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A functional zoning artificial wetland system for treating aquaculture wastewater

A technology for a constructed wetland system and functional zoning, applied in the field of functional zoning constructed wetland systems, can solve the problems of insufficient carbon sources in denitrification areas, and achieve the effects of avoiding the difficulty in controlling the amount of carbon sources added, low cost, and low operating costs.

Active Publication Date: 2018-07-06
CHINESE RES ACAD OF ENVIRONMENTAL SCI
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

At the same time, because the organic matter is preferentially used by microorganisms in the front or upper layer of the wetland, the carbon source in the denitrification area is insufficient, which inhibits the denitrification process.

Method used

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  • A functional zoning artificial wetland system for treating aquaculture wastewater

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0035] Such as figure 1 As shown, the functional zoning constructed wetland system for treating aquaculture wastewater according to the present invention includes an enhanced total nitrogen removal zone 1, an enhanced nitrification zone 2 and an enhanced denitrification zone 3 arranged in series. The enhanced total nitrogen removal zone 1 includes the first substrate zone and the first drainage zone. The first substrate zone includes the zeolite rapid adsorption-regeneration dynamic balance layer 5, the denitrification layer 6 and the first water collection layer 7 from top to bottom. A first water collecting pipe 8 is arranged in the first water collecting layer 7, and its water outlet end is arranged at the lower part of the first drainage area.

[0036] The first water distribution pipe 4 is set in the zeolite rapid adsorption-regeneration dynamic balance layer 5, and its water inlet end is connected with the external water inlet pipe, and a plurality of reoxygenation pipes...

Embodiment 2

[0052] Such as figure 1 As shown, the functional zoning constructed wetland system for treating aquaculture wastewater according to the present invention includes an enhanced total nitrogen removal zone 1, an enhanced nitrification zone 2 and an enhanced denitrification zone 3 arranged in series. The enhanced total nitrogen removal zone 1 includes the first substrate zone and the first drainage zone. The first substrate zone includes the zeolite rapid adsorption-regeneration dynamic balance layer 5, the denitrification layer 6 and the first water collection layer 7 from top to bottom. A first water collecting pipe 8 is arranged in the first water collecting layer 7, and its water outlet end is arranged at the lower part of the first drainage area.

[0053] The first water distribution pipe 4 is set in the zeolite rapid adsorption-regeneration dynamic balance layer 5, and its water inlet end is connected with the external water inlet pipe, and a plurality of reoxygenation pipes...

Embodiment 3

[0064] The difference from Example 2 is that the matrix used in the zeolite rapid adsorption-regeneration dynamic balance layer 5 is zeolite, and the filling thickness is 40 cm; the matrix used in the denitrification layer 6 is red brick slag, and the filling thickness is 80 cm;

[0065]The reoxygenation pipe 16 adopts a PVC pipe with a diameter of 10cm, and its upper end nozzle is at 20cm above the upper surface of the zeolite fast adsorption-regeneration dynamic balance layer 5, within the height of 30cm upwards from the zeolite fast adsorption-regeneration dynamic balance layer 5 lower surface The reoxygenation tube 16 has multiple rows of circular air holes with a diameter of 3mm staggered on the pipe wall. The circular air holes are inclined upward by 45 degrees from the outer wall to the inner wall. The spacing is 20mm, and the spacing between the centers of adjacent circular ventilation holes in the same row is 15mm; the spacing between multiple reoxygenation tubes 16 an...

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Abstract

The invention discloses a function division type constructed wetland system for treating culture wastewater. The system comprises, serially arranged, an enhanced total nitrogen removal area (1), an enhanced nitration area (2) and an enhanced denitrification area (3). The function division type constructed wetland system for treating culture wastewater can reasonably utilize the water quality characteristics of culturing wastewater, and realizes cooperative and efficient removal of organic matters, N and P.

Description

technical field [0001] The invention relates to the technical field of environmental protection, in particular to a functionally partitioned constructed wetland system suitable for treating aquaculture wastewater. Background technique [0002] In recent years, with the continuous improvement of people's quality of life, the demand for animal products is increasing day by day, which promotes the rapid development of animal husbandry in my country. At the same time, the amount of pollutants such as COD, N, and P emitted by livestock and poultry breeding continues to increase, causing environmental pollution problems to become more and more prominent. According to the Bulletin of the First National Survey of Pollution Sources released in February 2010, among the major pollutants in the livestock and poultry breeding industry, COD emissions are as high as 12.68 million tons, accounting for 41.8% of the country; total nitrogen emissions are 1.02 million tons, accounting for 22% ...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): C02F3/30C02F3/32C02F103/20C02F101/30
CPCY02W10/10
Inventor 周岳溪沈志强宋爱红苗莹
Owner CHINESE RES ACAD OF ENVIRONMENTAL SCI
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