Installation method of biochemical pool body sedimentation device

Abstract

The application discloses a biochemical pool body sedimentation device installation method, first, installing the sedimentation device water outlet pipeline on the outer wall of the sedimentation device and fixing and installing the walking frame with the roller on the upper end of the sedimentation device; then, installing the guide rail on the upper end of the biochemical pool body side wall; placing the rollers on the walking frame sides of the sedimentation device on the guide rail through hoisting; through the external tension of the crane and manual assistance, pushing the water outlet pipeline of the sedimentation device into the water outlet hole on the biochemical pool body side wall to realize the sealed insertion; checking and adjusting the parallelism between the upper end edge of the sedimentation device and the upper end edge of the biochemical pool body to keep the parallelism within the specified range, fixing and positioning the sedimentation device and the biochemical pool body; testing the water outlet, confirming that the installation meets the requirements, the application realizes that the sedimentation device can be completely attached to the downstream pool body, the whole is coordinated, the installation method is simple, the operation is convenient, and the application is easy to implement; while meeting the requirements, the application can effectively reduce the influence on the customer production.

Description

Technical Field

[0001] This invention relates to the field of water treatment technology, and in particular to a method for installing a sedimentation device in a biological treatment tank. Background Technology

[0002] In recent years, as the country has imposed increasingly stringent environmental protection requirements, many older sewage treatment plants have faced the problem of weak treatment capacity and failure to meet standards. Among these, the biological treatment tank is a key link in wastewater treatment, and the effective sludge volume reflects the capacity of the biological treatment tank. To improve the treatment capacity of the biological treatment tank, it is necessary to increase the sludge concentration of the biological treatment. However, building new tanks not only requires new land but also incurs significant costs.

[0003] Many companies are now adding sedimentation tanks or modifying existing tanks to increase the sludge concentration in their biological treatment tanks, which is a relatively economical and effective method. There are also companies that are building entirely new integrated steel-structured biological treatment tanks, incorporating sedimentation tanks inside the existing tank and placing them on top of it or elsewhere.

[0004] In existing methods, adding an integrated biological treatment system saves space compared to the traditional method of separating biological treatment tanks and sedimentation tanks, but it still increases costs. Adding a sedimentation tank to the existing biological treatment tank to increase sludge concentration is more economical, but the method is relatively crude. Simply placing a sedimentation device in the tank without properly integrating it with the original tank will affect the biological treatment effect of the biological treatment tank and the sludge sedimentation effect. Summary of the Invention

[0005] To overcome the above shortcomings, the present invention provides a method for installing a sedimentation device in a biological tank. This method can effectively combine the upstream and downstream inlets and outlets of the original biological tank, and is convenient, quick to install, and has minimal impact on customers.

[0006] The technical solution adopted by this invention to solve its technical problem is: a method for installing a sedimentation device in a biological treatment tank, comprising the following steps:

[0007] Step 1: Preparation of sedimentation device: Install the sedimentation device outlet pipe connected to its outlet on the outer wall of the sedimentation device, and fix the traveling frame with rollers on the upper end of the sedimentation device.

[0008] Step 2: Guide rail installation: Fix and install the guide rail on the upper part of the side wall of the biological treatment tank near the water outlet;

[0009] Step 3: Hoisting the sedimentation unit: Hoist the sedimentation unit to the installation area and ensure that the rollers on both sides of the traveling frame on the sedimentation unit are placed on the guide rails.

[0010] Step 4: Outlet Connection: After the sedimentation device is initially positioned, the outlet pipe of the sedimentation device is pushed into the outlet hole on the side wall of the biological tank by external pulling force of the crane and manual assistance to achieve a sealed connection.

[0011] Step 5: Adjustment and fixing of sedimentation device: After the outlet pipe of sedimentation device is connected to the outlet hole on the side wall of biological tank, check and adjust the parallelism between the upper edge of sedimentation device and the upper edge of biological tank to keep it within the specified range, and fix the sedimentation device to the biological tank.

[0012] Step 6: Test the water output to confirm that the installation meets the requirements.

[0013] As a further improvement of the present invention, the treatment of the water outlet of the biological tank is as follows: If the water outlet of the biological tank is a pipe structure embedded in the side wall of the biological tank, the water outlet pipe of the sedimentation device is directly inserted into the water outlet of the biological tank; if the water outlet on the side wall of the biological tank is a square or round hole directly formed on the concrete tank wall, the water outlet of the biological tank is treated as follows: a short pipe with a flange is selected, the short pipe is inserted into the water outlet on the side wall of the biological tank, the flange at one end of the short pipe is fixedly installed on the concrete wall of the inner side wall of the biological tank with stainless steel expansion bolts, and a sealing ring is fixedly installed in the short pipe. The water outlet pipe of the sedimentation device is directly inserted into the short pipe and makes sealing contact with the sealing ring.

[0014] As a further improvement of the present invention, the length of the short tube is consistent with the thickness of the side wall of the biochemical tank, so that the two ends of the short tube are aligned with the inner and outer side walls of the biochemical tank respectively.

[0015] As a further improvement of the present invention, the outer diameter of the short pipe is smaller than the inner diameter of the outlet hole of the biological treatment tank.

[0016] As a further improvement of the present invention, one end of the short pipe is welded to the inner hole of the annular flange to form an integral structure.

[0017] As a further improvement of the present invention, the water outlet pipe on the outlet of the sedimentation device is a stainless steel round pipe. After pushing the water outlet pipe of the sedimentation device into the short pipe installed on the biological tank, ensuring that the water outlet pipe is tightly attached to the sealing ring, the traveling frame is then hammered in the insertion direction by mechanical external force to make the outer wall of the sedimentation device and the flange surface in close contact.

[0018] As a further improvement of the present invention, when installing the guide rail in step two, several positioning steel plates are first installed at intervals on the upper end of the side wall of the biochemical tank by means of expansion bolts. Then the guide rail is placed on the upper end of the side wall of the biochemical tank and the guide rail is welded to each positioning steel plate.

[0019] As a further improvement of the present invention, the guide rail is an I-beam made of carbon steel.

[0020] As a further improvement of the present invention, after the sedimentation device and the biochemical tank are installed and adjusted, two channel steels are fixedly installed on the guide rail. The two channel steels are respectively pressed against the two sides of the rollers on the walking frame along the length of the guide rail, thereby realizing the fixed positioning of the sedimentation device and the biochemical tank.

[0021] As a further improvement of the present invention, after the guide rail is installed in step two, guide rail baffles are fixedly installed at both ends of the guide rail along its length. The guide rail baffles are higher than the surface of the guide rail and can prevent the rollers on the walking frame from continuing to roll forward.

[0022] The beneficial technical effects of this invention are as follows: By installing a stainless steel effluent pipe on the sedimentation device and inserting it into the effluent outlet of the biological treatment tank, the sludge mixed with sewage in the biological treatment tank can be directly sedimented. The effluent after sedimentation smoothly enters the downstream tank. By selecting the connection method between the sedimentation device's effluent pipe and the biological treatment tank's effluent outlet according to different types of effluent outlets, a sealed connection between the sedimentation device's effluent pipe and the biological treatment tank's effluent outlet is ensured, preventing sewage from the biological treatment tank from flowing directly into the downstream tank without passing through the sedimentation device. This invention achieves a complete fit between the sedimentation device and the downstream tank, ensuring overall coordination. The installation method of this invention can meet the installation requirements of different types of sedimentation devices, facilitating the design of sedimentation devices according to the need for tank modification or new tank construction. Furthermore, the installation method of the sedimentation device is simple, convenient to operate, and easy to implement, effectively reducing the impact on customer production while meeting requirements. Attached Figure Description

[0023] Figure 1 This is a cross-sectional view illustrating the structural principle of the biochemical tank.

[0024] Figure 2 A schematic diagram illustrating the principle of treating the water outlet of the biological treatment tank;

[0025] Figure 3 for Figure 2 Enlarged view of section A in the middle;

[0026] Figure 4 Schematic diagram for laying guide rails on a biochemical tank;

[0027] Figure 5 Front view of the sedimentation unit in its initial hoisted-in position;

[0028] Figure 6 A top view showing the initial hoisting and placement of the sedimentation unit;

[0029] Figure 7 This is a diagram showing the completed connection between the sedimentation device's outlet pipe and the biological tank's outlet hole.

[0030] Figure 8 This is a diagram showing the completed state of the sedimentation device being fixed in place on the biological treatment tank. Detailed Implementation

[0031] Example: A method for installing a sedimentation device in a biological treatment tank, comprising the following steps:

[0032] Step 1: Preparation of sedimentation device: Install the sedimentation device outlet pipe 9 on the outer wall of the sedimentation device 11 and connect it to the outlet. Fix the traveling frame 7 with rollers on the upper end of the sedimentation device 11.

[0033] Step 2: Guide rail installation: Fix guide rail 6 on the upper end of the side wall of the biological tank 12 near the water outlet side;

[0034] Step 3: Hoisting of sedimentation device 11: Hoist the sedimentation device 11 to the installation area and place the rollers on both sides of the traveling frame 7 on the sedimentation device 11 on the guide rail 6.

[0035] Step 4: Outlet connection: After the sedimentation device 11 is initially positioned, the outlet pipe of the sedimentation device 11 is pushed into the outlet hole 1 on the side wall of the biological tank 12 by external pulling force of the crane and manual assistance to achieve a sealed connection.

[0036] Step 5: Adjustment and fixing of sedimentation device 11: After the outlet pipe of sedimentation device 11 is connected to the outlet hole 1 on the side wall of biological tank 12, check and adjust the parallelism between the upper edge of sedimentation device 11 and the upper edge of biological tank 12 to keep it within the specified range, and fix sedimentation device 11 and biological tank 12 in position.

[0037] Step 6: Test the water output to confirm that the installation meets the requirements.

[0038] An outlet pipe is installed on the outside of the sedimentation device 11 and inserted into the outlet hole 1 of the biological treatment tank 12. The wastewater mixed with sludge in the biological treatment tank flows upward into the sedimentation device 11 and is blocked by the baffle of the sedimentation device 11. The sludge sinks back into the biological treatment tank, and the wastewater flows smoothly from the outlet pipe of the sedimentation device 11 into the downstream tank 13 or the secondary sedimentation tank. The wastewater is further treated in the downstream tank. The installation method of the sedimentation device 11 is simple, convenient and labor-saving. It can be used for the construction of new biological treatment tanks 12 or for the renovation and upgrading of existing biological treatment tanks 12.

[0039] Treatment of the water outlet of the biological tank: If the water outlet 1 of the biological tank 12 is a pipe structure buried in the side wall of the biological tank 12, the water outlet pipe of the sedimentation device 11 is directly inserted into the water outlet 1 of the biological tank; if the water outlet 1 on the side wall of the biological tank 12 is a square or round hole directly formed on the concrete tank wall, the water outlet 1 of the biological tank is treated as follows: Select a short pipe 2 with a flange, insert the short pipe 2 into the water outlet 1 on the side wall of the biological tank 12, fix the flange at one end of the short pipe 2 to the concrete wall of the inner side wall of the biological tank 12 with stainless steel expansion bolts 4, and fix the sealing ring 3 in the short pipe 2. Insert the water outlet pipe of the sedimentation device 11 directly into the short pipe 2 and seal it in contact with the sealing ring 3.

[0040] If the wastewater in the biological treatment tank 12 is connected to the downstream biological treatment tank 12 or the secondary sedimentation tank via a pipeline (i.e., the outlet hole 1 is a pipeline), then there is no need to treat the outlet hole 1 of the biological treatment tank. The outlet pipeline on the sedimentation device 11 can be well connected to the outlet hole 1 of the pipeline structure. If the biological treatment tank 12 is connected to the downstream biological treatment tank 12 or the secondary sedimentation tank via a square or round hole in the concrete tank wall, then the outlet hole 1 used for connection needs to be treated. This is done by installing a short pipe 2 with a flange on the biological treatment tank. The flange is tightly connected to the inner wall of the biological treatment tank 12. The short pipe 2 with a sealing ring 3 is inserted into the outlet hole 1 of the biological treatment tank 12. In this way, the outlet pipeline on the sedimentation device 11 and the short pipe 2 can be sealed and connected, preventing untreated sewage from directly entering the downstream biological treatment tank 12 or the secondary sedimentation tank through the gap between the outlet hole 1 and the outlet pipeline.

[0041] The length of the short pipe 2 is consistent with the thickness of the side wall of the biological treatment tank 12, so that both ends of the short pipe 2 are aligned with the inner and outer side walls of the biological treatment tank 12, respectively. The length of the short pipe 2 is consistent with the thickness of the tank body, and it is flush with the tank wall after placement. No welding flange is required on the side of the short pipe 2 that connects to the downstream biological treatment tank 12 or the secondary sedimentation tank.

[0042] The outer diameter of the short pipe 2 is smaller than the inner diameter of the outlet hole 1 of the biological treatment tank. The outer diameter of the short pipe 2 is one size smaller than the outlet hole 1 (square or round hole) on the biological treatment tank 12 for connecting with the downstream biological treatment tank 12 or the secondary sedimentation tank, which facilitates placement.

[0043] One end of the short pipe 2 is welded to the inner hole of the annular flange to form an integral structure. The short pipe 2 (with an internal rubber inner ring as a sealing ring 3) is placed at the original opening position by welding a single-sided flange. The flange is fixed to the concrete wall with stainless steel expansion bolts 4, which facilitates the installation and positioning of the short pipe 2 on the biological tank 12.

[0044] The outlet pipe of the sedimentation device 11 is a stainless steel round pipe. After pushing the outlet pipe of the sedimentation device 11 into the short pipe 2 installed on the biological tank 12, ensuring that the outlet pipe is tightly fitted with the sealing ring 3, the traveling frame 7 is then hammered in the insertion direction by mechanical force to make the outer wall of the sedimentation device 11 in tight contact with the flange surface. The outlet pipe is made of stainless steel round pipe, which can accommodate square or round outlet holes 1. When the outlet pipe of the sedimentation device 11 is inserted into the outlet hole 1 of the biological tank 12, it is not necessary to use too much lateral force. As long as the outlet pipe is tightly fitted with the sealing ring 3 in the short pipe 2, the traveling frame 7 is hammered a few times in the direction of entering the round pipe by mechanical force, which saves manpower.

[0045] In step two, when installing the guide rail 6, several positioning steel plates 5 are first installed at intervals on the upper end of the side wall of the biochemical tank 12 using expansion bolts. Then, the guide rail 6 is placed on the upper end of the side wall of the biochemical tank 12, and the guide rail is welded to each positioning steel plate 5. Now, the positioning steel plates 5 are installed on the upper end of the side wall of the biochemical tank 12 using expansion bolts, and then the guide rail 6 is welded to the positioning steel plates 5. This facilitates the fixed installation of the guide rail 6, and the installation is firm and stable. Alternatively, the guide rail can be directly installed on the top surface of the side wall of the tank using screws. This is an equivalent replacement structure that is easily conceived by those skilled in the art upon seeing this application, and it also falls within the scope of protection of this application.

[0046] The guide rail 6 is made of carbon steel I-beams. This facilitates the fixing and movement of the pulleys of the sedimentation device 11.

[0047] After the sedimentation device 11 and the biological tank 12 are installed and adjusted, two channel steels 10 are fixedly installed on the guide rail. The two channel steels 10 are respectively pressed against the rollers on the walking frame 7 on both sides along the length of the guide rail, thus fixing the sedimentation device 11 and the biological tank 12 in place. The slots on the channel steels 10 match the I-beams. The channel steels 10 can be directly fixed to the guide rail 6 or fixed to the side wall of the biological tank 12, such as by welding or screwing them to the guide rail 6, or by bolting them to the side wall of the biological tank 12. The sedimentation device 11 is positioned by blocking the rollers with the channel steels 10. Alternatively, the rollers can be positioned to the guide rail by a pin structure. This is an equivalent replacement structure that is easy for a person skilled in the art to conceive of when reading this application, and it also falls within the scope of protection of this application.

[0048] After the guide rail is installed in step two, guide rail baffles 8 are fixedly installed at both ends of the guide rail 6 along its length. The guide rail baffles 8 protrude above the surface of the guide rail 6 and prevent the rollers on the traveling frame 7 from continuing to roll forward. The guide rail baffles 8 can prevent the traveling frame 7 from detaching from the guide rail 6 during movement and causing danger.

Claims

1. A method for installing a sedimentation device in a biological treatment tank, characterized in that: Includes the following steps: Step 1: Preparation of sedimentation device: Install the sedimentation device outlet pipe (9) connected to its outlet on the outer wall of the sedimentation device (11), and fix the walking frame (7) with rollers on the upper end of the sedimentation device. Step 2: Guide rail installation: Fix guide rail (6) on the upper end of the side wall of the biological tank (12) near the water outlet side. Step 3: Hoisting the sedimentation unit: Hoist the sedimentation unit to the installation area and ensure that the rollers on both sides of the traveling frame on the sedimentation unit are placed on the guide rails. Step 4: Outlet connection: After the sedimentation device is initially in place, the water outlet pipe of the sedimentation device is pushed into the water outlet hole (1) on the side wall of the biochemical tank by external pulling force of the crane and manual assistance to achieve a sealed connection. Treatment of the water outlet of the biological tank: If the water outlet of the biological tank is a pipe structure buried in the side wall of the biological tank, the water outlet pipe of the sedimentation device is directly inserted into the water outlet of the biological tank; if the water outlet on the side wall of the biological tank is a square or round hole directly formed on the concrete tank wall, the water outlet of the biological tank is treated as follows: Select a short pipe with a flange (2), insert the short pipe into the water outlet on the side wall of the biological tank, fix the flange at one end of the short pipe to the concrete wall of the inner side wall of the biological tank with stainless steel expansion bolts (4), and fix the sealing ring (3) in the short pipe, and directly insert the water outlet pipe of the sedimentation device into the short pipe and seal it in contact with the sealing ring. Step 5: Adjustment and fixing of sedimentation device: After the outlet pipe of sedimentation device is connected to the outlet hole on the side wall of biological tank, check and adjust the parallelism between the upper edge of sedimentation device and the upper edge of biological tank to keep it within the specified range, and fix the sedimentation device to the biological tank. Step 6: Test the water output to confirm that the installation meets the requirements.

2. The method for installing the sedimentation device in the biological treatment tank according to claim 1, characterized in that: The length of the short tube is the same as the thickness of the side wall of the biochemical tank, so that the two ends of the short tube are aligned with the inner and outer walls of the biochemical tank, respectively.

3. The method for installing the sedimentation device in a biological treatment tank according to claim 1, characterized in that: The outer diameter of the short pipe is smaller than the inner diameter of the outlet hole of the biological treatment tank.

4. The method for installing the sedimentation device in the biological treatment tank according to claim 1, characterized in that: One end of the short pipe is welded to the inner hole of the annular flange to form an integral structure.

5. The method for installing the sedimentation device in a biological treatment tank according to claim 1, characterized in that: The outlet pipe of the sedimentation device is a stainless steel round pipe. After pushing the outlet pipe of the sedimentation device into the short pipe installed on the biological tank, and ensuring that the outlet pipe is tightly attached to the sealing ring, the traveling frame is hammered in the insertion direction by mechanical external force to make the outer wall of the sedimentation device and the flange surface in close contact.

6. The method for installing the sedimentation device in a biological treatment tank according to claim 1, characterized in that: When installing the guide rail in step two, first install several positioning steel plates (5) at intervals on the upper end of the side wall of the biochemical tank by fixing them with expansion bolts. Then place the guide rail on the upper end of the side wall of the biochemical tank and weld the guide rail to each positioning steel plate.

7. The method for installing the sedimentation device in a biological treatment tank according to claim 6, characterized in that: The guide rail is made of carbon steel I-beams.

8. The method for installing the sedimentation device in a biological treatment tank according to claim 1 or 7, characterized in that: After the sedimentation device and the biological tank are installed and adjusted, two channel steels (10) are fixedly installed on the guide rail. The two channel steels are respectively pressed against the two sides of the roller on the walking frame along the length of the guide rail, thus realizing the fixed positioning of the sedimentation device and the biological tank.

9. The method for installing the sedimentation device in a biological treatment tank according to claim 1, characterized in that: After the guide rail is installed in step two, guide rail baffles (8) are fixedly installed at both ends of the guide rail in the length direction. The guide rail baffles are higher than the surface of the guide rail and can prevent the rollers on the walking frame from continuing to roll forward.

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