CN201962124U

CN201962124U - Artificial floating wetland

Info

Publication number: CN201962124U
Application number: CN2011200947200U
Authority: CN
Inventors: 宋伟; 韩士群; 严少华
Original assignee: Jiangsu Academy of Agricultural Sciences
Current assignee: Jiangsu Academy of Agricultural Sciences
Priority date: 2011-04-02
Filing date: 2011-04-02
Publication date: 2011-09-07
Anticipated expiration: 2021-04-02

Abstract

The utility model relates to an artificial floating wetland suitable for purifying water in heavy waves and deeper water. The artificial floating wetland comprises a floating wetland unit, foot poles fixed in water, and a fixing rope for fixedly connecting the floating wetland unit with the foot poles; and the floating wetland units are fixed through a connecting rope in a detachable manner. The artificial floating wetland has large buoyancy, strong resistivity, low possibility of crushing, good flexibility, stronger anti-wave capability, and low possibility of wind wave scattering, long purified water time and purified water vacuum period.

Description

A kind of artificial floating wetland

Technical field

The present invention relates to a kind of the waterborne plant floating bed of water body purification that be mainly used in, a kind of ecological floating island, particularly relate to a kind of artificial floating wetland that is used for water body purification, especially relate to and a kind ofly be suitable for the big water body of stormy waves or than the artificial floating wetland of the water body purification of deep water body.

Background technology

In recent years, the water quality lack of water often appears in the aggravation of the eutrophication degree of the many water bodys of China, becomes the bottleneck of social development.People constantly explore and seek a kind of restoration of the ecosystem scheme, wherein utilize pleuston as pioneer plant, make up aquatic vegetation, and the measure that improves water body self-purification ability is widely used.Used pleuston multiselect Herba Eichhorniae, species are single, and structure of community is simple, and the purification efficiency in waters, area, temperate zone in winter obviously descends; And it is less that the purification place all is selected in stormy waves, the waters that current are slow, such as arm of lake, lakeshore, fork and pond etc.Under the situation of high sea and current urgency, remove the direct physical damage, the decline of phase mutual friction aggravation pleuston between plant individual; If the pleuston carrier structure is not good enough, may cause later maintenance cost sharply to rise.Simultaneously, the existing general low temperature tolerance ability of plant a little less than, winter, plant was dead and lose detergent power to water body.

Prior art utilizes porous plastics as carrier, and buoyancy is provided, and porous plastics is broken easily, floats on the surface after the fragmentation, causes secondary pollution, and plastic foamboard is very easily thrown by wave owing to waterproof; The plastic material that is extensively used aspect carrier, its capacity of anti-storm is relatively poor, and the plastics cost is higher, not only be not suitable for the big big water surface of stormy waves, and cost is too high, can not large-scale application.

Summary of the invention

The purpose of this invention is to provide a kind of artificial floating wetland, this artificial floating wetland will satisfy three requirements simultaneously: 1. can be stable be fixed in the water body, in high sea and rapid current, be not easy to overturn, 2. snappiness is good, be not easy fragmentation, cause the secondary pollution of fragment, 3. all have the water body purification function throughout the year.

Foregoing invention purpose of the present invention is achieved through the following technical solutions:

A kind of artificial floating wetland is provided, and described artificial floating wetland comprises floating wetland unit, is fixed in the pin stake of water body and the static line that floating wetland unit is connected and fixed on the pin stake; Detachably fixing between the described floating wetland unit by connection cord.

As a kind of improvement, described floating wetland unit comprises carrier and year intravital plant, and described carrier is made of two-layer framework about the staggered fixed, and described two-layer framework up and down also is enclosed with reticulated structure outward respectively.

As a kind of preferred interlace mode, described two-layer framework vertical interlaced is up and down fixed.

In order better to adapt to the various water bodies plant cultivating,, between the reticulated structure of described lower floor framework and its outer wrap, also include back-up coat as a kind of adaptation.

The present invention provides a kind of preferred plant to choose mode simultaneously, and described two-layer framework up and down is the mao bamboon framework, and described year intravital plant is water peanut.

In order better to adapt to the growth of carrier implants, enough growing spaces are provided, the cancellated aperture of described upper strata framework is 2-4cm, the cancellated aperture of described lower floor framework is 1-2cm.

After adopting above-mentioned technical scheme, the present invention compared with prior art, its beneficial effect is conspicuous.At first, artificial floating wetland buoyancy provided by the present invention is big, and strong resistance is difficult for fragmentation, and chooses mao bamboon as frame material, not only draw materials conveniently, and cost is low, and easily big area is promoted.Secondly, adopt artificial floating wetland snappiness provided by the present invention good, it is very closely knit to add that simultaneously water peanut forms the rhizome layer, so have stronger capacity of anti-storm, is difficult for being broken up by stormy waves.At last, the artificial floating wetland water purification time provided by the present invention is long, is not easy to occur the water purification vacuum phase.

Description of drawings

Fig. 1 is an overall structure synoptic diagram of the present invention,

Fig. 2 is a floor map of the present invention,

Wherein, the reticulated structure of the reticulated structure of 0-bed mud, 1-1-upper strata framework, 1-2 lower floor framework, 2-1-upper strata framework, 2-2-lower floor framework, 3-carrier implants water peanut, the stake of 4-pin, 5-static line, 6-connection cord.

Embodiment

Below in conjunction with accompanying drawing, the present invention is further detailed.

Embodiment 1

Make up artificial floating wetland unit as shown in Figure 1, concrete steps are:

The first step is made floating wetland carrier: with 5 Φ 100mm, length be 4 meters mao bamboon by the grow up rectangle of wide 2 m of 4 m of bamboo spacing 50cm pendulum, forming diameter is the framework 1-2 of carrier lower floor of 10cm, thus as the support of artificial floating wetland.The mao bamboon of laying out 9 Φ 80mm in the above by bamboo spacing 50cm, the interface point of mao bamboon is tightened with the galvanized wire of Φ 4mm, forming diameter is the carrier upper strata framework 1-1 of 8cm, thereby form the little square that 32 length of sides are 50cm, use the reticulated structure 2-2 parcel framework 1-2 of lower floor of lower floor's framework of screen distance 1-2cm then.For the stability of seed, we can set up a back-up coat, and generally our back-up coat that adopts is the grass system rush bag between the reticulated structure 2-2 of the framework 1-2 of lower floor and lower floor's framework.

Second step plantation pleuston: annual 4-6 month, in framework, at first place water peanut 3 or disconnected branch, place coverage 100%, cover the reticulated structure 2-1 of the fishing net of 1-2 layer screen distance 2-4cm again as the upper strata framework, thereby wrap water peanut, prevent the plant escape, the fishing net of parcel water peanut uses the plastic ties colligation on bamboo upper strata framework 1-1.Then, carrier and water peanut are positioned in the fertile hydrostatic water body cultivated 3-7 days.

The 3rd step plant community is set up: treat 3-7 days water peanut root growth and flourishing gradually and mutually on dish knot, the rush bag behind the attachment portion material, in water peanut, sow the seed of ditch millet 7-20g/m2, nutgrass flatsedge 5-15g/m2, mater convolvulus 5-10g/m2 and 6-15g/m2 rye grass, be combined into floating wetland unit structure; Be positioned over then in the fertile hydrostatic water body and cultivate more than 20 days, transplant 10-40 strain/m2 yellow flag then in the middle of water peanut; It is the annual 4-6 month that modular construction is cultivated suitable time.To winter, plant all can enter resting stage, at this phenomenon, be to increase species diversity, make up evergreen pleuston group, sow the seed of 7-15g/m2 Wildcelery Herb in 9-10 month, transplant Siberian iris 10-40 strain/m2 October, class plant is anti-freezes the fibrous root prosperity for this, on the water surface, easily form view, become water surface green ecological band in winter.

The artificial floating wetland unit that above-mentioned steps is obtained is bundled into a complete artificial floating wetland unit as shown in Figure 2, and its concrete operations step is as follows:

The 4th step connected floating wetland unit structure: be connected by connection cord 6 between the modular construction, like this can so that modular construction can connect, separable; When floating wetland is installed, modular construction is simply connected into suitable scale with connection cord 6, drag to the target waters, according to the scale that needs floating wetland with ship, arbitrarily a plurality of modular constructions are bolted together with connection cord 6, can also be combined into ring-type, sheet, band shape etc. according to demand.

Fixing of floating wetland of the 5th step: the static line 5 with Φ 4-20mm connects framework 1-2 of lower floor and the iron foot stake 4 of squeezing into the 50-80cm of settling bed mud 0, iron foot stake 4 length 80-100cm, take aim at floating surely wetland unit structure, and, guarantee the degree of depth of the length of static line 5 greater than the flood level of waters 30-50 one chance according to the length that depth condition is regulated static line 5.When water level is low, rope is tied a knot to regulate suitable length, after water level raises, untiing the rope joint, prolong rope lengths, static line 5 is being tied a knot to regulate suitable length according to on-site actual situations.

Make up 15 mu above-mentioned artificial floating wetland in the lake in Chaohu, Anhui, and its water purification ability is monitored.Test shows the plant grew well of the floating wetland plantation of wind and wave resistance of the present invention, the fraction of coverage of the plant community of various combinations reaches 100%, only the fraction of coverage 2-4m edge, windward side plant is 40%-70%, and wherein the combination community biomass of water peanut, ditch millet, mater convolvulus, iris is the highest; Duration of test water peanut rhizome and combined plant, fishing net, rush bag form the thick 10cm of reaching left and right sides rhizome layer, and through typhoon and repeatedly high sea impact, floating wetland unit structure is intact, and plant community is firm, shows stronger capacity of anti-storm; The total nitrogen that floating wetland can be removed in the water body reaches 79.9%, and the nitric nitrogen clearance reaches 92.9%, and ammonia-N removal rate reaches 52.2%, and total tp removal rate reaches 73.5%, reduces COD in water body Mn and Chl.a and reaches 68.2% and 76.7% respectively.

In a word, artificial floating wetland intensity height provided by the invention, anti-current and stormy waves impact capacity are strong, do not influence characteristics such as river course shipping safety, and cost is low, and is easy for installation, and dismounting is easily; According to field demand, can make up the floating wetland of different scales, shape, handiness is big; The plant species of wetland is abundant, can realize all having the growth of plant, has prolonged the time scale of floating wetland to purification of water quality throughout the year; A little less than the plant interspecific competition, can set up compound group, and the detergency height is coordinated by the group of setting up.Therefore, the present invention is specially adapted to water and pollutes and eutrophication control, be particluarly suitable for water body is dark, be not suitable for recovering submerged plant eutrophic lake, river, reservoir and landscape water body plantation waterplant, reduction water nutrition load, purify water, improve water transparency, the embellishing surface view.

Claims

1. artificial floating wetland, it is characterized in that: described artificial floating wetland comprises floating wetland unit, is fixed in the pin stake of water body and the static line that floating wetland unit is connected and fixed on the pin stake; Detachably fixing between the described floating wetland unit by connection cord.

2. artificial floating wetland as claimed in claim 1, it is characterized in that: described floating wetland unit comprises carrier and carries intravital plant, described carrier is made of two-layer framework about the staggered fixed, and described two-layer framework up and down also is enclosed with reticulated structure outward respectively.

3. artificial floating wetland as claimed in claim 2 is characterized in that: described two-layer framework vertical interlaced is up and down fixed.

4. artificial floating wetland as claimed in claim 2 is characterized in that: also include back-up coat between the reticulated structure of described lower floor framework and its outer wrap.

5. artificial floating wetland as claimed in claim 2 is characterized in that: described two-layer framework up and down is the mao bamboon framework, and described year intravital plant is water peanut.

6. artificial floating wetland as claimed in claim 2 is characterized in that: the cancellated aperture of described upper strata framework is 2-4cm, and the cancellated aperture of described lower floor framework is 1-2cm.