Rapid emergency intelligent processing method and system for lake algal bloom outbreak

Abstract

The invention discloses a rapid emergency intelligent treatment method and system for lake algal bloom outbreak, and belongs to the technical field of water environment governance, and the treatment method comprises the steps that a plurality of long-strip-shaped standard enclosure pieces are sequentially connected end to end to form an enclosure, and an algal bloom outbreak area is surrounded; geographic position information and water chlorophyll concentration information are obtained through a monitoring device in the enclosure and transmitted to a cloud processing platform, and the cloud processing platform plans a driving route according to the geographic position information and determines the dosage of a flocculating agent and a biological inhibitor according to the chlorophyll concentration; the unmanned ship loads a flocculating agent and a biological inhibitor in sequence according to the respective dosage, and enters the enclosure along the driving route to be thrown after each time of loading. Through combined application of the semi-open enclosure and an intelligent system, the whole treatment process is more efficient and convenient, the labor cost is reduced, and a more scientific, efficient and economical solution is provided for treatment of cyanobacterial bloom.

Description

Technical Field

[0001] The present invention relates to the technical field of water environment treatment, and in particular to a rapid emergency intelligent treatment method for lake algal bloom outbreaks and a system thereof. Background Art

[0002] With the continuous expansion of human activities and the increasing severity of environmental pollution, the frequency of blue algae blooms in natural water bodies such as rivers and lakes has increased dramatically, showing a trend of high incidence, frequent occurrence and even outbreaks. This phenomenon not only seriously damages the ecological balance of water bodies, but also directly threatens the safety of drinking water sources and the sustainable development of aquaculture. In order to effectively respond to this challenge, enclosure technology has been widely used as a physical isolation method in the management of blue algae blooms, which has played a key role in controlling the spread of blue algae and ensuring water ecological safety.

[0003] However, the traditional fixed enclosures gradually reveal their limitations in application. Once their position and shape are determined, they are difficult to adjust flexibly and difficult to adapt to complex and changing hydrological conditions and governance needs. In some cases, fixed enclosures may not be able to completely cover the cyanobacteria aggregation area, resulting in poor governance effects; and when emergencies occur, their fixedness also limits the ability to respond and adjust quickly. In addition, fixed enclosures may also hinder the natural flow of water, affect the self-purification mechanism and ecological balance of water bodies, and further aggravate the problem of water pollution. At the same time, fixed enclosures are exposed to the natural environment for a long time and are easily damaged by natural factors such as wind and rain erosion, sun aging, etc., and need to be regularly repaired and replaced, which undoubtedly increases the governance cost and maintenance difficulty. In addition, specific cyanobacteria governance measures (such as biological agent placement, water quality regulation, etc.) need to be implemented inside the enclosure, which requires additional investment of a large amount of manpower, material and financial resources. Therefore, it is particularly important to design a semi-open enclosure with free exchange of water below and its supporting intelligent cyanobacteria governance measures.

[0004] In order to solve the current problems of isolating the target area with fixed enclosures and inaccurate and uneven manual spreading of algaecides after the outbreak of blue algae, it is necessary to develop a rapid emergency intelligent treatment method and system for lake algal bloom outbreaks based on semi-open enclosures. Summary of the invention

[0005] The purpose of the present invention is to solve the shortcomings of the above-mentioned background technology and provide a rapid emergency intelligent treatment method for lake algal bloom outbreaks. The core of the present invention lies in the construction of a semi-open intelligent enclosure with free flow of water below and the precise and intelligent implementation of the governance strategy within the enclosure. It adopts a modular standard unit design and is flexibly combined according to the actual situation of the water area. It not only simplifies the installation process, but also effectively isolates the polluted area through rapid deployment and adjustment, greatly shortens the construction period, and creates favorable conditions for subsequent governance.

[0006] The technical solution of the present invention is: a rapid emergency intelligent treatment method for lake algal bloom outbreaks, comprising the following steps:

[0007] A plurality of long standard enclosure pieces are connected end to end in sequence to form an enclosure to surround the algal bloom outbreak area, wherein the top of the standard enclosure piece floats on the water surface and the bottom has a vertical spacing from the water bottom;

[0008] The monitoring device in the enclosure is used to obtain the geographical location information and the chlorophyll concentration information of the water body and transmit it to the cloud processing platform. The cloud processing platform plans the driving route according to the geographical location information and determines the dosage of flocculants and bio-inhibitors according to the chlorophyll concentration.

[0009] The unmanned boat loads flocculants and bio-inhibitors in sequence according to their respective dosages, and after each loading, it enters the enclosure and scatters them along the driving route.

[0010] The present invention uses standard enclosure pieces to assemble into a semi-open enclosure, which can isolate the cyanobacteria diffusion area on the surface water to a certain extent, while maintaining the natural fluidity under the water body, reducing the impact on the overall ecosystem of the lake. The enclosure is constructed using unit integration, and the size and position of the enclosure can be flexibly adjusted according to actual conditions. Combined with advanced monitoring technology and intelligent control systems, the present invention realizes real-time monitoring of the distribution and density of cyanobacteria. According to the monitoring results, the system can automatically calculate and adjust the amount of algae control agents to achieve precise spreading. This precise spreading method not only improves the efficiency of algae removal, but also significantly reduces the amount of agents used and the potential impact on the environment.

[0011] Preferably, each standard enclosure piece includes a long strip of enclosure cloth, an inflatable airbag arranged on the top of the enclosure cloth, and a stainless steel anchor chain arranged on the bottom of the enclosure cloth. The tops of both ends of the enclosure cloth are provided with connecting ropes, and both ends of the enclosure cloth are provided with magnetic attraction parts with opposite magnetic properties, and the magnetic attraction parts are strip-shaped and arranged along the width direction of the enclosure cloth. Furthermore, the inflatable airbag and the stainless steel anchor chain are both arranged along the length direction.

[0012] Preferably, a plurality of long standard enclosure spacers are connected end to end in sequence, specifically comprising: connecting ropes at the end and end of two adjacent standard enclosure spacers are connected to each other, the magnetic suction parts are attached to each other, and the stainless steel anchor chain buckles are connected;

[0013] The inflatable air bag on the top of the standard enclosure piece floats on the water surface, and the vertical distance between the standard enclosure piece and the bottom of the water is 1 / 3 to 1 / 2 of the water depth.

[0014] Preferably, the dosage of the flocculant is calculated using formula (1):

[0015] C (chl) ×H×A×Z×10 3 =M×ω(1)

[0016] Among them, C (chl) is the chlorophyll concentration of the water to be treated, in μg / L;

[0017] H is the vertical distribution distance of cyanobacteria in the surface water, in meters;

[0018] A is the area of ​​the enclosure, in m 2 ;

[0019] Z is the flocculation and sedimentation rate of cyanobacteria, ranging from 0.92 to 0.98;

[0020] M is the dosage of flocculant, in g;

[0021] ω is the mass percentage of the effective ingredient in the flocculant. ω is generally 10-30%.

[0022] Furthermore, the dosage can be calculated using formula (2):

[0023] W=M×B×h×C(2)

[0024] Wherein, W is the dosage of bioinhibitor, unit is g;

[0025] M is the dosage of flocculant, unit is g;

[0026] B is the surface area of ​​cyanobacteria precipitation per gram of flocculant, ranging from 200 to 1000 m 2 / g;

[0027] h is the thickness of the floccules at the bottom of the water, ranging from 0.1 to 0.2 m;

[0028] C is the tolerance concentration of cyanobacteria to biological inhibitors, ranging from 0.01 to 0.05 mg / L.

[0029] Preferably, the enclosure is provided with one or multiple monitoring devices at intervals on the inner wall, the monitoring device includes a sensor module capable of measuring chlorophyll concentration, a positioning module capable of obtaining geographic location information, and a data processing and communication module capable of processing and transmitting the signals of the sensor module and the positioning module, the data processing and communication module being connected to the cloud processing platform signal;

[0030] When there are multiple monitoring devices, the cloud processing platform determines the dosage of flocculant and bioinhibitor according to the maximum value of chlorophyll concentration measured by all monitoring devices.

[0031] Preferably, the unmanned ship comprises a hull and a spreading device installed on the hull, and the unmanned ship loads the flocculant and the bio-inhibitor on the spreading device in sequence according to their respective dosages;

[0032] After each loading, the scattering along the route into the enclosure specifically includes: after each loading, the cloud processing platform controls the hull to enter the enclosure along the route, the cloud processing platform controls the scattering device to scatter after the hull enters the enclosure, and controls the hull to return after the scattering is completed. Furthermore, the bio-inhibitor is scattered one day after the flocculant is scattered.

[0033] The present invention also provides a rapid emergency intelligent processing system for lake algal bloom outbreaks, comprising:

[0034] A fence, wherein a plurality of long standard fence pieces are connected end to end to form a fence surrounding the algal bloom outbreak area, wherein the standard fence pieces are vertically spaced from the bottom of the water body, and a monitoring device is provided on the inner wall of the fence, wherein the monitoring device includes a sensor module capable of measuring chlorophyll concentration, a positioning module capable of obtaining geographic location information, and a data processing and communication module capable of processing and transmitting signals of the sensor module and the positioning module;

[0035] An unmanned ship, comprising a hull and a spreading device installed on the hull;

[0036] A cloud processing platform is connected to the data processing and communication module by signal to receive and process geographic location information and chlorophyll concentration information; the cloud processing platform is connected to the unmanned ship by signal to control the movement of the ship and the opening and closing of the spreading device.

[0037] Preferably, each standard enclosure piece comprises a long strip of enclosure cloth, an inflatable airbag arranged on the top of the enclosure cloth, and a stainless steel anchor chain arranged on the bottom of the enclosure cloth. Connecting ropes are arranged on the tops of both ends of the enclosure cloth. Magnetic attraction parts with opposite magnetic properties are respectively arranged at both ends of the enclosure cloth. The magnetic attraction parts are strip-shaped and arranged along the width direction of the enclosure cloth.

[0038] The connecting ropes at the head and tail ends of two adjacent standard enclosure spacers are connected to each other, the magnetic suction parts are fitted to each other, and the stainless steel anchor chain buckles are connected.

[0039] Furthermore, the inflatable airbag of each standard enclosure piece floats on the water surface, and the vertical distance between the bottom of each standard enclosure piece and the water bottom is 1 / 3 to 1 / 2 of the water depth.

[0040] The beneficial effects of the present invention include:

[0041] (1) The semi-open enclosure, which is assembled from standard enclosure pieces, is a water management structure between fully enclosed and fully open. It allows free exchange of water under the enclosure while effectively isolating and controlling algae floating on the water surface. This design is efficient and convenient in installation, while avoiding the ecological imbalance caused by the current fixed enclosure that completely closes the water body, and also overcomes the difficulty of centralized implementation of governance measures in an open environment.

[0042] (2) An inflatable air bag is provided on the top of the standard enclosure to keep the top of the enclosure always above the water surface. The stainless steel anchor chain can be used as a counterweight and a connection part. Magnetic parts with opposite magnetic attraction are provided at both ends of the standard enclosure. When two adjacent standard enclosures are connected, the upper ends are connected by connecting ropes, the middle parts are fitted with magnetic attraction parts, and the lower ends are connected by stainless steel anchor chain buckles. The two are firmly connected and kept vertically straight to prevent blue algae from escaping from the gaps.

[0043] (3) The emergency intelligent treatment system integrates intelligent monitoring, precise positioning and automatic control technologies, which can achieve accurate identification of algae growth areas and accurate delivery of agents. The monitoring device installed on the enclosure can monitor the chlorophyll concentration in the water in real time. The cloud processing platform can automatically adjust the strategy of spreading agents carried by the unmanned boat based on these data to achieve accurate positioning and quantitative delivery of agents. This intelligent and automated delivery method not only improves the utilization rate of agents, but also reduces the potential impact on the water environment, ensuring the efficiency and environmental protection of the treatment measures.

[0044] (4) After the unmanned boat arrives at the designated location, it starts the drug spreading device and spreads the drug according to the predetermined dosage. The combination of new enclosures and intelligent management measures makes the entire treatment process more efficient and convenient, reduces labor costs, and provides a more scientific, efficient, and economical solution for the management of blue algae blooms. BRIEF DESCRIPTION OF THE DRAWINGS

[0045] The drawings herein are incorporated into the specification and constitute a part of the specification, illustrate embodiments consistent with the present application, and are used together with the specification to explain the principles of the present application. In order to more clearly illustrate the technical solutions in the embodiments of the present application or the prior art, the drawings required for use in the embodiments or the prior art description will be briefly introduced below. Obviously, for ordinary technicians in this field, other drawings can be obtained based on these drawings without paying creative labor.

[0046] Figure 1 Schematic diagram of the standard enclosure structure

[0047] Figure 2 Schematic diagram of assembling standard enclosure pieces into enclosures

[0048] Figure 3 Schematic diagram of the monitoring device

[0049] Figure 4 Data processing flow for rapid emergency intelligent processing of lake algae bloom outbreaks

[0050] Among them: 1-inflatable airbag 2-enclosing cloth 3-stainless steel anchor chain 4-connecting rope 5-magnetic suction part 6-installation part 10-standard enclosing piece 20-monitoring device 21-sensor module 22-positioning module 23-data processing and communication module. DETAILED DESCRIPTION

[0051] To make the purpose, technical scheme and advantages of the embodiments of the present application clearer, the technical scheme in the embodiments of the present application will be clearly and completely described below in conjunction with the drawings in the embodiments of the present application. Obviously, the described embodiments are part of the embodiments of the present application, rather than all of the embodiments. Based on the embodiments in the present application, all other embodiments obtained by ordinary technicians in the field without making creative work belong to the scope of protection of the present application. Unless otherwise specified, various raw materials and equipment used in the present application can be purchased from the market or can be prepared by existing methods. The following specific embodiments further describe the present invention in detail.

[0052] In view of the drawbacks of the existing technology that fixed enclosures separate the target area and the manual application of algae control agents is inaccurate and uneven, the present invention uses standard enclosure pieces with unified structure to construct enclosures. According to the monitoring results of the monitoring device in the enclosure, the cloud processing platform can automatically calculate and adjust the application amount and position of the algae control agent to achieve precise application. This precise application method not only improves the algae removal efficiency, but also significantly reduces the use of agents and the potential impact on the environment.

[0053] The present invention provides a rapid emergency intelligent processing system for lake algal bloom outbreaks, comprising an enclosure, an unmanned boat and a cloud processing platform.

[0054] The enclosure is formed by connecting a plurality of long standard enclosure pieces 10 end to end, and the enclosure is a complete circle surrounding the water bloom outbreak area. The specific shape is not limited and is determined according to the actual shape of the water bloom outbreak area. It can be square, circular, polygonal, or even a ring along the entire lakeside. The structure of each standard enclosure piece 10 is as follows Figure 1 As shown, it includes a long strip of enclosure cloth 2, an inflatable airbag 1 arranged on the top of the enclosure cloth 2, and a stainless steel anchor chain 3 arranged on the bottom of the enclosure cloth 2. Connecting ropes 4 are provided on the top of both ends of the enclosure cloth 2. Magnetic attraction parts 5 with opposite magnetic properties are respectively provided at both ends of the enclosure cloth 2. The magnetic attraction parts 5 are strip-shaped and arranged along the width direction of the enclosure cloth 2. Figure 1 The left and right directions are the length directions of the standard enclosure spacers 10, and the up and down directions are the width directions of the standard enclosure spacers 10. Each standard enclosure spacer 10 is 1.5-2 meters long and 0.4-0.8 meters wide. The enclosure cloth 2 is preferably PVC cloth, and the inflatable airbag 1 is made of rubber.

[0055] Each standard enclosing spacer 10 has one end in the length direction as the head end and the other end as the tail end. The magnetic properties of the magnetic attraction parts 5 at the head end and the tail end are opposite. The magnetic attraction parts 5 at the head end of all standard enclosing spacers 10 are magnetically positive / negative poles, and the magnetic attraction parts 5 at the tail end are magnetically negative / positive poles. Therefore, when two standard enclosing spacers 10 are assembled and connected, the magnetic attraction parts 5 at the head end of one standard enclosing spacer 10 and the magnetic attraction parts 5 at the tail end of the other standard enclosing spacer 10 are attracted to each other by opposite poles to achieve fitting.

[0056] In some preferred embodiments, the connecting rope 4 at both ends of the enclosure cloth 2 is obtained by a long rope that passes through the entire enclosure cloth 2 along the length direction, with both ends exposed. The inflatable airbag 1 and the stainless steel anchor chain 2 are both arranged along the length direction of the enclosure cloth 2, and the magnetic attraction part 5 extends from the upper end to the lower end of the enclosure cloth 2 along the width direction. Figure 2 As shown, the connecting ropes 4 at the head and tail ends of two adjacent standard enclosure spacers 10 are connected to each other, the magnetic suction parts 5 are fitted to each other, and the stainless steel anchor chain 3 is buckled and connected.

[0057] The inner wall of the enclosure is provided with a monitoring device 20. The monitoring device 20 may be one or more. In some preferred embodiments, the monitoring device 20 may be more than one. The monitoring device 20 is provided on the inner wall of some selected standard enclosure pieces 10 at intervals. For example, in a square enclosure, one monitoring device 20 is provided on each side. The monitoring device 20 may be installed as follows: Figure 1 As shown, a mounting portion 6 is provided on the inner wall of the partition cloth 2 , and the monitoring device 20 is detachably connected to the mounting portion 6 , for example, magnetically attracted to the mounting portion 6 .

[0058] like Figure 3 As shown, the monitoring device 20 includes a sensor module 21 capable of measuring chlorophyll concentration, a positioning module 22 capable of acquiring geographic location information, and a data processing and communication module 23 capable of processing and transmitting signals from the sensor module 21 and the positioning module 22 .

[0059] The unmanned boat in the present invention comprises a hull and a throwing device installed on the hull.

[0060] In the present invention, the cloud processing platform is connected to the data processing and communication module 23 by signal for receiving geographic location information and chlorophyll concentration information; the cloud processing platform is connected to the unmanned boat by signal for controlling the movement of the boat and the opening and closing of the spreading device.

[0061] like Figure 4 As shown, the above system is used to carry out a rapid emergency intelligent treatment method for lake algal bloom outbreaks, including the following steps:

[0062] Step 1: When algal bloom breaks out in a local area of ​​a lake, the site is immediately surveyed, and a plurality of long standard enclosure pieces 10 are transported to the site and assembled into enclosures.

[0063] The specific assembly process is: connect the connecting ropes 4 at the head and tail ends of the two standard enclosure pieces 10 to each other, fit the magnetic suction parts 5 to each other, and connect the stainless steel anchor chain 3 with a buckle. The magnetic suction part 5 can ensure that the two adjacent standard enclosure pieces 10 are closely fitted vertically to prevent the blue algae from escaping from the gap. Some standard enclosure pieces 10 are also equipped with corresponding monitoring devices 20 until all the standard enclosure pieces 10 are connected head to tail to form a complete enclosure.

[0064] Then, the inflatable airbags 1 of all the standard enclosure pieces 10 are inflated, one by one or all the inflatable airbags 1 are connected as a whole and then inflated at the same time, so that the top of the enclosure rapidly expands on the water surface and reaches a predetermined shape and size, thereby quickly forming an isolation area to surround the algal bloom outbreak area. The vertical spacing between the standard enclosure piece 10 and the bottom of the water body is 1 / 2 of the water depth, which is convenient for the free flow of the water below.

[0065] Step 2: Use the monitoring device in the enclosure to obtain geographic location information and water chlorophyll concentration information and transmit them to the cloud processing platform. The cloud processing platform plans the route of the unmanned boat according to the geographic location information provided by the monitoring device 20. The cloud processing platform determines the dosage of flocculant and bio-inhibitor according to the chlorophyll concentration.

[0066] The variation range of chlorophyll concentration in the water body is detected by the monitoring devices 20 at different positions in the enclosure, and the data is transmitted to the cloud processing platform. The dosage of each agent (flocculant and bio-inhibitor) is calculated according to the chlorophyll concentration. When there are multiple monitoring devices, the cloud processing platform uses the maximum chlorophyll concentration as C (chl) Calculate the spreading dose.

[0067] Flocculants can adsorb algae cells and other organic and inorganic particles suspended in water, and aggregate these particles to form larger clumps through charge neutralization or bridging. These clumps will quickly sink to the bottom of the water body due to gravity, thereby achieving the removal of algae on the water surface. The algae that sink to the bottom of the water are specifically infected by biological inhibitors to inhibit the growth and reproduction of algae, thereby killing the algae. In the present invention, the effective ingredient in the flocculant is one or more of polyaluminium chloride, polyacrylamide and chitosan, and the effective ingredient content ω in the coagulant is generally 10-30% (mass fraction); the biological algaecide is one or more of algaecide and cellulase.

[0068] The flocculant dosage can be calculated using formula (1):

[0069] C (chl) ×H×A×Z×10 3 =M×ω(1)

[0070] Among them, C (chl) is the chlorophyll concentration of the water to be treated, in μg / L;

[0071] H is the vertical distribution distance of cyanobacteria in the surface water, in meters;

[0072] A is the area of ​​the enclosure, in m 2 ;

[0073] Z is the flocculation and sedimentation rate of cyanobacteria, which is generally 0.92 to 0.98;

[0074] M is the dosage of flocculant, in g;

[0075] ω is the mass percentage of the effective ingredient in the flocculant, generally 10 to 30%.

[0076] The bio-inhibitor was added one day after the flocculant was added. The dosage was calculated using formula (2):

[0077] W=M×B×h×C(2)

[0078] Wherein, W is the dosage of bioinhibitor, unit is g;

[0079] M is the dosage of flocculant, unit is g;

[0080] B is the surface area of ​​cyanobacteria precipitation per gram of flocculant, ranging from 200 to 1000 m 2 / g;

[0081] h is the thickness of the floccules at the bottom of the water, ranging from 0.1 to 0.2 m;

[0082] C is the tolerance concentration of cyanobacteria to biological inhibitors, ranging from 0.01 to 0.05 mg / L.

[0083] Step 3: Load the flocculant and bio-inhibitor (according to the dosage determined by each) on the spreading device on the unmanned ship in two batches. After each loading, the cloud processing platform sends the driving route to the unmanned ship. The ship enters the enclosure according to the driving route and controls the ship to travel in the enclosure in the direction where the chlorophyll concentration gradually decreases. The cloud processing platform starts the spreading device after the ship enters the enclosure, spreads according to the determined dosage, and controls the ship to return along the original route after the spreading is completed. The bio-inhibitor is added one day after the flocculant is added.

[0084] Example 1

[0085] Take a lake in Wuhan as an example. The high temperature continued in the summer, and blue algae broke out in the lake. A rapid emergency intelligent treatment method for lake algae bloom outbreaks was carried out, including the following steps:

[0086] Step 1: When algal bloom breaks out in a local area of ​​a lake, the site is immediately surveyed, and a plurality of long standard enclosure pieces 10 are transported to the site and assembled into enclosures.

[0087] The technicians immediately investigated the site and determined that the water depth of the blue algae outbreak area was 1.2 meters and the area A = 1000m 2 . The size of a single standard enclosure piece 10 is determined to be 1.5 meters long and 0.6 meters wide. The head and tail ends of adjacent standard enclosure pieces 10 are connected to each other by connecting ropes 4, the magnetic parts 5 are fitted together, and the stainless steel anchor chain 3 is snap-connected. Multiple monitoring devices 20 are fixed to the mounting part 6 of the standard enclosure piece 10 by magnetic attraction. Then the inflation device is connected to the inflatable airbag 1 and inflated at an inflation pressure of 3 atmospheres. After the enclosure is inflated, it expands rapidly on the water surface and reaches a predetermined shape and size to form an isolation area. The vertical distance between the standard enclosure piece 10 and the bottom of the water body is 0.6m (1 / 2 of the water depth).

[0088] Step 2: Use the monitoring device 20 in the enclosure to obtain geographic location information and water chlorophyll concentration information and transmit them to the cloud processing platform. The cloud processing platform plans the route according to the geographic location information provided by the monitoring device 20. The cloud processing platform determines the dosage of flocculant and bio-inhibitor according to the chlorophyll concentration.

[0089] The monitoring devices 20 at different locations detected that the chlorophyll concentration in the water body was 60-120 μg / L. After the field data was transmitted to the cloud processing platform, after analyzing the effect of wind direction, the chlorophyll concentration in the downwind water body was higher than that in the upwind water body. (chl) =120μg / L, the vertical distribution distance of cyanobacteria in the water body H = 0.4m, the flocculation and sedimentation rate of cyanobacteria Z = 0.95, the mass percentage content of the effective ingredient (polyaluminium chloride) in the flocculant ω = 25%, and the surface area of ​​cyanobacteria precipitation per gram of flocculant is B = 500m 2 / g, the thickness of flocs at the bottom of the water is h = 0.1m, and the tolerance concentration of cyanobacteria to biological inhibitors is C = 0.01mg / L.

[0090] According to calculations on the cloud processing platform, the amount of flocculant added to the enclosed area is M = 182.4 kg, and the amount of biological inhibitor added is W = 91.2 kg.

[0091] Step 3: Load the flocculant and bio-inhibitor on the spreading device of the unmanned boat according to their respective dosages (the first loading of flocculant M = 182.4 kg, the second loading of bio-inhibitor W = 91.2 kg). After each loading, the cloud processing platform sends the driving route to the unmanned boat. The boat enters the enclosure according to the planned driving route and controls the boat to travel in the enclosure in the direction where the chlorophyll concentration gradually decreases. The cloud processing platform starts the spreading device after the boat enters the enclosure, spreads the agent according to the determined dosage (flocculant M = 182.4 kg, bio-inhibitor W = 91.2 kg), and controls the boat to return after the spreading is completed. The bio-inhibitor is added one day after the flocculant is added.

[0092] The governance effects are shown in Table 1.

[0093] Table 1 Comparison of data before and after treatment

[0094]

[0095] It can be seen from Table 1 above that 7 days after all the agents were applied, the chlorophyll concentration dropped to about 1 / 5 of that before treatment, and the transparency was about 2 times that before treatment, with obvious algae removal effect.

Claims

1. A rapid emergency intelligent treatment method for lake algal bloom outbreaks, characterized in that: The following steps are involved: A plurality of long standard enclosure pieces (10) are connected end to end in sequence to form an enclosure to surround the algal bloom outbreak area, wherein the top of the standard enclosure piece (10) floats on the water surface and the bottom has a vertical spacing from the water bottom; The monitoring device in the enclosure is used to obtain the geographical location information and the chlorophyll concentration information of the water body and transmit it to the cloud processing platform. The cloud processing platform plans the route of the unmanned boat according to the geographical location information and determines the dosage of flocculants and bio-inhibitors according to the chlorophyll concentration. The unmanned boat loads flocculants and bio-inhibitors in sequence according to their respective dosages, and after each loading, it enters the enclosure and scatters them along the driving route.

2. The rapid emergency intelligent treatment method for water bloom outbreak according to claim 1, characterized in that: Each standard enclosure piece (10) comprises a long strip of enclosure cloth (2), an inflatable airbag (1) arranged on the top of the enclosure cloth (2), and a stainless steel anchor chain (3) arranged on the bottom of the enclosure cloth (2). Connecting ropes (4) are arranged on the top of both ends of the enclosure cloth (2). Magnetic attraction parts (5) with opposite magnetic properties are respectively arranged at both ends of the enclosure cloth (2). The magnetic attraction parts (5) are in the shape of strips arranged along the width direction of the enclosure cloth (2).

3. The rapid emergency intelligent treatment method for moss bloom outbreak according to claim 2, characterized in that: A plurality of long standard enclosure spacers (10) are sequentially connected end to end to form an enclosure, specifically comprising: connecting ropes (4) at the end and end of two adjacent standard enclosure spacers (10) are mutually connected, magnetic attraction parts (5) are mutually attached, and stainless steel anchor chains (3) are snap-connected; The inflatable air bag (1) on the top of the standard enclosure spacer (10) floats on the water surface, and the vertical distance between the bottom and the bottom of the water is 1 / 3 to 1 / 2 of the water depth.

4. The rapid emergency intelligent treatment method for water bloom outbreak according to claim 1, characterized in that: The flocculant dosage can be calculated using formula (1): C (chl) ×H×A×Z×10 3 = M×ω (1) Among them, C (chl) is the chlorophyll concentration of the water to be treated, in μg / L; H is the vertical distribution distance of cyanobacteria in the surface water, in meters; A is the area of ​​the enclosure, in m 2 ; Z is the flocculation and sedimentation rate of cyanobacteria, ranging from 0.92 to 0.98; M is the dosage of flocculant, in g; ω is the mass percentage of the effective ingredient in the flocculant.

5. The rapid emergency intelligent treatment method for water bloom outbreak according to claim 4, characterized in that: The dosage of the bioinhibitor can be calculated using formula (2): W=M×B×h×C (2) Wherein, W is the dosage of bioinhibitor, unit is g; M is the dosage of flocculant, unit is g; B is the surface area of ​​cyanobacteria precipitation per gram of flocculant, ranging from 200 to 1000 m 2 / g; h is the thickness of the floccules at the bottom of the water, ranging from 0.1 to 0.2 m; C is the tolerance concentration of cyanobacteria to biological inhibitors, ranging from 0.01 to 0.05 mg / L.

6. The rapid emergency intelligent treatment method for water bloom outbreak according to claim 1, characterized in that: The enclosure is provided with one or multiple monitoring devices at intervals on the inner wall, the monitoring device (20) comprising a sensor module (21) capable of measuring chlorophyll concentration, a positioning module (22) capable of acquiring geographical location information, and a data processing and communication module (23) capable of processing and transmitting signals from the sensor module (21) and the positioning module (22), the data processing and communication module (23) being connected to a cloud processing platform signal; When there are multiple monitoring devices, the cloud processing platform determines the dosage of flocculant and bioinhibitor according to the maximum value of chlorophyll concentration measured by all monitoring devices.

7. The rapid emergency intelligent treatment method for water bloom outbreak according to claim 1, characterized in that: The unmanned ship comprises a hull and a spreading device installed on the hull, and the flocculant and the bio-inhibitor are loaded on the spreading device of the unmanned ship in order according to their respective dosages; Entering into the enclosure along the driving route and scattering the materials after each loading specifically includes: after each loading, the cloud processing platform controls the hull to enter the enclosure along the driving route, the cloud processing platform controls the scattering device to scatter the materials after the hull enters the enclosure, and controls the hull to return after the scattering is completed.

8. A system for the rapid emergency intelligent treatment method for lake algal bloom outbreaks as claimed in any one of claims 1 to 7, characterized in that: include: A fence, wherein a plurality of long standard fence pieces (10) are connected end to end to form a fence surrounding the algal bloom outbreak area, wherein the standard fence pieces (10) are vertically spaced from the bottom of the water body, and a monitoring device (20) is provided on the inner wall of the fence, wherein the monitoring device (20) comprises a sensor module (21) capable of measuring chlorophyll concentration, a positioning module (22) capable of obtaining geographical location information, and a data processing and communication module (23) capable of processing and transmitting signals from the sensor module (21) and the positioning module (22); An unmanned ship, comprising a hull and a spreading device installed on the hull; A cloud processing platform, the cloud processing platform is connected to the data processing and communication module (23) by signal and is used to receive and process geographical location information and chlorophyll concentration information; the cloud processing platform is connected to the unmanned boat by signal and is used to control the movement of the boat and the opening and closing of the spreading device.

9. The system used in the rapid emergency intelligent treatment method for lake algal bloom outbreaks according to claim 8, characterized in that: Each standard enclosure piece (10) comprises a long strip of enclosure cloth (2), an inflatable airbag (1) arranged on the top of the enclosure cloth (2), and a stainless steel anchor chain (3) arranged on the bottom of the enclosure cloth (2). Connecting ropes (4) are arranged on the top of both ends of the enclosure cloth (2). Magnetic attraction parts (5) with opposite magnetic properties are respectively arranged on both ends of the enclosure cloth (2). The magnetic attraction parts (5) are in the shape of strips arranged along the width direction of the enclosure cloth (2). The connecting ropes (4) at the head and tail ends of two adjacent standard enclosure spacers (10) are connected to each other, the magnetic attraction parts (5) are fitted to each other, and the stainless steel anchor chain (3) is buckled and connected.

10. The system used in the rapid emergency intelligent treatment method for lake algal bloom outbreaks according to claim 9, characterized in that: The inflated airbag (1) of each standard enclosure spacer (10) floats on the water surface, and the vertical distance between the bottom of each standard enclosure spacer (10) and the bottom of the water is 1 / 3 to 1 / 2 of the water depth.

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