Up-flow anaerobic treatment device

Abstract

The utility model relates to an upflow anaerobic treatment device which comprises a device body, an inner cavity, a water inlet, a water outlet and a filler layer are arranged on the device body, the water inlet is communicated with the bottom of the inner cavity, the water outlet is communicated with the top end of the inner cavity, the filler layer is arranged in the inner cavity, and the outer edge of the filler layer is matched with the cavity wall of the inner cavity; in addition, the device body is further provided with an air inlet and an air outlet, the air inlet is communicated with the bottom of the inner cavity, the air inlet is communicated with the top end of the inner cavity, and the air inlet is communicated with an air outlet pipeline. The utility model is not easy to block, and has lower overhaul and maintenance frequency.

Description

Technical Field

[0001] The utility model relates to the technical field of water treatment equipment, in particular to an upflow anaerobic treatment device. Background Art

[0002] In wastewater and sewage treatment, biochemical water treatment methods are often used, such as anaerobic treatment. The upflow anaerobic tank controls anaerobic conditions and cultivates anaerobic microorganisms that adapt to the environment under a certain upflow rate screening. The organic matter is intercepted and treated by the biological filter layer, and the organic pollutants are removed through the process of hydrolysis, hydrogen production, acetic acid production, and methane production. However, in order to ensure that anaerobic microorganisms are implanted on the filler, the upflow rate is usually small, which can easily cause the gaps between the fillers to be blocked, and the anaerobic treatment device is usually closed, and the inspection and maintenance are relatively frequent and troublesome. In addition, the upflow anaerobic devices currently made in China mainly use hydraulic circulation to achieve the screening and stirring of flocculent sludge. In the process of reaching the sludge filter layer, hydraulic upflow alone is prone to channeling, resulting in relatively low treatment efficiency of the device. Utility Model Content

[0003] The utility model aims to provide an upflow anaerobic treatment device, which is not prone to clogging and has a lower frequency of overhaul and maintenance.

[0004] To achieve the above-mentioned purpose, the utility model discloses an upflow anaerobic treatment device, including a device body, on which an inner cavity, a water inlet, a water outlet and a packing layer are provided, the water inlet is connected to the bottom of the inner cavity, the water outlet is connected to the top of the inner cavity, the packing layer is placed in the inner cavity, and the outer edge of the packing layer is matched with the cavity wall of the inner cavity; in addition, an air inlet and an exhaust port are also provided on the device body, the air inlet is connected to the bottom of the inner cavity, the air inlet is connected to the top of the inner cavity, and the air inlet is connected to the exhaust port pipeline.

[0005] Preferably, it further comprises a pressurized gas storage tank, the exhaust port pipe is connected to the pressurized gas storage tank, and the air inlet pipe is connected to the pressurized gas storage tank.

[0006] Preferably, a valve is provided on the pipeline connecting the pressurized gas storage tank and the air inlet; and a fan is provided on the pipeline connecting the pressurized gas storage tank and the air outlet.

[0007] Preferably, it also includes at least one air distribution pipe, which is placed in the inner cavity and below the filler layer. The air distribution pipe is provided with an air inlet hole and a plurality of air outlet holes, the air outlet holes are connected to the air inlet holes, and the air inlet holes are connected to the air inlet.

[0008] Preferably, the air distribution pipes are arranged radially or annularly.

[0009] Preferably, a collecting hopper for collecting gas is also provided in the inner cavity, the wide mouth area of ​​the collecting hopper is smaller than the cross-sectional area of ​​the inner cavity, and the narrow mouth of the collecting hopper is connected to the exhaust port.

[0010] Preferably, it further comprises a water and air distribution plate, on which a plurality of through holes are evenly distributed, and the water and air distribution plate supports the packing layer.

[0011] Preferably, the device body is further provided with a sludge sampling port and an inspection manhole, the sludge sampling port and the inspection manhole are connected to the inner cavity in a blockable manner, the sludge sampling port is located above the packing layer, and the inspection manhole is arranged opposite to the packing layer.

[0012] Preferably, the packing layer is a pebble packing layer.

[0013] Preferably, a pressure relief port is also provided at the top of the device body, and the pressure relief port is connected to the inner cavity.

[0014] The utility model has the following beneficial effects:

[0015] The utility model draws out the gas (mainly methane) generated during the anaerobic treatment process through the exhaust port, and then introduces it into the inner cavity from bottom to top through the air inlet, thereby providing sufficient air agitation for the microorganisms attached to the packing layer, thereby improving the device's removal effect on organic matter in wastewater and sewage. In addition, under the action of air agitation, the gaps in the packing layer are less likely to be blocked, and it is also beneficial to the peeling and renewal of the anaerobic biofilm attached to the packing layer, thereby improving the removal effect of organic matter. Because the packing layer is less likely to be blocked, the device can be inspected and maintained at a lower frequency. BRIEF DESCRIPTION OF THE DRAWINGS

[0016] Figure 1 It is a schematic diagram of the utility model.

[0017] Figure 2 Schematic diagram of the water and air distribution plate.

[0018] Figure 3 Schematic diagram of the air pipe.

[0019] Main component symbols:

[0020] Device body 10, inner cavity 11, water inlet 12, water outlet 13, exhaust port 14, air inlet 15, pressure relief port 16, sludge sampling port 17, and inspection manhole 18;

[0021] Filling layer 20;

[0022] Water and air distribution plate 30, through hole 31;

[0023] Collection bucket 40;

[0024] Air distribution pipe 50, air outlet 51, air inlet 52. DETAILED DESCRIPTION

[0025] In order to make the purpose, technical solutions and advantages of the present invention more clearly understood, the present invention is further described in detail below in conjunction with the accompanying drawings and embodiments.

[0026] like Figures 1 to 3 As shown, the utility model discloses an upflow anaerobic treatment device, including a device body 10, on which an inner cavity 11, a water inlet 12, a water outlet 13, an exhaust port 14, an air inlet 15 and a pressure relief port 16 are provided. The water inlet 12 and the air inlet 15 are located at the bottom of the device body 10 and communicate with the inner cavity 11, and the water outlet 13, the exhaust port 14 and the pressure relief port 16 are arranged at the top of the device body 10 and communicate with the inner cavity 11. The water inlet 12 is used to introduce wastewater and sewage to be treated. When the device is overhauled, the water inlet 12 can also be used to empty the inner cavity 11. The water outlet 13 is used to guide the treated water after anaerobic treatment. Of course, the treated water can also flow back to the water inlet 12 for circulation treatment, which depends on the wastewater to be treated. A pressure relief valve is provided on the pressure relief port 16 to avoid danger caused by excessive air pressure in the inner cavity 11. The exhaust port 14 is used to guide the gas generated during the anaerobic treatment process, mainly methane. A packing layer 20 is provided in the inner cavity 11, and the outer edge of the packing layer 20 is matched with the cavity wall of the inner cavity 11. The packing layer 20 provides a bed for anaerobic organisms, and the packing layer 20 is preferably a pebble packing layer 20. A water and air distribution plate 30 is also provided in the inner cavity 11. The water and air distribution plate 30 is placed below the packing layer 20 and can support the packing layer 20. At the same time, a plurality of through holes 31 are evenly distributed on the water and air distribution plate 30 to facilitate even air and water distribution.

[0027] As a preferred embodiment, the exhaust port 14 is connected to the common end of the three-way valve, the normally closed end of the three-way valve is connected to the methane collection device (to collect excess methane), and the normally open end of the three-way valve is connected to the air inlet 15 through a pipeline, so that methane is reintroduced into the inner cavity 11, thereby playing a gas stirring role. A fan can be added to the connecting pipeline between the normally open end of the three-way valve and the air inlet 15 to facilitate air conduction.

[0028] As another preferred embodiment, the exhaust port 14 is connected to the pressurized gas storage tank through a pipeline, and a fan is arranged on the pipeline to facilitate the introduction of methane into the pressurized gas storage tank. At the same time, the pressurized gas storage tank is connected to the air inlet 15 through a pipeline, and a valve is provided on the pipeline connecting the pressurized gas storage tank and the air inlet 15.

[0029] Of course, other connection methods can also be adopted, as long as the methane discharged from the exhaust port 14 can be reintroduced into the air inlet 15 to play a gas stirring role in the inner cavity 11. The air introduction to the air inlet 15 can be continuous or intermittent. In order to facilitate the collection of gas at the exhaust port 14, a collecting bucket 40 for collecting gas is also provided in the inner cavity 11. The wide mouth area of ​​the collecting bucket 40 is smaller than the cross-sectional area of ​​the inner cavity 11 to avoid blocking the water outlet, and the narrow mouth of the collection is connected to the exhaust port 14. By blowing methane into the packing layer 20, the pebble packing layer 20 can be prevented from being blocked. The pebble packing layer 20 can also serve as a biological fixation layer to allow the anaerobic biofilm to adhere to it, forming a certain biological filter layer and being blown off and renewed by methane gas. In addition, the anaerobic sludge in the upper section is also more easily granulated under the action of a higher concentration of methane atmosphere, forming a higher removal efficiency.

[0030] In order to make the gas distribution more uniform, an air distribution pipe 50 is provided in the inner cavity 11 to cooperate with the air inlet 15. The air distribution pipe 50 is located below the packing layer 20. The air distribution pipe 50 is arranged radially or annularly. In this case, the air distribution pipe 50 is cross-shaped. An air inlet hole 52 and a plurality of air outlet holes 51 are provided on the air distribution pipe 50. The air outlet holes 51 are connected to the air inlet holes 52, and the air inlet holes 52 are connected to the air inlet 15. Through the above arrangement, methane can be evenly distributed. In addition, it is better to have a certain interval between the air distribution pipe 50 and the water and air distribution plate 30 to facilitate uniform gas distribution.

[0031] Through the above arrangement, the water and air distribution of the device is more uniform, the utilization rate of the packing layer 20 is higher, and the processing efficiency is also higher.

[0032] In order to facilitate the understanding of the treatment effect, a sludge sampling port 17 is provided on the device body 10, and the sludge sampling port 17 can be connected to the inner cavity 11 in a sealed manner, and the sludge sampling port 17 is located above the packing layer 20. In order to facilitate maintenance and cleaning, an inspection manhole 18 is also provided on the device body 10, and the inspection manhole 18 can be connected to the inner cavity 11 in a sealed manner, and the inspection manhole 18 is arranged opposite to the packing layer 20.

[0033] The above is only a preferred specific implementation of the present invention, but the protection scope of the present invention is not limited thereto. Any changes or substitutions that can be easily thought of by any technician familiar with the technical field within the technical scope disclosed in the present invention should be covered by the protection scope of the present invention.

Claims

1. An upflow anaerobic treatment device, comprising a device body, on which an inner cavity, a water inlet, a water outlet and a packing layer are arranged, the water inlet is connected to the bottom of the inner cavity, the water outlet is connected to the top of the inner cavity, the packing layer is placed in the inner cavity, and the outer edge of the packing layer is adapted to the cavity wall of the inner cavity; characterized in that: The device body is also provided with an air inlet and an exhaust port, wherein the air inlet is connected to the bottom of the inner cavity, the air inlet is connected to the top of the inner cavity, and the air inlet is connected to the exhaust port pipeline.

2. The upflow anaerobic treatment device according to claim 1, characterized in that: It also includes a pressurized gas storage tank, the exhaust port pipeline is connected to the pressurized gas storage tank, and the air inlet pipeline is connected to the pressurized gas storage tank.

3. The upflow anaerobic treatment device according to claim 2, characterized in that: A valve is provided on the pipeline connecting the pressurized gas storage tank and the air inlet; a fan is provided on the pipeline connecting the pressurized gas storage tank and the air outlet.

4. The upflow anaerobic treatment device according to claim 1, characterized in that: It also includes at least one air distribution pipe, which is placed in the inner cavity and below the filler layer. The air distribution pipe is provided with an air inlet and a plurality of air outlets. The air outlet is connected to the air inlet, and the air inlet is connected to the air inlet.

5. The upflow anaerobic treatment device according to claim 4, characterized in that: The air distribution pipes are arranged radially or annularly.

6. The upflow anaerobic treatment device according to claim 1, characterized in that: A collecting hopper for collecting gas is also provided in the inner cavity. The wide mouth area of ​​the collecting hopper is smaller than the cross-sectional area of ​​the inner cavity, and the narrow mouth of the collecting hopper is connected to the exhaust port.

7. The upflow anaerobic treatment device according to claim 1, characterized in that: It also includes a water and air distribution plate, on which a plurality of through holes are evenly distributed, and the water and air distribution plate supports the packing layer.

8. The upflow anaerobic treatment device according to claim 1, characterized in that: The device body is also provided with a sludge sampling port and an inspection manhole, which can be connected to the inner cavity in a sealed manner, the sludge sampling port is located above the packing layer, and the inspection manhole is arranged opposite to the packing layer.

9. The upflow anaerobic treatment device according to claim 1, characterized in that: The packing layer is a pebble packing layer.

10. The upflow anaerobic treatment device according to claim 1, characterized in that: The top of the device body is also provided with a pressure relief port, and the pressure relief port is connected to the inner cavity.

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