A sewage treatment device for water conservancy construction

Abstract

The invention discloses a water conservancy construction sewage treatment device, relates to the technical field of sewage treatment, and comprises: a clarification mechanism, a desludging mechanism and a membrane filtering mechanism; the clarification mechanism comprises a cyclone shell, and a cyclone mechanism is installed on the upper part of the cyclone shell and a stirring mechanism is installed on the bottom of the cyclone shell, and the cyclone shell is provided with three; the desludging mechanism comprises a first dehydrator, a second dehydrator and a third dehydrator which are coaxially arranged, a dehydration motor is installed at the end of the first dehydrator, and the output shaft of the dehydration motor serves as the power shaft of the first dehydrator, the second dehydrator and the third dehydrator; the invention uses sewage treatment equipment composed of the clarification mechanism, the desludging mechanism and the membrane filtering mechanism, so that sewage mixed with a coagulant aid is clarified in the clarification mechanism, and impurities precipitated at the bottom of the clarification mechanism are dehydrated and deslagging by the desludging mechanism, and the membrane filtering mechanism is used to filter the supernatant, thereby obtaining relatively clean water.

Description

Technical Field

[0001] The invention relates to the technical field of sewage treatment, and in particular to a water conservancy construction sewage treatment device. Background Art

[0002] Sewage treatment is the process of purifying sewage to meet the water quality requirements for discharge into a water body or reuse. Sewage treatment is widely used in various fields such as construction, agriculture, transportation, energy, petrochemicals, environmental protection, urban landscape, medical care, and catering. It is also increasingly entering the daily lives of ordinary people. According to the source of sewage, sewage treatment is generally divided into production sewage treatment and domestic sewage treatment. Production sewage includes industrial sewage, agricultural sewage, and medical sewage, while domestic sewage is sewage generated in daily life, which refers to a complex mixture of various forms of inorganic and organic matter.

[0003] During water conservancy construction, a lot of sewage will be generated due to dredging at the bottom of the river. However, direct discharge of sewage will cause sewage pollution to the environment. Sewage treatment devices are often used to treat water conservancy construction sewage. When using traditional sewage treatment devices, coagulants are added to the sewage to precipitate impurities in the sewage. However, after adding the coagulant, the precipitation in the sedimentation tank is time-consuming, causing the equipment to occupy a large space on the site. At the same time, the precipitation in the sedimentation tank is time-consuming. At the same time, it is inconvenient to dehydrate the sludge after precipitation. Summary of the invention

[0004] The present invention aims at the deficiencies of the prior art and provides the following technical solutions: a water conservancy construction sewage treatment device, comprising: a clarification mechanism, a desludging mechanism and a membrane filtration mechanism;

[0005] The clarification mechanism includes a cyclone shell, a cyclone mechanism installed on the upper part of the cyclone shell, and a stirring mechanism installed on the bottom of the cyclone shell, and the cyclone shell is provided with three;

[0006] The desludging mechanism comprises a first dehydrator, a second dehydrator and a third dehydrator which are coaxially arranged, a dehydration motor is installed at the end of the first dehydrator, and the output shaft of the dehydration motor serves as the power shaft of the first dehydrator, the second dehydrator and the third dehydrator, the slag discharge pipes installed at the lower ends of the three cyclone shells are connected to the first dehydrator, the second dehydrator and the third dehydrator in sequence, the sewage discharge end of the third dehydrator is connected to the feed end of the second dehydrator, the sewage discharge end of the second dehydrator is connected to the feed end of the first dehydrator, the sewage discharge end of the first dehydrator is connected to the upper end of the cyclone shell through a sewage return pipe, a second water pump for sewage transportation is installed on the upper part of the sewage return pipe, and the first dehydrator, the second dehydrator and the third dehydrator are all installed with mud discharge pipes for mud discharge at the upper ends;

[0007] The membrane filtration mechanism includes a filter cartridge installed at the water outlet end of the tail cyclone housing, a filter mesh plate for coarse filtration of sewage is installed at the bottom of the filter cartridge, a filter membrane for secondary filtration of sewage is also installed at the bottom of the filter cartridge, and the filter membrane is located below the filter mesh plate, and a drain pipe for drainage is installed at the bottom of the filter cartridge.

[0008] As an improvement of the above technical solution, the cyclone mechanism includes a water collecting pipe arranged on the outside of the upper end of the cyclone shell, a branch pipe is welded between the water collecting pipe and the cyclone shell, a guide cover is welded on the inner surface of the upper end of the cyclone shell, a diversion pipe is welded on the upper end of the guide cover, and a first water pump is installed in the middle of the diversion pipe.

[0009] As an improvement of the above technical solution, a water inlet pipe for sewage injection is installed on the side surface of the water collecting pipe at the front end, the water collecting pipes at the middle and tail are connected to the first water pump, and the first water pump at the tail is connected to the filter cartridge.

[0010] As an improvement of the above technical solution, the stirring mechanism includes a reduction motor installed at the bottom of the cyclone shell, the output shaft of the reduction motor is fixed with a transmission rod, and the transmission rod is rotatably installed at the bottom of the cyclone shell, a connecting frame is welded on the outer surface of the upper part of the cyclone shell, and a cyclone plate is welded at the end of the connecting frame.

[0011] As an improvement of the above technical solution, eight swirl plates are arranged inside the cyclone housing, each swirl plate is fixed to the transmission rod through three connecting frames, and the swirl plate is an arc-shaped plate-shaped component.

[0012] As an improvement of the above technical solution, the water outlet end of the branch pipe is tangent to the upper part of the cyclone shell.

[0013] As an improvement of the above technical solution, an arc-shaped groove is arranged on the upper part of the filter screen plate, and a slag collecting groove is opened in the arc-shaped groove of the filter screen plate.

[0014] As an improvement of the above technical solution, a slot is provided on the lower surface of the filter screen plate.

[0015] Beneficial effects of the present invention:

[0016] 1. Through the sewage treatment equipment composed of a clarification mechanism, a desludging mechanism and a membrane filtration mechanism, the sewage mixed with a coagulant is clarified in the clarification mechanism, and the impurities precipitated at the bottom of the clarification mechanism are dehydrated and deslagging by the desludging mechanism, and the membrane filtration mechanism is used to filter the supernatant, thereby obtaining relatively clean water; the clarification mechanism is composed of a cyclone shell, a cyclone mechanism installed on the upper part of the cyclone shell, and a stirring mechanism installed at the bottom of the cyclone shell, so that the sewage is swirl in the cyclone shell through the cyclone mechanism, and the stirring mechanism is used to increase the flow rate of the sewage inside the cyclone shell, so that the heavier impurities in the sewage are precipitated to the bottom, and the supernatant in the sewage is discharged from the upper end; through the first dehydrator, the second dehydrator, the third dehydrator, the dehydration motor, the sludge discharge pipe, the sewage return The first dewatering machine, the second dewatering machine and the third dewatering machine are used to dewater the sludge at the bottom of the cyclone shell through the sludge discharge pipe, and the dewatered sludge is discharged through the sludge discharge pipe, and the sewage inside the third dewatering machine enters the second dewatering machine, the sewage inside the second dewatering machine enters the first dewatering machine, and the sewage inside the first dewatering machine is injected into the upper end of the cyclone shell through the sewage return pipe, thereby reducing the discharge of sewage. At the same time, the second water pump is used to transport the sewage in the sewage return pipe; through the membrane filtration mechanism composed of the filter membrane and the filter screen installed at the bottom of the filter cylinder, the filter screen is used to perform coarse filtration on the treated sewage, and the filter membrane is used to perform secondary filtration on the treated sewage, thereby achieving the purpose of purifying the sewage.

[0017] 2. Through the cyclone mechanism composed of a water collecting pipe, a branch pipe, a guide cover, a diverter pipe and a first water pump, a branch pipe is welded between the water collecting pipe and the cyclone shell, so that the sewage inside the water collecting pipe is injected into the cyclone shell through the branch pipe, so that the sewage injected into the cyclone shell rotates. When the sewage rotates, the heavier large particles of impurities move outward due to the centrifugal force, while the lighter water moves inward and moves upward through the guide cover. The diverter pipe and the first water pump installed on the upper end of the guide cover facilitate the supernatant in the cyclone shell to be discharged from the diverter pipe.

[0018] 3. Through the stirring mechanism composed of a reduction motor, a transmission rod, a connecting frame and a swirl plate, the transmission rod fixed to the output shaft of the reduction motor is fixed to the swirl plate through the connecting frame, so that the output shaft of the reduction motor can rotate with the swirl plate, so that the rotating swirl plate stirs the sewage inside the cyclone shell, thereby increasing the rotation rate of the sewage in the cyclone shell and accelerating the precipitation of large particles of impurities in the sewage in the cyclone shell. BRIEF DESCRIPTION OF THE DRAWINGS

[0019] Figure 1 It is a three-dimensional structural diagram of the present invention;

[0020] Figure 2It is a partial cross-sectional structural diagram of the present invention;

[0021] Figure 3 is a cross-sectional structural diagram of a cyclone shell in the present invention;

[0022] Figure 4 It is a structural diagram of the reduction motor, transmission rod, connecting frame and swirl plate in the present invention;

[0023] Figure 5 It is a cross-sectional structural diagram of the filter cartridge in the present invention;

[0024] Figure 6 This is a second cross-sectional structural diagram of the filter cartridge in the present invention.

[0025] Figure numerals: 1. cyclone shell; 2. water inlet pipe; 3. water collecting pipe; 4. branch pipe; 5. guide cover; 6. diversion pipe; 7. first water pump; 8. reduction motor; 9. transmission rod; 10. connecting frame; 11. cyclone plate; 12. first dehydrator; 13. second dehydrator; 14. third dehydrator; 15. dehydration motor; 16. mud discharge pipe; 17. sewage return pipe; 18. second water pump; 19. slag discharge pipe; 20. filter cartridge; 21. filter membrane; 22. filter mesh plate; 23. slag collecting trough; 24. drain pipe. DETAILED DESCRIPTION

[0026] In order to make the purpose, technical solution and advantages of the present invention more clearly understood, the present invention is further described in detail below. It should be understood that the specific embodiments described herein are only used to explain the present invention and are not used to limit the present invention.

[0027] See also Figure 1-6 The present invention provides a technical solution: a water conservancy construction sewage treatment device, comprising: a clarification mechanism, a desludging mechanism and a membrane filtration mechanism; through the sewage treatment equipment composed of the clarification mechanism, the desludging mechanism and the membrane filtration mechanism, the sewage mixed with the coagulant is clarified in the clarification mechanism, and the impurities precipitated at the bottom of the clarification mechanism are dehydrated and deslagging by the desludging mechanism, and the membrane filtration mechanism is used to filter the supernatant, thereby obtaining relatively clean water.

[0028] The clarification mechanism includes a cyclone shell 1, a cyclone mechanism installed on the upper part of the cyclone shell 1, and a stirring mechanism installed at the bottom of the cyclone shell 1. The cyclone shell 1 is provided with three; the clarification mechanism is composed of the cyclone shell 1, the cyclone mechanism installed on the upper part of the cyclone shell 1, and the stirring mechanism installed at the bottom of the cyclone shell 1, so that the sewage can swirl in the cyclone shell 1 through the cyclone mechanism, and the stirring mechanism is used to increase the flow rate of the sewage in the cyclone shell 1, so as to facilitate the precipitation of heavier impurities in the sewage to the bottom and the discharge of the supernatant in the sewage from the upper end.

[0029] The desludging mechanism includes a first dehydrator 12, a second dehydrator 13 and a third dehydrator 14 which are coaxially arranged. A dehydration motor 15 is installed at the end of the first dehydrator 12, and the output shaft of the dehydration motor 15 serves as the power shaft of the first dehydrator 12, the second dehydrator 13 and the third dehydrator 14. A slag discharge pipe 19 installed at the lower end of the three cyclone shells 1 is connected to the first dehydrator 12, the second dehydrator 13 and the third dehydrator 14 in sequence. The sewage discharge end of the third dehydrator 14 is connected to the feed end of the second dehydrator 13, and the sewage discharge end of the second dehydrator 13 is connected to the feed end of the first dehydrator 12. The sewage discharge end of the first dehydrator 12 is connected to the upper end of the cyclone shell 1 through a sewage return pipe 17. A second water pump 18 for sewage transportation is installed on the upper part of the sewage return pipe 17. The first dehydrator 12, the second dehydrator 13 and the third dehydrator 14 are connected to the feed end of the second dehydrator 13. A mud discharge pipe 16 for discharging mud is installed at the upper end of each dewatering machine 14; through the desludging mechanism composed of the first dewatering machine 12, the second dewatering machine 13, the third dewatering machine 14, the dehydration motor 15, the mud discharge pipe 16, the sewage return pipe 17, the second water pump 18 and the slag discharge pipe 19, the first dewatering machine 12, the second dewatering machine 13 and the third dewatering machine 14 are used to dewater the sludge at the bottom of the cyclone shell 1 through the slag discharge pipe 19, and the dewatered sludge is discharged through the mud discharge pipe 16, and the sewage inside the third dewatering machine 14 enters the second dewatering machine 13, the sewage inside the second dewatering machine 13 enters the first dewatering machine 12, and the sewage inside the first dewatering machine 12 is injected into the upper end of the cyclone shell 1 through the sewage return pipe 17, thereby reducing the discharge of sewage, and the second water pump 18 is used to transport the sewage in the sewage return pipe 17.

[0030] The membrane filtration mechanism includes a filter cartridge 20 installed at the water outlet end of the tail cyclone housing 1, a filter screen plate 22 for coarse filtration of sewage is installed at the bottom of the filter cartridge 20, a filter membrane 21 for secondary filtration of sewage is also installed at the bottom of the filter cartridge 20, and the filter membrane 21 is located below the filter screen plate 22, and a drain pipe 24 for drainage is installed at the bottom of the filter cartridge 20. The membrane filtration mechanism composed of the filter membrane 21 and the filter screen plate 22 installed at the bottom of the filter cartridge 20, the filter screen plate 22 is used for coarse filtration of the treated sewage, and the filter membrane 21 is used for secondary filtration of the treated sewage, thereby achieving the purpose of purifying the sewage.

[0031] Specifically, the cyclone mechanism includes a water collecting pipe 3 arranged on the outside of the upper end of the cyclone shell 1, a branch pipe 4 is welded between the water collecting pipe 3 and the cyclone shell 1, a guide cover 5 is welded on the inner surface of the upper end of the cyclone shell 1, a diversion pipe 6 is welded on the upper end of the guide cover 5, a first water pump 7 is installed in the middle of the diversion pipe 6, a water inlet pipe 2 for sewage injection is installed on the side surface of the water collecting pipe 3 at the front end, the water collecting pipe 3 at the middle and tail is connected to the first water pump 7, and the first water pump 7 at the tail is connected to the filter cartridge 20.

[0032] In this embodiment, a cyclone mechanism is formed by a water collecting pipe 3, a branch pipe 4, a flow guide 5, a diverter pipe 6 and a first water pump 7, and a branch pipe 4 is welded between the water collecting pipe 3 and the cyclone shell 1, so that the sewage inside the water collecting pipe 3 is injected into the cyclone shell 1 through the branch pipe 4, so that the sewage injected into the cyclone shell 1 rotates, and when the sewage rotates, the heavier large particles of impurities move outward due to the action of centrifugal force, while the lighter water moves inward and moves upward by the flow guide 5, and the diverter pipe 6 and the first water pump 7 installed on the upper end of the flow guide 5 facilitate the supernatant in the cyclone shell 1 to be discharged from the diverter pipe 6.

[0033] Specifically, the stirring mechanism includes a reduction motor 8 installed at the bottom of the cyclone housing 1, the output shaft of the reduction motor 8 is fixed with a transmission rod 9, and the transmission rod 9 is rotatably installed at the bottom of the cyclone housing 1, a connecting frame 10 is welded to the outer surface of the upper part of the cyclone housing 1, and a cyclone plate 11 is welded to the end of the connecting frame 10. There are eight cyclone plates 11 inside the cyclone housing 1, each cyclone plate 11 is fixed to the transmission rod 9 through three connecting frames 10, and the cyclone plate 11 is an arc-shaped plate-like component.

[0034] In this embodiment, a stirring mechanism consisting of a reduction motor 8, a transmission rod 9, a connecting frame 10 and a swirl plate 11 is provided, and the transmission rod 9 to which the output shaft of the reduction motor 8 is fixed is fixed to the swirl plate 11 through the connecting frame 10, so that the output shaft of the reduction motor 8 is convenient for the swirl plate 11 to rotate, so that the rotating swirl plate 11 stirs the sewage inside the cyclone housing 1, thereby increasing the rotation rate of the sewage in the cyclone housing 1 and accelerating the precipitation of large particle impurities in the sewage in the cyclone housing 1.

[0035] Specifically, the water outlet end of the branch pipe 4 is tangent to the upper portion of the cyclone housing 1 .

[0036] In this embodiment, the sewage discharged from the outlet end of the branch pipe 4 is convenient for rotating flow in the cyclone housing 1 .

[0037] Specifically, an arc-shaped groove is provided on the upper portion of the filter screen plate 22 , and a slag collecting groove 23 is provided in the arc-shaped groove of the filter screen plate 22 .

[0038] In this embodiment, the filter screen plate 22 can increase the upper surface area through the slag collecting groove 23, thereby improving the filtering efficiency.

[0039] Specifically, a slot is formed on the lower surface of the filter screen plate 22 .

[0040] In this embodiment, impurities filtered by the filter membrane 21 are stored in the slots provided on the lower surface of the filter screen plate 22 .

[0041] The working principle and use process of the present invention:

[0042] The above embodiments are only used to illustrate the technical solutions of the present invention, rather than to limit them.

Claims

1. A water conservancy construction sewage treatment device, characterized in that: include: Clarification mechanism, desludging mechanism and membrane filtration mechanism; The clarification mechanism comprises a cyclone housing (1), a cyclone mechanism installed on the upper part of the cyclone housing (1) and a stirring mechanism installed on the bottom of the cyclone housing (1), and the cyclone housing (1) is provided with three; The desludging mechanism comprises a first dehydrator (12), a second dehydrator (13) and a third dehydrator (14) which are coaxially arranged, a dehydration motor (15) being installed at the end of the first dehydrator (12), and the output shaft of the dehydration motor (15) serving as a power shaft of the first dehydrator (12), the second dehydrator (13) and the third dehydrator (14), a slag discharge pipe (19) installed at the lower end of the three cyclone housings (1) being connected to the first dehydrator (12), the second dehydrator (13) and the third dehydrator (14) in sequence, and the third dehydrator (14) being connected to the first dehydrator (12), the second dehydrator (13) and the third dehydrator (14) in sequence. The sewage discharge end of the first dehydrator (14) is connected to the feed end of the second dehydrator (13), the sewage discharge end of the second dehydrator (13) is connected to the feed end of the first dehydrator (12), the sewage discharge end of the first dehydrator (12) is connected to the upper end of the cyclone housing (1) through a sewage return pipe (17), a second water pump (18) for sewage transportation is installed on the upper part of the sewage return pipe (17), and mud discharge pipes (16) for mud discharge are installed on the upper ends of the first dehydrator (12), the second dehydrator (13) and the third dehydrator (14); The membrane filtration mechanism comprises a filter cartridge (20) installed at the water outlet end of the tail cyclone housing (1), a filter screen plate (22) for coarse filtration of sewage installed at the bottom of the filter cartridge (20), a filter membrane (21) for secondary filtration of sewage installed at the bottom of the filter cartridge (20), and the filter membrane (21) is located below the filter screen plate (22), and a drainage pipe (24) for drainage is installed at the bottom of the filter cartridge (20); The cyclone mechanism comprises a water collecting pipe (3) arranged outside the upper end of the cyclone shell (1), a branch pipe (4) welded between the water collecting pipe (3) and the cyclone shell (1), a flow guide cover (5) welded on the inner surface of the upper end of the cyclone shell (1), a flow diversion pipe (6) welded on the upper end of the flow guide cover (5), and a first water pump (7) installed in the middle of the flow diversion pipe (6); A water inlet pipe (2) for sewage injection is installed on the side surface of the water collecting pipe (3) at the front end, the water collecting pipe (3) at the middle and rear ends are connected to the first water pump (7), and the first water pump (7) at the rear end is connected to the filter cartridge (20); The water outlet end of the branch pipe (4) is tangent to the upper part of the cyclone housing (1).

2. A water conservancy construction sewage treatment device according to claim 1, characterized in that: The stirring mechanism comprises a reduction motor (8) mounted at the bottom of a cyclone housing (1); a transmission rod (9) is fixed to an output shaft of the reduction motor (8); and the transmission rod (9) is rotatably mounted at the bottom of the cyclone housing (1); a connecting frame (10) is welded to the outer surface of the upper portion of the cyclone housing (1); and a cyclone plate (11) is welded to the end of the connecting frame (10).

3. A water conservancy construction sewage treatment device according to claim 2, characterized in that: Eight swirl plates (11) are provided inside the cyclone housing (1), each swirl plate (11) is fixed to a transmission rod (9) via three connecting frames (10), and the swirl plates (11) are arc-shaped plate-shaped components.

4. A water conservancy construction sewage treatment device according to claim 1, characterized in that: An arc-shaped groove is provided on the upper portion of the filter screen plate (22), and a slag collecting groove (23) is provided in the arc-shaped groove of the filter screen plate (22).

5. A water conservancy construction sewage treatment device according to claim 1, characterized in that: A slot is provided on the lower surface of the filter screen plate (22).

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