68results about How to "High film-hanging efficiency" patented technology

The invention discloses a natural mineral adsorption filtration agent, which comprises acidified zeolite, acidified attapulgite clay, acidified bentonite, acidified kieselguhr, volcanic rock and high-alumina clay. The preparation method of filtration agent is mixing, disintegrating, screening and packaging raw material to finished product. The filtration agent particles have rough surface, a lot of micropore inside, light specific gravity, large specific surface area and good adsorption capability, and are main raw material for preparing forming filtration material such as filtration plate, filtration block, filtration core, filtration pottery slice and filtration ring.

The invention discloses a natural mineral adsorption filter. The main point of the technical scheme is that the ingredients of the natural mineral adsorption filter are acidified zeolite, acidified attapulgite clay, acidified bentonite, acidified silicon It is composed of algae earth, volcanic rock and high alumina bauxite. The preparation method of the natural mineral adsorption filter is that the ingredients of the natural mineral adsorption filter are mixed, pulverized, screened and packaged into a finished product. Natural mineral adsorption filter particles have a rough surface and a large number of micropores inside, which have the characteristics of light specific gravity, large specific surface area and good adsorption performance. It is the main raw material for making various filter plates, filter blocks, filter cores, filter pottery and filter rings and other shaped filter materials.

The invention provides a method for hanging a membrane in a sludge internal circulation biological filter. The method comprises the following steps: mixing acclimated sludge and wastewater, adding nutrition, and injecting into the biological filter for aeration; at the same time, stepwise starting internal circulation from bottom to top along the height direction of the filter, and making microorganisms fully contacted with a filter material and attached to the filter material for growth; after a period of culture, discharging mixed liquor, adding high concentration wastewater to continue aeration culture, and exciting the activity of the attached microorganisms; and after a membrane is formed, discharging the high concentration wastewater, continuously introducing water, and making the hydraulic load from low to high until forming a stable biological membrane. The method utilizes current disturbance action formed by the internal circulation of the sludge and water mixed liquor in the biological filter to overcome sludge deposition, strengthens the adhesive ability of the microorganisms on the surface of the filter material, improves local membrane hanging effect, and improves the whole membrane hanging efficiency of the filter and the shock load resistance of the biological membrane.

The invention relates to a suspended packing microbial quick film forming method, which is characterized by: aerating sludge for 48 hours, inoculating aerated sludge serving as bacteria to be inoculated onto a sequencing batch reactor (SBR) filled with a suspended packing, aerating for 6 hours, standing and settling for 6 hours; adding nutritive medium, aerating for 10 hours, standing and settling for 2 hours and finishing an operation cycle, wherein two cycles of operation are made each day, and in the operation cycles, sludge is drained to keep the suspended solid concentration of the sludge within a range from 2 to 20 g / L constantly; and operating for 7 to 25 days and finishing the film forming. In the invention, by controlling the suspended solid concentration of the sludge, the competition between the sludge and nutrients is inhibited so as to allow biofilms to obtain enough nutrients. The method has the advantages of quick film forming, simple method, easy operation and high practicality. Thus, the method is suitable for suspended packing film forming of all kinds of sewage / wastewater and river water.

The invention relates to a layered ecological floating bed for intensifying a natural biofilm suspension membrane and a construction method. The vertical floating bed is formed by four layers which are a plant growth area, a combined packing area (1), a flotage area (2) and a suspension packing area from top to bottom. The combined packing area and the flotage area form a floating bed frame (4); anatural biofilm suspension membrane is arranged in the floating bed frame; the flotage area is filled with aquaculture floating balls (3); in the suspension packing area, a vertical elastic packing (6), a combined packing (7), a biological rope and a nanometer material are suspended on a packing suspension rope (5). According to the layered ecological floating bed for intensifying the natural biofilm suspension membrane and the construction method provided by the invention, a biofilm technology is combined with the ecological floating bed, and an improved characteristic of the vertical layered ecological floating bed structure and a matrix-adding function are fully utilized, so that the depth of the floating bed provided by the invention in water is greatly lager than the depth of a traditional ecological floating bed in water, and the floating bed provided by the invention also has a water body purification function in a deeper water body. The layered ecological floating bed for intensifying the natural biofilm suspension membrane provided by the invention is applicable to eutrophication restoration of water bodies such as rivers, lakes and aquaculture ponds.

The invention discloses a special cultivation substrate for dendrobium officinale. The special cultivation substrate comprises a bottom-layer substrate, a middle-layer substrate and an upper-layer substrate stacked sequentially from bottom to top, wherein the bottom-layer substrate is prepared from 10-20 parts of bean stalk or 15-25 parts of dry sugarcane leaves; the middle-layer substrate is a mixture of 5-15 parts of red brick powder, 15-30 parts of composted alcohol biogas residues and the like; the upper-layer substrate is a mixture of 15-35 parts of modified biological carbon, 15-45 parts of deadwood, 5-15 parts of expanded perlite and the like. The preparation method of the planting substrate comprises steps as follows: preparation of the modified biological carbon, preparation of the bottom-layer substrate, the middle-layer substrate and the upper-layer substrate and stacking of the bottom-layer substrate, the middle-layer substrate and the upper-layer substrate. The preparation method is simple and easy, the prepared planting substrate overcomes the defects that conventional substrates are rotten and air-impermeable and cannot hold water after being used for a long time, is low in cost, has rich nutrition and facilitates growth of dendrobium officinale, stems of dendrobium officinale grow more strongly, and root systems of dendrobium officinale are well developed.

The invention discloses a planting substrate for dendrobium officinale. The planting substrate comprises a substrate A, a substrate B and a substrate C which are arranged in a manner of being superposed sequentially from bottom to top, wherein the substrate A is prepared from 10-20 parts (by weight) of dried rice straws or dried sugarcane leaves; the substrate B is prepared from 5-20 parts (by weight) of medium sand, 10-30 parts (by weight) of edible fungus leftovers, and the like; and the substrate C is prepared from 15-45 parts (by weight) of biocarbon, 15-45 parts (by weight) of semi-corroded miscellaneous tree branches, 15-45 parts (by weight) of tung fruit peels, 15-45 parts (by weight) of corncobs, 15-45 parts (by weight) of pine barks, and the like. A preparation method for the planting substrate comprises the steps of preparing the biocarbon, preparing the substrate A, the substrate B and the substrate C and then carrying out superposition. The preparation method for the planting substrate is simple and easy to understand; and the planting substrate prepared by the preparation method has the advantages that the condition that the substrate is rotted, is air-proof and does not hold moisture in long-term use is overcome, the cost is low, the nutrition is complete, the growth of the dendrobium officinale is better facilitated, dendrobium officinale stems are promoted to grow more sturdy, and dendrobium officinale root systems are promoted to be more developed.

The invention discloses a Dendrobium officinale culture medium, which comprises a base layer, a buffer layer and a medium layer, wherein the base layer, the buffer layer and the medium layer are successively overlaid from bottom to top; according to parts by weight, the base layer is prepared from 10-20 parts of dry wheat straw or 10-20 parts of dry sugarcane top, the buffer layer is prepared from the mixture of 5-10 parts of silkworm excrement, 10-20 parts of leaf mold and the like, and the medium layer is prepared from the mixture of 15-25 parts of modified charcoal, 15-45 parts of rotten wood or tree, 5-15 parts of expanded perlite and the like. The preparation method of the plantation medium is obtained by overlapping the preparation of the modified charcoal and the preparation of the base layer, the buffer layer and the medium. The preparation method is simple and easy to understand. The plantation medium prepared from the Dendrobium officinale culture medium overcomes the defects that the medium is rotten and airtight and does not realize water retention after the medium is used for a long time. The Dendrobium officinale culture medium has the advantages of low cost and complete nutrition, is favorable for the growth of Dendrobium officinale and accelerates the stem of the Dendrobium officinale to be thicker and the root system of the Dendrobium officinale to be developed.

The invention discloses a dendrobium officinale planting substrate containing modified biochar, which comprises substrate A, substrate B and substrate C arranged sequentially from bottom to top; according to the ratio of parts by weight, substrate A is 10-20 parts of dry rice straw Or 10-20 parts of dry sugarcane leaves; substrate B is 5-20 parts of silkworm excrement, 10-30 parts of rice bran, etc.; 45 copies etc. The preparation method of the planting substrate is the preparation of modified biochar, the preparation of substrates A, B and C, and then superposition. The preparation method of the present invention is simple and easy to understand, and the planting substrate prepared by the present invention overcomes the long-term use of the substrate, rots and airtight, does not retain water, and has low cost and complete nutrition, which is more conducive to the growth of Dendrobium candidum, and promotes the growth of Dendrobium candidum Stronger and more developed root system.

The invention discloses a wild-imitating planting substrate for dendrobium huoshanense. The wild-imitating planting substrate comprises a bottom-layer substrate, a middle-layer substrate and an upper-layer substrate which are arranged in a manner of being superposed sequentially from bottom to top, wherein the bottom-layer substrate is prepared from 10-20 parts (by weight) of dried corn stalks or dried sugarcane leaves; the middle-layer substrate is prepared from a mixture of 5-15 parts (by weight) of vermiculite and the like; and the upper-layer substrate is prepared from a mixture of 15-35 parts (by weight) of modified biocarbon, 15-45 parts (by weight) of rotten wood and the like. A preparation method for the planting substrate comprises the steps of preparing the modified biocarbon, preparing the bottom-layer substrate, the middle-layer substrate and the upper-layer substrate and then carrying out superposition. The preparation method for the planting substrate is simple and easy to understand; and the planting substrate prepared by the preparation method has the advantages that the condition that the substrate is rotted, is air-proof and does not hold moisture in long-term use is overcome, the cost is low, the nutrition is complete, the growth of the dendrobium huoshanense is better facilitated, dendrobium huoshanense stems are promoted to grow more sturdy, and dendrobium huoshanense root systems are promoted to be more developed.

The invention relates to an inorganic material carrier applied to an ecological floating bed, aiming at solving the technical problems that the existing floating bed carrier easily causes secondary environmental pollution and potential safety hazards and the application cost is high. The inorganic material carrier is prepared from the following raw materials in parts by weight: 10-15 parts of ceramsite, 8-12 parts of expanded vermiculite, 8-15 parts of pumice, 5-10 parts of biomass charcoal, 3-8 parts of attapulgite, 5-10 parts of silicate cement, 5-15 parts of kieselguhr, 5-10 parts of kaolin, 5-10 parts of pulverized fuel ash, 0.5-1.5 parts of polypropylene fiber and 1-3 parts of water reducing agent. The inorganic material carrier is environment-friendly, has no pollution, has stable physicochemical property, high mechanical strength, long service life and good microorganism affinity, facilitates microorganism growth and breeding, improves the microorganism film forming efficiency, has good water body purifying effect, wide raw material sources, low price, no introduction of polluted substances and low using and maintaining costs, and is easy to popularize.

The invention discloses a biofilm culturing method for treating domestic wastewater, and solves the problem of low biofilm culturing speed of domestic wastewater treatment equipment. The biofilm culturing method for treating domestic wastewater has effects of improving a biofilm culturing effect of nitrifying bacteria and shortening starting time of equipment. According to the technical scheme, the biofilm culturing method for treating domestic wastewater comprises the following steps: firstly, inoculating activated sludge in a sequencing batch reactor with a filler, and aerating for 2 days; secondly, adding a nutrient, taking 1-hour static settling, 0.5-hour water draining, 0.5-hour water feeding and 10-hour aerating as a running period, and running two periods every day so that an irreversible biofilm culturing stage is changed into a reversible biofilm culturing stage; and changing running conditions and sludge concentration, taking 1-hour static settling, 0.5-hour water draining, 0.5-hour water feeding and 22-hour aerating as a running period, running a period every day, and continuously culturing for several days to finish a biofilm culturing process.

The invention discloses a dendrobium huoshanense special-purpose planting matrix, comprising a matrix A, a matrix B, and a matrix C which are arranged in an overlaying manner from bottom to top in sequence. According to weight part ratio, the matrix A contains 10-20 parts of dry sorghum stalks or 10-20 parts of dry sugarcane leaves, the matrix B is a mixture of 10-15 parts of silkworm excrement, 10-20 parts of mature ethyl alcohol biogas residue, etc., and the matrix C is a mixture of 10-25 parts of modified charcoal, 15-45 parts of rotten wood, 2-5 parts of a trichoderma spp agent. The manufacturing method for the planting matrix comprises: manufacturing the modified charcoal, manufacturing the matrixes A, B, and C, and overlaying to form the planting matrix. The manufacturing method is simple and easy to understand, and the manufactured planting matrix overcomes problems that a matrix is rotted and does not ventilate and does not retain water after long time use. The matrix is low in cost, complete in nutrition, and is beneficial for growth of the dendrobium huoshanense, and promotes stems of the dendrobium huoshanense to grow thicker, and roots to be more developed.

The invention discloses a planting matrix for artificial planting of Caulis Dendrobii. The planting matrix comprises a matrix A, a matrix B and a matrix C which are sequentially stacked from bottom to top, the matrix A is composed of, in parts by weight, 10-20 parts of dry wheat straw or 10-20 parts of dry rice straw, the matrix B is a mixture of, in parts by weight, 5-10 parts of medium sand and 10-20 parts of leaf mold, and the matrix C is a mixture of, in parts by weight, 15-25 parts of modified biochar, 15-45 parts of rotten wood, 5-15 parts of expanded perlite and 10-35 parts of pine bark. The preparation method of the planting matrix includes: preparing the modified biochar, preparing the matrixes A, B and C, and stacking the matrixes A, B and C. The preparation method is simple and easy to understand, the planting matrix prepared by the method overcomes the defect that existing matrixes after being used for a long time are rotten and airtight and do not conserve water, and is low in cost, complete in nutrient, more conducive to growing of Dendrobium Officinale and capable of promoting stems of Dendrobium Officinale to grow thicker and stronger and promoting root systems to be more developed.

The invention discloses a preparation method of a novel bio-magnetic suspension filler for water treatment. According to the method, a magnetic powder is activated after alkali modification, then polyurethane is subjected to copolymerization modification with an organic silicone emulsion, a dispersing lubricant, a crosslinking agent and a pore-forming agent are added for high-speed kneading to obtain a mixed material, the mixed material is directly subjected to extrusion forming and cutting, the pore-forming agent is removed by vacuum drying to make the interior of the formed filler porous toobtain a suspension filler, the suspension filler is magnetized and then loaded with a surface-enhancing component to obtain the bio-magnetic suspension filler.

The invention discloses a preparation method for a biological membrane, relates to the technical field of water treatment and solves the problem of low efficiency of wastewater treatment. The preparation method for the biological membrane comprises the following steps: adding active sludge and ulothrix into wastewater; and controlling the environment of the wastewater to meet conditions of membrane formation so as to form an algae-bacteria symbiotic membrane in the wastewater, wherein the conditions of membrane formation are as follows: the temperature of the wastewater is 15 to 35 DEG C; the pH value of the wastewater is 6 to 9; and the DO of the wastewater is 2 to 8 mg / L. The preparation method provided by the invention can extremely improve membrane formation efficiency, and can rapidly form a zoogloea-adhered algae-bacteria symbiotic biological membrane with ulothrix as a skeleton.

A process for preparing the calcined natural minerals adsorbing-filtering agent includes such steps as proportionally adding its raw materials into stirrer, mixing, pressing to become sheets, drying in the sun, pulverizing, calcining, cooling and packing. It is used for the non-calcined filtering plate (or block or core) to clean the animal or plant cultivating water.

The porous filming material for water treatment consists of clay 30-60 wt%, loess 30-60 wt%, kaolin 5-20 wt% and pore creating material 5-20 wt%. The product of the present invention is spherical haydite, and has high mechanical strength, high erosion resistance, high wear resistance and stable physical and chemical properties as well as rich pores, rough surface, great specific surface area, long service life, high adsorption performance, etc. It has high dirt intercepting capacity and high filming efficiency, is suitable for the growth and propagation of microbe and may be used to eliminate organic matter, suspension, nitride, phosphate, etc from water.

The invention belongs to the technical field of water quality improvement and particularly provides a method for removing nitrate nitrogen in water, an electrode biofilm culturing method, an electrode and a device. The method for removing nitrate nitrogen in water comprises the following steps that 1, magnetic powder is added into sludge for domestication, so that microbes attach to the surface of the magnetic powder to form activated magnetic powder sludge; 2, the activated magnetic powder sludge is added into a magnetic electrode reactor provided with a magnetized cathode; 3, air is led to the activated magnetic powder sludge in the magnetic electrode reactor for reaction, and the cathode of the magnetic electrode reactor forms the electrode biofilm under the attraction of current impact and the magnetic electrode. By improving the adsorption capacity between the electrode and the microbes, the microbe biofilm culturing rate and biofilm culturing amount on the surface of the electrode are increased, and thus the nitrate removal rate can be improved.

The invention discloses a method for improving the biofilm forming efficiency of packing in a water treatment reactor. The method comprises the following implementation steps that activated sludge isinoculated in the reactor, the reactor is operated in a sequencing batch, the hydraulic retention time is 4 h, and according to each rotary group, water is fed for 5 min, aeration is performed for 108-111 min, standing settling is performed for 2-5 min, and water is drained for 2 min, wherein organic loads of water feeding are 6-12 g / (L d), and the air flow rate is 1.6-2.4 cm / s; when the reactor is operated at the second to fourth days, aerobic granular sludge containing a large number of film forming microorganisms is formed inside the reactor, and the packing is put into the reactor; 2-5 d after the packing enters the reactor, film forming is completed. Compared with other film forming methods, the film forming method has the advantages that no high-cost special microorganisms or substrate needs to be added, and the film forming cost is low; meanwhile, the operation cost is lowered, the film forming time of the packing is shortened to 2-5 d, and the film forming efficiency of a biofilm method is greatly improved.

The invention discloses a submerging type ecological water cube system used for black and stink water body pollution treatment, ecological restoration, water quality improvement, and water body maintenance in rivers, lakes, reservoirs, river mouths, and gulfs. The submerging type ecological water cube system comprises tank bodies, aeration guide rods, ecological water lungs, emergent aquatic plants, submerged plants, a microbial carrier inoculated with microbes, and external artificial light sources; the emergent aquatic plants and the submerged plants grow on system upper surface and peripheral side surfaces respectively, so that full utilization of the three-dimensional space from water bottom to water surface is realized, the contact effect area of plants with water body is enlarged, full absorption on nitrogen phosphor, reduction of suspension matters, and supplement of ecological oxygen demands are realized; the microbial carrier is inoculated with a microbial agent to increasedmicrobe contact effect specific surface area; the ecological water lungs composed of aquatic animals are used for filtering and eating of eutrophic substances such as planktonic algae, suspension particles, and organic chips, water plant photosynthesis and adsorption effect on nitrogen and phosphor are promoted, water body black color and stink smell are eliminated, and a water body ecological system is established.

The invention discloses a method of preparation natural mineral adsorption filtration plate. Key point of technical project is: selecting natural mineral adsorption filtration agent as raw material, moistening with water, pressing to rectangle plate, airing, roasting, cooling and getting the product. There is interconnection labyrinth-type micropore in the filtration plate which is benefit for organic bacterium growth and reproduction and decreases ammonia and nitrogen content of breed water body. The oxygen content of breed water body can increase by aeration process. The natural mineral adsorption plate has fast filtration speed and high adsorption ability for diversified harmful substance generated by organism metabolism and heavy metal, and is adapted for breed water purifying and other water quality process.

The invention discloses an ecological sinking bed for deep polluted river treatment and in-situ remediation and a method thereof, and belongs to the field of environmental protection devices. The ecological sinking bed comprises a frame body, and the frame body is divided into plant planting areas located on the two sides and a filling area located in the middle. The plant planting area is used for planting aquatic plants, and the filling area is sequentially filled with zeolite, a solidified microorganism filler and a three-dimensional elastic filler from bottom to top in a layered mode. Theecological sinking bed is characterized in that the water body is purified in multiple modes by combining the physical adsorption and microbial degradation effects of the filler and the zeolite surface and the purification function of plants such as reeds, and a knife edge is designed for cutting the reeds, so that the problems of unfavorable conditions of easy damage, short tolerance time and thelike of floating beds due to large rain water flow speed and sun exposure and difficult recovery caused by rooting of the reeds are solved. The ecological settling bed is nontoxic and harmless in material, is not easy to damage, is durable, is convenient to recycle and reuse after finishing, and does not generate secondary pollution.

The invention discloses a method of preparation natural mineral adsorption filtration core. Key point of technical project is: selecting natural mineral adsorption filtration agent as raw material, moistening with water, pressing to cylindrical porous object, airing, roasting, cooling and getting the product. There is interconnection labyrinth-type micropore in the filtration core which has the excellence of large specific surface area, fast filtration velocity, good adsorption capability, high film suspension efficiency and strong sewage stop ability. The labyrinth-type micropore is benefit for organic bacterium growth and reproduction and decreases ammonia and nitrogen content of breed water body. The oxygen content of breed water body can increase by aeration process. The natural mineral filtration core can adsorb diversified harmful substance generated by organism metabolism and heavy metal, and is adapted for breed water purifying and other water quality process.

The invention discloses a detachable inorganic material ecological floating bed device for sewage treatment. The detachable inorganic material ecological floating bed device comprises a water inlet (1), a floating bed carrier (2) and a water outlet (6), wherein a planting basket (4) is embedded in the floating bed carrier. An ecological floating bed consists of a detachable bed body and the planting basket, plants can be replaced according to the growth conditions so that the purification effect of the ecological floating bed is ensured; a floating bed body is made of clay and foam which are used as inorganic materials so as to have higher microbial affinity and be beneficial to microbial film colonization; the clay and the foam for preparing the floating bed body also have a certain adsorptive power so that the purification capacity of an ecological floating bed system can be further improved; and the planting basket (4) is internally filled with materials (5) such as waste masonry, vermiculite and the like and is used as a carrier for microbial film attachment while functioning for preventing plants from lodging, so that the microbial biomass of the floating bed is increased. In a word, the detachable inorganic material ecological floating bed device is simple and reasonable in structure and ideal in a treating effect of eutrophic water.

The invention discloses a method for promoting a biofilm culturing effect by modifying the surface of polyurethane. According to the method, polyurethane is used as a template material in a layer-by-layer self-assembly process; iron and manganese ions cover the surface of the material through pretreatment of an iron-manganese salt solution, so that the surface of the material has certain surface positive charges; and plasma grafting modification is carried out to generate a large number of active free radicals on the surface of the material, covalent reaction with sodium alginate is carried out, finally, a layer-by-layer self-assembly process is realized under the driving of electrostatic force between a polyanion compound sodium alginate and a polycation compound chitosan, and therefore,a stable layered composite structure is formed on the surface of the material. By chemically modifying the surface of polyurethane, the obtained plasma modified iron and manganese ion-sodium alginate-chitosan layer-by-layer self-assembly material is good in biocompatibility, high in chemical stability, safe, non-toxic, simple to operate, low in cost and easy to obtain. By using the method, the microorganism immobilization efficiency can be effectively improved.

The invention discloses a high concentration waste emulsion deep treatment system. The system at least includes: an acid-base regulating pool, which is used for adjusting the pH value of waste emulsion; a demulsification reaction stirring pool, which is used for receiving the waste emulsion subjected to pH value adjustment by the acid-base regulating pool, and adding a PAC and PAM mixed demulsification solution; an inorganic ceramic membrane purifier, which is used for receiving the liquid output by the demulsification reaction stirring pool and purifying the liquid under a pressure state. According to the invention, the PAC and PAM combination is adopted as the demulsifier, charged oil droplets, colloid, suspended matters and other large particle substances in the waste emulsion are connected by adsorption bridging effect, therefore oil and water are separated to achieve the oil-water separation purpose. Then an inorganic ceramic membrane is used as the main body separation process, and by means of physical interception, low concentration waste emulsion can flow into a purification water tank through the ceramic membrane, and the oil droplets, colloid, suspended matters and otherlarge particle substances can flow back. The high concentration waste emulsion deep treatment system provided by the invention realizes low energy consumption, high efficiency and synchronous removalof pollutants from the waste emulsion.

The invention discloses a suspended biological film filler of composite trace metal ions for treating industrial wastewater and a preparation method of the suspended biological film filler. The preparation method adopts a melt injection molding technology to compound a high polymer filler matrix with different types of trace metal elements needed by the growth of a biological film so as to prepare a suspended biological film filler material for treating the industrial wastewater. According to the preparation method, a preparation process for compounding the filler matrix with the different types of trace metal elements is used, so that the defects that a common suspended biological film filler is less in film culturing quantity, long in film culturing time and low in water treatment efficiency can be effectively improved, and the composite filler containing certain trace metal elements can be used for effectively treating certain specific wastewater. The biological film filler disclosed by the invention is pioneering, the process cost is low, the preparation condition is simple in requirement, and the preparation time is short, so that the preparation method is particularly suitable for preparing the high-performance suspended biological film filler on a large scale.

The invention discloses an efficient denitrification method and an efficient denitrification system for landfill leachate. The system comprises an adjusting tank, an electric flocculation system, a short-cut nitrification-anaerobic ammonia oxidation system and a photocatalysis-persulfate oxidation system which are connected in sequence, wherein the short-cut nitrification-anaerobic ammonia oxidation system is filled with a tourmaline and glass pumice composite filler, and the photocatalysis-persulfate oxidation system is provided with a persulfate adding device and bentonite loaded nano titanium dioxide. According to the invention, landfill leachate is treated by utilizing an electric flocculation coupling short-cut nitrification-anaerobic ammonia oxidation technology and a photocatalysis-persulfate technology, so that ammonia nitrogen, organic matters and heavy metals in landfill leachate are efficiently removed.

The invention relates to a flat membrane rapid suspension method by using an embedded microbe gel and a special coating apparatus. The method comprises the following steps: polyvinyl alcohol and a sodium alginate hydrogel material are mixed with water, a mixture is fully dissolved and uniformly mixed in a water-bath pan at the temperature of 90 DEG C, the mixture is cooled to room temperature, activated sludge is added and uniformly mixed to prepare gel liquid; the surface of a flat membrane is coated with gel liquid by using the special coating apparatus, the flat membrane coated with the gelis pre-refrigerated and solidified for 1 h at low temperature of 4 DEG C so that a gel form is stable, the flat membrane is placed in crosslinking liquid and is subjected to a chemical fixed crosslinking reaction for 12 h, the flat membrane is taken out, and the superfluous crosslinking liquid is washed with water. The microbe-embedded gel material is loaded to the surface of a traditional aeration membrane to form a composite film aeration biomembrane, so that a gel layer having microbe activity is rapidly formed at the surface of the aeration membrane, and optimum sewage processing effect can be achieved through reasonable control of biomembrane thickness and embedding sequences of different microbes.