CN2910919Y

CN2910919Y - Water surface grass blanket

Info

Publication number: CN2910919Y
Application number: CNU2006200433761U
Authority: CN
Inventors: 陈雪初; 孔海南; 孙扬才; 梁瑜; 张海春
Original assignee: Shanghai Jiaotong University
Current assignee: Shanghai Jiaotong University
Priority date: 2006-06-29
Filing date: 2006-06-29
Publication date: 2007-06-13
Anticipated expiration: 2016-06-29

Abstract

The utility model relates to a water surface grass tapestry comprising a shading net, a bamboo frame bound on the shading net, aquatic plants planted on the shading net and a cement sinker for fixing the shading net. The shading net is used as the basic material to fix the aquatic plant and the hygrophyte and impel them to form the water surface grass tapestry. A plurality of bamboo frames for providing buoyancy force are bound on the back of the shading net by nylon ropes fastened on the bamboo frames on the corners of the shading net, whose another end is tied with a cement sinker placed on the bottom of the water to fix the grass tapestry at a certain position in the water area and keep the grass tapestry static on the water surface. The utility model has the effect of greening water surface and the function of water purification. The use of shading net to shade the light can effectively restrain and wipe off the blue green algae and the planted aquatic plants on the shading net can purify the water as well as the landscape effect and the economic value.

Description

Water surface grass blanket

Technical field

The utility model relates to a kind of water surface grass blanket, and the waterplant of can planting also stably floats on the nature water surface, and having purifies water particularly removes the effect of harmful blue-green algae in the water, can also form pleasing green landscape waterborne simultaneously.Belong to field of environment engineering technology.

Background technology

In recent years, the body eutrophication problem in waters such as China Hu Ku is increasingly serious, and Taihu Lake, Dian Chi, Chaohu etc. all have been in the eutrophication state, and the Miyun Reservoir of Ceng Zuowei Beijing waterhead area also is forced to stop using because of algal bloom.The body eutrophication problem show as mainly that blue algae breeds unusually in the water, aquatic animals and plants mass mortality owing to anoxic, the water body blackening is fouled, meanwhile blue-green algae also discharges the algae toxin that toxic action is only second to Dioxins, cause tap water seedbed forfeiture water supply function, therefore how to suppress the task of top priority that blue-green algae in the water becomes the prevention and cure of pollution of storehouse, lake.Hover (bed) method is that the wawter bloom that develops rapidly is is in recent years prevented and treated method, this method is utilized floating islands such as plastic foam, directly absorb in the water nutritive salt such as nitrogen phosphorus water surface planting humidogene and waterplant, the key factor that causes the wawter bloom generation with removal, the shortcoming of this method is that cost is higher, and takes effect slowly owing to relying on absorbed nitrogen phosphorus to suppress algal tufa.On the other hand, the Artificial grass blanket is the afforestation product with application prospect that development in recent years is got up, it is lower to have cost, uses simply the characteristics of convenient management, can realize " instant putting; promptly receive promptly to walk ", practicality is very strong, discloses the synthetic careless blanket of the geotechnique who is used for afforestation and protecting slope of dam as utility model patent CN2343789Y, its primary structure is " adopt geosynthetics up and down, the centre accompanies grass-seed and nutrition ".But this series products is applied to the ground greening of sight spot, city, sub-district, family more, and is still useless in the precedent of water surface greening.

Because the essential factor of algal grown only, some scholars' propositions might suppress the blue-green algae growth and breeding by the physics light shading method under extremely low cost prerequisite both at home and abroad in recent years.Consider China's national situation, the structure of the Artificial grass blanket that is used for ground greening is in the past transformed, prevent and treat, be undoubtedly a kind of product and technology that has practical value to be applied to water surface greening and blue-green algae wawter bloom.

Summary of the invention

The purpose of this utility model is at the deficiencies in the prior art, a kind of water surface grass blanket is provided, also stably float on the nature water surface by the waterplant of planting, having purifies water particularly removes the effect of harmful blue-green algae in the water, can also form pleasing green landscape waterborne simultaneously.

For realizing such purpose, the water surface that the utility model provides grass blanket by the sunshade net, be strapped in the online several bamboo frame of sunshade, the cement sinker that is planted in the online waterplant of sunshade, fixed shading net constitutes.Adopt commercially available sunshade net as fixing aquatic and hygrophyte and impel it to form the base mateiral of water surface grass blanket, the shading rate of sunshade net＞60%, the several bamboo frame is bound so that buoyancy to be provided with nylon rope in the back side of sunshade net, on the bamboo frame that is positioned at each corner of sunshade net, tie nylon rope, the other end of nylon rope ties and is positioned over water-bed cement sinker, make water surface grass blanket be fixed on certain position of natural water area, and make careless blanket keep stationary state at the water surface.

Wherein said sunshade net can adopt whole throwing the net according to the real area of the water body of required covering, perhaps utilize nylon rope with several sunshade nets mutually the company of fastening form.

Wherein said cement sinker is a terrace with edge shape or square, heavy 20kg-30kg, and its top perforate is in order to the company's of fastening nylon rope.

Wherein said bamboo frame adopts blue or green bamboo or is raw material through the hollow ring of the dried bamboo of processed, uses the bamboo forelock between ring and the ring, adopts the nylon rope bondage to reinforce simultaneously, makes framework.The length of side of bamboo frame is 0.5～1m, the bamboo frame be spaced apart 1～2m.

The commercially available sunshade net that the utility model adopted is generally formed by nontoxic polyethylene fibre braiding, both had certain hole, can take root for plant, the growth of support plant materials, prevent that plant from sinking, have water surface shading performance again, thereby significantly cut down the key factor-incident light that causes harmful blue-green algae abnormality proliferation in the water, therefore can suppress and remove harmful blue-green algae in the water effectively.

Aquatic property or the humidogene plant that mater convolvulus, Wildcelery Herb, Scirpus tabernaemontani and watermifoil etc. can grow in natural water of can charging seed on the careless blanket provided by the utility model has landscape effect and economic worth; Simultaneously these plants have flourishing aquatic root system, for profitable strain and animalcule provide the microenvironment that is beneficial to growth and breeding, have given play to the holocoenotic water quality purification function of whole root system.

Water surface grass blanket provided by the utility model has both water surface afforestation effect and water quality purification function, particularly can reduce poisonous blue-green algae concentration in the water significantly by light-shading effect; Cost of manufacture is cheap simultaneously, and management is simple, and is extremely convenient, flexible during use, can reduce arbitrarily and combination according to the characteristics of using water body, can accomplish " instant putting promptly receives promptly to walk ", has extremely strong practicality.

Description of drawings

Fig. 1 is a structural representation of the present utility model.

Among Fig. 1,1 is the sunshade net, and 2 is the bamboo frame, and 3 is waterplant, and 4 is the cement sinker.

Embodiment

Below in conjunction with accompanying drawing the technical solution of the utility model is further described.

The structure of the utility model water surface grass blanket comprises sunshade net 1, is strapped in several bamboo frame 2 on the sunshade net 1, is planted in the waterplant 3 on the sunshade net 1, the cement sinker 4 of fixed shading net 1 as shown in Figure 1.

Described sunshade net 1 is the basis of water surface grass blanket, adopts the material of shading rate＞60%, and specification can be 3m * 10m, 8m * 20m, and 10 * 30m or the like decides according to the practical situation of the water body of required covering.Can adopt whole throwing the net, also can utilize nylon rope with several sunshade nets company of fastening mutually, to reach required water surface area.

So that buoyancy to be provided, described bamboo frame 2 is evenly distributed on the sunshade net 1, and a bamboo frame is all arranged on each corner of sunshade net 1 with nylon rope binding several bamboo frame 2 at the back side of sunshade net 1.The bamboo frame can adopt blue or green bamboo or be raw material through the hollow ring of the dried bamboo of processed, will use the bamboo forelock between ring and the ring, adopts the nylon rope bondage to reinforce simultaneously, makes framework.For guaranteeing the stability of water surface grass blanket, avoid easily under natural water area high sea condition, being fractureed because of the bamboo frame is excessive, consider that again cost of manufacture, the length of side of desirable bamboo frame are 0.5～1m simultaneously, the bamboo frame be spaced apart 1～2m.

The stationary installation of water surface grass blanket is a cement sinker 4.Tie nylon rope on the bamboo frame 2 that is positioned at sunshade net 1 each corner, the other end of nylon rope ties and is positioned over water-bed cement sinker 4, makes water surface grass blanket be fixed on certain position of natural water area.Cement sinker 4 is watered by cement and builds up terrace with edge shape or square, is generally 20kg-30kg and weighs, and perforate at an upper portion thereof is in order to the company's of fastening nylon rope.

At the end of spring and the beginning of summer, the waterplant 3 that directly charge seed on the water surface grass blanket mater convolvulus, Wildcelery Herb, Scirpus tabernaemontani and watermifoil etc. can grow in natural water, plant can take root, breed on the net in sunshade after about two weeks; After about one month, whole sunshade net is covered by plant, forms water surface grass blanket view, simultaneously because light-shading effect and the holocoenotic decontamination effect improving of root system that water surface grass blanket is produced, the propagation of blue-green algae in the water body of water surface grass blanket waters of living in is suppressed, and water quality improves.

Treat that quality recovery arrives after the state of health, water surface grass blanket can be removed from handle water body; Also can continue to retain in former water body, keep the green landscape of the water surface.

Embodiment

With length is 20 meters, and wide is 8 meters, and shading rate is that 75% sunshade net is a base mateiral, and the length of side made from blue or green ring is that 0.5 meter square bamboo frame is to float material, with nylon rope the bamboo frame is bound to sunshade and makes water surface grass blanket blank after online.The binding rule is: 1) a bamboo frame is respectively bound in four of the sunshade net corners; 2) vertically promptly bind a bamboo frame every about 2m, promptly longitudinally in each row 8 bamboo frames are arranged all along sunshade net longer sides direction; 3) laterally promptly bind a bamboo frame every about 1m, promptly along laterally in each row 5 bamboo frames being arranged all along sunshade net short side direction.The company's of fastening nylon rope under the bamboo frame of four corners, the other end of nylon rope are fastened the cement sinker that connects 20 kilogram weights that prepare in advance.

The first tenday period of a month in May, this structure is dropped in the small-sized landscape lake of Shanghai City university, on this structure, throw in rye grass seed, hollow vegetable seed and little strain watermifoil; Rye grass-seed after one week, hollow vegetable seed all germinates; Two all plants grow gradually; This body structure surface is entirely plant and covers the green landscape of formation water surface grass blanket after one month.

This landscape lake total area 500m ³, depth of water 2m, before throwing in water surface grass blanket, algae has begun a large amount of breedings in this lake, it is green that lake water is, and with the stench flavor of algae, lake water water quality: ammonia nitrogen is 0.7mg/L, and phosphorus is 0.2mg/L, COD is 14mg/L, and turbidity is 50 °, transparency 0.2m, and blue-green algae density reaches 2.7 * 10 ⁵N/mL.

Drop into water surface grass blanket after one month this lake water matter obviously improve, algae is withered away, lake water water quality rises to: ammonia nitrogen is 0.4mg/L, phosphorus is 0.1mg/L, COD is 7mg/L, turbidity is 20 °, transparency 0.6m, blue-green algae density drops to 4.2 * 10 ⁴N/mL.

Mid-June, the mater convolvulus on the harvesting water surface grass blanket is gathered in the crops 7 kilograms of fresh weights altogether.

In the first tenday period of a month in September, water pollutant concentration maintains lower level all the time, and ammonia nitrogen is 0.43mg/L, and phosphorus is 0.08mg/L, and COD is 6mg/L, and turbidity is 17 °, transparency 0.7m, and blue-green algae density is 1.2 * 10 ⁴N/mL.After this this water surface grass blanket is removed, be used for the purification that beautifies of other water bodys of periphery.

Claims

1, a kind of water surface grass blanket, it is characterized in that comprising sunshade net (1), be strapped in bamboo frame (2) on the sunshade net (1), be planted in the waterplant (3) on the sunshade net (1) and the cement sinker (4) of fixed shading net (1), shading rate＞60% of described sunshade net (1), several bamboo frame (2) is bound so that buoyancy to be provided with nylon rope in the back side of sunshade net (1), on the bamboo frame (2) that is positioned at each corner of sunshade net (1), tie nylon rope, the other end of nylon rope ties and is positioned over water-bed cement sinker (4), makes water surface grass blanket be fixed on certain position of natural water area.

2, according to the water surface of claim 1 grass blanket, it is characterized in that described sunshade net (1) adopts whole throwing the net according to the real area of the water body of required covering, perhaps utilize nylon rope with several sunshade nets (1) mutually the company of fastening form.

3, according to the water surface grass blanket of claim 1, it is characterized in that described cement sinker (4) is terrace with edge shape or square, heavy 20kg-30kg, its top perforate is in order to the company's of fastening nylon rope.

4, according to the water surface of claim 1 grass blanket, it is characterized in that described bamboo frame (2) adopts blue or green bamboo or be raw material through the hollow ring of the dried bamboo of processed, use the bamboo forelock between ring and the ring, adopt nylon rope bondage reinforcing simultaneously, make framework.

5, according to the water surface of claim 4 grass blanket, the length of side that it is characterized in that described bamboo frame (2) is 0.5～1m, bamboo frame (2) be spaced apart 1～2m.