A sewage treatment nitrification tank and its application method

Abstract

The present application relates to sewage treatment technical field, propose a kind of sewage treatment nitrification tank and its application method, including sewage pool, aeration pipeline, support, aeration disc, net rack and net cover, wherein, aeration pipeline is set in sewage pool with longitudinal and transverse staggered structure;Support is provided with multiple in sewage pool, and support staggered place of aeration pipeline;Aeration disc is connected with staggered place of aeration pipeline;Net rack and net cover are provided with multiple, and are supported by support, to cover aeration pipeline and aeration disc, and net cover corresponds aeration disc.The present application is set in nitrification tank structure, support is used to support net rack and net cover, so it can be covered by net rack to the clearance of aeration pipeline and adjacent pipeline, and net cover can be covered to aeration disc, so that nitrification tank has a flat net surface, play the role of interception net, so that filler cannot contact aeration disc, to avoid the problem of pipeline blockage;And it is convenient for maintenance work for staff.

Description

TECHNICAL FIELD

[0001] The present application relates to the technical field of sewage treatment, in particular to a sewage treatment nitrification tank and an application method thereof. BACKGROUND

[0002] In industrial sewage treatment, nitrifying bacteria play an important role in removing ammonia nitrogen. At present, a corresponding intercepting net is usually arranged in the nitrifying bacteria treatment tank to intercept the filler, so as to avoid the problem of filler reduction in the sewage treatment process, and also prevent the problem of aeration pipe blockage caused by filler accumulation.

[0003] The utility model with the publication number CN216639091U discloses a sewage treatment device with suspended filler interception structure, which comprises a treatment tank and a microporous aerator. The microporous aerator is assembled in the treatment tank. The treatment tank is provided with a water outlet. The treatment tank is provided with an interception mechanism. The interception mechanism comprises an L-shaped filter screen, an electric sliding table, a supporting rod and an L-shaped scraper. The L-shaped filter screen is assembled in the treatment tank. The electric sliding table is assembled in the treatment tank. A reinforcing piece is arranged between the electric sliding table and the treatment tank. The supporting rod is assembled in the electric sliding table. The L-shaped scraper is arranged on the supporting rod. The L-shaped scraper is provided with a cleaning brush.

[0004] In the above technical solution, the filter screen is arranged to intercept the filler. However, the filler and the aeration mechanism are in the same treatment cavity, which may cause the problem of filler blocking the aeration mechanism. In addition, the aeration mechanism needs to be provided with a plurality of aeration pipes for connecting a plurality of aeration discs to perform aeration work, which leads to a complex internal structure and makes it inconvenient for personnel to maintain. After the filler and sludge are mixed and deposited, it is difficult for them to float up, which affects the subsequent water treatment effect and is not easy to clean. SUMMARY

[0005] Therefore, the present application provides a sewage treatment nitrification tank and an application method thereof, which can effectively prevent the filler from blocking the aeration pipe, separate the sludge and the filler, and facilitate subsequent cleaning, to solve the problems of the existing nitrification treatment tank, i.e. the filler is easy to block the aeration pipe, and the filler and the sludge are mixed to affect the subsequent water treatment and cleaning.

[0006] The technical solution of the present application is as follows:

[0007] On the one hand, the present application provides a sewage treatment nitrification tank, which comprises a sewage tank, an aeration pipe, a support, an aeration disc, a net rack and a net cover, wherein,

[0008] The aeration pipe is arranged in the sewage tank in a longitudinal and transverse staggered structure;

[0009] The support is arranged in the sewage tank in a plurality of positions and supports the staggered positions of the aeration pipe;

[0010] The aeration disc is connected with the aeration pipeline at the intersection of the aeration disc and the aeration pipeline;

[0011] The net frame and the net cover are provided in plurality and are supported by the support to cover the aeration pipeline and the aeration disc, and the net cover corresponds to the aeration disc.

[0012] On the basis of the above technical scheme, preferably, the support comprises a bottom plate, a top plate, a connecting rod, a lower support and an upper support, wherein,

[0013] The bottom plate is connected with the bottom wall of the sewage pool;

[0014] The top plate is arranged on the upside of the bottom plate, and the net frame and the net cover press the top plate;

[0015] One end of the connecting rod is connected with the top plate, and the other end is inserted with the bottom plate;

[0016] The lower support is arranged on the bottom plate and supports the aeration pipeline;

[0017] The upper support is arranged on the top plate and presses the aeration pipeline.

[0018] On the basis of the above technical scheme, preferably, the net frame and the net cover are in frame structure, and the inner side is provided with an intercepting net;

[0019] The corner of the net frame is provided with an arc-shaped notch, and the aeration disc corresponds to the arc-shaped notches of the four net frames;

[0020] The net cover is arranged in the arc-shaped notch and abuts against the support.

[0021] On the basis of the above technical scheme, preferably, further comprising an isolation net, and the support further comprises a supporting rod, wherein,

[0022] A plurality of supporting rods are arranged on the top plate, the supporting rod is inserted with the net frame, and at least one supporting rod penetrates through the net frame;

[0023] The isolation net is arranged on the supporting rod.

[0024] On the basis of the above technical scheme, preferably, further comprising a net cage, and the support further comprises a supporting rod, wherein,

[0025] A plurality of supporting rods are arranged on the top plate, the supporting rod is inserted with the net frame, and at least one supporting rod penetrates through the net frame;

[0026] The net cage is slidingly matched with the supporting rod penetrating through the net frame, and the net cage is filled with suspended filler.

[0027] On the basis of the above technical scheme, preferably, the aeration pipeline comprises a pipeline joint and a connecting pipe, wherein,

[0028] The pipeline joint has a plurality of through openings, and the through opening is provided in a diameter expansion structure to form an end face;

[0029] The connecting pipe is in communication with the through opening;

[0030] The cross-shaped notch is provided on the lower support, and has an arc-shaped structure in cross section and abuts against the peripheral surface and the end surface of the pipeline joint.

[0031] On the basis of the above technical scheme, preferably, the push-flow agitator is further included, the pipeline joint includes a plurality of four-way pipe joints, a plurality of five-way pipe joints and at least two right-angle joints, wherein,

[0032] The four-way pipe joint and the five-way pipe joint are in communication with the connecting pipe and the aerator, and the right-angle joint is in communication with the connecting pipe;

[0033] The two right-angle joints correspond to the supports for supporting and fixing the push-flow agitator, and the push-flow agitator is fixedly connected with the inner wall of the sewage pool.

[0034] On the basis of the above technical scheme, preferably, the push-flow agitator includes a support plate, a carrier, a side rod, a sliding seat and an agitator body, wherein,

[0035] The support plate corresponds to the right-angle joint and abuts against the top plate;

[0036] The carrier is arranged on the support plate;

[0037] One end of the side rod is connected with the carrier, and the other end is connected with the inner wall of the sewage pool;

[0038] The sliding seat is in sliding connection with the carrier;

[0039] The agitator body is arranged on the sliding seat.

[0040] On the basis of the above technical scheme, preferably, the method further includes a dosing pipeline, an activation and deployment tank and a circulating pipeline, wherein,

[0041] The dosing pipeline is detachably connected with the plurality of net racks, and the dosing pipeline has a dosing pipe opening extending towards the net cover;

[0042] The water outlet of the activation and deployment tank is in communication with the sewage pool;

[0043] One end of the circulating pipeline is in communication with the sewage pool, and the other end is in communication with the activation and deployment tank.

[0044] On the other hand, the application provides a method for applying the above sewage treatment nitrification tank, including the following steps:

[0045] S1, inputting sewage into the sewage pool and filling in suspended filler to provide a carrier for nitrifying bacteria;

[0046] S2, providing dissolved oxygen into the sewage pool through the aeration pipeline and the aerator;

[0047] S3, drive the water body circulation by push flow agitator;

[0048] S4, when the nitrifying bacteria are impacted and the ammonia nitrogen removal efficiency is reduced, stop the input of sewage into the sewage pool, and close the aeration pipeline, so that the sewage is static and deposited for 30-60 minutes;

[0049] S5, through the circulating pipeline, the bottom mud water of the sewage pool is transported to the activation and deployment tank, and the capacity of the activation and deployment tank is set to 25%-35% of the capacity of the sewage pool;

[0050] S6, add nutrients such as ammonium sulfate with a concentration of 50-100g / m 3 , ferrous sulfate with a concentration of 30-50g / m 3 , dipotassium hydrogen phosphate with a concentration of 200-500g / m 3 , magnesium sulfate with a concentration of 30-50g / m 3 , calcium chloride with a concentration of 500-1000g / m 3 , and add sodium carbonate to adjust the pH value to 7.8-8.2, keep the temperature at 30-32℃, keep the dissolved oxygen at 2-4mg, stir for 12-36h, and form the strengthening bacteria agent;

[0051] S7, put the prepared strengthening bacteria agent into the nitrification sewage pool, monitor the pH value of the sewage pool during the process, and maintain the pH value at 7.8-8.2, and add sodium carbonate to adjust when the pH value is low;

[0052] S8, continuously detect the ammonia nitrogen content of the sewage in the sewage pool until the ammonia nitrogen content is reduced to below 5mg / L.

[0053] The sewage treatment nitrification tank and the application method thereof have the following beneficial effects compared with the prior art:

[0054] (1) In the structure of the nitrification tank, supports are arranged for supporting the net rack and the net cover, so that the net rack can cover the gaps of the aeration pipeline and the adjacent pipeline, and the net cover can cover the aeration disc, so that the nitrification tank has a flat net surface, which plays the role of intercepting net, so that the filler cannot contact the aeration disc, thereby avoiding the problem of pipeline blockage; at the same time, it can be used for supporting personnel, and is convenient for maintenance work of workers;

[0055] (2) When the sludge is deposited, it will be deposited on the lower side of the net rack and will not be mixed with the filler, so that the subsequent problem of the filler being unable to float up can be avoided, thereby ensuring that the nitrifying bacteria in the filler can continuously treat the sewage, so as to improve the water treatment effect;

[0056] (3) Both the net frame and the net cover are set as frame structures and have built-in interception nets. The net frame has arc-shaped slots. After the components are installed, the net frame and the net cover are supported by brackets. The net cover is positioned and limited by the net frame. This assembly structure makes it possible to connect the components without fasteners. It has the advantage of convenient disassembly and assembly, which facilitates the subsequent maintenance of the aeration pipes and aeration discs, and also facilitates the cleaning of the bottom of the pool.

[0057] (4) In the support structure, it is connected to the bottom of the sewage tank through the bottom plate and the aeration pipeline is supported by the lower support. After the top plate is installed, it can support the mesh frame and mesh cover, and simultaneously press it onto the aeration pipeline through the upper support. In this way, the weight of the mesh frame and mesh cover can be used to ensure the stability of the support structure itself, and at the same time ensure the stability of the aeration pipeline and aeration disc structure.

[0058] (5) By setting support rods in the support structure, the space frame can be limited to facilitate the assembly of multiple space frames; at the same time, the support rods can also be used to install isolation nets or net cages to accommodate the filler, so that the filler is gathered, which facilitates the subsequent processing of the filler.

[0059] (6) By setting up a pusher agitator, the sewage mixing treatment effect can be further improved. At the same time, in the pusher agitator structure, the support plate is used to support the top plate of the corresponding right-angle joint, so as to ensure the stability of the pusher agitator installation. Moreover, the right-angle joint here does not need to be equipped with an aeration plate, so there will be no interference problem. This structure makes full use of the function of the support, with a reasonable layout and convenient assembly. Attached Figure Description

[0060] To more clearly illustrate the technical solutions in the embodiments of the present invention or the prior art, the drawings used in the description of the embodiments or the prior art will be briefly introduced below. Obviously, the drawings described below are only some embodiments of the present invention. For those skilled in the art, other drawings can be obtained based on these drawings without creative effort.

[0061] Figure 1 This is a perspective view of the wastewater treatment nitrification tank of the present invention;

[0062] Figure 2 This is a perspective view of the mesh frame, aeration disc, and flow mixer of the wastewater treatment nitrification tank of the present invention;

[0063] Figure 3 This is a structural diagram of the grid layout of the nitrification tank for wastewater treatment according to the present invention;

[0064] Figure 4 This is a side view of the mesh frame, aeration disc, and flow mixer of the wastewater treatment nitrification tank of the present invention;

[0065] Figure 5 is a sectional view of the structure of point A in the wastewater treatment nitrification tank of the present application; Figure 4 is a sectional view of the structure of point A in the wastewater treatment nitrification tank of the present application;

[0066] Figure 6 is a perspective view of the installation of the isolation net in the wastewater treatment nitrification tank of the present application;

[0067] Figure 7 is an exploded view of the installation of the isolation net in the wastewater treatment nitrification tank of the present application;

[0068] Figure 8 is a sectional view of the structure of point B in the wastewater treatment nitrification tank of the present application; Figure 7 is a sectional view of the structure of point B in the wastewater treatment nitrification tank of the present application;

[0069] Figure 9 is a perspective view of the installation of the net cage in the wastewater treatment nitrification tank of the present application;

[0070] Figure 10 is a structural view of the lower support in the wastewater treatment nitrification tank of the present application;

[0071] Figure 11 is a structural view of the layout of the aeration pipeline in the wastewater treatment nitrification tank of the present application;

[0072] Figure 12 is a sectional view of the structure of point C in the wastewater treatment nitrification tank of the present application; Figure 11 is a sectional view of the structure of point C in the wastewater treatment nitrification tank of the present application;

[0073] Figure 13 is a system diagram of the wastewater treatment nitrification tank of the present application;

[0074] In the figure: 1, wastewater tank; 2, aeration pipeline; 21, pipeline joint; 211, four-way pipe joint; 212, five-way pipe joint; 213, right-angle joint; 22, connecting pipe; 201, through opening; 202, end face; 3, support; 31, bottom plate; 32, top plate; 33, connecting rod; 34, lower support; 3401, cross-shaped notch; 35, upper support; 36, support rod; 4, aeration disc; 5, net rack; 501, arc-shaped notch; 6, net cover; 7, isolation net; 8, net cage; 9, push-flow agitator; 91, support plate; 92, carrier; 93, side rod; 94, sliding seat; 95, agitator body; 10, dosing pipeline; 1011, dosing pipe opening; 11, activation and preparation tank; 12, circulation pipeline. DETAILED DESCRIPTION

[0075] The technical solutions in the embodiments of the present application will be described clearly and completely below in combination with the embodiments of the present application. Obviously, the described embodiments are only part of the embodiments of the present application, rather than all the embodiments. Based on the embodiments in the present application, all other embodiments obtained by those skilled in the art without creative labor fall within the protection scope of the present application.

[0076] As Figures 1-13 shown, the sewage treatment nitrification tank of the present application comprises a sewage tank 1, an aeration pipeline 2, a support 3, an aeration disc 4, a net rack 5, a net cover 6, a separation net 7, a net cage 8, a plug flow agitator 9, a dosing pipeline 10, an activation and deployment tank 11 and a circulation pipeline 12.

[0077] As Figures 1-4 shown, the aeration pipeline 2 is arranged in a crisscross structure in the sewage tank 1; the support 3 is arranged in multiple in the sewage tank 1 and supports the crisscrosses of the aeration pipeline 2; the aeration disc 4 is connected with the crisscrosses of the aeration pipeline 2.

[0078] As the above structure, in the nitrification tank structure, the sewage tank 1 is used for containing sewage, the aeration pipeline 2 is introduced into the sewage tank 1 from the outside, the outer end is connected with an aeration fan, and the inside is aerated through the aeration disc 4 to provide dissolved oxygen to promote biological treatment.

[0079] Specifically, the sewage tank 1 is provided with a water outlet weir for outflow of supernatant.

[0080] Among them, the aeration disc 4 is arranged at the crisscrosses of the aeration pipeline 2, and the support 3 is correspondingly arranged to support the aeration pipeline 2.

[0081] Specifically, the sewage tank 1 is provided with a liquid discharge valve, and the setting height of the liquid discharge valve is lower than the height of the net rack 5, so as to facilitate the discharge of the bottom sludge.

[0082] As Figures 1-4 shown, the net rack 5 and the net cover 6 are arranged in multiple and supported by the support 3 to cover the aeration pipeline 2 and the aeration disc 4, and the net cover 6 corresponds to the aeration disc 4.

[0083] As the above structure, when sewage treatment is carried out, fillers are applied in the sewage tank 1 as nitrifying bacteria carriers, wherein the net rack 5 is used to cover the rectangular space formed by the aeration pipeline 2 and cover the aeration pipeline 2 when the net rack 5 and the net cover 6 are arranged, and the net cover 6 is used to cover the aeration disc 4 to form a net plane in the sewage tank 1, which plays a role of a blocking net to isolate the fillers; at the same time, it can be used for supporting personnel to facilitate the maintenance work of the workers;

[0084] Thus, when water treatment is carried out, the fillers will not sink to the downside of the net rack 5 in the sedimentation stage, and then the fillers can be lifted by aeration to achieve the effect of mixing the fillers with sewage when the aeration is carried out through the aeration disc 4, so as to realize the full treatment of the sewage;

[0085] Meanwhile, the structure is provided with multiple net racks 5 and multiple net covers 6, when maintenance is needed, only the net cover 6 needs to be removed, so that the corresponding aeration disc 4 can be cleaned, maintained and replaced, and after the net rack 5 is removed, the aeration pipeline 2 can be maintained.

[0086] As shown in Figure 5 , Figure 7 , Figure 8 and Figure 10 , the support 3 comprises a bottom plate 31, a top plate 32, a connecting rod 33, a lower support 34 and an upper support 35, wherein the bottom plate 31 is connected with the bottom wall of the sewage tank 1; the top plate 32 is arranged on the upper side of the bottom plate 31, and the net rack 5 and the net cover 6 press the top plate 32; one end of the connecting rod 33 is connected with the top plate 32, and the other end is inserted with the bottom plate 31; the lower support 34 is arranged on the bottom plate 31 and supports the aeration pipeline 2; and the upper support 35 is arranged on the top plate 32 and presses the aeration pipeline 2;

[0087] As the above structure, the support 3 is used for supporting the aeration pipeline 2 and the net rack 5, and in application, the bottom plate 31 is connected with the bottom wall of the sewage tank 1, the aeration pipeline 2 is lapped on the lower support 34, then the top plate 32 is installed, the top plate 32 is inserted and positioned with the bottom plate 31 through the connecting rod 33, and at the same time, the upper side of the aeration pipeline 2 is pressed by the lower support 34, so as to fix the aeration pipeline 2 with the lower support 34;

[0088] Then, the net rack 5 is installed to press the top plate 32, and the net cover 6 is arranged corresponding to the top plate 32 to protect the aeration disc 4; specifically, the top plate 32 is arranged in an annular structure to leave an aeration space corresponding to the aeration disc 4 and the net cover 6;

[0089] Specifically, a guide rod can be arranged on the bottom wall of the sewage tank 1, and a hole is opened on the bottom plate 31, so that the bottom plate 31 is positioned on the guide rod.

[0090] After the net rack 5 and the net cover 6 are installed, the top plate 32 is pressed by the self-weight, so as to ensure the stability of the whole structure; without the aid of fasteners, the support has the advantages of convenient grouping, reduced application cost and improved maintenance convenience.

[0091] As shown in Figure 2 and Figure 3 , the net rack 5 and the net cover 6 are both in a frame structure, and an intercepting net is arranged inside; the corner of the net rack 5 is provided with an arc-shaped notch 501, and the aeration disc 4 corresponds to the arc-shaped notches 501 of the four net racks 5; the net cover 6 is arranged in the arc-shaped notch 501 and abuts against the support 3;

[0092] As the above structure, the net rack 5 and the net cover 6 are both arranged in a frame structure, and an intercepting net is arranged inside to intercept the filler, and the frame at the edge is used to abut against the top plate 32 of the support 3, so as to realize stable support.

[0093] The support rods can be arranged at the net frames 5 at the edge of the sewage tank 1 to cooperate with the support frames 3 to form stable support for the net frames 5.

[0094] Specifically, the corner of the net frame 5 is provided with an arc-shaped notch 501, so that a circular notch is formed after the four net frames 5 are spliced for installing the net cover 6, which facilitates positioning of the net cover 6 and has the advantage of convenient grouping.

[0095] As shown in Figures 6-8 The support frame 3 further comprises support rods 36, wherein a plurality of support rods 36 are arranged on the top plate 32, the support rods 36 are inserted into the net frames 5, and at least one support rod 36 penetrates through the net frame 5; and the isolation net 7 is arranged on the support rods 36.

[0096] According to the above structure, a plurality of support rods 36 are arranged on the support frame 3, and four support rods 36 can be arranged according to the layout of the net frame 5. Thus, when the net frame 5 is installed, the support rods 36 can be used for limiting and positioning the net frame 5. Thus, after the bottom plate 31 of the support frame 3 is positioned relative to the bottom wall of the sewage tank 1, the net frame 5 can be quickly arranged and installed by relying on the support rods 36, thereby facilitating subsequent installation of the net cover 6. Through the layer-by-layer positioning structure, the convenience of assembly is ensured.

[0097] Further, in this structure, the isolation net 7 is used to intercept the filler, so that the filler cannot contact the net frame 5 and the net cover 6, and the problem of pipeline blockage can be further prevented.

[0098] Specifically, when the isolation net 7 is installed, the support rods 36 can be used to support the isolation net 7, thereby meeting the requirement of quick disassembly and cleaning.

[0099] Further, a sleeve can be arranged at the bottom of the isolation net 7 to sleeve the support rod 36, so as to further ensure the stability of the installation of the isolation net 7.

[0100] In some application modes, since the isolation net 7 can intercept the filler, the inside of the net frame 5 can not be provided with an interception net.

[0101] In some embodiments, as shown in Figure 8 and Figure 9 The net cage 8 is in sliding cooperation with the support rod 36 penetrating through the net frame 5, and the net cage 8 is filled with suspended filler.

[0102] In this structure, the net cage 8 replaces the isolation net 7; in specific application, the filler is arranged in the net cage 8, which can avoid excessive diffusion of the filler. Since the filler is gathered, it will not be lost, which can reduce the cost of sewage treatment. Meanwhile, in subsequent application, the filler can be conveniently taken out for activation treatment.

[0103] Specifically, the net cage 8 is provided as a long strip cage structure, and the two ends of the net cage 8 are provided with sliding cylinders to be slidingly connected with the support rods 36; meanwhile, the net cage 8 is lowered and pressed against the net rack 5, so as to further ensure the stability of the overall structure.

[0104] In some embodiments, the upper side and the lower side of the net cage 8 are connected with a pipeline, and the pipeline is connected with an activation device through a circulating pump. In this way, under the action of the circulating pump, the sewage in the sewage pool 1 can be pumped out, and then the fillers in the net cage 8 are driven to flow out. When the activation is completed, the fillers can be transported back into the net cage 8.

[0105] Specifically, a valve is arranged at the connection between the pipeline and the net cage 8. When the fillers are transported back, the valve of the output pipeline is closed. In this way, the liquid transported back seeps out of the net cage 8, and the fillers can be left in the net cage 8, so as to improve the convenience of the activation of the fillers.

[0106] As shown in Figure 11 and Figure 12 , the aeration pipeline 2 comprises a pipeline joint 21 and a connecting pipe 22. The pipeline joint 21 has a plurality of through openings 201, and the through openings 201 are provided as an expanded-diameter structure to form an end face 202. The connecting pipe 22 is connected with the through openings 201. The lower support 34 is provided with a cross-shaped slot 3401, and the cross-shaped slot 3401 is provided as an arc-shaped structure in cross section and abuts against the peripheral surface and the end face 202 of the pipeline joint 21.

[0107] As described above, the aeration pipeline 2 is connected through a plurality of pipeline joints 21 and a plurality of connecting pipes 22 to form a longitudinal and transverse intersecting net structure.

[0108] The through openings 201 of the pipeline joint 21 are provided as an expanded-diameter structure, so that the pipeline joint 21 forms a stepped pipe structure.

[0109] In the structure of the support 3, the lower support 34 of the support 3 is provided with the cross-shaped slot 3401, so as to conveniently support the pipeline joint 21. Meanwhile, the lower support 34 also abuts against the end face 202 of the pipeline joint 21 to position the aeration pipeline 2 and ensure the overall stability of the aeration pipeline 2.

[0110] As shown in Figure 6 , Figure 11 and Figure 12 , the pipeline joint 21 comprises a plurality of four-way pipe joints 211, a plurality of five-way pipe joints 212 and at least two right-angle joints 213. The four-way pipe joints 211 and the five-way pipe joints 212 are connected with the connecting pipe 22 and the aeration disc 4, and the right-angle joints 213 are connected with the connecting pipe 22. The two right-angle joints 213 correspond to the support 3, which is used to support and fix the plug flow agitator 9. The plug flow agitator 9 is fixedly connected with the inner wall of the sewage pool 1.

[0111] As the above structure, the pipe joint 21 adopts various joints, according to the crisscross net structure, four-way pipe joint 211, five-way pipe joint 212 and right angle joint 213 are used, wherein the two ends of the right angle joint 213 are communicated with the connecting pipe 22, and are applied to the corner of the whole aeration pipe 2 system, the four-way pipe joint 211 and the five-way pipe joint 212 are connected with the aeration disc 4 through one port, and the remaining ports are communicated with the connecting pipe 22;

[0112] According to the structural layout of the aeration disc 4 and the net cover 6, only the four-way pipe joint 211 and the five-way pipe joint 212 are set, and the two right angle joints 213 are not set, the aeration disc 4 is not set, and the net cover 6 is not set, but the surrounding net frame 5 still forms a circular notch, and the corresponding support 3 is exposed, and the positioning of the plug flow agitator 9 is used for this position, and then the plug flow agitator 9 is fixed with the inside of the sewage tank 1, so that the whole connection is realized.

[0113] As shown in Figure 2 , the plug flow agitator 9 comprises a support plate 91, a carrier 92, a side rod 93, a sliding seat 94 and an agitator body 95, wherein the support plate 91 corresponds to the right angle joint 213 and abuts against the top plate 32; the carrier 92 is arranged on the support plate 91; one end of the side rod 93 is connected with the carrier 92, and the other end is connected with the inner wall of the sewage tank 1; the sliding seat 94 is slidingly connected with the carrier 92; the agitator body 95 is arranged on the sliding seat 94;

[0114] As the above structure, the plug flow agitator 9 is used to drive the sewage in the sewage tank 1 to circulate and mix, so as to improve the water treatment effect;

[0115] When assembling, the support plate 91 abuts against the top plate 32 corresponding to the right angle joint 213, so as to realize the overall support of the plug flow agitator 9, and then the side rod 93 is connected with the inner wall of the sewage tank 1, so as to realize the installation and fixation of the plug flow agitator 9;

[0116] In this structure, the agitator body 95 is slidingly connected with the carrier 92 on the support plate 91 through the sliding seat 94, so as to conveniently adjust the position of the agitator body 95, so that the sewage can be fully mixed; the structure fully combines the structural layout of the support 3 and the net frame 5, and after fixed connection, the overall strength is improved.

[0117] As shown in Figure 2 , Figure 4 , Figure 7 and Figure 13As shown, the dosing pipeline 10 is detachably connected with the plurality of net racks 5, and the dosing pipeline 10 has a pesticide spraying pipe opening 1011 extending to the net cover 6; the water outlet of the activation and deployment tank 11 is communicated with the sewage pool 1; one end of the circulating pipeline 12 is communicated with the sewage pool 1, and the other end is communicated with the activation and deployment tank 11;

[0118] As shown above, when sewage treatment is carried out, several reagents are usually added to react with the sewage, or a strong bacterium agent is added to promote the growth of microorganisms, and for this purpose, the dosing pipeline 10 is arranged.

[0119] When applied, the dosing pipeline 10 is installed on the net rack 5, and the two are fixed by bolts, so that the plurality of net racks 5 are integrated, thereby ensuring the stability of the relative position.

[0120] Among them, the dosing pipeline 10 is provided with a water inlet, and a plurality of pesticide spraying pipe openings 1011 are arranged on the side, and the pesticide spraying pipe openings 1011 correspond to the net cover 6, so that when the aerator 4 is aerated, the sewage and the reagent can be mixed simultaneously, which makes full use of the aeration function of the aerator 4, and is beneficial to improve the treatment effect of the sewage and save energy and reduce emissions.

[0121] Among them, the activation and deployment tank 11 is used to deploy the nutrient solution to activate the carrier and promote the growth of nitrifying bacteria, thereby ensuring the water treatment effect; the circulating pipeline 12 is composed of a pipeline and a circulating pump, and is used for the flow between the sewage pool 1 and the activation and deployment tank 11.

[0122] The method of the sewage treatment nitrification tank of the present application comprises the following steps:

[0123] S1, input the sewage into the sewage pool 1, and fill in the suspended filler to provide the carrier for the nitrifying bacteria;

[0124] S2, provide dissolved oxygen to the sewage pool 1 through the aeration pipeline 2 and the aerator 4;

[0125] S3, drive the water body to circulate by the plug flow agitator 9;

[0126] S4, when the nitrifying bacteria are impacted and the ammonia nitrogen removal efficiency is decreased, stop inputting the sewage into the sewage pool 1, and close the aeration pipeline 2 to make the sewage static sedimentation for 30-60 min;

[0127] S5, through the circulating pipeline 12, the bottom mud water of the sewage pool 1 is transported to the activation and deployment tank 11, and the capacity of the activation and deployment tank 11 is set to 25%-35% of the capacity of the sewage pool 1;

[0128] S6, add the nutrient substance ammonium sulfate with a concentration of 50-100 g / m 3 and the nutrient substance potassium dihydrogen phosphate with a concentration of 30-50 g / m3 ferrous sulfate, concentration of 200-500 g / m 3 dipotassium hydrogen phosphate, concentration of 30-50 g / m 3 magnesium sulfate, concentration of 500-1000 g / m 3 calcium chloride, and adding sodium carbonate to adjust the pH value to 7.8-8.2, maintaining the temperature at 30-32℃, maintaining the dissolved oxygen at 2-4 mg, stirring for 12-36 h, to form the fortified bacterial agent;

[0129] S7, the prepared fortified bacterial agent is put into the nitrification sewage tank 1, and the pH value of the sewage in the sewage tank 1 is monitored during the process, the pH value is maintained at 7.8-8.2, and sodium carbonate is added to adjust when the pH value is low;

[0130] S8, the ammonia nitrogen content of the sewage in the sewage tank 1 is continuously detected until the ammonia nitrogen content is reduced to below 5 mg / L.

[0131] The above only describes the preferred embodiments of the present application and is not intended to limit the present application, and any modification, equivalent replacement, improvement, etc. made within the spirit and principle of the present application shall be included in the protection scope of the present application.

Claims

1. A nitrification basin for wastewater treatment, characterized by: Including sewage pool (1), aeration pipeline (2), support (3), aeration disc (4), net frame (5) and net cover (6), wherein, The aeration pipeline (2) is arranged in the sewage pool (1) in a longitudinal and transverse staggered structure; The support (3) is provided with a plurality of in the sewage pool (1), and supports the staggered place of the aeration pipeline (2); The aeration disc (4) is communicated with the staggered place of the aeration pipeline (2); The net frame (5) and the net cover (6) are provided with a plurality of, and are supported by the support (3), to cover the aeration pipeline (2) and the aeration disc (4), and the net cover (6) corresponds to the aeration disc (4); The support (3) includes a bottom plate (31), a top plate (32), a connecting rod (33), a lower support (34) and an upper support (35), wherein the bottom plate (31) is connected with the bottom wall of the sewage pool (1); The top plate (32) is arranged on the upper side of the bottom plate (31), and the net frame (5) and the net cover (6) hold the top plate (32); One end of the connecting rod (33) is connected with the top plate (32), and the other end is inserted with the bottom plate (31); The lower support (34) is arranged on the bottom plate (31), and supports the aeration pipeline (2); The upper support (35) is arranged on the top plate (32), and holds the aeration pipeline (2); The net frame (5) and the net cover (6) are both frame structures, and the inner side is provided with an intercepting net; The sewage pool (1) is filled with filler, the filler is used as nitrifying bacteria carrier, and the filler is located on the side of the net frame (5) and the net cover (6) away from the bottom of the sewage pool (1); The corner of the net frame (5) is provided with an arc notch (501), and the aeration disc (4) corresponds to the arc notch (501) of the four net frames (5); The net cover (6) is arranged in the arc notch (501), and abuts against the support (3).

2. The wastewater treatment nitrification tank according to claim 1, characterized in that: Further comprising isolation net (7), the support (3) further comprises support rod (36), wherein, The support rod (36) is provided with a plurality of on the top plate (32), the support rod (36) is inserted with the net frame (5), and at least one of the support rod (36) penetrates the net frame (5); The isolation net (7) is arranged on the support rod (36).

3. The wastewater treatment nitrification tank of claim 1, wherein: Further comprising net cage (8), the support (3) further comprises support rod (36), wherein, The support rod (36) is provided with a plurality of on the top plate (32), the support rod (36) is inserted with the net frame (5), and at least one of the support rod (36) penetrates the net frame (5); The net cage (8) is slidably connected with the support rod (36) penetrating the net frame (5), and the net cage (8) is filled with suspended filler.

4. The wastewater treatment nitrification basin of claim 1, wherein: The aeration pipeline (2) includes pipeline joint (21) and connecting pipe (22), wherein, The pipeline joint (21) has a plurality of through ports (201), and the through port (201) is arranged in a diameter expanding structure to form an end face (202); The connecting pipe (22) is communicated with the through hole (201); The cross-shaped notch (3401) is arranged on the lower support (34) and has an arc-shaped cross section, and abuts against the peripheral surface of the pipe joint (21) and the end surface (202).

5. The wastewater treatment nitrification basin of claim 4, wherein: Further comprising a plug flow agitator (9), the pipe joint (21) comprises a plurality of four-way pipe joints (211), a plurality of five-way pipe joints (212) and at least two right-angle joints (213), wherein, The four-way pipe joint (211) and the five-way pipe joint (212) are communicated with the connecting pipe (22) and the aerator (4), and the right-angle joint (213) is communicated with the connecting pipe (22); The two right-angle joints (213) correspond to the support (3) for supporting and fixing the plug flow agitator (9), and the plug flow agitator (9) is fixedly connected with the inner wall of the sewage tank (1).

6. The wastewater treatment nitrification basin of claim 5, wherein: The plug flow agitator (9) comprises a support plate (91), a carrier (92), a side rod (93), a sliding seat (94) and an agitator body (95), wherein, The support plate (91) corresponds to the right-angle joint (213) and abuts against the top plate (32); The carrier (92) is arranged on the support plate (91); One end of the side rod (93) is connected with the carrier (92), and the other end is connected with the inner wall of the sewage tank (1); The sliding seat (94) is slidably connected with the carrier (92); The agitator body (95) is arranged on the sliding seat (94).

7. The wastewater treatment nitrification basin of claim 6, wherein: Further comprising a dosing pipe (10), an activation and deployment tank (11) and a circulation pipe (12), wherein, The dosing pipe (10) is detachably connected with a plurality of the net racks (5), and the dosing pipe (10) has a medicine injection pipe (1011) extending to the net cover (6); The water outlet of the activation and deployment tank (11) is communicated with the sewage tank (1); One end of the circulation pipe (12) is communicated with the sewage tank (1), and the other end is communicated with the activation and deployment tank (11).

8. A method of using the nitrification tank for sewage treatment according to claim 7, characterized in that, The method comprises the following steps: S1, inputting sewage into the sewage tank (1) and filling suspended filler to provide a carrier for nitrifying bacteria; S2, providing dissolved oxygen into the sewage tank (1) through the aeration pipe (2) and the aerator (4); S3, driving water circulation by the plug flow agitator (9); S4, when the nitrifying bacteria are impacted and the ammonia nitrogen removal efficiency is reduced, stopping the input of sewage into the sewage tank (1) and closing the aeration pipe (2) to make the sewage static and deposit for 30-60 minutes; S5, delivering the mud and water at the bottom of the sewage tank (1) to the activation and deployment tank (11) through the circulation pipe (12), and the capacity of the activation and deployment tank (11) is set to 25%-35% of the capacity of the sewage tank (1). S6, adding nutrients ammonium sulfate with a concentration of 50-100 g / m³, ferrous sulfate with a concentration of 30-50 g / m³, dipotassium hydrogen phosphate with a concentration of 200-500 g / m³, magnesium sulfate with a concentration of 30-50 g / m³, calcium chloride with a concentration of 500-1000 g / m³, and sodium carbonate to adjust the pH value to 7.8-8.2 into the activated preparation tank (11), maintaining the temperature at 30-32°C, maintaining the dissolved oxygen at 2-4 mg, stirring for 12-36 h, and forming the strengthened bacterial agent; S7, putting the prepared strengthened bacterial agent into the nitrification sewage tank (1), monitoring the pH value of the sewage tank (1) in the process, and maintaining the pH value at 7.8-8.2, and adding sodium carbonate to adjust when the pH value is low; S8, continuously detecting the ammonia nitrogen content of the sewage in the sewage tank (1) until the ammonia nitrogen content is reduced to below 5 mg / L.

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