CN215049072U - Undercurrent constructed wetland gas back flushing device - Google Patents

Undercurrent constructed wetland gas back flushing device Download PDF

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Publication number
CN215049072U
CN215049072U CN202121222002.7U CN202121222002U CN215049072U CN 215049072 U CN215049072 U CN 215049072U CN 202121222002 U CN202121222002 U CN 202121222002U CN 215049072 U CN215049072 U CN 215049072U
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backwashing
packing layer
tank
jacking
mounting plate
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CN202121222002.7U
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王泽�
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Hebei Tiankun Environmental Protection Engineering Co ltd
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Hebei Tiankun Environmental Protection Engineering Co ltd
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Abstract

The utility model relates to a sewage treatment technical field provides a gaseous back flush unit of undercurrent constructed wetland, including the backwashing tank, and set up the packing layer at the backwashing tank, the water inlet of backwashing tank is located the packing layer top, the delivery port is located the below of packing layer up end, back flush unit still includes the controller, the blow off pipe, and set up at the backwashing tank and be located the climbing mechanism of packing layer below, climbing mechanism's controlled end and controller are connected, the packing layer has the lift degree of freedom with the help of climbing mechanism's flexible, the entrance point of blow off pipe is located the packing layer top with inside intercommunication and the intercommunication of backwashing tank, the exit end of blow off pipe extends to the backwashing tank outside. The lifting process of the jacking mechanism is controlled by the controller, so that the packing layer inside the backwashing tank slowly creeps, impurities and blockage among the packing are loosened, and the impurities and the blockage are discharged through the drain pipe under the action of water flow, and the problem of blockage of the packing layer can be effectively solved.

Description

Undercurrent constructed wetland gas back flushing device
Technical Field
The utility model relates to a sewage treatment technical field, it is specific, relate to a gaseous back flush unit of undercurrent constructed wetland.
Background
The artificial wetland has wide application in rural domestic sewage treatment, river treatment and the like. The subsurface flow constructed wetland mainly utilizes the physical, chemical and biological effects of a filler layer, microorganisms, plants and the like in the system to degrade ammonia nitrogen, total phosphorus, total nitrogen, COD and the like in the sewage. In the long-term operation process of the artificial wetland, the problem of blockage of the packing layer is caused by various factors such as the long-term accumulation of impurities in the sewage, the propagation and death of microorganisms, the root system of plants and the like.
At present, the countermeasure for treating the problem of filler blockage at home and abroad mainly comprises the following points:
firstly, pretreatment such as a grid, a sedimentation tank and the like is added, so that suspended solids in sewage are reduced;
secondly, stopping beds and taking turns, generally stopping the wetlands for a period of time for restitution abroad, but the stopping time is long, a plurality of parallel wetlands need to be established, and the cost is high;
the wetland surface layer filler is replaced, and the method can solve the problem of blockage, but has huge engineering quantity and long time;
fourthly, biological dredging fillers such as earthworms and the like are added, and the method is in a preliminary research stage;
applying bacteriostatic agent or lysozyme, which can inhibit the activity of microbes or kill them.
A backwashing device with simple structure and convenient operation is needed to solve the problem of blockage of the packing layer.
SUMMERY OF THE UTILITY MODEL
The utility model provides a gaseous back flush unit of undercurrent constructed wetland, simple structure, convenient operation can effectively solve the problem that the wetland packing layer blockked up.
The technical scheme of the utility model as follows: the utility model provides a gaseous back flush unit of undercurrent constructed wetland, includes the backwash groove and sets up the packing layer in the backwash groove, and the water inlet of backwash groove is located the packing layer top, the delivery port is located the below of packing layer up end, and the key lies in: the backwashing device further comprises a controller, a discharge pipe and a jacking mechanism which is arranged in the backwashing tank and is positioned below the packing layer, wherein the controlled end of the jacking mechanism is connected with the controller, the packing layer has a lifting degree of freedom by virtue of the stretching of the jacking mechanism, the inlet end of the discharge pipe is communicated with the inside of the backwashing tank and is positioned above the packing layer, and the outlet end of the discharge pipe extends to the outside of the backwashing tank.
The backwashing device also comprises aeration heads arranged in the backwashing tank and below the packing layer and an aeration pump arranged outside the backwashing tank, wherein the air inlets of all the aeration heads are connected with the aeration pump, the air outlets of all the aeration heads face the packing layer, and the controlled end of the aeration pump is connected with the controller.
The bottom plate of the backwashing tank is of a hollow structure, an air inlet pipe with one end communicated with the hollow structure of the bottom plate and the other end connected with the aeration pump is arranged on the side wall of the bottom plate, a group of mounting holes communicated with the hollow structure are formed in the top of the bottom plate, and an air inlet of the aeration head is in threaded connection with the mounting holes.
A one-way valve is arranged at the mounting hole of the back flushing groove.
All the jacking mechanisms are divided into at least two jacking groups, all the jacking groups are arranged along the width direction of the backwashing tank, all the jacking mechanisms of the same jacking group are arranged along the length direction of the backwashing tank, the lower end of each jacking mechanism is fixed with a positioning ring, the backwashing device also comprises a mounting plate, the length direction of the mounting plate is the same as the length direction of the backwashing tank, each mounting plate is sleeved on all the jacking mechanisms of the same jacking group by virtue of mounting holes formed in the mounting plate, the bottom of the mounting plate is provided with a positioning ring placing groove, positioning grooves which are vertically arranged are arranged on the inner wall of the backwashing tank and correspond to the two ends of the mounting plate, limiting rods which are detachably connected with the backwashing tank are arranged in the positioning grooves, the two ends of the mounting plate are respectively spliced with the positioning grooves at the corresponding ends and locked with the backwashing tank by virtue of the limiting rods positioned above the mounting plate, the limiting rod is positioned below the packing layer.
The bottom of the positioning groove is provided with a screw hole, one end of the limiting rod is in threaded connection with the screw hole, and the other end of the limiting rod extends to the upper part of the mounting plate.
The both ends of mounting panel all upwards buckle to extend to form the connecting portion of vertical setting, and the one end of connecting portion towards back flush tank inner wall is the dovetail structure, and the constant head tank is the dovetail, and the up end of connecting portion is located the below of packing layer up end and is located the top of climbing mechanism stiff end.
And a supporting diagonal rod is connected between the connecting part and the mounting plate.
The back washing device also comprises a water pump and a wastewater buffer pool, wherein the inlet end of the water pump is connected with the sewage discharge pipe, and the outlet end of the water pump is connected with the wastewater buffer pool.
The utility model discloses a theory of operation and beneficial effect do: set up climbing mechanism below the packing layer, set up the blow off pipe above the packing layer, when constructed wetland blockked up, the water inlet of backwash tank keeps intaking unchangeably, closes the delivery port and opens the blow off pipe, through the lift process of controller control climbing mechanism, make the inside packing layer of backwash tank carry out slow wriggling to it is not hard up to make impurity and the plug between the filler, under the effect of rivers, discharge through the blow off pipe, simple structure, convenient operation can effectively solve the problem that the packing layer blockked up.
Drawings
Fig. 1 is a front view of the present invention.
Fig. 2 is a top view of the middle aeration head and the jacking mechanism of the present invention.
Fig. 3 is a front view of the connection between the jacking mechanism and the back washing tank of the utility model.
Fig. 4 is a top view of the middle jacking mechanism and the back washing tank of the utility model.
Fig. 5 is a right side view of the middle jacking mechanism and the back washing tank of the utility model.
In the figure: 1. the device comprises a water inlet, 2, aquatic plants, 3, a water surface, 4, a packing layer, 5, an aeration head, 6, a jacking mechanism, 7, a water outlet, 8, a sewage discharge pipe, 9, a backwashing tank, 10, a positioning ring, 11, a mounting plate, 12, a positioning groove, 13, a limiting rod, 14, a connecting part, 15 and a supporting inclined rod.
Detailed Description
The present invention will be described in detail with reference to the accompanying drawings and specific embodiments.
In a specific embodiment, as shown in fig. 1 and 2, the gas backwashing device for the subsurface flow constructed wetland comprises a backwashing tank 9, a packing layer 4 arranged in the backwashing tank 9, a water inlet 1 of the backwashing tank 9 is positioned above the packing layer 4, a water outlet 7 is positioned below the upper end surface of the packing layer 4, the backwashing device further comprises a controller, a drain pipe 8 and a jacking mechanism 6 which is arranged in the backwashing tank 9 and below the packing layer 4, the controller is preferably a Programmable Logic Controller (PLC), the controlled end of the jacking mechanism 6 is connected with the controller, the packing layer 4 has a lifting freedom degree by virtue of the stretching of the jacking mechanism 6, the inlet end of the drain pipe 8 is communicated with the inside of the backwashing tank 9, the communicated part is positioned above the packing layer 4, and the outlet end of the drain pipe 8 extends to the outside of the backwashing tank 9.
As to the utility model discloses a further improvement, back washing unit still includes the aeration head 5 that sets up in back washing tank 9 and be located packing layer 4 below and sets up the aeration pump in back washing tank 9 outside, and all aeration head 5's air inlet all is connected with the aeration pump, and all aeration head 5's gas outlet all faces packing layer 4, and the controlled end and the controller of aeration pump are connected. As shown in figures 1 and 2, in the lifting process of the jacking mechanism 6, the aeration pump is opened, and impurities and blockage can be flushed from the packing layer 4 more conveniently through the dual functions of water flow and aeration, so that the flushing effect is better.
As right the utility model discloses a further improvement, the bottom plate of back flush tank 9 is hollow structure, is provided with the intake pipe that the hollow structure intercommunication of one end and bottom plate, the other end and aeration pump are connected on the lateral wall of bottom plate, and a set of mounting hole with the hollow structure intercommunication is seted up at the top of bottom plate, aeration head 5's air inlet and mounting hole threaded connection. Threaded connection, firm in connection is reliable, and easy dismounting is swift, labour saving and time saving. In order to improve the sealing effect, a sealing ring is arranged between the aeration head 5 and the air inlet of the backwashing tank 9.
As right the utility model discloses a further improvement is provided with the check valve in back flush tank 9's mounting hole department, and the check valve only allows the gas in the aeration pump to spout through aeration head 5, and effectively prevents waste water and impurity in back flush tank 9 and enter into in the intake pipe, can effectively prevent that the intake pipe from blockking up, can be according to actual need independent control moreover whether every aeration head 5 uses.
As right the utility model discloses a further improvement, all climbing mechanism 6 fall into two at least jacking groups, all jacking groups are arranged along the width direction of back-flush tank 9, all climbing mechanism 6 of same jacking group are arranged along the length direction of back-flush tank 9, every climbing mechanism 6's lower extreme all is fixed with holding ring 10, back-flush unit still includes mounting panel 11, mounting panel 11's length direction is the same with the length direction of back-flush tank 9, every mounting panel 11 all is that the mounting hole suit that sets up on it is on all climbing mechanism 6 of same jacking group and the holding ring standing groove has been seted up to mounting panel 11's bottom, all there is the constant head tank 12 of vertical setting with the corresponding position in mounting panel 11 both ends on back-flush tank 9 inner wall, be provided with in the constant head tank 12 and form the gag lever 13 of detachable connection with back-flush tank 9, the both ends of mounting panel 11 peg graft respectively with the gag lever 12 of corresponding end and with the help of being located mounting panel 11 top gag lever 13 and with the gag lever 13 and the bottom of the mounting panel 11 top The backwashing grooves 9 are locked, and the limiting rods 13 are positioned below the packing layer 4.
As shown in fig. 3, 4 and 5, during installation, all the jacking mechanisms 6 of each jacking group are placed in the backwashing tank 9, then the two ends of the mounting plate 11 are inserted into the positioning grooves 12, the mounting plate 11 moves downwards along the positioning grooves 12 and is sleeved on all the jacking mechanisms 6 of the same jacking group, the positioning rings 10 at the lower ends of the jacking mechanisms 6 are just clamped in the positioning ring placing grooves at the bottom of the mounting plate 11, then the limiting rods 13 are locked with the positioning grooves 12, and the mounting plate 11, the positioning rings 10 and the limiting rods 13 are matched, so that the jacking mechanisms 6 can be firmly fixed in the backwashing tank 9; when the mounting plate is detached, the limiting rod 13 is separated from the positioning groove 12, and then the mounting plate 11 is pulled out from the positioning groove 12. In order to facilitate the installation of the installation plate 11, an installation groove is formed in a bottom plate in the backwashing tank 9, and the lower end of a positioning ring 10 positioned at the bottom of the jacking mechanism 6 is inserted in the installation groove.
As a further improvement, the screw hole is provided at the bottom of the positioning groove 12, and one end of the limiting rod 13 is connected with the screw hole by screw thread and the other end extends to the upper part of the mounting plate 11. The limiting rod 13 is in threaded connection with the backwashing tank 9, the connection is firm and reliable, the jacking mechanism 6 can be more firmly fixed in the backwashing tank 9, the dismounting is convenient and fast, and the time and the labor are saved.
As right the utility model discloses a further improvement, the both ends of mounting panel 11 are all upwards buckled and are extended to form into the connecting portion 14 of vertical setting, and the one end of connecting portion 14 orientation backwash groove 9 inner wall is the dovetail structure, and constant head tank 12 is the dovetail, and the up end of connecting portion 14 is located the below of 4 up ends of packing layer and is located the top of 6 stiff ends of climbing mechanism. As shown in fig. 3, 4 and 5, the dovetail strip and the dovetail groove are matched in structure, so that the mounting plate 11 can be effectively prevented from shaking, and the jacking mechanism 6 is prevented from shaking.
As a further improvement of the present invention, a support diagonal bar 15 is connected between the connecting portion 14 and the mounting plate 11. As shown in fig. 3, 4 and 5, the connecting portion 14 is connected to the mounting plate 11 by the supporting diagonal rods 15, so that the connection between the two is more firm and reliable.
As right the utility model discloses a further improvement, back washing unit still includes water pump and waste water buffer pool, and the entrance point and the blow off pipe 8 of water pump are connected, and the exit end and the waste water buffer pool of water pump are connected. Utilize the water pump can carry waste water in the waste water buffer pool fast to improve washing efficiency.
The utility model discloses when specifically using, be provided with aquatic plant 2 on packing layer 4, surface of water 3 in back flush tank 9 is located 1 below of water inlet, and climbing mechanism 6's lower extreme is fixed with the help of mounting panel 11, holding ring 10 and the cooperation of gag lever post 13, with back flush tank 9 locking, and climbing mechanism 6's upper end is inserted inside packing layer 4. When the constructed wetland blocks, the water inlet 1 of the backwashing tank 9 keeps the water inflow unchanged, the water outlet 7 is closed and the drain pipe 8 is opened, the upper end of the jacking mechanism 6 is remotely controlled by the controller to lift, so that the micro-stirring effect is achieved, the packing layer 4 in the backwashing tank 9 slowly creeps, impurities and blockages among the packings are loosened, the aeration pump is opened before and after the jacking mechanism 6 is started, the impurities and the blockages on the packing layer 4 are washed away through the dual functions of water flow and aeration, and the washed impurities and the blockages are discharged into the wastewater buffer tank through the drain pipe 8 under the action of the water pump. The device has simple structure and simple and convenient operation, does not need to replace the packing layer 4, and can directly wash the packing layer 4 in the wetland, thereby achieving the aim of preventing blockage. When the backwashing is carried out, other chemical or biological materials are not needed, the required time is short, a new water source is not needed, and the multiple groups of wetlands can be carried out in batches at different time periods, so that the daily sewage treatment is not influenced.
When the constructed wetland is not blocked, the jacking mechanism 6 does not work, the aeration pump and the one-way valve at the mounting hole of the backwashing tank 9 are started, and gas enters the backwashing tank 9 through the aeration head 5, so that the DO concentration can be improved, and the sewage treatment effect is enhanced; the aeration treatment is carried out in winter, the water temperature and DO concentration can be improved, a good environment is provided for the growth of microorganisms, and the treatment effect of the sewage in winter is ensured.

Claims (9)

1. The utility model provides a gaseous back flush unit of undercurrent constructed wetland, includes backwash tank (9) and sets up packing layer (4) in backwash tank (9), and water inlet (1) of backwash tank (9) are located packing layer (4) top, delivery port (7) are located the below of packing layer (4) up end, its characterized in that: the backwashing device further comprises a controller, a sewage discharge pipe (8) and a jacking mechanism (6) which is arranged in the backwashing tank (9) and is positioned below the packing layer (4), wherein the controlled end of the jacking mechanism (6) is connected with the controller, the packing layer (4) has a lifting degree of freedom by virtue of the stretching of the jacking mechanism (6), the inlet end of the sewage discharge pipe (8) is communicated with the inside of the backwashing tank (9) and the communicated part is positioned above the packing layer (4), and the outlet end of the sewage discharge pipe (8) extends to the outside of the backwashing tank (9).
2. The subsurface flow constructed wetland gas backwashing device according to claim 1, characterized in that: the backwashing device also comprises aeration heads (5) which are arranged in the backwashing tank (9) and are positioned below the packing layer (4) and an aeration pump which is arranged outside the backwashing tank (9), wherein the air inlets of all the aeration heads (5) are connected with the aeration pump, the air outlets of all the aeration heads (5) face the packing layer (4), and the controlled end of the aeration pump is connected with the controller.
3. The undercurrent constructed wetland gas backwashing device of claim 2, wherein: the bottom plate of the backwashing tank (9) is of a hollow structure, an air inlet pipe with one end communicated with the hollow structure of the bottom plate and the other end connected with the aeration pump is arranged on the side wall of the bottom plate, a group of mounting holes communicated with the hollow structure are formed in the top of the bottom plate, and an air inlet of the aeration head (5) is in threaded connection with the mounting holes.
4. The undercurrent constructed wetland gas backwashing device of claim 2, wherein: a one-way valve is arranged at the mounting hole of the back washing groove (9).
5. The subsurface flow constructed wetland gas backwashing device according to claim 1, characterized in that: all the jacking mechanisms (6) are divided into at least two jacking groups, all the jacking groups are arranged along the width direction of the backwashing grooves (9), all the jacking mechanisms (6) of the same jacking group are arranged along the length direction of the backwashing grooves (9), the lower end of each jacking mechanism (6) is fixed with a positioning ring (10), the backwashing device also comprises a mounting plate (11), the length direction of the mounting plate (11) is the same as the length direction of the backwashing grooves (9), each mounting plate (11) is sleeved on all the jacking mechanisms (6) of the same jacking group by means of mounting holes formed in the mounting plate, the bottom of each mounting plate (11) is provided with a positioning ring placing groove, positioning grooves (12) which are vertically arranged are arranged on the inner wall of each backwashing groove (9) and correspond to the two ends of the mounting plate (11), and limiting rods (13) which are detachably connected with the backwashing grooves (9) are arranged in the positioning grooves (12), two ends of the mounting plate (11) are respectively inserted into the positioning grooves (12) at the corresponding ends and locked with the backwashing grooves (9) by means of limiting rods (13) positioned above the mounting plate (11), and the limiting rods (13) are positioned below the packing layer (4).
6. The subsurface flow constructed wetland gas backwashing device according to claim 5, characterized in that: a screw hole is arranged at the bottom of the positioning groove (12), one end of the limiting rod (13) is in threaded connection with the screw hole, and the other end of the limiting rod extends to the upper part of the mounting plate (11).
7. The subsurface flow constructed wetland gas backwashing device according to claim 5, characterized in that: the both ends of mounting panel (11) are all upwards buckled and are extended connecting portion (14) that form into vertical setting, and connecting portion (14) are the dovetail structure towards the one end of backwash groove (9) inner wall, and constant head tank (12) are the dovetail, and the up end of connecting portion (14) is located the below of packing layer (4) up end and is located the top of climbing mechanism (6) stiff end.
8. The subsurface flow constructed wetland gas backwashing device of claim 7, wherein: a support diagonal rod (15) is connected between the connecting part (14) and the mounting plate (11).
9. The subsurface flow constructed wetland gas backwashing device according to claim 1, characterized in that: the back washing device also comprises a water pump and a wastewater buffer pool, wherein the inlet end of the water pump is connected with the sewage discharge pipe (8), and the outlet end of the water pump is connected with the wastewater buffer pool.
CN202121222002.7U 2021-06-02 2021-06-02 Undercurrent constructed wetland gas back flushing device Active CN215049072U (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
CN202121222002.7U CN215049072U (en) 2021-06-02 2021-06-02 Undercurrent constructed wetland gas back flushing device

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
CN202121222002.7U CN215049072U (en) 2021-06-02 2021-06-02 Undercurrent constructed wetland gas back flushing device

Publications (1)

Publication Number Publication Date
CN215049072U true CN215049072U (en) 2021-12-07

Family

ID=79210044

Family Applications (1)

Application Number Title Priority Date Filing Date
CN202121222002.7U Active CN215049072U (en) 2021-06-02 2021-06-02 Undercurrent constructed wetland gas back flushing device

Country Status (1)

Country Link
CN (1) CN215049072U (en)

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