A yellowish fecal water treatment device and treatment method

Abstract

The present application relates to a kind of yellow pig feces processing equipment, including adjusting pool and bioreactor, water distributor is installed in bioreactor, and several vertical distribution's jet ring is installed on water distributor by vertical support pipe, jet ring includes upper shell and lower shell, upper shell is coaxially arranged in the upper side of lower shell, so that the up inner spray flow gap is formed at upper inner baffle and lower inner baffle, and the down outer spray flow gap is formed at upper outer baffle and lower outer baffle.By the circulation of internal rising and external falling formed in the reaction tank by jet ring, it can drive light weight filler to move uniformly in the reaction tank, improve the uniformity of light weight filler distribution in the reaction tank, avoid dead angle in the reaction tank, and improve the processing efficiency of yellow pig feces.

Description

Technical Field

[0001] This invention relates to the field of wastewater treatment technology, and in particular to a yellow swill treatment device and treatment method. Background Technology

[0002] The processing of soybean products generates a large amount of wastewater, including swill, which is rich in high concentrations of organic matter. Direct discharge into the environment can cause pollution. Anaerobic-aerobic processes fully utilize the advantages of anaerobic microorganisms—their ability to withstand high concentrations and heavy loads of wastewater—and the rapid growth and high water quality of aerobic microorganisms, making them widely used in swill treatment. Moving-bed biofilm reactors (MBBRs) are a novel type of biofilm reactor that can function as both anaerobic and aerobic reactors, offering advantages such as resistance to shock loads, low sludge production, and long sludge age.

[0003] However, existing moving bed biofilm reactors suffer from uneven movement of packing material during operation, resulting in dead zones to varying degrees within the reactor and reducing wastewater treatment efficiency. Furthermore, when used as anaerobic reactors, the movement of packing material is often achieved through mechanical stirring, which can easily cause damage to the packing material and wear on the equipment, thus reducing its service life.

[0004] Based on the above-mentioned technical problems, this application proposes a yellow swill treatment device and treatment method. Summary of the Invention

[0005] The purpose of this invention is to provide a yellow swill treatment device and method to solve the technical problems mentioned in the background art. This purpose is achieved through the following technical solutions:

[0006] A yellow swill treatment device includes an equalization tank and a bioreactor. The equalization tank is equipped with a sludge screen, which divides the tank into an inlet zone and an outlet zone. A submersible pump is installed in the outlet zone. The bioreactor includes a reaction tank with an inlet and a sludge discharge outlet at the bottom, and an outlet and an exhaust outlet at the top. The inlet is connected to the submersible pump, the sludge discharge outlet is connected to a sludge tank, and the outlet is connected to downstream equipment. The reaction tank is filled with lightweight packing material, and a mesh plate is installed at the upper part of the tank's interior, below the height of the outlet. A water distributor is installed inside the tank, connected to the outlet via a jet pump. A support pipe is vertically installed on the water distributor, and several jet rings are mounted on the support pipe, spaced vertically. The spray ring is coaxially arranged with the reaction tank and connected to the water distributor via a support pipe. The spray ring includes an upper shell and a lower shell. The upper shell includes an upper annular plate, an upper inner baffle, and an upper outer baffle. The upper inner baffle is fixed to the lower side of the inner edge of the upper annular plate, and the upper outer baffle is fixed to the lower side of the outer edge of the upper annular plate. The height of the upper inner baffle is less than the height of the upper outer baffle. The lower shell includes a lower annular plate, a lower inner baffle, and a lower outer baffle. The lower inner baffle is fixed to the upper side of the inner edge of the lower annular plate, and the lower outer baffle is fixed to the upper side of the outer edge of the lower annular plate. The height of the lower inner baffle is greater than the height of the lower outer baffle. The upper shell is coaxially arranged on the upper side of the lower shell, so that the upper inner baffle and the lower inner baffle form an upward inner spray slit, and the upper outer baffle and the lower outer baffle form a downward outer spray slit.

[0007] Furthermore, the ends of the upper inner and outer flanges are inclined toward the outer side of the upper annular plate; the ends of the lower inner and outer flanges are inclined toward the inner side of the lower annular plate.

[0008] Furthermore, both the upper and lower shells are inserted into the support tube, and the support tube has an inlet located within the space enclosed by the upper and lower shells.

[0009] Furthermore, the upper shell is fixedly connected to the support tube, and the lower shell is movably connected to the support tube. An adjusting component is sleeved on the support tube, and the adjusting component is located on the lower side of the lower shell.

[0010] Furthermore, the bioreactor includes an anaerobic bioreactor and an aerobic bioreactor. The inlet of the anaerobic bioreactor is connected to a submersible pump, the inlet of the aerobic bioreactor is connected to the outlet of the anaerobic bioreactor, a lime water tank is installed at the exhaust port of the anaerobic bioreactor, and an aeration pipe is installed at the bottom of the aerobic bioreactor.

[0011] Furthermore, the cross-section of the jet ring is 2 / 3 of the cross-section of the reaction vessel; the distance between the uppermost jet ring and the lower end face of the mesh plate is 200-300mm, and the distance between the lowermost jet ring and the bottom of the reaction vessel is 200-300mm.

[0012] Furthermore, the height-to-diameter ratio of the reaction vessel is 3-4:1, and the filling ratio of lightweight packing is 45%-55%.

[0013] Furthermore, the mesh panel has an arc-shaped structure with a bottom in the middle and a high edge.

[0014] A method for treating any of the above-mentioned yellow swill treatment devices includes the following steps:

[0015] Step S1: Pour the water used to wash soybeans, the water used to soak soybeans, the yellow swill, and the cleaning water into the equalization tank to form mixed wastewater;

[0016] Step S2: Remove solid impurities from the mixed wastewater using a sludge removal screen;

[0017] Step S3: Start the jet pump, which forms a circulating flow in the reaction tank with the jet ring rising on the inside and falling on the outside, thus moving the light packing material in the reaction tank.

[0018] Step S4: Start the submersible pump to pump the treated mixed wastewater into the bioreactor for further treatment.

[0019] Furthermore, the hydraulic retention time of the bioreactor is 2-3 hours.

[0020] The technical solutions provided in this application have at least the following technical effects or advantages:

[0021] 1. By forming an internal rising and external falling circulation in the reaction tank through the spray ring, the light packing material can be moved evenly in the reaction tank, improving the uniformity of the distribution of the light packing material in the reaction tank, avoiding dead corners in the reaction tank, and improving the treatment efficiency of yellow swill.

[0022] 2. By fitting the upper and lower shells onto the support tube and allowing the lower shell to move up and down, the size of the inner and outer jet slits can be adjusted by regulating the distance between the upper and lower shells, thereby regulating the jet pressure and adjusting the circulation inside the reaction tank to improve the reaction effect.

[0023] 3. By setting multiple spray rings, a low-speed water flow can be formed in the reaction tank to avoid the biofilm on the lightweight packing material being detached due to high-speed water flow, thus ensuring the quality of wastewater treatment.

[0024] 4. The jet ring creates an internal rising and external falling circulation within the reaction tank, which can quickly disperse and mix the incoming water flow; at the same time, the jet pump recirculates the treated swill, enabling repeated treatment of the swill and improving the treatment quality.

[0025] 5. By agitating the lightweight packing material with a jet ring, damage to the lightweight packing material caused by mechanical stirring structures can be avoided, reducing wear on the lightweight packing material and equipment, and extending the service life of the equipment. Attached Figure Description

[0026] To more clearly illustrate the technical solutions in the embodiments of this application or the prior art, the drawings used in the description of the embodiments or the prior art will be briefly introduced below. Obviously, the drawings described below are only some embodiments recorded in this application. For those skilled in the art, other drawings can be obtained based on these drawings without creative effort.

[0027] Figure 1 This is a schematic diagram of the processing device structure according to an embodiment of this application;

[0028] Figure 2 This is a schematic diagram of the bioreactor structure according to an embodiment of this application;

[0029] Figure 3 This is a schematic diagram of the jet ring structure in an embodiment of this application;

[0030] Figure 4 for Figure 3 A magnified view of a portion of the image.

[0031] Attached reference numerals: 1. Equalization tank; 2. Sludge removal bar; 3. Submersible pump; 4. Bioreactor; 4A. Anaerobic bioreactor; 4B. Aerobic bioreactor; 41. Reaction tank; 411. Inlet; 412. Sludge discharge port; 413. Outlet; 414. Exhaust port; 42. Mesh plate; 43. Aeration pipe; 44. Jet pump; 5. Lime water tank; 6. Lightweight packing material; 7. Water distributor; 8. Support pipe; 81. Inlet; 82. Adjusting component; 9. Jet ring; 91. Upper shell; 911. Upper annular plate; 912. Upper inner baffle; 913. Upper outer baffle; 92. Lower shell; 921. Lower annular plate; 922. Lower inner baffle; 923. Lower outer baffle; 93. Inner jet slit; 94. Outer jet slit. Detailed Implementation

[0032] To further illustrate the technical means and effects of the present invention in achieving its intended purpose, the following detailed description of the specific implementation methods, structures, features, and effects of the present invention, in conjunction with the accompanying drawings and preferred embodiments, is provided below.

[0033] Example 1

[0034] like Figure 1 The illustrated yellow swill treatment device includes an equalization tank 1 and two bioreactors 4, each bioreactor 4 comprising an anaerobic bioreactor 4A and an aerobic bioreactor 4B. The equalization tank 1, the anaerobic bioreactor 4A, and the aerobic bioreactor 4B are connected sequentially.

[0035] like Figure 1As shown, the equalization tank 1 is a rectangular concrete tank. A sludge removal screen 2 is installed inside the equalization tank 1, dividing the equalization tank 1 into an inlet zone on the left and an outlet zone on the right. A submersible pump 3 is installed in the outlet zone. The sludge removal screen 2 can be a rotary screen or a self-cleaning screen. The working surface of the sludge removal screen 2 faces the inlet zone and is used to remove large particulate solid impurities from the yellow swill to avoid affecting the operation of the bioreactor 4.

[0036] Because the yellow swill is discharged intermittently, the equalization tank 1 can maintain the continuous water intake of the two bioreactors 4, settle the small particles of yellow swill, and dilute the yellow swill with the water used to wash and soak soybeans and the cleaning water, thereby reducing the impact on the bioreactors 4.

[0037] like Figure 1 , Figure 2 As shown, the bioreactor 4 includes a reaction tank 41, which is a tank with an arc-shaped bottom and top. The height-to-diameter ratio of the reaction tank 41 is 4:1. An inlet 411 is provided on the side of the bottom of the reaction tank 41, and an outlet 413 is provided on the side of the top of the reaction tank 41. The inlet of the anaerobic bioreactor 4A is connected to the submersible pump 3, used to send the yellow swill from the equalization tank 1 into the anaerobic bioreactor 4A for treatment. The inlet of the aerobic bioreactor 4B is connected to the outlet of the anaerobic bioreactor 4A, used to send the anaerobic-treated yellow swill into the aerobic bioreactor 4B for treatment. The outlet of the aerobic bioreactor 4B is connected to a storage tank (not shown). The water in the storage tank can be discharged or used for other purposes after testing.

[0038] like Figure 1 , Figure 2 As shown, a sludge discharge port 412 is located at the center of the bottom of the reaction tank 41. The sludge discharge ports 412 of both the anaerobic bioreactor 4A and the aerobic bioreactor 4B are connected to the sludge tank via sludge pumps (not shown). An exhaust port 414 is located at the center of the top of the reaction tank 41. A lime water tank 5 is installed at the exhaust port of the anaerobic bioreactor 4A. The lime water tank 5 is filled with saturated lime water to remove gases such as hydrogen sulfide generated in the anaerobic bioreactor 4A, preventing odor from affecting the environment. An aeration pipe 43 is installed at the bottom of the aerobic bioreactor 4B to blow air into the aerobic bioreactor 4B, increasing the oxygen content of the swill.

[0039] like Figure 1 , Figure 2As shown, the reaction tank 41 is filled with lightweight packing material 6, with a filling ratio of 45%-55%, preferably 50%. This ensures that the lightweight packing material 6 meets the requirements of the biological reaction without causing biofilm detachment due to excessive collisions, thus guaranteeing the efficiency and effectiveness of the biological treatment. Anaerobic or aerobic bacteria grow on the surface of the lightweight packing material 6 to achieve anaerobic or aerobic reactions. An arc-shaped mesh plate 42, with a lower center and higher edges, is installed at the upper part of the interior of the reaction tank 41. The mesh plate 42 is lower than the height of the outlet 413 to prevent the lightweight packing material 6 from being lost. At the same time, the arc-shaped structure guides the movement of the lightweight packing material 6, avoiding dead corners.

[0040] like Figures 2-4 As shown, two water distributors 7 are installed inside the reaction vessel 41. The two water distributors 7 are fixed to the bottom and top of the reaction vessel 41, respectively. Five support pipes 8 are vertically connected between the two water distributors 7. Three jet rings 9 are installed between the support pipes 8. The jet rings 9 are arranged coaxially with the reaction vessel 41, and the three jet rings 9 are evenly spaced in the vertical direction. The number of jet rings 9 is determined by the height of the reaction vessel 41; the higher the reaction vessel 41, the more jet rings 9 are required.

[0041] The cross-section of the jet ring 9 is 2 / 3 of the cross-section of the reaction tank 41, maximizing the lifting effect of the lightweight packing 6. The distance between the uppermost jet ring 9 and the lower end face of the mesh plate 42 is 250mm, and the distance between the lowermost jet ring 9 and the bottom of the reaction tank 41 is also 250mm. Too small a gap would increase the flow resistance of the lightweight packing 6 at the top and bottom of the reaction tank 41, increasing friction between the packing 6 and causing biofilm detachment. Too large a gap would create dead zones at the top and bottom of the reaction tank 41, reducing the equipment's processing efficiency.

[0042] like Figure 3 , Figure 4 As shown, the jet ring 9 includes an upper shell 91 and a lower shell 92, both of which are inserted into the support tube 8. The upper shell 91 includes an upper annular plate 911, an upper inner flange 912, and an upper outer flange 913. The upper inner flange 912 is fixed to the lower side of the inner edge of the upper annular plate 911, and the upper outer flange 913 is fixed to the lower side of the outer edge of the upper annular plate 911, forming an annular structure with an inverted U-shaped cross-section. The height of the upper inner flange 912 is less than the height of the upper outer flange 913, and the ends of both the upper inner flange 912 and the upper outer flange 913 are inclined towards the outer side of the upper annular plate 911.

[0043] like Figure 4As shown, the lower housing 92 includes a lower annular plate 921, a lower inner flange 922, and a lower outer flange 923. The lower inner flange 922 is fixed to the upper side of the inner edge of the lower annular plate 921, and the lower outer flange 923 is fixed to the upper side of the outer edge of the lower annular plate 922, forming a U-shaped annular structure. The height of the lower inner flange 922 is greater than the height of the lower outer flange 923, and the ends of both the lower inner flange 922 and the lower outer flange 923 are inclined towards the inner side of the lower annular plate 921.

[0044] like Figure 3 , Figure 4 As shown, the upper shell 91 is coaxially fastened to the upper side of the lower shell 92, and an upward and inwardly inclined inner jet slit 93 is formed at the upper inner flange 912 and the lower inner flange 922, and a downward and outwardly inclined outer jet slit 94 is formed at the upper outer flange 913 and the lower outer flange 923.

[0045] like Figures 1-4 As shown, an inlet 81 is provided on the support pipe 8, located within the space enclosed by the upper shell 91 and the lower shell 92. The spray ring 9 is connected to the support pipe 8, and the water distributor 7 is connected to the outlet 413 via the spray pump 44. The spray pump 44 returns part of the effluent to the spray ring 9 through the water distributor 7, and sprays it out through the inner spray slit 93 and the outer spray slit 94, thus forming a rising and falling circulation in the middle of the reaction tank 41. On the one hand, this can drive the lightweight packing material to move evenly in the reaction tank, improve the uniformity of the distribution of the lightweight packing material in the reaction tank, avoid dead corners in the reaction tank, and improve the treatment efficiency of yellow swill. On the other hand, it can form a circulation in the reaction tank with a low-speed water flow, avoiding the shedding of the biofilm on the lightweight packing material caused by the high-speed water flow, ensuring the quality of sewage treatment. At the same time, it can also avoid damage to the lightweight packing material caused by the mechanical stirring structure, reduce the wear of the lightweight packing material and equipment, and extend the service life of the equipment. In addition, the incoming water flow can be quickly dispersed and mixed; at the same time, the treated swill can be recycled through a jet pump, which can realize the repeated treatment of swill and improve the treatment quality of swill.

[0046] Preferred, such as Figure 4As shown, the upper shell 91 is fixedly connected to the support tube 8, and the lower shell 92 is movably connected to the support tube 8, allowing the lower shell 92 to move up and down relative to the upper shell 91. An adjusting member 82 is fitted onto the support tube 8, located below the lower shell 92, and is used to limit the movement of the lower shell 92. The adjusting member 82 can be a nut, and the outer wall of the support tube 8 has external threads; the adjusting member 82 is screwed onto the support tube 8. When the adjusting member 82 moves upward, the lower shell 92 moves upward closer to the upper shell 91, at which point the distance between the inner jet slit 93 and the outer jet slit 94 decreases, and the jet pressure increases. When the adjusting member 82 moves downward, the lower shell 92 moves downward away from the upper shell 91, at which point the distance between the inner jet slit 93 and the outer jet slit 94 increases, and the jet pressure decreases. By adjusting the distance between the upper and lower shells, the size of the inner and outer jet slits can be adjusted, thereby regulating the jet pressure and adjusting the circulation within the reaction vessel to improve the reaction efficiency.

[0047] Example 2

[0048] A treatment method for yellow swill in Embodiment 1 includes the following steps:

[0049] Step S1: Introduce the washing water, soaking water, swill, and cleaning water into the equalization tank to form mixed wastewater. Mixing these substances in the equalization tank ensures a continuous influent flow to both bioreactors, allows small particles of the swill to settle, and dilutes the swill, reducing its impact on the bioreactors.

[0050] Step S2: Use a screen to remove solid impurities from the mixed wastewater. This prevents solid impurities from being pumped into the bioreactor and reduces sludge formation in the bioreactor.

[0051] Step S3: Start the jet pump, which forms a circulating flow in the reaction tank with the jet ring rising on the inside and falling on the outside, thus moving the lightweight packing material in the reaction tank.

[0052] Step S4: Start the submersible pump to pump the treated mixed wastewater into the bioreactor for further treatment.

[0053] The hydraulic retention time of the anaerobic bioreactor is 3 hours, and that of the aerobic bioreactor is 2 hours. A portion of the effluent is recirculated using a jet pump, which both moves the lightweight packing material within the reactor and facilitates the recycling of some of the yellow swill, thus improving the treatment quality of the yellow swill.

[0054] The above description is merely a preferred embodiment of the present invention and is not intended to limit the present invention in any way. Although the present invention has been disclosed above with reference to preferred embodiments, it is not intended to limit the present invention. Any person skilled in the art can make some modifications or alterations to the above-disclosed technical content to create equivalent embodiments without departing from the scope of the present invention. Any simple modifications, equivalent changes and alterations made to the above embodiments based on the technical essence of the present invention without departing from the scope of the present invention shall still fall within the scope of the present invention.

Claims

1. A yellowish pig feces water treatment apparatus, characterized by comprising: The utility model provides a sewage treatment system, including the adjusting pool and the biological reactor, the sewage treatment system is characterized by the following, the adjusting pool is installed with the sewage removal grid in, the sewage removal grid divides the adjusting pool into the water inlet area and the water outlet area, is installed with the submersible pump in the water outlet area, the biological reactor includes the reaction tank, the lower portion of reaction tank is equipped with the water inlet and the sludge outlet, the top of reaction tank is equipped with the water outlet and the exhaust port, the water inlet is connected with the submersible pump, the sludge outlet is connected with the sludge pool, and the water outlet is connected with downstream equipment, and the reaction tank is filled with lightweight filler, and the inside of reaction tank is installed with the net board in the upper end, and the net board is lower than the height of water outlet, and the inside of reaction tank is installed with the water distributor, and the water distributor is connected with the water outlet through the jet pump, and the water distributor is vertically installed with the support pipe, and a plurality of jet rings are installed on the support pipe, and a plurality of jet rings are spaced apart in the vertical direction, and the jet ring is coaxially arranged with the reaction tank, and the jet ring is communicated with the water distributor through the support pipe, and the jet ring includes the upper casing and the lower casing, the upper casing includes the upper annular plate, the upper inner baffle and the upper outer baffle, the upper inner baffle is fixed in the lower side of the upper annular plate, the upper outer baffle is fixed in the lower side of the outer edge of the upper annular plate, and the height of the upper inner baffle is less than the height of the upper outer baffle, and the lower casing includes the lower annular plate, the lower inner baffle and the lower outer baffle, the lower inner baffle is fixed in the upper side of the inner edge of the lower annular plate, the lower outer baffle is fixed in the upper side of the outer edge of the lower annular plate, and the height of the lower inner baffle is greater than the height of the lower outer baffle, and the upper casing is coaxially arranged on the upper side of the lower casing, so that the upper inner baffle and the lower inner baffle form the inner jet flow gap upwards, and the upper outer baffle and the lower outer baffle form the outer jet flow gap downwards, and the cross section of the jet ring is 2 / 3 of the cross section of the reaction tank, and the distance between the uppermost jet ring and the net board lower end is 200-300mm, and the distance between the lowermost jet ring and the bottom of the reaction tank is 200-300mm.

2. The device for treating yellowish water according to claim 1, characterized in that, The end of the upper inner baffle and the end of the upper outer baffle are inclined towards the outer side of the upper annular plate, and the end of the lower inner baffle and the end of the lower outer baffle are inclined towards the inner side of the lower annular plate.

3. The device for treating yellowish pig feces water according to claim 1, wherein The upper casing and the lower casing are inserted on the support pipe, and the support pipe is provided with an inlet, and the inlet is located in the space surrounded by the upper casing and the lower casing.

4. The device for treating yellowish pig feces water according to claim 3, wherein The upper casing is fixedly connected with the support pipe, the lower casing is movably connected with the support pipe, the support pipe is sleeved with an adjusting member, and the adjusting member is located on the lower side of the lower casing.

5. The device for treating yellowish water according to claim 1, characterized in that, The biological reactor includes an anaerobic biological reactor and an aerobic biological reactor, the water inlet of the anaerobic biological reactor is connected with the submersible pump, the water inlet of the aerobic biological reactor is communicated with the water outlet of the anaerobic biological reactor, a lime water tank is arranged at the exhaust port of the anaerobic biological reactor, and an aeration pipe is arranged at the bottom of the aerobic biological reactor.

6. The device for treating yellowish pig feces water according to claim 1, wherein The height-diameter ratio of the reaction tank is 3-4:1, and the filling ratio of the lightweight filler is 45%-55%.

7. The device for treating yellowish water according to claim 1, characterized in that, The net plate is an arc surface structure with middle bottom edge height.

8. A method of treating the yellowish pigmented fecal water using the device according to any one of claims 1 to 7, characterized in that, The method comprises the following steps: Step S1, introducing bean washing water, bean soaking water, yellow water and cleaning water into a conditioning tank to form mixed sewage; Step S2, removing solid impurities in the mixed sewage by using a decontamination grid; Step S3, starting a jet flow pump to form a circulating flow in the reaction tank by a jet flow ring, which drives the light filler to move in the reaction tank; Step S4, starting a submersible pump to pump the treated mixed sewage into a biological reactor for treatment.

9. The treatment method of a yellow water treatment apparatus according to claim 8, wherein The hydraulic retention time of the biological reactor is 2-3h.

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