CN212151772U

CN212151772U - Denitrifying bacteria enrichment transport tank for sewage treatment

Info

Publication number: CN212151772U
Application number: CN202020235770.5U
Authority: CN
Inventors: 李珊珊; 单宁; 谢旻; 俞勇; 叶天明; 倪黄蕾; 葛玫; 马为卿; 许新灵; 喻盛华
Original assignee: Zhejiang Fuchun Ziguang Environmental Protection Co ltd
Current assignee: Zhejiang Fuchun Ziguang Environmental Protection Co ltd
Priority date: 2020-03-01
Filing date: 2020-03-01
Publication date: 2020-12-15
Anticipated expiration: 2030-03-01

Abstract

The utility model relates to a denitrifying bacteria enrichment transport tank for sewage treatment, which belongs to the technical field of sewage treatment. The denitrifying bacteria enrichment transportation tank comprises a tank body and a cover body; an annular sleeve seat is fixedly sleeved on the lower end part of the tank body, and a supporting gap is reserved between the bottom surface of the tank body and the bottom end surface of the annular sleeve seat; the bottom surface of the enrichment transportation tank is provided with an installation through hole for installing a temperature sensor in a watertight manner and an installation through hole for installing a nitrogen concentration sensor in a watertight manner; a signal transfer joint electrically connected with signal output terminals of the temperature sensor and the nitrogen concentration sensor is arranged on the side wall of the annular sleeve seat; the side wall of the upper end part of the tank body is provided with a fluid adjusting interface. The tank body can facilitate the enrichment and transportation of denitrifying bacteria for sewage treatment, so that denitrifying bacteria required by sewage treatment can be enriched in advance, and the tank body can be widely applied to the fields of sewage treatment plants and the like, particularly the quick-adjustment starting of a deep-bed denitrifying filter and the emergency recovery after the sewage treatment process is impacted.

Description

Denitrifying bacteria enrichment transport tank for sewage treatment

Technical Field

The utility model relates to a sewage treatment technical field, specifically speaking relates to a denitrifying bacteria enrichment transport tank that sewage treatment used.

Background

With the increasing emphasis of the country on water environment treatment, the effluent standard of each relevant pollutant in sewage treatment is correspondingly improved. TN is a typical pollutant representative, and the treatment method is relatively lagged behind COD_CrAnd TP and the like. In recent years, on the basis of secondary biological treatment, most sewage treatment plants usually adopt technologies such as a deep bed denitrification filter and the like to carry out denitrification removal on nitrate nitrogen formed in the primary secondary biological treatment process, thereby achieving the purpose of removing TN. The denitrification removal process is completed by denitrifying bacteria, so that if a convenient denitrifying bacteria enrichment and transportation device is obtained, the systematic effect of denitrification work can be greatly improved. In the process of feeding bacteria for use, denitrifying bacteria are usually enriched in a plastic barrel and other simple and crude containers, and then the simple and crude containers are used as transport tanks to transport the enriched denitrifying bacteria to a water treatment site for denitrifying bacteria feeding operation; in the process of the enrichment of the denitrifying bacteria,whether enrichment is completed is generally judged by observing the number of bubble strings; moreover, temperature monitoring during enrichment is also one of the main enrichment factors, which causes difficulty in accurate control of the enrichment process of denitrifying bacteria and inconvenience in transportation.

In addition, after being transported to a sewage treatment plant, the material needs to be manually fed, and the specific operation process is as follows, firstly, the holding liquid in the material storage tank is manually poured out, and then the carrier filler enriched with a large amount of denitrifying bacteria is poured into a specified strain feeding port, wherein the carrier filler can be the filler disclosed in the patent document with the publication number of CN 105233665A; the culture solution poured out previously is used for cleaning the storage tank and is poured into the feeding port, so that the whole process is complex and inconvenient for manual operation, the feeding is required to be carried out according to a preset time point according to a sewage treatment process, a large amount of labor is required to be occupied, the cost is increased, even the night operation is required, and the related safety is also deficient; especially, when pollutants such as peracid, over-alkali, heavy metals and the like which damage denitrifying bacteria occur, the treatment capability of the sewage treatment system is difficult to timely and emergently recover, so that the subsequent treatment is influenced.

SUMMERY OF THE UTILITY MODEL

The utility model mainly aims at providing a denitrifying bacteria enrichment transportation tank for sewage treatment, which is convenient for monitoring the enrichment process of the denitrifying bacteria and transporting the enriched strains;

another object of the utility model is to provide a denitrifying bacteria enrichment transport tank convenient to denitrifying bacteria carries out the automation and throws the material.

In order to achieve the main purpose, the utility model provides a denitrifying bacteria enrichment transportation tank, which comprises a tank body and a cover body for sealing the charging hole of the tank body; the lower end part of the tank body is fixedly sleeved with an annular sleeve seat, and a supporting gap is reserved between the bottom surface of the tank body and the bottom end surface of the annular sleeve seat; the bottom surface of the enrichment transportation tank is provided with an installation through hole for installing a temperature sensor in a watertight manner and an installation through hole for installing a nitrogen concentration sensor in a watertight manner; a signal transfer joint electrically connected with signal output terminals of the temperature sensor and the nitrogen concentration sensor is arranged on the side wall of the annular sleeve seat; the side wall of the upper end part of the tank body is provided with a fluid adjusting interface.

Through setting up temperature sensor and nitrogen gas concentration sensor, can not only monitor the enrichment process according to nitrogen gas concentration in the enrichment process, and can utilize temperature sensor to carry out temperature detection to can finely realize utilizing this enrichment transport tank to carry out denitrifying bacteria enrichment, transportation operation. In addition, the annular sleeve seat is arranged, so that the standing stability of the device is improved, and the safety of equipment such as a built-in circuit can be effectively protected.

The specific scheme is that an inner shoulder table top for supporting the bottom surface of the tank body is arranged on the inner annular wall of the annular sleeve seat. The installation operation is convenient.

The specific scheme is that the tank body and the annular sleeve seat are both cylindrical structures.

The preferable scheme is that the fluid regulating interface is a manual valve, an electric valve or a self-closing valve.

In order to achieve the other purpose, the utility model provides a preferred scheme is a feeding cylinder body below the tank body, the feeding cylinder body is accommodated in the inner cavity of the annular sleeve seat, and the valve core assembly is movably sleeved in the inner cavity of the feeding cylinder body; a communicating orifice butted with the upper port of the feeding cylinder is arranged on the bottom surface of the cavity of the tank body; a suction port is arranged at the upper end part of the feeding cylinder body; the valve core assembly is used for forming a three-way control valve structure with the feeding cylinder body, wherein the upper port, the lower port of the feeding cylinder body and the suction interface are communicated ports, and only the upper port and the lower port are communicated to construct a carrier filler channel through which carrier filler can pass, or only the upper port and the suction interface are communicated to construct a liquid channel with a carrier filler filter screen; the lower port is provided with a thread structure which is detachably connected with the end cover structure.

The three-way control valve structure capable of constructing the carrier filler channel and the liquid channel with the carrier filler filter screen is arranged at the bottom of the tank body, so that when a feeding decision event such as a preset time point or detection of a preset condition occurs, the position of the valve core assembly in the feeding barrel is controlled to construct the liquid channel, the position of the valve core assembly in the feeding barrel is further changed, the carrier filler channel is constructed, the carrier filler and denitrifying bacteria on the carrier filler are fed into the feeding port, and the automatic feeding process can be well realized.

The further scheme is that a relay interface is fixedly arranged on the side wall of the annular sleeve seat, one port is in butt joint with the suction interface through a pipeline, and the other port is used for external connection. Effectively reducing the exposure of the connecting pipeline and improving the transportation and use safety.

The bottom surface of the tank body is a downward convex tapered inclined surface, and the communication hole is distributed at the lowest point of the tapered inclined surface.

The further proposal is that the valve core component can be sheathed in the feeding cylinder body in a way of moving along the axial direction of the feeding cylinder body.

A further proposal is that the valve core component comprises a columnar valve body and a sealing element which is tightly pressed between the valve body and the inner wall of the feeding cylinder body; the valve body is at least provided with a hollow section part positioned between the two groups of sealing parts, and the cavity wall of the hollow section part is provided with a plurality of rows of sieve holes which are arranged along the axial direction of the hollow section part at intervals to form a carrier filler filter screen; the valve core component can move along the axial direction until part of the sieve pores are positioned in the cavity of the tank body and communicated with the suction port to construct a liquid channel, and a carrier filler channel is reserved between the upper port and the lower port of the feeding cylinder body.

The sealing element is an elastic sealing ring; the peripheral surface of the section part of the valve body, which is positioned on the upper side of the hollow section part, is concavely provided with an annular groove, at least two annular grooves which are arranged at intervals in the axial direction are distributed on the section part positioned on the lower side of the hollow section part, and the annular grooves are used for embedding and sleeving elastic sealing rings; the end face of deviating from the feeding cylinder body in the communicating hole is convexly provided with a plurality of limiting strips, the limiting strips surround a hollow guide cavity for limiting and guiding the movement of the valve core assembly into the inner cavity of the tank body, and a gap between every two adjacent limiting strips forms a channel for the carrier material to pass through.

Drawings

Fig. 1 is a schematic structural perspective view of an automatic feeding system provided with an embodiment of the present invention;

fig. 2 is an exploded schematic view of an automatic feeding system provided with an embodiment of the present invention;

fig. 3 is a schematic structural view of an automatic feeding system provided with an embodiment of the present invention;

FIG. 4 is a schematic structural view of the tank and the feeding cylinder according to the embodiment of the present invention;

FIG. 5 is an enlarged view of a portion A of FIG. 4;

fig. 6 is a schematic structural diagram of a nitrogen concentration sensor according to an embodiment of the present invention;

fig. 7 is a schematic structural diagram of a temperature sensor according to an embodiment of the present invention;

fig. 8 is a schematic structural view of a valve core assembly in an embodiment of the present invention;

fig. 9 is a schematic structural view of an annular socket according to an embodiment of the present invention;

fig. 10 is a schematic structural view of a linear displacement output device and a connecting member according to an embodiment of the present invention;

fig. 11 is a schematic diagram of a position of a valve core assembly during an automatic feeding process by using an embodiment of the present invention, wherein, fig. (a) is a schematic diagram of a structure when a tank is mounted on a supporting mounting plate and a connecting member is just in contact with the valve core under the driving of a linear displacement output device, fig. (b) is a schematic diagram of a structure when a holding liquid channel is constructed, and fig. (c) is a schematic diagram of a structure when a carrier filler channel is constructed;

FIG. 12 is a schematic view of a portion of the structure of FIG. 11 (a);

FIG. 13 is a partial schematic view of the structure of FIG. 11 (b);

FIG. 14 is a partial schematic view of the structure of FIG. 11 (c);

fig. 15 is a schematic structural view of a pipeline system cooperating with an embodiment of the present invention.

Detailed Description

The present invention will be further described with reference to the following examples and accompanying drawings.

Examples

In this embodiment, the utilization is equipped with the utility model discloses the automatic feeding system structure of denitrifying bacteria enrichment transport tank embodiment, it is right the utility model discloses the structure and the use of denitrifying bacteria enrichment transport tank carry out exemplary explanation.

Referring to fig. 1 to 15, the automatic feeding system 1 is used for automatically feeding denitrifying bacteria used in a sewage treatment system, and specifically comprises a denitrifying bacteria enrichment transport tank 2 for containing carrier filler and retaining liquid, a support plate 11 provided with an interface structure 10, a feeding control device for feeding the denitrifying bacteria enrichment transport tank 2 fixedly mounted on the support plate 11, and a pipeline system 12 for pumping and pumping the retaining liquid. In this embodiment, the holding solution is a culture solution of denitrifying bacteria; the supporting plate 11 is provided with a feeding port 100 for feeding denitrifying bacteria, and the feeding port is installed at the existing feeding position.

As shown in fig. 2 to 14, the transport tank 2 for enrichment of denitrifying bacteria comprises a tank body 3, a cover 20 for enclosing a charging port 30 of the tank body 3, a feeding cylinder 4 fixed below the tank body 3, and an annular sleeve seat 21 sleeved on the lower end of the tank body 3. The body of the tank 3 is a cylindrical structure, the upper port 301 of the body forms a charging port of the body, the cover 20 is fixedly connected with the upper port 301 in a detachable mode through a threaded structure, and an elastic sealing ring is pressed between the lower end face of the cover 20 and the upper port face of the tank 3. The feeding control device comprises a valve core assembly 5 movably sleeved in the cylinder cavity of the feeding cylinder body 4, a linear displacement output device 6 for driving the valve core assembly 5 to move in the cylinder cavity of the feeding cylinder body 4, and a control unit for controlling the linear displacement output device 6 to act; the control unit comprises a single chip microcomputer, and the single chip microcomputer controls the relay to output an action control signal to the linear displacement output device 6 when the single chip microcomputer receives a detection signal output by the corresponding detection sensor and represents that the material needs to be fed or a preset feeding time point.

The cavity bottom surface 31 of the can body 3 is a tapered inclined surface which is convex downwards, so that carrier fillers and a retaining solution can be conveniently collected at a low-lying position, and the materials can be better and cleanly fed, and in the embodiment, the cavity bottom surface plate 39 is of a frustum structure, so that the cavity bottom surface 31 is surrounded into a conical surface; a communication orifice 310 is provided at the lowest of the chamber bottom surface 31. The feeding cylinder body 4 is of a cylinder structure, the upper end part of the feeding cylinder body 4 is fixedly provided with a suction port 40 in a side-to-side mode, the upper end part of the suction port is fixedly connected with the lower port surface of the communicating hole 310, the upper port of the suction port is in butt joint with the lower hole of the communicating hole 310, namely, a cylinder cavity for communicating the feeding cylinder body 4 with an inner cavity of the tank body 3, and the caliber of a hole part of the butt joint of the communicating hole 310 and the upper port of the feeding cylinder body 4 is more than or equal to the cylinder diameter of the feeding cylinder body 4, so that a valve core assembly 5 passing; for the fixing mode between the feeding cylinder 4 and the tank 3, the two can be manufactured independently and then be watertight fixed by welding, bonding and the like, or the two can be manufactured in an integrated forming mode, for example, the two can be manufactured in a casting or injection molding mode, namely, the two can be manufactured by plastic or metal materials, and specifically, the tank 3 and the feeding cylinder 4 are both manufactured by plastic, so that the two can be manufactured in an integrated injection molding mode; the side wall of the upper end part of the tank body 3 is provided with a pump-back connector 32 which can be constructed by a manual valve and opened after an external connecting pipeline and cut off when the external connecting pipeline is not connected, or can be constructed by a self-closing valve, and the pump-back connector is opened and conducted when a corresponding connector is inserted and closed when the corresponding connector is not connected; specifically, a mounting through hole 3300 is provided on the side wall of the can body 3. The pump-back interface 32 constitutes a fluid regulation interface in this embodiment, and may be used to regulate the holding liquid and the gas.

A plurality of limiting strips 31, in this embodiment six, are arranged convexly on the end surface of the communication orifice 310 facing away from the charging cylinder 4. An inner shoulder 41 is arranged at the upper end part of the cavity of the feeding cylinder body 4, and an external thread 42 is arranged on the peripheral surface of the lower port part and is used for matching with the end cap and pressing the elastic sealing ring between the inner shoulder and the end cap to realize the sealing of the lower port of the feeding cylinder body 4.

The bottom panel 39 of the denitrifying bacteria enrichment transport tank 3 is provided with an installation through hole 390 for installing the temperature sensor 13 in a watertight manner and an installation through hole 391 for installing the nitrogen concentration sensor 14 in a watertight manner, as shown in fig. 3 and 5 to 7, inner hole surfaces of the installation through hole 390 and the installation through hole 391 are both of an internal thread structure, the fixed end portion 130 of the temperature sensor 13 is provided with an external thread structure 1300 matched with the installation through hole 390, watertight installation is realized by an elastic sealing ring pressed between the fixed end portion 130 and the lower end surface of the installation through hole 390, and the sensing end 131 is positioned in the inner cavity of the tank body 3, so that the liquid temperature is monitored; the fixing end part 140 of the nitrogen concentration sensor 14 is provided with an external thread structure 1400 matched with the installation through hole 391, watertight installation is realized by an elastic sealing ring pressed between the fixing end part 140 and the lower end face of the installation through hole 391, and the sensing end 141 is positioned in the top area of the inner cavity of the tank body 3, so that the nitrogen concentration on the liquid level is monitored.

A signal transfer joint 19 electrically connected with the signal output terminal 132 of the temperature sensor 13 and the signal output terminal 142 of the nitrogen concentration sensor 14 is arranged on the side wall of the annular sleeve seat 21, wherein the signal transfer joint 19 can be constructed by adopting one of plug-in male and female joint components in the existing signal line, and the other is connected to the end part of an external connection circuit, is connected when a monitoring signal needs to be acquired, and is detached when not needed so as to be convenient for operation; and a liquid relay port 18 is fixedly arranged on the side wall of the annular sleeve seat 21, one port of the liquid relay port is in butt joint with the suction port 40 through the pipeline 16, the other port of the liquid relay port is in butt joint with the inlet of the suction path of the pipeline system 12, the liquid relay port 18 can be constructed by a manual valve, is opened after the pipeline is connected outside and is cut off when the pipeline is not connected outside, and can also be constructed by a self-closing valve, is opened and conducted when a corresponding joint is inserted, and is closed when the corresponding joint is not connected. An inner shoulder surface 2192 for supporting the bottom surface of the tank 3 is provided on the inner annular wall of the annular socket 21. Specifically, the annular boss 21 is provided with attachment through

holes

2190, 2191 for attaching the signal relay joint 19 and the liquid relay port 18. Therefore, in the present embodiment, the feeding cylinder 4, the suction port 40, and the sensor signal terminal are accommodated in the inner cavity of the annular socket 21 for protection and maintenance.

As shown in fig. 2, 5 and 8, the valve core assembly 5 includes a cylindrical valve body 7 and three sealing members, in this embodiment, an elastic sealing ring 51, an elastic sealing ring 52 and an elastic sealing ring 53, which are tightly pressed between the valve body 7 and the inner wall of the charging barrel 4. In this embodiment, the valve body 7 is formed by three segments, specifically by welding or bonding, or by three-dimensional printing, from top to bottom, the valve body 7 includes an upper segment 71 having an annular groove 710 disposed along the circumference thereof, a hollow segment 72 having a plurality of rows of sieve holes 720 on the cavity wall, and a lower segment 73 having an

annular groove

730, 731 disposed along the circumference thereof, the elastic sealing ring 51 is embedded in the annular groove 710, the elastic sealing rings 52, 53 are embedded in the

annular grooves

730, 731, thereby forming a set of sealing assemblies on both sides of the hollow segment 72, the valve body 7 can be provided with a plurality of hollow segments 72 having inner cavities communicating with each other as required, in this embodiment, nine rows of sieve holes 720 are disposed on the cavity wall of the hollow segment 72 along the axial direction thereof, the diameter of the sieve holes is smaller than the outer diameter of the carrier filler, this makes it possible to form a carrier-filler screen, i.e. the carrier filler cannot enter the interior of the hollow section 72. Even if the elastic sealing ring 51 is pushed out of the inner cavity of the charging barrel 4 during use, the elastic sealing rings 52 and 53 are still retained in the inner cavity of the charging barrel 4, and the mounting stability in the charging barrel is effectively maintained. In addition, in this embodiment, because the plurality of limiting strips 31 enclose the hollow guide cavity for limiting and guiding the movement of the valve core assembly 5 into the inner cavity of the tank body 3, and the gap between two adjacent limiting strips 31 forms a channel through which carrier filler can pass, the stability can be maintained, and when the valve core assembly 5 is pushed into the inner cavity of the tank body 3 to lie on the communication hole 310, the subsequent progress is slowed down.

As shown in fig. 10, the connecting member between the mover 60 and the valve body 7 of the linear displacement output device 6 is a plurality of thin rods 16 arranged side by side, in this embodiment, the mounting surface 600 on the mover 60 for fixing the thin rods 16 is a convex conical surface to ensure that the carrier filler and the holding liquid can be fed cleanly; in the embodiment, the two are separably contacted structures, so that only the pushing force is provided, and in addition, the two can also be arranged as a fixed connection structure to realize the pushing and pulling functions. In this embodiment, the linear displacement output device 6 can be constructed by using an air cylinder, an oil cylinder, a linear motor and the like, and only water resistance needs to be treated, or a rotary motor and a screw-nut mechanism can be used for construction, so that the problem of water resistance is also treated.

As shown in fig. 15, the piping system 12 includes a suction pipe 81 connected to the suction port 40 through the pipe 16 and the intermediate joint 18, a pump-back pipe 87 connected to the pump-back port 32, a reservoir tank 84, and a pump system; wherein the pump system comprises a pump-back pump 86 and a suction pump 82, wherein the suction pump 82 is used for pumping the liquid at the suction port 40 to the liquid storage tank 84 through the suction pipeline 81, and pumping the liquid in the liquid storage tank 84 to the pump-back port 32 through the pump-back pipeline 87 to enter the tank 3.

In this embodiment, the supporting and mounting plate 11 is used for mounting and fixing the denitrifying bacteria enrichment and transportation tank 2 and the linear displacement output device 6, wherein the denitrifying bacteria enrichment and transportation tank 2 is detachably mounted on the supporting and mounting plate 11 and is located on the upper side of the supporting and mounting plate 11, and the linear displacement output device 6 is fixedly mounted on the lower side of the supporting and mounting plate 11 through a fixing bracket (not shown in the figure), so that the valve core assembly 5 is driven from the lower side to relatively throw the material cylinder 4 and move along the axial direction of the material cylinder 4.

In the use, can be in the enrichment of denitrifying bacteria enrichment transport tank 2, and in the enrichment process, lid 20 utilizes the sealed charging hole 301 of elastic seal circle, utilize temperature sensor 13 and nitrogen gas concentration sensor 14 to monitor whole enrichment process, utilize pump back interface 32 to regulate and control the gas in jar body 3, and after accomplishing the enrichment, through the sealed lower port of throwing material barrel 4 of sealed pump back interface 32 with the end cover, thereby be convenient for transport, also can monitor through the internal environment temperature and the nitrogen gas concentration of signal line in the transportation, and accessible air pipeline and pump back interface 32 intercommunication and adjust its inside gas. The detection of the nitrogen concentration in the enrichment process of different denitrifying bacteria can be set according to actual process test data and is not limited to a specific data.

After the denitrifying bacteria enrichment transport tank 2 is transported to a water treatment site, the lower port of the feeding cylinder 4 is detachably butted with the interface structure 10 fixedly arranged on the support mounting plate 11 through a thread structure, namely, the external thread 42 and the internal thread 100 are screwed and fixed, and when the two are completely butted, the lower end surface of the annular sleeve seat 21 is supported on the support mounting plate 11, so that the strength of the mounting structure is improved, at the moment, the structure of each part is as shown in fig. 11(a) and fig. 12, at the moment, the valve core assembly 5 is kept in the inner cavity of the feeding cylinder 4 by utilizing the internal shoulder 41, the liquid pressure and the friction force between the elastic sealing rings 51, 52 and 53 and the inner wall surface of the feeding cylinder 4, of course, more than one elastic stop strip can be arranged at the upper port of the feeding cylinder 4, so that the limiting is carried out, and the blocking of the flowing of the carrier filler is not caused.

When the time reaches a preset time point or the monitoring condition reaches a preset value, for example, when the concentration of the corresponding substance in the treated discharged water stream is within a preset interval, the control unit controls the linear displacement output device 6 to drive the valve core assembly 5 to move from the position shown in fig. 11(a) and 12 to the position shown in fig. 11(b) and 13, at this time, part of the sieve holes 720 are located in the cavity of the tank 3 and part of the sieve holes 720 are communicated with the suction port 40, so that a liquid outlet channel is formed between the cavity of the tank 3 and the suction port 40, and the carrier filler can be blocked outside the inner cavity of the hollow end portion 72 by using the size limitation of the sieve holes 720, at this time, the whole retaining liquid in the tank 3 is sucked into the liquid storage tank 84 by using the suction pump 82, and the separation of the carrier filler and the retaining liquid is completed. For the position control precision, a sensor can be arranged on the moving path of the rotor or the precise control can be carried out based on the control of a servo motor.

That is, the linear displacement output device 6 is at least used for driving the valve core assembly 5 to move along the axial direction thereof until part of the sieve holes 720 are located in the cavity of the tank 3 and part of the sieve holes 720 are communicated with the suction port 40, so as to construct a liquid channel with a carrier filler filter screen and a first channel for the carrier filler to pass through between the upper port and the lower port of the feeding cylinder 4.

After the separation of the carrier filler and the retaining liquid is completed, the control unit controls the linear displacement output device 6 to drive the valve core assembly 5 to move from the position shown in fig. 11(b) and fig. 13 to the position shown in fig. 11(c) and fig. 14, at this time, the valve core assembly 5 is completely positioned in the inner cavity of the tank 3 and is limited and guided by the limiting strip 3, the position is maintained by the position support of the thin rod 16, a sufficient distance exists between the lower end surface of the valve core assembly and the upper end surface of the communication orifice 310, so that the carrier filler can enter the inner cavity of the feeding cylinder 4 through the gap between two adjacent limiting strips 31, a first channel is constructed by the gap between the thin rod 16 and the feeding cylinder 4, the carrier filler enters the denitrifying bacteria feeding port through the first channel under the action of gravity, and after the feeding is completed, the pump 86 is started to pump the retaining liquid in the liquid storage tank 84 into the inner cavity of the tank 3, the time point of the rinsing is preset duration which can be set according to experience, the whole tank body can be weighed and detected to judge whether the feeding of the carrier filler is finished, a small amount of the carrier filler can be reserved in the tank body, and the subsequent retaining liquid is used for rinsing. To improve the flushing effect, a more efficient flushing can be performed by providing a plurality of pump-back ports 32 and adjusting to different spray angles.

In the present exemplary embodiment, the line system 12 serves for pumping the liquid in the feed cylinder 4 via the suction connection 40 and for pumping the pumped liquid back into the tank 3 via the pump-back connection 32. The valve core assembly 5 is used for forming a three-way control valve structure with the feeding cylinder 4, wherein the three communicating ports are an upper port, a lower port and a suction port 40 of the feeding cylinder 4, so that a first channel through which carrier filler can pass can be constructed only when the upper port and the lower port of the feeding cylinder 4 are communicated, and a holding liquid channel with a carrier filler filter screen can be constructed only when the upper port and the suction port 40 of the feeding cylinder 4 are communicated.

Claims

1. The utility model provides a denitrifying bacteria enrichment transport tank that sewage treatment used, is including jar body and be used for right the lid of the charging hole of jar body carries out the closing cap, its characterized in that:

an annular sleeve seat is fixedly sleeved on the lower end part of the tank body, and a supporting gap is reserved between the bottom surface of the tank body and the bottom end surface of the annular sleeve seat;

the bottom surface of the enrichment transportation tank is provided with an installation through hole for installing a temperature sensor in a watertight manner and an installation through hole for installing a nitrogen concentration sensor in a watertight manner;

a signal transfer joint electrically connected with the signal output terminals of the temperature sensor and the nitrogen concentration sensor is arranged on the side wall of the annular sleeve seat;

and a fluid adjusting interface is distributed on the side wall of the upper end part of the tank body.

2. The denitrifying bacteria enrichment transportation tank of claim 1, wherein:

an inner shoulder table top used for supporting the bottom surface of the tank body is arranged on the inner annular wall of the annular sleeve seat.

3. The denitrifying bacteria enrichment transportation tank of claim 1, wherein:

the tank body and the annular sleeve seat are both of cylindrical structures.

4. The denitrifying bacteria enrichment transport tank as set forth in any one of claims 1 to 3, wherein:

the fluid adjusting interface is a manual valve, an electric valve or a self-closing valve.

5. The denitrifying bacteria enrichment transport tank as set forth in any one of claims 1 to 3, wherein:

a feeding cylinder is fixedly arranged below the tank body, the feeding cylinder is accommodated in the inner cavity of the annular sleeve seat, and a valve core assembly is movably sleeved in the inner cavity of the feeding cylinder;

a communicating orifice butted with the upper end opening of the feeding cylinder is arranged on the bottom surface of the cavity of the tank body; a suction port is arranged at the upper end part of the feeding cylinder body;

the valve core assembly is used for forming a three-way control valve structure with the upper port, the lower port of the feeding cylinder and the suction interface as communicating ports with the feeding cylinder, and only the upper port and the lower port are communicated to construct a carrier filler channel through which carrier filler can pass, or only the upper port and the suction interface are communicated to construct a liquid channel with a carrier filler filter screen;

and the lower port is provided with a thread structure which is detachably connected with the end cover structure.

6. The denitrifying bacteria enrichment transportation tank of claim 5, wherein:

the side wall of the annular sleeve seat is fixedly provided with a relay interface, one port is in butt joint with the suction interface through a pipeline, and the other port is used for being connected with an external pipeline.

7. The denitrifying bacteria enrichment transportation tank of claim 5, wherein:

the bottom surface of the tank body is a gradually-reduced inclined plane protruding downwards, and the communication hole is arranged at the lowest point of the gradually-reduced inclined plane.

8. The denitrifying bacteria enrichment transportation tank of claim 5, wherein:

the valve core assembly can be movably sleeved in the feeding cylinder body along the axial direction of the feeding cylinder body.

9. The denitrifying bacteria enrichment transportation tank of claim 8, wherein:

the valve core assembly comprises a cylindrical valve body and a sealing element tightly pressed between the valve body and the inner wall of the feeding cylinder body; the valve body is at least provided with a hollow section part positioned between two groups of sealing parts, and the cavity wall of the hollow section part is provided with a plurality of rows of sieve holes which are arranged along the axial direction at intervals to form the carrier filler filter screen; the valve core component can move along the axial direction until part of the sieve pores are positioned in the cavity of the tank body and communicated with the suction port to construct the liquid channel, and the carrier packing channel is reserved between the upper port and the lower port of the feeding cylinder body.

10. The denitrifying bacteria enrichment transportation tank of claim 9, wherein:

the sealing element is an elastic sealing ring; the circumferential surface of the section of the valve body, which is positioned on the upper side of the hollow section, is concavely provided with annular grooves, at least two annular grooves which are arranged at intervals in the axial direction are distributed on the section of the valve body, which is positioned on the lower side of the hollow section, and the annular grooves are used for embedding and sleeving the elastic sealing rings;

the communicating hole opening deviates from the end face bulge of the feeding cylinder body, a plurality of limiting strips are arranged on the communicating hole opening, the limiting strips are surrounded to form a hollow guide cavity for limiting and guiding the movement of the valve core assembly entering the inner cavity of the tank body, and a gap between every two adjacent limiting strips forms a channel for a carrier material to pass through.