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A new type of anti-clogging constructed wetland and its application method

A constructed wetland, anti-clogging technology, applied in chemical instruments and methods, water/sludge/sewage treatment, biological water/sewage treatment, etc. Effect

Active Publication Date: 2016-01-20
上海同瑞环保工程有限公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

[0005] The present invention provides a new type of anti-clogging constructed wetland and its use method, so as to delay the clogging problem of the constructed wetland in the prior art after operation, and the problem that the constructed wetland is difficult to clean and cannot be restored when it is blocked.

Method used

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  • A new type of anti-clogging constructed wetland and its application method

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Embodiment

[0033] In the new anti-clogging constructed wetland of this embodiment, the water flow direction of sewage and wastewater can be set as a vertical flow, with bottom entering and top exiting. The anti-clogging constructed wetland includes from bottom to top:

[0034] The water storage space is used for preliminary precipitation of the incoming sewage and wastewater, and provides agitation space for the filter material layer when backwashing is blocked;

[0035] The filter material layer, wherein the medium filter material is a light medium with a density lower than that of water, and these light mediums form a light medium layer. The light medium can be selected from one or more of medium particles, block fillers or filaments, etc. For example, the light medium can be selected from light PE particles, EPS foam particles or ceramsite, light sponge etc. The stacking method of the light medium layer can be piled up randomly or in other forms, and the light medium layer can also b...

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Abstract

The invention discloses a novel anti-blockage constructed wetland. According to the constructed wetland, the adopted medium is a lightweight medium with density which is lower than that of water; preferably, a certain water storage space is reserved at the bottom of a medium layer. According to the constructed wetland, a filter material layer is formed by selecting the lightweight medium with density which is lower than that of water, the filter material layer is suspended at an upper layer of water, and the water storage space is formed below the filter material layer preferably, so that the aim of flushing can be realized through stirring the lightweight medium when blockage backflushing is performed, and then, the unblocked and long-term stable operation of the constructed wetland is realized.

Description

technical field [0001] The invention belongs to the field of sewage and wastewater treatment, and in particular relates to a novel anti-clogging constructed wetland and a method for using the same. Background technique [0002] Constructed wetlands are grounds similar to swamps that are artificially constructed and operated under control. Sewage and wastewater are distributed to the artificially constructed wetlands in a controlled manner. During the flow of sewage and sludge in a certain direction, the soil and media are mainly used. The physical, chemical and biological triple functions of plants and microorganisms are used to treat sewage sludge. In the existing artificial wetland treatment system, the medium is sand and other large-density filter materials, which are piled up inside the wetland. During the operation of the system, it cannot be stirred, and the backwashing intensity is low. After one or two years of operation, the problem of soil and medium blockage is ve...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): C02F3/32
Inventor 宗兵年佘新正韦联平
Owner 上海同瑞环保工程有限公司
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