Device for inhibiting blue-green algae by coupling grass source organic matter with biological membrane slow release and manufacturing method

Abstract

The invention discloses a device for inhibiting blue-green algae by coupling grass source organic matter with biological membrane slow release and a manufacturing method, the device comprises an ecological floating bed assembly wrapped with a plastic pipe on the periphery, a solar power generation assembly erected above the ecological floating bed assembly, a hole for planting aquatic plants formed in the upper end face, and a traction rope arranged on the lower end face; a biological membrane assembly, an illumination system and an algae inhibition ball assembly are arranged on the traction rope; the edge of the ecological floating bed assembly is provided with an online monitoring coupling device, a control illumination system and an aeration pump. The device is stable in structure, easy to operate, sensitive in response and low in later maintenance and operation cost; the blue algae can be inhibited and removed in an environment-friendly, pollution-free, low-cost and high-efficiency manner; a comprehensive treatment scheme can be formed, the dissolved oxygen content of the water body is maintained, water body pollution caused by organic matter is effectively relieved, and the trend of multi-dimensional blue-green algae pollution treatment is met.

Description

Technical Field

[0001] The invention relates to water environment protection equipment and a manufacturing method thereof, and in particular to a device for inhibiting blue algae by slow-release through coupling of grass-derived organic matter with a biofilm and a manufacturing method thereof. Background Art

[0002] Cyanobacteria are prokaryotes widely distributed in freshwater and seawater. They will reproduce in large numbers under high concentrations of nutrients, suitable temperature and salinity conditions, forming algal blooms. The outbreak of cyanobacterial blooms not only destroys the ecological landscape of water bodies, but also reduces the diversity of ecosystems and causes large-scale death of aquatic organisms. Taking Taihu Lake in Jiangsu as an example, Meiliang Bay, Zhushan Bay and Gonghu Bay in the north of Taihu Lake are all areas where cyanobacterial blooms have broken out. In 2007, the cyanobacterial bloom in Taihu Lake even led to the "Wuxi Drinking Water Crisis", posing a huge threat to the ecological environment and social economy.

[0003] At present, the methods for preventing and controlling cyanobacteria are mainly divided into three categories: physical method, chemical method and biological method. Physical methods include aeration, ultrasound, etc., which control cyanobacteria by increasing the fluidity of water or destroying the cell structure of algae, but the cost is high and the scope of application is limited. Chemical methods mainly use chemical drugs such as algaecides and oxidants, which can quickly kill cyanobacteria, but at the same time there are ecological risks and may cause secondary pollution of water bodies. Biological methods absorb nutrients and inhibit the growth of algae by introducing aquatic plants and animals or microorganisms, which have the advantages of environmental protection and low cost.

[0004] Ecological floating bed is a commonly used device that uses the synergistic effect of plants and microorganisms to prevent and control blue algae and remove water pollution. Although this method has the advantages of simple operation, low cost and improvement of ecological landscape, it also has certain disadvantages: the ecological floating bed mainly relies on plants to absorb nutrients in the water to inhibit algae, and the control effect is limited for blue algae blooms that break out in a short period of time; the treatment effect of the floating bed is greatly affected by plant species, growth conditions and changes in the water environment, and it is difficult to achieve long-term and stable algae inhibition effects in complex water bodies; floating bed plants need to be regularly maintained and replaced, otherwise they may cause secondary pollution to the water body due to excessive growth or decay. Therefore, ecological floating beds are usually used as part of comprehensive management and combined with other methods to form a multi-dimensional approach, which is the current trend in the management of blue algae pollution. Summary of the invention

[0005] Purpose of the invention: The purpose of the present invention is to provide a device for inhibiting cyanobacteria by slow release through coupling biofilm with grass-derived organic matter, which combines physical, chemical and biological dimensions. The second purpose is to provide a method for manufacturing the same.

[0006] Technical solution: The device for inhibiting blue algae by slow release of grass-derived organic matter coupled with biofilm of the present invention comprises an ecological floating bed component wrapped with a plastic tube on the periphery, a solar power generation component is set up on the top, a hole for planting aquatic plants is set up on the upper end surface, and a plurality of traction ropes are set up on the lower end surface, and one or more biofilm components, one or more lighting systems and a plurality of algae inhibition ball components are set up on the traction ropes, and the biofilm components are inflated by an air pump fixed on the ecological floating bed component;

[0007] An online monitoring coupling device is provided at the edge of the ecological floating bed component, including an anode component inserted in the sediment at the bottom of the waterway, a cathode component arranged in the water body to be tested, and an external resistor connecting the positive and negative electrodes in series; the online monitoring coupling device is connected to the lighting system and the aeration pump arranged on the top surface and the bottom edge of the biofilm component through a data transmission line.

[0008] Preferably, in the device for inhibiting cyanobacteria by slow release of grass-derived organic matter coupled with biofilm, the ecological floating bed component is provided with 80-90 planting holes, and the plastic pipe for outer wrapping protection is a DN50 PE pipe.

[0009] Preferably, in the device for inhibiting cyanobacteria by slow release of grass-derived organic matter coupled with biofilm, the biofilm component has a biofilm layer with an aerobic-facultative-anaerobic gradient environment after being inflated by an air pump.

[0010] Preferably, in the device for inhibiting cyanobacteria by slow release through grass-derived organic matter coupled with biofilm, the algae-inhibiting ball component includes: an outer shell, and a core of a cyanobacteria-inhibiting bacterial agent wrapped in organic matter.

[0011] Preferably, in the device for inhibiting cyanobacteria by slow release through coupling of grass-derived organic matter with biofilm, the cathode assembly of the online monitoring coupling device contains 20-30 cathodes, and the installation interval between adjacent cathodes is not less than 3 cm.

[0012] Preferably, in the device for inhibiting cyanobacteria by slow release through coupling of grass-derived organic matter with biofilm, when the dissolved oxygen content in the water body of the online monitoring coupling device is lower than a threshold value, the lighting system and the aeration pump are controlled to start, wherein the threshold value is 2-3 mg / L.

[0013] Preferably, in the device for inhibiting cyanobacteria by slow release through grass-derived organic matter coupled with biofilm, the air pump is provided with a muffler.

[0014] The method for manufacturing the device for inhibiting blue algae by slow release through coupling of grass-derived organic matter with biofilm comprises:

[0015] (1) selecting a suitable biological algae inhibition component, wherein the biological algae inhibition component includes one or both of an ecological floating bed and a biofilm component containing an air pump;

[0016] (2) selecting a suitable physical algae inhibition component, wherein the physical algae inhibition component includes an online monitoring coupling device, and one or two of an aeration pump and a lighting system;

[0017] (3) selecting a suitable chemical algae inhibition component, wherein the chemical algae inhibition component includes an algae inhibition ball component;

[0018] (4) selecting a suitable energy supply component, wherein the energy supply component includes a solar power generation system;

[0019] (5) The above components are combined to form a device for inhibiting blue algae.

[0020] Beneficial effects: Compared with the prior art, the present invention has the following significant advantages: 1. The device has a stable structure, simple operation, sensitive response, and low later maintenance and operation costs; 2. It can inhibit and remove cyanobacteria in an environmentally friendly, pollution-free, low-cost and efficient manner; 3. Through the combination of the online monitoring coupling device with the lighting system and the aeration pump, the dissolved oxygen content of the water body can be effectively maintained, which consolidates the cyanobacteria inhibition effect while effectively alleviating water pollution caused by organic matter. BRIEF DESCRIPTION OF THE DRAWINGS

[0021] Figure 1 This is the structural diagram of the device for slow-release inhibition of cyanobacteria by coupling grass-derived organic matter with biofilm;

[0022] Figure 2 This is the bottom structure diagram of the grass-derived organic matter coupled biofilm slow-release blue algae inhibition device;

[0023] Figure 3 The results of cyanobacteria inhibition after the installation of the grass-derived organic matter coupled biofilm slow-release cyanobacteria inhibition device. DETAILED DESCRIPTION

[0024] The technical solution of the present invention is further described below.

[0025] Example 1: Specific structure, application method and method of the device for inhibiting cyanobacteria by slow release of grass-derived organic matter coupled with biofilm

[0026] How it works

[0027] An ecological floating bed 1 is established on the shore of the water surface. The floating bed 1 is provided with 88 individual planting holes 101, and aquatic plants are planted therein. The dissolved oxygen content of the water body is increased through oxygen secretion by the plant roots. The periphery of the ecological floating bed is wrapped and protected by a DN50 PE pipe 102.

[0028] An online monitoring coupling device 2 is provided at the edge of the ecological floating bed component 1. The specific principle and structure of the online monitoring coupling device 2 are as described in patent CN114920362B, and mainly include an anode component 201, a cathode component 202 and an external resistor 203. The anode component 201 is inserted into the bottom sediment of the waterway, and the cathode component 202 is set in the water body to be tested. The resistance of the external resistor 203 is 900Ω. The positive and negative electrodes are connected to the external resistor 203 by copper wire, and the connection between the wire and the electrode and the outside of the wire are sealed with epoxy resin. The number of external resistors is consistent with the number of cathodes, and any wire is connected in series with the external resistor and the anode to form a closed-loop circuit. There are two sets of good linear relationships between the dissolved oxygen content and the output power in the online monitoring coupling device 2. When the dissolved oxygen concentration in the water body is 0-3.0 mg / L, Y=0.029X+0.066 (correlation coefficient R 2 =0.889); when the dissolved oxygen concentration in the water is greater than 3.0 mg / L, Y = 0.062X + 0.041 (correlation coefficient R 2 =0.943). Where Y represents the voltage value (mV), and X represents the dissolved oxygen content in the water (mg / L).

[0029] The lower end surface of the ecological floating bed assembly 1 is provided with a stainless steel traction rope, which is fixed by a stainless steel cable connected in series. Two biofilm assemblies 3 are arranged at intervals on the traction rope near the center side of the ecological floating bed assembly 1. An air pump 6 provided with a muffler 601 is fixed on the edge of the ecological floating bed assembly 1 and connected to the biofilm assembly 3 through a plastic pipe. After being inflated by the air pump 6, the biofilm assembly 3 has an aerobic-facultative-anaerobic gradient environment biofilm layer, which can recruit microorganisms in the water body and provide a suitable environment to promote the degradation of pollutants in the water body. Eight groups of algae-inhibiting ball assemblies 5 are arranged on the traction rope on the edge side of the ecological floating bed assembly 1, each group of 6 algae-inhibiting ball assemblies 5 are installed at equal intervals along the traction rope. The algae-inhibiting ball assembly 5 includes: an outer shell, and a core of an organic matter-wrapped cyanobacterial growth-inhibiting bacterial agent, which can achieve a slow release of the cyanobacterial agent in the water body and achieve long-term inhibition of cyanobacteria.

[0030] Two lighting systems are arranged at intervals on the traction rope on the center side of the near-ecological floating bed assembly 1, and an aeration pump 7 is arranged at the edge of the online monitoring coupling device 2. The online monitoring coupling device 2 connects the lighting system 4 and the aeration pump 7 through a data transmission line. When the dissolved oxygen content in the water body is lower than 2 mg / L, the lighting system 4 and the aeration pump 7 are controlled to start, which catalyzes the decomposition of pollutants in the water body on the one hand, and increases the dissolved oxygen content in the water body on the other hand.

[0031] In addition, a solar power generation assembly 8 is installed above the ecological floating bed assembly 1 to provide power for the lighting system 4 and the air pump 6 or aeration pump 7 .

[0032] The device has the ability to resist impact ≥3m / s, the ability to resist wind and waves ≥45cm, the ability to resist freezing ≥17cm, the service life ≥10 years, and the average weighing ≥80kg / m 2 , stable structural characteristics; rated power of the device ≤ 2000W, convenient for field operation; the effective area of ​​the device is 200m 2 The algae inhibition efficiency of the device is to control the algae density within the range of action to ≤ 2x 10 6 / L, can achieve the effect of efficient algae removal, the specific algae inhibition effect is as follows Figure 3 shown.

Claims

1. A device for inhibiting cyanobacteria by slow release of grass-derived organic matter coupled with biofilm, characterized in that: The invention comprises an ecological floating bed assembly (1) whose outer periphery is wrapped with a plastic tube (102), a solar power generation assembly (8) is set on the upper part, a hole (101) for planting aquatic plants is set on the upper end surface, and a plurality of traction ropes are set on the lower end surface. The traction ropes are provided with one or more biofilm assemblies (3), one or more lighting systems (4) and a plurality of algae inhibition ball assemblies (5). The biofilm assemblies (3) are inflated by an air pump (6) fixed on the ecological floating bed assembly (1); An online monitoring coupling device (2) is provided at the edge of the ecological floating bed component (1), comprising an anode component (201) inserted into the sediment at the bottom of the waterway, a cathode component (202) arranged in the water body to be tested, and an external resistor connecting positive and negative electrodes in series; the online monitoring coupling device (2) is connected to a lighting system (4) and an aeration pump (7) arranged at the edges of the upper top surface and the lower bottom surface of the biofilm component (3) via a data transmission line.

2. The device for inhibiting cyanobacteria by slow release through coupling biofilm with grass-derived organic matter according to claim 1 is characterized in that: The ecological floating bed component (1) is provided with 80-90 planting holes (101), and the peripheral plastic pipe (102) is a DN50 PE pipe.

3. The device for inhibiting blue algae by slow release through grass-derived organic matter coupled with biofilm according to claim 1 is characterized in that: After being inflated by the air pump (6), the biofilm component (3) has a biofilm layer with an aerobic-facultative-anaerobic gradient environment.

4. The device for inhibiting blue algae by slow release through grass-derived organic matter coupled with biofilm according to claim 1 is characterized in that: The algae-inhibiting ball assembly (5) comprises: an outer shell, and a core of a bacterial agent for inhibiting the growth of blue algae wrapped in organic matter.

5. The device for inhibiting blue algae by slow release through grass-derived organic matter coupled with biofilm according to claim 1 is characterized in that: The cathode assembly of the online monitoring coupling device (2) contains 20-30 cathodes.

6. The device for inhibiting blue algae by slow release through grass-derived organic matter coupled with biofilm according to claim 1 is characterized in that: The installation interval between adjacent cathodes of the cathode assembly of the online monitoring coupling device (2) is not less than 3 centimeters.

7. The device for inhibiting blue algae by slow release through grass-derived organic matter coupled with biofilm according to claim 1 is characterized in that: When the dissolved oxygen content in the water body is lower than a threshold value, the online monitoring coupling device (2) controls the lighting system (4) and the aeration pump (7) to start.

8. The device for inhibiting blue algae by slow release through grass-derived organic matter coupled with biofilm according to claim 7 is characterized in that: The threshold value is 2-3 mg / L.

9. The device for inhibiting blue algae by slow release through grass-derived organic matter coupled with biofilm according to claim 1, characterized in that: The air pump (6) is provided with a muffler (601).

10. A method for manufacturing a device for inhibiting cyanobacteria by slow release through coupling of grass-derived organic matter with biofilm as claimed in claim 1, characterized in that: include: (1) selecting a suitable biological algae inhibition component, wherein the biological algae inhibition component includes one or both of an ecological floating bed and a biofilm component containing an air pump; (2) selecting a suitable physical algae inhibition component, wherein the physical algae inhibition component includes an online monitoring coupling device, and Aeration pump, lighting system or both; (3) selecting a suitable chemical algae inhibition component, wherein the chemical algae inhibition component includes an algae inhibition ball component; (4) selecting a suitable energy supply component, wherein the energy supply component includes a solar power generation system; (5) The above components are combined to form a device for inhibiting blue algae.

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