Method for efficiently treating peculiar smell substances in water body of aquatic bird inhabiting water area in wild animal park

Abstract

The invention provides a method for efficiently treating peculiar smell substances in a water body of an aquatic bird inhabiting water area in a wild animal park, and belongs to the technical field of water treatment deodorization. The method comprises stock processing and shift processing. Wherein the stock treatment method comprises the following steps: in bird pond treatment, a wave cracking nano mesoporous material is spread to improve a bottom mud habitat, meanwhile, a wooden tray is used as a basis, a bagged adsorption material is bound, and a nano biological reaction field is constructed. The displacement treatment method comprises the following steps: constructing an ecological diversion canal near a water area for inhabiting aquatic birds, constructing an artificial wetland by taking a wave splitting nano mesoporous material as a matrix in the ecological diversion canal and assisting with emergent aquatic plants, degrading peculiar smell substances and improving water quality, and then returning to the main bird pool. The method disclosed by the invention has the capabilities of keeping stable and long-acting peculiar smell removal and improving water quality.

Description

TECHNICAL FIELD

[0001] The present application belongs to the technical field of water treatment and deodorization, and particularly relates to a method for efficiently treating odor substances in water bodies of wild zoo water-dwelling birds. BACKGROUND

[0002] Birds include all sources of animal feces odor. During the digestion process, food is acted on by the in vivo digestive flora to produce a certain amount of CO2 and methane. Methane and CO2 are not the main causes of odor. The main components of feces are food residues, which generally contain proteins. The proteins are acted on by the in vivo digestive flora to produce a large amount of skatole, sulfides and amines, which have a foul odor and are mixed with food residues, dissolved in water or diffused in the air. With the arrival of high-temperature weather in summer, the animal feces pollution in wild zoos is more serious. The foul odor produced in the feces metabolism not only pollutes the environment, but also seriously affects the health and mood of tourists. In particular, due to the body structure of swans and pelicans, the feces have high water content and contain many harmful microorganisms, making it more difficult to treat the water bodies where they live. The general water treatment technology has a certain effect on improving ordinary water quality, but it is difficult to treat the water bodies where birds live because the birds have a large destructive effect on aquatic plants. At the same time, blue-green algae not only causes visual pollution, but also is an important odor-causing culprit. Many blue-green algae species directly produce and release geosmin and 2-methylisoborneol during the metabolism process. These two substances are the main sources of earthy and moldy odors in water bodies, and their olfactory thresholds are extremely low. Even at a concentration of nanograms, they can be detected by the human body. Blue-green algae blooms will die and sink to the bottom in large quantities. The decomposition process of the remains is an oxygen-consuming process, which will quickly consume the dissolved oxygen at the bottom of the water body, forming an anaerobic environment. Under the anaerobic environment, anaerobic bacteria will multiply and decompose organic matter in the water body and the bottom mud, producing hydrogen sulfide, ammonia, amines and other substances with strong foul odor. For treatment technologies that rely too much on aquatic plants, it is difficult to achieve, especially the odor in the water body. Due to the limitations of the technology itself, the treatment effect is not good. Some deodorization technologies through equipment are also not conducive to widespread promotion due to many unfavorable factors such as effect, cost and operation and maintenance. SUMMARY

[0003] Therefore, the present application aims to provide a method for efficiently treating odor substances in water bodies of wild zoo water-dwelling birds. The treatment method of the present application has no impact on the original ecology, can improve the feces metabolism rate of water-dwelling birds, balance the micro-ecology, reduce the content of microplastics and the density of blue-green algae, has a significant inhibitory effect on harmful microorganisms such as Escherichia coli, and greatly reduces the odor.

[0004] In order to achieve the above-mentioned purpose, the present application provides the following technical solutions:

[0005] The application provides a method for efficiently treating odor substances in water of a water habitat of wild zoo aquatic birds, including stock treatment and displacement treatment.

[0006] The method of the stock treatment is that the wave-cracking nanometer mesoporous material is spread on a riverbed of a bird pool to modify a sediment habitat, wooden trays and bagged adsorption materials are prepared, the bagged adsorption materials are fixed on the wooden trays, and then the wooden trays are put into the riverbed.

[0007] The method of the displacement treatment is that an ecological diversion channel is built near the water habitat of the aquatic birds, and an artificial wetland is constructed in the ecological diversion channel.

[0008] The starting section of the ecological diversion channel is designed as a slope, a first ecological permeable dam is arranged at the end of the slope surface of the ecological diversion channel, a second ecological permeable dam is arranged at the end of the ecological diversion channel, and the water of the bird pool is returned into the bird pool after being filtered and biochemically treated through the ecological diversion channel.

[0009] The bagged adsorption material includes wave-cracking nanometer mesoporous material, full-biomass fiber sponge and phosphorus passivator.

[0010] Each bag of the bagged adsorption material contains 12.5 kg of the material, and five bags are placed on each wooden tray, and the wooden trays are placed at intervals of 3-5 m.

[0011] The first ecological permeable dam and the second ecological permeable dam each include a fixing device and bagged adsorption materials placed in the fixing device.

[0012] The method for constructing the artificial wetland is that the wave-cracking nanometer mesoporous material is spread on the bottom of the ecological diversion channel as a substrate, after the spreading is completed, emergent plants are transplanted, and the artificial wetland is constructed.

[0013] The emergent plants include but are not limited to calla, lotus or canna.

[0014] In the application, the front end of the ecological diversion channel is designed as a slope, a certain drop is maintained, and the water flow power is increased; an ecological permeable dam is built behind the slope, the filler is the wave-cracking nanometer mesoporous material, which is used for filtering and adsorbing odor substances and pollution factors in the water, and an ecological permeable dam is also built at the end of the ecological diversion channel, which is used for strengthening the water quality of the backwater.

[0015] Preferably, the mass ratio of the wave-cracking nanometer mesoporous material, the full-biomass fiber sponge and the phosphorus passivator in the bagged adsorption material is 5:4:1.

[0016] Preferably, the wave-cracking nanometer mesoporous material is a porous water-containing framework aluminosilicate mineral. In the application, the nanometer biological reaction field is constructed by using the green plant root system and the wave-cracking nanometer mesoporous material, the regenerative capacity of the wave-cracking nanometer mesoporous material is accelerated, and the efficient treatment capacity of the wave-cracking nanometer mesoporous material is maintained.

[0017] The porous aqueous framework aluminosilicate mineral in the application is a new high-tech sewage treatment material processed by a non-standard wave cracking machine for hemp fibers or natural minerals in Chinese Patent No. ZL2019202809663, and its principle is: using wave energy to convert into mechanical energy to generate shock waves, and thus generating mechanical effect, cavitation effect and free radical effect to deeply process the natural minerals, dredge their 2-50nm natural crystal-like pore channels, increase their specific surface area, restore their "micro-reactor" function, utilize the basic properties of nanoscale materials such as quantum small size effect, surface interface effect and macroscopic quantum tunnel effect to enhance their selective adsorption capacity and catalytic action, and then prepare the nanoscale silicon series mesoporous materials through a series of processes such as de-anion and high-temperature drying.

[0018] As preferred, the preparation method of the full-biomass fiber sponge is:

[0019] Mix NaOH, urea and deionized water; then place in a low-temperature environment of-15℃, continuously stir to make it fully dissolved and uniformly cooled to obtain solution A;

[0020] Add cotton linters to solution A, keep the low temperature of-15℃, and mechanically stir at a speed of 1000rpm for 10 minutes to obtain solution B;

[0021] Centrifuge solution B for 15 minutes, inject the supernatant into a wet spinning device, extrude the solution into a 10% hydrochloric acid coagulation bath through a spinneret, stand for 2 hours, take out the formed sponge body from the coagulation bath, and wash to neutral, then dry to obtain full-biomass fiber sponge with a diameter of 0.3mm.

[0022] As preferred, the mass ratio of NaOH, urea, deionized water and cotton linters is 5:10:75:5.

[0023] The core ability of the full-biomass fiber sponge in the application to remove microplastics is derived from its unique physical and chemical structure: in the coagulation forming process, cellulose molecules self-assemble to form a three-dimensional network with interconnected pores of micrometer and nanometer levels, which can directly intercept and capture microplastic particles in water through size exclusion effect; the cellulose molecular chain is rich in a large number of hydroxyl groups (-OH). These functional groups can produce strong adsorption with the surface of various types of microplastic particles through hydrogen bonds, van der Waals forces and electrostatic interactions; the cellulose skeleton has stable chemical properties, and after adsorption saturation, microplastics can be desorbed by simple physical methods to regenerate the sponge

[0024] Preferably, the phosphorus passivating agent is lanthanum-modified bentonite. Lanthanum rare earth elements are loaded onto a carrier such as bentonite. Lanthanum ions have a very strong affinity for phosphate, forming lanthanum phosphate (LaPO4) precipitate with extremely low solubility. Its Ksp (solubility product constant) is much lower than that of aluminum phosphate and iron phosphate, thus effectively fixing phosphorus even at very low concentrations. When the lanthanide passivating agent is added to water or comes into contact with sediment, lanthanum ions on the material surface are released and undergo an instantaneous, irreversible precipitation reaction with free phosphate ions diffused from the water or sediment interstitial water. The resulting lanthanum phosphate exists in extremely small crystal form and is fixed on the surface and within the internal pores of the passivating agent particles.

[0025] Lanthanide passivating agents are incorporated into the artificial wetland substrate of the ecological water diversion channel. Even if the water from the main bird pond contains a high concentration of phosphorus, it can be quickly fixed when flowing through the wetland, ensuring that the water returning to the main bird pond is in a low-phosphorus state, thereby continuously suppressing the risk of algal blooms in the main water body.

[0026] Preferably, the water in the habitat of the aquatic birds is pumped to an ecological water diversion canal by a booster pump.

[0027] Preferably, the fixing facility is a wooden grille or a wood-look railing.

[0028] Preferably, the aquatic birds include, but are not limited to, swans and pelicans.

[0029] It contains at least the following beneficial technical effects:

[0030] 1. The process design of this invention is eco-friendly. It diverts water to a different location for treatment, which more effectively removes odor substances, while increasing water flow and oxygen content, thus effectively maintaining water quality stability and reducing treatment costs.

[0031] 2. The method of the present invention can increase the metabolic rate of bird droppings in the habitat of aquatic birds, balance the micro-ecology, have a significant inhibitory effect on harmful microorganisms such as Escherichia coli, and greatly reduce odor.

[0032] 3. In this invention, aquatic plants are kept away from birds, thus separating the grass from the birds and effectively ensuring that the aquatic plants are not damaged by birds.

[0033] 4. This invention fully utilizes the root system of aquatic plants and wave-breaking nanoporous materials to construct a nano-bioreactor field, promoting the regeneration of wave-breaking nanoporous materials and keeping them in an unsaturated adsorption state. This enhances the energy efficiency of wave-breaking nanoporous materials. The artificial wetland and wave-breaking nanoporous materials jointly construct a nano-bioreactor field, accelerating their regeneration capacity and keeping the wave-breaking nanoporous materials in a highly efficient state, maintaining a stable and long-lasting ability to remove odors and improve water quality.

[0034] 5. This invention also adsorbs microplastics in water bodies through the action of adsorption materials; at the same time, the phosphorus passivating agent further inhibits the production of cyanobacteria. Combined with wave-breaking nanoporous materials, it can comprehensively reduce water pollution and improve the quality of water bodies. Attached Figure Description

[0035] Figure 1 Diagram showing the relationship between the bagged absorbent material and the wooden tray;

[0036] Figure 2 Side view of an ecological permeable dam;

[0037] Figure 3 This is an aerial view of an ecological permeable dam. Detailed Implementation

[0038] Various exemplary embodiments of the present invention will now be described in detail. This detailed description should not be considered as a limitation of the present invention, but rather as a more detailed description of certain aspects, features, and embodiments of the present invention.

[0039] It should be understood that the terminology used in this invention is merely for describing particular embodiments and is not intended to limit the invention. Furthermore, with respect to numerical ranges in this invention, it should be understood that each intermediate value between the upper and lower limits of the range is also specifically disclosed. Every smaller range between any stated value or intermediate value within a stated range, and any other stated value or intermediate value within said range, is also included in this invention. The upper and lower limits of these smaller ranges may be independently included or excluded from the range.

[0040] Unless otherwise stated, all technical and scientific terms used herein have the same meaning as commonly understood by one of ordinary skill in the art. While only preferred methods and materials have been described herein, any methods and materials similar or equivalent to those described herein may be used in the implementation or testing of this invention. All references to this specification are incorporated by way of citation to disclose and describe methods and / or materials associated with those references. In the event of any conflict with any incorporated reference, the content of this specification shall prevail.

[0041] Various modifications and variations can be made to the specific embodiments described in this specification without departing from the scope or spirit of the invention, as will be apparent to those skilled in the art. Other embodiments derived from this specification will also be obvious to those skilled in the art. This application specification and embodiments are merely exemplary.

[0042] The terms “include,” “including,” “have,” “contain,” etc., used in this article are all open-ended terms, meaning that they include but are not limited to.

[0043] In the following embodiments, the wave-pyrolysis nanoporous material is composed of silicon-oxygen tetrahedra and aluminum-oxygen tetrahedra composed of Si, Al, and O. The silicon-oxygen tetrahedra and aluminum-oxygen tetrahedra form a three-dimensional spatial framework structure. It is a high-tech new wastewater treatment material obtained by non-standard wave-pyrolysis processing of hemp fiber or natural minerals, according to Chinese Patent No. ZL2019202809663. Its principle is to use wave energy to convert into mechanical energy to generate shock waves. The resulting mechanical effect, cavitation effect, and free radical effect are used to deeply process natural minerals, clear their 2-50NM natural crystalline pores, increase their specific surface area, restore their "micro-reactor" function, and enhance their selective adsorption capacity and catalytic effect by utilizing the basic characteristics of nanoscale materials such as quantum small size effect, surface interface effect, and macroscopic quantum tunneling effect. The nanoscale silicon-based mesoporous material is prepared by a series of processes such as deionization and high-temperature drying.

[0044] The main mechanism involves the adsorption of NH4 by wave-breaking nanoporous materials. + The nitration and denitration reactions are achieved through ion exchange, and their equations are as follows:

[0045] NH4 + -N+O2→NO2-N

[0046] NH4 + NO₂ → N₂ + 2H₂O

[0047] The main component of skatole is methylindole, which acts as an electron donor through adsorption and ion exchange via wave-cleavage nanoporous materials. The equation for its role as an electron donor is as follows:

[0048] +CH3→CO2+H2O

[0049] Its effect on hydrogen sulfide is also achieved through its nanoscale porous structure and surface active sites, which exhibit a high adsorption capacity for polar molecules such as hydrogen sulfide, thereby enabling its effective removal.

[0050] The preparation method of all-biomass fiber sponge is as follows:

[0051] Mix NaOH, urea, and deionized water; then place in a low-temperature environment of -15℃, stir continuously to ensure complete dissolution, and cool to obtain solution A;

[0052] Add cotton linters to solution A, maintain a low temperature of -15℃, and mechanically stir at a high speed of 1000 rpm for 10 minutes to obtain solution B; the mass ratio of NaOH, urea, deionized water and cotton linters is 5:10:75:5.

[0053] Centrifuge solution B for 15 minutes, inject the supernatant into a wet spinning device, and squeeze the solution into a 10% hydrochloric acid coagulation bath through the spinneret. Let it stand for 2 hours, remove the formed sponge from the coagulation bath, wash it until neutral, and then dry it to obtain a whole biomass fiber sponge with a diameter of 0.3 mm.

[0054] The phosphorus passivating agent is a lanthanide-modified passivating agent.

[0055] Example

[0056] This embodiment provides a method for efficiently treating odorous substances in the water bodies of habitats for aquatic birds in wildlife parks. The steps are as follows:

[0057] Existing stock treatment: Spread wave-splitting nanoporous material on the riverbed of Bird Pond, and prepare wooden pallets and bagged adsorbent material (12.5 kg per bag). Tie the bagged adsorbent material (wave-splitting nanoporous material, whole biomass fiber sponge, and phosphorus passivating agent in a mass ratio of 5:4:1) onto the wooden pallets, and then place the wooden pallets on the riverbed at intervals of 3 to 5 meters.

[0058] Relocation and Treatment: A relatively open area near the bird pond, with ample sunlight, convenient power connection, easy water return, and no impact on visitor safety, will be selected to dig an ecological water diversion channel. The initial section of the ecological water diversion channel will be constructed as a slope. At the end of the slope, a grid consisting of fixed wooden stakes and imitation wood railings will be installed, with bagged absorbent material (12.5 kg per bag) placed inside to form an ecological permeable dam. Another such ecological permeable dam will be constructed at the end of the ecological water diversion channel. Then, wave-pyrolysis nanoporous material will be spread at the bottom of the ecological water diversion channel. After spreading, *Thalia dealbata*, lotus, or canna lilies will be transplanted to construct an artificial wetland. Water from the aquatic bird habitat will be pumped to the ecological water diversion channel, treated by the channel, and then returned to the aquatic bird habitat.

[0059] Experimental Example 1

[0060] The water in the river section from the gibbon enclosure to the crocodile enclosure in Shanghai Wild Animal Park was treated using the methods described above. The water was tested before and after treatment, and the results are shown in Table 1.

[0061] Table 1

[0062]

[0063] This ecological treatment method, through the combined use of wave-breaking nanoporous materials, all-biomass fiber sponges, and phosphorus passivators, has achieved remarkable results in the comprehensive treatment of bird waters in wildlife parks: the removal rate of ammonia nitrogen, the core odor-causing substance, reached 82.9%, the removal rate of total phosphorus reached 86%, the microplastic content decreased by 90.7%, while dissolved oxygen increased by 30% and transparency doubled, effectively eliminating water odors, inhibiting algae growth, and comprehensively improving water quality.

[0064] Experimental Example 2

[0065] Blue-green algae detection experiment

[0066] The experiment was conducted in the system constructed in the example, with an experimental period of 30 days (covering a typical growth cycle of cyanobacteria). Sampling frequency: Day 1 (D1), Day 7 (D7), Day 15 (D15), and Day 30 (D30) of the experiment. The results are shown in Table 2.

[0067] Table 2

[0068]

[0069] As shown in the table above, after 30 days of continuous treatment, the density of cyanobacteria in the effluent of the experimental group decreased by 87.6%, indicating that the treatment was extremely effective in inhibiting the growth and reproduction of cyanobacteria. At the same time, the dominant position of cyanobacteria in the total phytoplankton community significantly decreased, and the community structure tended to be healthier.

[0070] The ecological process method provided by this invention not only efficiently removes odor-causing substances from water bodies, but also achieves efficient and long-term ecological control of cyanobacterial blooms through a multi-synergistic mechanism of "phosphorus control and nitrogen interception, ecological oxygenation, and adsorption purification," comprehensively improving the water quality and ecological environment of aquatic bird habitats. By controlling cyanobacteria, secondary pollution and severe hypoxia caused by large-scale algal death and decomposition are avoided at the source, maintaining the aerobic state of the water body and thus inhibiting the initiation of anaerobic odor-causing processes. The removal of plastic particles themselves reduces the total amount and activity of odor-causing microorganisms in the water body, cutting off a potential pathway for odor transmission through microplastics.

[0071] The above description is merely a preferred embodiment of this application and is not intended to limit this application. Various modifications and variations can be made to this application by those skilled in the art. Any modifications, equivalent substitutions, improvements, etc., made within the spirit and principles of this application should be included within the protection scope of this application.

Claims

1. A method for efficiently treating odorous substances in the water bodies of aquatic bird habitats in wildlife parks, characterized in that, This includes both existing data processing and data shifting. The method for treating the existing stock is as follows: spread wave-degrading nanoporous material on the riverbed of Bird Pond to improve the bottom sediment habitat, and at the same time prepare wooden trays and bagged adsorbent material, tie the bagged adsorbent material to the wooden trays, and then put the wooden trays on the riverbed. The relocation treatment method is as follows: construct an ecological water diversion channel near the habitat of aquatic birds, and build an artificial wetland in the ecological water diversion channel; The starting section of the ecological water diversion channel is set as a slope; a first ecological permeable dam is set at the end of the slope of the ecological water diversion channel; a second ecological permeable dam is set at the end of the ecological water diversion channel, and the water in the bird pond is filtered and biochemically treated through the ecological water diversion channel and then flows back into the bird pond. The bagged adsorbent material includes wave-breaking nanoporous material, all-biomass fiber sponge, and phosphorus passivator; Each bag of the adsorbent material weighs 12.5 kg, with 5 bags placed on each wooden pallet, and the wooden pallets spaced 3-5 meters apart. Both the first and second ecological permeable dams include fixed facilities and bagged absorbent material placed in the fixed facilities; The artificial wetland construction method is as follows: a wave-degradable nanoporous material is spread at the bottom of an ecological water diversion channel as a matrix, and after spreading, emergent plants are transplanted to construct an artificial wetland. The emergent plants include, but are not limited to, Thalia dealbata, lotus, or canna lily.

2. The method according to claim 1, characterized in that, The mass ratio of wave-degrading nanoporous material, all-biomass fiber sponge, and phosphorus passivator in the bagged adsorbent material is 5:4:

1.

3. The method according to claim 2, characterized in that, The wave-breaking nanoporous material is a porous, hydrous framework aluminosilicate mineral.

4. The method according to claim 2, characterized in that, The preparation method of the all-biomass fiber sponge is as follows: Mix NaOH, urea, and deionized water; then place in a low-temperature environment of -15℃, stir continuously to ensure complete dissolution, and cool to obtain solution A; Add cotton linters to solution A, keep at a low temperature of -15°C, and mechanically stir at a high speed of 1000 rpm for 10 minutes to obtain solution B; Centrifuge solution B for 15 minutes, inject the supernatant into a wet spinning device, and squeeze the solution into a 10% hydrochloric acid coagulation bath through the spinneret. Let it stand for 2 hours, remove the formed sponge from the coagulation bath, wash it until neutral, and then dry it to obtain a whole biomass fiber sponge with a diameter of 0.3 mm.

5. The method according to claim 4, characterized in that, The mass ratio of NaOH, urea, deionized water, and cotton linters is 5:10:75:

5.

6. The method according to claim 2, characterized in that, The phosphorus passivating agent is lanthanum-modified bentonite.

7. The method according to claim 1, characterized in that, The water in the habitat of aquatic birds is pumped to an ecological water diversion canal via a booster pump.

8. The method according to claim 1, characterized in that, The fixed facility is a wooden grille or an imitation wood railing.

9. The method according to claim 1, characterized in that, The aquatic birds mentioned include, but are not limited to, swans and pelicans.

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