Integrated short-range biological reaction tank

Abstract

The utility model provides an integrated short-range biological reaction tank which comprises a tank body, the tank body is of a frame structure, a water inlet area, a gas stripping area, an aeration area, a separation area and a water outlet area are arranged in the tank body, and the separation area and the aeration area are arranged based on the two ends of the tank body; a partition plate is fixedly arranged on the basis of the length direction of the aeration area, the separation area and the water outlet area are fixedly arranged at one end of the tank body, the gas stripping area is fixedly arranged in the separation area, a water inlet area is fixedly arranged perpendicular to the gas stripping area, the water inlet area is communicated with the gas stripping area, and the water outlet area is communicated with the gas stripping area. And an analysis area is arranged close to the separation area based on the partition plate. According to the utility model, the gas stripping area is close to the water inlet area and is communicated with the analysis area, so that dissolved oxygen in the analysis area and wastewater in the water inlet area can be mixed for a subsequent nitration process, the oxygen supply amount can be saved, and the energy consumption is reduced.

Description

Technical Field

[0001] The utility model relates to the technical field of sewage biological treatment, in particular to an integrated short-range biological reaction pool. Background Art

[0002] Traditional biological nitrification and denitrification technologies require a carbon source for denitrification. For wastewater with a low C / N ratio, denitrification cannot proceed effectively without an external organic carbon source. To address this limitation, a new denitrification mechanism and process has emerged in recent years: the short-cut nitrification-anaerobic ammonium oxidation (ANAMMOX) process. Compared to traditional processes, the short-cut nitrification-ANAMMOX process not only saves 50% of aeration volume but also requires no external organic carbon source, offering irreplaceable advantages for treating low C / N wastewater. However, in the short-cut nitrification-ANAMMOX process, because nitrification requires a high dissolved oxygen level, while denitrification requires almost no dissolved oxygen, a large amount of dissolved oxygen remains unused in the water at the outlet. Utility Model Content

[0003] The technical problem to be solved by the utility model is to overcome the defects of the existing technology. The utility model proposes an integrated short-range biological reaction pool, which applies the dissolved oxygen at the outlet end to the nitrification process.

[0004] In order to solve the above technical problems, the technical solution adopted by the present invention is: an integrated short-range biological reaction tank, comprising a tank body, the tank body is a frame structure, and a water inlet area, an air stripping area, an aeration area, a separation area and a water outlet area are arranged in the tank body.

[0005] The separation zone and the aeration zone are arranged based on the two ends of the tank body;

[0006] A partition is fixedly arranged in the length direction of the aeration zone, the separation zone and the water outlet zone are fixedly arranged at one end of the tank body, the gas stripping zone is fixedly arranged in the separation zone, and a water inlet zone is fixedly arranged perpendicular to the gas stripping zone. The water inlet zone is connected with the gas stripping zone, and an analysis zone is arranged close to the separation zone based on the partition.

[0007] Furthermore, a water inlet pipe is provided in the water inlet area, a gas stripping device is provided in the gas stripping area, and a plurality of filter membranes are provided in the separation area. The input end of the gas stripping device is close to the filter membrane and the output end of the water inlet pipe.

[0008] Furthermore, a detection device for detecting dissolved oxygen and conductivity of water is provided in the analysis area.

[0009] Furthermore, a separation component is fixedly arranged in the separation area, and a water outlet pipe is arranged in the water outlet area, and an input end of the water outlet pipe is close to the separation component.

[0010] Furthermore, the separation component is any one of a filter membrane or an inclined plate, or a combination of the two, for preventing suspended matter from passing through.

[0011] Furthermore, one end of the partition is fixed close to the edge of the separation zone, and the other end is fixed at a distance away from the end of the cell body.

[0012] Furthermore, a plurality of biological filler ball groups are fixedly arranged in the aeration zone, and the biological filler ball groups are filled with nitrifying bacteria and denitrifying bacteria.

[0013] Compared with the prior art, the beneficial effects of the present invention include:

[0014] 1) By placing the stripping zone close to the water inlet zone and connecting the stripping zone to the analysis zone, the dissolved oxygen in the analysis zone can be mixed with the wastewater in the water inlet zone for use in the subsequent nitrification process, which can save oxygen supply and thus reduce energy consumption;

[0015] 2) By setting up a separation component in the separation zone, the sludge and suspended solids in the treated water are intercepted by the separation component, and the clean water is collected and discharged through the outlet pipe, while the suspended solids are recirculated, which can effectively reduce the amount of sludge generated;

[0016] 3) The aeration zone is divided into sections by partitions, which effectively prolongs the residence time of wastewater in the aeration zone. A biological filler ball group is set in the aeration zone, which has a higher denitrification rate in the aeration zone, NO 2－ The denitrification rate is usually higher than that of NO 3－ The reaction time is shortened and the volume of the reactor is reduced accordingly. Therefore, the biological denitrification process is faster than the general nitrification and denitrification reaction process and has a high denitrification efficiency. BRIEF DESCRIPTION OF THE DRAWINGS

[0017] The disclosure of the present invention is described with reference to the accompanying drawings. It should be understood that the drawings are for illustrative purposes only and are not intended to limit the scope of protection of the present invention. In the accompanying drawings, the same reference numerals are used to refer to the same components. Among them:

[0018] Figure 1 The overall structure of the integrated short-range bioreactor is schematically shown.

[0019] Numbers in the figure: 1-tank body, 2-water inlet area, 3-air stripping area, 4-aeration area, 5-separation area, 6-water outlet area, 7-partition, 8-analysis area. DETAILED DESCRIPTION

[0020] It is easy to understand that according to the technical solution of the present invention, without changing the essential spirit of the present invention, a person skilled in the art can propose a variety of interchangeable structural methods and implementation methods. Therefore, the following specific embodiments and drawings are only illustrative of the technical solution of the present invention and should not be regarded as the entire present invention or as a limitation or restriction of the technical solution of the present invention.

[0021] An integrated short-cut biological reactor comprises a tank body 1, which is a square frame structure as a whole. An inlet area 2, an air stripping area 3, an aeration area 4, a separation area 5 and an outlet area 6 are arranged in the tank body 1 to complete the nitrification, denitrification and denitrification process of wastewater.

[0022] The following describes the positions of the aforementioned water inlet zone 2, air stripping zone 3, aeration zone 4, separation zone 5, and water outlet zone 6. The separation zone 5 and aeration zone 4 are arranged based on the two ends of the tank body 1; a partition 7 is fixedly arranged based on the longitudinal direction of the aforementioned aeration zone 4, the separation zone 5 and water outlet zone 6 are fixedly arranged at one end of the tank body 1, the air stripping zone is fixedly arranged in the separation zone 5, and the water inlet zone 2 is fixedly arranged perpendicular to the air stripping zone 3. The water inlet zone is connected to the air stripping zone 3, and the aforementioned aeration zone 4 is connected to the lower section of the separation zone 5, which is used to send the treated water into the separation zone 5 to complete the separation process. After the water is treated in the separation zone 5, the sludge, clean water, and suspended matter partially dissolved in the clean water are separated, and the clean water is discharged through the water outlet zone 6, while the suspended matter is mixed with the sewage entering the tank body 1 through the air stripping zone 6 set in the separation zone, and then re-enters the aeration zone for water treatment. An analysis area 8 is provided close to the separation area 5 based on the partition 7. Because the suspended matter and water located in the analysis area 8 have undergone nitrification and denitrification processes, the dissolved oxygen contained therein is relatively high. Through this arrangement, the dissolved oxygen can be absorbed into the water inlet area 2 and refluxed and mixed with the incoming wastewater, thereby increasing the dissolved oxygen content in the water inlet area 2. For the activated sludge process, the oxygen supply can be effectively saved. According to tests, the saving amount is about 30% (in terms of oxygen), which can effectively reduce energy consumption. Moreover, by relying on the air stripping device to reflux the suspended matter into the water inlet area 2, the amount of sludge generated can be effectively reduced.

[0023] The aforementioned water inlet zone 2 is equipped with an inlet pipe for delivering wastewater into the tank 1 to participate in the nitrification and denitrification biological denitrification process. A stripping device is installed in the stripping zone 3, and several filter membranes are installed in the separation zone 5. The input end of the stripping device is close to the filter membranes and the output end of the water supply pipe, thereby simultaneously drawing in wastewater entering the tank 1 and suspended solids in the separation zone 5. After mixing the two, they are then delivered to the aeration zone 4 for biochemical treatment. The analysis zone 8 is equipped with detection equipment for detecting dissolved oxygen and conductivity in the water.

[0024] A separation component is fixedly installed in the separation area 5, and an outlet pipe is installed in the outlet area 6. The input end of the outlet pipe is close to the separation component. The separation component can be any one of a filter membrane or an inclined plate, or a combination of the two. By setting the separation component, the suspended matter and sludge in the water body after the nitrification and denitrification biological denitrification process are intercepted, and the clean water separated by the separation component is collected by the outlet pipe and discharged, and the remaining sludge flows into the sludge collection tank by gravity to complete the collection.

[0025] One end of the partition 7 arranged in the aeration zone 4 is close to the edge of the separation zone 5, leaving a gap for communication between the analysis zone 8 and the air stripping zone 3, and the other end is a distance away from the end of the tank body 1, partially dividing the aeration zone 4, which helps to prolong the flow time of the wastewater in the aeration zone 4. A number of biological filler ball groups are fixedly arranged in the aeration zone 4, and the biological filler ball groups are filled with nitrifying bacteria and denitrifying bacteria. Nitrite bacteria, i.e., ammonia nitrogen oxidizing bacteria, convert ammonia nitrogen in the wastewater into nitrite, and then nitrifying bacteria, i.e., nitrite oxidizing bacteria, convert nitrite into nitrate. After that, denitrifying bacteria use various organic substrates as electron donors and nitrate as electron acceptor to perform anoxic respiration to complete the denitrification process, and then enter the analysis zone 8 and the separation zone 5 in sequence. The whole process has a high denitrification rate, NO 2－ The denitrification rate is usually higher than that of NO 3－ The reaction time is shortened and the volume of the reactor is reduced accordingly. Therefore, the biological denitrification process is faster than the general nitrification and denitrification reaction process and has a high denitrification efficiency.

[0026] The technical scope of the present invention is not limited to the contents described above. Those skilled in the art can make various deformations and modifications to the above embodiments without departing from the technical concept of the present invention, and these deformations and modifications should all fall within the scope of protection of the present invention.

Claims

1. An integrated short-range biological reaction tank, characterized in that: The invention comprises a tank body (1), wherein the tank body (1) is a frame structure, and a water inlet area (2), an air stripping area (3), an aeration area (4), a separation area (5) and a water outlet area (6) are arranged in the tank body (1). The separation zone (5) and the aeration zone (4) are arranged based on the two ends of the tank body (1); A partition (7) is fixedly arranged along the length direction of the aeration zone (4); the separation zone (5) and the water outlet zone (6) are fixedly arranged at one end of the tank body (1); the gas stripping zone (3) is fixedly arranged in the separation zone (5); a water inlet zone (2) is fixedly arranged perpendicular to the gas stripping zone (3); the water inlet zone (2) is connected to the gas stripping zone (3); and an analysis zone (8) is arranged close to the separation zone (5) based on the partition (7).

2. The integrated short-range bioreactor according to claim 1, characterized in that: A water inlet pipe is provided in the water inlet area (2), a gas stripping device is provided in the gas stripping area (3), and a plurality of filter membranes are provided in the separation area (5). The input end of the gas stripping device is close to the filter membrane and the output end of the water inlet pipe.

3. The integrated short-range bioreactor according to claim 1, characterized in that: Detection equipment for detecting dissolved oxygen and electrical conductivity of water is provided in the analysis area (8).

4. The integrated short-range bioreactor according to claim 1, characterized in that: A separation component is fixedly arranged in the separation area (5), and a water outlet pipe is arranged in the water outlet area (6), with the input end of the water outlet pipe being close to the separation component.

5. The integrated short-range bioreactor according to claim 4, characterized in that: The separation component is any one of a filter membrane or an inclined plate or a combination of the two, and is used to prevent suspended matter from passing through.

6. The integrated short-range bioreactor according to claim 1, characterized in that: One end of the partition (7) is fixed close to the edge of the separation zone (5), and the other end is fixed at a distance away from the end of the cell body (1).

7. The integrated short-range bioreactor according to claim 6, characterized in that: A plurality of biological filler ball groups are fixedly arranged in the aeration zone (4), and the biological filler ball groups are filled with nitrifying bacteria and denitrifying bacteria.

Images