CN106630186A - Agricultural waste/immobilized denitrifying bacteria mixed ecological bag and system for slope protection - Google Patents

Abstract

The invention discloses an ecological bag and system for mixing and immobilizing denitrification bacteria with agricultural waste for slope protection. The ecological bag is filled with agricultural waste, plant seeds (2) and plant soil (3). Denitrification bacteria are fixed on the agricultural waste, medium sand and coarse sand are added to the planting soil, and plants (4) are planted on the bag body (5). The system of this ecological bag is mainly formed by interlacing stacking of ecological bag one (51) and ecological bag two (52), each layer of ecological bags and every two ecological bags are sandwiched between thick cotton ropes (7), the same layer A soft material pad (6) is sandwiched between the ecological bags. The invention utilizes the agricultural waste as a resource, combines with the immobilized denitrification bacteria group, strengthens the water quality purification function of the aquatic plants and microorganisms, and promotes the ecological restoration of the water environment.

Description

An ecological bag of agricultural waste mixed immobilized denitrification bacteria for slope protection and its system

technical field

The invention relates to the field of ecological slope protection, in particular to an ecological bag and system for mixing and immobilizing denitrification bacteria with agricultural waste for slope protection.

Background technique

At present, the research on the ecological bag slope protection technology mainly stays in two aspects: one is the research on the safety and stability of the slope protection, such as the geogrid reverse-wrapped ecological bag, and each layer of the ecological bag is equipped with three-dimensional drainage when stacked. The connecting buckle connects the ecological bag body into a whole, forming a stable triangular internal friction locking structure; the second is the research on the landscape greening effect of the ecological bag and the plant restoration and purification of the water body. In order to make the ecological bag slope protection plants grow densely, in order to obtain better results The water purification effect mainly develops three methods: smearing grass seeds on the surface of the bag body, filling plant grass seeds in the ecological bag, and inserting live branches. However, these studies are not particularly ideal for the purification of polluted water. In order to improve the purification effect of the traditional ecological bag slope protection technology on polluted water bodies, the present invention intends to use the technology of combining the ecological bag with the immobilized denitrification bacteria group of agricultural waste, which not only solves the problem of great waste of agricultural waste at present, but also It provides a biological carrier and a new carbon source for the denitrification bacteria, and at the same time utilizes the role of plants and microorganisms in the ecological bag to purify the water, effectively solves the pollution of the water body, and improves the functional diversity of the ecological bag slope protection technology to improve its Research on the water quality purification effect of polluted surface water bodies.

Contents of the invention

In view of the above defects, the purpose of the present invention is to overcome the deficiencies of the prior art, and provide an improved ecological bag and system for mixing and immobilizing denitrification bacteria with agricultural waste for slope protection. The invention has simple structure and convenient processing, and can improve the utilization rate and survival rate of plant seeds at the same time.

The present invention solves its technical problem and realizes through the following technical solutions:

An ecological bag for slope protection with agricultural waste mixed with immobilized denitrification bacteria, comprising a bag body (5), the bag body (5) mainly containing agricultural waste, plant seeds (2) and plant soil ( 3), nitrogen-removing bacteria (1) are fixed on the agricultural waste, medium sand and coarse sand are added to the planting soil (3), and plants (4) are planted on one side of the bag body (5) .

Further, the agricultural waste, plant seeds (2), plant soil (3) and denitrification bacteria (1) are proportioned according to the following volumes:

The volume of the agricultural waste is 10%-15% of the total volume of the ecological bag;

The volume of the denitrification bacteria (1) is 5%-20% of the total volume of the ecological bag;

The volume of the plant seeds (2) is 5%-15% of the total volume of the ecological bag;

The volume of the planting soil is 80%-90% of the total volume of the ecological bag, wherein the total volume of the medium sand and coarse sand is 20%-40% of the total volume of the planting soil after mixing.

Further, the agricultural wastes include rice straw, corncobs, loofah or stalks.

Further, the agricultural waste is cut into small crushed substrates, and after being treated with alkali, the crushed agricultural waste substrates are added to the enrichment medium of nitrifying and denitrifying bacteria. After culturing, it can be observed that there are Signs of microbial attachment, the matrix changed from the original light yellow to brown, and a thin, compact, light yellow biofilm adhered, that is, the denitrification bacteria were successfully fixed on the agricultural waste crushed matrix.

An ecological bag system for agricultural waste mixed with immobilized denitrification bacteria for slope protection, comprising a concrete layer (8), a foundation beam (9) is fixed at the lower end of the concrete layer (8), wherein the ecological bag is divided into There are two types, namely ecological bag one (51) and ecological bag two (52); the bag body (5) of the ecological bag is composed of an upper bag body and a lower bag body, and the ecological bag one (51) The bag body comprises upper bag body one (511) and lower bag body one (512), and the bag body of described ecological bag two (52) includes upper bag body two (521) and lower bag body two (522); The upper bag body 1 (511) of the ecological bag 1 (51) is mainly composed of ironed needle-punched non-woven fabrics, and the lower bag body 1 (512) of the ecological bag 1 (51) is mainly composed of artificial deerskin. Both the upper bag body two (521) and the lower bag body two (522) of the second (52) are mainly composed of ironing needle-punched non-woven fabrics;

Plants are planted on the upper bag body one (511) and the upper bag body two (521), while no plants are planted on the lower bag body one (512) and the lower bag body two (522);

The first ecological bag (51) and the second ecological bag (52) are paved on the concrete layer (8) in dislocation, and the upper bag body one (511) and the upper bag body two (521) are both facing upward, and the ecological bag body of the adjacent layers The bags are misplaced by half the bag width, and a thick cotton rope (7) is sandwiched between each layer of ecological bags and every two ecological bags, and a soft material pad (6) is placed between the first (51) of the same layer of ecological bags .

Further, the volume of the nitrogen-removing bacteria (1) added in the ecological bag one (51) is 5%-10% of the total volume of the ecological bag one (51), and the nitrogen-removing bacteria (1) added in the ecological bag two (52) The volume of the bacteria (1) is 15%-20% of the total volume of the ecological bag two (52).

Further, the soft material pad (6) includes sponge, cotton felt, straw pad or straw pad.

The beneficial effects of the present invention are:

1. Different from the prior art that only fills the ecological bag with plant grass seeds, the present invention fills the immobilized denitrification bacteria, and the biodegradable agricultural waste shredded matrix of the immobilized denitrification bacteria not only helps the germination of plant seeds and growth, and contribute to the purification of water. Among them, biodegradable agricultural waste can not only provide an important carrier for the attachment and growth of denitrification microbial flora, but also serve as a new type of non-polluting carbon source, that is, a slow-release carbon source for microorganisms, providing sufficient carbon sources for the growth of denitrification microorganisms .

2. The present invention utilizes the oxygen transport function of plants to provide necessary oxygen for the growth of microorganisms such as denitrification flora. The growth process of microorganisms can degrade some organic macromolecules that are difficult to be absorbed by plants, and convert them into substances that are easy to be absorbed by plants. Organic nutrients absorbed by the body. When the denitrification bacteria are enriched and cultivated, a good growth state is obtained, and the symbiosis system between the plant and the microbial community is stabilized in the later stage, and the plant root system is used to intercept and absorb the pollutants in the water body and the microorganisms to degrade and digest the organic matter in the water body to the maximum extent. Purify water quality.

3. The present invention makes full use of biodegradable agricultural waste, saves resources, is economical and safe, and effectively overcomes the shortcomings of poor greening effect and poor water purification effect in the prior art. At the same time, the present invention utilizes the strong capillary water absorption effect of artificial buckskin and thick cotton rope to store a large amount of water when the rain is abundant, and release water when the weather is dry, while using the thick cotton rope immersed in the river water to absorb water. For ecological bag plants and various biological water needs.

4. The present invention turns waste into treasure, utilizes agricultural waste as a resource, and combines with immobilized denitrification bacteria to strengthen the water purification function of aquatic plants and microorganisms, and promote the ecological restoration of the water environment. At the same time, the capillary action of the thick cotton rope and the water absorption performance of the soft material pad are integrated to store water to meet the biological needs of the ecological bag in dry weather, which is economical and practical.

Description of drawings

Fig. 1 is a side schematic diagram of an ecological bag of mixed and immobilized denitrification bacteria of agricultural waste used for slope protection according to the present invention;

Fig. 2 is a schematic front view of an ecological bag slope protection system for agricultural waste mixed with immobilized denitrification bacteria for slope protection according to the present invention;

Fig. 3 is a three-dimensional schematic diagram of an ecological bag slope protection system of an ecological bag slope protection system for agricultural waste mixed with immobilized denitrification bacteria for slope protection;

Fig. 4 is the ecological bag two-dimensional schematic diagram of the ecological bag slope protection system of a kind of agricultural waste mixed and immobilized denitrification bacteria used for slope protection according to the present invention;

Fig. 5 is a schematic diagram of the soft material pad of the present invention;

Fig. 6 is a schematic diagram of the thick cotton rope of the present invention.

Explanation of reference signs

1-Denitrification bacteria, 2-Plant seeds, 3-Plant soil, 4-Plant, 5-Bag, 51-Ecological bag 1, 52-Ecological bag 2, 511-Upper bag 1, 512-Lower bag 1 , 521-upper bag body two, 522-lower bag body two, 6-soft material pad, 7-coarse cotton rope, 8-concrete layer, 9-foundation beam.

detailed description

The present invention will be further described in detail below through the specific examples, the following examples are only descriptive, not restrictive, and cannot limit the protection scope of the present invention with this.

As shown in FIG. 1 , an ecological bag for slope protection with agricultural waste mixed with immobilized denitrification bacteria includes a bag body 5 , and the bag body 5 is mainly composed of air-permeable and water-permeable materials. The bag body 5 is mainly filled with agricultural waste, plant seeds 2, plant soil 3 and water retaining agent, and nitrogen-removing bacteria 1 are fixed on the agricultural waste. Agricultural wastes are mainly biodegradable agricultural wastes such as rice straw, corn cob, loofah or straw, among which, rice straw, loofah and straw are trimmed into 6mm-8mm long crushed matrix, and corn cob is trimmed into 5×5×5mm ³ volumes of small cube crushed substrates, the volume of agricultural waste is 10%-15% of the total volume of the ecological bag, and the volume of the denitrification bacteria 1 is 5%-20% of the total volume of the ecological bag. Add the agricultural waste crushed matrix to the enrichment medium of nitrifying and denitrifying bacteria after alkaline treatment, and after culturing, it can be observed that there are signs of microbial adhesion on the agricultural waste crushed matrix, and the matrix changes from the original light yellow color to It is brown in color, and adheres to a thin, light yellow bacterial membrane with a tight structure, which means that the denitrification bacteria are successfully fixed on the agricultural waste crushed substrate.

One side of bag body 5 is planted with plant 4. The plant seeds 2 in the bag are seeds of local dominant aquatic plants with the function of purifying water quality, such as Bermudagrass with strong adaptability and water purification effect, which can purify water quality, and the volume of plant seeds 2 is 1/2 of the total volume of the ecological bag. 5%-15%. The plants 4 on the bag body include local dominant plants, such as reeds, which have the function of purifying water quality and are easy to adapt to the environment. The short grass series grown from plant 4 and plant seed 2 construct a plant system, and the interlaced roots transport oxygen and provide habitat for the reproduction and growth of microorganisms, which can promote the growth and reproduction of microorganisms, and are more conducive to the purification of water quality.

Medium sand and coarse sand are added to the plant soil 3, the volume of the plant soil is 80%-90% of the total volume of the ecological bag, and the total volume of the medium sand and coarse sand is 20% of the total volume of the plant soil after mixing. It gives full play to the role of local planting soil, which is more conducive to the growth and adaptation of plants. At the same time, the medium sand and coarse sand ensure a certain permeability of rainwater and porosity of air circulation, which is beneficial to the life of microbial flora in the bag body 5 . In addition, a water-retaining agent is added to the planting soil 3, and the water-retaining agent can be a mixture of granular sponge and paper.

The biodegradable agricultural waste in the present invention can be rice straw matrix, loofah matrix or corncob matrix, etc. These substrates are not only cheap and easy to obtain, but also are new carbon sources that need to be developed urgently. It avoids the waste of agricultural waste, and is fully used as an alternative material for denitrification carbon source. It has excellent safety, strong continuous carbon supply capacity, and is suitable for denitrification. The biodegradable agricultural waste of the present invention exists in the form of finely cut substrates with a basic length between 6 mm and 8 mm or a basic volume of about 5×5×5 mm ³ .

As shown in Fig. 2 to Fig. 6, a kind of ecological bag system of agricultural waste mixed and immobilized denitrification bacteria used for slope protection includes a concrete layer 8, and a foundation beam 9 is fixed at the lower end of the concrete layer 8, wherein the ecological bag is divided into There are two types, eco-bag one 51 and eco-bag two 52 respectively. The bag body 5 of ecological bag is made up of upper bag body and lower bag body, and the bag body of ecological bag one 51 comprises upper bag body one 511 and lower bag body one 512, and the bag body of ecological bag two 52 comprises upper bag body two 521 and lower bag body two 522. The upper bag body 1511 of the ecological bag 151 is mainly made of polypropylene PP or polyester fiber PET as the raw material for ironing needle-punched non-woven fabric, which has anti-ultraviolet, anti-aging, non-toxic, non-combustible, and non-extending cracks. specialty. The lower bag body 1 512 of the ecological bag 1 51 is mainly made of artificial buckskin, which has super water absorption capacity. The amount of crushed agricultural waste matrix added in the ecological bag-51 is 500g, and the denitrification bacteria fixed on the crushed agricultural waste matrix is 5%-10% of the total volume of the ecological bag-51.

The upper bag body 2 521 and the lower bag body 2 522 of the ecological bag 2 52 are both ironed needle-punched non-woven fabrics made of polypropylene PP or polyester fiber PET, which have acid and alkali resistance, corrosion resistance, and frost resistance. It has the characteristics of melting, anti-aging, and non-extending cracks. The 1000g of crushed agricultural waste substrate added in the ecological bag 2 52 is 15%-20% of the total volume of the ecological bag 2 52, and the denitrification bacteria fixed on the crushed agricultural waste substrate is 15%-20%.

Plants are planted on the first bag body 511 and the second bag body 521, but no plants are planted on the first bag body 512 and the second bag body 522. The plant seeds 2 added in the ecological bag one 51 and the ecological bag 52 are 50g.

After the first ecological bag 51 and the second ecological bag 52 are filled, they are uniformly stirred and installed in the bag body. After on-site installation, it can be sewn up with a portable sewing machine or by other methods such as tying pockets, or it can be sealed after being filled with soil in the factory. Plant seeds can be freely deployed according to different seasons, regions, temperature or other needs.

The cement stone pillar is used as the foundation beam 9 to lay a good base, and the concrete layer 8 is poured to ensure the stability of the base of the ecological bag slope protection. On the concrete layer 8, the ecological bags are paved in dislocation, and the upper bag body 1 511 and the upper bag body 2 521 are both facing upwards, and the joints of each two ecological bags are equipped with joint buckles, and the ecological bags of adjacent layers are staggered half bag wide. Coarse cotton rope 7 is all clamped in the middle of every layer of ecological bags and every two ecological bags. The thick cotton rope 7 is mainly composed of cotton, has excellent capillarity, and can fully absorb the water body, and the thick cotton rope 7 is immersed in the river water body to absorb water when the water level is low. Between the ecological bag one 51 of the same layer, the soft material pad 6 is sandwiched longitudinally, in order to strengthen the water storage capacity of the ecological bag. Thick cotton rope 7 diameter is between 20-30mm, is used for capillary water absorption, and when weather is dry, provides moisture to each ecological bag. Ecological bag 1 51 is placed above the normal water level, and ecological bag 2 52 is placed below the normal water level.

The above is only a preferred embodiment of the present invention, and it should be pointed out that for those of ordinary skill in the art, some improvements and modifications can be made without departing from the principle of the present invention. It should be regarded as the protection scope of the present invention.

Claims (7)

1. a kind of ecology bag of the agricultural wastes mixed immobilization denitrifier for bank protection, it is characterised in that：Including bag (5) it is solid on the agricultural wastes, mainly equipped with agricultural wastes, plant seed (2) and the plant raw-soil (3) in the bag (5) Surely there is denitrifier (1), middle sand and coarse sand are added in the plant raw-soil (3), the side of the bag (5) plants plant (4).

2. a kind of ecology bag of the agricultural wastes mixed immobilization denitrifier for bank protection as claimed in claim 1, it is special Levy and be：The agricultural wastes, plant seed (2), the plant raw-soil (3) and denitrifier (1) carry out proportioning by volumes below：

The volume of the agricultural wastes is the 10%-15% of ecology bag total measurement (volume)；

The volume of the denitrifier (1) is the 5%-20% of ecology bag total measurement (volume)；

The volume of the plant seed (2) is the 5%-15% of ecology bag total measurement (volume)；

The volume of the plant raw-soil is the 80%-90% of ecology bag total measurement (volume), wherein the cumulative volume of the middle sand and coarse sand is mixed The 20%-40% of raw-soil cumulative volume is planted after conjunction.

3. a kind of ecology bag of the agricultural wastes mixed immobilization denitrifier for bank protection as claimed in claim 2, it is special Levy and be：The agricultural wastes include Caulis et Folium Oryzae, corn cob, Retinervus Luffae Fructuss or straw.

4. a kind of ecology bag of the agricultural wastes mixed immobilization denitrifier for bank protection as claimed in claim 3, it is special Levy and be：Agricultural wastes are cut into into small-sized broken substrate, the broken substrate of agricultural wastes adds nitrification anti-after alkali process In the enrichment medium of nitrifier, wait cultivate to it is observed that the broken substrate of agricultural wastes on have microorganism attachment trace as, Substrate is changed into sepia from the light yellow of original color, and adhering to very thin close structure, flaxen Mycoderma, i.e. denitrogenation Bacterium is successfully fixed in the broken substrate of agricultural wastes.

5. a kind of life of the agricultural wastes mixed immobilization denitrifier for bank protection based on described in any one of claim 1-4 The system of state bag, it is characterised in that：Including concrete layer (8), concrete layer (8) lower end is fixed with foundation beam (9), wherein The ecology bag is divided into two classes, respectively ecology bag one (51) and ecology bag two (52)；The bag (5) of the ecology bag is by upper bag Body and lower bag body are combined, and the bag of the ecology bag one (51) includes upper bag body one (511) and lower bag body one (512), institute Stating the bag of ecology bag two (52) includes upper bag body two (521) and lower bag body two (522)；The upper bag body of the ecology bag one (51) One (511) is mainly made up of flatiron needle punched non-woven fabrics, and the lower bag body one (512) of ecology bag one (51) is main by artificial deerskin structure Upper bag body two (521) and lower bag body two (522) into, the ecology bag two (52) is mainly made up of flatiron needle punched non-woven fabrics；

Planting on the upper bag body one (511) and upper bag body two (521) has plant, and the lower bag body one (512) and lower bag body Plant has not been planted on two (522)；

Ecology bag one (51) and the dislocation of ecology bag two (52) are paved on concrete layer (8), and upper bag body one (511) and upper bag body Two (521) upward, and misplaces half bag wide between the ecology bag of adjacent layer position, in the middle of every layer of ecology bag and each two ecology bag Coarse cotton rope (7) is all accompanied, between the ecology bag one (51) of same layer flexible material pad (6) is equipped with.

6. a kind of ecology bag of the agricultural wastes mixed immobilization denitrifier for bank protection as claimed in claim 5 is System, it is characterised in that：Denitrifier (1) volume of addition is the total measurement (volume) of ecology bag one (51) in the ecology bag one (51) 5% -10%, in the ecology bag two (52) denitrifier (1) volume of addition for the total measurement (volume) of ecology bag two (52) 15% - 20%.

7. a kind of ecology bag of the agricultural wastes mixed immobilization denitrifier for bank protection as claimed in claim 5 is System, it is characterised in that：The flexible material pad (6) is including sponge, cotton felt, Caulis et Folium Oryzae pad or straw pad.