A water quality maintenance system based on a composite wetland system suitable for low temperatures

Abstract

The application provides a water quality maintaining system based on a composite wetland system suitable for low temperature, and belongs to the technical field of river water treatment, and comprises a pre-deposition ecological pond, a horizontal subsurface flow wetland and a multi-pond system which are sequentially connected, the pre-deposition ecological pond is provided with a water inlet, the multi-pond system is provided with a water outlet, the water flow path in the horizontal subsurface flow wetland is in a multi-segment curved shape, and the multi-pond system is provided with at least two submerged plant ponds which are connected with each other; wherein the pre-deposition ecological pond is provided with a gate body with a gate opening at the water inlet, a gate and a filtering device are arranged in the gate body in a lifting mode, a driving assembly for driving the gate and the filtering device to move in opposite directions is arranged in the gate body, and the gate body is provided with a containing groove at the bottom for the gate and the filtering device to descend; when the gate body is located in the containing groove, the filtering device is located at the gate opening of the gate body, and the filtering device is used for filtering and treating the water passing through the gate body. The application greatly increases the hydraulic retention time and improves the wetland water quality treatment effect.

Description

TECHNICAL FIELD

[0001] The present application belongs to the technical field of river water treatment, and more particularly to a water quality maintaining system based on a composite wetland system suitable for low temperature. BACKGROUND

[0002] From the recent sewage treatment research in China, it can be seen that the sewage treatment technology in China is developing from traditional sewage treatment technology to artificial wetland sewage treatment technology with comprehensive application of physics, chemistry and biology, and has achieved relatively remarkable results.

[0003] However, the application of artificial wetlands in practice is still in the initial exploration stage. Although the wetland process technology has made preliminary progress, the water quality purification effect of most artificial wetlands has not reached the expected effect, resulting in that the water treatment effect of artificial wetland water quality purification engineering is not obvious.

[0004] The existing wetland combination system includes a wetland edge and a deep water area, the right side of the wetland edge is provided with a tree plant area, the right side of the tree plant area is provided with a buffer area, the right side of the buffer area is provided with economic flowers, the right side of the economic flowers is provided with a bridge body, the lower side of the bridge body is provided with a water filtering area, the right side of the bridge body is provided with ornamental flowers, and the right side of the ornamental flowers is provided with a deep water left bank.

[0005] In the above wetland combination system, the water quality treatment is mainly the adsorption structure at the bottom of the deep water area and the planting of various plants, but for the case that the overall volume of the surface flow wetland is small, the hydraulic retention time is short, resulting in poor effect of the wetland on river water treatment. SUMMARY

[0006] The present application aims to provide a water quality maintaining system based on a composite wetland system suitable for low temperature, to solve the technical problem in the prior art that for the case that the overall volume of the surface flow wetland is small, the hydraulic retention time is short, resulting in poor effect of the wetland on river water treatment.

[0007] To achieve the above-mentioned purpose, the technical solution adopted by the present application is to provide a water quality maintaining system based on a composite wetland system suitable for low temperature, which comprises a pre-deposition ecological pond, a horizontal subsurface flow wetland and a multi-pond system connected in sequence, the pre-deposition ecological pond has a water inlet, the multi-pond system has a water outlet, the water flow path in the horizontal subsurface flow wetland is in a multi-segment curved shape, and the multi-pond system has at least two interconnected submerged plant ponds.

[0008] The front pre-deposition ecological pond is provided with a gate body with a gate opening at the water inlet, a gate and a filtering device are arranged in the gate body in a lifting manner, a driving assembly is arranged in the gate body for driving the gate and the filtering device to move in opposite directions, and the gate body is provided with a containing groove at the bottom for the gate and the filtering device to descend; when the gate body is located in the containing groove, the filtering device is located at the gate opening of the gate body, and the filtering device is used for filtering the water passing through the gate body.

[0009] In combination with the above technical solution, in a possible implementation manner, the filtering device comprises a lifting shell, a filtering net bag, an adsorption plate layer, a fixing assembly and a connection switching assembly; the lifting shell is slidingly arranged in the gate body and connected with the driving assembly; the lifting shell is a porous structure, the filtering net bag and the adsorption plate layer are slidingly arranged in the lifting shell, and the filtering net bag is located on the side of the adsorption plate layer facing the water flow; the fixing assembly is arranged in the filtering net bag and used for connecting the lifting shell; the connection switching assembly is arranged between the filtering net bag and the adsorption plate layer, and is used for disconnecting the connection between the fixing assembly and the lifting shell, and fixing or disconnecting the filtering net bag and the adsorption plate layer.

[0010] In combination with the above technical solution, in a possible implementation manner, the fixing assembly comprises an elastic member and a fixing plate, fixing grooves are formed on both sides of the filtering net bag, the elastic member is arranged in the fixing groove, and the fixing plate is slidingly arranged at the opening of the fixing groove and connected with the elastic member; a clamping groove communicated with the fixing groove is formed in the inner wall of the lifting shell, and the fixing plate is located in the fixing groove and the clamping groove at the same time when the elastic member is in a natural state.

[0011] In combination with the above technical solution, in a possible implementation manner, the connection switching assembly comprises a lifting rod, a first inclined block, a second inclined block, a connecting block and a self-driving member; a lifting groove is formed in the lifting shell and used for slidingly arranging the lifting rod, and a pressing hole is formed in the fixing plate and used for penetrating the lifting rod; the first inclined block and the second inclined block are fixed on one side of the lifting rod, and the first inclined block and the second inclined block are arranged in a stepped manner; a first movable groove is formed in the side of the adsorption plate layer, and a second movable groove is formed on one side of the fixing groove; the connecting block is slidingly arranged in the first movable groove; the self-driving member is arranged between the fixing plate and the connecting block, and is used for driving the connecting block to be inserted into or slid out of the second movable groove.

[0012] When the first inclined block is inserted into the pressing hole, the fixing plate is completely located in the fixing groove, and the connecting block is located in the first movable groove and the second movable groove at the same time; when the second inclined block is inserted into the pressing hole, the self-driving member drives the connecting block to be separated from the second movable groove.

[0013] In combination with the above technical solution, in a possible implementation manner, the self-driving member comprises first magnetic blocks and second magnetic blocks, the first magnetic blocks and the second magnetic blocks are fixedly embedded on one side of the fixed plate facing the connecting block, the first magnetic blocks are also fixed on the end of the connecting block facing the fixed slot, the two first magnetic blocks are attracted to each other, and the first magnetic blocks and the second magnetic blocks are repelled to each other.

[0014] In combination with the above technical solution, in a possible implementation manner, before the first inclined block is inserted into the extrusion hole, the two first magnetic blocks are attached to each other, and the connecting block is located in the first movable slot and the second movable slot at the same time; after the first inclined block is inserted into the extrusion hole, the fixed plate is separated from the clamping slot, and the two first magnetic blocks are still attached to each other; after the second inclined block is inserted into the extrusion hole, the second magnetic block moves to a position opposite to the connecting block, and the connecting block and the first magnetic blocks thereon are all slid into the first movable slot.

[0015] In combination with the above technical solution, in a possible implementation manner, a plurality of arc-shaped grooves are arranged on one side of the first inclined block and the second inclined block facing the elastic member in a vertical direction, and an arc-shaped protrusion for being inserted into the arc-shaped groove is fixed on the side wall of the extrusion hole close to the elastic member.

[0016] In combination with the above technical solution, in a possible implementation manner, a supporting plate is rotationally arranged at the bottom of the filter mesh pocket, and a hanging rope is connected between the supporting plate and the filter mesh pocket; a positioning assembly is arranged between the supporting plate and the filter mesh pocket, and the positioning assembly is used for fixing the supporting plate in a storage state in the filter mesh pocket; a one-way mechanism is arranged between the supporting plate rotation shaft and the filter mesh pocket, and the one-way mechanism is used for limiting the supporting plate from being upwardly stored; and a release assembly is arranged between the filter mesh pocket and the gate, and the release assembly is used for releasing the restriction of the positioning assembly and the one-way mechanism on the supporting plate when the gate is lifted.

[0017] In combination with the above technical solution, in a possible implementation manner, the positioning assembly comprises a positioning spring and a positioning block, positioning grooves are arranged on both sides of the supporting plate, the positioning spring is arranged in the positioning groove, the positioning block is slidingly arranged at the opening of the positioning groove and connected with the positioning spring; a positioning hole for communicating the positioning groove is arranged on the inner wall of the filter mesh pocket; one side of the positioning block facing the filter mesh pocket is arranged in an inclined manner, the positioning block is inserted into the positioning hole when the gate is lifted to upwardly store the supporting plate; and the release assembly is used for ejecting the positioning block from the positioning hole.

[0018] In combination with the above technical solution, in a possible implementation manner, the one-way mechanism comprises a ratchet wheel, a pawl and a moving frame, the ratchet wheel is coaxially fixed at both ends of the tray shaft, the pawl is arranged on the moving frame and engaged with the corresponding ratchet wheel, and the moving frame is slidingly arranged in the filter screen pocket; when the ratchet wheel is engaged with the pawl, the tray cannot be upwardly rotated for storage; and the releasing assembly is used to drive the moving frame to move, so that the pawl is separated from the corresponding ratchet wheel.

[0019] In combination with the above technical solution, in a possible implementation manner, the releasing assembly comprises a push plate and a push block, the gate is located at one side of the filter screen pocket with the tray, the push plate is vertically fixed at one side of the gate facing the filter screen pocket, the push plate is located at a position close to the top of the gate and vertically opposite to the moving frame, and the top surface and the bottom surface of the push plate are both provided with inclined surfaces for extruding the moving frame towards the positioning block; the push block is fixed at one side of the moving frame facing the positioning block, and when the moving frame is extruded by the push plate, the push block is inserted into the positioning hole and the positioning block is ejected from the positioning hole.

[0020] The water quality maintaining system based on the composite wetland system suitable for low temperature provided by the present application has the following beneficial effects: compared with the prior art, the water level in the wetland can be controlled through the gate body and the gate, when the gate is in the storage state, the filter device can intercept and filter garbage and other objects entering the pre-deposition ecological pond, the pre-deposition ecological pond can preliminarily deposit the water entering the system and remove large-particle impurities, the multi-section curved water flow path of the horizontal subsurface flow wetland can increase the residence time of the water body and improve the treatment effect of the wetland on the river water, the plurality of interconnected submerged plant ponds in the multi-pond system further improve the water quality by using the purification effect of plants, and finally the water quality purification function of plants and microorganisms is fully exerted, the hydraulic residence time is greatly increased, and the wetland water quality treatment effect is improved. BRIEF DESCRIPTION OF DRAWINGS

[0021] In order to more clearly illustrate the technical solutions in the embodiments of the present application, the following will briefly introduce the drawings needed to be used in the embodiments or the prior art description. Obviously, the drawings in the following description are only some embodiments of the present application, and other drawings can be obtained by those skilled in the art without creative labor.

[0022] Figure 1 A plan view of the water quality maintaining system based on the composite wetland system suitable for low temperature provided by the present application is provided.

[0023] Figure 2 A structural view of the filter device provided by the present application is provided. Figure 1 ;

[0024] Figure 3 Structure diagram of the filtering device provided for the embodiment of the present application Figure 2 ;

[0025] Figure 4 Transverse sectional view of the fixing assembly and the connection switching assembly provided for the embodiment of the present application

[0026] Figure 5 Structure diagram of the fixing assembly and the connection switching assembly provided for the embodiment of the present application

[0027] Figure 6 Vertical sectional view of the supporting plate and the one-way mechanism provided for the embodiment of the present application

[0028] Figure 7 Transverse sectional view of the positioning assembly and the releasing assembly provided for the embodiment of the present application

[0029] Figure 8 Structure diagram of the gate and the push plate provided for the embodiment of the present application

[0030] In the drawings, various reference signs are as follows:

[0031] 1, pre-sedimentation ecological pond; 11, water inlet; 2, horizontal subsurface flow wetland; 3, multi-pond system; 31, water outlet; 4, gate body; 41, containing groove; 5, gate; 6, filtering device; 61, lifting shell; 611, clamping groove; 612, lifting groove; 62, filter bag; 621, fixing groove; 622, second movable groove; 623, supporting plate; 6231, positioning groove; 624, lifting rope; 625, positioning hole; 63, adsorption plate layer; 631, first movable groove; 64, fixing assembly; 641, elastic member; 642, fixing plate; 6421, extrusion hole; 65, connection switching assembly; 651, lifting rod; 652, first inclined block; 6521, arc-shaped groove; 653, second inclined block; 654, connecting block; 655, self-driving member; 6551, first magnetic block; 6552, second magnetic block; 7, driving assembly; 71, rack; 72, gear; 73, driving motor; 8, positioning assembly; 81, positioning spring; 82, positioning block; 9, one-way mechanism; 91, ratchet wheel; 92, pawl; 93, moving frame; 10, releasing assembly; 101, push plate; 102, push block. DETAILED DESCRIPTION

[0032] In order to make the technical problems, technical solutions and beneficial effects of the present application clearer, further detailed description will be given below in combination with the drawings and examples. It should be understood that the described examples are only a part of the examples of the present application, rather than all the examples. The specific examples described herein are only used to explain the present application, and are not used to limit the present application. Based on the examples in the present application, all other examples obtained by those skilled in the art without creative labor fall within the scope of protection of the present application.

[0033] It should be further pointed out that the drawings and embodiments of the present application mainly describe and explain the concept of the present application. On the basis of the concept, the specific forms and settings of some connection relationships, position relationships, power mechanisms, power supply systems and control systems may not be completely described, but those skilled in the art can realize the above-mentioned specific forms and settings by using well-known ways on the premise of understanding the concept of the present application.

[0034] The terms "first", "second" are only used for description purposes, and cannot be understood as indicating or implying relative importance or implicitly indicating the number of the indicated technical features. Therefore, the features defined with "first", "second" can explicitly or implicitly include one or more of the features. In the description of the present application, the meaning of "multiple" is two or more, and the meaning of "several" is one or more, unless otherwise explicitly and specifically limited.

[0035] Now a water quality maintaining system based on a composite wetland system suitable for low temperature is described.

[0036] As shown in Figure 1 An embodiment of the present application provides a water quality maintaining system based on a composite wetland system suitable for low temperature, which comprises a pre-deposition ecological pond 1, a horizontal subsurface flow wetland 2 and a multi-pond system 3 connected in sequence, the pre-deposition ecological pond 1 has a water inlet 11, the multi-pond system 3 has a water outlet 31, the water flow path in the horizontal subsurface flow wetland 2 is in a multi-segment curved shape, and the multi-pond system 3 has at least two submerged plant ponds connected with each other.

[0037] As shown in Figure 2 and Figure 3 The water inlet 11 of the pre-deposition ecological pond 1 is provided with a gate body 4 with a gate opening, a gate 5 and a filtering device 6 are arranged in the gate body 4 in a lifting manner, a driving assembly 7 is arranged in the gate body 4 for driving the gate 5 and the filtering device 6 to move in opposite directions, and the gate body 4 has a containing groove 41 at the bottom for the gate 5 and the filtering device 6 to descend; when the gate body 4 is located in the containing groove 41, the filtering device 6 is located at the gate opening of the gate body 4, and the filtering device 6 is used for filtering the water passing through the gate body 4.

[0038] Specifically, the water depth and plant distribution in different submersed plant ponds in the multi-pond system 3 are different, forming a landscape closer to the natural conditions, and increasing the animal habitat range and the diversity of animals and plants in the wetland.

[0039] The water quality maintaining system based on the composite wetland system provided by the embodiment is suitable for low temperature, and compared with the prior art, the water level in the wetland can be controlled through the gate body 4 and the gate 5. When the gate 5 is in the storage state, the filtering device 6 can intercept and filter garbage and other objects in the river water entering the pre-deposition ecological pond 1. The pre-deposition ecological pond 1 can preliminarily deposit the water entering the system and remove large-particle impurities. The multi-section curved water flow path of the horizontal subsurface flow wetland 2 can increase the residence time of the water body and improve the treatment effect of the wetland on the river water. The multiple submersed plant ponds in the multi-pond system 3 further improve the water quality by using the purification effect of plants, and finally fully play the water quality purification function of plants and microorganisms, greatly increase the hydraulic retention time, and improve the wetland water quality treatment effect.

[0040] As Figures 3 to 4 Based on the above embodiment, the present application provides a specific implementation as follows:

[0041] The filtering device 6 comprises a lifting shell 61, a filter net bag 62, an adsorption plate layer 63, a fixing assembly 64 and a connection switching assembly 65. The lifting shell 61 is slidingly arranged in the gate body 4 and connected with the driving assembly 7. The lifting shell 61 is a porous structure. The filter net bag 62 and the adsorption plate layer 63 are slidingly lifted in the lifting shell 61, and the filter net bag 62 is located on the side of the adsorption plate layer 63 facing the water flow. The fixing assembly 64 is arranged in the filter net bag 62 and used to connect the lifting shell 61. The connection switching assembly 65 is arranged between the filter net bag 62 and the adsorption plate layer 63, and is used to disconnect the connection between the fixing assembly 64 and the lifting shell 61, and to fix or disconnect the filter net bag 62 and the adsorption plate layer 63.

[0042] Specifically, the adsorption plate layer 63 is a honeycomb activated carbon plate, and an annular frame is fixed around the adsorption plate layer 63 to realize the lifting in the lifting shell 61.

[0043] The filter net bag 62 in the lifting shell 61 can preliminarily intercept and filter the water body, and the adsorption plate layer 63 can adsorb impurities and harmful substances in the water, thereby improving the purification effect of the water body. When the filter net bag 62 and the adsorption plate layer 63 need to be cleaned or maintained, the connection switching assembly 65 can be used to disconnect the connection between the fixing assembly 64 and the lifting shell 61, and the filter net bag 62 and the adsorption plate layer 63 can be fixed to each other, so that the two can be taken out from the lifting shell 61 together.

[0044] Since the cleaning or maintenance frequency of the filter screen bag 62 is higher than that of the adsorption plate layer 63, the fixing or unfixing between the filter screen bag 62 and the adsorption plate layer 63 can be carried out through the connection switching assembly 65 according to actual conditions, so as to realize the taking out of only the filter screen bag 62 or the taking out of both.

[0045] As shown in Figures 4 to 5 The present application provides a specific embodiment based on the above-mentioned embodiment as follows:

[0046] The fixing assembly 64 comprises an elastic member 641 and a fixing plate 642, the filter screen bag 62 is provided with a fixing groove 621 on both sides, the elastic member 641 is arranged in the fixing groove 621, and the fixing plate 642 is slidingly arranged at the opening of the fixing groove 621 and connected with the elastic member 641; the inner side wall of the lifting shell 61 is provided with a clamping groove 611 communicated with the fixing groove 621, the fixing plate 642 is located in the fixing groove 621 and the clamping groove 611 at the same time when the elastic member 641 is in a natural state, and the connection switching assembly 65 is used to drive the fixing plate 642 to completely slide into the fixing groove 621.

[0047] Specifically, the elastic member 641 is a spring, one end of the elastic member 641 is connected with the inner wall of the fixing groove 621, and the other end of the elastic member 641 is connected with the fixing plate 642. The bottom surface of the part of the fixing plate 642 inserted into the clamping groove 611 is inclinedly arranged, so as to facilitate the convenience when the filter screen bag 62 is inserted downward into the lifting shell 61.

[0048] When the filter screen bag 62 is disassembled, the fixing plate 642 is driven into the fixing groove 621 through the connection switching assembly 65, so that the filter screen bag 62 can be directly hung out upward. When the filter screen bag 62 is installed, the filter screen bag 62 is directly inserted into the lifting shell 61, the inclined surface of the outer end of the fixing plate 642 is extruded and slides into the fixing groove 621 until the filter screen bag 62 is completely inserted, the fixing groove 621 is communicated with the corresponding clamping groove 611, the elastic member 641 drives the end of the fixing plate 642 to be inserted into the clamping groove 611, and the automatic fixing of the filter screen bag 62 is realized.

[0049] As shown in Figures 4 to 5 The present application provides a specific embodiment based on the above-mentioned embodiment as follows:

[0050] The connection switching assembly 65 comprises a lifting rod 651, a first inclined block 652, a second inclined block 653, a connecting block 654 and a self-driving part 655; the lifting rod 651 is slidably arranged in a lifting groove 612 formed in the lifting shell 61, and the top end of the lifting rod 651 is always located above the lifting groove 612; a pressing hole 6421 is formed in the fixed plate 642 and the lifting rod 651 penetrates through the pressing hole 6421; the first inclined block 652 and the second inclined block 653 are fixed on one side of the lifting rod 651, and the first inclined block 652 and the second inclined block 653 both have inclined surfaces for pressing the fixed plate 642 and are arranged in a stepped manner, and the second inclined block 653 is located on the side of the first inclined block 652 close to the elastic part 641.

[0051] A first movable groove 631 is formed in the side of the adsorption plate layer 63, and a second movable groove 622 is formed in one side of the fixed groove 621 and is communicated with the first movable groove 631; the connecting block 654 is slidably arranged in the first movable groove 631; the self-driving part 655 is arranged between the fixed plate 642 and the connecting block 654, and the self-driving part 655 is used to drive the connecting block 654 to be inserted into or slid out of the second movable groove 622.

[0052] The first inclined block 652 is inserted into the pressing hole 6421, the fixed plate 642 is completely located in the fixed groove 621, and the connecting block 654 is simultaneously located in the first movable groove 631 and the second movable groove 622; when the second inclined block 653 is inserted into the pressing hole 6421, the self-driving part 655 drives the connecting block 654 to be separated from the second movable groove 622.

[0053] When it is needed to simultaneously detach the filter screen pocket 62 and the adsorption plate layer 63, the lifting rods 651 on both sides of the filter screen pocket 62 are slid upward, the inclined surface of the first inclined block 652 is pressed against the pressing hole 6421, the fixed plate 642 is completely inserted into the fixed groove 621, the inner wall of the pressing hole 6421 is tightly pressed against the side surface of the first inclined block 652, and the lifting rod 651 remains in position; at this time, the connecting block 654 is simultaneously located in the filter screen pocket 62 and the adsorption plate layer 63, and when the filter screen pocket 62 is lifted upward, the adsorption plate layer 63 is slid upward together with the filter screen pocket 62, and the detachment efficiency of the filter screen pocket 62 and the adsorption plate layer 63 is improved.

[0054] When only the filter screen pocket 62 is detached, the first inclined block 652 is inserted into the pressing hole 6421 after the lifting rod 651 is pulled upward, the second inclined block 653 is inserted into the pressing hole 6421 after the lifting rod 651 is continuously pulled, the fixed plate 642 is still completely located in the fixed groove 621 at this time, the self-driving part 655 drives the connecting block 654 to be separated from the second movable groove 622, and the filter screen pocket 62 can be individually lifted out.

[0055] As shown in FIG. 1, the filter screen pocket 62 is detachably arranged in the fixed groove 621 of the fixed plate 642, and the adsorption plate layer 63 is detachably arranged in the first movable groove 631 of the connecting block 654. Figures 4 to 5 As shown in FIG. 1, the filter screen pocket 62 is detachably arranged in the fixed groove 621 of the fixed plate 642, and the adsorption plate layer 63 is detachably arranged in the first movable groove 631 of the connecting block 654.

[0056] The self-driving part 655 comprises a first magnetic block 6551 and a second magnetic block 6552, which are fixedly embedded on one side of the fixed plate 642 facing the connecting block 654, and the first magnetic block 6551 is also fixed on the end of the connecting block 654 facing the fixed groove 621, the two first magnetic blocks 6551 are attracted to each other, and the first magnetic block 6551 and the second magnetic block 6552 are repelled.

[0057] Wherein, before the first inclined block 652 is inserted into the extrusion hole 6421, the two first magnetic blocks 6551 are in close contact with each other, and the connecting block 654 is located in the first movable groove 631 and the second movable groove 622 at the same time; after the first inclined block 652 is inserted into the extrusion hole 6421, the fixed plate 642 is separated from the clamping groove 611, and the two first magnetic blocks 6551 are still in close contact with each other; after the second inclined block 653 is inserted into the extrusion hole 6421, the second magnetic block 6552 moves to a position opposite to the connecting block 654, and the connecting block 654 and the first magnetic block 6551 thereon are all slid into the first movable groove 631.

[0058] When it is needed to simultaneously detach the filter screen pocket 62 and the adsorption plate layer 63, the lifting rod 651 is pulled upward to make the first inclined block 652 inserted into the extrusion hole 6421, at this time, the first magnetic block 6551 on the fixed plate 642 is still in close contact with the first magnetic block 6551 on the connecting block 654 in a tightly attracted state, and the filter screen pocket 62 and the adsorption plate layer 63 can be directly lifted out together.

[0059] When only the filter screen pocket 62 is detached, the lifting rod 651 is continuously pulled upward to make the second inclined block 653 inserted into the extrusion hole 6421, at this time, the second magnetic block 6552 on the fixed plate 642 is opposite to the first magnetic block 6551 on the connecting block 654, and the first magnetic block 6551 on the connecting block 654 is driven to separate from the second movable groove 622 under repulsion, thereby improving the operation convenience of the state switching between the filter screen pocket 62 and the adsorption plate layer 63.

[0060] As shown in Figure 5 The present application provides a specific implementation mode based on the above implementation mode, and the specific implementation mode is as follows:

[0061] The side of the first inclined block 652 and the second inclined block 653 facing the elastic member 641 is arranged with a plurality of arc-shaped grooves 6521 in the vertical direction, and an arc-shaped protrusion for being inserted into the arc-shaped groove 6521 is fixed on the side wall of the extrusion hole 6421 close to the elastic member 641.

[0062] After the first inclined block 652 or the second inclined block 653 is inserted into the extrusion hole 6421, the arc-shaped protrusion in the extrusion hole 6421 can be inserted into the corresponding arc-shaped groove 6521, and the arc-shaped protrusion is tightly pressed against the arc-shaped groove 6521 under the compression of the elastic member 641 in the compression state, thereby further improving the position stability of the lifting rod 651.

[0063] As Figure 3 , Figure 6 and Figure 7 shown, the present application provides a specific implementation based on the above embodiments as follows:

[0064] The bottom of the filter net bag 62 is rotationally provided with a supporting plate 623, and a lifting rope 624 is connected between the supporting plate 623 and the filter net bag 62; a positioning assembly 8 is arranged between the supporting plate 623 and the filter net bag 62, and the positioning assembly 8 is used to fix the supporting plate 623 in a storage state in the filter net bag 62; a one-way mechanism 9 is arranged between the rotation shaft of the supporting plate 623 and the filter net bag 62, and the one-way mechanism 9 is used to limit the supporting plate 623 from being upwardly stored; a release assembly 10 is arranged between the filter net bag 62 and the gate 5, and the release assembly 10 is used to release the restriction of the positioning assembly 8 and the one-way mechanism 9 on the supporting plate 623 when the gate 5 is lifted; the gate 5 is located on the side of the filter net bag 62 with the supporting plate 623, and the supporting plate 623 is located above the gate 5 when it is in a working state.

[0065] The supporting plate 623 can support the objects such as garbage intercepted by the filter net bag 62, so that the garbage intercepted by the filter net bag 62 can be taken out as much as possible when the filter net bag 62 is upwardly slid and disassembled; the lifting rope 624 limits the maximum rotation angle of the supporting plate 623 outward, and cooperates with the one-way mechanism 9 to improve the stability of the supporting plate 623 in the working state.

[0066] When it is necessary to control the water level of the wetland, the gate 5 is upwardly lifted and the filter device 6 is downwardly slid, at this time the release assembly 10 releases the restriction of the one-way mechanism 9, the gate 5 upwardly pushes the supporting plate 623 to be stored in the filter net bag 62, until the top end of the gate 5 passes through the supporting plate 623, at this time the positioning assembly 8 automatically fixes the supporting plate 623 in the storage state in the filter net bag 62, so as to avoid interference with the further downward movement of the gate 5.

[0067] After the water level of the wetland does not need to be controlled, the gate 5 is downwardly lowered and the filter device 6 is upwardly slid, at this time the bottom end of the gate 5 first passes through the position of the supporting plate 623, when the top end of the gate 5 is about to slide below the supporting plate 623, the release assembly 10 releases the restriction of the positioning assembly 8 on the supporting plate 623, so that the supporting plate 623 is outwardly rotated to the working state by its own gravity, and at the same time the one-way mechanism 9 again restricts the supporting plate 623, thereby improving the state switching efficiency of the supporting plate 623.

[0068] Further, in order to improve the smoothness of the supporting plate 623 outwardly rotating to the working state by its own gravity, the storage state of the supporting plate 623 in the filter housing is obliquely arranged, at this time the top end of the supporting plate 623 is still closer to the gate 5 direction than the rotation shaft of the supporting plate 623.

[0069] AsFigure 7 As shown, based on the above embodiments, the present invention provides another specific embodiment as follows:

[0070] The positioning component 8 includes a positioning spring 81 and a positioning block 82. The support plate 623 has positioning grooves 6231 on both sides. The positioning spring 81 is disposed in the positioning groove 6231. The positioning block 82 is slidably disposed at the opening of the positioning groove 6231 and connected to the positioning spring 81. The inner side wall of the filter bag 62 has a positioning hole 625 for communicating with the positioning groove 6231. The positioning block 82 is tilted towards one side of the filter bag 62. When the gate 5 rises and pushes the support plate 623 upward to rotate and store it, the positioning block 82 is inserted into the positioning hole 625. The release component 10 is used to push the positioning block 82 out of the positioning hole 625.

[0071] When the gate 5 rises and pushes the support plate 623 to rotate into the filter housing, the inclined surface of the positioning block 82 is squeezed and completely enters the positioning groove 6231 until the positioning groove 6231 is connected to the positioning hole 625. The elastic force of the positioning spring 81 drives the positioning block 82 to insert into the positioning hole 625, which improves the convenience of fixing the support plate 623 in the storage state.

[0072] like Figures 6 to 7 As shown, based on the above embodiments, the present invention provides another specific embodiment as follows:

[0073] The one-way mechanism 9 includes a ratchet 91, a pawl 92, and a movable frame 93. The ratchet 91 is coaxially fixed at both ends of the pivot of the tray 623. The pawl 92 is mounted on the movable frame 93 and engages with the corresponding ratchet 91. The movable frame 93 is slidably mounted inside the filter bag 62. When the ratchet 91 and the pawl 92 are engaged, the tray 623 cannot be rotated upwards for storage. The release component 10 is used to move the movable frame 93 so that the pawl 92 is separated from the corresponding ratchet 91.

[0074] When the pallet 623 is in the working state, the ratchet 91 and the pawl 92 engage, preventing the pallet 623 from rotating upwards, which can cooperate with the lifting rope 624 to improve the working stability of the pallet 623.

[0075] like Figures 6 to 8 As shown, based on the above embodiments, the present invention provides another specific embodiment as follows:

[0076] The releasing assembly 10 comprises a push plate 101 and a push block 102, the push plate 101 is vertically fixed on the side of the gate 5 facing the filter screen pocket 62, the push plate 101 is located at the position of the gate 5 close to the top and vertically opposite to the moving frame 93, the top surface and the bottom surface of the push plate 101 are both provided with inclined surfaces for extruding the moving frame 93 towards the positioning block 82, the push block 102 is fixed on the side of the moving frame 93 facing the positioning block 82, the moving frame 93 is extruded by the push plate 101 and drives the push block 102 to insert into the positioning hole 625, and the positioning block 82 is pushed out of the positioning hole 625.

[0077] Specifically, the length of the push plate 101 is not greater than half of the height of the gate 5. A spring can be arranged between the moving frame 93 and the inner wall of the filter screen pocket 62, when the spring is in a natural state, the pawl 92 and the ratchet wheel 91 are in the engaged state, which can improve the engagement stability of the pawl 92 and the ratchet wheel 91, and can improve the resetting efficiency of the moving frame 93 and the push block 102 when cooperating with the positioning spring 81 subsequently.

[0078] Before the gate 5 lifts the supporting plate 623, the top end of the push plate 101 on the inner side of the gate 5 first extrudes the moving frame 93, so that the moving frame 93 drives the pawl 92 to separate from the ratchet wheel 91, and at the same time, the push block 102 inserts into the positioning hole 625, at this time, the side surface of the push plate 101 keeps in contact with the moving frame 93, and the end surface of the push block 102 keeps flush with the opening end surface of the positioning hole 625.

[0079] The gate 5 continues to rise and drives the supporting plate 623 to rotate to the storage state, at this time, the positioning groove 6231 is opposite to the positioning hole 625, after the push plate 101 is separated from the moving frame 93, the end of the positioning block 82 is inserted into the positioning hole 625 under the elastic force of the positioning spring 81, and the push block 102 and the moving frame 93 are pushed to reset, so as to facilitate the subsequent work of the supporting plate 623.

[0080] When the gate 5 is not required to be controlled to descend without controlling the water level, the inclined surface at the bottom end of the push plate 101 extrudes the moving frame 93 again, the moving frame 93 drives the push block 102 to insert into the positioning hole 625, and the positioning block 82 is pushed out of the positioning hole 625 until the top end of the gate 5 descends below the supporting plate 623, the push plate 101 is separated from the moving frame 93, the supporting plate 623 rotates outward to the working state by relying on the gravity, and at the same time, the spring on the moving frame 93 drives the moving frame 93 and the push block 102 to reset, so that the pawl 92 is engaged with the ratchet wheel 91 again, the working stability of the supporting plate 623 is improved, the overall operation is convenient, and the process is stable.

[0081] As shown in FIG. Figure 3 The specific embodiment provided by the present application on the basis of the above-mentioned embodiment is as follows:

[0082] The driving assembly 7 is shared by two groups and is located on both sides of the gate body 4, the driving assembly 7 comprises a rack 71, a gear 72 and a driving motor 73, the rack 71 in each driving assembly 7 has two, the lifting shell 61 and the gate 5 both have sliding plates, the two racks 71 are vertically fixed on the inner sides of the sliding plates opposite to each other of the lifting shell 61 and the gate 5, the gear 72 is rotationally connected in the gate body 4 and is engaged between the two racks 71, and the driving motor 73 is installed in the gate body 4, and the output shaft of the driving motor 73 is coaxially connected with the gear 72.

[0083] When the position of the filtering device 6 and the gate 5 needs to be replaced, the driving motor 73 is started to drive the gear 72 to rotate, and the gear 72 drives the two racks 71 to respectively ascend and descend, thereby improving the position replacement efficiency of the filtering device 6 and the gate 5.

[0084] In the preliminary work, the change of pollutants after the water body is clarified by adding PAC flocculant is observed. However, considering that PAC itself will react with the positive phosphate in TP to achieve phosphorus removal, it will cause interference in judging the contribution of suspended solids to total phosphorus. Therefore, further tests on water samples are needed to determine the contribution of suspended solids to the rising degree of water pollutants.

[0085] Figure 1 For a single wetland system, the present application has at least four wetland systems at the same river and a drainage pond connected to the end of the wetland system. In this embodiment, the water samples before and after filtration are extracted and compared through Table 1 for the total inlet and outlet of the upstream and downstream of the river, the outlet of the multi-pond system 3 in the four-zone wetland system, the two points of the submerged plant pond in the multi-pond system 3, and the drainage pond.

[0086] Table 1, water quality comparison before and after filtration (unit: mg / L)

[0087]

[0088] From the above table, it can be seen that the total phosphorus index is reduced after the water sample is filtered. This shows that the suspended solids contribute to the main total phosphorus, that is, the increase of suspended solids is significantly related to the increase of total phosphorus. Therefore, by improving the easy-suspending property of the substrate with the substrate improver and planting the submerged plants with developed root systems and small disturbance from wind and waves, the water quality can be significantly improved.

[0089] The above is only a preferred embodiment of the present application and is not used to limit the present application. Any modification, equivalent replacement and improvement made within the spirit and principle of the present application shall be included in the protection scope of the present application.

[0090] It is also important to note that the term "or" as used herein is intended to mean an inclusive "or," such that "A or B" means any or all of the items listed with no options required to be selected with the item. Further, the terms "comprise," "comprising," "include," "including," and the like are to be construed in an inclusive sense as opposed to an exclusive or exhaustive sense that may be implied by use of these terms in some instances. As used herein, the terms "program" and "software" are meant to include, but are not limited to, routines, applications, computer programs, computer code, computer instructions, and the like.

[0091] The foregoing description, for purposes of clarity, describes the above-described embodiments in connection with separate components. It is to be understood that the described components can be combined or separated into different components. It is to be understood that the described components can be implemented in hardware, software, firmware or a combination thereof. It is to be further understood that the described components can be implemented in a computer program product having a computer-readable medium. The computer-readable medium having instructions for carrying out the above-described embodiments.

Claims

1. A water quality maintenance system based on a composite wetland system suitable for low temperature, characterized by, The application relates to a water purification system, which comprises a front-positioned sedimentation ecological pond (1), a horizontal subsurface flow wetland (2) and a multi-pond system (3) connected in sequence, the front-positioned sedimentation ecological pond (1) is provided with a water inlet (11), the multi-pond system (3) is provided with a water outlet (31), the water flow path in the horizontal subsurface flow wetland (2) is in a multi-segment curved shape, and the multi-pond system (3) is provided with at least two submerged plant ponds connected with each other. The water inlet (11) of the front-positioned sedimentation ecological pond (1) is provided with a gate body (4) with a gate opening, a gate (5) and a filtering device (6) are arranged in the gate body (4) in a lifting mode, a driving assembly (7) is arranged in the gate body (4) and used for driving the gate (5) and the filtering device (6) to move in opposite directions, and the gate body (4) is provided with a containing groove (41) at the bottom and used for containing the gate (5) and the filtering device (6) when the gate body (4) is located in the containing groove (41); the filtering device (6) is located at the gate opening of the gate body (4) and used for filtering water flowing through the gate body (4). The filtering device (6) comprises a lifting shell (61), a filtering net bag (62), an adsorption plate layer (63), a fixing assembly (64) and a connection switching assembly (65); the lifting shell (61) is arranged in the gate body (4) in a sliding mode and connected with the driving assembly (7); the lifting shell (61) is a porous structure, the filtering net bag (62) and the adsorption plate layer (63) are arranged in the lifting shell (61) in a sliding lifting mode; the fixing assembly (64) is arranged in the filtering net bag (62) and used for connecting the lifting shell (61); the connection switching assembly (65) is arranged between the filtering net bag (62) and the adsorption plate layer (63) and used for disconnecting the fixing assembly (64) from the lifting shell (61) and fixing or disconnecting the filtering net bag (62) and the adsorption plate layer (63) from each other. The fixing assembly (64) comprises an elastic piece (641) and a fixing plate (642), the filtering net bag (62) is provided with a fixing groove (621) at both sides, the elastic piece (641) is arranged in the fixing groove (621), the fixing plate (642) is arranged at the opening of the fixing groove (621) in a sliding mode and connected with the elastic piece (641); a clamping groove (611) connected with the fixing groove (621) is formed in the inner wall of the lifting shell (61), and the fixing plate (642) is located in the fixing groove (621) and the clamping groove (611) simultaneously when the elastic piece (641) is in a natural state. The connection switching assembly (65) comprises a lifting rod (651), a first inclined block (652), a second inclined block (653), a connecting block (654) and a self-driving part (655); the lifting shell (61) is provided with a lifting groove (612) for sliding the lifting rod (651) therein; the fixed plate (642) is provided with a pressing hole (6421) for penetrating the lifting rod (651); the first inclined block (652) and the second inclined block (653) are fixed on one side of the lifting rod (651), and the first inclined block (652) and the second inclined block (653) are arranged in a stepped manner; the side of the adsorption plate layer (63) is provided with a first movable groove (631), and the side of the fixed groove (621) is provided with a second movable groove (622); the connecting block (654) is slidably arranged in the first movable groove (631); the self-driving part (655) is used for driving the connecting block (654) to insert or slide out of the second movable groove (622). Wherein, after the first inclined block (652) is inserted into the pressing hole (6421), the fixed plate (642) is completely located in the fixed groove (621), and the connecting block (654) is located in the first movable groove (631) and the second movable groove (622) at the same time; when the second inclined block (653) is inserted into the pressing hole (6421), the self-driving part (655) drives the connecting block (654) to separate from the second movable groove (622).

2. A water quality maintenance system based on a composite wetland system suitable for low temperature according to claim 1, characterized in that, The self-driving part (655) comprises a first magnetic block (6551) and a second magnetic block (6552), the first magnetic block (6551) and the second magnetic block (6552) are fixedly embedded on one side of the fixed plate (642) facing the connecting block (654), the first magnetic block (6551) is also fixed on the end of the connecting block (654) facing the fixed groove (621), the two first magnetic blocks (6551) are attracted to each other, and the first magnetic block (6551) and the second magnetic block (6552) repel each other; Wherein, before the first inclined block (652) is inserted into the pressing hole (6421), the two first magnetic blocks (6551) are attached to each other, and the connecting block (654) is located in the first movable groove (631) and the second movable groove (622) at the same time; after the first inclined block (652) is inserted into the pressing hole (6421), the fixed plate (642) is separated from the clamping groove (611), and the two first magnetic blocks (6551) are still attached to each other; after the second inclined block (653) is inserted into the pressing hole (6421), the second magnetic block (6552) moves to a position opposite to the connecting block (654), and the connecting block (654) and the first magnetic block (6551) thereon are all slid into the first movable groove (631).

3. The composite wetland system-based water quality maintenance system for low temperature according to claim 1, wherein The first inclined block (652) and the second inclined block (653) are arranged with a plurality of arc-shaped grooves (6521) on one side of the elastic member (641) in the vertical direction, and an arc-shaped protrusion for being inserted into the arc-shaped groove (6521) is fixed to the side wall of the extrusion hole (6421) close to the elastic member (641).

4. The composite wetland system-based water quality maintenance system for low temperature according to claim 1, wherein The bottom of the filter net bag (62) is rotationally provided with a supporting plate (623), a hanging rope (624) is connected between the supporting plate (623) and the filter net bag (62), a positioning assembly (8) is arranged between the supporting plate (623) and the filter net bag (62), and the positioning assembly (8) is used for fixing the supporting plate (623) in a storage state in the filter net bag (62); a one-way mechanism (9) is arranged between the rotation shaft of the supporting plate (623) and the filter net bag (62), and the one-way mechanism (9) is used for limiting the supporting plate (623) from being upwardly stored; and a releasing assembly (10) is arranged between the filter net bag (62) and the gate (5), and the releasing assembly (10) is used for releasing the restriction of the positioning assembly (8) and the one-way mechanism (9) on the supporting plate (623) when the gate (5) is lifted.

5. A composite wetland system based water quality maintenance system suitable for low temperature as claimed in claim 4 wherein, The positioning assembly (8) comprises a positioning spring (81) and a positioning block (82), positioning grooves (6231) are formed on both sides of the supporting plate (623), the positioning spring (81) is arranged in the positioning groove (6231), and the positioning block (82) is slidingly arranged at the opening of the positioning groove (6231) and connected with the positioning spring (81); a positioning hole (625) for communicating with the positioning groove (6231) is formed in the inner side wall of the filter net bag (62); the positioning block (82) is arranged in an inclined manner on the side of the filter net bag (62), and the positioning block (82) is inserted into the positioning hole (625) when the supporting plate (623) is upwardly stored under the action of the gate (5) rising; and the releasing assembly (10) is used for ejecting the positioning block (82) out of the positioning hole (625).

6. A composite wetland system based water quality maintenance system suitable for low temperature as claimed in claim 5 wherein, The one-way mechanism (9) comprises a ratchet wheel (91), a pawl (92) and a moving frame (93), the ratchet wheel (91) is coaxially fixed at both ends of the rotation shaft of the supporting plate (623), the pawl (92) is arranged on the moving frame (93) and engaged with the corresponding ratchet wheel (91), and the moving frame (93) is slidingly arranged in the filter net bag (62); when the ratchet wheel (91) is engaged with the pawl (92), the supporting plate (623) cannot be upwardly stored; and the releasing assembly (10) is used for moving the moving frame (93) so that the pawl (92) is separated from the corresponding ratchet wheel (91).

7. A composite wetland system based water quality maintenance system suitable for low temperature according to claim 6, wherein, The releasing assembly (10) comprises a push plate (101) and a push block (102), the gate (5) is located at one side of the filter screen pocket (62) with a supporting plate (623), the push plate (101) is vertically fixed at one side of the gate (5) facing the filter screen pocket (62), the push plate (101) is located at a position close to the top of the gate (5) and vertically opposite to the moving frame (93), the top surface and the bottom surface of the push plate (101) are both provided with inclined surfaces for extruding the moving frame (93) towards the positioning block (82); the push block (102) is fixed at one side of the moving frame (93) facing the positioning block (82), when the moving frame (93) is extruded by the push plate (101), the push block (102) is inserted into the positioning hole (625) and the positioning block (82) is pushed out of the positioning hole (625).

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