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Constructed wetland-ecological ditch system for treating scattered piggery washing wastewater

A technology of ecological ditches and constructed wetlands, applied in the directions of water/sewage multi-stage treatment, water/sludge/sewage treatment, chemical instruments and methods, etc., can solve problems such as eutrophication and increased nitrogen and phosphorus content, and achieve The effect of avoiding clogging and efficient treatment

Active Publication Date: 2015-11-18
CHINESE RES ACAD OF ENVIRONMENTAL SCI
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

The concentration of organic matter in the aquaculture wastewater after anaerobic treatment is greatly reduced, but it still contains high concentrations of nitrogen and phosphorus and a large number of bacteria. If it is directly discharged into the water body, the nitrogen and phosphorus content in the water will increase, and eutrophication is prone to occur; at the same time, bacteria may cause malaria , typhoid or other epidemics

Method used

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  • Constructed wetland-ecological ditch system for treating scattered piggery washing wastewater
  • Constructed wetland-ecological ditch system for treating scattered piggery washing wastewater

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0029] Such as figure 1 and figure 2 As shown, the constructed wetland-ecological ditch system for treating the flushing wastewater of dispersed pig farming in the present invention includes a constructed wetland 1, an enhanced nitrification ecological ditch 2, an enhanced denitrification ecological ditch 3, a water distribution pipe 4, a water distribution area 5, a soil layer 6, a fine Sand layer 7, reaction area 8, wetland plants 9, water and mud collection area 10, porous plate 11, wetland drainage area 12, drainage pipe 13, biological zeolite area 14, water outlet pipe 15, solid carbon source denitrification area 16, prefabrication Cover plate 17, deep purification area 18, discharge pipe 19, plant 20 in enhanced nitrification area, plant 21 in deep purification area, purification drainage area 22, water inlet pipe 23.

[0030]In this embodiment, the front end of the constructed wetland 1 is the water distribution area 5, the middle is the water and mud collection area ...

Embodiment 2

[0041] Such as figure 1 and figure 2 As shown, a constructed wetland-ecological ditch system for treating the flushing wastewater of scattered pigs, including constructed wetland 1, enhanced nitrification ecological ditch 2 and enhanced denitrification ecological ditch 3 arranged in series. Area 5, the rear end is provided with a wetland drainage area 12, the constructed wetland 1 sequentially includes a water and mud collection area 10, a reaction area 8, a fine sand layer 7 and a soil layer 6 from bottom to top, and the enhanced nitrification ecological ditch 2 includes a biological zeolite area 14 , the enhanced denitrification ecological ditch 3 includes a solid carbon source denitrification zone 16 and a deep purification zone 18 adjacent to each other.

[0042] A prefabricated cover plate 17 is arranged on the solid carbon source denitrification area 16, a purification drainage area 22 is arranged at the rear end of the deep purification area 18, a water distribution p...

Embodiment 3

[0051] Such as figure 1 and figure 2 As shown, a constructed wetland-ecological ditch system for treating the flushing wastewater of scattered pigs, including constructed wetland 1, enhanced nitrification ecological ditch 2 and enhanced denitrification ecological ditch 3 arranged in series. Area 5, the rear end is provided with a wetland drainage area 12, the constructed wetland 1 sequentially includes a water and mud collection area 10, a reaction area 8, a fine sand layer 7 and a soil layer 6 from bottom to top, and the enhanced nitrification ecological ditch 2 includes a biological zeolite area 14 , the enhanced denitrification ecological ditch 3 includes a solid carbon source denitrification zone 16 and a deep purification zone 18 adjacent to each other.

[0052] A prefabricated cover plate 17 is arranged on the solid carbon source denitrification area 16, a purification drainage area 22 is arranged at the rear end of the deep purification area 18, a water distribution p...

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Abstract

The invention discloses a constructed wetland-ecological ditch system for treating scattered piggery washing wastewater. The system comprises a constructed wetland (1), an intensified nitrification ecological ditch (2) and an intensified denitrification ecological ditch (3) which are connected in series, wherein a water distribution area (5) is arranged at the front end of the constructed wetland (1), a wetland drain area (12) is arranged at the back end, the constructed wetland (1) sequentially comprises a water and mud collection area (10), a reaction area (8), a fine sand layer (7) and a soil layer (6) from bottom to top, the intensified nitrification ecological ditch (2) comprises a biozeolite area (14), and the intensified denitrification ecological ditch (3) comprises a solid carbon source denitrification area (16) and a deep purification area (18) which are adjacent to each other in a front-and-back manner. The system can effectively remove pollutants in the scattered piggery washing wastewater and has the advantages that the system can remove nitrogen and phosphorus continuously, is simple to maintain and economical in operation and the like.

Description

technical field [0001] The invention relates to the technical field of environmental protection, in particular to an artificial wetland-ecological ditch system capable of treating dispersed flushing wastewater from pig farming. Background technique [0002] The scale of scattered pig raising in rural areas is mostly less than 200 heads. The characteristic is that the pig farms are built near their own yards, and the food composition of pigs is mainly hogwash and green forage, supplemented by some feed. As an important part of the rural economy, decentralized pig farming has brought huge environmental pollution while generating income for rural residents. According to the Bulletin of the First National Survey of Pollution Sources, livestock and poultry farming has become the number one source of pollution in many areas. As a pillar industry of the local economy, the decentralized pig farming industry is also the main source of income for individual farming households. It is ...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C02F9/14
Inventor 周岳溪沈志强肖宇
Owner CHINESE RES ACAD OF ENVIRONMENTAL SCI
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