CN104016487A

CN104016487A - Artificial wetland

Info

Publication number: CN104016487A
Application number: CN201410243905.1A
Authority: CN
Inventors: 林国忠
Original assignee: Xiamen Guo Shou Boar Development Corp Ltd
Current assignee: Xiamen Guo Shou Boar Development Corp Ltd
Priority date: 2014-06-04
Filing date: 2014-06-04
Publication date: 2014-09-03

Abstract

The invention provides an artificial wetland. The artificial wetland comprises a wetland pond, wherein the bottom of the wetland pond is sequentially provided with an impermeable layer, a drainage layer, a transition layer, a filtering layer and a covering layer from bottom to top; the wall of the wetland pond is also provided with an impermeable layer; a plurality of collecting pipelines are embedded in the drainage layer; the side wall of each collecting pipeline is uniformly provided with a plurality of collecting slotted holes; the covering layer is provided with a plurality of water delivery pipelines; each water delivery pipeline is provided with a plurality of water delivery holes; the drainage layer is made of gravel with the particle size of 16-20mm, the transition layer is made of gravel with the particle size of 8-16mm, the filtering layer is made of crude sludge sand with the particle size of 0.2-6mm, and the covering layer is made of gravel with the particle size of 8-16mm. The artificial wetland is reasonable in padding particle size and structural layout, capable of preventing the pipelines from being blocked, good in permeability performance due to the adoption of the crude sand and gravel mixed padding and high in sludge treatment efficiency.

Description

A kind of artificial swamp

Technical field

The present invention relates to a kind of artificial swamp.

Background technology

Artificial swamp is a kind of sewage disposal technology, by on sewage, the mud wetland that controlledly dosing is manually built to warp, sewage and mud are in mobile in a certain direction process, mainly utilize physics, chemistry, the biological triple synergies of soil, artificial dielectric, plant, microorganism, a kind of technology that sewage, mud are processed.Its mechanism of action comprises that absorption, delay, filtration, redox, precipitation, microorganism decomposition, conversion, plant are covered, the effect of residue accumulated, water transpiration and nutrition absorption and all kinds of animals.It has that treatment effect is good, during-operation service convenient management, engineering capital construction and the feature such as running expense is low, is widely used in the area that land resources enriches relatively and processes sanitary sewage, preserves the ecological environment.

Artificial wet land system is mainly made up of Wetlands ecosystems and transmission & distribution water system.Wherein Wetlands ecosystems are generally made up of the waterplant of cultivating on bio-carrier and bio-carrier and attached microbial; Transmission & distribution water system is determining the operation scheme of artificial wet land system, is responsible for transporting sewage in Wetlands ecosystems.In sewage, the organic pollutant of the element such as carbon containing, nitrogen, phosphorus can be absorbed or degrade as the nutrition of plant in Wetlands ecosystems and microbial metabolism growth; It is to be also transported to root system of plant and bio-carrier surface by transmission & distribution water system that Wetlands ecosystems are moved required oxygen.

Artificial wet land system is generally divided into horizontal flow, undercurrent and vertical current at present, and wherein, floor space is little compared with other form wetland, processing efficiency is high, whole system can be built inferior advantage completely in and be widely used because it has for vertical current constructed wetland.

Summary of the invention

The technical problem to be solved in the present invention, is to provide a kind of artificial swamp, and its packing material size and reasonable structural arrangement can prevent line clogging, and the filler water permeability of coarse sand and gravel mixing is good, and the efficiency of disposing of sewage is high.

The present invention realizes above-mentioned technical problem like this:

A kind of artificial swamp, described artificial swamp comprises a wetland pond, at the bottom of the pond in described wetland pond, be disposed with from top to bottom impervious barrier, layer of displacement, transition layer, filtering layer and tectum, the pool wall in described wetland pond is also provided with impervious barrier, in described layer of displacement, be embedded with plural conduit, the sidewall of each conduit is evenly provided with plural number and collects slotted eye, is provided with plural water pipe on described tectum, on each described water pipe, is provided with plural water hole; The gravel that described layer of displacement is 16 ~ 20mm by particle diameter forms, and the gravel that described transition layer is 8 ~ 16mm by particle diameter forms, the mud coarse sand composition that described filtering layer particle diameter is 0.2 ~ 6mm, the gravel that described tectum is 8 ~ 16mm by particle diameter.

Further, the thickness of described layer of displacement is 18 ~ 22cm, and the thickness of described transition layer is 8 ~ 12cm, and the thickness of described filtering layer is 75 ~ 85cm, and described tectal thickness is 8 ~ 12cm.

Further, the receiving tank bore dia arranging in described conduit is less than the diameter of layer of displacement gravel, can prevent gravel blocking pipe.

Further, described impervious barrier is geotextile impervious barrier, and its cost is low, and installation process is simple, quick.

Tool of the present invention has the following advantages:

Each packing layer of the present invention has following functions: impervious barrier, prevents sewage permeation polluted underground water body;

Layer of displacement, collects filtration treatment sewage, and discharges by conduit; Transition layer, for preventing that the gravel of upper strata filtering layer from stopping up lower layer of displacement; Filtering layer, for filtering sewage; Tectum, to adopt particle diameter be 8 ~ 16mm gravel, can avoid the sewage that filtering layer that particle diameter is less is flowed out in hydraulic pipe directly to wash away, and the filtering layer unfairness causing affects filter effect.

The present invention is by the screening to the each packing layer thickness of wetland and gravel particle diameter, solve existing artificial swamp because of the line clogging problem that Study on Packing Medium Selection particle diameter is unreasonable, filling-material structure layout is unreasonable, pipeline tapping mode is unreasonable etc. causes, greatly reduced the probability of line clogging; Artificial swamp of the present invention is vertical flow pattern, without any need for sludge treatment device, sewage is diafiltration downward vertically from top layer, passes through successively different medium layers in defluent process, reach the object of purification, it is stronger to aerobic organic processing power and nitrification ability in waste water.

In a word, the present invention adopts gravel and coarse sand to form hypothallus, can provide good carrier for microorganism, for sewage seepage flow provides good hydraulics, provide aquatic plants growth required matrix, the filler water permeability that coarse sand and gravel mix is good, and the efficiency of disposing of sewage is high.

Brief description of the drawings

The present invention is further illustrated in conjunction with the embodiments with reference to the accompanying drawings.

Fig. 1 is the artificial wetland schematic cross-section of the present invention.

Accompanying drawing identifier declaration:

1, impervious barrier 2, layer of displacement

3, transition layer 4, filtering layer

5, tectum 6, conduit

7, water pipe 100, wetland pond.

Embodiment

Refer to shown in Fig. 1, embodiments of the invention are described in detail.

Emphasis is consulted Fig. 1, the present invention relates to a kind of artificial swamp, described artificial swamp comprises a wetland pond 100, at the bottom of the pond in described wetland pond 100, be disposed with from top to bottom impervious barrier 1, layer of displacement 2, transition layer 3, filtering layer 4 and tectum 5, the pool wall in described wetland pond 100 is also provided with impervious barrier 1, in described layer of displacement 2, be embedded with plural conduit 6, the sidewall of each conduit 6 is evenly provided with plural number and collects slotted eye (not shown), on described tectum 5, be provided with plural water pipe 7, on each described water pipe 7, be provided with plural water hole; The gravel that described layer of displacement 2 is 16 ~ 20mm by particle diameter forms, and the gravel that described transition layer 3 is 8 ~ 16mm by particle diameter forms, and the mud coarse sand that described filtering layer 4 is 0.2 ~ 6mm by particle diameter forms, the gravel that described tectum 5 is 8 ~ 16mm by particle diameter.Described impervious barrier 1 is geotextile impervious barrier, and its cost is low, and installation process is simple, quick.

The thickness of described layer of displacement 2 is 18 ~ 22cm, and the thickness of described transition layer 3 is 8 ~ 12cm, and the thickness of described filtering layer 4 is 75 ~ 85cm, and the thickness of described tectum 5 is 8 ~ 12cm.

The receiving tank bore dia arranging in described conduit 6 is less than the diameter of layer of displacement 2 gravels, can prevent gravel blocking pipe.

Each packing layer of the present invention has following functions: impervious barrier 1, prevents sewage permeation polluted underground water body; Layer of displacement 2, collects filtration treatment sewage, and discharges by collection tube 6 roads; Transition layer 3, for preventing that the gravel of upper strata filtering layer 4 from stopping up lower layer of displacement 2; Filtering layer 4, for filtering sewage; Tectum 5, adopts the gravel that particle diameter is 8 ~ 16mm, can avoid the filtering layer 4 that particle diameter is less directly to be washed away by the sewage flowing out in hydraulic pipe 7, and filtering layer 4 unfairnesses that cause affects filter effect.

The scavenging process that is filter sand, gravel inside in order to ensure Performance of Constructed Wetlands Substrates carries out smoothly, mainly to there is for a long time good permeability performance in order to ensure filter sand, gravel material, generally can plant the waterplant of a little well developed root systems, as reed, cattail, Canna generalis Bailey, Caulis Miscanthis floriduli etc.

Although more than described the specific embodiment of the present invention; but being familiar with those skilled in the art is to be understood that; our described specific embodiment is illustrative; instead of for the restriction to scope of the present invention; those of ordinary skill in the art are in equivalent modification and the variation done according to spirit of the present invention, all should be encompassed in the scope that claim of the present invention protects.

Claims

1. an artificial swamp, it is characterized in that: described artificial swamp comprises a wetland pond, at the bottom of the pond in described wetland pond, be disposed with from top to bottom impervious barrier, layer of displacement, transition layer, filtering layer and tectum, the pool wall in described wetland pond is also provided with impervious barrier, in described layer of displacement, be embedded with plural conduit, the sidewall of each conduit is evenly provided with plural number and collects slotted eye, is provided with plural water pipe on described tectum, on each described water pipe, is provided with plural water hole; The gravel that described layer of displacement is 16 ~ 20mm by particle diameter forms, and the gravel that described transition layer is 8 ~ 16mm by particle diameter forms, the mud coarse sand composition that described filtering layer particle diameter is 0.2 ~ 6mm, the gravel that described tectum is 8 ~ 16mm by particle diameter.

2. a kind of artificial swamp as claimed in claim 1, is characterized in that: the thickness of described layer of displacement is 18 ~ 22cm, and the thickness of described transition layer is 8 ~ 12cm, and the thickness of described filtering layer is 75 ~ 85cm, and described tectal thickness is 8 ~ 12cm.

3. a kind of artificial swamp as claimed in claim 1 or 2, is characterized in that: the receiving tank bore dia arranging in described conduit is less than the diameter of layer of displacement gravel.

4. a kind of artificial swamp as claimed in claim 1, is characterized in that: described impervious barrier is geotextile impervious barrier.