160 results about "Water transparency" patented technology

The invention discloses a three-dimensional ecological floating bed used for urban black and odorous riverway water quality improving and water purifying. The ecological floating bed structurally comprises a floating bed structure body, biological stuffing and biolith. The structure forming method includes the step that the three-dimensional ecological floating bed is formed in a river or lake which flows slowly or is still through simple assembly. The ecological floating bed is mainly used for removing N and P nutritive salt in an urban black and odorous riverway and other organic pollution loads in water, improving the water transparency and increasing dissolved oxygen. The three-dimensional ecological floating bed has the advantages that the concept of the aquatic plant-biological stuffing microorganism-biolith combined ecological floating bed is provided for the first time by a water quality improving and water purifying method of the three-dimensional efficient ecological floating bed, and ecological floating bed plants, biological stuffing contact oxidation and biolith microorganisms have a successive relation for treating a water body and effectively complete functional complementation; particularly in winter or other kinds of low-temperature weather, the biological stuffing and the biolith can effectively compensate vacancy of the aquatic plants in a withered state to continuously and efficiently purify the urban black and odorous water body heavily polluted and recover and reconstruct water ecology and water functions.

The invention discloses a three-dimensional ecological restoration method for a supereutrophic lake water body. The method comprises the following steps of: inserting a plurality of fixed piles into a hard layer at the bottom of a lake, transversely connecting the tops and middle parts of the fixed piles with steel cables to form an enclosure structure, connecting water-proof canvas serving as enclosure cloth with the fixed piles, and fixing the bottom end of the enclosure cloth and a gabion at the bottom of the lake after sewing to constitute an enclosure; transforming a substrate in the enclosure; partitioning the water surface into multiple layers according to water plants needing to be planted; transplanting the water plants; establishing an ecological floating island; performing biological alga control; and running an ecological enclosure system, maintaining and managing. By adopting the method, the water quality can be improved remarkably, the water transparency is enhanced remarkably, the nutrient salt content is lowered remarkably, and remarkable ecological benefit and landscape effect are achieved.

The invention discloses a small-sized closed horizontal circulating water channel device which is a closed flow circulating channel composed of sections. The top of a test section is open, a bent section of a medium guide section is provided with a medium guide corner rectifier, a bent section of a large guide section is provided with a large guide corner rectifier, and a '#'-shaped cellular rectifier and a net rectifier are arranged between the large guide section and a first contraction section sequentially. A small guide section is provided with a rotary shaft, and the rotary shaft is provided with a propeller at one end. By the structure, the closed horizontal circulating water channel has the advantages that a circulating pipeline flows stably; the water channel is suitable for observation of a flow field and observation of a test model; flow rate of a test section along a cross section is distributed evenly and the speed rate is controllable; speed of advection and speed of turbulence are controllable; and water transparency is high, and a fluid mechanics basic test, a ship maneuverability test, a large-sized algae cultivation method test, observation and shooting of a flowing pattern and the like can be performed.

The invention provides a mixotrophic-cultivation system in a freshwater pearl mussel pond, which comprises a pond, a separation device, a pearl mussel mixotrophic-cultivation region and an intensive fish cultivation region. The invention also provides a method for cultivating the pearl mussel by the mixotrophic-cultivation system. The mixotrophic-cultivation system and the method make full use of the nutrition relation among the mixotrophic-cultivation species, which reduces nutrition collecting volume; by regulating water quality and water transparency as well as regulating composition of species of phytoplankton and biomass, nutrient salt, phytoplankton and level of dissolved oxygen of the water can be effectively and conveniently controlled, which can effectively keep a good ecological environment of the water. The mixotrophic-cultivation system and method of the invention can obviously accelerate growth of the pearl mussel and increment speed of the pearl.

The invention discloses a method for realizing ecological aquaculture method by regulating the water quality of a high-yield aquaculture pond. The method integrates micropore oxygen increasing technology, a fish and vegetable co-existing technology and a water quality regulation micro-ecological agent using technology, so that the water quality of the high-yield aquaculture pond can be improved substantially, the water transparency can be improved, total ammonia nitrogen, nitrite nitrogen, total phosphorus and total nitrogen in water can be reduced, the pH of water can be stabilized, the density of blue algae, green algae and euglena which are harmful to aquaculture can be reduced obviously, diatom, dinoflagellate and cryptomonad which can serve as bait are not influenced obviously, an experimental pond is relatively stable in the aspect of zooplankton, accordingly, micro-ecological balance of the aquaculture water can be improved and stabilized, the yield can be increased, the earnings can be increased for a farmer, and the method can be widely applied to ecological breeding of various types of aquatic animals and plants.

The invention relates to a multi-channel efficient biological filler. The multi-channel efficient biological filler containing a multi-channel shape is prepared as follows: screening of an efficient dephosphorization denitrogenation bacteria strain, construction of a bacteria strain for efficient degradation of organic pollutants by genetic engineering, compounding of fly ash, silicate, clay, and incorporation of a hardening strength increasing admixture. The product is placed in river channels and lake and pool bottoms, or is used as a wetland substrate, fly ash, volcano rock and other materials in the product can absorb nitrogen and phosphorus, trace organic pollutants and other water bottom or pool bottom harmful substances, and supplement water trace elements, microorganisms in the product are capable of degrading the absorbed materials, removing water COD (chemical oxygen demand), ammonia nitrogen, total nitrogen, total phosphorus and turbidity, improving water pH, improving water transparency, and playing good effects on water quality purification of rivers, lakes, wetlands and other water bodies.

The invention provides a diagnosis and evaluation method for the water quality of an eutrophic shallow lake subjected to ecological restoration, which comprises the following steps of: selecting two factors, i.e. water transparency and chlorophyll a concentration which are important for water-quality improvement and stabilization in the ecological restoration process of the eutrophic shallow lake, comprehensively considering the interaction between the two factors, and establishing a water-quality diagnosis index-lake water quality index (LQI) of the eutrophic shallow lake subjected to the ecological restoration. The LQI can be used for quantitatively describing the conversion between the clean-water steady state and the muddy-water steady state of the eutrophic shallow lake so as to provide a visual and convenient diagnosis method for the water quality of the eutrophic shallow lake subjected to ecological restoration and also provide a scientific and reasonable reference basis for the drafting of management measures of the eutrophic shallow lake subjected to ecological restoration and the selection and the application of a subsequent ecological engineering method.

The invention relates to a compound bacterium enzyme preparation for improving water quality and further relates to a preparation method and application of the compound bacterium enzyme preparation. The compound bacterium enzyme preparation comprises the following components: bacillus subtilis, an alkaline protease, a neutral protease, an amylase, a saccharifying enzyme, glucose oxidase and carriers, wherein the bacillus subtilis belongs to one of products produced by liquid fermentation and solid fermentation; the alkaline protease and neutral protease belong to one of products produced by fermentation of bacillus subtilis and genetic engineering yeast; the amylase belongs to one of alpha amylase, beta amylase and gamma amylase; the saccharifying enzyme is selected from one of products produced by fermentation of aspergillus and genetic engineering yeast; and the glucose oxidase is selected from one of products produced by fermentation of aspergillus niger and blue mould. The compound bacterium enzyme preparation disclosed by the invention can achieve the effects of assisting decomposition of residual feeds, excrements and other organic matters in aquaculture ponds, improving the water quality and the substrate of the pond, reducing the content of ammonia nitrogen and nitrite in aquatic water and improving the water transparency.

Provided is a novel Taihu Lake bank planting ecological restoration technology. According to the novel Taihu Lake bank planting ecological restoration technology, soil and stone are used for conducting layered tamping, tube-sinking cast-in pile anchoring is conducted, and a trapezoid ecological bank is constructed; green flowers and plants for beautifying the environment are planted on the two sides of an ecological bank strip, the middle of the ecological bank is paved with stone blocks to form a walking gallery, emergent aquatic plants, floating-leaved plants and submerged plants are planted on the inner periphery and the outer periphery of the ecological bank, a beautiful scenery line is formed, soil and stone layered tamping is mainly adopted for the ecological bank, the ecological bank is constructed on the edge of the lake bank in a piling mode, green grass and trees for beautifying the environment are planted on the ecological bank and the two sides of the bank, and a structure and function complete ecological system is constructed. The novel Taihu Lake bank planting ecological restoration technology has the various advantages that the ecological feature, the water permeability, the impact resistance, the wave resistance and the like are good, the scouring of water flow to the lake bank is relieved, and the stability of the lake bank is also enhanced; meanwhile, by means of the various planted plants, wind waves are relived, the bottom mud is fixed and maintained, nutritional ingredients of nitrogen and phosphorus in a water body are absorbed, the water transparency is obviously improved, the function of water purification is achieved, and the original ecological scene of the water surface of the Taihu Lake is restored.

The invention discloses an intelligent urban central landscape park water treatment device and method. The water treatment device comprises a water suction pump, a pretreatment pond and a treatment tank, wherein the pretreatment pond comprises a sedimentation basin and a disinfecting tank, a baffling pipe is arranged in the sedimentation basin, a stirring device and an ultrasonic sterilizer are arranged in the disinfecting tank, an oxygen aeration area and a detection area are arranged in the treatment tank, and a hydraulic drop plate and an absorbing layer are arranged in the oxygen aeration area. The sewage treatment method comprises the following steps of sewage suction, sedimentation treatment, disinfection treatment, oxygen aeration treatment and water quality detection. According to the sewage treatment method, sewage can be sedimented by the sedimentation basin, then disinfected by the disinfecting tank and finally treated by the oxygen aeration area. Thus, the oxygen content in water is improved, and the water transparency is improved. The treated water needs to be detected by a water quality detection box before being drained and can be drained only after qualified detection is achieved. The water treatment device is simpler and more convenient to use and improves the comprehensive utilization rate.

The invention discloses an aquaculture water-break bypass treatment and ecological repairing circulation treatment method. A system comprises an aeration oxidation pond, artificial floating islands, aflocculation precipitation pond, a multi-stage surface flow and subsurface wetland which are sequentially connected. By using a pretreatment technique of the aeration oxidation pond and the flocculation precipitation pond, pollutants and total phosphorus in wastewater can be efficiently removed; due to adoption of plants, benthonic animals and microorganisms in the multi-stage surface flow and subsurface wetland, the water environment and the water transparency can be remarkably improved, and a water body can be earth surface type-V water. A purified water body is circulated in the wetland toform a landscape water body. When water is taken from an aquaculture pond as seasonal water, the water is recycled into the aquaculture pond, then aquaculture recycling and reuse can be achieved, a circulation ecological breeding system in the pond can be formed, and the city water body environment can be improved; in case of ecological water shortage, the water can be used as a city sponge waterbody which is returned to rivers.

The invention provides an ecological method for breeding young shrimps of litopenaeus vannamei in outdoor water. The method is characterized in that an indoor cement floor is changed into an outdoor cement floor, wherein the inoculation density of algae is controlled to be 5000-8000cell/ml; the inoculation time is controlled to the time before nauplii begin to be changed into zoea under the inoculation density; the synchronization between growth and propagation of the algae and requirements of an ecological system on the density of the algae is ensured; an inoculation density of rotifers is 5-10 /ml, and the inoculation time is the time before the nauplii begin to be changed into the zoea, thereby ensuring that the growth and propagation of the rotifers are e synchronous with the requirements of the young shrimps; the inoculation time of artemia is acanthosoma; the water transparency is retained at 80-120cm; the artemia has the effect of purifying the water; the content of ammonia nitrogen in the overall water is smaller than 0.2, and the content of nitrite is smaller than 0.02; the food intake of the young shrimps and the rotifers are not affected. Through the balance control on a young shrimp rearing water ecological system in the whole production process, the young shrimps take endogenous high-quality natural baits as the major food all the time; the cultured young shrimps of the litopenaeus vannamei are excellent in nutrition, healthy and high in quality.

The invention discloses an Attapulgite algicide, wherein the Attapulgite algicide comprises active Attapulgite clay, copper sulfate, ferrous sulfate and trichloroiminocyanuric acid. When the Attapulgite algicide is thrown into water for algae removal, the algicide can be rapidly adsorbed onto the exterior layer of the algae, the algae will die of the loss of growth conditions. As a result, the water mass can become clean within short period of time, and the water transparency can be improved.

A method for purifying biological deposition bed water quality is carried out by making deposition bed frame, treating zeolite, making zeolite bed, regulating zeolite depth under water, planting deposit plant, fixing zeolite bed, and regulating zeolite to keep deposit plant growth and water landscape. It's cheap and simple, and can improve polluted water quality and water transparency.

The present invention discloses early warning method for disease incidence in artificial aquiculturing of yellow croaker. The early warning method includes measuring water transparency X1 and temperature X2 at 1-3 pm; measuring the daily average wind strength X3; calculating Y1=1.546X1+0.07X2X3-11.922, Y2=1.284X1+0.072X2X3-10.067, Y3=1.568X1+0.108X2X3-16.921 and Y4=1.981X1+0.076X2X3-17.062; comparing Y1, Y2, Y3 and Y4, and selecting the maximum to predict the disease incidence probability in the third day based on preset criterion. The present invention makes it possible to prevent and treat diseases of yellow croaker timely and effectively.

The invention discloses a food chain reconstruction method for lake water ecological management. The invention utilizes original food web breaking, new food web construction, and food web maintenance and management to establish a reasonable pyramid energy transfer mode; and reduces the stock and proportion of original small and omnivorous fish by driving, fishing, and stocking of large carnivorous fish for predation. The method avoids water turbidity caused by agitation of excessive bottom agitating and water agitating fish and difficult sedimentation, low water transparency, insufficient illumination needed by plants, and plant growth inhibition or even death, and kills harmful pathogens and larvae able to cause illness of submerged plants and fish in wate and sediment. The method provided by the invention has stable and lasting effects, assists construction of a submerged plant system, improves lake's recovery of self-adjustment ability, and beautifies the environment.

The invention provides a method for purifying water quality by utilizing the species diversity of submerged plants. The method comprises the following steps: (1) selecting the species of submerged plants which are common in fresh water lakes and rivers and can be symbiotic and can be subjected to asexual propagation through the internodes, constructing submerged plant communities comprising one, two, three and four species respectively and having different species diversity levels; (2) putting the constructed communities into sewage; (3) after 30-50 days, taking the water samples in a container to measure the water quality indexes, determining the best species diversity level for purification of the water quality and the optimal species combination under the diversity level. According to the method provided by the invention, the total nitrogen content of the water body can be effectively reduced, the water transparency of the water body can be improved, and algal bloom can be inhibited, the ecological and service functions of the wetland can be effectively restored and protected, and a scientific theoretical basis can be provided for ecological restoration of the degraded lake wetland.

The invention discloses a wetland ecosystem restoration method which comprises the following steps: firstly carrying out sectional water pumping dredging on a water area of an object wetland, storingthe pumped wetland water body into an anaerobic tank, and carrying out impurity removal, soaking, aeration, precipitation and separation on the cleaned sludge to obtain active sludge and deposited sludge; drying the deposited sludge until the water content does not exceed 5%, crushing, adding EM bacterial powder, ammonia oxidizing bacteria powder, bacillus subtilis powder, a probiological growth promoter and volcanic mud, and uniformly mixing to obtain bacterial mud; putting the activated sludge into a wetland water body, and carrying out intermittent aeration; backfilling bacterial sludge tothe water area section subjected to water pumping and desilting, planting submerged plants on the bacterial sludge, arranging a microorganism substratum on the bacterial sludge, and pouring the wetland water body back to the water area section; and arranging an ecological floating bed in the water area section, and putting benthonic animals, fishes and shrimps put into the ecological floating bed.The water transparency can be rapidly improved, a complete aquatic animal ecological chain and microbial communities are constructed, wetland pollutant reduction is promoted, and the water quality isimproved.

The invention relates to a composite type magnetic trap flocculant which is obtained by mixing modified iron-containing slag with organic polymer PDMDAAC solution having bridging absorption function.The invention also provides a method for clearing algaltufa by using flocculant, in which the composite type magnetic trap flocculant is thrown into an algae-containing solution, a micronano mesh structure formed by PDMDAAC and modified slag strong self-flocculation performance are utilized to combine with algae cells, nitrogen, phosphorus and other colloidal particles in water to form floccules,and then external magnetic field rotation is utilized to remove the floccules out of water. The method is simple in preparation technique and convenient in operation. The invention can be used for fast absorbing and inmeshing harmful substances in water, can improve water transparency, maintain water quality to be stable and balance acid and base. The invention can fast gather algae cells under the action of external magnetic field, thus solving the problem of salvage after removing algaltufa, and eradicating possible occurrence of secondary pollution. In the invention, the flocculant can be recycled, and the application cost is remarkably reduced.

The invention discloses a submerged plant and ecological floating bed combined crab culture method. According to the method, deep water gutters are formed in the bottom of a pond, submerged plants are planted in deep water areas, plant floating beds are laid on water surfaces of shallow water areas, the ecological floating beds and the submerged plants are distributed in a spaced manner, and photosynthesis of plants planted on the floating beds and respiration of the submerged plants are combined, so that in the long run, the method has a good effect on water transparency and culture pond in-situ ecological restoration; in addition, a water area of the pond is divided into a plurality of deep water areas and shallow water areas, which are alternately distributed, through the deep gutters, when the transparency of water is lowered due to pollution, the shallow water areas are used for providing a water-surface-close new shelling environment for crabs, thus, the survival rate of the crabs is increased, and the crab yield of a unit area is increased.

The invention discloses a submerged plant light supplementing device, and belongs to the field of environment and ecology environmental protection. The light supplementing device comprises a support, a plurality of light guiding pipes and a floating cylinder, wherein the support is in a mesh shape and provided with insertion holes in meshes; the light guiding pipes are inserted into the insertion holes of the support; the floating cylinder is arranged at the lower end of the support so that the support can enable the multiple light guiding pipes to float on the water surface so as to supplement light to plants below the water surface. The light supplementing device is simple in structure, can be flexibly used according to the water area and can effectively improve underwater light illumination in lakes and rivers with large water depth and low water transparency, and therefore submerged large-area aquatic plant growth can be promoted, and water quality improvement and water ecosystem balance recovery are achieved.

The invention discloses a method for cage cultivation of myriophyllum spicatum and belongs to the fields of water environmental protection and water ecological reconstruction. The myriophyllum spicatum is planted in a suspension cage and light requirements in water can be met through adjustment of suspension depth. The suspension cage comprises floating bodies and a cage which are connected through ropes. The method includes the steps: arranging the suspension cage in a water body with water depth exceeding 1.5 meters; inoculating the myriophyllum spicatum starting from March each year; breeding plagiognathops microlepis or silver todarades in the cage; monthly measuring change of water transparency from April to October each year and adjusting the suspension depth according to the water transparency; harvesting the myriophyllum spicatum during October and November each year. By the method, the myriophyllum spicatum can fixedly grow on a bottom substrate of the cage, the myriophyllum spicatum can be prevented from being chewed and eaten by herbivorous fishes, infringement of stormy waves upon plants can be resisted, and an introducing problem of the myriophyllum spicatum is solved.

The invention provides a biomembrane reinforced landscape water body self-purification method and the device, belonging to the technical field of water treatment, which is characterized in that a box biomembrane self-purification landscape water body device formed by a plurality of serial swing plate typed fillers and combined fillers is arranged in channels or landscape water body, and then is enclosed with the plastic membranes, forming an independent little water body without water body changing, a mixed-agent of comamonas testosterone A3 and pseudomonas putida is added, and the dose of the mixed-agent is 2 to 5g, the wet weight is /m<3>; after three or five days, the plastic membranes are moved, and when a biomembrane is formed on the filler, the epistrate feeders and zoobenthos are thrown in the device. The invention has the advantages of improving the adhesive animals luxuriantly growth and suspension-feeding with picoplankton through the biomembrane reinforced landscape water body self-purification, reducing the quantity of planktons, increasing the water transparency[s4], and having wide potential application.

The invention belongs to the technical field of environment engineering and particularly relates to a planting method of plateau shallow lake submerged plants. The method includes: selecting submerged plants more than 1.5m in height; preparing a single planting bodies, building a water planting strip, selecting bamboo poles 5-10cm in diameter to manufacture bamboo poles of the same height of 3-3.5cm, and using the bamboo poles for piling; tying the thin nylon ropes of each single planting body to the thick rope between two piles, slowly placing the single planting body in water for planting, allowing the distance between every two single planting bodies to be 25-40cm, and allowing the plants to float on water after planting; planting management. By the method, vegetation coverage of plateau shallow lakes rich in nutrition, and by large-scale planting, water can be improved, water transparency can be increased, and blue-green algae outbreak can be inhibited.