Novel sludge circulation pressurizing water distribution method for anaerobic bioreactor

Abstract

The invention belongs to the technical field of environmental bioengineering, and particularly relates to a novel anaerobic bioreactor sludge circulation pressurization water distribution method which comprises the following steps: S1, intermittent water distribution of distributors is realized by adopting pneumatic switch valves, on one hand, sludge at the bottom of a reactor is not easy to deposit under intermittent high-speed fluid scouring, and on the other hand, the sludge at the bottom of the reactor is not easy to deposit under intermittent high-speed fluid scouring; wherein the anaerobic reactor water distribution system comprises an anaerobic circulating pump, a water inlet collecting pipe, an outlet main pipe, a water distribution main pipe, a water distributor branch pipe, a plurality of spray heads and a reverse water cone; s3, mixing the two streams of liquid under the rotation of an impeller of the pump, and diluting the inlet water of the high-concentration organic matters; the retention time of organic matters in the reactor is prolonged, so that the removal rate is improved; then, the ascending velocity of the sludge in the reactor is slowed down, so that the sludge can be precipitated in the three-phase reactor, and the sludge is prevented from being washed out of the reactor.

Description

Technical Field

[0001] The invention belongs to the technical field of environmental bioengineering, and in particular relates to a novel anaerobic bioreactor sludge circulation pressurized water distribution method. Background Art

[0002] In the acrylic acid and ester wastewater treatment process, the anaerobic process is the core of the wastewater treatment process. The quality of its design and operation will directly affect whether the final effluent meets the discharge standards. The design of the water distribution system is also crucial.

[0003] High fluid flow rate can increase the disturbance in the inlet area, increase the contact probability between sludge and organic matter in the inlet water, and help improve the removal rate.

[0004] However, if the flow rate is too high, the sludge in the reactor may be washed out of the reactor, and a sufficient amount of microorganisms cannot be maintained, affecting the operating stability and efficiency of the reactor. Therefore, a new anaerobic bioreactor sludge circulation pressurization water distribution method is proposed to address the above problems. Summary of the invention

[0005] In order to make up for the deficiencies of the prior art and solve at least one technical problem raised in the background technology, the present invention proposes a new anaerobic bioreactor sludge circulation pressurized water distribution method.

[0006] The technical solution adopted by the present invention to solve the technical problem is: a new anaerobic bioreactor sludge circulation pressurized water distribution method described in the present invention comprises the following steps:

[0007] S1. The pneumatic switch valve is used to realize the intermittent water distribution of each distributor. First, the sludge at the bottom of the reactor is not easy to settle under the intermittent high-speed fluid flushing. The anaerobic reactor water distribution system includes an anaerobic circulation pump, a water inlet manifold, an outlet main pipe, a water distribution main pipe, a water distributor branch pipe, a number of nozzles and a water return cone;

[0008] S2, the anaerobic cycle component water inlet manifold has a flow meter on one side leading out from the upper part of the anaerobic reactor, and the other side has a flow meter and a pneumatic regulating valve to accurately control the inlet water containing high concentrations of organic matter;

[0009] S3. As the pump impeller rotates, the two liquids are mixed to dilute the influent with high concentration of organic matter, which increases the residence time of organic matter in the reactor, which is beneficial to improving the removal rate; then the rising flow rate of sludge in the reactor is slowed down, which is beneficial to the precipitation of sludge in the three-phase reactor and reduces the sludge being washed out of the reactor.

[0010] Preferably, in S1, the specific pneumatic switch valve installation method comprises the following steps:

[0011] S11. Pneumatic switch valves are installed on each water distribution branch pipe, and there are manual valves at the front and back to facilitate isolation and maintenance in case of failure. A single reactor has a total of 32 water distribution branch pipes, 6 at the front and back form a group, and 5 in the middle form a group, for a total of 6 groups

[0012] S12. The pneumatic switch valve controls the opening and closing time of the pneumatic switch valves on each group of water distribution branches through a pre-set program. The time can be manually adjusted, such as the first group is opened for 1 minute and then closed, and then the second group is opened, and then the third group is opened after closing, and so on. It mainly utilizes the characteristics of the centrifugal pump. At a small flow rate, the pump outlet water pressure will exceed the head at the rated flow rate, so as to achieve the purpose of pressurizing and speeding up the liquid.

[0013] Preferably, the water distribution main pipe distribution method in S1 comprises the following steps:

[0014] S121, 32 water distribution branch pipes are connected to the water distribution main pipe, each branch pipe has 8 sprinklers, and there is a water reflection cone directly below each sprinkler.

[0015] Preferably, the specific parameters of the anaerobic circulation pump mentioned in S2 include the following steps:

[0016] S21, anaerobic circulation pump: flow rate 465m3 / h, head 11.2m;

[0017] S22, diameter of each branch pipe: DN65;

[0018] S23, caliber of each pneumatic valve: DN65;

[0019] S24, pump water inlet manifold: DN350;

[0020] S25, pump outlet main pipe: DN350;

[0021] S26, water distribution main: DN400;

[0022] S27, nozzle coverage area: 1m2;

[0023] S28, anti-water cone: conical, bottom diameter 220mm, height 110mm.

[0024] Preferably, the anaerobic circulation component in S1 includes an anaerobic circulation pump body; a connecting pipe is installed at the end of the anaerobic circulation pump body; a support rod is hinged at the end of the anaerobic circulation pump body; the end of the support rod is fixedly connected to a limiting ring and is symmetrically arranged; a spring sheet is fixedly connected to the inner side wall of the limiting ring; a protective sealing plate is fixedly connected to the end of the spring sheet; and a snap unit is installed at the end of the limiting ring.

[0025] Preferably, the buckle unit includes a card slot; a pair of the limiting rings are provided with a card slot inside; the ends of the limiting rings are fixedly connected with a card block; the card block is provided with a lock slot inside; the limiting ring is provided with a cavity inside; the cavity is slidably connected with a lock block; the top of the lock block is fixed with.

[0026] Preferably, a pull rod is fixedly connected to the top of the locking block; and a pull handle is fixedly connected to the top of the pull rod.

[0027] Preferably, the end of the locking block is semi-arc-shaped and matches the locking groove; the end of the limiting ring is hinged with a clamping rod through a torsion spring, and there are several clamping rods.

[0028] Beneficial effects of the present invention:

[0029] The present invention provides a novel anaerobic bioreactor sludge circulation pressurized water distribution method, by simply installing a pneumatic valve, front and rear hand valves and a reasonable water distribution nozzle and a water return cone on each water distribution pipe, and using a program that can adjust the time to control the pneumatic valve in sequence, the intermittent water distribution of each distributor is achieved, which ensures that the sludge at the bottom of the reactor is not deposited, increases the residence time of organic matter in the reactor, reduces the rising flow rate of the sludge, and reduces the amount of sludge carried out of the reactor with the water flow.

[0030] The present invention provides a novel anaerobic bioreactor sludge circulation pressurized water distribution method. When the water inlet manifold is installed, the pipeline is installed at the end of the connecting pipe, and then the support rod is rotated so that the support rod drives the limiting rings to fit each other, and then they are fixed by a buckle unit. When the limiting ring clamps the water inlet manifold, the limiting rings fit each other, so that the protective sealing plate fits on the side wall of the pipeline and then squeezes the spring sheet to open, so that the spring sheet generates elastic force to push the protective sealing plate to be tightly clamped on the side wall of the pipeline, so as to improve the connection tightness between the pipeline and the connecting pipe, and then reduce the problem of looseness between the water inlet manifold and the connecting pipe. BRIEF DESCRIPTION OF THE DRAWINGS

[0031] The drawings described herein are used to provide further understanding of the present invention and constitute a part of this application. The illustrative embodiments of the present invention and their descriptions are used to explain the present invention and do not constitute improper limitations on the present invention.

[0032] In the attached picture:

[0033] Figure 1 It is a schematic flow chart of the method of the present invention;

[0034] Figure 2 is a plan view of the present invention;

[0035] Figure 3 is a stereogram of the present invention;

[0036] Figure 4 is a cross-sectional view of the present invention;

[0037] Figure 5 It is a structural schematic diagram of the clamping rod in the present invention;

[0038] Figure 6 yes Figure 5 Enlarged view of point A in the middle.

[0039] Legend:

[0040] 1. Anaerobic circulation pump body; 21. Connecting pipe; 23. Support rod; 24. Limiting ring; 25. Shrapnel; 26. Protective sealing plate; 31. Card slot; 32. Card block; 33. Locking slot; 34. Cavity; 35. Locking block; 41. Pull rod; 42. Pull handle; 5. Clamping rod. DETAILED DESCRIPTION

[0041] The following will be combined with the drawings in the embodiments of the present invention to clearly and completely describe the technical solutions in the embodiments of the present invention. Obviously, the described embodiments are only part of the embodiments of the present invention, not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the present invention.

[0042] Specific examples are given below.

[0043] See also Figure 1-Figure 6 The present invention provides a novel anaerobic bioreactor sludge circulation pressurization water distribution method, the method comprising the following steps:

[0044] S1. The pneumatic switch valve is used to realize the intermittent water distribution of each distributor. First, the sludge at the bottom of the reactor is not easy to settle under the intermittent high-speed fluid flushing. The anaerobic reactor water distribution system includes an anaerobic circulation pump, a water inlet manifold, an outlet main pipe, a water distribution main pipe, a water distributor branch pipe, a number of nozzles and a water return cone;

[0045] S2, the anaerobic cycle component water inlet manifold has a flow meter on one side leading out from the upper part of the anaerobic reactor, and the other side has a flow meter and a pneumatic regulating valve to accurately control the inlet water containing high concentrations of organic matter;

[0046] S3. As the pump impeller rotates, the two liquids are mixed to dilute the influent with high concentration of organic matter, which increases the residence time of organic matter in the reactor, which is beneficial to improving the removal rate; then the rising flow rate of sludge in the reactor is slowed down, which is beneficial to the precipitation of sludge in the three-phase reactor and reduces the sludge being washed out of the reactor.

[0047] Further, if Figure 1-Figure 2 As shown, in S1, the specific pneumatic switch valve installation method is as follows:

[0048] S11. Pneumatic switch valves are installed on each water distribution branch pipe, and there are manual valves at the front and back to facilitate isolation and maintenance in case of failure. A single reactor has a total of 32 water distribution branch pipes, 6 at the front and back form a group, and 5 in the middle form a group, for a total of 6 groups

[0049] S12. The pneumatic switch valve controls the opening and closing time of the pneumatic switch valves on each group of water distribution branches through a pre-set program. The time can be manually adjusted, such as the first group is opened for 1 minute and then closed, and then the second group is opened, and then the third group is opened after closing, and so on. It mainly utilizes the characteristics of the centrifugal pump. At a small flow rate, the pump outlet water pressure will exceed the head at the rated flow rate, so as to achieve the purpose of pressurizing and speeding up the liquid.

[0050] Further, if Figure 1-Figure 2 As shown, the water distribution main pipe distribution method in S1 is as follows:

[0051] S121, 32 water distribution branch pipes are connected to the water distribution main pipe, each branch pipe has 8 sprinklers, and there is a water reflection cone directly below each sprinkler.

[0052] Further, if Figure 1-Figure 2 As shown, the specific parameters of the anaerobic circulation pump mentioned in S2 include the following steps:

[0053] S21, anaerobic circulation pump: flow rate 465m3 / h, head 11.2m;

[0054] S22, diameter of each branch pipe: DN65;

[0055] S23, caliber of each pneumatic valve: DN65;

[0056] S24, pump water inlet manifold: DN350;

[0057] S25, pump outlet main pipe: DN350;

[0058] S26, water distribution main: DN400;

[0059] S27, nozzle coverage area: 1m2;

[0060] S28, anti-water cone: conical, bottom diameter 220mm, height 110mm.

[0061] Further, if Figure 3-Figure 6As shown, the anaerobic circulation component in S2 includes an anaerobic circulation pump body 1; a connecting pipe 21 is installed at the end of the anaerobic circulation pump body 1; a support rod 23 is hinged at the end of the anaerobic circulation pump body 1; the end of the support rod 23 is fixedly connected to a limiting ring 24, and is symmetrically arranged; an elastic sheet 25 is fixedly connected to the inner side wall of the limiting ring 24; a protective sealing plate 26 is fixedly connected to the end of the elastic sheet 25; a buckle unit is installed at the end of the limiting ring 24; when the anaerobic circulation pump body 1 is working for a long time, the end of the water inlet manifold connected on the surface will be unstable and loose during installation, When installing the water inlet manifold, the pipe is installed at the end of the connecting pipe 21, and then the support rod 23 is rotated so that the support rod 23 drives the limiting ring 24 to fit together, and then fixed by the snap unit. When the limiting ring 24 clamps the water inlet manifold, the limiting ring 24 fits together so that the protective sealing plate 26 fits on the side wall of the pipe and then squeezes the spring sheet 25 to open, so that the spring sheet 25 generates elastic force to push the protective sealing plate 26 to be tightly clamped on the side wall of the pipe, so as to improve the connection tightness between the pipe and the connecting pipe 21, and then reduce the problem of looseness between the water inlet manifold and the connecting pipe 21.

[0062] Further, if Figure 3-Figure 6 As shown, the buckle unit includes a clamping groove 31; a pair of clamping grooves 31 are opened inside the limiting rings 24; a clamping block 32 is fixedly connected to the end of the limiting ring 24; a locking groove 33 is opened inside the clamping block 32; a cavity 34 is opened inside the limiting ring 24; a locking block 35 is slidably connected inside the cavity 34; and a top of the locking block 35 is fixedly connected. During operation, when the limiting rings 24 are fitted together, the clamping block 32 at the end of the limiting ring 24 is inserted into the inside of the clamping groove 31, and then the locking block 35 is squeezed so that the locking block 35 is squeezed and contracted into the inside of the cavity 34, and then the elastic force 36 is squeezed to generate an elastic force. When the locking groove 33 and the cavity 34 are aligned with each other, the elastic force generated by 36 pushes the locking block 35 to be inserted into the inside of the locking groove 33 for clamping and fixing, so that the limiting rings 24 are clamped and fixed when they are merged.

[0063] Further, if Figure 3-Figure 6 As shown, a pull rod 41 is fixedly connected to the top of the locking block 35; a pull handle 42 is fixedly connected to the top of the pull rod 41; during operation, when the limiting ring 24 needs to be disassembled, the pull handle 42 is pulled to drive the pull rod 41 to slide upward, so that the pull rod 41 pulls the locking block 35 to shrink into the cavity 34, and then the limiting rings 24 are separated from each other to remove the water inlet manifold from the end of the connecting pipe 21 to complete the disassembly work.

[0064] Further, if Figure 3-Figure 6As shown, the end of the locking block 35 is semi-arc-shaped and matches the locking groove 33; the end of the limiting ring 24 is hinged with a clamping rod 5 through a torsion spring, and there are several clamping rods 5; when working, the clamping rod 5 is installed at the end of the limiting ring 24, and when the water inlet manifold is connected, when the limiting ring 24 is passed through, the clamping rod 5 is squeezed and clamped on the side wall of the water inlet manifold to achieve the effect of support and fixation.

[0065] Working principle: When the anaerobic circulation pump body 1 works for a long time, the water inlet manifold connected on the surface may become unstable and loose at the end during installation. When installing the water inlet manifold, the pipe is installed at the end of the connecting pipe 21, and then the support rod 23 is rotated so that the support rod 23 drives the limiting ring 24 to fit together, and then fixed by the buckle unit. When the limiting ring 24 clamps the water inlet manifold, the limiting ring 24 fits together so that the protective sealing plate 26 fits on the side wall of the pipe and then squeezes the spring sheet 25 to open, so that the spring sheet 25 generates elastic force to push the protective sealing plate 26 to clamp tightly on the side wall of the pipe, so as to improve the connection tightness between the pipe and the connecting pipe 21, and then reduce the problem of looseness between the water inlet manifold and the connecting pipe 21; when the limiting rings 24 fit together, the block 32 at the end of the limiting ring 24 is inserted The locking block 35 is inserted into the interior of the card slot 31, and then the locking block 35 is squeezed and retracted into the interior of the cavity 34, and then the elastic force 36 is squeezed to generate an elastic force. When the locking slot 33 and the cavity 34 are aligned with each other, the elastic force generated by 36 pushes the locking block 35 to be inserted into the interior of the locking slot 33 for clamping and fixing, so that the limiting ring 24 is clamped and fixed when it is merged; when the limiting ring 24 needs to be disassembled, the pull handle 42 is pulled to drive the pull rod 41 to slide upward, so that the pull rod 41 pulls the locking block 35 to retract into the interior of the cavity 34, and then the limiting rings 24 are separated from each other to remove the water inlet manifold from the end of the connecting pipe 21 to complete the disassembly work; by installing a clamping rod 5 at the end of the limiting ring 24, when the water inlet manifold is connected, when the limiting ring 24 is passed through, the clamping rod 5 is squeezed and clamped on the side wall of the water inlet manifold to achieve the effect of supporting and fixing.

[0066] The above shows and describes the basic principles, main features and advantages of the present invention. Those skilled in the art should understand that the present invention is not limited to the above embodiments, and the above embodiments and descriptions are only for explaining the principles of the present invention. Without departing from the spirit and scope of the present invention, the present invention may have various changes and improvements, and these changes and improvements all fall within the scope of the present invention to be protected.

Claims

1. A novel anaerobic bioreactor sludge circulation pressurization water distribution method, the method comprising the following steps: S1. The pneumatic switch valve is used to realize the intermittent water distribution of each distributor. First, the sludge at the bottom of the reactor is not easy to settle under the intermittent high-speed fluid flushing. The anaerobic reactor water distribution system includes an anaerobic circulation pump, a water inlet manifold, an outlet main pipe, a water distribution main pipe, a water distributor branch pipe, a number of nozzles and a water return cone; S2, the anaerobic cycle component water inlet manifold has a flow meter on one side leading out from the upper part of the anaerobic reactor, and the other side has a flow meter and a pneumatic regulating valve to accurately control the inlet water containing high concentrations of organic matter; S3. As the pump impeller rotates, the two liquids are mixed to dilute the influent with high concentration of organic matter, which increases the residence time of organic matter in the reactor, which is beneficial to improving the removal rate; then the rising flow rate of sludge in the reactor is slowed down, which is beneficial to the precipitation of sludge in the three-phase reactor and reduces the sludge being washed out of the reactor.

2. A novel anaerobic bioreactor sludge circulation pressurized water distribution method as claimed in claim 1, characterized in that: In S1, the specific pneumatic switch valve installation method is as follows: S11. Pneumatic switch valves are installed on each water distribution branch pipe, and there are manual valves at the front and back to facilitate isolation and maintenance in case of failure. A single reactor has a total of 32 water distribution branch pipes, 6 at the front and back form a group, and 5 in the middle form a group, for a total of 6 groups S12. The pneumatic switch valve controls the opening and closing time of the pneumatic switch valves on each group of water distribution branches through a pre-set program. The time can be manually adjusted, such as the first group is opened for 1 minute and then closed, and then the second group is opened, and then the third group is opened after closing, and so on. It mainly utilizes the characteristics of the centrifugal pump. At a small flow rate, the pump outlet water pressure will exceed the head at the rated flow rate, so as to achieve the purpose of pressurizing and speeding up the liquid.

3. A novel anaerobic bioreactor sludge circulation pressurized water distribution method as claimed in claim 1, characterized in that: The water distribution main pipe distribution method in S1 is as follows: S121, 32 water distribution branch pipes are connected to the water distribution main pipe, each branch pipe has 8 sprinklers, and there is a water reflection cone directly below each sprinkler.

4. A novel anaerobic bioreactor sludge circulation pressurized water distribution method as claimed in claim 3, characterized in that: The specific parameters of the anaerobic circulation pump mentioned in S2 include the following steps: S21, anaerobic circulation pump: flow rate 465m3 / h, head 11.2m; S22, diameter of each branch pipe: DN65; S23, caliber of each pneumatic valve: DN65; S24, pump water inlet manifold: DN350; S25, pump outlet main pipe: DN350; S26, water distribution main: DN400; S27, nozzle coverage area: 1m2; S28, anti-water cone: conical, bottom diameter 220mm, height 110mm.

5. A novel anaerobic bioreactor sludge circulation pressurized water distribution method as claimed in claim 1, characterized in that: The anaerobic circulation component in S2 comprises an anaerobic circulation pump body (1); a connecting pipe (21) is installed at the end of the anaerobic circulation pump body (1); a support rod (23) is hinged at the end of the anaerobic circulation pump body (1); the end of the support rod (23) is fixedly connected to a limit ring (24) and is symmetrically arranged; an elastic sheet (25) is fixedly connected to the inner side wall of the limit ring (24); a protective sealing plate (26) is fixedly connected to the end of the elastic sheet (25); and a buckle unit is installed at the end of the limit ring (24).

6. A novel anaerobic bioreactor sludge circulation pressurized water distribution method as claimed in claim 5, characterized in that: The buckle unit comprises a clamping groove (31); a pair of the limiting rings (24) are provided with a clamping groove (31) inside; a clamping block (32) is fixedly connected to the end of the limiting ring (24); a locking groove (33) is provided inside the clamping block (32); a cavity (34) is provided inside the limiting ring (24); a locking block (35) is slidably connected inside the cavity (34); and a (36) is fixedly connected to the top of the locking block (35).

7. A novel anaerobic bioreactor sludge circulation pressurized water distribution method as claimed in claim 6, characterized in that: A pull rod (41) is fixedly connected to the top of the locking block (35); and a pull handle (42) is fixedly connected to the top of the pull rod (41).

8. A novel anaerobic bioreactor sludge circulation pressurized water distribution method as claimed in claim 6, characterized in that: The end of the locking block (35) is semi-arc-shaped and matches the locking groove (33).

9. A novel anaerobic bioreactor sludge circulation pressurized water distribution method as claimed in claim 5, characterized in that: The end of the limiting ring (24) is hingedly connected to a clamping rod (5) via a torsion spring, and a plurality of clamping rods (5) are provided.

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