29/66E03B3/04
CPCB01D24/4631B01D24/4636B01D2101/04B01D2201/084B01D2201/087
Inventor 乾真规新里英幸井上隆之柳本洋一大岩忠男三村等
Owner HITACHI ZOSEN CORP
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