Device for treating microalgae in lakes and rivers by coupling aerobic microorganisms with Fenton

Abstract

The utility model relates to the field of environmental protection, in particular to a device for treating microalgae in lakes and rivers by coupling aerobic microorganisms with Fenton, which comprises an artificial sea grass system arranged in the lakes and rivers, an aeration device positioned below the artificial sea grass system and a Fenton oxidation system positioned above the liquid level of the lakes and rivers, the artificial sea grass system provides an attachment carrier for aerobic microorganisms in the water body, the aeration device provides oxygen for the aerobic microorganisms attached to the artificial sea grass system, and the Fenton oxidation system sprays a Fenton reagent to the water body; the artificial sea grass system provides an attachment carrier for aerobic microorganisms in a water body, and the aeration device provides oxygen supply for the aerobic microorganisms attached to the artificial sea grass system, so that a relatively good treatment effect on low-concentration COD (Chemical Oxygen Demand) and biochemically degradable wastewater is achieved; the Fenton oxidation system can simultaneously oxidize COD (Chemical Oxygen Demand) which is difficult to degrade in lakes and rivers, and meanwhile, generated iron floccules also have an excellent treatment effect on microalgae in the lakes and rivers.

Description

Technical Field

[0001] This utility model relates to the field of environmental protection, specifically to a device for treating microalgae in lakes and rivers by coupling aerobic microorganisms with Fenton. Background Technology

[0002] Eutrophication refers to the excessive influx of nutrients such as nitrogen, phosphorus, and potassium into water bodies, leading to nutrient overload, the proliferation of algae and other aquatic animals, and ultimately disrupting the balance of the aquatic environment. How to quickly and efficiently treat algae in water bodies is a major challenge currently facing my country.

[0003] Currently, most in-situ lake microalgae purification technologies based on ships and floating carriers combine multiple treatment techniques, such as ultrasound-ozone and hydraulic cavitation-chlorine dioxide, to achieve rapid algae killing by enhancing the oxidizing effect of the oxidant. However, existing problems such as uneven algae mixing, short contact time, and selective oxidation of oxidation products lead to low process efficiency and high energy consumption. Furthermore, the inability to effectively replenish dissolved oxygen in the water poses a risk of further damage to the already fragile aquatic ecosystem. Therefore, there is an urgent need to structurally and technologically upgrade existing microalgae on-site treatment equipment and find more energy-efficient and high-efficiency integrated equipment. Utility Model Content

[0004] The purpose of this invention is to provide a device for treating microalgae in lakes and rivers by coupling aerobic microorganisms with Fenton reaction. By coupling an artificial seaweed aeration system with Fenton reaction, microalgae in lakes and rivers are flocculated and precipitated, thereby solving the defects mentioned in the background art.

[0005] To achieve the above objectives, this utility model provides the following technical solution:

[0006] An apparatus for treating microalgae in lakes and rivers using aerobic microorganisms coupled with Fenton oxidation includes an artificial seagrass system installed in the lake or river, an aeration device located below the artificial seagrass system, and a Fenton oxidation system located above the surface of the lake or river. The artificial seagrass system provides an attachment carrier for aerobic microorganisms in the water, the aeration device provides oxygen to the aerobic microorganisms attached to the artificial seagrass system, and the Fenton oxidation system sprays Fenton reagent into the water.

[0007] As a further improvement, a solar power system for supplying power to the aeration device and the Fenton oxidation system is also included.

[0008] As a further improvement, the aeration device includes an aeration pipe, one end of which is connected to an air pump, and the top of the aeration pipe is provided with a plurality of microporous aeration heads evenly spaced along its length.

[0009] As a further improvement, the Fenton oxidation system includes a dosing pipe, one end of which is connected to a dosing tank via a dosing pump, and the bottom of the dosing pipe is provided with a plurality of dosing nozzles evenly spaced along its length.

[0010] As a further improvement, the artificial seagrass system includes multiple artificial seagrass bodies arranged in a rectangular array. The lower ends of the multiple artificial seagrass bodies are connected to the same heavy rope, which is connected to an anchor via an anchor rope. The upper ends of the multiple artificial seagrass bodies are connected to the same light rope, which is equipped with a float.

[0011] As a further improvement, the artificial seaweed body includes multiple individual artificial seaweeds connected vertically. Each individual artificial seaweed has a hook at both ends. Adjacent individual artificial seaweeds are connected by hooks. The lower end of the bottom individual artificial seaweed is connected to the heavy rope by a hook, and the upper end of the top individual artificial seaweed is connected to the light rope by a hook.

[0012] As a further improvement, a hanging ring matching the hook is provided between the heavy rope and the light rope.

[0013] Compared with the prior art, the beneficial effects of this utility model are:

[0014] The aeration device and Fenton oxidation system are powered by a solar power system, which is environmentally friendly, has high energy quality, and is flexible in use.

[0015] Artificial seaweed systems provide a carrier for aerobic microorganisms in water, and aeration devices provide oxygen for the aerobic microorganisms attached to the artificial seaweed system, which has a good treatment effect on low-concentration COD and biodegradable wastewater.

[0016] The Fenton oxidation system can simultaneously oxidize recalcitrant COD in lakes and rivers, and the iron flocs produced also have excellent treatment effects on microalgae in lakes and rivers.

[0017] The device of this invention has a simple structure, is environmentally friendly and energy-saving, reduces consumption, is pollution-free, and has a good treatment effect. It improves the condition of microalgae in lakes and rivers by combining aerobic microorganisms with Fenton, and has high environmental benefits. Attached Figure Description

[0018] To more clearly illustrate the technical solutions in the embodiments of this utility model or the prior art, the drawings used in the description of the embodiments or the prior art will be briefly introduced below. Obviously, the drawings described below are only some embodiments of this utility model. For those skilled in the art, other drawings can be obtained based on these drawings without creative effort.

[0019] Figure 1 This is a structural schematic diagram of Embodiment 1 of the present invention;

[0020] Figure 2 This is a schematic diagram of the artificial seaweed system according to Embodiment 1 of this utility model;

[0021] Figure 3 This is a schematic diagram of the structure of the artificial seaweed body in Embodiment 2 of this utility model;

[0022] Figure 4 yes Figure 3 A magnified view of a portion of the image.

[0023] In the diagram: 1-Artificial seaweed body; 2-Heavy rope; 3-Anchor rope; 4-Anchor; 5-Light rope; 6-Aeration pipe; 7-Air pump; 8-Microporous aeration head; 9-Dosing pipe; 10-Dosing nozzle; 11-Solar power generation device; 12-Energy storage device; 13-Single artificial seaweed; 14-Hanging buckle; 15-Hanging ring; 16-Float; 17-Dosing pump. Detailed Implementation

[0024] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments. Based on the embodiments of the present utility model, all other embodiments obtained by those of ordinary skill in the art without creative effort are within the protection scope of the present utility model. Example 1

[0025] like Figure 1 and Figure 2As shown in the figure, an apparatus for treating microalgae in lakes and rivers by coupling aerobic microorganisms with Fenton includes an artificial seagrass system disposed in the lakes and rivers, and the artificial seagrass system provides an attachment carrier for aerobic microorganisms in the water body. The artificial seagrass system includes a plurality of artificial seagrass bodies 1 distributed in a rectangular array. The lower ends of the plurality of artificial seagrass bodies 1 are connected to the same heavy rope 2, and the heavy rope 2 is connected to an anchor 4 through an anchor rope 3. The anchor 4 sinks to the bottom of the river or lake to play a fixing role. The upper ends of the plurality of artificial seagrass bodies 1 are connected to the same light rope 5, and a floating buoy 16 is strung on the light rope 5. In this embodiment, the artificial seagrass body 1 has 12 pieces distributed in a 3×4 rectangular array, and both the heavy rope 2 and the light rope 5 are in the shape of a Chinese character "ri". Specifically in implementation, the number of artificial seagrass bodies 1 can be set according to actual needs. The artificial seagrass body 1 is specifically made of several extremely thin ropes woven around a thicker main rope. The thin ropes are cut from PP plastic films, and the thin ropes extend out on both sides of the main rope in a feather shape, greatly increasing the contact area with the water flow. When the water flow passes through, the nutrient substances and aerobic microorganisms carried in the water flow attach to the artificial seagrass.

[0026] An aeration device located below the artificial seagrass system provides oxygen supply for the aerobic microorganisms attached to the artificial seagrass system. The aeration device includes an aeration pipe 6 extending horizontally. One end of the aeration pipe 6 is connected to an air pump 7, and a plurality of micro - pore aeration heads 8 are evenly spaced along the length direction on the top of the aeration pipe 6. The aeration device provides oxygen supply for the aerobic microorganisms attached to the artificial seagrass system, which can effectively increase the activity of the microorganisms attached to the artificial seagrass.

[0027] And a Fenton oxidation system located above the liquid level of the lakes and rivers. The Fenton oxidation system includes a chemical - adding pipe 9 extending horizontally. One end of the chemical - adding pipe 9 is connected to a chemical - supplying tank through a chemical - adding pump 17, and a plurality of chemical - adding nozzles 10 are evenly spaced along the length direction at the bottom of the chemical - adding pipe 9. The Fenton oxidation system sprays Fenton reagent into the water body. The hydroxyl radicals generated in the Fenton process preliminarily pretreat the refractory pollutants in the lakes and rivers, increasing the biodegradability of the pollutants in the water body. At the same time, the divalent iron ions after Fenton oxidation form trivalent iron ions, and the trivalent iron ions have a flocculation and precipitation effect, which can effectively remove the difficult - to - remove microalgae in the water body.

[0028] It also includes a solar power system for supplying power to the aeration device and the Fenton oxidation system. The solar power system includes a solar power generation device 11 and an energy storage device 12 connected by an electrical circuit. The air pump 7 and the dosing pump 17 are electrically connected to the solar power system. During peak power generation periods, a portion of the electricity generated by the solar power generation device 11 is supplied to the aeration device and the Fenton oxidation system, and the excess electricity is stored in the energy storage device 12. When the solar power generation device 11 is in a low-power generation period, the electricity generated by the solar power generation device 11 is insufficient to supply the aeration device and the Fenton oxidation system, and the electricity stored in the energy storage device 12 can supply the aeration device and the Fenton oxidation system.

[0029] In the entire system, the artificial seagrass system provides an attachment carrier for aerobic microorganisms in the water, and the aeration device provides oxygen supply for the aerobic microorganisms attached to the artificial seagrass system. With the combined action of these two systems, easily degradable COD can be effectively removed. The Fenton oxidation system oxidizes the recalcitrant pollutants in the water into easily degradable pollutants, while the iron flocs it forms aggregate and remove microalgae in the water.

[0030] Table 1 shows the treatment effect on the artificial river water. Treatment conditions: treatment area 300m². 2 Water depth 2m, artificial seaweed body 1, quantity 4 roots / m 2 The microporous aeration head has 8 units per meter, and the dosing nozzle has 10 units per meter. The total dosing volume is 100L, which will be added in 2 days.

[0031] Table 1:

[0032] Table 2 shows the treatment effect on natural lake water. Treatment conditions: treatment area 200m². 2 Water depth 1.8m, artificial seaweed body 1, quantity 5 roots / m 2 There are 2 microporous aeration heads per m and 2 chemical dosing nozzles per m. The total chemical dosage is 120L, which will be completed in 1 day.

[0033] Table 2: Example 2

[0034] like Figure 3 and Figure 4 As shown, the artificial seaweed mass 1 comprises multiple individual artificial seaweed 13 connected vertically. Each individual artificial seaweed 13 has a hook 14 attached to its upper and lower ends. Adjacent individual artificial seaweed 13s are connected by hooks 14. The lower end of the bottom individual artificial seaweed 13 is connected to a heavy rope 2 via hooks 14, and the upper end of the top individual artificial seaweed 13 is connected to a light rope 5 via hooks 14. The hooks 14 allow for easy adjustment of the number of individual artificial seaweed 13 on the artificial seaweed mass 1 according to the depth of the river or lake.

[0035] To facilitate the connection of the individual artificial seaweed 13 with the heavy rope 2 and the light rope 5, the heavy rope 2 and the light rope 5 are respectively bound with hanging rings 15 that match the hooks 14 by steel wire or cable ties.

[0036] The foregoing has shown and described the basic principles, main features, and advantages of this utility model. Those skilled in the art should understand that this utility model is not limited to the above embodiments. The embodiments and descriptions in the specification are merely preferred examples and are not intended to limit the utility model. Various changes and modifications can be made to this utility model without departing from its spirit and scope, and all such changes and modifications fall within the scope of the claimed utility model. The scope of protection of this utility model is defined by the appended claims and their equivalents.

Claims

1. A device for treating microalgae in lakes and rivers using aerobic microorganisms coupled with Fenton, characterized in that: The system includes an artificial seagrass system installed in a lake or river, an aeration device located below the artificial seagrass system, and a Fenton oxidation system located above the surface of the lake or river. The artificial seagrass system provides an attachment carrier for aerobic microorganisms in the water, the aeration device provides oxygen to the aerobic microorganisms attached to the artificial seagrass system, and the Fenton oxidation system sprays Fenton reagent into the water.

2. The device for treating lake and river microalgae using aerobic microorganisms coupled with Fenton as described in claim 1, characterized in that: It also includes a solar power system for supplying power to the aeration device and the Fenton oxidation system.

3. The device for treating lake and river microalgae using aerobic microorganisms coupled with Fenton as described in claim 1, characterized in that: The aeration device includes an aeration pipe, one end of which is connected to an air pump, and the top of the aeration pipe is provided with a plurality of microporous aeration heads evenly spaced along its length.

4. The device for treating lake and river microalgae using aerobic microorganisms coupled with Fenton as described in claim 1, characterized in that: The Fenton oxidation system includes a dosing pipe, one end of which is connected to a dosing tank via a dosing pump, and the bottom of the dosing pipe is provided with a plurality of dosing nozzles evenly spaced along its length.

5. The apparatus for treating lake and river microalgae using aerobic microorganisms coupled with Fenton as described in claim 1, characterized in that: The artificial seagrass system includes multiple artificial seagrass bodies arranged in a rectangular array. The lower ends of the multiple artificial seagrass bodies are connected to the same heavy rope, which is connected to an anchor via an anchor rope. The upper ends of the multiple artificial seagrass bodies are connected to the same light rope, which is equipped with a float.

6. The apparatus for treating lake and river microalgae using aerobic microorganisms coupled with Fenton as described in claim 5, characterized in that: The artificial seaweed body comprises multiple individual artificial seaweed units connected vertically. Each individual artificial seaweed unit has a hook at both its top and bottom ends. Adjacent individual artificial seaweed units are connected by hooks. The lower end of the bottom individual artificial seaweed unit is connected to the heavy rope by a hook, and the upper end of the top individual artificial seaweed unit is connected to the light rope by a hook.

7. The apparatus for treating lake and river microalgae using aerobic microorganisms coupled with Fenton as described in claim 6, characterized in that: A hanging ring matching the hook is provided between the heavy rope and the light rope.

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