31 results about "Thalia dealbata" patented technology

The invention relates to preparation for an active carbon material, aiming at providing an efficient and safe preparation method for an active carbon material for adsorbing phosphorus in a water body. The method comprises the following steps of: naturally air-drying thalia dealbata for 7 days, chopping, grinding into a powder, sieving, and then placing in an oven and drying for 3 hours; placing the dried powder in a carbonization furnace, performing high-temperature carbonization while charging nitrogen, heating to 500 DEG C, insulating heat for 2 hours, and then cooling to a room temperature; and performing high-temperature activation while charging carbon dioxide gas in the carbonization furnace, heating to 600 DEG C, insulating heat for 2 hours, and then cooling to a room temperature to obtain the product. Via the preparation method disclosed by the invention, the problem of plant waste treatment in water body purification is solved, the possibility that plant branches and leaves contaminate the water body after being withered is prevented, and waste is turned into wealth; and the prepared biomass active carbon is used for further purifying the water body, thus solving the problem of the possibility of secondary pollution in the water body which is purified by active carbon. The preparation method has the advantages of being high in treatment efficiency, economic and practical, green and environment-friendly, cyclic in purification and the like, as well as achieves the expected effect of efficient decontamination.

The invention discloses a method for planting thalia dealbata on a side slope. The method comprises the following steps: 1) preparing the slope surface: a layer of planting nutrient soil with thickness being 20-30 cm and a layer of gravelly soil with thickness being 5-10 cm are laid on the slope surface from bottom to top sequentially; 2) building ecological concrete: the ecological concrete is poured on the slope surface and is prepared through the following step: gravel, cement, silicon dioxide micro powder or fly ash, a water reducing agent and water are mixed and stirred in parts by weight; 3) planting the thalia dealbata; 4) performing conservation: performing watering 3-7 times each day after sowing, removing non-woven fabric after germination, and applying fertilizer once every 7 days. According to the method, a perennial aquatic plant, namely, the thalia dealbata is adopted as a planting variety and has developed roots, as well as high tillering capacity, growth rate and ornamental value, so that soil on the side slope can be effectively fixed, the ecological environment can be effectively improved, and the environment can also be well beautified.

The invention discloses a matched combination of wetland plants having high capability of purifying sewage. Combinations having high capability of removing nitrogen and phosphorus in the sewage are as follows: water lily and thalia dealbata; water lily, common callalily, Zizania aquatica and calamus (S+M+J+C); water lily, thalia dealbata and iris (S+Z+Y); and water lily, thalia dealbata, calamus and Zizania aquatica (S+Z+C+J). Seven wetland plants different in ecotype are selected and combined and allocated together, so that 10 combinations are obtained. The matched combination aims to optimize aquatic plant arrangement and improve the cleaning effect for nitrogen and phosphorus in the sewage, thereby providing theoretical basis for building an artificial wetland and an artificial composite ecological bed, and for selecting and applying wetland plants in controlling water eutrophication. As a result, zero emission of sewage can be realized economically and efficiently, and reference and basis are provided for constructing beautiful ecological landscapes.

The invention relates to preparation for an active carbon material, aiming at providing an efficient and safe preparation method for an active carbon material for adsorbing phosphorus in a water body. The method comprises the following steps of: naturally air-drying thalia dealbata for 7 days, chopping, grinding into a powder, sieving, and then placing in an oven and drying for 3 hours; placing the dried powder in a carbonization furnace, performing high-temperature carbonization while charging nitrogen, heating to 500 DEG C, insulating heat for 2 hours, and then cooling to a room temperature; and performing high-temperature activation while charging carbon dioxide gas in the carbonization furnace, heating to 600 DEG C, insulating heat for 2 hours, and then cooling to a room temperature to obtain the product. Via the preparation method disclosed by the invention, the problem of plant waste treatment in water body purification is solved, the possibility that plant branches and leaves contaminate the water body after being withered is prevented, and waste is turned into wealth; and the prepared biomass active carbon is used for further purifying the water body, thus solving the problem of the possibility of secondary pollution in the water body which is purified by active carbon. The preparation method has the advantages of being high in treatment efficiency, economic and practical, green and environment-friendly, cyclic in purification and the like, as well as achieves the expected effect of efficient decontamination.

The invention provides a method of fixing and stabilizing a heavy metal Pb in lake bottom mud by using thalia dealbata. The method comprises the steps of conducting group planting and block planting on the thalia dealbata beside a pool and a lake in a wetland scenic spot in the spring, avoiding post-floral plant division in the plum rain season, cutting of residual leaves and excessive branche of plants, allowing planting density to be 6-8 groves / m<2>, 1-2 plants per grove, covering with soil and compressing after growing, before seed maturation in the autumn, harvesting the overground thalia dealbata, excavating part of underground rhizomes for appropriate treatment, and repeating the process next year. The method can exert an effect of purifying heavy metal Pb pollution of a water body and the bottom mud. The thalia dealbata is a perennial emergent aquatic plant, is fond of warmth and water dampness, resistant to partial shade, higher in biomass, relatively easy to manage, and high in viewing value after blossom, so that the thalia dealbata planted in the wetland scenic spot can exert effects of beautifying and purifying an environment; and the method is a water body environment purification method with a very high ecological value.

The invention relates to an artificial wetland with combined fillers, which sequentially comprises a water inlet area, a wetland processing unit area and a water outlet area, wherein the wetland processing unit area sequentially comprises a gravel filler section, an iron carbon filler section and a manganese sand filler section; and a soil covering layer and wetland plants are arranged on the surface of the wetland. By using iron carbon, manganese sand and gravels as combined fillers and using emerging plants (such as cattail, Scirpus tabernaemontani, Thalia dealbata, reed and the like) having large biomass, salinization resistance and high metal and organic substance adsorptive power as a composite plant bed, the invention forms a horizontal subsurface flow artificial wetland. Thus, when industrial waste water moves into the artificial wetland, pollutants can be removed on the basis of a series of physical, chemical and biological interaction among the fillers, plants and microorganisms. The process provided by the invention has high pollutant shock load resistance and good treatment effect. Besides, the outlet water is stable, and main indexes of the outlet water can meet the Reuse of Urban Recycling Water - Water Quality Standard for Industrial Uses (GB / T 19923-2005). Thus, the outlet water can be recycled as circulating cooling water for steel enterprises.

The invention relates to the field of water quality purification and particularly relates to a biological repairing method of surface water. A water body is purified by combined planting of floating-leaved plants, submerged plants and emergent aquatic plants, wherein the floating-leaved plants include myriophyllum aquaticum, water poppy and water lily; the submerged plants include hydrilla varticillata; and the emergent aquatic plants include papyrus, rushes, clinopodium urticifolium, reeds, canna, Brazilian pennywort, scirpus tabernaemontani, pontederia cordata, cattail, fleur-de-lis, thalia dealbata and rhizoma calami. According to the biological repairing method of surface water provided by the invention, the water body is purified by combined planting of floating-leaved plants, submerged plants and emergent aquatic plants and the polluted water can be purified by the combined actions of precipitation and filtration of aquatic plants and roots of the plants. The water is remarkably clearer than water before the plants are planted. A part of detection indexes of the polluted water source are converted into standard water quality within 2 months. All indexes substantially meet the standard within a half year. The method is short in purifying time, good in purifying effect and stable in purifying effect.

The invention relates to a rural sewage treatment method which comprises the following steps: 1) introducing rural domestic sewage into a grille well and enabling the water filtered by grille well to enter a facultative pond; 2) enabling the sewage treated by the facultative pond to enter a biological filter, wherein the biological filter is filled with an elastic filter material made of a high-molecular organic material, the porosity is 75-98 percent, the aperture is 6-8 mm, and the specific surface area is 10-35 m<2> / g; 3) enabling the water filtered by the biological filter to enter a vertical subsurface flow constructed wetland, wherein thalia dealbata is planted in the constructed wetland; 4) enabling the water treated by the constructed wetland to enter an ecological pond and discharging effluent treated by the ecological pond to a natural water body, wherein lotuses, hornworts and water lilies are planted in the ecological pond; in the sewage treatment process, the water in the biological filter continuously flows back to the facultative pond. The method provided by the invention is suitable for scattered rural villages and stable in treatment effect, and the odor emission and the breeding of mosquitoes and flies can be greatly reduced.

A method for the collection and ecologic treatment of domestic sewage of villages and towns in plain water network region comprises the following steps: constructing ecologic concrete wall along creeks or shores of lakes and ponds so as to form ecologic regulation ditches with the shores, and enabling peasant households living along the shores to drain domestic sewage into the ecologic regulation ditches taking the village or town as a unit; leading part of the sewage to pass ecologic concrete wall with filtration entrapment and biological degradation functions for filtration entrapment and biological degradation, so as to remove pollutants; planting calamus, thalia dealbata and other natural aquatic plants in the ecologic regulation ditches, so that part of the sewage is degraded by the ecologic regulation ditches with an automatic oxygenation function to purify water; and ensuring that outlet water enters into the creeks or rectangular purification floating islands of the lakes and ponds, as well as landscape floating islands planted with canna, eichhornia, rush, calamus, cyperus alternifolius, loosestrife, arundo donax var, versicolor, and other aquatic plants in clusters for deep purification. The invention can treat the domestic sewage of scattered villages and towns under the premise that a sewage collection pipe network and a sewage collection system are not constructed, and has the characteristics of sound effect, low running cost, maintenance convenience, remarkable ecologic benefits.

The invention discloses a method for building river course ecological restoration vegetation. The method comprises the following steps of: (1) restoring submerged vegetation: planting submerged plants with high pollution resistibility such as hornworts, hydrilla verticillata and the like in an entire engineering region in a dispersed way to restore and rebuild submerged vegetation; (2) planting riparian plants: planting emergent aquatic plants and rooted floating plants such as meadow rush, scirpus yagara, scirpus tabernaemontani, thalia dealbata, calamus, cattail, rumex dentatus, ranunculus sceleratus, water-garden iris, monochoria korsakowii and the like respectively on river sloping banks in the entire engineering region to restore and rebuild a sloping bank and riparian emergent aquatic plant community; and (3) restoring flood land vegetation: comprehensively restoring flood land vegetation such as reed, cyperus glomeratus, wire grass, festuca elata, dallas grass and the like in the entire engineering region except a part of building land. Due to the adoption of the method, the ecological problems of pollution and degeneration of river course water quality, poor river self-cleaning capacity, sharp fall in biodiversity and the like are solved effectively, and a practicable and effective ecological restoration measure is provided for natural restoration and rebuilding of a river course.

The invention discloses a modified charcoal microballoon, and a preparation method and an application thereof. The preparation method for the modified charcoal microballoon comprises the following steps: (1) taking thalia dealbata powder, soaking in a soluble magnesium salt solution, filtering, taking out and then drying, thereby obtaining magnesium modified thalia dealbata powder; (2) carbonizing the thalia dealbata powder, thereby obtaining the modified charcoal; (3) taking the modified charcoal, and by taking a sodium alginate solution as an embedding medium and CaCl2 solution as a cross-linking agent, performing gel embedding and drying after embedding, thereby acquiring the modified charcoal microballoon. According to invention, the thalia dealbata powder is modified with magnesium at first, and then the modified thalia dealbata powder is taken as a precursor for carbonization, and lastly, the sodium alga acid solution is taken as the embedding medium for preparing the modified charcoal into microballoon; the obtained modified charcoal microballoon can effectively remove phosphorus from water and the removal rate is high; the abandoned thalia dealbata is recycled, so that the resource utilization of the wastes is realized.