Sludge reflux device for sewage treatment

Abstract

The utility model belongs to the technical field of sewage treatment, and particularly relates to a sludge reflux device for sewage treatment, which comprises a sewage treatment box, a sludge reflux mechanism is fixedly mounted on the front surface of the sewage treatment box, and an aeration mechanism is fixedly mounted at the top of the sewage treatment box; the sludge backflow mechanism comprises a sludge backflow assembly, the sludge backflow assembly comprises a sludge pump, the back face of the sludge pump is fixedly connected with the front face of the sewage treatment box, one side of the sludge pump communicates with a sewage inlet pipe, and the other side of the sludge pump communicates with a sewage discharge pipe. According to the sludge backflow device for sewage treatment, activated sludge is poured into the sewage treatment box again from the sewage discharge pipe through the sludge pump through the sewage inlet pipe, and after the sludge is conveyed, the valve is opened, so that the sewage enters the communicating pipe from the sewage discharge pipe and is sprayed out from the spray holes of the communicating pipe to wash the inner wall of the sewage discharge pipe; and the sewage is poured into the aeration cavity in the sewage treatment box, so that the residual activated sludge in the sewage discharge pipe is washed away.

Description

TECHNICAL FIELD

[0001] The utility model relates to sewage treatment technical field especially sewage treatment sludge backflow device for sewage treatment. BACKGROUND

[0002] The decentralized integrated sewage treatment equipment integrates biochemical, sedimentation, disinfection and other functional units, makes sewage treatment technology highly integrated, can realize decentralized sewage efficient, low cost and modular treatment, can effectively solve the decentralized sewage treatment technical problem, and has become a trend of the development of the decentralized sewage treatment technology at home and abroad.

[0003] The sludge backflow refers to the activated sludge separated from the sedimentation zone and backflowed to the biological section.

[0004] 1. When the domestic sewage treatment tank discharges sludge, the sludge pipe is used to transport the sludge.

[0005] 2. Since part of the bacteria in the sludge needs oxygen to survive, the bacteria in the sludge pipe without flowing sludge gradually die, causing the sludge to rot, so that the sludge cannot be used again. SUMMARY

[0006] In order to overcome the defects of the prior art pointed out above, the present inventors have made in-depth research and, after a lot of creative labor, completed the present utility model.

[0007] Specifically, the technical problem to be solved by this utility model is to provide a sludge return device for sewage treatment, so as to solve the technical problem that when the sludge pipe is not in use, the residual sludge is easy to dry out, which leads to blockage of the sludge pipe. At the same time, the bacteria in the accumulated sludge do not receive oxygen in time, which easily leads to the death of bacteria in the sludge and sludge decay.

[0008] To solve the above-mentioned technical problems, the present invention provides the following technical solution:

[0009] A sludge return device for wastewater treatment includes a wastewater treatment tank, a sludge return mechanism fixedly installed on the front of the wastewater treatment tank, and an aeration mechanism fixedly installed on the top of the wastewater treatment tank.

[0010] The sludge return mechanism includes a sludge return component, which includes a sludge pump. The back of the sludge pump is fixedly connected to the front of the sewage treatment tank. One side of the sludge pump is connected to an inlet pipe, and the other side of the sludge pump is connected to a discharge pipe.

[0011] As an improved technical solution, the sludge return assembly further includes a diversion frame, the outer surface of which is fixedly connected to the inner surface of the sewage treatment tank. The rear end of the inlet pipe passes through the sewage treatment tank and the diversion frame in sequence and extends into the interior of the diversion frame. The rear end of the outlet pipe passes through the sewage treatment tank and extends into the interior of the sewage treatment tank.

[0012] As an improved technical solution, a sedimentation inlet assembly is provided on the front of the sewage treatment tank and located in the sludge return mechanism. The sedimentation inlet assembly includes a water pump. The back of the water pump is fixedly connected to the front of the sewage treatment tank. One side of the water pump is connected to an inlet pipe, and the other side of the water pump is connected to a drain pipe. The outer surface of the drain pipe is connected to a connecting pipe, and a valve is fixedly connected to the outer surface of the connecting pipe.

[0013] As an improved technical solution, the rear end of the inlet pipe passes through the sewage treatment tank and extends into the interior of the sewage treatment tank, one end of the connecting pipe passes through the sewage discharge pipe and extends into the interior of the sewage discharge pipe, and the outer surface of the connecting pipe is provided with spray holes.

[0014] As an improved technical solution, the aeration mechanism includes an air pump, one side of which is connected to an air inlet pipe, and the other end of which is connected to an air outlet pipe. An aeration pipe is connected to the outer surface of the air outlet pipe.

[0015] As an improved technical solution, the bottom of the air pump is fixedly connected to the top of the sewage treatment tank, the bottom end of the air outlet pipe passes through the sewage treatment tank and the diversion frame in sequence and extends into the interior of the diversion frame, and the bottom end of the aeration pipe passes through the sewage treatment tank and extends into the interior of the sewage treatment tank.

[0016] As an improved technical solution, the aeration mechanism further comprises an aeration hole, which is arranged on the top of the drainage frame and is in communication with the air outlet pipe.

[0017] After the above technical solution is adopted, the sewage treatment device has the following beneficial effects:

[0018] 1. The sewage treatment device has the beneficial effect that the residual sludge in the sludge return pipe is treated, the sludge pump, the drain pipe, the communication pipe, the valve, the drain pipe, and the water pump are used in cooperation, so that a part of the sewage that is originally transported to the aeration chamber is separated and enters the drain pipe, the residual sludge in the drain pipe is flushed, the flushed sludge is re-discharged into the aeration chamber of the sewage treatment tank, the problem that the residual sludge in the drain pipe hardens after a period of time and causes the hardened sludge to block the pipe is avoided, and the residual sludge loses activity after hardening.

[0019] 2. The sewage treatment device has the beneficial effect that the aerobic bacteria in the sludge provide oxygen continuously when the sludge is deposited, the air pump, the air outlet pipe, the drainage frame, and the aeration hole are used in cooperation, so that a small part of the oxygen that is originally transported to the aeration chamber is separated and filled into the deposition chamber, the oxygen supply to the aerobic bacteria in the accumulated active sludge in the deposition chamber is continuously provided, and the problem that the aerobic bacteria in the accumulated active sludge lose oxygen supply and cause the active sludge to gradually lose activity and rot is avoided. BRIEF DESCRIPTION OF DRAWINGS

[0020] In order to more clearly illustrate the technical solutions of the embodiments of the present application, the following will briefly introduce the drawings needed to be used in the embodiment description. Obviously, the drawings in the following description are only some embodiments of the present application, and other drawings can be obtained by those skilled in the art without any creative labor. Among them:

[0021] Figure 1 It is a whole three-dimensional structure schematic diagram of the sludge return device for sewage treatment.

[0022] Figure 2 It is a sewage treatment tank three-dimensional sectional structure schematic diagram of the sludge return device for sewage treatment.

[0023] Figure 3 It is a drainage frame, air outlet pipe, and sewage inlet pipe local three-dimensional sectional structure schematic diagram of the sludge return device for sewage treatment.

[0024] Figure 4 It is a drain pipe three-dimensional sectional structure schematic diagram of the sludge return device for sewage treatment.

[0025] MARKED IN THE DRAWINGS:

[0026] 1, sewage treatment tank; 2, sludge reflux mechanism; 21, sludge reflux assembly; 211, sludge pump; 212, sewage inlet pipe; 213, sewage outlet pipe; 214, drainage frame; 22, sedimentation water inlet assembly; 221, water pump; 222, water inlet pipe; 223, water outlet pipe; 224, communication pipe; 225, valve; 226, spray hole; 3, aeration mechanism; 31, air pump; 32, air inlet pipe; 33, air outlet pipe; 34, aeration pipe; 35, aeration hole. DETAILED DESCRIPTION

[0027] The technical solutions in the embodiments of the present application will be clearly and completely described below with reference to the drawings in 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 scope of protection of the present application.

[0028] It should be noted that all directional indications (such as up, down, left, right, front, back, etc.) in the embodiments of the present application are only used to explain the relative positional relationship, movement condition, etc. between components in a certain posture (as shown in the drawings), and if the certain posture changes, the directional indications also change accordingly.

[0029] Meanwhile, "and / or" or "and / or" appearing throughout the text means that it includes three schemes, taking "A and / or B" as an example, including A scheme, or B scheme, or A and B schemes.

[0030] In addition, the description of "first", "second" and the like in the present application is only for the purpose of description, and cannot be understood as indicating or implying the relative importance of the indicated technical features or implicitly indicating the number of the indicated technical features. Therefore, the features limited by "first" and "second" can explicitly or implicitly include at least one of the features. In addition, the technical solutions of each embodiment can be combined with each other, but it must be based on the realization of ordinary skilled in the art, when the combination of technical solutions appears contradictory or unachievable, it should be considered that the combination of technical solutions does not exist, and is not within the scope of protection required by the present application.

[0031] As Figure 1 and Figure 2 As shown in the drawings, the present embodiment provides a sludge reflux device for sewage treatment, which comprises a sewage treatment tank 1, a sludge reflux mechanism 2 is fixedly installed on the front face of the sewage treatment tank 1, and an aeration mechanism 3 is fixedly installed on the top of the sewage treatment tank 1.

[0032] The sludge backflow mechanism 2 comprises a sludge backflow assembly 21, the sludge backflow assembly 21 comprises a sludge pump 211, the back of the sludge pump 211 is fixedly connected with the front of the sewage treatment tank 1, one side of the sludge pump 211 is communicated with a sludge inlet pipe 212, and the other side of the sludge pump 211 is communicated with a sludge outlet pipe 213.

[0033] The sludge pump 211 is electrically connected with an external power supply, and the sludge pump 211 is controlled by an external PLC programming program.

[0034] As shown in Figure 1 , Figure 2 and Figure 3 , the sludge backflow assembly 21 further comprises a drainage frame 214, the outer surface of the drainage frame 214 is fixedly connected with the inner surface of the sewage treatment tank 1, the rear end of the sludge inlet pipe 212 sequentially penetrates the sewage treatment tank 1 and the drainage frame 214 and extends to the inside of the drainage frame 214, and the rear end of the sludge outlet pipe 213 penetrates the sewage treatment tank 1 and extends to the inside of the sewage treatment tank 1.

[0035] As shown in Figure 1 and Figure 2 , the front of the sewage treatment tank 1 and located at the sludge backflow mechanism 2 is provided with a sediment water inlet assembly 22, the sediment water inlet assembly 22 comprises a water pump 221, the back of the water pump 221 is fixedly connected with the front of the sewage treatment tank 1, one side of the water pump 221 is communicated with a water inlet pipe 222, the other side of the water pump 221 is communicated with a water outlet pipe 223, the outer surface of the water outlet pipe 223 is communicated with a communication pipe 224, and the outer surface of the communication pipe 224 is fixedly connected with a valve 225.

[0036] The water pump 221 is electrically connected with an external power supply, and the water pump 221 is controlled by an external PLC programming program.

[0037] As shown in Figure 1 , Figure 2 and Figure 4 , the rear end of the water inlet pipe 222 penetrates the sewage treatment tank 1 and extends to the inside of the sewage treatment tank 1, one end of the communication pipe 224 penetrates the sludge outlet pipe 213 and extends to the inside of the sludge outlet pipe 213, and the outer surface of the communication pipe 224 is provided with a spray hole 226.

[0038] As shown in Figure 1 and Figure 2 , the aeration mechanism 3 comprises a gas pump 31, one side of the gas pump 31 is communicated with an air inlet pipe 32, the other end of the gas pump 31 is communicated with an air outlet pipe 33, and the outer surface of the air outlet pipe 33 is communicated with an aeration pipe 34.

[0039] The gas pump 31 is controlled by an external PLC programming program, and the gas pump 31 is electrically connected with an external power supply.

[0040] As shown in Figure 1 and Figure 2As shown in the figures, the bottom of the air pump 31 is fixedly connected with the top of the sewage treatment tank 1, the bottom end of the air outlet pipe 33 penetrates the sewage treatment tank 1 and the drainage frame 214 in sequence and extends to the inside of the drainage frame 214, and the bottom end of the aeration pipe 34 penetrates the sewage treatment tank 1 and extends to the inside of the sewage treatment tank 1.

[0041] As shown in the figures, Figure 1 and Figure 3 As shown in the figures, the aeration mechanism 3 further comprises an aeration hole 35 which is arranged on the top of the drainage frame 214 and communicates with the air outlet pipe 33.

[0042] In use, sewage flows into the sewage treatment tank 1 through the pipeline, is pumped into the drain pipe 223 by the water pump 221 through the water inlet pipe 222 after the step of sedimentation, and enters the aeration chamber of the sewage treatment tank 1, while the air pump 31 delivers external oxygen into the air outlet pipe 33 through the air inlet pipe 32 and sprays it out from the aeration pipe 34, thereby aerating the sewage in the aeration chamber. The aerated sewage flows into the sedimentation chamber of the sewage treatment tank 1, and the sludge in the sewage is deposited on the drainage frame 214 and accumulated thereon. In order to avoid the accumulated activated sludge on the drainage frame 214 from losing activity, a part of the oxygen in the air outlet pipe 33 enters the drainage frame 214 and is sprayed out from the aeration hole 35 of the drainage frame 214, so that the aerobic bacteria in the activated sludge can survive. When the activated sludge accumulated in the drainage frame 214 reaches a certain amount, the activated sludge is pumped from the drain pipe 213 into the sewage treatment tank 1 through the sludge inlet pipe 212 by the sludge pump 211. When the sludge is delivered, the valve 225 is opened, so that the sewage flows from the drain pipe 213 into the communication pipe 224 and is sprayed out from the spray hole 226 of the communication pipe 224, thereby flushing the inner wall of the drain pipe 213 and pouring it into the aeration chamber of the sewage treatment tank 1, so that the activated sludge remaining in the drain pipe 213 is flushed away.

[0043] It should be understood that the use of these embodiments is only for the purpose of illustrating the present application and is not intended to limit the protection scope of the present application. In addition, it should also be understood that after reading the technical content of the present application, those skilled in the art can make various modifications, modifications and / or deformations to the present application, and all these equivalent forms also fall within the protection scope defined by the appended claims of the present application.

Claims

1. A sludge return device for wastewater treatment, comprising a wastewater treatment tank (1), characterized in that: A sludge return mechanism (2) is fixedly installed on the front of the sewage treatment tank (1), and an aeration mechanism (3) is fixedly installed on the top of the sewage treatment tank (1). The sludge return mechanism (2) includes a sludge return assembly (21), which includes a sludge pump (211). The back of the sludge pump (211) is fixedly connected to the front of the sewage treatment tank (1). One side of the sludge pump (211) is connected to an inlet pipe (212), and the other side of the sludge pump (211) is connected to a discharge pipe (213).

2. The sludge return device for wastewater treatment according to claim 1, characterized in that: The sludge return assembly (21) also includes a diversion frame (214), the outer surface of which is fixedly connected to the inner surface of the sewage treatment tank (1), the rear end of the inlet pipe (212) passes through the sewage treatment tank (1) and the diversion frame (214) in sequence and extends into the interior of the diversion frame (214), and the rear end of the outlet pipe (213) passes through the sewage treatment tank (1) and extends into the interior of the sewage treatment tank (1).

3. The sludge return device for wastewater treatment according to claim 1, characterized in that: A sedimentation inlet assembly (22) is provided on the front of the sewage treatment tank (1) and located at the sludge return mechanism (2). The sedimentation inlet assembly (22) includes a water pump (221). The back of the water pump (221) is fixedly connected to the front of the sewage treatment tank (1). One side of the water pump (221) is connected to an inlet pipe (222), and the other side of the water pump (221) is connected to a drain pipe (223). The outer surface of the drain pipe (223) is connected to a connecting pipe (224), and the outer surface of the connecting pipe (224) is fixedly connected to a valve (225).

4. The sludge return device for wastewater treatment according to claim 3, characterized in that: The rear end of the inlet pipe (222) passes through the sewage treatment tank (1) and extends into the interior of the sewage treatment tank (1). One end of the connecting pipe (224) passes through the sewage discharge pipe (213) and extends into the interior of the sewage discharge pipe (213). The outer surface of the connecting pipe (224) is provided with spray holes (226).

5. The sludge return device for wastewater treatment according to claim 1, characterized in that: The aeration mechanism (3) includes an air pump (31), one side of which is connected to an air inlet pipe (32), and the other end of which is connected to an air outlet pipe (33). The outer surface of the air outlet pipe (33) is connected to an aeration pipe (34).

6. The sludge return device for wastewater treatment according to claim 5, characterized in that: The bottom of the air pump (31) is fixedly connected to the top of the sewage treatment tank (1). The bottom end of the air outlet pipe (33) passes through the sewage treatment tank (1) and the diversion frame (214) in sequence and extends into the interior of the diversion frame (214). The bottom end of the aeration pipe (34) passes through the sewage treatment tank (1) and extends into the interior of the sewage treatment tank (1).

7. The sludge return device for wastewater treatment according to claim 1, characterized in that: The aeration mechanism (3) also includes an aeration hole (35), which is located on the top of the diversion frame (214) and connected to the air outlet pipe (33).

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