An assembled micro-polluted lake water in-situ purification steady-state maintaining system and method

Abstract

The present application belongs to the technical field of lake water purification system, and particularly relates to an assembled micro-polluted lake water in-situ purification steady-state maintaining system and method. The technical scheme is as follows: an assembled micro-polluted lake water in-situ purification steady-state maintaining system comprises a plurality of layers of filter purification devices arranged in superposition, and the lowermost filter purification device is connected with an adjusting support; the filter purification device comprises a plurality of enclosed outer plates, a plurality of enclosed inner plates are arranged in the enclosed space of the plurality of outer plates, the outer plates and the inner plates are both provided with channels for water flow, the space between the outer plates and the inner plates is filled with filter material, the inner plates are connected with ultraviolet lamp tubes, and the inner walls of the inner plates are provided with photocatalytic material plates; a spraying unit is arranged above the uppermost filter purification device, and the water taking end of the spraying unit extends into the area between the inner plate and the ultraviolet lamp tube. The present application provides an assembled micro-polluted lake water in-situ purification steady-state maintaining system and method.

Description

TECHNICAL FIELD

[0001] The present application belongs to the technical field of lake water purification system, and particularly relates to an assembled micro-polluted lake water in-situ purification steady-state maintaining system and method. BACKGROUND

[0002] With the rapid development of urbanization, a large amount of life and production wastewater containing high-concentration pharmaceuticals and personal care products (PPCPs) of refractory organic pollutants is discharged into conventional wastewater treatment plants through municipal pipe networks, and then discharged into the water environment after treatment by the wastewater treatment plants. However, the conventional wastewater treatment process is difficult to efficiently remove the pharmaceuticals and personal care products organic pollutants in the wastewater, thereby leading to the gradual increase of the types and concentrations of residual refractory organic pollutants in the water environment (lake water, river, reservoir water body). The residual pollutants in the water environment mainly include various antibiotics, environmental estrogens, and residual compounds such as pesticides, which have a long half-life in the water environment and are slowly biodegradable, and have potential hazards of acute carcinogenicity, teratogenicity, and mutagenicity at a certain concentration. At the same time, after entering the lake, the pollutants will gradually accumulate in the steady-state system food chain in the lake, and seriously affect the endogenous steady-state maintaining capacity of the lake.

[0003] At the same time, the enrichment of nutrients such as nitrogen and phosphorus in the lake body will lead to water eutrophication, causing water quality deterioration, and the death of aquatic plants and fish due to oxygen deficiency, and even potential harm to human health. At present, the lake water purification treatment mainly includes regular water replenishment, chemical drug scattering, and microbial inoculant injection. Although regular water replenishment can reduce the salt content and pollutant concentration in the lake body, it cannot fundamentally solve the water quality problem, and the water replenishment cost is high; scattering chemical drugs will damage the ecological environment of the lake water, have toxic effects on organisms, and produce a large amount of high-concentration sludge, affecting the ecological environment of the lake bottom; injection of microbial inoculants may have potential hazards and have a great impact on aquatic plants and animals in the lake body; the conventional activated sludge method has a large reactor size and high operation and management difficulty, and cannot flexibly handle the lake with periodic water quality deterioration, especially the large water body such as artificial lake body which has weak self-purification ability.

[0004] In summary, at present, the conventional lake water purification treatment methods have the following problems:

[0005] First, the water replenishment cost is high and cannot fundamentally solve the problem.

[0006] Second, scattering chemical drugs has a great impact on the water ecological system in the lake body, and the sediment sludge has great harm to the endogenous problem of the lake body.

[0007] Third, the conventional biological method has weak removal capacity for TP, TN, and refractory organic matter in water.

[0008] Fourth, it is impossible to real-time the water quality of the inlet and outlet sections and real-time adjust the treatment parameters.

[0009] At present, a micro-polluted lake water purification technology with in-situ pollutant removal capability is urgently needed. SUMMARY

[0010] In order to solve the above problems existing in the prior art, the purpose of the present application is to provide an assembled micro-polluted lake water in-situ purification steady-state maintenance system and method.

[0011] The technical scheme adopted by the present application is as follows:

[0012] An assembled micro-polluted lake water in-situ purification steady-state maintenance system comprises a plurality of layers of filter purification devices arranged in superposition, and the lowermost filter purification device is connected with an adjusting support; the filter purification device comprises a plurality of enclosed outer plates, a plurality of enclosed inner plates are arranged in the enclosed space of the plurality of outer plates, the outer plates and the inner plates are both provided with channels for water flow, the space between the outer plates and the inner plates is filled with filter material, the inner plates are connected with ultraviolet lamp tubes, and the inner walls of the inner plates are provided with photocatalytic material plates; a spraying unit is arranged above the uppermost filter purification device, and the water taking end of the spraying unit extends into the area between the inner plate and the ultraviolet lamp tube.

[0013] The spraying unit of the present application draws out the water flow between the inner plate and the ultraviolet lamp tube to provide water flow power, so that the external lake water can enter the area between the inner plate and the ultraviolet lamp tube through the outer plate, the filter material and the inner plate, forming a circulation.

[0014] The holes on the outer plate block impurities, the filter material between the outer plate and the inner plate fully filters the lake water, and the filtered lake water enters the area between the inner plate and the ultraviolet lamp tube through the filter slots on the inner plate. Thus, the outer plate, the filter material and the inner plate sequentially filter the lake water, reducing impurities in the water.

[0015] The ultraviolet lamp tube irradiates the photocatalytic material plate on the inner wall of the inner plate, thereby generating a photocatalytic reaction on the water body and degrading the refractory organic matter in the micro-polluted lake body.

[0016] The present application introduces the concept of assembly, and the plurality of filter purification devices, adjusting supports and spraying units can be spliced and replaced, and can be adjusted in real time according to the water depth of the lake body, so as to realize efficient operation of the equipment.

[0017] As a preferred scheme of the present application, the spraying unit comprises a solar cell panel, an air inflation baffle is connected to the edge of the solar cell panel, a water jet pump is installed on the solar cell panel, a spray head is connected to the water outlet of the water jet pump, and a water taking device is connected to the water inlet of the water jet pump, and the water taking device extends into the area between the inner plate and the ultraviolet lamp tube.

[0018] After the water jet pump is started, the water extractor extracts the water between the inner layer plate and the ultraviolet lamp tube and sprays it out, so that the external lake water can enter the area between the inner layer plate and the ultraviolet lamp tube through the outer layer plate, filter material and inner layer plate, realize circulation, and ensure that the external lake water can continuously enter the system to be treated.

[0019] The solar panels provide power for the water jet pump, filtering and purifying device and the like. The solar panels are large enough in area, and the inflatable blocking strips provide a certain buoyancy, so that the solar panels can float on the surface of the lake water, ensuring the normal work of the solar panels. Moreover, the solar panels provide buoyancy for the system, and the system can be conveniently moved to the area where lake water purification treatment is needed.

[0020] As a preferred scheme of the present application, the passages for water flow on the outer layer plate are a plurality of holes, and the holes arranged from top to bottom on the plurality of outer layer plates have an increasing trend. Since the jet unit is arranged on the filtering and purifying device at the uppermost end, the water flow speed is lower along the vertical direction of the area between the inner layer plate and the ultraviolet lamp tube. By making the holes arranged from top to bottom on the plurality of outer layer plates have an increasing trend, the treatment amount of lake water at each position in each filtering and purifying device can be made equivalent, and the overall treatment efficiency of the system on the lake water is improved.

[0021] As a preferred scheme of the present application, a plurality of interlayer support members are arranged between the outer layer plate and the inner layer plate, and a plurality of holes are arranged on the interlayer support members; the lower end of the filtering and purifying device at the lowermost end is connected with a bottom plate, and a plurality of holes are arranged on the bottom plate. The interlayer support plate and the bottom plate can connect the outer layer plate and the inner layer plate, and the water flow can pass through the interlayer support plate and the bottom plate.

[0022] As a preferred scheme of the present application, an oxidant mother liquor adding pipe is arranged in the space enclosed by the plurality of inner layer plates, and the oxidant mother liquor adding pipe is located at the lower side of the ultraviolet lamp tube. The oxidant mother liquor adding pipe adds oxidant to purify the water body.

[0023] As a preferred scheme of the present application, an aeration pipe is arranged in the space enclosed by the plurality of inner layer plates, and the aeration pipe is located at the lower side of the ultraviolet lamp tube. The aeration pipe can sufficiently aerate the lake water entering the system, and further improve the degradation efficiency of the refractory organic matter in the lake water.

[0024] As a preferred scheme of the present application, a lifting mechanism is connected to the filtering and purifying device at the lowermost end, the adjusting support includes a support rod member and a connecting rod member, the connecting rod member is connected to the output end of the lifting mechanism, and intermediate rod members are hingedly connected between the support rod member and the connecting rod member at two places, and a hydraulic rod is hingedly connected between one of the intermediate rod members and the support rod member.

[0025] The lifting mechanism can drive the filter purification device and the whole spraying unit to lift, so that the solar cell panel can be kept on the water surface.

[0026] As a preferred scheme of the present application, the bottom of the lowermost filter purification device is provided with a forward driving device.

[0027] As a preferred scheme of the present application, a control device is further included, and an online water quality detector is arranged on the inner side of the inner layer plate.

[0028] The online water quality detector detects the conductivity, temperature, chroma, pH value and dissolved oxygen of the water flow, and determines the water quality according to the water quality standard of the end face of each filter purification device.

[0029] An assembled micro-polluted lake water in-situ purification steady-state maintaining method comprises the following steps:

[0030] The spraying unit draws the water flow between the inner layer plate and the ultraviolet lamp tube to provide water flow power;

[0031] The external water flow passes through the outer layer plate, filter material and inner layer plate, and enters the area between the inner layer plate and the ultraviolet lamp tube for ultraviolet light catalytic treatment;

[0032] The aeration pipe performs aeration treatment on the water flow;

[0033] The oxidant mother liquor adding pipe adds oxidant mother liquor;

[0034] The online water quality detector detects the conductivity, temperature, chroma, pH value and dissolved oxygen of the water flow, and determines the water quality according to the water quality standard of the end face of each filter purification device.

[0035] The present application performs online water quality detection on the lake water in each filter purification device, adjusts the aeration amount, oxidant amount and ultraviolet lamp power according to the water quality, and realizes accurate control on the initial rainwater purification treatment.

[0036] The beneficial effects of the present application are:

[0037] 1. The holes on the outer layer plate block impurities, the filter material between the outer layer plate and the inner layer plate fully filters the lake water, and the filtered lake water enters the area between the inner layer plate and the ultraviolet lamp tube through the filter slot on the inner layer plate. Thus, the outer layer plate, the filter material and the inner layer plate sequentially filter the lake water, reducing impurities in the water.

[0038] 2. The ultraviolet lamp tube irradiates the photocatalytic material plate on the inner wall of the inner layer plate, thereby generating a photocatalytic reaction on the water body and degrading the refractory organic matter in the slightly polluted lake body. The oxidant mother liquor adding pipe adds oxidants to purify the water body. The aeration pipe can fully aerate the lake water entering the system, further improving the degradation efficiency of the refractory organic matter in the lake water.

[0039] 3. The present application improves the comprehensive purification effect of the lake water by filtering, ultraviolet photocatalytic treatment, oxidation treatment and sufficient aeration of the lake water, and can be applied to the lake body in a slightly polluted state.

[0040] 4. The present application detects the water quality of the lake water in each filter purification device online, adjusts the aeration amount, the oxidant dosage and the ultraviolet lamp power according to the water quality, and accurately controls the purification treatment of the initial rainwater. BRIEF DESCRIPTION OF DRAWINGS

[0041] Figure 1 is a structural schematic diagram of the first direction when the present application adopts a single-stage filter purification device;

[0042] Figure 2 is a structural schematic diagram of the second direction when the present application adopts a single-stage filter purification device;

[0043] Figure 3 is a structural schematic diagram when the present application adopts a double-stage filter purification device;

[0044] Figure 4 is a partial structure diagram of the present application;

[0045] Figure 5 is a structural schematic diagram of the first direction of the spraying unit;

[0046] Figure 6 is a structural schematic diagram of the second direction of the spraying unit;

[0047] Figure 7 is a structural schematic diagram of the filter purification device;

[0048] Figure 8 is a partial structure diagram of the filter purification device;

[0049] Figure 9is a structural schematic diagram of the ultraviolet lamp tube;

[0050] Figure 10 is a flow chart of the water quality detection and regulation method of the present application.

[0051] In the figure: 1-filtering and purifying device; 2-adjusting support; 3-spraying unit; 4-advancing power device; 5-oxidant mother liquor adding pipe; 6-aeration pipe; 7-online water quality detector; 11-outer layer plate; 12-inner layer plate; 13-ultraviolet lamp tube; 14-assembled lock; 15-lamp tube sleeve; 16-supporting frame; 17-interlayer supporting member; 18-bottom plate; 19-lifting mechanism; 21-supporting rod member; 22-connecting rod member; 23-intermediate rod member; 24-hydraulic rod; 31-solar cell panel; 32-inflatable baffle; 33-sprinkler; 34-water collector; 35-cover plate. DETAILED DESCRIPTION

[0052] To make the objectives, technical solutions and advantages of the embodiments of the present application clearer, the technical solutions in the embodiments of the present application will be described below in connection with the drawings in the embodiments of the present application. Obviously, the described embodiments are only some of the embodiments of the present application, rather than all the embodiments. The components of the embodiments of the present application described and shown in the drawings can be arranged and designed in various different configurations.

[0053] Therefore, the following detailed description of the embodiments of the present application provided in the drawings is not intended to limit the scope of the claimed present application, but only represents selected embodiments of the present application. All other embodiments obtained by those of ordinary skill in the art based on the embodiments in the present application without creative labor are within the scope of protection of the present application. It should be noted that the embodiments in the present application and the features in the embodiments can be combined with each other without conflict.

[0054] As Figures 1-4 shown, the assembled micro-polluted lake water in-situ purification steady-state maintaining system of the present embodiment includes a plurality of layers of overlapping filtering and purifying devices 1, and the lowermost filtering and purifying device 1 is connected with an adjusting support 2; the filtering and purifying device 1 includes a plurality of enclosed outer layer plates 11, a plurality of enclosed inner layer plates 12 are arranged in the space enclosed by the outer layer plates 11, the outer layer plates 11 and the inner layer plates 12 are both provided with passages for water flow, the space between the outer layer plates 11 and the inner layer plates 12 is filled with filter material, the inner layer plates 12 are connected with ultraviolet lamp tubes 13, and the inner walls of the inner layer plates 12 are provided with photocatalytic material plates; the uppermost filtering and purifying device 1 is provided with a spraying unit 3, and the water collecting end of the spraying unit 3 extends into the area between the inner layer plates 12 and the ultraviolet lamp tubes 13.

[0055] The jet unit 3 of the present application extracts the water flow between the inner layer plate 12 and the ultraviolet lamp tube 13 to provide water flow power, so that the external lake water can enter the area between the inner layer plate 12 and the ultraviolet lamp tube 13 through the outer layer plate 11, filter material and the inner layer plate 12, forming a circulation.

[0056] The holes on the outer layer plate 11 block impurities, and the filter material between the outer layer plate 11 and the inner layer plate 12 sufficiently filters the lake water, and the filtered lake water enters the area between the inner layer plate 12 and the ultraviolet lamp tube 13 through the filter slot on the inner layer plate 12. Thus, the lake water is sequentially filtered by the outer layer plate 11, filter material and inner layer plate 12, reducing impurities in the water.

[0057] The ultraviolet lamp tube 13 irradiates the photocatalytic material plate on the inner wall of the inner layer plate 12, thereby generating a photocatalytic reaction on the water body and degrading the refractory organic matter in the slightly polluted lake body.

[0058] The present application introduces the assembly concept, and the filter purification device 1, the adjusting support 2 and the jet unit 3 can be spliced and replaced, and can be adjusted in real time according to the water depth of the lake body, so as to realize efficient operation of the equipment.

[0059] The top and bottom of the filter purification device 1 are provided with assembly type locking pieces 14, and the height of the filter purification device 1 is adjusted by assembly splicing according to the water depth of the lake body.

[0060] The filter material is added in the interlayer between the outer layer plate 11 and the inner layer plate 12, which can be at least one or a combination of several of shell filter material, quartz sand filter material, anthracite filter material, magnetite filter material, support layer filter material, foam filter bead filter material, sponge iron filter material, rare earth magnetic sand filter material, corundum filter material, ceramsite filter material, shale filter material, volcanic rock filter material, manganese sand filter material, medical stone filter material, coke filter material, zeolite filter material, garnet filter material, activated alumina ball, activated carbon and other improved filter materials, and the particle size is selected according to the pore size.

[0061] The channel on the inner layer plate 12 is a filter slot, and the width of the filter slot is determined according to the water quality of the lake body. The inner wall of the inner layer plate 12 is provided with a high-efficiency photocatalytic material plate, and the photocatalytic material includes but is not limited to TiO2, ZnO and the like. The photocatalytic material plate is connected with the inner layer plate 12 by mechanical connection methods such as insertion and screwing.

[0062] As shown in Figure 7 and Figure 8 , the power of the ultraviolet lamp tube 13 can be adjusted according to the water quality of the inlet water. When the water quality is good, low power operation is performed, and vice versa. The ultraviolet lamp tube 13 is provided with a lamp tube sleeve 15 to avoid the adsorption of impurities in the water on the ultraviolet lamp tube, affecting the service life. The lamp tube sleeve 15 is connected with the inner layer plate 12 through a support frame 16 to ensure that the ultraviolet lamp tube 13 is reliably supported. The number of ultraviolet lamp tubes 13 in the filter purification device 1 can be multiple to improve the photocatalytic effect.

[0063] Specifically, as shown in Figure 5 and Figure 6 , the spraying unit 3 comprises a solar panel 31, the edge of the solar panel is connected with an air-filled baffle 32, a water spraying pump is installed on the solar panel, the water outlet of the water spraying pump is connected with a spray head 33, and the water inlet of the water spraying pump is connected with a water collector 34 which extends into the area between the inner layer plate 12 and the ultraviolet lamp 13. The lower side of the solar panel 31 is provided with a cover plate 35 which is assembled with the top of the uppermost filter and purification device 1, and the cover plate 35 realizes a sealing effect to avoid the lake water directly entering from the gap between the solar panel 31 and the filter and purification device 1.

[0064] After the water spraying pump is started, the water collector 34 draws the water between the inner layer plate 12 and the ultraviolet lamp 13 and sprays it out through the spray head 33, so that the external lake water can enter the area between the inner layer plate 12 and the ultraviolet lamp 13 through the outer layer plate 11, the filter material and the inner layer plate 12 to realize circulation and ensure that the external lake water can continuously enter the system for treatment.

[0065] The solar panel 31 provides power for the water spraying pump, the filter and purification device 1 and the like. The area of the solar panel 31 is large enough, and the air-filled baffle 32 provides a certain buoyancy, so that the solar panel 31 can float on the surface of the lake water to ensure the normal work of the solar panel 31. In addition, the solar panel provides buoyancy for the system, and the system can be conveniently moved to the area where the lake water needs to be purified. The air-filled baffle 32 can also block impurities from entering the solar panel 31.

[0066] In addition, as shown in Figure 2 , the bottom of the lowermost filter and purification device 1 is provided with a forward power device 4 which can rotate by 360°. The forward power device 4 can push the whole system to move, so as to facilitate the purification treatment of the lake water at various positions.

[0067] The spray head 33 sprays water to realize the effect of a fountain landscape. A spotlight can be installed at the spray head 33 to realize the effect of a fountain landscape at night.

[0068] As shown in Figure 7 , the passage for water flow on the outer layer plate 11 is a plurality of holes. The diameter of the holes of the outer layer plate 11 is adjusted according to the water quality of the lake body. In the case of poor water quality and many impurities, the diameter of the holes is 3-10 mm; in the case of good water quality, the diameter of the holes is 1-3 mm.

[0069] In order to improve the water treatment efficiency, the holes of the outer plates 11 arranged from top to bottom have a tendency to increase. Since the spraying unit 3 is arranged on the uppermost filter purification device 1, the water flow speed is lower along the vertical direction between the inner plate 12 and the ultraviolet lamp 13. By making the holes of the outer plates 11 arranged from top to bottom have a tendency to increase, the treatment capacity of each position in each filter purification device 1 can be made equivalent, and the overall treatment efficiency of the system on the lake water can be improved.

[0070] The specific manner is divided into two kinds: first, the hole size of the outer plate 11 on each layer of filter purification device 1 is the same, but the hole size of the outer plate 11 on the lower filter purification device 1 is larger than that of the outer plate 11 on the upper filter purification device 1; second, the hole size of the outer plate 11 on each layer of filter purification device 1 decreases in turn, and the hole size of the uppermost end of the lower outer plate 11 is larger than that of the lowermost end of the upper outer plate 11.

[0071] As shown in Figure 4 and Figure 8 , in order to ensure that the inner plate 12 is fixed, a plurality of interlayer support members 17 are arranged between the outer plate 11 and the inner plate 12, and the interlayer support member 17 is provided with a plurality of holes; the lower end of the lowermost filter purification device 1 is connected with a bottom plate 18, and the bottom plate 18 is provided with a plurality of holes. The interlayer support plate and the bottom plate 18 can connect the outer plate 11 and the inner plate 12, and provide support for the internal filter material. The water flow can pass through the interlayer support plate and the bottom plate 18 through the holes. The forward power device 4 is installed on the bottom plate 18.

[0072] As shown in Figure 9 , the plurality of inner plates 12 are provided with an oxidant mother liquor adding pipe 5 in the enclosed space, and the oxidant mother liquor adding pipe 5 is located below the ultraviolet lamp 13. The plurality of inner plates 12 are provided with an aeration pipe 6 in the enclosed space, and the aeration pipe 6 is located below the ultraviolet lamp 13 and the oxidant mother liquor adding pipe 5. The oxidant mother liquor adding pipe 5 adds oxidant to purify the water body. The adding material in the oxidant mother liquor adding pipe 5 can be H2O2, PS, PMS, PI, KMnO4, etc., and the diffusion part power is provided by the aeration pipe 6. The aeration pipe 6 is connected with a waterproof battery pack, and the waterproof battery pack is electrically connected with the solar cell panel 31.

[0073] The lowermost filter and purifier 1 is connected with a lifting mechanism 19, and a drainage device is arranged at the lifting mechanism 19 to control the floating or sinking of the device. The adjusting support 2 comprises a support rod 21 and a connecting rod 22, the connecting rod 22 is connected to the output end of the lifting mechanism 19, and two intermediate rods 23 are respectively hinged between the support rod 21 and the connecting rod 22, and a hydraulic rod 24 is hinged between one of the intermediate rods 23 and the support rod 21. The lifting mechanism 19 can drive the lifting of the filter and purifier 1 and the spraying unit 3 as a whole, so as to ensure that the solar panel 31 can be located on the water surface. The hydraulic rod 24 can drive the tilting of the support rod 21, so that the distance between the lowermost filter and purifier 1 and the bottom of the lake can be adjusted. By keeping a certain height between the filter and purifier 1 and the bottom of the lake, a certain water inflow can be maintained, and the water flow disturbance generated will not stir up the substrate at the bottom of the lake.

[0074] The system also comprises a control device, and an online water quality detector 7 is arranged on the inner side of the inner layer plate 12, and the online water quality detector 7 is internally provided with an electric conductivity online detection probe, a temperature online detection probe, a chroma online detection probe, a pH value online detection probe and a dissolved oxygen online detection probe, and the online water quality detector 7, the ultraviolet lamp 13, the oxidant mother liquor adding pipe 5 and the aeration pipe 6 are electrically connected with the control device.

[0075] The online water quality detector 7 detects the electric conductivity, temperature, chroma, pH value and dissolved oxygen of the water flow, and determines the water quality according to the water quality standard of the end face of each filter and purifier 1; if the water quality is poor, the aeration amount, the oxidant amount and the ultraviolet lamp power are increased; if the water quality is good, the aeration amount, the oxidant amount and the ultraviolet lamp power are reduced.

[0076] The assembly type micro-polluted lake water in-situ purification steady-state maintaining method comprises the following steps:

[0077] The spraying unit 3 draws out the water flow between the inner layer plate 12 and the ultraviolet lamp 13 to provide water flow power;

[0078] The external water flow enters the area between the inner layer plate 12 and the ultraviolet lamp 13 through the outer layer plate 11, the filter material and the inner layer plate 12, and is subjected to ultraviolet light catalytic treatment;

[0079] The aeration pipe 6 performs aeration treatment on the water flow;

[0080] The oxidant mother liquor adding pipe 5 adds oxidant mother liquor;

[0081] As Figure 10The on-line water quality detector 7 detects the conductivity, temperature, chroma, pH value and dissolved oxygen of the water flow, and determines the water quality according to the water quality standard of the end face of each filter purification device 1; if the water quality is poor, the aeration amount, the oxidant amount and the ultraviolet lamp power are increased; if the water quality is good, the aeration amount, the oxidant amount and the ultraviolet lamp power are decreased.

[0082] The present application performs on-line water quality detection on the lake water in each filter purification device 1, and adjusts the aeration amount, the oxidant amount and the ultraviolet lamp power according to the water quality, so as to realize accurate control of the purification treatment of the initial rainwater.

[0083] The present application is not limited to the above-mentioned optional embodiments, and anyone can derive other various forms of products under the inspiration of the present application, but regardless of any changes in shape or structure, any technical solution falling within the scope defined by the claims of the present application falls within the protection scope of the present application.

Claims

1. An assembled system for in-situ purification and steady-state maintenance of slightly polluted lake water, characterized by: The invention relates to a filter purification device (1) having a plurality of overlapping layers, wherein the filter purification device (1) at the bottom is connected to an adjustment bracket (2); the filter purification device (1) comprises a plurality of enclosed outer plates (11), a plurality of enclosed inner plates (12) are arranged in a space enclosed by the plurality of outer plates (11), a channel for water flow is provided on the outer plates (11) and the inner plates (12), a space between the outer plates (11) and the inner plates (12) is filled with filter material, an ultraviolet lamp (13) is connected to the inner plate (12), and a photocatalytic material plate is provided on the inner wall of the inner plate (12); an injection unit (3) is provided above the filter purification device (1) at the top layer, and a water intake end of the injection unit (3) extends into the area between the inner plate (12) and the ultraviolet lamp (13); The spray unit (3) includes a solar cell panel (31), an edge of the solar cell panel is connected to an inflatable baffle (32), a water pump is installed on the solar cell panel, a water outlet of the water pump is connected to a nozzle (33), a water inlet of the water pump is connected to a water dispenser (34), and the water dispenser (34) extends into the area between the inner plate (12) and the ultraviolet lamp (13); The passages for water flow on the outer plate (11) are a plurality of holes, and the holes arranged from top to bottom of the outer plate (11) tend to increase in size; A plurality of interlayer support members (17) are provided between the outer plate (11) and the inner plate (12), and a plurality of holes are provided on the interlayer support members (17); the lower end of the bottommost filtering and purifying device (1) is connected to a bottom plate (18), and a plurality of holes are provided on the bottom plate (18); An oxidant mother liquid feeding pipe (5) is provided in the space enclosed by the plurality of inner plates (12), and the oxidant mother liquid feeding pipe (5) is located at the lower side of the ultraviolet lamp tube (13); An aeration pipe (6) is provided in the space enclosed by the plurality of inner plates (12), and the aeration pipe (6) is located below the ultraviolet lamp tube (13); The bottom filter and purification device (1) is connected to a lifting mechanism (19), and the adjustment bracket (2) includes a support rod (21) and a connecting rod (22). The connecting rod (22) is connected to the output end of the lifting mechanism (19). Intermediate rods (23) are hinged at two locations between the support rod (21) and the connecting rod (22). A hydraulic rod (24) is hinged between one of the intermediate rods (23) and the support rod (21). The control device further comprises an online water quality detector (7) installed on the inner side of the inner plate (12). The online water quality detector (7) has built-in conductivity online detection probe, temperature online detection probe, color online detection probe, pH value online detection probe, dissolved oxygen online detection probe, and the online water quality detector (7), ultraviolet lamp (13), oxidant mother liquor addition pipe (5), and aeration pipe (6) are all electrically connected to the control device.

2. The assembled micro-polluted lake water in-situ purification steady-state maintenance system according to claim 1 is characterized by: A forward driving device (4) is installed at the bottom of the filtering and purifying device (1) at the lower end.

3. A method for maintaining the steady state of in-situ purification of slightly polluted lake water using the assembled system for maintaining the steady state of in-situ purification of slightly polluted lake water according to claim 1, characterized in that: The following steps are involved: The spray unit (3) extracts the water flow between the inner plate (12) and the ultraviolet lamp (13) to provide water flow power; External water flows through the outer plate (11), the filter material, and the inner plate (12) and enters the area between the inner plate (12) and the ultraviolet lamp (13) to undergo ultraviolet photocatalytic treatment; The aeration pipe (6) aerates the water flow; The oxidant mother liquid feeding pipe (5) is used to feed the oxidant mother liquid; The online water quality detector (7) detects the conductivity, temperature, color, pH value, and dissolved oxygen of the water flow, and determines the water quality according to the water quality standards at the end faces of the filtration and purification devices (1). If the water quality is poor, the aeration volume, the oxidant dosage, and the UV lamp power are increased; if the water quality is good, the aeration volume, the oxidant dosage, and the UV lamp power are reduced.

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