44 results about "Macrophyte" patented technology

A bioplastic composition may contain certain biodegradable and renewable components. In some examples, the bioplastic composition includes at least one kind of aquatic macrophyte biomass, which may contain a native composition of protein and carbohydrates, in a blend with one or more types of biodegradable or durable thermoplastic polymers. The aquatic macrophyte composition may provide a balance of both polymeric and reinforcing properties to the blended bioplastic not typically exhibited by terrestrial feedstock such as soy meal or corn starch. Such a bioplastic composition may be formed into molded articles using extrusion, injection molding, compression molding, or the like.

The invention discloses an ecosystem model and biomanipulation technology based eutrophic water body remediation method. Firstly, an ECOPATH model is used to fit the energy flowing mode of the currentecosystem, when the annual production of phytoplankton or aquatic macrophyte in a water body is too high, the minimum primary production requiring for maintaining the operation of the system is takenas the baseline according to the output result of the model, the consumption of the extra primary production in the system is increased through the predation action of fish by using a method of quantitatively adding a fish consumer, and meanwhile, the top-down effect is produced to control the biomass and the community structure of a primary producer. After finishing remediation, the ECOPATH model is used to access the fish catch, the commercial fish species added in the same year are harvested according to the assessment result, so that the balance of energy of the ecosystem is maintained, the fishing catch directly takes away a large quantity of nutritive salts in the water body, and certain economic value is produced. The novel thinking for reference and the technical support are provided for the remediation method taking the scientific experiment as the method from the perspectives of ecology, quantity and energetics, and the method has a very important application value for the ecological remediation of the damaged water body.

The invention relates to the field of remote-sensing monitoring of water quality, in particular to a method for remote-sensing monitoring of water quality of macrophytic regions of macrophytic lakes. The method has the advantages that types and phonological characteristics of macrophytes are acquired through acquisition of a normalized differential vegetation index curve of the macrophytes in a research area, the macrophytes in the research area are recognized by combination of mono-temporal hyperspectral and multispectral images, and the problem that a traditional remote-sensing means performs remote-sensing retrieval on the water quality of the macrophytic regions difficultly due to the hindrance effect of the macrophytes is solved with the help of indicative effect of the macrophytes on the water quality.

The invention discloses a submerged macrophytes restoring process guided by water conservation fishery. By stocking silver carp and bighead carp and reducing COD (chemical oxygen demand), TP (total phosphor), chlorophyll and other chemical indexes of the water body, the process effectively reduces the algae biomass in the water body, improves the water body transparency, and achieves the aim of preventing algal bloom and improving the water quality, so an excellent growing condition is provided for aquatic macrophytes (in particular, the submerged macrophytes); and by adding fish and other key organisms eating attaching organisms, which is a key link in a food chain, the attaching organisms growing vigorously on the surface of the submerged macrophytes can be removed in time, and the aim of restoring the submerged macrophytes can be achieved.

The invention provides a method for implanting and cultivating Gracilaria bursa-pastoris in a north pond. By using the method, the problems of water eutrophication and the like, caused by the ecological imbalance owning to using the prior art for signal animal breeding in the north pond, can be solved. The cultivation process of the invention can be divided to a sprout proliferation phase, a bottom sowing propagation phase, an increasing interharvesting phase and an overwintering seedling protection phase. By using the invention, the problem that owning to the change of factors such as climate, growing environment and the like in the north, the transplanting of south macrophyte fails, can be solved; the method has effects of low input and high output, and the ratio of the fresh weight input to fresh weight output of the algae is 1:1500. The yield per mu is 1500kg. The method of the invention can be used to fill the gap of cultivating macrophyte in aestival pond of northern areas and the diversity of algae resources in northern China is enriched.

The invention discloses a biological and ecological sectional method for purifying and treating domestic sewage, comprising the following steps: sending the sewage into a first treatment system, comprising a hydrolysis acidification pool, a contact oxidation pond and a anaerobic settling tank, then sending the sewage into a second treatment system, comprising a biofilm belt aeration pipe oxidation pond; finally sending the sewage into a third treatment system, comprising a biofilm belt deep processing oxidation pond. The organisms for purifying and treating domestic sewage in three stage continuously comprises bacteria, algae, protozoa, metazoan, large-scale plants, fish, benthic animals and the like which form complete food chains and ecosystems and the organisms can deeply treat domestic sewage and has high nitrogen and phosphorus removal rate. By using the invention, the degradation function of natural organisms can be fully achieved, thus the water quality purification and improvement can be realized. The method has the advantages that the system has stable running, strong impact resistant and load resistant ability, high safety and high system controlling and regulating, the systematic upgrading of water quantity and water quality can be easily realized and a park-like sewage treatment plant can be established by combine the system with landscapes.

A facility for treating and recycling animal waste (2), including a unit (6) for methanizing the waste including treatment of the obtained biogases, a cogeneration unit (8) delivering electricity and heat (32) from the biogases, and a unit for hydroponically cultivating microalgae (14) in photo-bioreactors supplied by the liquid phase (12) of the organic residues from the methanization. The facility further includes a unit for cultivating macrophytes (22) supplied with water (20) leaving the unit for cultivating microalgae, and a vermiculture unit (24) fed by harvesting the macrophytes (22) and by the sludge (36) coming from the raw digestate from the methanization.

The present invention relates to a construction method for a water body self-cleaning ecological chain. The method comprises the following steps: feeding parent bacteria of common beneficial compound bacteria in water, wherein the feeding frequency is 1 time/month, and the feeding density of the parent bacteria of the common beneficial compound bacteria is 300 g/km(3); domesticating cladocera zooplankton, and enabling the cladocera zooplankton to eat cyanobacteria in a polluted water body; according to polluted indexes of the water body, feeding beneficial microorganisms in the water body, wherein the beneficial microorganisms can live together with the cladocera zooplankton; and planting submerged macrophytes on the water bottom, planting emergent macrophytes at shoreside of the water body, and planting floating macrophytes on the surface of the water body. The water body ecological restoration effects can ensure that water is crystal clear, main eutrophication indexes of water can reach a national surface water third-class water quality standard (a drinking water resource basic standard), and wherein data can be measured by a a water quality monitoring authority.

A process for stabilization of biological sludge provides the step of laying in a containing volume, or basin (1), a draining material (2). In particular, the layer of draining material (2) can be a layer of gravel having granulometry set between 40 and 70 mm and a height (hi) about 25 cm. On the first layer (2) a second draining layer (3) can be laid comprising a material, for example gravel having granulometry less than the first layer (2), set between 4 and 6 mm. The second layer (3) has preferably a height (h2) about 15 cm. Once made the draining layers (2, 3) a planting step is made in the second layer (3) of a plurality of seedlings of an aquatic macrophyte, preferably Phragmites australis (10). The base granular filtering gravel layer has also the function of supporting the root ofthe seedlings. To ensure a high efficiency of the process a measured density of plants is chosen, corresponding to a relative distance between two seedlings of Phragmites australis set between 40 and60 cm. once achieved a measured vegetative growth, a first spilling in the containing volume (1) is carried out of an amount of biological sludge (12). The amount of sludge (12) fed in the containingvolume (1) corresponds to a predetermined height, set between 2 and 4 cm, of the layer of sludge (12) on the draining layer (3).

A method for managing plant biomass in a wetland containing floating macrophytes includes the steps of draining a body of water having wetland plants growing thereon and permitting the plants to dry. The dried plant matter is then tilled into the bed of the water body, along with a coagulant. The body of water is then re-flooded, and another remediation cycle begun. In a particular embodiment the bed of the body of water has a first depth over a first area of the bed and a second depth greater than the first depth over a second area of the bed. Drainage is to a depth sufficient to expose the first area and leave depressions above the second area at least partially filled, plants in the depressions serving to re-inoculate the wetland upon reflooding.

A system to control nutrients, suspended algae, and filamentous algae in lakes, ponds, and estuaries includes a structure for containing macrophytic vegetation. One embodiment segregates a column of water within a body of water desired for remediation and shields the water column from sunlight sufficiently to kill phytoplankton therein, the lysis thereof releasing nutrients. The released nutrients are sequestered, and remediated water is replaced in the water column with water from the body of water. Floating or submerged macrophytes can be introduced in combination with shading and induced water movement to optimize nutrient uptake by the macrophytes. Water column shading may also be achieved by the macrophytes themselves, or by other means. The macrophytes can include floating aquatic plants, such as water hyacinths, submerged aquatic plants, and terrestrial or aquatic plants caused to float artificially. The invention also deals with toxic algae in a safe and sequestered way.

The invention relates to a mechanized submerged macrophyte planting device comprising a console, a mechanical arm connected with the console, a plurality of planters arranged at intervals and connecting pieces for connecting the plurality of planters; each planter comprises a columnar main part, a cone part located at the lower end of the columnar main part and at least one placing tray arranged in the columnar main part, an opening is formed in the side wall of the columnar main part, and the placing tray can enter and exit from the columnar main part through the opening; the planting devicefurther comprises lines for connecting the placing trays of all the planters in series, and the console is capable of applying a force to the lines, so that all the placing trays are pulled to outwards move through a gap; the cone part comprises a fixed part and a movable part; and the planting device further comprises connecting lines, one end of each connecting line is connected with the movablepart of the cone part of the corresponding planter, the other end of each connecting line is connected to the console, and the console is capable of applying a force to the connecting lines, so thateach movable part is pulled and opened.

A system and device for assisting in planting and growing floating macrophyte-type plant species in uses for the purification of water. The system comprises the use of three devices preferably formed from low-density plastic materials: a plane polygonal floating structure with elements for connecting to other floating structures, provided with at least one inner coupling bar connected to the contour of the floating structure or to another inner bar by a flexible arc; a plane cross-linked structure with elements for anchoring to the floating structure and at least one central circular housing; and a basket or cone consisting of a flexible plastic material and for receiving a macrophyte plant, a root cutting or rhizome with a troncoconical form.

The invention discloses a construction method of a foamed concrete vegetation nutrition enclosed cave. The construction method comprises the following steps that the position and the size of the enclosed cave are determined on a side slope; anchor nails are driven into a rock mass of the side slope from the periphery of the enclosed cave; a degradable fiber cushion layer is laid along the anchor nails to form a pocket-shaped structure; a first nutrient medium is sprayed and seeded into a configuration, and the spraying thickness is 6-10 cm; subarbor or arbor seedlings are transplanted into the configuration with soil balls; and a second nutrient medium containing seeds is sprayed and seeded into the configuration, so that the second nutrient medium covers the soil balls. A structure for bearing medium and large plants such as subarbor or arbor seedlings can be formed through rivets, the degradable fiber cushion layer and the first nutrient medium, the subarbor or arbor seedlings can be limited through the second nutrient medium, and both the first nutrient medium and the second nutrient medium can provide survival conditions for plants; and by means of the construction method, the enclosed cave can be formed in the side slope, the medium and large plants can be planted, and necessary growth conditions are created for landscape layering sense and biological diversity.

The disclosure provides an outdoor device for simulating a pond ecosystem comprising a plurality of simulated ponds connected together by pipelines and including an adjusting pool, a plurality of control groups and a plurality of treatment groups with different concentrations; the plurality of control groups and the treatment groups are randomly distributed in the ponds according to a random draw method or a random allocation method, and the adjusting pool is a transfer station for water inlets and outlets of the ponds. According to the device, the plurality of control groups and treatment groups are arranged in a system, achieving a scale of a middle-scale pond ecological simulation system, which can stimulate an actual complex hydrostatic ecological system including a plurality of aquatic macrophytes, algae, zooplankton, benthos and microorganisms, and evaluate the effects of the complex ecological efficiency caused by chemical pollutants entering an actual water body.

The invention discloses a comprehensive river channel management system. The comprehensive river management system includes slag-retaining grids, riverbed wetlands, river contact oxidation components, aquatic plant filter beds, aquatic plant fixing belts and aquatic plant purification belts; the two ends of the slag-retaining grids are used to erect on both sides of the river The river bank is used to intercept debris on the river surface. The river bed wetland is distributed on the river bank on both sides of the river channel. The channel contact oxidation component includes aeration and oxygenation components and biofilms. The aeration and oxygenation components are used for It is installed in the river channel for aeration and oxygenation, the biofilm is used for fixing in the river channel, the aquatic plant filter bed is used for setting at the mixed discharge outlet of the channel, the aquatic plant fixing belt and the The aquatic plant purification belt is used to be located in the river course. The comprehensive river course management system has a wide application range and low treatment cost.

The invention relates to an epidemic prevention method for macrophyte with mud on roots, which comprises the flowing steps: 1. perforate position is marked on a parcel bag which wraps the mud on the roots; 2. a plurality of openings are opened on the perforate position marked on the parcel bag; 3. holes are drilled on the roots of the macrophyte from every opening; 4. insecticide is injected into the holes of the macrophyte roots. The good technical effect is as follows: low cost, high efficiency, simple site; good insecticidal effect, no pollution to environment; simple operation and reducing damage to tree as well as labor intensity.