CN215403705U

CN215403705U - Anaerobic ammonia oxidation drainage impurity removal device

Info

Publication number: CN215403705U
Application number: CN202121943635.7U
Authority: CN
Inventors: 代思蒙
Original assignee: Hunan Junxin Environmental Co ltd
Current assignee: Hunan Junxin Environmental Co ltd
Priority date: 2021-08-18
Filing date: 2021-08-18
Publication date: 2022-01-04
Anticipated expiration: 2031-08-18

Abstract

The utility model discloses an anaerobic ammonia oxidation drainage impurity removal device which comprises a filtering surface, a strain backflow guide plate arranged at the bottom end of the filtering surface and splashing baffles arranged at two sides of the strain backflow guide plate, wherein a strain backflow port is formed in the strain backflow guide plate, a flushing pipe is arranged on the splashing baffle plate, and a first flushing nozzle extending above the filtering surface and a second flushing nozzle extending above the strain backflow guide plate are arranged on the flushing pipe. The device can simultaneously solve the problems of water drainage and impurity removal, can prevent the anammox flora from blocking the filter bag, improve the water drainage efficiency, automate the water drainage, reduce the labor cost, improve the reaction efficiency, can also discharge a large amount of mixed bacteria, furthest reserve the anammox flora and have high economic benefit.

Description

Anaerobic ammonia oxidation drainage impurity removal device

Technical Field

The utility model belongs to the technical field of chemical treatment of sewage and sludge, relates to an anaerobic ammonia oxidation drainage impurity removal device, and particularly relates to a drainage impurity removal integrated device for anaerobic ammonia oxidation of sludge.

Background

Anaerobic ammonium oxidation bacteria belong to the phylum of Aphyllophorales, and the rhodobacter is commonly known in the industry as anaerobic ammonium oxidation bacteria, and can convert ammonia nitrogen contained in sewage into nitrogen for removal through biochemical reaction. They are of great importance for the global nitrogen cycle and also important bacteria in sewage treatment. The anammox bacteria have an intracellular membrane structure, can fully utilize chemical energy and avoid toxicity. The anammox has the characteristic of forming a spherical adhesion flora with the diameter of several millimeters, so that the anammox has larger grain diameter, and is easy to float upwards due to the generation of nitrogen by the spherical flora, so that the strain is difficult to stand and precipitate when each batch of anammox is not finished, and then a large amount of the strain is discharged along with a water outlet, thereby affecting the drainage efficiency, losing part of the strain and being difficult to operate automatically.

Meanwhile, due to fluctuation of the quality of the inlet water, the content of the anaerobic ammonia oxidation reactor is easy to breed infectious microbes. The particle size of the mixed bacteria is small, the filter bag holes are easily blocked, the water filtration performance is reduced, and the activity of anaerobic ammonium oxidation bacteria in the reactor is influenced. Although the particle diameters of the mixed bacteria and the anaerobic ammonium oxidation bacteria are different, the anaerobic ammonium oxidation bacteria block filter holes when the mixed bacteria and the anaerobic ammonium oxidation bacteria are discharged for filtration and impurity removal, so that the impurity removal effect is poor, and the effect of strain separation is difficult to achieve.

The device provided in the Chinese patent document CN207362000U, namely the integrated anaerobic ammonia oxidation device for treating urban sewage, and the Chinese patent document CN110002587A, namely the device and the method for coupling the segmented drainage type partial nitrification, parallel anaerobic ammonia oxidation, denitrification and dephosphorization with the endogenous denitrification, mainly optimizes the activation and stable operation of an anaerobic ammonia oxidation reactor, but does not optimize drainage, does not have impurity bacteria separation, or only effectively separates silt and small particles and does not have effect on larger spherical flora.

In the prior art, the drainage form of an anaerobic ammonia oxidation reactor is relatively fixed, and the following defects are mainly existed:

(1) no matter the drainage is overflow drainage or pumping drainage, the problem that the spherical flora enters a filter bag section through a drainage pipe cannot be solved, and the existing filter bag is fixed in shape and only can cause accumulation of strains in the filter bag, so that the drainage time and the drainage efficiency are influenced, and part of flora is broken and lost;

(2) the drainage of the anaerobic ammonia oxidation reactor is difficult to realize automation due to frequent accumulation of flora in the filter bag, and the anaerobic ammonia oxidation reactor needs to be cleaned manually, so that time and labor are wasted, the reaction time is influenced, and the operation cost of the anaerobic ammonia oxidation reactor is greatly increased;

(3) the existing drainage mode is difficult to distinguish mixed bacteria and anaerobic ammonium oxidation bacteria flora, the mixed bacteria and the anaerobic ammonium oxidation bacteria flora are accumulated in a filter bag, and effective impurity removal cannot be realized, so that the mixed bacteria breeding, the anaerobic ammonium oxidation bacteria growth are slow, and the reaction efficiency is influenced.

SUMMERY OF THE UTILITY MODEL

The utility model aims to overcome the defects of the prior art, and provides an anammox drainage impurity removal device which can prevent anammox flora from blocking a filter bag, improve drainage efficiency, automate drainage, reduce labor cost, improve reaction efficiency, solve the problems of drainage and impurity removal, discharge a large amount of impurity bacteria and reserve the anammox flora to the maximum extent aiming at the technical problems that overflow type drainage schemes, pumping type drainage schemes and the like are difficult to inhibit strain loss, the drainage speed is reduced due to strain adhesion to the filter bag, impurity removal is difficult due to breeding of impurity bacteria due to fluctuation of inlet water quality and the like.

In order to solve the technical problems, the utility model adopts the following technical scheme.

The utility model provides an anaerobic ammonia oxidation drainage edulcoration device, includes the filtering surface, locates the bacterial backward flow guide plate of filtering surface bottom and locates the baffle that dabbles of bacterial backward flow guide plate both sides, be equipped with bacterial backward flow mouth on the bacterial backward flow guide plate, be equipped with the flushing pipe on the baffle that dabbles, be equipped with on the flushing pipe and extend the first washing nozzle of filtering surface top and extending second washing nozzle on the bacterial backward flow guide plate.

As a further improvement of the technical scheme, the filter surface and the strain reflux guide plate form an included angle of 60-75 degrees.

As a further improvement of the technical scheme, the filter surface is provided with a net-shaped reinforcing rib, and the water splashing baffle and the strain backflow guide plate are both connected with the net-shaped reinforcing rib.

As a further improvement of the technical scheme, the filtering surface is connected with the reticular reinforcing ribs through a fixing component.

As a further improvement of the technical scheme, the fixing component comprises a fixing ring arranged on the filtering surface and fixing nails arranged on the reticular reinforcing ribs, and the fixing nails are connected with the fixing ring.

As a further improvement of the above technical scheme, the anammox drainage impurity removal device further comprises an anammox reactor, a cyclone separator and a main pipe, wherein a centrifugal pump is arranged on the main pipe, one end of the main pipe is connected with the anammox reactor, the other end of the main pipe is provided with a first branch pipe and a second branch pipe, a first valve is arranged on the first branch pipe, the pipe orifice of the first branch pipe is opposite to the filtering surface, the cyclone separator is arranged on the second branch pipe, second valves are respectively arranged on the second branch pipe at the front end and the rear end of the cyclone separator, and the pipe orifice of the second branch pipe is opposite to the filtering surface.

As a further improvement of the technical scheme, one end of the main pipe in the anaerobic ammonia oxidation reactor is provided with a floating body and a bottom valve.

As a further improvement of the technical scheme, the filtering surface consists of 100-mesh filtering holes.

As a further improvement of the technical scheme, the flushing pipe, the centrifugal pump, the first valve and the second valve are all connected with a PLC automatic control system.

The technical problems to be solved by the utility model are as follows:

1. the utility model aims to solve the problems that part of strains are lost and the anaerobic ammonia oxidation reactor is difficult to utilize when drained water is used.

2. The utility model aims to solve the problems of low drainage and water filtration speed and prolonged batch time of the anaerobic ammonia oxidation reactor.

3. The utility model solves the problems that the drainage of the anaerobic ammonia oxidation reactor needs to be watched manually and is time-consuming and labor-consuming.

4. The utility model aims to solve the problem that the filter bag is frequently damaged due to excessive strains in the bag when the anaerobic ammonia oxidation reactor discharges water.

5. The utility model aims to solve the problems that mixed bacteria are bred and impurities are difficult to remove due to fluctuation of the water quality of inlet water of the anaerobic ammonia oxidation reactor.

Compared with the prior art, the utility model has the advantages that:

(1) the anaerobic ammonia oxidation drainage impurity removal device integrates drainage, filtering surface cleaning and strain impurity removal, and has the advantages of high integration utilization rate, detachability, strong flexibility, small occupied area, high space utilization rate, capability of saving a large amount of manpower and high economic value. This anaerobic ammonia oxidation drainage edulcoration device cultivates the degree of difficulty low, and the bacterial enrichment is efficient, sets up slice filter surface and wash tube (can be automatic), has realized the online cleaning of the unmanned operation of filter screen, has guaranteed drainage efficiency, shortens a large amount of drainage time, saves a large amount of manpower electric power, realizes extremely high economic benefits.

(2) According to the utility model, by arranging the hydrocyclone, uninterrupted full-automatic strain impurity removal is realized during the operation of the anaerobic ammonia oxidation reactor, the anaerobic ammonia oxidation reactor can operate for 24 hours, the system stability is high, the culture speed is high, manpower is greatly liberated, and the stability of the strain growth environment in the anaerobic ammonia oxidation reactor is maintained to the maximum extent.

(3) The utility model shortens the drainage time of the anaerobic ammonia oxidation reactor, obviously improves the effective running time in the reactor, prolongs the duration of each reaction batch, ensures that the anaerobic ammonia oxidation reactor has higher treatment efficiency than the common anaerobic ammonia oxidation reactor, and simultaneously ensures that the activity of the strain is kept in a higher state. The time of each batch is flexibly set, the operation is convenient, and a large amount of labor cost is reduced.

(4) The utility model can selectively adjust the operation time of impurity removal and drainage according to the difference of the treated water quality, has strong flexibility, is suitable for the anaerobic ammonia oxidation reactor under various working conditions, and greatly saves the equipment cost.

(5) The utility model has high automation degree of drainage and impurity removal, realizes full automation of impurity removal and drainage, and can realize no manual participation by means of PLC.

Drawings

FIG. 1 is a schematic structural diagram of an anammox wastewater impurity removal device in example 1 of the present invention.

FIG. 2 is a front view of a first mechanism of an anammox wastewater impurity removal device in example 1 of the present invention.

FIG. 3 is a plan view of a first means of an anammox wastewater purification apparatus in example 1 of the present invention.

FIG. 4 is a schematic structural view of a second mechanism of an anammox wastewater impurity removal device in example 1 of the present invention.

FIG. 5 is a schematic structural view of the mesh-like reinforcing ribs of the anammox drainage impurity removal device in example 1 of the present invention.

FIG. 6 is a schematic diagram showing the structure of the filtration surface of the anammox wastewater purification apparatus in example 1 of the present invention.

Illustration of the drawings:

101. mesh reinforcing ribs; 102. a splash baffle; 103. a strain backflow guide plate; 104. a strain return port; 201. filtering surface; 202. a fixing ring; 203. fixing nails; 301. a first flushing nozzle; 302. a flush tube; 303. a second flushing nozzle; 401. a centrifugal pump; 402. a drain pipe; 403. a first valve; 404. a cyclone separator; 405. a main pipe; 406. a second valve; 407. a float; 408. a bottom valve; 409. an anammox reactor; 410. a first branch pipe; 411. a second branch pipe.

Detailed Description

The utility model is further described below with reference to the drawings and specific preferred embodiments of the description, without thereby limiting the scope of protection of the utility model.

Example 1:

as shown in fig. 1 to 6, the anammox water drainage impurity removal device comprises a filtering surface 201, a strain reflux guide plate 103 arranged at the bottom end of the filtering surface 201, and a splash baffle plate 102 arranged at two sides of the strain reflux guide plate 103, wherein a strain reflux port 104 is arranged on the strain reflux guide plate 103, a flushing pipe 302 is arranged on the splash baffle plate 102, and a first flushing nozzle 301 extending above the filtering surface 201 and a second flushing nozzle 303 extending above the strain reflux guide plate 103 are arranged on the flushing pipe 302.

In this embodiment, the filtering surface 201 and the strain reflux guiding plate 103 form an included angle of 60 °.

In this embodiment, the filtering surface 201 is provided with the mesh-shaped reinforcing ribs 101, and the splash baffle 102 and the strain reflux guide plate 103 are connected to the mesh-shaped reinforcing ribs 101.

In this embodiment, the filtering surface 201 is connected to the mesh reinforcement 101 by a fixing member.

In this embodiment, the fixing assembly includes a fixing ring 202 disposed on the filtering surface 201 and fixing nails 203 disposed on the mesh-shaped reinforcing ribs 101, and the fixing nails 203 are connected to the fixing ring 202.

The filtering surface 201, the net-shaped reinforcing ribs 101, the strain reflux guide plate 103, the strain reflux port 104, the splash baffle 102, the fixing ring 202, the fixing nail 203, the flushing pipe 302, the first flushing nozzle 301 and the second flushing nozzle 303 together form a drainage impurity removal and strain recovery mechanism of the anaerobic ammonia oxidation drainage impurity removal device, and the drainage impurity removal and strain recovery mechanism is used as a first mechanism, as shown in fig. 2 and 3.

In this embodiment, the anammox drainage impurity removal device further comprises an anammox reactor 409, a cyclone separator 404 and a main pipe 405, a centrifugal pump 401 is arranged on the main pipe 405, one end of the main pipe 405 is connected with the anammox reactor 409, the other end of the main pipe is provided with a first branch pipe 410 and a second branch pipe 411, the pipe orifice of the first branch pipe 410 is opposite to the filtering surface 201, the cyclone separator 404 is arranged on the second branch pipe 411, the pipe orifice of the second branch pipe 411 is opposite to the filtering surface 201, the first branch pipe 410 is provided with a first valve 403, and the second branch pipe 411 is respectively provided with a second valve 406 at the front end and the rear end of the cyclone separator 404. The first branch pipe 410 and the second branch pipe 411 can be merged into the water discharge pipe 402, the first branch pipe 410 is an overtaking pipe, and the water flow in the first branch pipe 410 can be enabled to overtake the cyclone separator 404 and enter the water discharge pipe 402 by controlling the first valve 403 and the second valve 406.

In this embodiment, a float 407 and a bottom valve 408 are provided at one end of the main pipe 405 in the anammox reactor 409.

The anammox reactor 409, the cyclone separator 404, the main pipe 405, the centrifugal pump 401, the drain pipe 402, the first valve 403, the second valve 406, the floating body 407, the bottom valve 408, the first branch pipe 410, and the second branch pipe 411 together constitute an anammox drain and strain impurity removal mechanism of the anammox drain impurity removal device, and as a second mechanism, as shown in fig. 4, they are.

The utility model discloses an anaerobic ammonia oxidation drainage impurity removal device, which is an integrated device integrating anaerobic ammonia oxidation drainage, strain recovery, filter bag cleaning and strain impurity removal, and comprises the following components in parts and functional description:

the net-shaped reinforcing ribs 101 are net-shaped stainless steel wire reinforcing ribs, are obliquely arranged at an angle of 60-75 degrees with the horizontal line of the ground, and are used for receiving the filtering surface 201, so that the filtering surface 201 is fully unfolded, the contact area between drainage and the filtering surface 201 is maximized, and the filtration flux is improved.

The splash baffle plate 102 is inclined towards the surface of the reticular reinforcing rib 101 so as to intercept the drainage splashed up due to the high pumping water pressure of the centrifugal pump 401, ensure the interception rate of strains and improve the interception amount of the strains.

The strain reflux guide plate 103 is connected with the bottom of the reticular reinforcing rib 101 (namely the bottom of the filtering surface 201), inwards concaves for a certain angle, and guides strains and drainage which drip from the reticular reinforcing rib 101 to the strain reflux guide plate 103 so as to enable the strains and the drainage to enter the strain reflux port 104 without being blocked. Meanwhile, the strain backflow guide plate 103 is connected with the ground, so that the whole system is prevented from inclining and collapsing, and a supporting effect is achieved.

The strain return port 104 is connected with the concave bottom of the strain return guide plate 103 and connected with the anaerobic ammonia oxidation reactor 409, so that returned strains and drained water are recycled to the anaerobic ammonia oxidation reactor in a water falling area as small as possible, and the standing effectiveness of the anaerobic ammonia oxidation reactor 409 is guaranteed as much as possible.

The filtering surface 201 is a sheet-shaped filter bag, and the filtering surface 201 is used as the core of the whole water drainage and impurity removal device for intercepting strains, draining water and filtering mixed bacteria water. The filtering surface 201 is composed of 100-mesh filtering holes, and the anaerobic ammonia oxidation bacteria flora is basically over 100 meshes according to experience, so that the filtering surface 201 can effectively intercept anaerobic ammonia oxidation bacteria flora with various particle sizes, and the mixed bacteria far smaller than the particle size are sent to the filtering surface 201 through the high-water pressure of the centrifugal pump 401 to be filtered and discharged out of the system, thereby realizing the impurity removal of strains.

As shown in fig. 5 and 6, the fixing rings 202 are respectively provided at four corners of the filtering surface 201 and fixed by a steel ring. The fixing nails 203 are provided at four corners of the mesh reinforcement 101, and correspond to the fixing rings 202 in position one by one. The fixing nails 203 fully unfold the filtering surface 201, fix the four fixing rings 202 on each fixing nail 203, and realize fastening through the elasticity of the filtering surface 201, thereby realizing the fixation of the filtering surface 201 and the smooth backflow of strains and drainage on the filtering surface 201.

The flushing pipe 302 is a flushing water pipe and supplies cleaning water to the first flushing nozzle 301. The first washing nozzle 301 is a nozzle of a washing water pipe, and the first washing nozzle 301 is arranged at two corners of the upper end of the reticular reinforcing rib 101 and forms a certain angle with the bottom edge of the surface of the reticular reinforcing rib 101. The washing water in the first washing nozzle 301 is pumped to the surface of the filtering surface 201 through the washing pipe 302, strains on the surface of the filtering surface 201 are washed away from the filtering surface 201 and slide down to the strain backflow guide plate 103 to be carried and recovered, so that the cleaning of the filtering bag is realized, the problem that the filtering bag is blocked due to the fact that the filtering bag is difficult to discharge in time due to anaerobic ammonia oxidation strains in the traditional filtering bag is solved, the drainage efficiency is improved, the automation of drainage is realized, and the labor cost is liberated.

The second washing nozzle 303 is a water diversion nozzle extending to the strain reflux guide plate 103, the specific position can be changed according to actual conditions, the second washing nozzle 303 intercepts the net-shaped reinforcing ribs 101 and slides down to the strain reflux guide plate 103, the strain water mixture continues to be impacted by clear water, and the strain water mixture is guided and pushed to the strain reflux port 104 by water flow to complete recovery.

The upper flushing pipe 302, the first flushing nozzle 301, and the second flushing nozzle 303 constitute a filter bag cleaning mechanism.

The centrifugal pump 401 is a variable frequency type centrifugal pump, in the stage of water discharging and impurity removing, for quick water discharging and impurity removing, the frequency is increased by the centrifugal pump 401, the second valve 406 and the first valve 403 are opened, surface water of the anaerobic ammonia oxidation reactor 409 sequentially passes through the bottom valve 408 and the main pipe 405, is pumped to the first branch pipe 410 while passing through the cyclone separator 404, enters the drain pipe 402 while passing through the cyclone separator 404, impurities are removed by cyclone while passing through the cyclone separator 404, light mixed bacteria enter the drain pipe 402 via the second branch pipe 411 and are sent to the filtering surface 201, and heavier anaerobic ammonia oxidation bacteria flora flows back to the anaerobic ammonia oxidation reactor 409. In the impurity removal stage, because of the requirement of no drainage time limit, the frequency of the centrifugal pump 401 is reduced, the surface water of the anaerobic ammonia oxidation reactor 409 is pumped to the cyclone separator 404 for cyclone impurity removal by closing the first valve 403 and opening the second valve 406 and passing the surface water of the anaerobic ammonia oxidation reactor 409 through the bottom valve 408 and the main pipe 405 in sequence, and light mixed bacteria enter the drain pipe 402 through the second branch pipe 411 and are conveyed to the filtering surface 201.

The drain pipe 402 is an anammox drain pipe made of a hard PE pipe to guide the drain water pumped by the centrifugal pump 401 to enter the surface of the filtering surface 201.

The first valve 403 and the second valve 406 are valves capable of controlling the anammox drain pipe 402, and the system drainage or impurity removal is controlled by opening or closing the valves.

The lower end of the cyclone 404 is a reflux unit and is connected to the interior of the anammox reactor 409. During the impurity removal stage, centrifugal pump 401 pumps the surface water of anammox reactor 409 to cyclone 404.

According to experimental data, the anaerobic ammonium oxidation bacteria flora is over 100 meshes and can be clearly seen by naked eyes, and the particle sizes of mixed bacteria (mainly nitrobacteria and denitrifying bacteria) are less than 100 meshes and can not be seen by naked eyes. Therefore, the utility model adopts a filter screen which can intercept anaerobic ammonium oxidation strains and filter mixed bacteria, namely a 100-mesh filter screen.

Therefore, by cyclone separation, the heavy anaerobic ammonia oxidation bacteria with large particle size flow back to the anaerobic ammonia oxidation reactor 409 through the lower end of the cyclone separator 404, and the light mixed bacteria with small particle size flow into the drain pipe 402 and are pumped to the surface of the filtering surface 201 for re-interception and further impurity removal.

The main pipe 405 is a pumping water pipe, the main pipe 405 is made of a double-layer steel wire hose and is directly connected with the centrifugal pump 401, when the centrifugal pump 401 is started, the main pipe is completely immersed below the liquid level of the anaerobic ammonia oxidation reactor 409 through the bottom valve 408, the water in the pipe is ensured to be completely filled with the water in the anaerobic ammonia oxidation reactor, and the water pumping operation under high and low frequencies is realized.

The second valve 406 is a purge line valve, and the system is controlled to drain water or purge by opening or closing the second valve 406.

The floating body 407 is a plastic floating ball, and the whole system is always used for the surface water of the anaerobic ammonia oxidation reactor 409 through the support of the floating body 407, so that compared with a decanter which is expensive in cost and poor in actual effect, the floating body 407 saves a large amount of engineering space, is convenient to maintain and reduce a large amount of cost.

The bottom valve 408 is a water pumping head, and the bottom valve 408 is suspended with a certain proportion of balance weight, so that the floating body 407 and the bottom valve 408 are integrally prevented from inclining and overturning due to large water pressure and heavy self weight of the main pipe 405 during water pumping; meanwhile, the bottom valve 408 is matched with the floating body 407 and also plays a role in fixing the main pipe 405, so that the bottom valve 408 is prevented from being exposed out of the water due to a large angle with the main pipe 405, and the system is prevented from being out of service.

According to the process condition, the operation of the anaerobic ammonia oxidation drainage impurity removal device can be divided into the following stages:

first, each batch of water draining (impurity removing) stage:

1. inspection step before drainage

Before each batch of water is drained, the first valve 403 is opened, and the second valve 406 is closed; check if the foot valve 408 is out of water (this problem does not occur during normal use unless the foot valve 408 is loose), if the surface of the filtering surface 201 is clean, if the fixing ring 202 and the fixing pin 203 are fixed.

2. Step of draining

When water is drained, the first flushing nozzle 301 and the second flushing nozzle 303 are opened first, and clean water in the flushing pipe 302 is sprayed out through the first flushing nozzle 301 and the second flushing nozzle 303. The first flushing nozzle 301 wets the surface of the filtering surface 201 and forms a flowing water film from the filtering surface 201 to the strain reflux guide plate 103. After confirming that there is clear water in the strain return port 104, the flow rate is increased at high frequency (100 m)³H or so) starting the centrifugal pump 401, leading the surface water of the anaerobic ammonia oxidation reactor 409 which is still standing and precipitating to enter the centrifugal pump 401 through the bottom valve 408 and the main pipe 405, and pumping to the surface of the filtering surface 201 through the drain pipe 402. Due to the interception function of the filtering surface 201, the mixed bacteria particles with the particle size of less than 100 meshes can penetrate through the filtering holes with 100 meshes under high pressure, and the particle size is larger thanThe spherical flora of 100 mesh anammox bacteria is intercepted by the filtering surface 201, a water film formed by the spraying of the first flushing nozzle 301, the first flushing nozzle 301 and a part of filtered water of the drain pipe 402 slide down to the strain reflux guide plate 103 together, a large amount of water can be discharged through the filtering surface 201 on the way, but because the first flushing nozzle 301 and the drain pipe 402 continuously discharge water, the finally intercepted spherical flora of anammox bacteria can slide down to the strain reflux guide plate 103, and is guided to the strain reflux port 104 through the clear water of the second flushing nozzle 303 and the concave strain reflux guide plate 103 to be refilled to the anammox reactor 409 together with the reflux water. Because the caliber of the connecting pipe of the strain return port 104 is small, the water flow in the pipe cannot cause effective negative influence on the precipitation effect of the anaerobic ammonia oxidation reactor 409. Meanwhile, the water film on the surface of the filtering surface 201 continuously washes the anaerobic ammonia oxidizing bacteria on the filtering surface 201 to the strain reflux guide plate 103, so that the surface of the filtering surface 201 can continuously filter the mixed bacteria and intercept the anaerobic ammonia oxidizing bacteria, and the online cleaning without manual operation is realized.

3. Post-drain cleaning step

After each batch of water is discharged, the centrifugal pump 401 is closed, and the anaerobic ammonia oxidation reactor 409 is not pumped and filtered; the first flushing nozzle 301 and the second flushing nozzle 303 are still opened for a period of time, so that the surface of the filtering surface 201 is flushed by clean water, and the residual strains are flushed back into the anaerobic ammonia oxidation reactor 409. Since water must be supplied after each batch of water is drained, the first and

second washing nozzles

301 and 303 can clean the filtering surface 201 to be clean without being closed during the period. After the cleaning is finished, the first and

second flushing nozzles

301 and 303 are closed.

Second, impurity removal stage

1. Inspection step before impurity removal

The steps are checked before the water is drained, but instead the first valve 403 is closed and the second valve 406 is opened.

2. Step of removing impurities

When water is drained, the first flushing nozzle 301 is opened first, clean water in the flushing pipe 302 is sprayed out through the first flushing nozzle 301, the surface of the filtering surface 201 is wetted, and a flowing water film from the filtering surface 201 to the strain backflow guide plate 103 is formed. After the strain return opening 104 is confirmed to have clear water for return, the frequency is low (excellent)The flow rate is 6-15m³And h) starting the centrifugal pump 401, pumping the surface water of the anaerobic ammonia oxidation reactor 409 which is being stirred to the cyclone separator 404, performing cyclone separation, and then refluxing anaerobic ammonia oxidation bacteria with heavier mass and larger particle size to the anaerobic ammonia oxidation reactor 409 through the lower end of the cyclone separator 404, and introducing mixed bacteria with lighter mass and smaller particle size to the drain pipe 402 and pumping to the surface of the filtering surface 201. The flow is the same as the flow in the same period of the drainage step.

3. Cleaning step after impurity removal

And a step of cleaning after draining. Because a small amount of anammox reactor pool water must be discharged for impurity removal, the first flushing nozzle 301 can be opened for a long time to clean the whole system and simultaneously carry out a small amount of water replenishment on the anammox reactor 409.

Because the process operation flow is not manually participated, the system can also be connected with a PLC automatic control system at the positions of the flushing pipe 302, the centrifugal pump 401, the first valve 403 and the second valve 406, the full-automatic operation of the full process is realized, the whole power consumption of the device is low, and the total power supply of a single PLC system is enough to provide load.

The PLC is a programmable logic controller, and is a digital operation electronic system specially designed for application in industrial environment. It uses a programmable memory, in which the instructions for implementing logical operation, sequence control, timing, counting and arithmetic operation are stored, and utilizes digital or analog input and output to control various mechanical equipments or production processes. The PLC automatic control system adopted by the utility model can be purchased commercially and can be used after conventional debugging.

The sludge anaerobic ammonia oxidation drainage and impurity removal device is innovatively designed and optimized, and the integrated drainage and impurity removal device is adopted, so that the full automation of anaerobic ammonia oxidation drainage is realized, the labor cost is reduced, the efficient impurity removal is realized, and the stable operation of an anaerobic ammonia oxidation reactor is ensured. The device provided by the utility model solves the problem that anaerobic ammonium oxidation bacteria block the filter bag, improves the drainage efficiency, solves the problem that the drainage of the anaerobic ammonium oxidation reactor cannot be automated, reduces the labor cost, and improves the reaction efficiency.

The foregoing is merely a preferred embodiment of the utility model and is not intended to limit the utility model in any manner. Although the present invention has been described with reference to the preferred embodiments, it is not intended to be limited thereto. Those skilled in the art can make many possible variations and modifications to the disclosed embodiments, or equivalent modifications, without departing from the spirit and scope of the utility model, using the methods and techniques disclosed above. Therefore, any simple modification, equivalent replacement, equivalent change and modification made to the above embodiments according to the technical essence of the present invention are still within the scope of the protection of the technical solution of the present invention.

Claims

1. The utility model provides an anaerobic ammonia oxidation drainage edulcoration device, its characterized in that, includes filtering surface (201), locates strain backward flow guide plate (103) of filtering surface (201) bottom and locates splash baffle (102) of strain backward flow guide plate (103) both sides, be equipped with strain backward flow mouth (104) on strain backward flow guide plate (103), be equipped with flushing pipe (302) on splash baffle (102), be equipped with on flushing pipe (302) and extend to first washing mouth (301) of filtering surface (201) top and extend second washing mouth (303) on strain backward flow guide plate (103).

2. The anammox water drainage impurity removal device according to claim 1, wherein an included angle of 60-75 degrees is formed between the filtering surface (201) and the strain reflux guide plate (103).

3. The anammox water drainage impurity removal device according to claim 1, wherein a net-shaped reinforcing rib (101) is arranged on the filtering surface (201), and the splash baffle (102) and the strain reflux guide plate (103) are both connected with the net-shaped reinforcing rib (101).

4. The anammox drainage impurity removal device according to claim 3, wherein the filtering surface (201) is connected with the mesh reinforcing ribs (101) through a fixing component.

5. The anammox drainage impurity removal device according to claim 4, wherein the fixing component comprises a fixing ring (202) arranged on the filtering surface (201) and fixing nails (203) arranged on the reticular reinforcing ribs (101), and the fixing nails (203) are connected with the fixing ring (202).

6. The anammox drainage edulcoration apparatus of any one of claims 1 to 5, the anaerobic ammonia oxidation drainage impurity removal device also comprises an anaerobic ammonia oxidation reactor (409), a cyclone separator (404) and a main pipe (405), a centrifugal pump (401) is arranged on the main pipe (405), one end of the main pipe (405) is connected with the anaerobic ammonia oxidation reactor (409), the other end of the main pipe is provided with a first branch pipe (410) and a second branch pipe (411), a first valve (403) is arranged on the first branch pipe (410), the pipe orifice of the first branch pipe (410) is opposite to the filtering surface (201), the cyclone separator (404) is arranged on the second branch pipe (411), the second branch pipe (411) is respectively provided with a second valve (406) at the front end and the rear end of the cyclone separator (404), the orifice of the second branch pipe (411) is opposite to the filtering surface (201).

7. The anammox drainage impurity removal device according to claim 6, wherein a floating body (407) and a bottom valve (408) are provided at one end of the main pipe (405) in the anammox reactor (409).

8. The anammox drainage impurity removal device according to any one of claims 1 to 5, wherein the filtering surface (201) consists of 100 mesh filtering holes.

9. The anammox drainage impurity removal device according to claim 6, wherein the flushing pipe (302), the centrifugal pump (401), the first valve (403) and the second valve (406) are all connected with a PLC automatic control system.