Hydrolysis acidification pool for industrial sewage treatment

Abstract

The utility model discloses a hydrolytic acidification pool for industrial sewage treatment, and belongs to the technical field of sewage treatment. The device comprises a hydrolysis tank and a sludge spraying and mixing assembly, the hydrolysis tank comprises a tank body, a sludge suction pipe and a clear liquid suction pipe, and the sludge suction pipe is arranged at the bottom of the tank body and used for sucking settled sludge; the clear liquid suction pipe is arranged at the top of the tank body and is used for sucking supernatant liquid; the sludge spraying and mixing assembly comprises a plurality of sludge spraying and mixing units arranged around the tank body and a driving system, each sludge spraying and mixing unit comprises a mixing shell, a liquid conveying head for spraying clear liquid, a gas conveying head, a sludge conveying head for spraying sludge and a spraying head, and the liquid conveying head, the gas conveying head, the sludge conveying head and the spraying head are detachably connected with the mixing shell; the sludge conveying head is communicated with the sludge suction pipe, and the liquid conveying head is communicated with the clear liquid suction pipe; the driving system can provide power for spraying of clear liquid, sludge and air. The working efficiency of the hydrolysis tank can be improved.

Description

Technical Field

[0001] The utility model relates to the technical field of sewage treatment, in particular to a hydrolysis acidification tank for industrial sewage treatment. Background Technique

[0002] Sewage treatment is a process of purifying sewage to meet the water quality requirements for discharging into a certain water body or reusing it. Sewage treatment is widely used in various fields such as construction, agriculture, transportation, energy, petrochemical, environmental protection, urban landscape, medical treatment, and catering, and is also increasingly entering the daily lives of ordinary people. Among them, the hydrolysis treatment method is a method between aerobic and anaerobic treatment methods, and combined with other processes can reduce the treatment cost and improve the treatment efficiency. Hydrolysis refers to the biochemical reaction that occurs outside the microbial cell before the organic matter enters the microbial cell.

[0003] Currently, when treating sewage, there is usually activated sludge precipitation. In order to ensure the high treatment efficiency of the hydrolysis acidification tank, a sludge pump is usually used to pump the activated sludge back into the hydrolysis acidification tank. However, when the sludge enters the tank, due to the lack of a mixing device, the sludge cannot quickly spread in the tank and continues to precipitate at the bottom of the tank, restricting the role of the activated sludge in the hydrolysis tank and reducing the operating efficiency of the hydrolysis tank. Content of the Utility Model

[0004] In view of this, it is necessary to provide a hydrolysis acidification tank for industrial sewage treatment to solve the problem of low hydrolysis efficiency caused by sludge precipitation.

[0005] The utility model provides a hydrolysis acidification tank for industrial sewage treatment, including:

[0006] A hydrolysis tank, the hydrolysis tank includes a tank body, a sludge suction pipe, and a supernatant suction pipe. The sludge suction pipe is arranged at the bottom of the tank body for sucking the precipitated sludge; the supernatant suction pipe is arranged at the top of the tank body for sucking the upper supernatant;

[0007] A sludge spraying and mixing assembly, the sludge spraying and mixing assembly includes a plurality of sludge spraying and mixing units arranged around the tank body and a driving system. The sludge spraying and mixing unit includes a mixing housing, an infusion head for spraying the supernatant, a gas delivery head for spraying air, a sludge delivery head for spraying sludge, and a spray head. The infusion head, the gas delivery head, the sludge delivery head, and the spray head are detachably connected to the mixing housing. The spray head can spray a mixture of gas, liquid, and sludge from the mixing housing into the tank body to promote the oxygen-rich diffusion of the sludge; the sludge delivery head is communicated with the sludge suction pipe, and the infusion head is communicated with the supernatant suction pipe; the driving system can provide power for the spraying of the supernatant, sludge, and air.

[0008] Furthermore, the nozzle is provided with a plurality of ejection holes, which are inclined outward relative to the radial and circumferential directions of the nozzle, and are equidistantly arranged around the central axis of the nozzle, and the ejection holes can expand the spraying area of ​​the nozzle.

[0009] Furthermore, the mixing shell is provided with a spray tube, the spray tube is integrally connected with the mixing shell and is in communication with each other, and the nozzle is threadedly connected with the spray tube.

[0010] Furthermore, a connecting portion is protruding from the outside of the mixing shell, and the connecting portion is connected to the inner wall of the pool body. The multiple sludge spray mixing units are arranged obliquely upward, and the multiple nozzles cooperate with each other to drive the liquid in the pool body to rotate relative to each other.

[0011] Furthermore, the liquid outlet of the infusion head is arranged relative to the nozzle, the infusion head is coaxially arranged relative to the nozzle, and the gas delivery head and the mud delivery head are arranged on both sides of the infusion head.

[0012] Furthermore, the sludge spraying and mixing component also includes a sludge delivery unit, which includes a sludge pump and a multi-way connector. The inlet of the sludge pump is connected to the sludge suction pipe through a pipeline, and the outlet of the sludge pump is connected to the multi-way connector. The sludge delivery heads of the multiple sludge spraying and mixing units are respectively connected to the multi-way connector through pipelines.

[0013] Furthermore, the sludge spray mixing component also includes an infusion unit, which includes a high-pressure water pump and a filter. The inlet of the high-pressure water pump is connected to the filter and the clear liquid suction pipe in sequence through a pipeline, and the outlet of the high-pressure water pump is respectively connected to the infusion heads of multiple sludge spray mixing units.

[0014] Furthermore, the sludge spray mixing assembly also includes an air delivery unit, and the air delivery unit includes an air pump, and the air pump is respectively connected to the air delivery heads of the plurality of sludge spray mixing units through pipelines.

[0015] Compared with the prior art, the utility model has the following beneficial effects:

[0016] (1) An anaerobic hydrolysis tank for industrial sewage treatment of the present utility model is provided with a sludge spraying and mixing unit. The sludge spraying and mixing unit includes a mixing housing, an infusion head for spraying clear liquid, a gas delivery head for spraying air, a sludge delivery head for spraying sludge, and a nozzle. The infusion head is connected to a clear liquid suction pipe, and the infusion head can receive pressurized water from the clear liquid suction pipe. The sludge delivery head is connected to a sludge suction pipe, and the sludge delivery head can receive sludge from the sludge suction pipe. The infusion head, the gas delivery head, the sludge delivery head, and the nozzle are detachably connected to the mixing housing. The high-pressure water from the infusion head, the sludge from the sludge delivery head, and the air from the gas delivery head are mixed inside the mixing housing. The water body can be mixed with the sludge to dilute the sludge and enhance the fluidity of the sludge. The air can increase the oxygen content in the mixture and promote the reproduction of bacteria in the activated sludge. The water body and the air can pressurize the mixture, which helps the sludge to quickly spread and be evenly distributed in the tank body.

[0017] (2) An anaerobic hydrolysis tank for industrial sewage treatment of the present utility model is provided with a hydrolysis tank. The hydrolysis tank includes a tank body, a sludge suction pipe, and a clear liquid suction pipe. The sludge suction pipe is arranged at the bottom of the tank body. The sludge suction pipe can precipitate the sludge at the bottom of the tank body, pressurize the sludge, and re-enter the sludge into the tank body to promote the spread of the sludge. The clear liquid suction pipe is arranged at the top of the tank body. The suction pipe sucks the relatively clear water body in the tank body for mixing with the sludge, and the water body is recycled to save water resources. BRIEF DESCRIPTION OF THE DRAWINGS

[0018] The drawings described herein are used to provide a further understanding of the present utility model and form a part of this application. The schematic embodiments of the present utility model and their descriptions are used to explain the present utility model and do not constitute an improper limitation of the present utility model. In the drawings:

[0019] Figure 1 is a schematic structural diagram of the whole of the present utility model;

[0020] Figure 2 is a schematic connection structure diagram of the tank body and the sludge spraying and mixing assembly in the present utility model;

[0021] Figure 3 is a schematic structural diagram of the sludge spraying and mixing unit in the present utility model Figure 1 ;

[0022] Figure 4 is a schematic structural diagram of the sludge spraying and mixing unit in the present utility model Figure 2 ;

[0023] Figure 5 is a schematic structural diagram of the sludge spraying and mixing unit in the present utility model Figure 3 ;

[0024] Figure 6 is a schematic structural diagram of the nozzle in the present utility model;

[0025] Figure 7 It is a schematic structural diagram of the sludge conveying unit, liquid conveying unit and gas conveying unit in the present utility model.

[0026] In the figure, 100 is the hydrolysis tank; 110 is the tank body; 120 is the sludge suction pipe; 130 is the clear liquid suction pipe;

[0027] 200 is the sludge spraying and mixing assembly; 210 is the sludge spraying and mixing unit; 211 is the mixing housing; 211a is the spraying cylinder; 211b is the connecting part; 212 is the liquid injection head; 213 is the gas injection head; 214 is the sludge injection head; 215 is the spray head; 214a is the spraying hole; 220 is the sludge conveying unit; 221 is the sludge pump; 222 is the multi-way joint; 223 is the sludge inlet; 230 is the liquid conveying unit; 231 is the high-pressure water pump; 232 is the water inlet; 233 is the water outlet; 240 is the gas conveying unit; 241 is the air pump. Detailed implementation manners

[0028] Next, the preferred embodiments of the present utility model will be specifically described with reference to the accompanying drawings. Among them, the accompanying drawings form a part of this application and are used together with the embodiments of the present utility model to explain the principle of the present utility model, and are not used to limit the scope of the present utility model.

[0029] An industrial sewage treatment hydrolysis acidification tank in this embodiment relates to the technical field of sewage treatment. By pumping out the sludge at the bottom of the hydrolysis tank 100, the sludge is mixed with water and high-pressure air is introduced, so as to realize the stirring of the activated sludge, promote the rapid diffusion of the activated sludge in the tank, and provide sufficient oxygen for the bacteria in the activated sludge, thereby improving the working efficiency of the hydrolysis tank 100.

[0030] Please refer to Figures 1 to 7 , an industrial sewage treatment hydrolysis acidification tank in this embodiment includes: a hydrolysis tank 100 and a sludge spraying and mixing assembly 200. The hydrolysis tank 100 can store activated sludge and industrial wastewater, and hydrolyze the substances in the wastewater. The sludge spraying and mixing assembly 200 can mix sludge, water and air and spray them into the hydrolysis tank 100, so as to realize the stirring and diffusion of the sludge, promote the full mixing of the sludge and the sewage, and improve the hydrolysis efficiency.

[0031] The hydrolysis tank 100 includes a tank body 110, a sludge suction pipe 120 and a clear liquid suction pipe 130. The sludge suction pipe 120 is arranged at the bottom of the tank body 110. The sludge suction pipe 120 can precipitate the sludge at the bottom of the tank body 110, pressurize the sludge, and re-introduce the sludge into the tank body 110 to promote the diffusion of the sludge. The clear liquid suction pipe 130 is arranged at the top of the tank body 110. The suction pipe sucks the relatively clear water in the tank body 110 to be mixed with the sludge, and the water body is recycled to save water resources.

[0032] The sludge spraying and mixing assembly 200 includes a plurality of sludge spraying and mixing units 210 arranged around the pool body 110 and a driving system. Each sludge spraying and mixing unit 210 can separately spray a mixture of sludge, water, and air into the pool body 110 to promote the diffusion of activated sludge.

[0033] The sludge spraying and mixing unit 210 includes a mixing housing 211, a liquid infusion head 212 for spraying clear liquid, a gas delivery head 213 for spraying air, a sludge delivery head 214 for spraying sludge, and a nozzle 215. The liquid infusion head 212 is connected to the clear liquid suction pipe 130. The liquid infusion head 212 can receive pressurized water from the clear liquid suction pipe 130. The sludge delivery head 214 is connected to the sludge suction pipe 120. The sludge delivery head 214 can receive sludge from the sludge suction pipe 120. The liquid infusion head 212, the gas delivery head 213, the sludge delivery head 214, and the nozzle 215 are detachably connected to the mixing housing 211. The high-pressure water from the liquid infusion head 212, the sludge from the sludge delivery head 214, and the air from the gas delivery head 213 are mixed inside the mixing housing 211. The water body can be mixed with the sludge to dilute the sludge and enhance its fluidity. The air can increase the oxygen content in the mixture and promote the reproduction of bacteria in the activated sludge. The water body and air can pressurize the mixture, which helps the sludge to quickly diffuse and be evenly distributed in the pool body 110.

[0034] In some embodiments, please refer to Figure 3 and Figure 6 , the nozzle 215 is provided with a plurality of ejection holes 214a. The ejection holes 214a are inclined outward relative to the radial direction of the nozzle 215, so that the ejection range of the nozzle 215 is not limited to the front of the nozzle 215. The ejection range can diffuse outward along the radial direction of the nozzle 215, effectively expanding the action area of the nozzle 215, improving the contact degree between the ejected sludge and the sewage in the pool body 110, and improving the hydrolysis efficiency of the sewage.

[0035] The ejection holes 214a are inclined outward relative to the circumferential direction of the nozzle 215. The plurality of ejection holes 214a inclined outward along the circumferential direction can drive the sewage in the pool body 110 to rotate relatively. With the help of centrifugal force, the sewage can be thrown outward to stir the sewage, further promoting the diffusion of the sludge and improving the hydrolysis efficiency of the sewage.

[0036] In some embodiments, please refer to Figures 3 to Figure 5 , the mixing housing 211 is provided with an ejection cylinder 211a. The ejection cylinder 211a is integrally connected to and communicates with the mixing housing 211. The integral connection of the ejection cylinder 211a and the mixing housing 211 can ensure the stability and durability of the whole structure. It avoids the possible loosening or leakage problems at the connection points caused by the combination of multiple components, thus improving the reliability of the system.

[0037] The spray head 215 is threadedly connected to the ejection cylinder 211a, and the spray head 215 can be conveniently disassembled and replaced. When cleaning, repairing, or replacing the spray head 215 is required, the user only needs to rotate the spray head 215 to easily remove and install it, significantly improving the maintenance efficiency of the system.

[0038] In the specific implementation process, a threaded hole is provided inside the ejection cylinder 211a, and an external thread is provided on the outer wall of the spray head 215. The spray head 215 is inserted into the threaded hole and threadedly connected to the threaded hole together.

[0039] In some embodiments, a connecting portion 211b protrudes from the outside of the mixing housing 211. The connecting portion 211b is a square connecting block, and a screw hole is provided at one end of the square connecting block away from the mixing housing 211. It can be connected to the inner wall of the tank body 110 through bolts, so that the mixing housing 211 is stably connected to the tank body 110, ensuring the stability of the entire spray mixing unit and preventing displacement or vibration during the high-pressure spraying process.

[0040] When installing and fixing the sludge spray mixing unit 210, multiple sludge spray mixing units 210 are arranged obliquely upward. Multiple spray heads 215 cooperate with each other to form a rotating flow pattern in the tank body 110, driving the liquid to rotate relative to each other in the tank body 110. The rotating flow can increase the contact area of the gas-liquid interface, improve the dissolution efficiency of oxygen in the liquid, thereby enhancing the activity of microorganisms and improving the sewage treatment effect. Through the rotating flow, the treatment environment in the entire tank body 110 is more uniform, avoiding the problem of insufficient treatment in local areas and ensuring the efficient operation of the entire hydrolysis acidification tank.

[0041] In some embodiments, please refer to Figure 5 , the liquid outlet of the liquid infusion head 212 is arranged opposite to the spray head 215, and the liquid infusion head 212 is coaxially arranged relative to the spray head 215. The liquid ejected from the liquid infusion head 212 is directly communicated with the spray head 215 through the ejection cylinder 211a, with small flow movement resistance and low energy loss. The liquid can enter the spray head 215 more directly and efficiently and mix with other components, improving the spraying efficiency and mixing quality.

[0042] The gas injection head 213 and the sludge injection head 214 are respectively located on both sides of the liquid infusion head 212, so that gas and sludge can enter the mixing housing 211 evenly from both sides. The gas and sludge can be more evenly mixed with the clear liquid, improving the uniformity and consistency of the mixture.

[0043] The gas and sludge enter the mixing area from both sides, and by utilizing the guiding effect of the central liquid flow ejected from the liquid infusion head 212, the three components form an efficient turbulent mixing state in the mixing housing 211, which can effectively enhance the contact between gas-liquid and liquid-solid, and improve the mass transfer and heat transfer efficiency.

[0044] It should be specifically noted that the drive system includes a sludge conveying unit 220, a liquid conveying unit 230, and a gas conveying unit 240. The three are integrated to form a corresponding drive system, which can provide driving pressure for the flow of sludge, clear liquid, and air.

[0045] In some embodiments, please refer to Figure 1 and Figure 7 The sludge spraying and mixing assembly 200 further includes a sludge conveying unit 220. The sludge conveying unit 220 includes a sludge pump 221 and a multi-way joint 222. The sludge pump 221 can provide stable pressure and flow rate, ensuring that the sludge maintains a constant speed and pressure during transportation, and avoiding a decrease in treatment efficiency or equipment damage caused by unstable transportation. The inlet of the sludge pump 221 is connected to the sludge suction pipe 120 through a pipeline, the outlet of the sludge pump 221 is connected to the multi-way joint 222, and the sludge conveying heads 214 of multiple sludge spraying and mixing units 210 are respectively connected to the multi-way joint 222 through pipelines. The sludge pump 221 can re-aspirate the precipitated sludge and transport it to multiple sludge spraying and mixing units 210, significantly improving the sludge transportation efficiency and ensuring that the sludge can quickly and continuously return to the hydrolysis acidification tank for treatment.

[0046] The multi-way joint 222 evenly distributes the sludge at the outlet of the sludge pump 221 to each sludge spraying and mixing unit 210, ensuring that each spraying and mixing unit receives the same amount of sludge, which helps to achieve uniform distribution of sludge in the entire hydrolysis acidification tank and avoid problems of local excess or deficiency.

[0047] In the specific implementation process, the sludge pump 221 is provided with a sludge inlet 223, and the sludge inlet 223 is connected to the sludge suction pipe 120 through a pipeline. The deposited sludge can be aspirated by the sludge pump 221, and the pressurized sludge is evenly distributed to multiple sludge spraying and mixing units 210 through the multi-way joint 222.

[0048] In some embodiments, please refer to Figure 1 and Figure 7 The sludge spraying and mixing assembly 200 further includes a liquid conveying unit 230. The liquid conveying unit 230 includes a high-pressure water pump 231 and a filter. The inlet of the high-pressure water pump 231 is connected to the filter and the clear liquid suction pipe 130 through a pipeline in sequence. The filter is used to remove impurities and particles in the clear liquid before it enters the high-pressure water pump 231, ensuring that the clear liquid entering the high-pressure water pump 231 is clean and impurity-free, which is beneficial for the high-pressure water pump 231 to pressurize the water body to a higher pressure. The high-pressure water pump 231 has a high rotation speed and large pressure, and the filtered water has little wear on the high-pressure water pump 231.

[0049] The water outlet 233 of the high-pressure water pump 231 is respectively connected to the liquid infusion heads 212 of multiple sludge spraying and mixing units 210, and conveys high-pressure water flow to the sludge spraying and mixing units 210 to dilute and pressurize the sludge. The water inlet 232 of the high-pressure water pump 231 is directly connected to a filter through a pipeline, and the filter is arranged in the cabinet.

[0050] In some embodiments, please refer to Figure 1 and Figure 7 The sludge spraying and mixing assembly 200 further includes a gas transmission unit 240. The gas transmission unit 240 includes an air pump 241. The air pump 241 is respectively connected to the gas transmission heads 213 of multiple sludge spraying and mixing units 210 through pipelines. The air pump 241 directly sucks air from the air, and after pressurization, conveys it to the sludge spraying and mixing units 210. The air pump 241 can provide a stable gas source to ensure that the gas transmission heads 213 continuously and stably eject air, fully mix with the sludge and the clear liquid, and promote the progress of the biochemical reaction. The air provided by the air pump 241 can increase the dissolved oxygen concentration in the hydrolysis acidification tank, provide a more favorable living environment for aerobic microorganisms, and promote the rapid degradation of organic matter.

[0051] Workflow: First, after assembling each component, industrial sewage is input into the hydrolysis tank 100, and the high-pressure water pump 231 starts to work, extracts the water body in the hydrolysis tank 100, and after filtration, sprays it out at high pressure from the nozzle 215 alone. Then, the air pump 241 is started, and the gas is mixed with the liquid in the mixing housing 211. The nozzle 215 sprays the water body rich in bubbles into the tank body 110, stirring the sewage while increasing the oxygen content in the sewage, providing a more favorable living environment for aerobic microorganisms, and promoting the rapid degradation of organic matter. Finally, after the hydrolysis tank 100 works for a period of time, part of the activated sludge sinks to the bottom, and then the sludge pump 221 is started to inject the sludge into the mixing housing 211, mix the sludge, water and air and spray them into the hydrolysis tank 100, so as to realize the stirring and diffusion of the sludge, promote the full mixing of the sludge and the sewage, and improve the hydrolysis efficiency.

[0052] As described above, the above is only the preferred specific embodiment 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 those skilled in the art within the technical scope disclosed by the present invention should be covered by the present invention.

Claims

1. A hydrolysis acidification tank for industrial wastewater treatment, characterized in that: include: A hydrolysis tank, the hydrolysis tank comprising a tank body, a sludge suction pipe and a clear liquid suction pipe, the sludge suction pipe being arranged at the bottom of the tank body for sucking the settled sludge; The clear liquid suction pipe is arranged on the top of the tank body to suck the upper clear liquid; A sludge spraying and mixing component, the sludge spraying and mixing component comprises a plurality of sludge spraying and mixing units arranged around the tank body and a driving system, the sludge spraying and mixing unit comprises a mixing shell, an infusion head for spraying clear liquid, an air delivery head for spraying air, a mud delivery head for spraying sludge and a nozzle, the infusion head, the air delivery head, the mud delivery head and the nozzle are detachably connected to the mixing shell, the nozzle can spray a mixture of gas, liquid and sludge from the mixing shell into the tank body to promote oxygen-enriched diffusion of the sludge; the mud delivery head is connected to the sludge suction pipe, and the infusion head is connected to the clear liquid suction pipe; the driving system can provide power for the spraying of clear liquid, sludge and air.

2. The hydrolysis acidification tank for industrial wastewater treatment according to claim 1, characterized in that: The nozzle is provided with a plurality of ejection holes, which are inclined outward relative to the radial direction and the circumferential direction of the nozzle, and are equidistantly arranged around the central axis of the nozzle. The ejection holes can expand the spraying area of ​​the nozzle.

3. The hydrolysis acidification tank for industrial wastewater treatment according to claim 1, characterized in that: The mixing shell is provided with a spray tube, the spray tube is integrally connected with the mixing shell and communicates with each other, and the spray head is threadedly connected with the spray tube.

4. The hydrolysis acidification tank for industrial wastewater treatment according to claim 1, characterized in that: A connecting portion is protruding from the outside of the mixing shell, and the connecting portion is connected to the inner wall of the pool body. The multiple sludge spray mixing units are arranged obliquely upward, and the multiple spray heads cooperate with each other to drive the liquid in the pool body to rotate relatively.

5. The hydrolysis acidification tank for industrial wastewater treatment according to claim 4, characterized in that: The liquid outlet of the infusion head is arranged relative to the nozzle, the infusion head is coaxially arranged relative to the nozzle, and the gas delivery head and the mud delivery head are arranged on both sides of the infusion head.

6. The hydrolysis acidification tank for industrial wastewater treatment according to claim 1, characterized in that: The sludge spraying and mixing component also includes a sludge delivery unit, which includes a sludge pump and a multi-way joint. The inlet of the sludge pump is connected to the sludge suction pipe through a pipeline, and the outlet of the sludge pump is connected to the multi-way joint. The sludge delivery heads of the multiple sludge spraying and mixing units are respectively connected to the multi-way joint through pipelines.

7. The hydrolysis acidification tank for industrial wastewater treatment according to claim 1, characterized in that: The sludge spray mixing component also includes an infusion unit, which includes a high-pressure water pump and a filter. The inlet of the high-pressure water pump is connected to the filter and the clear liquid suction pipe in sequence through a pipeline, and the outlet of the high-pressure water pump is respectively connected to the infusion heads of multiple sludge spray mixing units.

8. The hydrolysis acidification tank for industrial wastewater treatment according to claim 1, characterized in that: The sludge spraying and mixing component also includes an air delivery unit, which includes an air pump. The air pump is respectively connected to the air delivery heads of the plurality of sludge spraying and mixing units through pipelines.

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