46results about How to "Improve water permeability" patented technology

The invention discloses a sintered water permeable brick and a preparation method thereof, and belongs to the technical field of sintered ceramics. According to the water permeable brick, structural pug in a surface layer is composed of, by weight, 45-65% of structural fine aggregates, 20-30% of plastic high-temperature binders and 15-25% of water, pore forming pug in the surface layer is composed of, by weight, 20-50% of pore forming agent aggregates, 45-80% of plastic pore adding binders and 0-5% of biomass fuel internal combustion catalysts, and a blank of a secondary surface layer is composed of, by weight, 70-75% of coarse structural aggregates, 10-15% of plastic high-temperature binders, 0-5% of pore adding agent coarse aggregates and 10-15% of water. A blank of the surface layer and the blank of the secondary surface layer are prepared firstly, the blank of the surface layer contains the orderly distributed structural pug and the pore forming pug, and then single-shaft extrusion forming, drying and sintering are conducted to obtain the water permeable brick. The water permeable brick has high water permeable rate, high strength, high abrasion resistance and durability and is a paving material with excellent ecological and environmental functions.

The invention discloses a pervious concrete brick with high strength. The brick comprises the following raw materials: ordinary portland cement, broken stones, phosphogypsum, lithium slag powder, steel slag, coal ash, silica fume, iron tailing sand, metakaolin, mixed fibre, straw powder, a water reducer, poly(styrene-co-butadiene), a silicone acrylic emulsion, redispersible latex powder, macroporous resin, an epoxy resin adhesive, ethylene diamine tetra (methylene phosphonic acid) sodium, diisopropanolamine, sodium hyposulfite, calcium lignin sulphonate, and water. The pervious concrete brick with high strength has the advantages of high compressive strength, excellent water permeability, and good frost resistance.

The invention discloses a water-permeable wear-resistant garden path and a construction method thereof. The water-permeable wear-resistant garden path comprises a pavement main body and flat curbs, wherein the flat curbs are arranged on curb bases at two sides of the pavement main body; the pavement main body sequentially comprises a roadbed, a crushed stone drainage layer, a base layer, a cushion layer, a binding layer and a surface layer from bottom to top; the roadbed is formed by pure soil; the crushed stone drainage layer is uniformly filled and compacted by crushed stones; the base layer is tamped by a concrete base, a transverse slope of 2-3% is formed on the base layer, and at least a layer of reverse filtration geotextile is arranged between the crushed stone drainage layer and the base layer; the cushion layer is filled and compacted by lime soil in which the ratio of lime to soil is 3:7; the binding layer is formed by hard cement mortar in which the ratio of cement to mortar is 1:3; the surface layer serves as the uppermost layer of the pavement main body; and water-permeable bricks are used for paving, and a gap between adjacent water-permeable bricks and the surface layer are filled with water-permeable resin mortar. The garden path with the structure has relatively high strength, stiffness and wear resistance and good water permeability; the adopted paving process has high efficiency and low construction cost; and complaints of users are reduced.

The invention discloses a concrete brick with high water permeability. The concrete brick is prepared from raw materials in parts by weight as follows: 120-200 parts of cement, 250-300 parts of gravel, 10-35 parts of ardealite, 10-50 parts of slag, 10-50 parts of steel slag, 200-350 parts of river sand, 20-50 parts of fly ash, 5-20 parts of silica fume, 10-35 parts of sintered magnesia, 2-15 parts of metakaolin, 10-40 parts of mixed fiber, 5-38 parts of straw powder, 3-8 parts of a water reducer, 0.1-0.5 parts of ethylene diamine tetra (methylene phosphonic acid) sodium and 20-50 parts of water. The concrete brick with high water permeability has very high compressive strength and excellent water permeability and can meet the use requirement of multiple fields.

The invention relates to a functional fertilizer for regulating a micro-ecological environment of soil. 50-80% of nanometer dolomite dust, 5%-15% of sugar alcohol, 5%-15% of potassium metasilicate, 5-10% of charcoal and 5%-10% of biochemical potassium fulvic acid are utilized to prepare the functional fertilizer according to the following steps: A) preparing raw materials; B) preparing nanometer dolomite dust; C) preparing a sugar alcohol water solution; D) chelating nutrients; E) pelleting for the first time; F) pelleting for the second time; G) drying. The functional fertilizer can be used for improving soil hardening, regulating soil PH and regulating soil acidification; the functional fertilizer can be used for supplementing organic matters and various medium trace elements for the soil, regulating the saturability of soil base, cation exchange capacity and nutrient balance, reducing aluminum and manganese toxicity damage and improving soil salinization; the functional fertilizer can be used for absorbing passivated heavy metal and repairing soil heavy metal pollution; the functional fertilizer also is capable of creating an excellent living environment for soil beneficial microorganisms, boosting the growth and reproduction of the microorganisms and recovering the excellent micro-ecological environment of soil.

The invention relates to a modification method for establishing a water channel by utilizing molybdenum disulfide to enhance the water flux of a polyamide reverse osmosis membrane, and belongs to thefield of material modification. The method comprises the following steps: preparing a molybdenum disulfide and m-phenylenediamine mixed solution; pouring the mixed solution on the surface of a polyether sulfone-based membrane and maintaining for 10 minutes; taking out the polyether sulfone-based membrane and blow-drying by nitrogen; pouring a 1,3,5-toluenyl chloride n-hexane solution on the surface of the polyether sulfone-based membrane to enable the 1,3,5-toluenyl chloride n-hexane solution and the polyether sulfone-based membrane to completely react for 1 minute; taking out the polyether sulfone-based membrane, blow-drying with nitrogen and removing the redundant solution; and placing the prepared membrane in a drying oven with the temperature of 60 DEG C and reacting for 15 minutes. The method has the following advantages: single-layer nanometer molybdenum disulfide has a two-dimensional layered structure similar to graphene, only has the thickness of 1 nanometer, is filled with nanometer pores, and can leak a large amount of sea water and remain salt and other components during sea water desalination and salt interception to fulfill the aims of sea water desalination and saltinterception. The method is simple in process and convenient in preparation.

The invention discloses high-strength and water-permeable concrete and a preparation method thereof and belongs to the technical field of concrete. The technical scheme is characterized in that the high-strength and water-permeable concrete is prepared from components in parts by weight as follows: cement, reinforced aggregate, water-permeable aggregate, reinforced fibers, a flexibilizer, a waterreducing agent and water, wherein the reinforced aggregate comprises crushed stone and high-strength ceramsite; the water-permeable aggregate comprises zeolite and shell particles; the reinforced fibers comprise carbon fibers and bamboo fibers. Strength of the concrete can be improved by the reinforced aggregate and the reinforced fibers; flexibility, strength and water permeability of the concrete can be improved by the flexibilizer; the bamboo fibers, the zeolite and the shell particles play a synergistic role, so that moisture is diverted and adsorbed rapidly and discharged from the surfaceof the concrete rapidly; the bamboo fibers and the shell particles have antibacterial performance, accordingly, bacteria bred in a hot and humid environment can be reduced, and durability of the concrete is improved.

The invention discloses a preparation method of a high-compressive-strength composite water-permeable brick, and belongs to the technical field of water-permeable brick preparation. According to the method, a macroscopic stacking structure composite material composed of cement, powder, aggregate, fly ash, fabric fragments and the like is used, and in the process of forming the water permeable brick, the water permeability of the water-permeable brick is improved; the water bleeding property of cement paste can be adjusted by the fabric fragments; epoxy resin and a curing agent are added, and the curing agent is used for crosslinking the epoxy resin into reticulate huge molecules; surface treatment is carried out on inorganic filler by using a silane coupling agent, the silane coupling agent enhances the binding force between sand particles and an adhesive, so that the strength of a whole brick body is improved; then, the fly ash and the sugar filter mud are added, sugar filter mud continues to be added, and the main component of the sugar filter mud is calcium carbonate, so that calcium carbonate in the sugar filter mud is decomposed to generate carbon dioxide at a certain high temperature; staggered through holes are formed in the brick body, so that water easily permeates the brick body, then the water permeability of the water-permeable brick is improved, and the brick has wide application prospects.

The invention provides a plastic water permeable brick and a manufacturing method thereof. The plastic water permeable brick comprises a top plate, a bottom plate and support columns arranged between the top plate and the bottom plate, wherein the top plate and the bottom plate are respectively provided with blind holes matched with the support columns. Through holes are also formed in the top plate and the bottom plate. Due to the hole structure arranged on the brick, porosity is improved, the problem that water permeable gaps are very prone to being blocked by impurities with small particles is avoided, and water permeability is improved. In addition, a detachable assembly structure is adopted in the plastic water permeable brick, and therefore cleaning and other maintenance work are enabled to be convenient.

The invention discloses an organic and inorganic compound cemented water-permeable brick. Two aggregates in different grain size and an organic and inorganic compound cementing agent are mixed and prepared into the water-permeable brick. The organic and inorganic compound cementing agent is a hydrophilic compound cementing agent which is formed by compounding an organic cementing agent with an inorganic cementing agent, wherein the organic cementing agent is formed by grafting and copolymerizing organic matter monomer hydroxy-propyl acrylate, acrylamide, sodium dodecyl benzene sulfonate and propyl trimethoxy silane under a cement hydration environment; the weight of the fine aggregate is 10-30% of the weight of coarse aggregate; in 100 weight parts of aggregates, the content of the organic and inorganic compound cementing agent is 5-30%. The invention also provides a preparation method for the organic and inorganic compound cemented water-permeable brick; the process is simple; the organic and inorganic compound cemented water-permeable brick disclosed by the invention has the advantages of low cost, high strength, high abrasive resistance, excellent water permeability performance, and the like.

The invention discloses charcoal-based sustained-release compound fertilizer which is composed of, by weight, 600-650 parts of nitrogen phosphorus potassium compound fertilizer, 25-32 parts of boron fertilizer, 25-32 parts of zinc fertilizer, 70-85 parts of magnesium fertilizer and 125-150 parts of charcoal base, a weight ratio of N:P2O5:K2O in the nitrogen phosphorus potassium compound fertilizer is 6-8:6-8:16-19, and the charcoal base is prepared by subjecting rice husk to thermal cracking reaction at 700-800 DEG C. by adopting the charcoal-based sustained-release compound fertilizer, soil structure can be improved effectively, nutritional ingredient release time of the fertilizer in tobacco field soil can be delayed, utilization rate of nutritional ingredients can be increased effectively, and the objective of improving yield and quality of tobacco leaves is achieved finally.

The invention relates to the technical field of sublimation transfer printing and discloses instant dry type sublimation transfer digital paper. The instant dry type sublimation transfer digital paper comprises perforated PP paper, a water absorbing and permeable layer, a porous layer and a surface channel layer which are sequentially arranged from bottom to top; the porous layer is made of interpenetrating network resin formed by crosslinking of cellulose or sodium carboxymethylcellulose or starch and modified cationic polyacrylamide, or formed by crosslinking of polyacrylamide or cellulose or sodium carboxymethylcellulose and modified cationic starch; on one hand, the interpenetrating network resin can swell to 'catch' a dye for quick ink absorption, and on the other hand, components of the resin are adjusted and the network density is controlled to improve the water permeability, so that water molecules can quickly enter the water absorbing and permeable layer; and the perforated PP paper has excellent flexibility and mechanical strength and is stable in size in the printing process, so that the problem of shrinkage, caused by weather, of the conventional paper base material is solved. The instant dry type sublimation transfer digital PP paper has the characteristics of being instant in drying, quick in ink absorption, good in size stability and low in cost, and can meet the requirements for quick printing and efficient manufacturing at present.

The invention relates to the technical field of heat sublimation transfer, and discloses instant dry type heat sublimation transfer digital paper. The instant dry type heat sublimation transfer digital paper sequentially comprises base material paper, a water absorbing and permeating layer, a porous layer and a surface channel layer from bottom to top. The porous layer is interpenetrating polymer network resin formed by cross linking of cellulose or sodium carboxymethylcellulose or starch and cation modified polyacrylamide or formed through cross linking of polyacrylamide or cellulose or sodium carboxymethylcellulose and cation modified starch. On one hand, the interpenetrating polymer network resin can expand to pocket dyestuff, and rapid ink sucking is conducted; and on the other hand, resin components are adjusted, the network density is controlled, so that the water permeability is improved, and water molecules rapidly enter the water absorbing and permeating layer. Holes are formed in the hydrophilia end of the water absorbing and permeating layer, and water in ink is adsorbed into the holes and rapidly transmitted to the cellulose paper base material. The instant dry type heat sublimation transfer digital paper has the beneficial effects that dryness can be achieved immediately during printing, ink absorbing is rapid, and the transfer effect is good; and requirements of existing rapid printing and efficient manufacturing are met.

A porous aerated concrete building block is characterized by comprising following raw materials in parts by weight: 16 to 20 parts of cement, 20 to 25 parts of quicklime, 12 to 16 parts of gypsum, 0.45 to 0.65 part of aluminum powder, 1 to 2 parts of sodium dodecyl benzene sulfonate, 12 to 15 parts of kaolin earth, 5 to 8 parts of barite powder, 40 to 50 parts of river sands, 3 to 5 parts of dibutyl phthalate, 3 to 5 parts of polyethylene glycol, 2 to 3 parts of sodium persulfate, 4 to 7 parts of oil foot, 2 to 4 parts of chlorinated paraffin, 2 to 3 parts of phenyltriethoxysilane, and 5 to 10 parts of sodium metasilicate. In the preparation method, the aluminum powder and the surfactant commonly foam, therefore the numbers and sizes of air-holes are increased, the weight of building blocks is reduced, and the sound insulation and heat insulation effects are prominently improved.

The invention discloses a C30 concrete and a preparation method thereof. The C30 concrete is characterized by comprising the following components in parts by weight: 140-150 parts of cement, 800-850 parts of coarse aggregate, 20-30 parts of admixture, 10-20 parts of reinforced fibers, 6-8 parts of a water retaining agent, 4-6 parts of an addition agent and 100-110 parts of water. The reinforcing fiber comprises a lignocellulose and a modified bamboo fiber in a weight ratio of 1:1. According to the C30 concrete preparation method, the concrete can have certain water-retaining property while being quickly permeable through the matching of the reinforcing fibers and the water retaining agent, so that the concrete is prevented from being dried and shrunk, and the crack resistance of the concrete is improved.

The invention provides a filtering device, a sewage filtering system, and a sewage filtering technology, and belongs to the technical field of sewage treatment. The filtering device comprises filter tubes, magnetic rings and a water collecting tube, every filter tube comprises an outer screen tube, an inner screen tube and magnetic particles, and the magnetic rings can move along the length direction of the outer screen tubes in order to drive the magnetic particles to wriggle; and the water collecting tube communicates with the bottoms of the inner screen tubes to discharge filtered water. The filtering device can achieve rapid sludge formation, reduce the compactness of a sludge cake layer, increase the water permeability of the sludge layer, prolong the filtration cycle of a micro-screen dynamic membrane and improve the outlet water quality of the dynamic membrane. The sewage filtering system comprises a membrane tank, a gas supply device, a lifting device and the filtering device. The system has the advantages of the filtering device, the sewage filtering technology adopts the filtering system, and can effectively improve the sewage treatment effect through a membrane forming process, a filtering process and an aeration desliming process.

The invention discloses an anti-fouling high-throughput polysulfone composite membrane. The anti-fouling high-throughput polysulfone composite membrane is prepared from, by weight, 50-80 parts of caprolactam-modified polysulfone, 10-20 parts of sulphonated polysulfone, 2-15 parts of polyvinylidene fluoride, 5-15 parts of polydiphenylmethylene acrylic polyurethane, 1-5 parts of polydiphenylmethylene vinyl polyurethane, 1-3 parts of perfluorinated sulfonic acid resin, 35-80 parts of a solvent, 1-4 parts of polyaniline nanofibers, 1-2 parts of nanometer zirconia, 0.1-0.5 part of nanometer lanthanum oxide, 1-2 parts of nanometer titanium dioxide, 0.2-1.5 parts of a modified boron nitride silane coupling agent, 0.3-1.5 parts of cellulose acetate, 0.5-3 parts of a polystyrene-alt-maleic anhydride copolymer and 0.5-3 parts of carboxyl betaine methacrylate. The anti-fouling high-throughput polysulfone composite membrane is good in thermal stability, excellent in weather resistance and anti-fouling performance and high in throughput.

The invention relates to a processing method of coarse cereal rice cooked with rice simultaneously. The method comprises the steps that firstly, difficultly-boiled components in raw material components are soaked separately, then coarse cereal raw materials after being soaked are subjected to microwave processing, electric field processing and drying processing in sequence until the coarse cereal rice cooked with the rice simultaneously is obtained, and various difficultly-boiled components in the coarse cereal rice can be cooked with the rice simultaneously. According to the method, hard husks of the coarse cereal can be effectively softened, the water permeability of the internal structure of the coarse cereal is improved, so that water slowly enters materials, and a starch channel is opened; then, the coarse cereal after being soaked is subjected to microwave processing, electric field processing and drying processing of three stages in sequence; finally, the internal compact structure in the coarse cereal is effectively damaged, a multi-channel multi-pore structure is formed in the structure of the coarse cereal, the hardness and density of the materials are lowered, and the water absorptivity of the coarse cereal is improved, so that the coarse cereal is more easily cooked; when boiled with the rice simultaneously, the coarse cereal can be cooked with the rice, the obtained coarse cereal rice is high in viscosity and good in taste, the cooking process can be effectively simplified, and the cooking time is shortened.

The invention relates to the technical field of thermal sublimation transfer printing, and discloses temperature-sensitive sticky instantly-dry thermal sublimation transfer printing digital paper. The paper sequentially comprises substrate paper, a water absorption and water permeable layer, a porous layer, a channel layer and a surface bonding layer from bottom to top; the surface bonding layer is a composite of a combination of any two or more than two of a polyvinyl alcohol-vinyl acetate copolymer, an ethylene-vinyl acetate-vinyl alcohol copolymer, sodium carboxymethylcellulose and polyvinyl alcohol and polyhydric alcohols; the porous layer is interpenetrating polymer network resin, the interpenetrating polymer network resin can expand to contain dye and quickly adsorb ink, and the purpose that water molecules quickly enter the water absorption and water permeable layer is achieved by regulating composition of the resin and controlling the network density. According to the temperature-sensitive sticky instantly-dry thermal sublimation transfer printing digital paper, the surface bonding layer has no stickiness at room temperature, and therefore the digital paper can be conveniently rolled up; when the digital paper is heated to the specific temperature, the surface of the transfer printing paper has the very good stickiness to stick an elastic bearing object, and the advantages of being clear in transfer-printed image detail and bright and saturated in color are achieved; after transfer printing is completed and the temperature is lowered, the digital paper is automatically separated from the bearing object, and the temperature-sensitive advantage is achieved.

The invention discloses a method for planting berchemiella wilsonii nakai to solve the problems of low germination rate and breeding difficulty of berchemiella wilsonii nakai. The method includes: firstly, treating seed coat, namely placing seeds in concentrated sulfuric acid 5-10mol/L for soaking for 2-5 minutes; secondly, secondarily treating the seeds, namely placing the seeds treated in the step one into potassium permanganate solution 0.05-0.2mol/L for soaking for 5-10 minutes; thirdly, accelerating germination, namely placing the seeds treated in the step two into potassium nitrate solution with 1%-3% mass concentration for soaking for 20-50 days; and fourthly, performing transplantation and field planting, namely transplanting the germinating seeds to a field. By means of treatments such as seed coat treatment, germination acceleration and the like for the seeds, the germination rate of berchemiella wilsonii nakai can be improved evidently, and significance on protecting berchemiella wilsonii nakai is achieved.

The invention relates to a waterproof site tree planting method suitable for park place tree array. Planting holes are dug or expanded according to planting orientation before surface pavement; bodiesof the planting holes are in inverted cone shape with big end down; when the planting holes run through a waterproof layer and connect with a lower water-permeable area, a coarse sand layer is laid at the bottom of each planting hole; when the planting holes do not run through the waterproof layer, a gravel layer is laid at the bottom of each planting hole; a surface water pumping pipe is provided; trees with an earth ball are lifted during planting, a water pipe is extended into the lower portion of a tree planting earth layer or below the same for irrigation, water flows up from the bottomand mixes with planting earth to form mud, and the trees are released and naturally fall to a set height. The method herein has the advantages that post-planting survival rate of trees in the waterproof area can be increased, the future trouble of changing trees after planting is alleviated or eliminated, and maintenance difficulty and workload are decreased.

The invention discloses a waste steel slag permeable base layer and a laying method thereof. According to one aspect of the invention, a waste steel slag permeable base layer is provided, and comprises a base layer, kerb stone, a crushed stone stabilizing layer, a permeable concrete layer, a leveling layer, and a permeable brick, wherein the leveling layer is laid on the permeable concrete layer,and the materials of the leveling layer include waste steel slag and cement. According to another aspect of the invention, a laying mode of the waste steel slag permeable base layer is provided, and includes six steps. The materials of the leveling layer adopts the waste steel slag produced by directly placing the residue after iron ore smelting in cold water, not only the waste steel slag is treated, but also the inside of the waste steel slag has a honeycomb structure, which improves the permeability and saves energy, compared with a sand cushion, the stability of the leveling layer is greatly improved, and the structural stability of permeable bricks is ensured.

The invention discloses a coating material and a preparation method thereof. The coating material is prepared by uniformly mixing and stirring the following raw materials in percentage by mass: 24-30%of zinc powder, 2-6% of rare earth modified aluminum bronze alloy powder, 6-10% of manganese nitrate, 20-25% of glycerin, 0.02-0.05% of phosphoric monoester, 1-5% of calcium dodecyl benzene sulfonate, 3-6% of rare earth modified ceramic material powder and the balance of water, wherein the average particle size of the zinc powder is 10-15 microns; the average particle size of the rare earth modified aluminum bronze alloy powder is 8-12 microns; and the particle size of the rare earth modified ceramic material powder is 5-10 microns. The coating material disclosed by the invention has excellent adhesive force and imperviousness, has excellent stability and practicality and can be widely applied to the fields of steel and the like. The preparation method disclosed by the invention is simple, low in production cost and suitable for industrial production.

The invention discloses a ceramic permeable pavement brick. The ceramic permeable pavement brick comprises the following components in parts by weight: 50-60 parts of barite, 15- 25 parts of microlite, 2-5 parts of titanium dioxide, 5-10 parts of quartz sand, 5-8 parts of zirconium dioxide, 20-30 parts of enhanced clay, 5-10 parts of an activator, and 0.5-2 parts of auxiliary additives. The ceramic water pavement brick has the advantages of good water permeability, high material strength, good abrasion resistance, weathering resistance and long service life, and the preparation method has the advantages of low cost, easy availability of raw materials, and simple process, and has great practical value and good application prospect.

The invention relates to a method for improving water permeability of a pavement.The method comprises the following steps: 1) removing a pavement surface layer; (2) performing drilling on a road base, wherein a hole channel downwards penetrates through the road base and the gravel layer in sequence and extends to the top of a plain soil layer; (3) cleaning the hole channel, laying inverted filter isolation cloth at the bottom of the hole channel, correspondingly covering opening of the hole channel with a reinforcing mesh, and fixing the reinforcing mesh; and 4) re-paving the pavement surface layer. The improvement method provided by the invention can be used for transforming a non-permeable pavement into a permeable pavement, and can also be used for repairing and improving the water permeability of an existing road pavement; and according to the paving modes of different road surfaces, the hole diameter of the drill hole, the hole channel filling treatment mode and the hole opening reinforcing measure can be selected, so that the bearing capacity of the pavement is guaranteed to the maximum extent.

The invention relates to the technical field of preparation of building materials, in particular to a preparation method of a non-burnt environment-friendly water permeable brick. According to the preparation method, firstly, the porosity of basalt is modified and increased, and the pore diameter of the basalt is further broadened by utilizing an ice splitting function, so that the basalt has more abundant pore channels so as to be provided for water molecules to pass through, and the water permeation rate of a brick body can be increased by using the basalt as a raw material of the non-burnt environment-friendly water permeable brick; then, silicon hydroxyl groups are added on the particle surface of the basalt, high-bond energy chemical bonding can be generated by utilizing the silicon hydroxyl groups on the surface of the basalt and silicon hydroxyl groups in silicate cement, and the internal bonding strength of the non-burnt environment-friendly water permeable brick is increased, so that the problem that the mechanical performance of a common non-burnt water permeable brick is not ideal is solved; in addition, with the enhancement of the internal bonding strength, required compression molding pressure is reduced while the same molding effect is achieved, so that the porosity of the non-burnt environment-friendly water permeable brick is increased, the water permeability of the non-burnt environment-friendly water permeable brick is further increased, and a wide application prospect is obtained.

The invention discloses an ecological geotextile material used for slope protection and capable of effectively preventing water and soil loss, and relates to the technical field of ecological geotextile. The ecological geotextile material comprises a grating surface layer, a first bonding layer, a filter cloth layer, a second bonding layer and a water-permeable enhancement layer from outside to inside, wherein the grating surface layer improves the reinforcement effect of the geotextile material; the filter cloth layer improves the strength, corrosion resistance, ultraviolet resistance, antibiosis, filtration and water permeability of the geotextile material; the strength, the ultraviolet resistance and the corrosion resistance of the geotextile material are further improved by the permeable reinforcing layer; after the ecological geotextile material is used for slope protection, water and soil loss can be effectively prevented for a long time, and the service life is long. The needling shaping device conducts continuous treatment of oil spraying finishing, needling reinforcing and heat shaping on the fiber net to obtain the filter cloth, the passing guide mechanism, the buffering guide mechanism and the needling mechanism are matched, the stability in the guide process is kept, and the strength of the fiber net is improved.

The invention discloses environmentally friendly shell water permeable brick and a preparation method thereof. The environmentally friendly shell water permeable brick is characterized in that the brick comprises the following raw material components, by mass: 60-70 parts of shell powder, 20-30 parts of cement, 8-15 parts of water, and 3-5 parts of a waterproof synthetic resin adhesive. In the shell powder, the powder of 400 mesh or more accounts for, by mass, 35-55%, the powder of 200-400 mesh accounts for 40-60% and the powder of 100 mesh or less accounts for 3-7%. The waterproof synthetic resin adhesive is formed by mixing a polyvinyl acetate resin adhesive, polydimethylsiloxane and water-soluble acrylic resin with a mass ratio of 10-14:2-4:0.5-1. The environmentally friendly shell water permeable brick of the invention has the characteristics of high environmental protection safety, high strength, high water permeability, moisture retention, skid resistance, high and low temperature resistance, weathering resistance and the like.

The invention provides an antibacterial desalting pipe which comprises a hidden pipe and water permeable layers. The water permeable layers comprise the lower water permeable layer and the upper water permeable layer. The invention further provides application of the antibacterial desalting pipe to salt-alkali soil desalting. The desalting pipe is high in resistance to mildew and has an antibacterial rate of 90.0% or above; the desalting pipe is high in water permeability and is not prone to blockage and extremely low in blockage rate; after the improvement is conducted for 1 year by means of the desalting pipe, the salt content in soil which is 0-30 cm deep of salt-alkali soil is controlled to be 0.18% or below, the exchangeable sodium percentage (ESP) is controlled to be 6-9%, and the soil conductivity is controlled to be 3.6 ms/cm or below; after the salt-alkali soil is improved by means of the desalting pipe, the plant survival rate is high, and the disease resistance is strong; the disease resistance of black pine to common diseases such as brown leaf rust and leaf blight is high.