Integrated treatment equipment for agricultural product processing sewage

Abstract

The utility model discloses agricultural product processing sewage integrated treatment equipment which comprises a box body, a filter, an anaerobic tank, an anoxic tank, an aerobic biological treatment tank and a control device are arranged in the box body, the filter is connected with a water inlet pipeline, the water inlet pipeline of the filter extends to the anaerobic tank, and a backflow device II is arranged between the anoxic tank and the anaerobic tank; a reflux device I is arranged between the aerobic biological treatment tank and the anoxic tank, and the reflux device I is used for refluxing part of sludge in the aerobic biological treatment tank to the anoxic tank; an aeration device and a suction pump are arranged on the aerobic biological treatment tank, and the aerobic biological treatment tank is used for aerating the aerobic biological treatment tank and discharging the produced standard water. According to the utility model, the sewage treatment aeration process level is improved, the energy utilization efficiency is improved, the least electric energy is utilized, the sewage discharge requirement is met, the industry low-carbon emission reduction is promoted, under the condition of the same gas supply amount, compared with the traditional micropore aeration, the gas supply amount is improved by more than 40%, and the device is very suitable for the treatment of raw water with the CODcr concentration of less than or equal to 3000mg / L, the BOD5 concentration of less than or equal to 1000mg / L, the B / C of more than or equal to 0.3 and the SS of less than or equal to 300mg / L.

Description

Technical Field

[0001] The utility model relates to the technical field of sewage treatment, in particular to an integrated sewage treatment device for agricultural product processing, which is applicable to the treatment solutions and devices for sewage generated from the processing of agricultural products such as Chinese-style dishes, potatoes, meat, and grains, and can also be used as a portable irrigation water reuse treatment device in hilly and mountainous areas. Background Technique

[0002] At present, there are nearly 90,000 large-scale agricultural product processing enterprises nationwide. The sewage treatment processes for sewage generated from the processing of agricultural products such as Chinese-style dishes, potatoes, meat, and grains mainly adopt technologies such as oxidation ditch process, SBR method, CASS process, contact oxidation method, biological aerated filter process (BAF), and MBR process. In the above process methods, the aeration link consumes a huge amount of energy, the energy utilization is insufficient, and the loss is serious. The energy cost caused by sewage treatment continues to rise, which exerts great pressure on the normal operation of enterprises. Content of the Utility Model

[0003] Aiming at the actual engineering problems of high energy consumption and low efficiency in sewage treatment projects, under the realistic situation of continuously rising energy costs, improving the sewage treatment aeration process level and energy utilization efficiency, using the least amount of electric energy to meet the sewage discharge requirements, and promoting low-carbon emission reduction in the industry play a positive role in enhancing the economic competitiveness of agricultural product processing enterprises and the overall technical level of the industry. For this reason, the utility model provides an integrated sewage treatment device for agricultural product processing.

[0004] The technical solution adopted is as follows:

[0005] An integrated sewage treatment device for agricultural product processing, the device includes a box body, a filter, an anaerobic tank, an anoxic tank, an aerobic biological treatment tank and a control device are arranged in the box body, a water inlet pipeline is connected to the filter, the water inlet pipeline extends to the anaerobic tank, a reflux device II is arranged between the anoxic tank and the anaerobic tank to form a reflux from the anoxic tank to the anaerobic tank; a reflux device I is arranged between the aerobic biological treatment tank and the anoxic tank for returning part of the sludge in the aerobic biological treatment tank to the anoxic tank; an aeration device and a suction pump are arranged on the aerobic biological treatment tank for aerating the aerobic biological treatment tank and discharging the up-to-standard water generated.

[0006] Preferably, the aerobic biological treatment tank includes an aerobic tank and a membrane module. The sewage in the anoxic tank enters the aerobic tank from above it. The membrane module is located in the aerobic tank. The aeration device includes a blower, an air pipe I, an air pipe II, and a pulse aeration device. The air pipe I and the air pipe II are respectively connected to the blower. The air pipe I extends to the bottom of the aerobic tank. The air pipe II is connected to the pulse aeration device, and the pulse aeration device is arranged at the bottom of the membrane module. The water production pipeline on the membrane module is connected to the suction pump.

[0007] Alternatively, preferably, the aerobic biological treatment tank includes an aerobic tank, a membrane tank, and a membrane module. The sewage in the anoxic tank enters the aerobic tank from above it. The membrane module is located in the membrane tank. The aerobic tank is communicated with the membrane tank. The aeration device includes a blower, an air pipe I, an air pipe II, and a pulse aeration device. The air pipe I and the air pipe II are respectively connected to the blower. The air pipe I extends to the bottom of the aerobic tank. The air pipe II is connected to the pulse aeration device, and the pulse aeration device is arranged at the bottom of the membrane module. The water production pipeline on the membrane module is connected to the suction pump.

[0008] Furthermore, the device further includes a clear water tank, and the water production pipeline connected to the outlet of the suction pump extends to the clear water tank.

[0009] Preferably, the suction pump is a self-priming pump.

[0010] Further preferably, the box body is divided into an electric control room, an operation room, and independent compartments corresponding to the anaerobic tank, the anoxic tank, the aerobic biological treatment tank, and the clear water tank one by one through partition boards, and each connecting pipeline is arranged above the compartments.

[0011] Furthermore, the upper part of the aerobic tank is covered with a perforated cover plate as a partition board. An overflow tank is also provided between the anoxic tank and the aerobic tank. One side of the overflow tank close to the anoxic tank is grid-shaped, and the other opposite side is communicated with the aerobic tank through a plurality of through holes.

[0012] Preferably, the filter is a basket type filter.

[0013] Wherein, the reflux device II and the reflux device I respectively include a reflux pump and a reflux pipe. The reflux pump of the reflux device II is arranged in the anoxic tank, and the reflux pump of the reflux device I is arranged in the aerobic biological treatment tank.

[0014] The technical solution of the present utility model has the following advantages:

[0015] A. The utility model sets an integrated filter, anaerobic tank, anoxic tank, aerobic biological treatment tank and control device in a box body. Meanwhile, a reflux device I and a loop device II are respectively arranged between the aerobic biological treatment tank and the anoxic tank, and between the anaerobic tank and the anoxic tank unit to establish a biological activity connection. Preferably, the aeration efficiency is significantly improved through pulse aeration. Compared with traditional microporous aeration under the same air supply volume, it is increased by more than 40%. It is very suitable for the raw water treatment with CODcr concentration ≤ 3000mg / L, BOD 5 concentration ≤ 1000mg / L, B / C ≥ 0.3, and SS ≤ 300mg / L.

[0016] B. Aiming at the actual engineering problems of high energy consumption and low efficiency in sewage treatment projects, under the current situation of continuously rising energy costs, the utility model improves the sewage treatment aeration process level and energy utilization efficiency, uses the least amount of electric energy to meet the sewage discharge requirements, promotes low-carbon emission reduction in the industry, and plays a positive role in enhancing the economic competitiveness of agricultural product processing enterprises and the overall technical level of the industry. Description of the Drawings

[0017] In order to more clearly illustrate the specific implementation manners of the utility model, the drawings required for use in the specific implementation manners will be briefly introduced below. Obviously, the drawings in the following description are some implementation manners of the utility model. For those of ordinary skill in the art, other drawings can be obtained based on these drawings without creative efforts.

[0018] Figure 1 It is the process flow diagram of the integrated sewage treatment equipment for agricultural product processing provided by the utility model;

[0019] Figure 2 It is the overall view of the equipment provided by the utility model (the top cover is open or is a transparent top cover);

[0020] Figure 3 It is the internal view I of the equipment provided by the utility model;

[0021] Figure 4 It is the internal view II of the equipment provided by the utility model;

[0022] Figure 5 It is the internal view III of the equipment provided by the utility model;

[0023] Figure 6 It is the schematic diagram of the equipment composition provided by the utility model.

[0024] The description of the identification symbols provided in the drawings is as follows:

[0025] 1 - Box body

[0026] 11 - Electrical control room, 12 - Operation room

[0027] 2 - Filter

[0028] 21 - Inlet pipeline

[0029] 3 - Anaerobic tank; 4 - Anoxic tank

[0030] 5 - Aerobic biological treatment tank

[0031] 51 - Aerobic tank, 511 - Overflow trough

[0032] 52 - Membrane module, 521 - Product water pipeline, 522 - Backwash pipeline

[0033] 53 - Membrane tank

[0034] 6 - Control device; 7 - Return device II; 8 - Return device I

[0035] 9 - Aeration device

[0036] 91 - Blower, 92 - Aeration pipe I, 93 - Aeration pipe II, 94 - Pulse aeration device

[0037] 10 - Suction pump; 20 - Clear water tank; 30 - Partition board; 40 - Drain outlet; 50 - Regulation tank

[0038] a - Return pump; b - Return pipe Detailed implementation manner

[0039] Next, the technical solutions of the present utility model will be clearly and completely described in conjunction with the accompanying drawings. Obviously, the described embodiments are part of the embodiments of the present utility model, rather than all of them. Based on the embodiments of the present utility model, all other embodiments obtained by those of ordinary skill in the art without making creative efforts fall within the protection scope of the present utility model.

[0040] As Figures 1 to 5As shown in the figure, the utility model provides an integrated treatment device for agricultural product processing sewage. The device includes a box body 1, in which a filter 2, an anaerobic tank 3, an anoxic tank 4, an aerobic biological treatment tank 5 and a control device 6 are arranged. A water inlet pipeline 21 is connected to the filter 2. The filter 2 is preferably a basket filter, which is used to filter the raw water. The filtered water flows into the anaerobic tank 3 through the water inlet pipeline 21. A reflux device II 7 is also arranged between the anaerobic tank 3 and the anoxic tank 4. A reflux device I 8 is arranged between the anoxic tank 4 and the aerobic biological treatment tank 5, which is used to reflux part of the sludge to the anoxic tank 4. The sludge generated by the aerobic biological treatment tank 5 is transported to a sludge storage tank (not shown in the figure) through a pipeline. Of course, the sludge storage tank can also be arranged in the box body 1. An aeration device 9 and a suction pump 10 are arranged on the aerobic biological treatment tank 5. The aeration device 9 is used to aerate the aerobic biological treatment tank 5. The extraction pump 10 discharges the qualified water generated. Preferably, as Figure 6 shown, the reflux device II 7 and the reflux device I 8 respectively include a reflux pump a and a reflux pipe b. The reflux pump a of the reflux device II 7 is arranged in the anoxic tank 4. The outlet end of the reflux pump is connected with the reflux pipe b. A sleeve is sleeved outside the reflux pipe located in the anoxic tank 4. The other end of the reflux pipe extends into the anaerobic tank 3, forming a reflux from the anoxic tank to the anaerobic tank. The reflux pump a of the reflux device I 8 is arranged at the bottom of the aerobic biological treatment tank 5, and a sleeve is sleeved outside the reflux pipe located in the aerobic biological treatment tank 5 (which can be seen from the figure). The reflux pipe b extends out of the aerobic biological treatment tank 5 and extends into the anoxic tank 4, which is used to reflux part of the sludge to the anoxic tank 4, forming a reflux from the aerobic biological treatment tank to the anoxic tank.

[0041] As a preferred embodiment of the utility model, the aerobic biological treatment tank 5 includes an aerobic tank 51 and a membrane module 52. The sewage in the anoxic tank 4 overflows from above to the aerobic tank 51. The membrane module 52 is located in the aerobic tank 51. The aeration device 9 includes a blower 91, an air distribution pipe I 92, an air distribution pipe II 93 and a pulse aeration device 94. The air distribution pipe I 92 and the air distribution pipe II 93 are respectively connected with the blower 91. The air distribution pipe I 92 extends to the bottom of the aerobic tank 51. The air distribution pipe II 93 is connected with the pulse aeration device 94, and the pulse aeration device 94 is arranged at the bottom of the membrane module 52. The water production pipeline 521 on the membrane module 52 is connected with the suction pump 10. The suction pump 10 is preferably a self-priming pump. The qualified water generated by the membrane module 53 is discharged through the suction pump 10 and the water production pipeline 521.

[0042] As another preferred embodiment of the present utility model, the aerobic biological treatment tank 5 includes an aerobic tank 51, a membrane tank 53 and a membrane module 52. The sewage in the anoxic tank 4 overflows to the aerobic tank 51 from above. The membrane module 52 is located in the membrane tank 53, and the water in the aerobic tank 51 enters the membrane tank 53. The aeration device 9 includes a blower 91, an air pipe I 92, an air pipe II 93 and a pulse aeration device 94. The air pipe I 92 and the air pipe II 93 are respectively connected to the blower 91. The present utility model preferably uses two blowers 91. The air pipe I 92 extends to the bottom of the aerobic tank 51. The air pipe II 93 is connected to the pulse aeration device 94, and the pulse aeration device 94 is arranged at the bottom of the membrane module 52. The water production pipeline 521 on the membrane module 52 is connected to the suction pump 10.

[0043] The following are the reactions occurring in the anoxic tank, aerobic tank and membrane tank.

[0044] (1) Anoxic tank

[0045] The nitrate nitrogen undergoes denitrification reaction under the action of denitrifying bacteria, generating nitrogen gas which is released into the atmosphere to complete nitrogen removal. To make full use of the carbon source in the water, the anoxic tank is placed before the aerobic tank, and at the same time, the nitrified liquid from the effluent of the aerobic tank is refluxed to the front-end anoxic tank for denitrification, that is, internal reflux.

[0046] (2) Aerobic tank

[0047] In the aerobic tank, aerobic bacteria use dissolved oxygen in the water as the electron acceptor and carbon source as the electron donor for aerobic respiration, and the final products are mainly carbon dioxide and water. Ammonia nitrogen undergoes nitrification reaction under the action of nitrite bacteria and nitrate bacteria in an aerobic environment.

[0048] (3) Membrane (MBR) tank

[0049] Under the suction action of the suction pump, the clear water passes through the micropores on the membrane surface of the membrane module and enters the water pump, and the clear water is discharged externally. To prevent sludge accumulation on the membrane surface, a pulse precise aeration energy-saving control device is integrated at the bottom of the membrane module. The blower aerates the membrane module through the pulse aeration device to scour the membrane and keep the membrane surface clean. Its basic principle is to create an inverted siphon process of gas near the interface of the gas-liquid two-phase with significant specific gravity difference through the design of the flow channel and liquid level. Under the condition of the same air supply volume, the effect of pulse aeration on membrane scrubbing is more than 40% higher than that of traditional micropore aeration.

[0050] In addition, a clean water tank 20 is also arranged in the box body of the present utility model. The water production pipeline 521 connected to the outlet of the suction pump 10 extends into the clean water tank 20. A drain port 40 is also arranged on the upper part of the side wall of the clean water tank 20 for discharging the qualified treated sewage. Of course, a backwashing pipeline 522 connected to the membrane module can also be arranged. One end of the backwashing pipeline 522 extends into the clean water tank 20 and is connected to the membrane module through the suction pump thereon for backwashing the membrane module, that is, backwashing the membrane surface by sucking the water in the clean water tank.

[0051] The present utility model adopts an integrated structure design. In the box body 1, it is divided into an electric control room 11, an operation room 12 and independent compartments corresponding to the anaerobic tank 3, the anoxic tank 4, the aerobic biological treatment tank 5 and the purification tank unit 20 by partition boards, and each connecting pipeline is arranged above the compartments.

[0052] As Figure 3 shown, a partition board 30 covers the upper part of the aerobic tank 51. An overflow tank 511 is also arranged between the anoxic tank 4 and the aerobic tank 51 for filtering out larger impurities or dirt. One side of the overflow tank 511 close to the anoxic tank 4 is grid-shaped, and the other opposite side is communicated with the aerobic tank 51 through a plurality of through holes, so that the sewage in the anoxic tank 4 enters the aerobic tank 51.

[0053] In addition, the control device 6 of the equipment of the present utility model can realize full-automatic operation and management through automatic control. The control device 6 is composed of a PLC control cabinet, a reflux pump, a suction pump, a blower, a solenoid valve, a liquid level gauge and an on-line monitoring instrument, etc.

[0054] The main performance parameters of the integrated treatment test platform for agricultural product processing sewage of the present utility model are shown in the following table:

[0055]

[0056] It can be seen that it has a simple structure, a small volume, a high degree of automation, adjustable and controllable parameters, and combined with the test platform, treatment equipment with different treatment capacities can be made and applied to the treatment of agricultural product processing sewage.

[0057] As Figure 6 shown, raw water is introduced into the filter inlet of the equipment of the present utility model from the regulating tank 50 (not arranged in the box body). After being filtered, the raw water sequentially enters the anaerobic tank, the anoxic tank, the aerobic tank and the membrane tank. At the same time, a reflux device I8 with a reflux pump and a reflux pipe is arranged from the aerobic tank to the anoxic tank, and a reflux device II7 with a reflux pump and a return pipeline is arranged from the anoxic tank to the anaerobic tank. The water separated from the membrane tank (MBR) enters the clean water tank along the water production pipeline 521. If it is necessary to backwash the membrane module, the suction pump needs to be started, so that the suction pump sucks the water in the clean water tank along the backwashing pipeline 522 to the membrane module to perform backwashing treatment on the membrane layer and improve its purification efficiency.

[0058] Where the present utility model is not described, it shall be applicable to the prior art.

[0059] Obviously, the above embodiments are merely examples given for clear illustration, rather than limitations on the implementation manners. For those of ordinary skill in the art, other different forms of changes or modifications can be made based on the above description. It is not necessary and impossible to enumerate all the implementation manners here. And the obvious changes or modifications derived therefrom are still within the protection scope of the present utility model.

Claims

1. An integrated treatment equipment for agricultural product processing wastewater, characterized in that: The equipment comprises a housing (1), wherein a filter (2), an anaerobic tank (3), an anoxic tank (4), an aerobic biological treatment tank (5) and a control device (6) are arranged in the housing (1); the filter (2) is connected to a water inlet pipeline (21), and the water inlet pipeline (21) extends to the anaerobic tank (3); a reflux device II (7) is arranged between the anoxic tank (4) and the anaerobic tank (3), so as to form a reflux from the anoxic tank to the anaerobic tank; a reflux device I (8) is arranged between the aerobic biological treatment tank (5) and the anoxic tank (4), so as to reflux part of the sludge in the aerobic biological treatment tank (5) to the anoxic tank (4); and an aeration device (9) and a suction pump (10) are arranged on the aerobic biological treatment tank (5), so as to aerate the aerobic biological treatment tank (5) and discharge the generated qualified water.

2. The integrated agricultural product processing wastewater treatment equipment according to claim 1 is characterized in that: The aerobic biological treatment tank (5) comprises an aerobic tank (51) and a membrane module (52). The sewage in the anoxic tank (4) enters the aerobic tank (51) from above the anoxic tank. The membrane module (52) is located in the aerobic tank (51). The aeration device (9) comprises a blower (91), an aeration pipe I (92), an aeration pipe II (93) and a pulse aeration device (94). The aeration pipe I (92) and the aeration pipe II (93) are respectively connected to the blower (91). The aeration pipe I (92) extends to the bottom of the aerobic tank (51). The aeration pipe II (93) is connected to the pulse aeration device (94). The pulse aeration device (94) is arranged at the bottom of the membrane module (52). The water production pipeline (521) on the membrane module (52) is connected to the suction pump (10).

3. The integrated agricultural product processing wastewater treatment equipment according to claim 1 is characterized in that: The aerobic biological treatment tank (5) comprises an aerobic tank (51), a membrane tank (53) and a membrane module (52); the sewage in the anoxic tank (4) enters the aerobic tank (51) from above the anoxic tank; the membrane module (52) is located in the membrane tank (53); the aerobic tank (51) is connected to the membrane tank (53); the aeration device (9) comprises a blower (91), an aeration pipe I (92), an aeration pipe II (93) and a pulse aeration device ( 94), the aeration pipe I (92) and the aeration pipe II (93) are respectively connected to the blower (91), the aeration pipe I (92) extends to the bottom of the aerobic tank (51), the aeration pipe II (93) is connected to the pulse aeration device (94), and the pulse aeration device (94) is arranged at the bottom of the membrane module (52), and the water production pipeline (521) on the membrane module (52) is connected to the suction pump (10).

4. The integrated treatment equipment for agricultural product processing wastewater according to claim 2 or 3, characterized in that: The device further comprises a clean water tank (20), and a water production pipeline (521) connected to the outlet of the suction pump (10) extends to the clean water tank (20).

5. The integrated agricultural product processing wastewater treatment equipment according to claim 4 is characterized in that: The suction pump (10) is a self-priming pump.

6. The integrated agricultural product processing wastewater treatment equipment according to claim 5 is characterized in that: The housing (1) is divided into an electric control room (11), an operation room (12) and independent compartments corresponding to the anaerobic tank (3), the anoxic tank (4), the aerobic biological treatment tank (5) and the clean water tank (20) by partitions, and each connecting pipeline is arranged from above the compartment.

7. The integrated agricultural product processing wastewater treatment equipment according to claim 6 is characterized in that: The upper part of the aerobic pool (51) is provided with a cover plate with holes as an isolation plate (30), and an overflow trough (511) is also provided between the anoxic pool (4) and the aerobic pool (51). The overflow trough (511) is in a grid shape on one side close to the anoxic pool (4), and the other opposite side is connected to the aerobic pool (51) through a plurality of through holes.

8. The integrated agricultural product processing wastewater treatment equipment according to claim 1 is characterized in that: The filter (1) is a basket filter.

9. The integrated agricultural product processing wastewater treatment equipment according to claim 1 is characterized in that: The reflux device II (7) and the reflux device I (8) respectively comprise a reflux pump (a) and a reflux pipe (b); the reflux pump (a) of the reflux device II (7) is arranged in the anoxic tank (4), and the reflux pump (a) of the reflux device I (8) is arranged in the aerobic biological treatment tank (5).

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