CN214115143U - Advanced wastewater treatment device - Google Patents
Advanced wastewater treatment device Download PDFInfo
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- CN214115143U CN214115143U CN202022220816.9U CN202022220816U CN214115143U CN 214115143 U CN214115143 U CN 214115143U CN 202022220816 U CN202022220816 U CN 202022220816U CN 214115143 U CN214115143 U CN 214115143U
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Abstract
The utility model discloses a wastewater advanced treatment device, wherein a water inlet pipeline is connected with a pipeline mixer, and an outlet pipeline of the pipeline mixer is connected to a pre-reaction system; the pre-reaction system comprises a mixing zone, and the mixing zone is communicated with the reaction zone; the reaction zone is communicated with the condensation zone; the coagulation area is communicated with the flocculation reactor; the flocculation reactor is a cylindrical reactor and is provided with a wastewater inlet pipeline; the middle upper part in the reactor is provided with a first bell mouth, the lower part is provided with a second bell mouth, and the first bell mouth is connected with a tubular microfiltration device outside the reactor; a reflecting plate is arranged below the second bell mouth; a sludge settling plate and a sludge baffle plate are arranged between the two bell mouths, and the sludge baffle plate is lower than the sludge settling plate; the middle lower part of the reactor is provided with a distribution pipe which is communicated with a central pipe, and the central pipe is connected with a water inlet of the tubular microfiltration device; the bottom of the reactor is conical, and the conical bottom is connected with a sludge pipeline. The device has high intensive procedure, high reaction efficiency and occupied area saving.
Description
Technical Field
The invention belongs to the technical field of water treatment, and particularly relates to a treatment device for high-concentration organic wastewater such as coking, chemical engineering, papermaking and the like.
Background
Industrial waste water, especially organic waste water produced in the coking or gas making process of coke-oven plant, still contains organic matter with certain concentration and difficult to reduce after biochemical treatment.
The national environmental protection ministry of "emission Standard for pollution of coking chemical industry" (GB 16171-2012) has more strict requirements on wastewater emission, the quality of discharged water reaches less than or equal to 50mg/l of suspended matters, COD is less than or equal to 80mg/l, and cyanide is less than or equal to 0.2 mg/l. The prior advanced treatment technology comprises a coagulating sedimentation method and an advanced oxidation method, wherein the coagulating sedimentation method is usually added with coagulant polymeric ferric sulfate, polymeric aluminum chloride and polyacrylamide, and the advanced oxidation method is usually added with Fenton, an ozone oxidation method and an electrocatalytic oxidation method.
The coking wastewater has complex components, high organic matter content and high content of polycyclic aromatic hydrocarbon and macromolecular substances, and even after biochemical treatment, long-chain and persistent organic matters in the coking wastewater reach the discharge standard and still possibly cause harm to the environment. The conventional coking wastewater is subjected to biochemical treatment, and biochemical effluent is further subjected to advanced treatment and discharged or recycled.
In order to remove pollutants such as organic matters, cyanides, fluoride ions and the like, the wastewater passes through a process section of a cyanogen removal reaction tank, a fluorine removal reaction tank, a flocculation tank and a sedimentation tank, and the process has long flow and large floor area. And the existing treatment degree is not high, and the quality of the discharged water is unstable. An efficient flocculation reactor is urgently needed to be developed, reaction, large-flux circulation and sedimentation and clarification integrated equipment is needed, and intensive and intelligent development of water treatment equipment is promoted.
SUMMERY OF THE UTILITY MODEL
Therefore, the to-be-solved technical problem of the utility model is to provide a waste water advanced treatment device, improve the treatment level of waste water especially coking waste water, reach better emission index.
The technical proposal of the utility model is that the advanced wastewater treatment device comprises a pre-reaction system, a flocculation reactor and a tubular microfiltration device;
the water inlet pipeline is connected with a pipeline mixer, and an outlet pipeline of the pipeline mixer is connected into the pre-reaction system;
the pre-reaction system comprises a mixing zone, and the bottom of the mixing zone is communicated with the reaction zone; the reaction zone is communicated with the condensation zone; the coagulation area is communicated with the flocculation reactor;
the flocculation reactor is a cylindrical reactor and is provided with a wastewater inlet pipeline; the middle upper part in the reactor is provided with a first bell mouth, and the first bell mouth is connected with a tubular microfiltration device outside the flocculation reactor; a second bell mouth is arranged below the first bell mouth, and a reflecting plate matched with the second bell mouth in shape is arranged below the second bell mouth;
a sludge settling plate and a sludge baffle plate are arranged between the first bell mouth and the second bell mouth of the inner wall of the flocculation reactor, and the sludge baffle plate is lower than the sludge settling plate; the middle lower part of the flocculation reactor is provided with a distribution pipe which is communicated with a central pipe, and the central pipe is connected with a water inlet of the tubular microfiltration device;
the bottom of the flocculation reactor is conical, and the bottom is connected with a sludge pipeline.
According to a wastewater advanced treatment device, the pre-reaction system is preferably positioned at the top of the flocculation reactor.
According to an advanced wastewater treatment device, the coagulation area is preferably communicated with the second bell mouth.
According to an advanced wastewater treatment device, the distance between the second bell mouth and the reflecting plate is preferably smaller than the distance between the first bell mouth and the second bell mouth.
According to a wastewater advanced treatment device, preferably, one end of the central pipe is connected with an internal circulating pump and then is connected with a water inlet of the tubular microfiltration device. A first flowmeter is arranged on the connecting pipeline.
According to the advanced wastewater treatment device, the water outlet of the tubular microfiltration device is preferably connected with the first bell mouth.
According to the advanced wastewater treatment device, a sludge pump is preferably arranged on the sludge pipeline at the conical bottom; the sludge pipeline is communicated with the high-pressure water, and a first valve is arranged on the sludge pipeline.
According to an advanced wastewater treatment device, the sludge pump is preferably connected to the second valve and the third flow meter.
The sludge pump outlet sludge pipeline is divided into two paths: one path is communicated with a wastewater pipeline of the second flowmeter and is mixed with incoming wastewater, and the other path is a branch of a sludge discharge pipeline and is connected with the second valve and the third flowmeter.
Preferably, the tubular microfiltration device is connected with a tubular microfiltration water production pipe.
Preferably, a liquid level meter is arranged in the flocculation reactor.
The utility model has the advantages that:
(1) the medicament stirring reaction device is arranged at the top, the device has high intensive procedures and saves the occupied area.
(2) The internal circulation volume of the flocculation reactor is large, pollutants and medicaments are fully reacted, and the reactor is intensive and efficient.
(3) The reactor is combined with tubular microfiltration, the integration degree is high, the area requirement of the tubular microfiltration reaction tank is reduced, and the civil engineering requirement of the tubular microfiltration reaction tank is lowered.
(4) The water outlet of the condensation zone is provided with a pipeline which flows into the reactor through gravity, and the pipeline flows into the reactor and is internally provided with a bell mouth and a reflecting plate which are uniformly distributed to feed water to disturb the turbulent flow of the bottom sludge, thereby ensuring the uniform mixing of the waste water.
(5) The high-efficiency flocculation reactor is internally provided with a sludge inclined plate and a sludge baffle, and can settle sludge generated at the upper part to the lower part of the reactor along the inclined plate and the baffle.
(6) High degree of depth mud accessible bypass of high-efficient flocculation reactor bottom is discharged to sludge thickening tank, and the bypass sets up valve and flowmeter, realizes that the mud volume of discharging and production mud volume realize balancing.
(7) The sludge pipeline at the bottom of the flocculation reactor device is easy to block, a high-pressure industrial water pipeline can be added, and the sludge pipeline at the bottom of the reactor and the sludge pump inlet pipeline are washed.
(8) The high-efficiency reactor liquid level meter is linked with the front device and the rear device, and stable operation of front and rear processes can be realized.
Drawings
Fig. 1 is a schematic structural diagram of the present invention.
In the figure, 1, a water inlet pipeline; 2. a pipeline mixer; 3. a mixing zone; 4. a reaction zone; 5. a condensation zone; 6. a liquid level meter; 7. a distribution pipe; 8. a first flow meter; 9. a tubular microfiltration device; 10. tubular microfiltration produces the water pipe; 11. a first bell mouth; 12. a sludge settling plate; 13. a second bell mouth; 14. a reflective plate; 15. a sludge baffle; 16. high-pressure water; 17. a first valve; 18. a second flow meter; 19. a second valve; 20. a third flow meter; 21. a central tube; a P-01 circulating pump; p-02 sludge pump.
Detailed Description
As shown in figure 1, the advanced wastewater treatment device of the utility model comprises a pre-reaction system, a flocculation reactor and a tubular microfiltration device; the sludge pipe and the related pipelines at the bottom of the flocculation reactor form a sludge system.
The water inlet pipeline 1 is connected with the pipeline mixer 2, and the outlet pipeline of the pipeline mixer 2 is connected into the pre-reaction system;
the pre-reaction system is positioned at the upper part of the flocculation reactor. The pre-reaction system comprises a mixing zone 3, and the bottom of the mixing zone 3 is communicated with a reaction zone 4; the reaction zone 4 is communicated with the coagulation zone 5; the coagulation area 5 is communicated with the flocculation reactor;
the flocculation reactor is a cylindrical reactor and is provided with a wastewater inlet pipeline; a first bell mouth 11 is arranged at the middle upper part in the reactor, and the first bell mouth 11 is connected with a tubular microfiltration device 9 outside the reactor; a second bell mouth 13 is arranged below the first bell mouth 11, and a reflecting plate 14 matched with the second bell mouth 13 in shape is arranged below the second bell mouth 13;
a sludge settling plate 12 and a sludge baffle plate 15 are arranged between the first bell mouth 11 and the second bell mouth 13 on the inner wall of the flocculation reactor, and the sludge baffle plate 15 is slightly lower than the sludge settling plate 12; the middle lower part of the reactor is provided with a distribution pipe 7, the distribution pipe 7 is communicated with a central pipe 21, and the central pipe 21 is connected with a water inlet of the tubular microfiltration device 9; the bottom of the reactor is conical, and the conical bottom is connected with a sludge pipeline. The water inlet pipeline 1 is connected with a sludge pump P-02.
In the water inlet process, the wastewater is mixed with the return sludge, and the wastewater is fully mixed with the return sludge through the water inlet pipeline 1 and the pipeline mixer 2 and then flows into the pre-reaction system. The pre-reaction system is positioned at the top of the flocculation reactor, is square and is divided into three parts. The waste water enters a mixing zone 3 of a stirring and mixing reactor after passing through a pipeline mixer, a flocculating agent, a cyanogen removing agent and a fluorine removing agent are added to the outside of the mixing zone 3, the flocculating agent, the cyanogen removing agent and the fluorine removing agent are effectively mixed with the waste water, and then the waste water enters a reaction zone 4 from the bottom of the mixing zone 3. In the reaction zone 4, the chemicals and the wastewater are fully reacted under the action of a stirrer, and the fully reacted mixed liquor enters a coagulation zone 5. In the coagulation zone 5, the mixed liquor flows into the flocculation reactor through a bottom pipeline in the coagulation zone 5. The wastewater enters the second bell mouth 13 of the reactor through a sedimentation pipe in the reactor, and the wastewater is uniformly dispersed in the reactor under the action of the reflecting plate 14 below the second bell mouth 13.
A reflecting plate 14 is arranged below the second bell mouth 13 to uniformly disperse the mixed liquid into the reactor.
The middle part of the flocculation reactor is provided with a sludge settling plate 12 and a sludge baffle 15, and the sludge baffle 15 is arranged at the inner side of the sludge settling plate 12 and is slightly lower than the sludge settling plate 12. The reactor settled sludge can enter the sludge concentration zone at the conical bottom of the lower part of the flocculation reactor along the sludge baffle 15.
A bottom central tube 21 is arranged above the cone at the bottom of the reactor, and the bottom central tube 21 is communicated with the distribution tube 7.
The bottom cone bottom of the flocculation reactor is provided with a sludge pipeline, and bottom sludge enters a sludge pump P-02 along the pipeline. The inlet of the sludge pump is provided with high-pressure water, and the high-pressure water 16 can be used for backflushing when the pump and the flocculation reactor are blocked by sludge at the conical bottom; the cone bottom sludge pipeline is provided with a first valve 17, so that high-pressure water backflushing switching is facilitated.
The sludge pump outlet sludge pipeline is divided into two paths: one path is communicated with a waste water pipeline of the second flowmeter 18 and is mixed with incoming waste water, and the other path is a branch of a sludge discharge pipeline and is connected with a second valve 19 and a third flowmeter 20.
The tubular microfiltration system comprises a tubular microfiltration device 9, a tubular microfiltration membrane and a tubular microfiltration water production pipe 10. The mixed liquid carries waste water and flocculating agent, flows into a circulating pump P-01 from a bottom distributing pipe 7 in the flocculation reactor, controls the flow under the lifting of the pump, and produces water penetrating through the tubular microfiltration membrane to a tubular microfiltration water production pipe 10. The circulating liquid returns to the upper end of the flocculation reactor through a water outlet pipeline of the tubular microfiltration device and is injected into the reactor through a first bell mouth 11.
The liquid level meter 6 is interlocked with the starting and stopping of the tubular circulating pump P-01, and is started at the high liquid level and stopped at the low liquid level of the liquid level meter. The liquid level meter 6 is interlocked with a wastewater incoming water pump, the liquid level pump stops at the high level of the liquid level meter, and the liquid level pump starts at the low level of the liquid level meter.
Claims (10)
1. The advanced wastewater treatment device is characterized in that: comprises a pre-reaction system, a flocculation reactor and a tubular microfiltration device;
the water inlet pipeline (1) is connected with the pipeline mixer (2), and the outlet pipeline of the pipeline mixer (2) is connected into the pre-reaction system;
the pre-reaction system comprises a mixing zone (3), and the bottom of the mixing zone (3) is communicated with a reaction zone (4); the reaction zone (4) is communicated with the coagulation zone (5); the coagulation zone (5) is communicated with the flocculation reactor;
the flocculation reactor is a cylindrical reactor and is provided with a wastewater inlet pipeline; a first bell mouth (11) is arranged at the middle upper part in the reactor, and the first bell mouth (11) is connected with a tubular microfiltration device (9) outside the flocculation reactor; a second bell mouth (13) is arranged below the first bell mouth (11), and a reflecting plate (14) matched with the second bell mouth (13) in shape is arranged below the second bell mouth (13);
a sludge settling plate (12) and a sludge baffle plate (15) are arranged between the first bell mouth (11) and the second bell mouth (13) on the inner wall of the flocculation reactor, and the sludge baffle plate (15) is lower than the sludge settling plate (12); the middle lower part of the flocculation reactor is provided with a distribution pipe (7), the distribution pipe (7) is communicated with a central pipe (21), and the central pipe (21) is connected with a water inlet of the tubular microfiltration device (9);
the bottom of the flocculation reactor is conical, and the bottom is connected with a sludge pipeline.
2. The advanced wastewater treatment plant according to claim 1, characterized in that: the pre-reaction system is positioned at the top of the flocculation reactor.
3. The advanced wastewater treatment plant according to claim 1, characterized in that: the condensation area (5) is communicated with the second bell mouth (13).
4. The advanced wastewater treatment plant according to claim 1, characterized in that: the distance between the second bell mouth (13) and the reflecting plate (14) is smaller than the distance between the first bell mouth (11) and the second bell mouth (13).
5. The advanced wastewater treatment plant according to claim 1, characterized in that: one end of the central pipe (21) is connected with an internal circulating pump (P-01) and then is connected with a water inlet of the tubular microfiltration device (9).
6. The advanced wastewater treatment plant according to claim 1, characterized in that: the water outlet of the tubular microfiltration device (9) is connected with the first bell mouth (11).
7. The advanced wastewater treatment plant according to claim 1, characterized in that: a sludge pump (P-02) is arranged on the sludge pipeline at the conical bottom; the sludge pipeline is communicated with the high-pressure water (16), and a first valve (17) is arranged on the sludge pipeline.
8. The advanced wastewater treatment plant according to claim 7, characterized in that: the sludge pump (P-02) is connected with the second valve (19) and the third flowmeter (20).
9. The advanced wastewater treatment plant according to claim 1, characterized in that: the tubular microfiltration device (9) is connected with a tubular microfiltration water production pipe (10).
10. The advanced wastewater treatment plant according to claim 1, characterized in that: a liquid level meter (6) is arranged in the flocculation reactor.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202022220816.9U CN214115143U (en) | 2020-09-30 | 2020-09-30 | Advanced wastewater treatment device |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202022220816.9U CN214115143U (en) | 2020-09-30 | 2020-09-30 | Advanced wastewater treatment device |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN214115143U true CN214115143U (en) | 2021-09-03 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202022220816.9U Active CN214115143U (en) | 2020-09-30 | 2020-09-30 | Advanced wastewater treatment device |
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| Country | Link |
|---|---|
| CN (1) | CN214115143U (en) |
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- 2020-09-30 CN CN202022220816.9U patent/CN214115143U/en active Active
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