Plant landscape-type sewage ecological treatment technology

A technology for ecological treatment and sewage, applied in water/sewage multi-stage treatment, water/sludge/sewage treatment, chemical instruments and methods, etc., can solve the problems of large area of ​​treatment system, influence on popularization and application, restrictions, etc. Achieve the effects of saving operation and management costs, improving regeneration capacity, and wide coverage

Inactive Publication Date: 2012-10-17
池锦蓉
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  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0004] Constructed wetland sewage ecological treatment technology has been widely used since the 1970s, but the large area occupied by the treatment system seriousl

Method used

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  • Plant landscape-type sewage ecological treatment technology
  • Plant landscape-type sewage ecological treatment technology
  • Plant landscape-type sewage ecological treatment technology

Examples

Experimental program
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Effect test

Embodiment 1

[0024] Refer to attached figure 1 , 2 6. Treatment object: domestic sewage in a certain village. Processing capacity: 15tph. Sewage treatment process: lifting pump room, grid well (1), grit chamber (2), pre-sedimentation tank (3), submerged flow anaerobic tank (4), surface flow microdynamic nitrification tank (5), sedimentation Stable pond (6), surface flow ecological ditch (7), subsurface flow ecological green space (8) and ecological release pond (9). Drainage into the river. Among them, the design parameters are pre-sedimentation tank (3) HRT1h, subsurface flow anaerobic tank (4) HRT24h, surface flow microdynamic nitrification tank (5) HRT4h, sedimentation stabilization pond (6) HRT3h. The pump (11) is 15tph, and 60% of the effluent enters the submerged anaerobic tank (4), and the rest is sprayed to the plants. Pump (12) 10tph, regular operation, 0.5h at intervals of 6h. The pump (16) runs regularly, and backwashes for 0.4h at intervals of 8h. System treatment effec...

Embodiment 2

[0026] Refer to attached figure 1 , 3 6. Treatment object: domestic sewage in a certain town. Design capacity: 110tph. Sewage treatment process: lifting pump room, grid well (1), grit chamber (2), pre-sedimentation tank (3), submerged flow anaerobic tank (4), surface flow microdynamic nitrification tank (5), sedimentation Stable pond (6), surface flow ecological ditch (7), subsurface flow ecological green space (8) and ecological release pond (9). Drainage into the river. Among them, the design parameters are pre-sedimentation tank (3) HRT1.5h, subsurface flow anaerobic tank (4) HRT20h, surface flow microdynamic nitrification tank (5) HRT5h, sedimentation stabilization pond (6) HRT2.8h. The pump (11) operates at 120tph at regular intervals of 0.5h for 1h. The pump (12) runs regularly at 50tph, and runs for 0.4h every 5h. The pump (16) runs regularly, backwashing at intervals of 8h and 0.4h, and inflating during backwashing. System treatment effect: the COD removal rate...

Embodiment 3

[0028] Refer to attached figure 1 , 46. Treatment object: Sewage from a food industrial park (food waste water 50%). Design capacity: 100tph. Sewage treatment process: sewage regulating tank, lifting pump room, grid well (1), grit chamber (2), pre-sedimentation tank (3), subsurface flow anaerobic tank (4), surface flow microdynamic nitrification tank ( 5), sedimentation stabilization pond (6), surface flow ecological ditch (7), subsurface flow ecological green space (8) and ecological release pond (9). Drainage into the river. Among them, the design parameters are pre-sedimentation tank (3) HRT4h, submerged flow anaerobic tank (4) HRT36h, surface flow microdynamic nitrification tank (5) HRT10h, sedimentation stabilization pond (6) HRT4h. The pump (11) runs continuously at 200tph. The pump (12) runs regularly at 50tph, and runs for 0.5h every 2h. The pump (16) runs regularly, and backwashes for 0.4 hours at intervals of 6 hours, and inflates during backwashing. System t...

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Abstract

The invention discloses a plant landscape-type sewage ecological treatment technology. The plant landscape-type sewage ecological treatment technology comprises sewage pretreatment, constructed wetland and plant treatment, and micro-power aeration treatment. The plant landscape-type sewage ecological treatment technology is characterized in that a grid well (1), a grit chamber (2), a pre-precipitation tank (3), a subsurface flow-type anaerobic tank (4), a surface current-type micro-power nitrification tank (5), a precipitation stabilization pond (6), a subsurface flow-type ecological channel (7), a subsurface flow-type ecological greening space (8) and an ecological discharge tank (9) are adopted and are planted with plants. Through the subsurface flow-type anaerobic tank (4) and the surface current-type micro-power nitrification tank (5), organic matter removal, denitrification and part of dephosphorization are finished. The precipitation stabilization pond (6) can realize sludge settling and digestion simultaneously. Undigested sludge can be fed back to the pre-precipitation tank (3) periodically so that a treatment amount of sludge is reduced. Through the subsurface flow-type ecological channel (7) and the subsurface flow-type ecological greening space (8), dephosphorization is realized. The bottom of a water inlet section (13) of the subsurface flow-type ecological greening space (8) is provided with a back flush device (17) so that the back flush is realized. Through the combination of a plant-modified A/O biochemical treatment technology and constructed wetlands, organic matter treatment, denitrification and dephosphorization are realized simultaneously and landscape effects are obtained.

Description

Technical field: [0001] The invention relates to the field of environmental protection, and further refers to a sewage ecological treatment process. Background technique: [0002] The design goal of the sewage treatment process is to take into account the treatment effect, treatment efficiency and operation treatment cost. [0003] Constructed wetland sewage treatment is an important sewage ecological treatment process. Treating sewage through constructed wetlands can recycle water and fertilizer resources in sewage by using the physical, chemical and biological characteristics of the soil-plant-microbial complex system While degrading pollutants for effective purification, a natural artificial composite ecological landscape is formed by creating an artificial wetland environment. The sewage ecological treatment system represented by the constructed wetland system has many advantages such as low investment, good effluent quality, strong impact resistance, increased green ar...

Claims

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Application Information

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IPC IPC(8): C02F9/14
Inventor 池锦蓉
Owner 池锦蓉
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