CN115677037B - Micro-power floating boat type decanter and decanting method - Google Patents

Abstract

A micro-power floating boat type decanter and a decanting method comprise a buoyancy bin floating on the liquid surface of an SBR reaction tank body and a water draining main pipe which is arranged below the liquid surface of the SBR reaction tank body and is close to the bottom of the SBR reaction tank body, wherein an annular water draining pipe is arranged outside the buoyancy bin and is used as the center of the buoyancy bin, the water draining pipe is connected and linked with the buoyancy bin, an overflow port is arranged on the side wall of the water draining pipe at the same level, a plurality of water outlets are arranged at the bottom of the water draining pipe, the water outlets of the water draining pipe are connected with the water draining main pipe through a vertically arranged water draining telescopic pipe, a water inlet and water draining device for adjusting the buoyancy of the buoyancy bin is arranged in the buoyancy bin, so that the buoyancy bin has an initial state and a water draining state, the buoyancy bin and the water draining pipe float on the liquid surface, the buoyancy bin is lowered through water inlet, and the buoyancy bin drives the water draining pipe to sink when the water draining state, and the overflow port is lower than the liquid surface; the invention has the advantages of light weight, low energy consumption, corrosion resistance, simple operation, convenient maintenance, stable operation, good effluent quality and good application prospect.

Description

A micro-powered floating boat type decanter and decanting method

Technical Field

The invention belongs to the technical field of environmental protection equipment, and in particular relates to a micro-powered floating boat type decanter and a decanting method.

Background Art

At present, the Sequencing Batch Reactor Activated Sludge Process (SBR) has been widely used in a variety of sewage/wastewater treatment processes. Since the effluent of this treatment process needs to meet the requirements of intermittent effluent according to the operation cycle (drainage must be stopped during aeration reaction and activated sludge sedimentation, and drainage must be timely after sedimentation is completed), domestic and foreign manufacturers have developed various types of decanters. The main equipment types are: rotary decanter, siphon decanter and sleeve decanter.

The rotary decanter has a large decanting load, but has a complex structure and many mechanical parts. It is easy to disturb the sludge when approaching the sludge layer. The rotating parts are prone to malfunction after working underwater for a long time. The subsequent maintenance is cumbersome and the equipment cost is high.

The sleeve type decanter drives the weir groove by a wire winch or a screw to achieve the purpose of drainage through the connection of the sleeve. It has a large decanting load, a large depth, a relatively complex structure, and a high cost. The sleeve may get stuck and cannot work normally. In addition, the lifting of the decanter requires an external power supply, and the energy consumption is relatively high.

The siphon decanter creates negative pressure between the U-tube and the short drainage pipe to siphon the water out. It has a relatively simple structure, reliable operation, low cost and low operating expenses. However, the decanting depth is low and difficult to adjust, and high design accuracy is required.

Summary of the invention

The invention solves the defects of the prior art and provides a micro-powered floating boat type decanter and a decanting method which have low energy consumption, low cost and are convenient for discharging clarified water in an SBR reaction tank.

To achieve the above-mentioned purpose, the present invention first proposes a micro-powered floating boat type decanter, comprising a buoyancy bin arranged in an SBR reaction tank body and a drainage main pipe arranged at the bottom of the SBR reaction tank body, an annular drainage pipe is arranged outside the buoyancy bin and with the buoyancy bin as the center, the drainage pipe and the buoyancy bin are interconnected and linked, overflow ports are arranged on the side walls of the drainage pipe at the same horizontal height, a plurality of water outlets are arranged at the bottom of the drainage pipe, the water outlets of the drainage pipe are connected to the drainage main pipe through a vertically arranged drainage telescopic pipe, a water inlet and drainage device for adjusting the buoyancy of the buoyancy bin is arranged in the buoyancy bin, the buoyancy bin has an initial state and a drainage state, in the initial state, the buoyancy bin and the drainage pipe float on the liquid surface, and the overflow port is higher than the liquid surface, in the drainage state, the buoyancy bin reduces the buoyancy by taking in water, and the buoyancy bin drives the drainage pipe to sink, so that the overflow port is lower than the liquid surface.

By adopting the above structure, the buoyancy of the buoyancy bin is controlled by the water inlet and drainage device of the buoyancy bin, thereby controlling the floating and sinking depths of the buoyancy bin. In this way, the sinking depth of the drainage pipe linked to the buoyancy bin is controlled so that the overflow port is lower than the liquid surface to achieve drainage. While draining, the buoyancy bin can move downward with the change of water level under the action of buoyancy, thereby achieving continuous drainage. When it is necessary to stop drainage, the buoyancy of the buoyancy bin can be increased by the water inlet and drainage device to control the floating of the buoyancy bin.

In this embodiment, the overflow ports have a variety of layout structures, preferably: the overflow ports are arranged in a continuous ring shape along the side of the drain pipe or the overflow ports are arranged at even intervals on the drain pipe.

In this embodiment, the plurality of water outlets are evenly distributed at the bottom of the drain pipe.

In this embodiment, the height at which the drainage main is arranged in the SBR reaction tank body matches the height of the liquid level after the clean water in the SBR reaction tank is discharged to the set height, and the drainage main limits the height of the buoyancy bin. When the clean water in the SBR reaction tank is discharged to the set height, the buoyancy bin will no longer drop in height due to the limiting effect of the drainage main, and after the liquid level drops below the overflow port, it will no longer be drained. By controlling the drainage of the buoyancy bin, the buoyancy bin is restored to its initial floating state. As a height limiter, the drainage main can also keep a certain distance between the overflow port and the activated sludge layer that has settled in the SBR reaction tank to ensure the effluent quality.

In this embodiment, the buoyancy tank includes an upper buoy and a lower buoy fixed coaxially, and the water inlet and water discharge device includes an electric telescopic rod, a piston, a controller and a battery. The electric telescopic rod, the controller and the battery are installed in the upper buoy, and the piston is installed in the lower buoy and is sealed and slidably connected to the inner wall of the lower buoy. The bottom of the lower buoy is open, and the battery is connected to the electric telescopic rod through the controller. The telescopic end of the electric telescopic rod is connected to the piston. The movement of the piston realizes the action of water inlet and water outlet in the lower buoy. Specifically, the electric telescopic rod drives the piston to move upward, and the clean water to be discharged in the SBR reaction tank enters the lower buoyancy tank through the bottom opening of the lower buoyancy tank. As the water in the lower buoyancy tank continues to increase, the buoyancy of the buoyancy tank gradually decreases, causing the buoyancy tank and the drain pipe to sink. When the overflow port is lower than the water level in the SBR reaction tank, drainage begins. At this time, the electric telescopic rod stops moving. At the same time, the buoyancy tank and the drain pipe move downward together with the change of water level under the action of buoyancy. After drainage is completed, the electric telescopic rod pushes the piston downward. After the water in the lower buoyancy tank is pushed out by the piston, as the water in the lower buoyancy tank is discharged, the buoyancy of the buoyancy tank gradually increases, and the buoyancy tank and the drain pipe float up, so that the overflow port is higher than the water level in the SBR reaction tank, and the buoyancy tank and the drain pipe float on the liquid surface of the SBR reaction tank again, thus achieving the purpose of automatic decanting.

In this embodiment, positioning sensors are provided at both ends of the piston running route in the lower buoy. The positioning sensor through-hole controller is connected to the electric telescopic rod. The positioning sensor is used to monitor the position of the piston movement, and the through-hole controller controls the opening and closing of the electric telescopic rod.

In this embodiment, a solar power generation system is also installed in the upper buoy, and the controller is connected to the solar power generation system and the battery through connecting lines, and the solar panel of the solar power generation system is placed on the top of the upper buoy. The battery can be charged by the solar power generation system, thereby greatly reducing energy consumption. Since the working time of the electric telescopic rod of the device is not long and does not need to be used continuously, the solar power generation system can fully guarantee the power supply of the entire device during the sunny period.

The present invention also includes a decanting method for an SBR reaction tank, which controls the buoyancy of the buoyancy tank so as to control the overflow port on the drainage pipe linked to the buoyancy tank to be lower than or higher than the liquid level of the SBR reaction tank, thereby achieving drainage control of the clean water in the SBR reaction tank.

In this embodiment, when the buoyancy of the buoyancy bin is maximum, the overflow port on the drain pipe is higher than the liquid level in the SBR reaction tank, and no water is discharged; when the buoyancy of the buoyancy bin is minimum, the buoyancy bin sinks, and the overflow port is lower than the liquid level in the SBR reaction tank, and drainage is achieved.

Compared with the prior art, the present invention has the following beneficial effects:

1. The present invention can realize the automatic lifting of the decanter in the SBR reaction tank by adjusting the buoyancy of the buoyancy chamber, without the need for special fixing or lifting devices.

2. The solar power generation system can be used to charge the battery, thereby greatly reducing energy consumption. Since the working time of the electric telescopic rod of this device is not long and does not need to be used continuously, the solar power generation system can fully guarantee the power supply of the entire device during the sunny period, greatly reducing energy consumption.

3. The annular drainage pipe and the buoyancy chamber form a whole, which makes the structure of the whole device stable, keeps it level and does not tilt during use, and operates reliably.

4. The manufacturing cost of the buoyancy chamber, drainage pipe, drainage telescopic pipe and drainage main pipe of the present invention is low.

5. The mechanical devices such as the electric telescopic rod of the present invention are sealed in the upper buoy and do not come into direct contact with sewage/wastewater, thereby ensuring the long-term operation stability of the device. Moreover, maintenance can be achieved through the inspection door on the upper buoy, which is convenient for maintenance, simple in structure and long in service life.

6. The main drainage pipe of the present invention not only has the function of drainage, but also can limit the descending depth of the buoyancy bin, so that the entire decanter can maintain a sufficient distance from the mud-water interface in the SBR reaction tank; the setting of the annular drainage pipe and its overflow outlet increases the cross-sectional area of the water flow entering the device, reduces the flow rate of drainage, and ensures that the activated sludge layer that has settled at the bottom of the SBR reaction tank is not disturbed during the drainage process, thereby ensuring the water quality of the drainage.

In summary, this device has the advantages of light weight, no need for special fixation, low energy consumption, corrosion resistance, simple operation, convenient maintenance, stable operation, good effluent water quality, etc., and has good application prospects.

BRIEF DESCRIPTION OF THE DRAWINGS

FIG1 is a schematic structural diagram of the present invention.

FIG. 2 is a top view of the present invention.

In the figure: 1. connecting line; 2. SBR reaction tank body; 3. drain pipe; 4. overflow port; 5. water outlet; 6. drain telescopic pipe; 7. drain main pipe; 8. positioning sensor; 9. piston; 10. lower buoy; 11. connecting rod; 12. upper buoy; 13. electric telescopic rod; 14. water stop valve; 15. activated sludge layer; 16. solar power generation system; 17. battery.

DETAILED DESCRIPTION

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.

In addition, the technical solutions between the various embodiments of the present invention can be combined with each other, but it must be based on the fact that ordinary technicians in the field can implement it. When the combination of technical solutions is contradictory or cannot be implemented, it should be deemed that such combination of technical solutions does not exist and is not within the scope of protection required by the present invention.

As shown in Figures 1 and 2, the present invention provides a micro-powered floating boat type decanter and a decanting method, which include: a connecting line 1, an SBR reaction tank body 2, a drain pipe 3, an overflow port 4, a water outlet 5, a drain telescopic pipe 6, a drain main pipe 7, a positioning sensor 8, a piston 9, a buoyancy chamber, a connecting rod 11, an electric telescopic rod 13, a water stop valve 14, a solar power generation system 16 and a battery 17.

A buoyancy bin is arranged in the SBR reaction tank body 2, and the buoyancy bin floats on the liquid surface in the SBR reaction tank body 2. A drainage main pipe 7 is arranged at the bottom of the SBR reaction tank body 2 above the activated sludge layer, and a water stop valve 14 is installed on the outlet of the drainage main pipe 7. An annular drainage pipe 3 is arranged outside the buoyancy bin with the buoyancy bin as the center. The drainage pipe 3 and the buoyancy bin are interconnected and linked with each other through a connecting rod 11. An overflow port 4 is arranged on the side wall of the drainage pipe 3 at the same horizontal height. The overflow port 4 is arranged in a ring-shaped continuous manner along the side of the drainage pipe 3, or multiple overflow ports 4 are evenly spaced at intervals on the drainage pipe 3. A plurality of water outlets 5 are arranged at the bottom of the drainage pipe 3, and the multiple water outlets are evenly arranged at the bottom of the drainage pipe 3. The water outlet 5 of the drainage pipe 3 is connected to the drainage main pipe 7 through a vertically arranged drainage telescopic pipe 6. In this embodiment, the drainage telescopic pipe 6 is a pipeline that can be telescoped in the vertical direction.

The buoyancy bin is provided with a water inlet and drainage device for adjusting the buoyancy of the buoyancy bin. Under the action of the water inlet and drainage device, the buoyancy bin has an initial state and a drainage state. In the initial state, the water inlet and drainage device controls the drainage of the buoyancy bin, the buoyancy bin and the drainage pipe 3 float on the liquid surface, and the overflow port 4 is higher than the liquid surface. In the drainage state, the water inlet and drainage device controls the water inlet of the buoyancy bin, so that the buoyancy bin drives the drainage pipe 3 to sink to a certain depth, at which time the overflow port 4 is just below the liquid surface. The buoyancy of the buoyancy bin is controlled by the water inlet and drainage device of the buoyancy bin, thereby controlling the sinking depth of the buoyancy bin, and it can be maintained at a set depth, so that the sinking depth of the drainage pipe 3 linked to the buoyancy bin can be controlled, so that the overflow port 4 is below the liquid surface to achieve drainage.

In this embodiment, the height of the drainage main pipe 7 arranged in the SBR reaction tank body 2 matches the liquid level after the clean water in the SBR reaction tank is discharged to the set height. When the clean water in the SBR reaction tank is discharged to the set height, the buoyancy bin is limited by the drainage main pipe 7 and the height no longer decreases. After the liquid level drops below the overflow port 4, the buoyancy bin is controlled to drain water so that the buoyancy bin returns to the initial floating state. As a height limiter, the drainage main pipe 7 can also keep a certain distance between the buoyancy bin and the activated sludge layer 15 that has settled in the SBR reaction tank to ensure the effluent water quality.

The buoyancy chamber specifically includes an upper buoy 12 and a lower buoy 10 which are coaxially fixed. An electric telescopic rod 13, a controller and a battery 17 are installed in the upper buoy 12. The battery 17 is connected to the electric telescopic rod 13 through the controller. The bottom of the lower buoy 10 is open. A piston 9 is installed in the lower buoy 10 which is sealingly and slidably connected to the inner wall of the lower buoy 10. The telescopic end of the electric telescopic rod 13 is connected to the piston 9. Positioning sensors 8 are provided at both ends of the route along which the piston 9 runs in the lower buoy 10. The positioning sensor 8 is connected to the electric telescopic rod 13 through a through-hole controller. The positioning sensor 8 can sense the position reached by the piston 9, thereby controlling the opening and closing of the electric telescopic rod 13. The buoyancy of the lower buoy 10 can be adjusted by the movement of the piston 9. Specifically, the electric telescopic rod 13 drives the piston 9 to move upward, and the clean water to be discharged in the SBR reaction tank enters the lower buoy 10 through the bottom opening of the lower buoy 10. The lower buoy 10 is in a water-filled state. At this time, the buoyancy of the lower buoy 10 is reduced, and the buoyancy bin and the drain pipe 3 sink, so that the overflow port 4 is lower than the water level in the SBR reaction tank, and drainage begins. At this time, the electric telescopic rod stops moving, and the buoyancy bin and the drain pipe move downward together with the change of water level under the action of buoyancy to achieve continuous drainage; after the drainage is completed, the electric telescopic rod 13 pushes the piston 9 to move downward. After the water in the lower buoy 10 is pushed out by the piston 9, the buoyancy of the lower buoy 10 becomes larger, and the buoyancy bin and the drain pipe 3 float up, so that the overflow port 4 is higher than the water level in the SBR reaction tank, and the buoyancy bin and the drain pipe 3 float on the liquid surface of the SBR reaction tank again.

In this embodiment, a solar power generation system 16 is also installed in the upper buoy 12 , and the controller is connected to the solar power generation system 16 and the battery through the connecting line 1 , respectively. The solar panel of the solar power generation system 16 is placed on the top of the upper buoy 12 .

The specific workflow of the present invention is as follows:

In the initial state, it is the water inlet reaction sedimentation stage. At this time, the buoyancy tank floats on the liquid surface. At this time, the water level in the SBR reaction tank is lower than the overflow port and no water will flow out.

In the drainage state, the electric telescopic rod 13 is started to allow water to enter the buoyancy bin. At this time, the buoyancy of the buoyancy bin is reduced, and the buoyancy bin and the drainage pipe 3 sink, so that the overflow port 4 is lower than the water level in the SBR reaction tank, and drainage begins. The water enters the drainage telescopic pipe and the drainage main pipe through the overflow port and is discharged.

Stop drainage, resume water inlet, and react and settle:

After the buoyancy bin sinks to a predetermined position, the buoyancy bin stops moving downward due to the limiting effect of the drainage main pipe 7. At this time, the electric telescopic rod 13 is started to drain the buoyancy bin, and the buoyancy bin and the drainage pipe 3 float up. The overflow port 4 is higher than the water level in the SBR reaction tank, and the buoyancy bin and the drainage pipe 3 float on the liquid surface of the SBR reaction tank again.

The above are only preferred embodiments of the present invention, and are not intended to limit the patent scope of the present invention. All equivalent structural changes made based on the contents of the present invention's specification and drawings, or directly/indirectly applied in other related technical fields, are included in the patent protection scope of the present invention.

Claims (6)

1. A micro-powered floating boat type decanter, characterized in that it comprises a buoyancy tank floating on the liquid surface of an SBR reaction tank body (2) and a drainage main pipe (7) arranged below the liquid surface of the SBR reaction tank body (2) and close to the bottom of the SBR reaction tank body (2), an annular drainage pipe (3) is arranged outside the buoyancy tank and with the buoyancy tank as the center, the drainage pipe (3) and the buoyancy tank are interconnected and linked, an overflow port (4) is arranged on the side wall of the drainage pipe (3) at the same horizontal height, and the overflow port (4) is arranged along The drainage pipe (3) is continuously arranged in a circular shape on the side, and a plurality of water outlets (5) are arranged at the bottom of the drainage pipe (3). The water outlets (5) of the drainage pipe (3) are connected to the drainage main pipe (7) through a vertically arranged drainage telescopic pipe (6). A water inlet and drainage device for adjusting the buoyancy of the buoyancy tank is arranged in the buoyancy tank; the buoyancy tank comprises an upper buoy (12) and a lower buoy (10) fixed coaxially, and the water inlet and drainage device comprises an electric telescopic rod (13), a piston (9), a controller and a battery (17). The electric telescopic rod (13), the controller and the storage battery (17) are installed in the upper buoy (12); the piston (9) is installed in the lower buoy (10) and is sealed and slidably connected to the inner wall of the lower buoy (10); the bottom of the lower buoy (10) is open; the storage battery (17) is connected to the electric telescopic rod (13) through the controller; the telescopic end of the electric telescopic rod (13) is connected to the piston (9); the movement of the piston (9) realizes the action of water inlet and water outlet in the lower buoy (10); the lower buoy (10) is opened at the bottom; the storage battery (17) is connected to the electric telescopic rod (13) through the controller; the telescopic end of the electric telescopic rod (13) is connected to the piston (9); the movement of the piston (9) realizes the action of water inlet and water outlet in the lower buoy (10); 0) Positioning sensors (8) are provided at both ends of the running route of the inner piston (9), the positioning sensors (8) are connected to the electric telescopic rod (13) through a through-hole controller, the positioning sensors (8) are used to monitor the position of the movement of the piston (9), and the through-hole controller controls the opening and closing of the electric telescopic rod (13); the height of the drainage main pipe (7) arranged in the SBR reaction tank body (2) matches the liquid level height after the clean water in the SBR reaction tank is discharged to a set height, and the drainage main pipe (7) limits the height of the buoyancy tank to be lowered; The buoyancy chamber has an initial state and a drainage state. In the initial state, the buoyancy chamber and the drainage pipe (3) float on the liquid surface, and the overflow port (4) is higher than the liquid surface. In the drainage state, the buoyancy chamber is reduced by water inflow, and the buoyancy chamber drives the drainage pipe (3) to sink, so that the overflow port (4) is lower than the liquid surface. 2. The micro-powered floating boat type decanter as claimed in claim 1, characterized in that the overflow ports (4) are evenly spaced on the drain pipe (3). 3. The micro-powered floating boat type decanter as claimed in claim 1, characterized in that: a plurality of said water outlets (5) are evenly arranged at the bottom of the drainage pipe (3). 4. The micro-powered floating decanter as described in claim 1 is characterized in that: a solar power generation system (16) is also installed in the upper buoy (12), and the controller is connected to the solar power generation system (16) and the battery (17) respectively through a connecting line (1), and the solar cell panel of the solar power generation system (16) is placed on the top of the upper buoy (12). 5. A decanting method for an SBR reaction tank, characterized in that: the micro-powered floating boat decanter as described in claim 1 is used to control the buoyancy of the buoyancy tank, thereby controlling the overflow port (4) on the drainage pipe (3) linked to the buoyancy tank to be lower than or higher than the liquid level of the SBR reaction tank, thereby achieving drainage control of the clean water in the SBR reaction tank. 6. The decanting method for an SBR reaction tank as claimed in claim 5, characterized in that: when the buoyancy of the buoyancy bin is maximum, the overflow port (4) on the drain pipe (3) is higher than the liquid level in the SBR reaction tank, and no water is discharged; when the buoyancy of the buoyancy bin is minimum, the buoyancy bin sinks, and the overflow port (4) is lower than the liquid level in the SBR reaction tank, and drainage is achieved.