CN212640046U

CN212640046U - Landfill leachate coagulating sedimentation system

Info

Publication number: CN212640046U
Application number: CN202020860800.1U
Authority: CN
Inventors: 王鹏举; 盛技科; 李俊红
Original assignee: Henan Hongpeng Environmental Protection Engineering Co ltd
Current assignee: Henan Hongpeng Environmental Protection Engineering Co ltd
Priority date: 2020-05-20
Filing date: 2020-05-20
Publication date: 2021-03-02
Anticipated expiration: 2030-05-20

Abstract

The utility model relates to a landfill leachate coagulating sedimentation system, which comprises a mixing device, a stirring device and a sedimentation device, wherein the stirring device is arranged between the mixing device and the sedimentation device, and the stirring device is arranged between the mixing device and the sedimentation device and is communicated with the mixing device and the sedimentation device; mixing arrangement includes casing one, and the intercommunication has feed liquor pipe and drain pipe on the casing one, and drain pipe and mixing arrangement intercommunication are provided with on the feed liquor pipe to be used for the pressurizer to mixed liquid, and the feed liquor pipe sets up along the tangential direction of casing one, and agitating unit includes casing three and the stirring structure that is used for the stirring. The utility model discloses have the effect of accelerating filtration efficiency.

Description

Landfill leachate coagulating sedimentation system

Technical Field

The utility model belongs to the technical field of waste water treatment's technique and specifically relates to a landfill leachate coagulating sedimentation system is related to.

Background

The landfill leachate is high-concentration organic wastewater which can be discharged only after being treated to reach the discharge standard, the mixed flocculation precipitation method is a common method for treating the landfill leachate, and the coagulating precipitation method is a method for adding coagulants such as FeCl3 and the like into the leachate, and the coagulants react with soluble substances to generate precipitates which are difficult to dissolve in water or coagulate and adsorb fine suspended matters and colloid impurities in the water. The mixed flocculation precipitation method can reduce the turbidity and the chromaticity of the wastewater, and remove various high molecular substances, organic substances, certain metal ions and eutrophication substances (soluble inorganic substances such as nitrogen, phosphorus and the like). The coagulating sedimentation method can be used as a pretreatment process to reduce the load of a post-treatment facility, can also be used as a post-treatment process and is a key technology for treating percolate.

An integrated device suitable for landfill leachate pretreatment is disclosed in chinese patent with patent publication No. CN210313801U, which comprises: a dosing sedimentation tank, a membrane filtration tank and a sulfuric acid absorption tank; the dosing precipitation is provided with a first water inlet and a first water outlet; the membrane filtering tank is provided with a second water inlet and a second air outlet; the sulfuric acid absorption tank is provided with a third air inlet; the integrated device suitable for landfill leachate preliminary treatment still includes: a first pipeline and a second pipeline; two ends of the first pipeline are respectively communicated with the first water outlet and the second water inlet; two ends of the second pipeline are respectively communicated with the second air outlet and the third air inlet; the dosing sedimentation tank is also provided with an alkali liquor dosing port, a coagulant dosing port, a flocculant dosing port and a sludge discharge port; a filtering membrane and an aeration device are arranged in the membrane filtering tank.

The above prior art solutions have the following drawbacks: landfill leachate mixes with the flocculating agent and deposits after the stirring mixes in the medicine sedimentation tank again, and the deposit in the district that stews can be influenced to the scope of stirring too greatly, and the inhomogeneous situation of stirring can appear in the scope of stirring less, makes filterable efficiency not high.

SUMMERY OF THE UTILITY MODEL

Not enough to prior art exists, one of the purposes of the utility model is to provide a landfill leachate coagulating sedimentation system has set up mixing arrangement, agitating unit and has depositd the device, and it has the effect of accelerating filtration efficiency.

The above object of the present invention is achieved by the following technical solutions: a landfill leachate coagulating sedimentation system comprises a mixing device, a stirring device and a sedimentation device, wherein the stirring device is arranged between the mixing device and the sedimentation device and is communicated with the mixing device and the sedimentation device; mixing arrangement includes casing one, and the intercommunication has feed liquor pipe and drain pipe on the casing one, and drain pipe and mixing arrangement intercommunication are provided with on the feed liquor pipe and are used for the pressure device to mixed liquid pressurization, and the feed liquor pipe sets up along the tangential direction of casing one, and agitating unit includes casing two, is provided with the stirring structure that is used for the stirring in the casing two.

Through adopting above-mentioned technical scheme, mixing arrangement is used for making medicament and liquid preliminary mixing, mixed liquid can condense into little alum blossom in mixing arrangement, agitating unit is used for stirring mixed liquid, the reaction of medicament and liquid accelerates, make little alum blossom gather into big alum blossom, precipitation device is used for making mixed liquid deposit, heavier alum blossom sinks in the bottom of precipitation device, the clear liquid discharge on upper strata, the liquid pressurization in the feed liquor pipe is sent into casing one in, the tangential direction setting of feed liquor pipe along casing one, make liquid enter into casing one along the tangential direction of casing one in, make liquid can descend the mixture at casing one internal screw.

The present invention may be further configured in a preferred embodiment as: the liquid outlet pipe is provided with a horizontal pipe, and the inner side wall of the horizontal pipe is fixedly provided with a spiral sheet.

By adopting the technical scheme, when the liquid flows out from the liquid outlet pipeline, the spiral piece and the horizontal pipe are arranged to prolong the flow path of the liquid, and the mixing efficiency is accelerated.

The present invention may be further configured in a preferred embodiment as: the sedimentation device comprises a plurality of third shells and a suction device arranged in the second shells, the suction device is used for sending mixed water in the second shells into the third shells, a water inlet pipeline and a water outlet pipeline are arranged on the third shells, the suction device is communicated with the water inlet pipeline, and a sewage discharge pipeline is further arranged on the third shells.

By adopting the technical scheme, the mixed solution enters the third shell for precipitation after being stirred.

The present invention may be further configured in a preferred embodiment as: and a conical part is arranged at the bottom of the shell III.

By adopting the technical scheme, the precipitated alum floc can be conveniently collected to form sludge.

The present invention may be further configured in a preferred embodiment as: the water inlet pipeline and the sewage discharge pipeline are both arranged on the conical part, and the water outlet pipeline is arranged at the position, close to the top, of the shell III.

By adopting the technical scheme, the mixed liquid is introduced into the shell III from the bottom of the shell III, the liquid level in the shell III rises along with the introduction of the mixed liquid, the large alum floc is precipitated towards the bottom direction of the shell under the action of gravity, and clear water at the upper part of the liquid flows out from the liquid outlet pipeline.

The present invention may be further configured in a preferred embodiment as: and a sludge pumping device for pumping out the sludge in the shell III is arranged on the sewage discharge pipeline.

Through adopting above-mentioned technical scheme, use and take out mud device and can take out the mud that deposits in the toper portion.

The present invention may be further configured in a preferred embodiment as: the liquid inlet pipe is communicated with a dosing pipe.

By adopting the technical scheme, the medicine adding pipe is used for adding the flocculation mixing agent before liquid enters the shell.

The present invention may be further configured in a preferred embodiment as: the dosing pipe is obliquely arranged on the liquid inlet pipe, and the liquid outlet direction of the dosing pipe and the liquid outlet direction of the liquid inlet pipe form an acute angle.

By adopting the technical scheme, the contact area between the flocculating agent in the dosing pipe and liquid in the liquid inlet pipe when entering the liquid inlet pipe is increased.

To sum up, the utility model discloses a following at least one useful technological effect:

1. the mixing device is used for primarily mixing the medicament and the liquid, the mixed liquid can be coagulated into small alum flocs in the mixing device, the stirring device is used for stirring the mixed liquid, the reaction of the medicament and the liquid is accelerated, the small alum flocs are aggregated into large alum flocs, the settling device is used for settling the mixed liquid, the heavier alum flocs are settled at the bottom of the settling device, supernatant liquid on the upper layer is discharged, the liquid in the liquid inlet pipe is pressurized and sent into the first shell, the liquid inlet pipe is arranged along the tangential direction of the first shell, the liquid enters the first shell along the tangential direction of the first shell, and the liquid can spirally descend and be mixed in the first shell;

2. when the liquid flows out from the liquid outlet pipeline, the arrangement of the spiral piece and the horizontal pipe prolongs the flow path of the liquid and accelerates the mixing efficiency.

Drawings

Fig. 1 is a plan view of the present invention.

Fig. 2 is a partially enlarged schematic view of a portion a in fig. 1.

Fig. 3 is a schematic cross-sectional view showing the inside of the second housing.

Fig. 4 is a partially enlarged schematic view of a portion B in fig. 3.

Fig. 5 is a schematic view of the structure of the precipitation apparatus.

Reference numerals: 1. a stirring device; 2. a first shell; 20. a liquid inlet pipe; 21. a liquid outlet pipe; 210. a horizontal tube; 211. a spiral sheet; 22. a medicine feeding pipe; 3. a second shell; 4. a stirring structure; 40. a stirring frame; 41. a drive member; 5. a precipitation device; 50. a third shell; 500. a water inlet pipeline; 501. a water outlet pipeline; 502. a blowdown line; 503. a mud pumping device; 51. a suction device; 510. a water inlet; 511. a water outlet; 52. a tapered portion.

Detailed Description

The present invention will be described in further detail with reference to the accompanying drawings.

Example (b): a landfill leachate coagulating sedimentation system is shown in figure 1 and comprises a mixing device, a stirring device 1 and a sedimentation device 5, wherein the stirring device 1 is arranged between the mixing device and the sedimentation device 5, and the stirring device 1 is arranged between the mixing device and the sedimentation device 5 and is communicated with the mixing device and the sedimentation device 5. Mixing arrangement is used for making medicament and liquid preliminary mixing, and the mixed liquor can condense into little alum blossom in mixing arrangement, and agitating unit 1 is used for stirring the mixed liquor, accelerates the reaction of medicament and liquid, makes little alum blossom aggregate into big alum blossom, and sediment device 5 is used for making the mixed liquor deposit, and heavier alum blossom is heavy to sink in sediment device 5's bottom, and the supernatant liquid of upper strata is discharged.

As shown in fig. 1 and 3, mixing arrangement includes casing one 2, agitating unit 1 includes casing two 3, casing one 2 fixed mounting is in casing two 3, the intercommunication has feed liquor pipe 20 and drain pipe 21 on casing one 2, the intercommunication has dosing pipe 22 on the feed liquor pipe 20, dosing pipe 22 inclines on feed liquor pipe 20 to set up, dosing pipe 22's play liquid direction is the acute angle with feed liquor pipe 20's play liquid direction, increased the contact area with liquid in feed liquor pipe 20 when the muddy wadding agent in the dosing pipe 22 gets into in feed liquor pipe 20, drain pipe 21 and mixing arrangement intercommunication.

The liquid inlet pipe 20 is provided with a pressurizing device for pressurizing the mixed liquid, the pressurizing device is a water pump (not shown in the figure), the water pump pressurizes the liquid in the liquid inlet pipe 20 and sends the liquid into the first shell 2, the liquid inlet pipe 20 is arranged along the tangential direction of the first shell 2, the liquid enters the first shell 2 along the tangential direction of the first shell 2, and the liquid can spirally descend in the first shell 2. The flocculating agent is added with water to prepare liquid medicine, then enters the liquid inlet pipe from the liquid medicine adding pipe 22, enters the shell I2 together with the pressurized liquid, spirally descends in the shell I2, and is preliminarily mixed. Horizontal pipe 210 is arranged on liquid outlet pipe 21, as shown in fig. 4, spiral piece 211 is fixedly arranged on the inner side wall of horizontal pipe 210, and when the mixed liquid flows out from liquid outlet pipe 21, the arrangement of spiral piece 211 and horizontal pipe 210 prolongs the flow path of the liquid, and accelerates the mixing efficiency.

As shown in fig. 2, the stirring apparatus 1 further includes a stirring structure 4, the stirring structure 4 includes a plurality of stirring frames 40 and a driving member 41 for driving the stirring frames 40 to rotate, the stirring frames 40 are installed on the inner side wall of the second housing 3, and the stirring frames 40 are rotatably connected with the second housing 3. The driving part 41 is arranged as a motor, the motor is arranged on the outer side wall of the second shell 3, the stirring frame 40 extends out of the second shell 3 and is coaxially fixed with the motor, the stirring frame 40 of the embodiment is arranged into two, the stirring directions between the two stirring frames 40 are opposite, and the stirring effect is enhanced.

As shown in fig. 1 and 2, the sedimentation device 5 comprises a plurality of shells three 50 and a suction device 51 disposed in the shell two 3, the suction device 51 is used for sending the mixed water in the shell two 3 into the shell three 50, the suction device 51 is configured as a water pump, the water pump is provided with a water inlet 510 and a water outlet 511, the shell three 50 is provided with a water inlet pipeline 500 and a water outlet pipeline 501, the water inlet pipeline 500 is communicated with the water outlet 511 of the water pump, as shown in fig. 5, the bottom of the shell three 50 is provided with a tapered part 52 for collecting precipitated alum blossom to form sludge, the water inlet pipeline 500 is disposed on the tapered part 52, the water outlet pipeline 501 is disposed at a position close to the top of the shell three 50, the mixed liquid is introduced into the shell three 50 from the bottom of the shell three 50, the liquid level in the shell three 50 rises along with the introduction of the mixed liquid, and the alum blossom is precipitated towards the, clear water at the upper part of the liquid flows out from the liquid outlet pipe 21.

A sewage pipeline 502 is arranged on the third shell 50, the sewage pipeline 502 is also arranged on the conical part 52, a mud pumping device 503 is arranged on the sewage pipeline 502, the mud pumping device 503 is arranged as a mud pumping pump, the mud pumping pump is arranged on the sewage pipeline 502, and the mud pumping device 503 is used for pumping out sediments precipitated by the conical part 52.

The implementation principle of the embodiment is as follows: liquid in the feed liquor pipe 20 is after mixing into the muddy wadding agent that adds from dosing tube 22, enter into casing 2 along the tangential direction of casing 2 in, the mixed liquid descends at casing 2 internal screw, discharge to casing two 3 from horizontal pipe 210, stirring frame 40 stirs the mixed liquid, the mixed liquid in casing two 3 is taken out to the suction pump and is sent to in casing three 50 and deposit, the liquid level in casing three 50 rises along with the letting in of mixed liquid, big alum blossom is deposited to the bottom direction of casing because of the effect of gravity, clear water on liquid upper portion is from drain pipe 21 way outflow, use the mud pump can take out the mud that deposits in toper portion 52.

The embodiment of this specific implementation mode is the preferred embodiment of the present invention, not limit according to this the utility model discloses a protection scope, so: all equivalent changes made according to the structure, shape and principle of the utility model are covered within the protection scope of the utility model.

Claims

1. The utility model provides a landfill leachate coagulating sedimentation system which characterized in that: the device comprises a mixing device, a stirring device (1) and a precipitation device (5), wherein the stirring device (1) is arranged between the mixing device and the precipitation device (5), and the stirring device (1) is communicated with the mixing device and the precipitation device (5); mixing arrangement includes casing (2), and the intercommunication has feed liquor pipe (20) and drain pipe (21) on casing (2), and drain pipe (21) and mixing arrangement intercommunication are provided with on feed liquor pipe (20) and are used for mixing the pressurized pressure device of liquid, and the tangential direction setting of casing (2) is followed in feed liquor pipe (20), and agitating unit (1) includes casing two (3), is provided with in casing two (3) to be used for the stirring to construct (4).

2. The landfill leachate coagulating sedimentation system of claim 1, wherein: be provided with horizontal pipe (210) on drain pipe (21), the inside wall fixed mounting of horizontal pipe (210) has flight (211).

3. The landfill leachate coagulating sedimentation system according to claim 1, wherein the sedimentation device (5) comprises a plurality of third shells (50) and a suction device (51) arranged in the second shell (3), the suction device (51) is used for feeding the mixed water in the second shell (3) into the third shells (50), the third shells (50) are provided with water inlet pipes (500) and water outlet pipes (501), the suction device (51) is communicated with the water inlet pipes (500), and the third shells (50) are further provided with sewage discharge pipes (502).

4. Landfill leachate coagulating sedimentation system according to claim 3, characterized in that the bottom of the housing three (50) is provided with a cone (52).

5. The landfill leachate coagulating sedimentation system according to claim 4, wherein the water inlet pipe (500) and the sewage pipe (502) are both provided on the tapered part (52), and the water outlet pipe (501) is provided at a position near the top of the housing III (50).

6. The landfill leachate coagulating sedimentation system according to claim 4, wherein the sewage discharge pipe (502) is provided with a sludge pumping device (503) for pumping out sludge in the third casing (50).

7. The landfill leachate coagulating sedimentation system according to claim 1, wherein the liquid inlet pipe (20) is communicated with a dosing pipe (22).

8. The landfill leachate coagulating sedimentation system according to claim 7, wherein the dosing pipe (22) is disposed obliquely on the liquid inlet pipe (20), and the liquid outlet direction of the dosing pipe (22) and the liquid outlet direction of the liquid inlet pipe (20) form an acute angle.