CN106638339B - Algae blanket and preparation method thereof - Google Patents

Abstract

The invention relates to the field of environmental protection, in particular to an algal blanket and a preparation method thereof. An algal blanket, from top to bottom, comprises an upper protective fiber fabric layer, an algae seed layer, a matrix layer, a shaping support net and a bottom adhesive tape, and the upper protective fiber fabric layer, the shaping support mesh, and the bottom adhesive tape are stitched. Thread stitched or bonded with modified starch glue, the matrix layer is bonded with the shaping support net, the algae seed layer is bonded with the matrix layer, and the bottom bonding tape is a fiber fabric, the two sides of which are respectively wider than the two sides of the shaping support net 2cm, as the adhesive tape for bonding the algal blankets to each other. A method for preparing an algal blanket, comprising the following steps: (1) preparing a nutrient solution; (2) preparing a substrate; (3) preparing a desert algae; (4) preparing an algal blanket.

Description

A kind of algal blanket and preparation method thereof

technical field

The invention relates to the field of environmental protection, in particular to an algal blanket and a preparation method thereof.

Background technique

With the expansion of desertification and the emergence of a large number of bare lands formed by transportation, mining and construction projects, governments and experts from various disciplines are seeking better measures to control quicksand, soil erosion, poor land and bare land.

A large number of engineering, chemical, biological and comprehensive measures have been adopted, but the engineering methods are time-sensitive, and the chemical reagents are difficult to reuse the land.

Biological integrated management is the most effective way to control desertification and improve the environment, but at present this field is limited to the optimal selection and rational allocation of higher plants. Especially in the desert area below 200mm, high-density large-scale afforestation, although the ecological environment is improved for a short time, but the plantation quickly declines due to lack of water, resulting in further ecological degradation and waste of resources. Water carrying capacity is the key to the existence of vegetation types under different ecological conditions, and microbial crusts require relatively little water, which can achieve full coverage and reduce soil erosion to zero. The vegetation coverage of desert areas is composed of vascular plants ≤30% (Townshend et al., 1986), while the coverage of microbiological crusts is ≥70% (Belnap et al., 1994). Therefore, the research on microbial crusts in desert areas around the world has attracted much attention, and extensive and in-depth research has been carried out on the composition, structural succession, and function of microbial crusts at various levels, and it has been tried to be applied to quicksand fixation and other aspects. . Academician Wei Jiangchun proposed the desert biological carpet project, and Hu Chunxiang et al. proposed the "fixation method of desert algae to quicksand" (CN1282511A): spraying the screened algal species directly on the quicksand to create artificial crusts. "A method of biological immobilization of quicksand and restoration of desertified land (CN1561698A)" proposed by Liu Yongding et al. combines desert algae with herbs and shrubs to immobilize quicksand. The research and application of the above-mentioned microbial crusts are limited to the direct application of the crusts themselves and their microorganisms. Whether it is quicksand or engineering bare land, its physical and chemical properties are harsh for biological survival, and it is difficult to grow microorganisms by spraying or spreading them directly on the surface. If the desert algae is combined with its growth substrate to form an artificial desert algae growth system, the desert algae can grow in the adapted substrate to form a growth microenvironment, and the ability of desert algae to survive, multiply and apply can be enhanced by artificially regulating the growth substrate of desert algae. Improve the efficiency of desert algae management of the ecological environment. At present, vegetation blankets and biological blankets are also used in ecological construction, but these biological blankets are mainly artificial biological crusts made of herbs and algae. There is no patent document for algal blankets.

SUMMARY OF THE INVENTION

The purpose of the present invention is to provide a kind of algal blanket and its preparation method in view of the deficiencies of the existing application of algae treatment ecological environment technology, and the application of algae blanket full coverage or determinant laying and other methods to control the biology of quicksand, bad land and engineering bare land The method is suitable for rapid and long-term management of bare land.

Technical scheme: an algal blanket, from top to bottom, comprises an upper protective fiber fabric layer, an algal seed layer, a matrix layer, a shaping support net and a bottom adhesive tape,

The upper protective fiber fabric layer, the shaping support net, and the bottom layer adhesive tape are sewed with stitch-bonding thread or bonded with modified starch glue,

The matrix layer is bonded with the shaping support mesh,

The algae seed layer is bonded to the matrix layer,

The bottom layer adhesive tape is a fiber fabric, the two sides of which are respectively 2 cm wider than the two sides of the shaping support net, and are used as the adhesive tape for mutual bonding of the algal blankets.

Further, the thickness of the upper protective fiber fabric layer is 0.2-0.3 mm.

Further, the thickness of the algae seed layer is 0.2-0.3 mm.

Further, the thickness of the matrix layer is 2.4-2.6 mm.

Further, the thickness of the shaping support net is 2.0-2.5 mm.

Further, the thickness of the bottom layer adhesive tape is 0.2-0.3 mm.

A preparation method of the above-mentioned algal blanket, comprising the following steps:

(1) Preparation of nutrient solution

(11) Equipped with nutrients:

Weigh out 0.8-2.5 parts by mass of sodium nitrate, 0.02-0.05 parts by mass of dipotassium hydrogen phosphate, 0.06-0.09 parts by mass of magnesium sulfate, 0.02-0.05 parts by mass of calcium chloride, 0.004-0.008 parts by mass of citric acid, and 0.004-0.008 parts by mass Ferric ammonium citrate, 0.001-0.003 mass part of ethylenediaminetetraacetic acid disodium salt, 0.01-0.04 mass part of sodium carbonate, the above raw materials are uniformly mixed to obtain a mixed powder, which is for later use;

(12) Equipped with trace element solution

2.86 parts by mass of H ₃ BO ₃ , 1.81 parts by mass of MnCl ₂ ·H ₂ O, 0.222 parts by mass of ZnSO ₄ ·7H ₂ O, 0.079 parts by mass of CuSO ₄ ·5H ₂ O, 0.390 parts by mass of Na ₂ MoO ₄ ·2H ₂ O , 0.049 parts by mass of Co(NO ₃ ) ₂ ·6H ₂ O was added to an appropriate amount of water to make a solution of trace elements of 1000 parts by mass,

(13) prepare the mixed powder obtained in step (11) and the trace element solution obtained in step (12) in a mass ratio (1.4-1.8): 1, mix them evenly, and prepare a nutrient solution;

(2) Preparation of substrate

(21) Mix 2.0 parts by mass of modified cellulose, 0.1 part by mass of modified starch, 20.0 parts by mass of cotton wool fiber, 1.0 part by mass of the nutrient solution obtained in step (1), 10.0 parts by mass of attapulgite powder and 66.9 parts by mass of water get a mixture;

(22) the mixture obtained in step (21) is evenly stirred to make a colloidal material, that is, a matrix is obtained;

(3) Preparation of desert algae

(31) Obtaining algae species

(311) grinding the soil crusts with desert algae in arid areas, immersing them in sterile water and then culturing them, picking out the cultured algal species with a dissecting needle, sterilizing them on a sterile glass slide, and inserting them into an agar petri dish, without The bacteria are cultured for 5 to 10 days to obtain algal species after separation and purification;

(312) inserting the separated and purified algae obtained in step (311) into a culture flask containing the culture solution obtained in step (1), and then at a temperature of 22 to 35° C., a light intensity of 3500 Lx, and a ventilation rate of 3 L/min. Under conditions, cultured for 10 to 20 days to obtain algae seeds;

(32) Preparation of algal slime

(321) inserting the algal seeds obtained in step (31) into a culture bottle containing the nutrient solution obtained in step (1), the inoculation ratio is 0.2-0.5 grams of algal seeds per liter of nutrient solution, and at a temperature of 22-35 ° C, light Under the condition of strong 3500Lx and ventilation volume of 3L/min, the desert algae can be obtained by aerating and cultivating algae for 10 to 20 days;

(322) pouring the desert algae obtained in step (321) into a filter screen, filtering to obtain algal slurry, and then centrifuging the algal slurry through a centrifuge to remove water to make algal slurry;

(4) Preparation of algal blanket

(41) Flatten the plant fiber fabric to make it a bottom adhesive tape,

(42) the plant fiber web is spread on the bottom layer adhesive tape obtained in step (41) to form a shaping support net, and both sides of the bottom layer adhesive tape are respectively 2cm wide with both sides of the shaping support net;

(43) rolling the matrix obtained in step (2) onto the shaping support net to form a matrix layer;

(44) the algal mud obtained in step (3) is evenly sprayed or coated on the matrix layer to form an algal seed layer;

(45) covering the plant fiber fabric on the upper side of the algae seed layer to make it an upper protective fabric layer;

(46) The upper protective fiber fabric layer, the shaped support net with algae species and matrix, and the bottom layer adhesive tape are sewed or bonded together to form a whole, and the algal blanket is obtained after drying in the shade.

Beneficial effects: The algal blanket and its preparation method disclosed in the present invention have the following beneficial effects:

1. The fiber net is used as the shaped support net, and various materials such as desert algae and modified plant cellulose water-retaining materials are processed through the production line at one time. Spreading the algal blanket on the ground can form microbial crusts, cover the ground, prevent quicksand, maintain soil and water, store surface moisture, realize the solidification of the flowing surface, treat bare ground in harsh environments, and reduce water and wind erosion;

2. The algal blanket can be applied to the treatment of moving sand, hillsides, cliffs, engineering bare land, etc. in arid areas. It plays a good role in windbreak and sand fixation, soil and water conservation and disaster reduction.

Description of drawings

Fig. 1 is the structural representation of a kind of algal blanket disclosed by the present invention;

Fig. 2 is the flow chart of the preparation method of a kind of algal blanket disclosed by the present invention;

in:

1- The upper protective fiber fabric layer 2- Algal seed layer 3 - Matrix layer 4-Styling support net 5- Bottom layer adhesive tape

Detailed ways:

The specific embodiments of the present invention will be described in detail below.

Specific Example 1

As shown in Figure 1, a kind of algal blanket, from top to bottom, comprises an upper protective fiber fabric layer 1, an algal seed layer 2, a matrix layer 3, a shaping support net 4 and a bottom layer adhesive tape 5,

The upper protective fiber fabric layer 1, the shaping support net 4, and the bottom adhesive tape 5 are sewn together with stitching threads or bonded with modified starch glue.

The matrix layer 3 is bonded to the shaping support net 4,

The algae seed layer 2 is bonded to the matrix layer 3,

The bottom layer adhesive tape 5 is a fiber fabric, the two sides of which are respectively 2 cm wider than the two sides of the shaping support net 4, as the adhesive tape for mutual bonding of the algal blankets.

Further, the thickness of the upper protective fiber fabric layer 1 is 0.2 mm. The upper protective fiber fabric layer 1 is a degradable plant fiber fabric, which is a single-layer or multi-layer plant fiber fabric. The protection fiber fabric requires a life span of more than 30 days, protects the algae and its substrate, and is conducive to the growth of the algae.

Further, the thickness of the algae seed layer 2 is 0.2 mm. Algae species are a variety of algae combinations adapted to the climatic conditions of the project area. In the arid desert areas of my country, the main species are Microcystheca sp., Pseudocladium javanica, Monostheca, Nostoc, S. spp. and Protococcus. The constructive algal species of desert algae are Microsphingomyces sp. and Pseudomonas javanica, which account for 60%-90% of the algal species.

Further, the thickness of the base layer 3 is 2.4 mm. It is a modified cellulose polymer water-absorbing material, which plays the role of water absorption and water retention, and provides water, nutrients and implantation beds for algae.

Further, the thickness of the shaping support net 4 is 2.0 mm. The shaping support net 4 is a vegetable fiber net.

Further, the thickness of the bottom layer adhesive tape 5 is 0.2 mm. The bottom layer adhesive tape 5 is a degradable plant fiber fabric, which is a single-layer plant fiber fabric. The adhesive tape requires a life span of more than 30 days to protect the algae and its substrate, which is conducive to the growth of the algae.

As shown in Figure 2, a preparation method of the above-mentioned algal blanket, comprising the following steps:

(1) Preparation of nutrient solution

(11) Equipped with nutrients:

Weigh 0.8 part by mass of sodium nitrate, 0.02 part by mass of dipotassium hydrogen phosphate, 0.06 part by mass of magnesium sulfate, 0.02 part by mass of calcium chloride, 0.004 part by mass of citric acid, 0.004 part by mass of ferric ammonium citrate, and 0.001 part by mass of EDTA Disodium salt, 0.01 mass part of sodium carbonate, the above-mentioned raw materials are mixed uniformly to obtain mixed powder, which is for subsequent use;

(12) Equipped with trace element solution

2.86 parts by mass of H ₃ BO ₃ , 1.81 parts by mass of MnCl ₂ ·H ₂ O, 0.222 parts by mass of ZnSO ₄ ·7H ₂ O, 0.079 parts by mass of CuSO ₄ ·5H ₂ O, 0.390 parts by mass of Na ₂ MoO ₄ ·2H ₂ O , 0.049 parts by mass of Co(NO ₃ ) ₂ ·6H ₂ O was added to an appropriate amount of water to make a solution of trace elements of 1000 parts by mass,

(13) prepare the mixed powder obtained in step (11) and the trace element solution obtained in step (12) in a mass ratio of 1.4:1, mix them evenly, and prepare a nutrient solution;

(2) Preparation of substrate

(21) Mix 2.0 parts by mass of modified cellulose, 0.1 part by mass of modified starch, 20.0 parts by mass of cotton wool fiber, 1.0 part by mass of the nutrient solution obtained in step (1), 10.0 parts by mass of attapulgite powder and 66.9 parts by mass of water get a mixture;

(22) the mixture obtained in step (21) is evenly stirred to make a colloidal material, that is, a matrix is obtained;

(3) Preparation of desert algae

(31) Obtaining algae species

(311) grinding the soil crust with desert algae in the arid area, immersing it in sterile water, and then culturing, picking out the cultured algal species with a dissecting needle, sterilizing them on a sterile glass slide, and inserting them into agar for culture Dish, aseptically cultured for 5 days to obtain algal species after separation and purification;

(312) inserting the separated and purified algae obtained in step (311) into a culture flask containing the culture solution obtained in step (1), then at a temperature of 22°C, light intensity of 3500Lx, and ventilation rate of 3L/min under the conditions , cultivated for 10 days to obtain algal seeds;

(32) Preparation of algal slime

(321) insert the algal seed obtained in step (31) into the culture bottle containing the nutrient solution obtained in step (1), the inoculation ratio is 0.2 grams of algal seed per liter of nutrient solution, at a temperature of 22 ° C, light intensity 3500Lx, ventilation Under the condition of 3L/min, the desert algae was obtained by cultivating algae in aeration for 10 days;

(322) pouring the desert algae obtained in step (321) into a filter screen, filtering to obtain algal slurry, and then centrifuging the algal slurry through a centrifuge to remove water to make algal slurry;

(4) Preparation of algal blanket

(41) Flatten the plant fiber fabric to make it a bottom adhesive tape,

(42) the plant fiber web is spread on the bottom layer adhesive tape obtained in step (41) to form a shaping support net, and both sides of the bottom layer adhesive tape are respectively 2cm wide with both sides of the shaping support net;

(43) rolling the matrix obtained in step (2) onto the shaping support net to form a matrix layer;

(44) the algal mud obtained in step (3) is evenly sprayed or coated on the matrix layer to form an algal seed layer;

(45) covering the plant fiber fabric on the upper side of the algae seed layer to make it an upper protective fabric layer;

(46) The upper protective fiber fabric layer, the shaped support net with algae species and matrix, and the bottom layer adhesive tape are sewed together to form a whole, and the algal blanket is obtained after drying in the shade.

Specific embodiment 2

An algal blanket, from top to bottom, comprises an upper protective fiber fabric layer 1, an algae seed layer 2, a matrix layer 3, a shaping support net 4 and a bottom layer adhesive tape 5,

The upper protective fiber fabric layer 1, the shaping support net 4, and the bottom adhesive tape 5 are sewn together with stitching threads or bonded with modified starch glue.

The matrix layer 3 is bonded to the shaping support net 4,

The algae seed layer 2 is bonded to the matrix layer 3,

The bottom layer adhesive tape 5 is a fiber fabric, the two sides of which are respectively 2 cm wider than the two sides of the shaping support net 4, as the adhesive tape for mutual bonding of the algal blankets.

Further, the thickness of the upper protective fiber fabric layer 1 is 0.3 mm. The upper protective fiber fabric layer 1 is a degradable plant fiber fabric, which is a single-layer or multi-layer plant fiber fabric. The protection fiber fabric requires a life span of more than 30 days, protects the algae and its substrate, and is conducive to the growth of the algae.

Further, the thickness of the algae seed layer 2 is 0.3 mm. Algae species are a variety of algae combinations adapted to the climatic conditions of the project area. In the arid desert areas of my country, the main species are Microcythenia encasei, Pseudocladium javanica, Monospermia, Nostoc, S. spp and Protococcus. The algal species of desert algae are Microsphingomyces sp. and Pseudomonas javanica, which account for 60% to 90% of the algal species.

Further, the thickness of the base layer 3 is 2.6 mm. It is a modified cellulose polymer water-absorbing material, which plays the role of water absorption and water retention, and provides water, nutrients and implantation beds for algae.

Further, the thickness of the shaping support net 4 is 2.5mm. The shaping support net 4 is a vegetable fiber net.

Further, the thickness of the bottom layer adhesive tape 5 is 0.3 mm. The bottom layer adhesive tape 5 is a degradable plant fiber fabric, which is a single-layer plant fiber fabric. The adhesive tape requires a life span of more than 30 days to protect the algae and its substrate, which is conducive to the growth of the algae.

A preparation method of the above-mentioned algal blanket, comprising the following steps:

(1) Preparation of nutrient solution

(11) Equipped with nutrients:

Weigh 2.5 parts by mass of sodium nitrate, 0.05 part by mass of dipotassium hydrogen phosphate, 0.09 part by mass of magnesium sulfate, 0.05 part by mass of calcium chloride, 0.008 part by mass of citric acid, 0.008 part by mass of ferric ammonium citrate, and 0.003 part by mass of EDTA Disodium salt and 0.04 parts by mass of sodium carbonate, the above-mentioned raw materials are mixed uniformly to obtain a mixed powder, which is for subsequent use;

(12) Equipped with trace element solution

2.86 parts by mass of H ₃ BO ₃ , 1.81 parts by mass of MnCl ₂ ·H ₂ O, 0.222 parts by mass of ZnSO ₄ ·7H ₂ O, 0.079 parts by mass of CuSO ₄ ·5H ₂ O, 0.390 parts by mass of Na ₂ MoO ₄ ·2H ₂ O , 0.049 parts by mass of Co(NO ₃ ) ₂ ·6H ₂ O was added to an appropriate amount of water to make a solution of trace elements of 1000 parts by mass,

(13) prepare the mixed powder obtained in step (11) and the trace element solution obtained in step (12) in a mass ratio of 1.8:1, mix them evenly, and prepare a nutrient solution;

(2) Preparation of substrate

(21) Mix 2.0 parts by mass of modified cellulose, 0.1 part by mass of modified starch, 20.0 parts by mass of cotton wool fiber, 1.0 part by mass of the nutrient solution obtained in step (1), 10.0 parts by mass of attapulgite powder and 66.9 parts by mass of water get a mixture;

(22) the mixture obtained in step (21) is evenly stirred to make a colloidal material, that is, a matrix is obtained;

(3) Preparation of desert algae

(31) Obtaining algae species

(311) grinding the soil crusts with desert algae in arid areas, immersing them in sterile water and then culturing them, picking out the cultured algal species with a dissecting needle, sterilizing them on a sterile glass slide, and inserting them into an agar petri dish, without The bacteria were cultured for 10 days to obtain the algal species after separation and purification;

(312) inserting the separated and purified algae obtained in step (311) into a culture flask containing the culture solution obtained in step (1), then at a temperature of 35°C, light intensity of 3500Lx, and ventilation rate of 3L/min under the conditions , cultivated for 20 days to obtain algal seeds;

(32) Preparation of algal slime

(321) insert the algae seed obtained in step (31) into the culture flask that is equipped with the nutrient solution obtained in step (1), the inoculation ratio is 0.5 grams of algae seed per liter of nutrient solution, at a temperature of 35°C, light intensity 3500Lx, ventilation Under the condition of 3L/min, the desert algae was obtained by cultivating the algae in aeration for 20 days;

(322) pouring the desert algae obtained in step (321) into a filter screen, filtering to obtain algal slurry, and then centrifuging the algal slurry through a centrifuge to remove water to make algal slurry;

(4) Preparation of algal blanket

(41) Flatten the plant fiber fabric to make it a bottom adhesive tape,

(42) the plant fiber web is spread on the bottom layer adhesive tape obtained in step (41) to form a shaping support net, and both sides of the bottom layer adhesive tape are respectively 2cm wide with both sides of the shaping support net;

(43) rolling the matrix obtained in step (2) onto the shaping support net to form a matrix layer;

(44) the algal mud obtained in step (3) is evenly sprayed or coated on the matrix layer to form an algal seed layer;

(45) covering the plant fiber fabric on the upper side of the algae seed layer to make it an upper protective fabric layer;

(46) Bonding the upper protective fiber fabric layer, the shaped support net with algae species and matrix, and the bottom layer adhesive tape together to form a whole, and the algal blanket is obtained after drying in the shade.

Specific embodiment 3

An algal blanket, from top to bottom, comprises an upper protective fiber fabric layer 1, an algae seed layer 2, a matrix layer 3, a shaping support net 4 and a bottom layer adhesive tape 5,

The upper protective fiber fabric layer 1, the shaping support net 4, and the bottom adhesive tape 5 are sewn together with stitching threads or bonded with modified starch glue.

The matrix layer 3 is bonded to the shaping support net 4,

The algae seed layer 2 is bonded to the matrix layer 3,

The bottom layer adhesive tape 5 is a fiber fabric, the two sides of which are respectively 2 cm wider than the two sides of the shaping support net 4, as the adhesive tape for mutual bonding of the algal blankets.

Further, the thickness of the upper protective fiber fabric layer 1 is 0.25 mm. The upper protective fiber fabric layer 1 is a degradable plant fiber fabric, which is a single-layer or multi-layer plant fiber fabric. The protection fiber fabric requires a life span of more than 30 days, protects the algae and its substrate, and is conducive to the growth of the algae.

Further, the thickness of the algae seed layer 2 is 0.25mm. Algae species are a variety of algae combinations adapted to the climatic conditions of the project area. In the arid desert areas of my country, the main species are Microcystheca sp., Pseudocladium javanica, Monostheca, Nostoc, S. spp. and Protococcus. The building algal species of desert algae are Microsphingomyces sp. and Pseudomonas javanica, which account for 60%-90% of the algal species.

Further, the thickness of the base layer 3 is 2.5 mm. It is a modified cellulose polymer water-absorbing material, which plays the role of water absorption and water retention, and provides water, nutrients and implantation beds for algae.

Further, the thickness of the shaping support mesh is 2.3mm. The shaped support net is a vegetable fiber net.

Further, the thickness of the bottom layer adhesive tape 5 is 0.25 mm. The bottom layer adhesive tape 5 is a degradable plant fiber fabric, which is a single-layer plant fiber fabric. The adhesive tape requires a life span of more than 30 days to protect the algae and its substrate, which is conducive to the growth of the algae.

A preparation method of the above-mentioned algal blanket, comprising the following steps:

(1) Preparation of nutrient solution

(11) Equipped with nutrients:

Weigh 1 part by mass of sodium nitrate, 0.04 part by mass of dipotassium hydrogen phosphate, 0.07 part by mass of magnesium sulfate, 0.04 part by mass of calcium chloride, 0.006 part by mass of citric acid, 0.006 part by mass of ferric ammonium citrate, and 0.002 part by mass of EDTA Disodium salt, 0.03 parts by mass of sodium carbonate, the above-mentioned raw materials are mixed uniformly to obtain a mixed powder, which is for subsequent use;

(12) Equipped with trace element solution

2.86 parts by mass of H ₃ BO ₃ , 1.81 parts by mass of MnCl ₂ ·H ₂ O, 0.222 parts by mass of ZnSO ₄ ·7H ₂ O, 0.079 parts by mass of CuSO ₄ ·5H ₂ O, 0.390 parts by mass of Na ₂ MoO ₄ ·2H ₂ O , 0.049 parts by mass of Co(NO ₃ ) ₂ ·6H ₂ O was added to an appropriate amount of water to make a solution of trace elements of 1000 parts by mass,

(13) prepare the mixed powder obtained in step (11) and the trace element solution obtained in step (12) in a mass ratio of 1.6:1, mix them evenly, and prepare a nutrient solution;

(2) Preparation of substrate

(21) Mix 2.0 parts by mass of modified cellulose, 0.1 part by mass of modified starch, 20.0 parts by mass of cotton wool fiber, 1.0 part by mass of the nutrient solution obtained in step (1), 10.0 parts by mass of attapulgite powder and 66.9 parts by mass of water get a mixture;

(22) the mixture obtained in step (21) is evenly stirred to make a colloidal material, that is, a matrix is obtained;

(3) Preparation of desert algae

(31) Obtaining algae species

(311) grinding soil crusts with desert algae in arid areas, immersing them in sterile water and then culturing them, picking out the cultured algal species with a dissecting needle, sterilizing them on a sterile glass slide, and inserting them into agar for culture Dish, aseptically cultured for 8 days to obtain algal species after separation and purification;

(312) inserting the separated and purified algae obtained in step (311) into a culture flask containing the culture solution obtained in step (1), and then at a temperature of 30° C., light intensity of 3500Lx, and ventilation under the conditions of 3L/min , cultivated for 15 days to obtain algae seeds;

(32) Preparation of algal slime

(321) insert the algal seed obtained in step (31) into the culture bottle that is equipped with the nutrient solution obtained in step (1), the inoculation ratio is 0.3 grams of algal seed per liter of nutrient solution, at a temperature of 30 ° C, light intensity 3500Lx, ventilation Under the condition of 3L/min, the desert algae was obtained by cultivating algae in aeration for 15 days;

(322) pouring the desert algae obtained in step (321) into a filter screen, filtering to obtain algal slurry, and then centrifuging the algal slurry through a centrifuge to remove water to make algal slurry;

(4) Preparation of algal blanket

(41) Flatten the plant fiber fabric to make it a bottom adhesive tape,

(42) the plant fiber web is spread on the bottom layer adhesive tape obtained in step (41) to form a shaping support net, and both sides of the bottom layer adhesive tape are respectively 2cm wide with both sides of the shaping support net;

(43) rolling the matrix obtained in step (2) onto the shaping support net to form a matrix layer;

(44) the algal mud obtained in step (3) is evenly sprayed or coated on the matrix layer to form an algal seed layer;

(45) covering the plant fiber fabric on the upper side of the algae seed layer to make it an upper protective fabric layer;

(46) Bonding the upper protective fiber fabric layer, the shaped support net with algae species and matrix, and the bottom layer adhesive tape together to form a whole, and the algal blanket is obtained after drying in the shade.

The embodiments of the present invention have been described in detail above. However, the present invention is not limited to the above-mentioned embodiments, and various changes can be made within the scope of knowledge possessed by those skilled in the art without departing from the spirit of the present invention.

Claims (1)

1. An algae blanket is characterized by sequentially comprising an upper layer protective fiber fabric layer, an algae seed layer, a matrix layer, a shaping support net and a bottom layer adhesive tape from top to bottom,

the upper layer protective fiber fabric layer, the shaping support net and the bottom layer bonding belt are sewn by adopting sewing threads or bonded by adopting modified starch glue,

the substrate layer is bonded with the shaping support net,

the algae seed layer is adhered to the matrix layer,

the bottom layer bonding tape is a fiber fabric, and two sides of the bottom layer bonding tape are respectively wider than two sides of the shaping support net by 2cm and are used as bonding tapes for bonding the algal blankets; the thickness of the upper protective fiber fabric layer is 0.2-0.3 mm; the thickness of the algae seed layer is 0.2-0.3 mm; the thickness of the substrate layer is 2.4-2.6 mm; the thickness of the shaping support net is 2.0-2.5 mm; the thickness of the bottom layer adhesive tape is 0.2-0.3 mm;

the preparation method of the algal blanket comprises the following steps:

(1) preparation of nutrient solution

(11) Preparing nutrients:

weighing 0.8-2.5 parts by mass of sodium nitrate, 0.02-0.05 part by mass of dipotassium hydrogen phosphate, 0.06-0.09 part by mass of magnesium sulfate, 0.02-0.05 part by mass of calcium chloride, 0.004-0.008 part by mass of citric acid, 0.004-0.008 part by mass of ferric ammonium citrate, 0.001-0.003 part by mass of disodium ethylenediamine tetraacetic acid and 0.01-0.04 part by mass of sodium carbonate, and uniformly mixing the raw materials to obtain mixed powder for later use;

(12) preparing a solution of trace elements

2.86 parts by mass of H₃BO₃1.81 parts by mass of MnCl₂·H₂O, 0.222 parts by mass of ZnSO₄·7H₂O, 0.079 parts by mass of CuSO₄·5H₂O, 0.390 part by mass of Na₂MoO₄·2H₂O, 0.049 part by mass of Co (NO)₃)₂·6H₂Adding O into a proper amount of water to prepare 1000 parts by mass of trace element solution,

(13) mixing the mixed powder obtained in the step (11) with the trace element solution obtained in the step (12) according to the mass ratio of (1.4-1.8): 1, preparing and uniformly mixing to prepare nutrient solution;

(2) preparation of the substrate

(21) Uniformly mixing 2.0 parts by mass of modified cellulose, 0.1 part by mass of modified starch, 20.0 parts by mass of cotton wool fibers, 1.0 part by mass of the nutrient solution obtained in the step (1), 10.0 parts by mass of attapulgite powder and 66.9 parts by mass of water to obtain a mixture;

(22) uniformly stirring the mixture obtained in the step (21) to prepare a colloid material, namely obtaining a matrix;

(3) preparation of desert algae

(31) Algal species acquisition

(311) Grinding the soil crust with desert algae in arid region, soaking in sterile water, culturing, picking out cultured algae seeds with dissecting needle, sterilizing on sterile glass slide,

inoculating into an agar culture dish, and performing aseptic culture for 5-10 days to obtain separated and purified algae seeds;

(312) inoculating the separated and purified algae obtained in the step (311) into a culture bottle containing the culture solution obtained in the step (1), then, at the temperature of 22-35 ℃,

culturing for 10-20 days under the conditions that the light intensity is 3500Lx and the ventilation volume is 3L/min to obtain algae seeds;

(32) preparation of algae mud

(321) Inoculating the algae seeds obtained in the step (31) into a culture bottle filled with the nutrient solution obtained in the step (1), inoculating algae seeds in a proportion of 0.2-0.5 g per liter of nutrient solution, and performing aerobic culture on algae groups for 10-20 days at the temperature of 22-35 ℃, the light intensity of 3500Lx and the ventilation volume of 3L/min to obtain desert algae;

(322) pouring the desert algae obtained in the step (321) into a filter sieve, filtering to obtain algae slurry, and centrifuging the algae slurry through a centrifuge to remove water to prepare algae mud;

(4) preparation of algal blanket

(41) The plant fiber fabric is spread flatly to form a bottom layer binding belt,

(42) flatly paving the plant fiber net on the bottom layer bonding belt obtained in the step (41) to form a shaping support net, wherein the width of two sides of the bottom layer bonding belt is 2cm with that of two sides of the shaping support net;

(43) spreading the substrate obtained in the step (2) on a shaping support net to form a substrate layer;

(44) uniformly spraying or coating the algae mud obtained in the step (3) on the matrix layer to form an algae seed layer;

(45) covering the upper side of the algae seed layer with a plant fiber fabric to form an upper protective fabric layer;

(46) sewing or adhering the upper protective fiber fabric layer, the shaping support net with the algae seeds and the matrix and the bottom adhesive tape together to form a whole, and drying in the shade to obtain the algae blanket.

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