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Assembled packing artificial vertical subsurface flow wetland unit, application thereof and sewage treatment process

A vertical subsurface flow and sewage treatment technology, applied in water/sewage multi-stage treatment, biological water/sewage treatment, water/sludge/sewage treatment, etc., can solve the problems of inconvenient replacement and easy blockage of the wetland system, and achieve replacement Simple, convenient wetland management, and high utilization rate

Inactive Publication Date: 2012-05-30
何航 +2
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

The present invention aims at the problems of easy blockage and inconvenient replacement of general wetland systems. The adopted sewage treatment wetland system can not only effectively prevent the blockage of the wetland system, but also adjust the filler components of the wetland unit according to the quality of the influent water. When blocked, the blocked part can be replaced in time without affecting other wetland units

Method used

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  • Assembled packing artificial vertical subsurface flow wetland unit, application thereof and sewage treatment process
  • Assembled packing artificial vertical subsurface flow wetland unit, application thereof and sewage treatment process
  • Assembled packing artificial vertical subsurface flow wetland unit, application thereof and sewage treatment process

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0175] Embodiment 1 of the present invention: the structure (such as figure 1 shown): a peripheral container 6 with an opening at the top and five structural layers placed therein. In the peripheral container 6, from top to bottom, there are planting layer 1, water distribution layer 2, packing layer 3, and percolation layer composed of water seepage matrix Layer 4, catchment layer 5. The substrates of the water distribution layer 2, the packing layer 3, the percolation layer 4 and the water collection layer 5 are laid on plastic trays whose pore diameter is smaller than the particle size of the substrate, and the substrate of the planting layer 1 is directly laid on the top of the water distribution layer 2. The peripheral container 6 is made of fiberglass, and its top is higher than the planting layer 1-15cm. The thickness of the planting layer 1 is 15cm, and the substrate is composed of rice field soil with a particle size of <2mm and fine sand in a weight ratio of 4:1; t...

Embodiment 2

[0179] Embodiment 2 of the present invention: the structure (such as figure 1 shown): a peripheral container 6 with an opening at the top and five structural layers placed therein. In the peripheral container 6, from top to bottom, there are planting layer 1, water distribution layer 2, packing layer 3, and percolation layer composed of water seepage matrix Layer 4, catchment layer 5. The substrates of the water distribution layer 2, the packing layer 3, the percolation layer 4 and the water collection layer 5 are laid on plastic trays whose pore diameter is smaller than the particle size of the substrate, and the substrate of the planting layer 1 is directly laid on the top of the water distribution layer 2. The peripheral container 6 is made of a plastic plate with a thickness of 6mm, and its top is higher than the planting layer 1-20cm. The thickness of the planting layer 1 is 20cm, and the matrix is ​​composed of paddy field soil with a particle size of <2mm and fine san...

Embodiment 3

[0183] Embodiment 3 of the present invention: a kind of sewage treatment wetland system (see figure 2 ), including a regulating tank 7, a pre-sedimentation treatment tank 8, a peristaltic pump 9 and several wetland units 11, the regulating tank 7 is connected to a sewage discharge pipe, a regulating tank 7, a pre-sedimentation treatment tank 8, a peristaltic pump 9, an inlet valve 10, The wetland units 11 are connected in sequence through pipelines, and the water collection pipe 12 is connected to the water outlet of the wetland units 11 . The wetland unit 11 is the prefabricated filler artificial vertical subsurface flow wetland unit described in Embodiment 1.

[0184] The size of the regulating pool 7 (made of glass fiber reinforced plastic) is 1m×1m×1m, and the effective volume is 0.75m 3 ; There is a middle grid at the water inlet, the grid interval of the middle grid is 20mm, and the size of the middle grid is 0.5m×0.5m. In order to reduce the probability of clogging o...

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Abstract

The invention discloses an assembled packing artificial vertical subsurface flow wetland unit, which comprises a peripheral container (6) of which the top is open and five structural layers arranged in the peripheral container, wherein the inside of the peripheral container is provided with a planting layer (1), a water distribution layer (2), a packing layer (3), a percolation layer (4) and a water collecting layer (5) consisting of permeable substrates in turn from top to bottom. The invention also discloses application of the wetland unit in a sewage treatment system, and a sewage treatment process. In the sewage treatment process, firstly, sewage enters a regulating pool (7); secondly, the sewage flows through a pre-precipitation treatment pool (8); thirdly, the sewage is pressurized by a peristaltic pump (9) and enters the wetland unit (11) through a water inlet valve (10); and finally, the sewage is discharged by a water collecting pipe (12) after purifying. The artificial wetland unit and the sewage treatment system comprising the unit provided by the invention can prevent a wetland system from blocking effectively and can regulate the components of a packing of the wetlandunit according different qualities of inlet water; the artificial wetland unit is convenient for maintaining; a blocked part can be replaced in time when the wetland unit is blocked without influencing other wetland units; and simultaneously, the blocked unit can be used for sewage treatment again by exchanging the packing inside so as to avoid waste.

Description

Technical field: [0001] The invention relates to an assembled filler artificial vertical underflow wetland unit, the application of the wetland unit in a sewage treatment system and a sewage treatment process, belonging to the technical field of sewage treatment. Background technique: [0002] At present, there are more and more projects using constructed wetlands for sewage treatment. Constructed wetlands are mainly composed of wetland plants, fillers, and microorganisms. Wetlands can remove pollutants in sewage through the synergy between the three. However, the wetland system has been in operation for a long time, the organic load is too high, the biomass generated in the system is increasing and other factors will cause blockage, resulting in a decrease in treatment efficiency and unsatisfactory effluent quality. If it is not treated in time, the whole wetland system will tend to be paralyzed, and the purification effect of sewage cannot be realized. Generally, the wet...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): C02F9/14C02F3/32C02F3/34
CPCY02W10/10Y02W10/37
Inventor 何航陆天友魏琛
Owner 何航