CN210065277U - Multi-effect static mixing and stirring reaction device and system for sewage treatment - Google Patents
Multi-effect static mixing and stirring reaction device and system for sewage treatment Download PDFInfo
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- CN210065277U CN210065277U CN201920344743.9U CN201920344743U CN210065277U CN 210065277 U CN210065277 U CN 210065277U CN 201920344743 U CN201920344743 U CN 201920344743U CN 210065277 U CN210065277 U CN 210065277U
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Abstract
The utility model relates to a multi-effect static mixing and stirring reaction device for sewage treatment, which relates to the technical field of sewage treatment and comprises a vertical mixer, a sludge return pipe, a compressed air pipe and a feeding pipeline; the vertical mixer comprises a vertical mixer body and a mixing chamber, wherein a baffling wall is arranged on the inner wall of the vertical mixer body and/or a stirrer is arranged in the mixing chamber; the sludge return pipe is vertically arranged on the support frame and is positioned in the vertical mixer or outside the vertical mixer; the upper end of the sludge return pipe is provided with a sludge outlet or a sludge outlet pipe communicated with the mixing chamber; the compressed air pipe is connected to the lower part of the sludge return pipe from the inside or the outside; the feeding pipeline comprises a raw water pipeline and a dosing pipeline which are communicated with the mixing chamber; the system comprises the following steps: a plurality of the devices are connected in parallel to the main medicine feeding pipe and the main compressed air pipe through a plurality of branch pipelines. The device and the system have the characteristics of multi-effect mixing, small dosage, good mixing effect and good effluent quality.
Description
Technical Field
The utility model relates to the technical field of sewage treatment, in particular to a multi-effect static mixing and stirring reaction device for sewage treatment; the utility model discloses still relate to the static mixing stirring reaction system of multiple-effect who forms by aforementioned sewage treatment uses the static mixing stirring reaction unit of multiple-effect.
Background
At present, a mixing reaction flocculation device is generally required to be added in front of a physicochemical sedimentation tank for water treatment, and various methods for mixing reaction are available, such as water pump mixing, pipeline mixing, static vertical mixers, mechanical stirring mixing and the like, for example, a Chinese patent publication with publication number CN203999081U discloses a stirring coagulation device for sewage treatment, which comprises a stirring tank, wherein a guide cylinder with a mixing cavity and a rapid stirring assembly positioned in the mixing cavity are arranged in the stirring tank, a water inlet pipe and a medicine feeding pipe which are communicated with the mixing cavity are arranged at the upper part of the guide cylinder, the bottom of the mixing cavity is communicated with an inner cavity of the stirring tank, and a slow stirring assembly positioned below the guide cylinder is also arranged in the stirring tank. The device has the defects that an additional power mechanism is needed, the mixing cost is increased, and the mixing effect is single. These vertical mixers generally mix raw water and chemicals only, and do not mix precipitated sludge in a sedimentation tank, so that the amount of chemicals added increases, the cost of sewage treatment increases, and the mixing effect is not good enough.
Disclosure of Invention
The to-be-solved technical problem of the utility model lies in providing a sewage treatment is with static mixing stirring reaction unit of multiple-effect that multiple-effect mixes, the dosage is few, the mixing effect is good, play water quality of water is good to the not enough of prior art.
The second technical problem to be solved by the utility model is to provide a multiple-effect static mixing stirring reaction system that comprises above-mentioned sewage treatment is with static mixing stirring reaction unit of multiple-effect.
The utility model aims to solve the technical problem that the technical scheme is realized, and the utility model relates to a multi-effect static mixing and stirring reaction device for sewage treatment, which is characterized by comprising a vertical mixer, a sludge return pipe, a compressed air pipe and a feeding pipeline;
the vertical mixer comprises a vertical mixer body and a mixing chamber, wherein a baffling wall is arranged on the inner wall of the vertical mixer body and/or a stirrer is arranged in the mixing chamber; the vertical mixer is fixedly arranged on the support frame;
the sludge return pipe is vertically arranged on the support frame and is positioned in the vertical mixer or outside the vertical mixer; the upper end of the sludge return pipe is provided with a sludge outlet or a sludge outlet pipe communicated with the mixing chamber;
the compressed air pipe is introduced into the lower part of the sludge return pipe from the sludge return pipe or is introduced into the lower part of the sludge return pipe from the outside of the sludge return pipe;
the feeding pipeline comprises a raw water pipeline and a dosing pipeline which are communicated with the mixing chamber.
The to-be-solved technical problem of the utility model can also be further realized through following technical scheme, above sewage treatment in with static mixing stirring reaction unit of multiple-effect: the baffling wall is a plurality of inward-convex baffling parts arranged on the inner wall of the vertical mixer.
The to-be-solved technical problem of the utility model can also be further realized through following technical scheme, above sewage treatment in with static mixing stirring reaction unit of multiple-effect: the stirrer is a gas stirrer or a solid stirrer;
the gas stirrer comprises a compressed air branch pipe which is introduced into the bottom of the mixing chamber, and a gas distributor is arranged at the lower part of the compressed air branch pipe;
the solid stirrer is a tubular stirrer or a blade stirrer.
The to-be-solved technical problem of the utility model can also be further realized through following technical scheme, above sewage treatment in with static mixing stirring reaction unit of multiple-effect: the tubular stirrer is a stirring pipe arranged in the mixing chamber, or is formed by arranging a sludge return pipe and a stirrer in a combined manner, the stirring pipe or the sludge return pipe is arranged in the vertical mixer and is coaxial with the vertical mixer, and a plurality of stirring parts protruding outwards are arranged on the outer wall of the stirring pipe or the sludge return pipe;
the blade type stirrer comprises a stirring shaft which is arranged in the mixing chamber and is coaxial with the vertical mixer, and stirring blades are arranged on the stirring shaft; the stirring shaft is fixedly connected to the support frame.
The to-be-solved technical problem of the utility model can also be further realized through following technical scheme, above sewage treatment in with static mixing stirring reaction unit of multiple-effect: the stirring blade is a flat blade or a spiral blade; the flat plate blades are a plurality of circular blades which are fixedly connected to the stirring shaft at uniform intervals from top to bottom, and the circular blades are arranged in a manner that the circle center falls on the axis of the stirring shaft; the helical blades are spirally wound on the stirring shaft from top to bottom along the stirring shaft.
The to-be-solved technical problem of the utility model can also be further realized through following technical scheme, above sewage treatment in with static mixing stirring reaction unit of multiple-effect: the sludge return pipe or the stirring shaft is connected to the support frame through the lifting mechanism.
The to-be-solved technical problem of the utility model can also be further realized through following technical scheme, above sewage treatment in with static mixing stirring reaction unit of multiple-effect: the lifting mechanism comprises a threaded guide sleeve and a screw matched with the threaded guide sleeve.
The to-be-solved technical problem of the utility model can also be further realized through following technical scheme, above sewage treatment in with static mixing stirring reaction unit of multiple-effect: a cross beam is arranged on the sludge outlet, and the threaded guide sleeve is fixedly connected to the cross beam or the stirring shaft; the screw rod is fixedly connected to the support frame, and the threaded guide sleeve is connected to the screw rod through the threaded sleeve.
The to-be-solved technical problem of the utility model can also be further realized through following technical scheme, above sewage treatment in with static mixing stirring reaction unit of multiple-effect: and the sludge suction port at the bottom end of the sludge return pipe is arranged below the water outlet at the bottom end of the vertical mixer.
The to-be-solved technical problem of the utility model can also be further realized through following technical scheme. The utility model also provides a sewage treatment is with static mixing stirring reaction system of multiple-effect, its characteristics are, a sewage treatment is with static mixing stirring reaction system of multiple-effect, its characterized in that: the device comprises a plurality of reaction units, wherein the reaction units are the multi-effect static mixing stirring reaction device for sewage treatment in any one of the technical schemes;
the feeding pipeline is provided with a feeding pipe main path and a plurality of feeding pipe branches, the compressed air pipe is provided with a compressed air main pipe and a plurality of compressed air branch pipes, the plurality of reaction units are connected to the feeding pipe main path in parallel through the plurality of feeding pipe branches, the plurality of reaction units are connected to the compressed air main pipe in parallel through the plurality of compressed air branch pipes, and valves are arranged on each feeding pipe branch and each compressed air branch pipe; a plurality of reaction units are fixedly arranged on the support frame.
Compared with the prior art, the beneficial effects of the utility model are that:
the utility model discloses well sewage treatment is with static mixing stirring reaction unit of multiple-effect's beneficial effect is:
(1) the device lifts and discharges the sludge in the sludge sedimentation tank into the mixing chamber by introducing compressed air into the sludge return pipe, the lower end of the vertical mixer is open, the sludge can internally return, the sludge can be mixed with the sludge while sewage and feed are mixed, and the device has the characteristics of multiple-effect mixing, less dosage, reduction of sewage treatment cost, good mixing effect and good effluent quality;
(2) the device can realize the full stirring and mixing of raw water, medicine and sludge by arranging the baffling wall on the inner wall of the vertical mixer for baffling or arranging the stirrer in the mixing chamber for static stirring;
(3) the further elevating system that has designed of this device realizes the oscilaltion of agitator, changes the liquid velocity of flow, realizes different stirring intensity, can change stirring intensity according to actual sewage treatment needs, adjusts the reaction effect of mixing the stirring.
The utility model discloses well sewage treatment is with static stirring reaction system that mixes of multiple-effect's beneficial effect is:
the multi-effect static mixing and stirring reaction system for sewage treatment, which is formed by connecting a plurality of reaction units in parallel, can enable a large-scale sedimentation tank or a plurality of small-scale sedimentation tanks to simultaneously carry out mixing and stirring treatment, meet the requirements of mixing and stirring reaction of the large-scale sedimentation tanks and improve the working efficiency of sewage treatment.
Drawings
Fig. 1 is a schematic structural view of the present invention;
FIG. 2 is a schematic structural view of embodiment 3;
FIG. 3 is a schematic structural view of example 4;
FIG. 4 is a schematic structural view of example 5;
FIG. 5 is a schematic structural view of example 6;
FIG. 6 is a schematic structural view of example 7;
FIG. 7 is a schematic structural view of example 8;
FIG. 8 is a schematic structural view of example 9;
FIG. 9 is a schematic structural view of example 10;
FIG. 10 is a schematic structural view of example 11;
FIG. 11 is a schematic structural view of example 12;
FIG. 12 is a schematic structural view of example 13;
FIG. 13 is a schematic view of the structure of example 14.
In the figure: 1. the mixer comprises a vertical mixer, 101, a mixing chamber, 102, a baffle, 103, a vertical mixer body, 104, a water inlet hopper, 105, a water outlet, 106, a barrel hoop, 2, a sludge return pipe, 201, a sludge outlet, 202, a sludge outlet pipe, 203, a pipe cap, 204, a pipe body, 205, a stirring part, 3, a compressed air pipe, 301, a compressed air branch pipe, 302, an air distributor, 4, a coagulant aid pipeline, 401, a coagulant aid branch, 5, a flocculant pipeline, 6, a raw water pipeline, 601, a raw water branch, 7, a support frame, 8, a blade type stirrer, 801, a flat blade, 802, a stirring shaft, 803, a helical blade, 9, a threaded guide sleeve and 10 screws.
Detailed Description
The following further describes embodiments of the present invention in order to facilitate further understanding of the present invention by those skilled in the art, and does not constitute a limitation to the right thereof.
[ example 1 ]
Referring to fig. 1, a multi-effect static mixing and stirring reaction device for sewage treatment comprises a vertical mixer 1, a sludge return pipe 2, a compressed air pipe 3 and a feeding pipeline;
the vertical mixer 1 comprises a vertical mixer body 103 and a mixing chamber 101, wherein a baffling wall is arranged on the inner wall of the vertical mixer body 103; the vertical mixer 1 is immersed in the sedimentation tank, the upper end of the vertical mixer body 103 is higher than the liquid level of the sedimentation tank, a barrel hoop 106 is sleeved on the vertical mixer body 103 and is fixedly arranged on a support frame 7 through the barrel hoop 106, and the support frame 7 is fixedly arranged on the outer wall of the sedimentation tank; the sludge return pipe 2 is vertically arranged on the support frame 7, and the sludge return pipe 2 is arranged outside the vertical mixer 1; the upper end of the sludge return pipe 2 is provided with a sludge outlet pipe 202 which is communicated with the mixing chamber 101; the sludge outlet pipe 202 is higher than the liquid level of the sedimentation tank, two ends of the sludge return pipe 2 are open, and the sludge return pipe 2 is arranged on the support frame 7;
the compressed air pipe 3 is introduced into the lower part of the sludge return pipe 2 from the sludge return pipe 2, and the compressed air pipe 3 is connected with an air supply device;
the feeding pipeline comprises a raw water pipeline 6 and a dosing pipeline which are led into the mixing chamber 101, the feeding pipeline comprises a raw water pipeline 6, a flocculating agent pipeline 5 and a coagulant aid pipeline 4, and valves are respectively connected to the raw water pipeline 6, the flocculating agent pipeline 5 and the coagulant aid pipeline 4.
[ example 2 ]
Referring to fig. 1, the multi-effect static mixing stirring reaction device for sewage treatment described in example 1 is different from the embodiment in that the baffle wall is a plurality of inward-protruding baffle parts 102 arranged on the inner wall of the vertical mixer 1; the baffling parts 102 are same in shape and size and are uniformly distributed on the inner wall of the vertical mixer 1, and the baffling parts 102 are smoothly connected with the inner wall of the vertical mixer 1; when raw water, flocculant, coagulant aid and sludge enter the mixing chamber 101, fluid impacts the baffling part 102 in the flowing process, the velocity gradient of laminar flow motion of the fluid is increased or turbulence is formed, the flowing state of the fluid in the mixing chamber 101 is changed, and the effects of good dispersion and full mixing among the raw water, the flocculant, the coagulant aid and the sludge are achieved. The top end of the vertical mixer 1 is provided with a water inlet hopper 104; the bottom end of the vertical mixer 1 is provided with a water outlet 105, the water outlet 105 is in a horn shape, fluid flows downwards in the mixing chamber 101 and forms jet flow through the water outlet 105, and the water is dispersed towards four sides to realize uniform water distribution.
The sludge return pipe 2 is arranged outside the vertical mixer 1, and the compressed air pipe 3 is introduced into the lower part of the sludge return pipe 2 from the inside of the sludge return pipe 2.
The sludge return pipe 2 is provided with a sludge outlet 201, the sludge outlet 201 is provided with a stretched sludge outlet pipe 202, the sludge outlet pipe 202 stretches into the mixing chamber 101, the lower part of the sludge return pipe 2 is provided with a bending pipe, and a sludge suction port at the bottom end of the bending pipe is arranged below the water outlet 105 at the bottom end of the vertical mixer 1. When compressed air is introduced into the compressed air pipe 3, the compressed air is discharged into the sludge return pipe 2, the density of water is reduced, the pressure is reduced, sludge in a sludge hopper arranged in the sedimentation tank is pressed into the sludge return pipe 2, the sludge ascends to the sludge outlet 201 along the sludge return pipe 2, and when the sludge is continuously higher than the sludge outlet 202, the sludge overflows into the sludge outlet 202 and is discharged to the mixing chamber 101 from the outlet of the sludge outlet 202;
[ example 3 ]
Referring to fig. 2, the multi-effect static mixing stirring reaction apparatus for sewage treatment described in example 1, in this example,
the vertical mixer 1 and the sludge return pipe 2 in example 2 were used as the vertical mixer 1 and the sludge return pipe 2.
The sludge return pipe 2 is arranged outside the vertical mixer 1, the compressed air pipe 3 is connected to the lower part of the sludge return pipe 2 from the outside of the sludge return pipe 2, the lower part of the pipe body 204 is provided with an air vent with the aperture matched with the diameter of the compressed air pipe 3, and the tail end of the compressed air pipe 3 penetrates through the air vent and extends into the pipe body 204.
[ example 4 ]
Referring to fig. 3, the multi-effect static mixing stirring reaction apparatus for sewage treatment described in example 1, in this example,
the vertical mixer 1 used in example 2 was the vertical mixer 1.
The sludge return pipe 2 is arranged outside the vertical mixer 1, and the compressed air pipe 3 is introduced into the lower part of the sludge return pipe 2 from the inside of the sludge return pipe 2.
The upper part of the pipe body 204 of the sludge return pipe 2 is provided with a sludge outlet pipe 202 which extends outwards, and the sludge outlet pipe 202 extends into the mixing chamber 101; the upper end opening of the sludge return pipe 2 is provided with a pipe cap 203 matched with the opening of the sludge return pipe 2, and the pipe cap 203 is covered on the upper end opening of a pipe body 204 of the sludge return pipe 2 to prevent sludge from overflowing.
[ example 5 ]
Referring to fig. 4, the multi-effect static mixing stirring reaction apparatus for sewage treatment described in example 1, in this example,
the vertical mixer 1 used in example 2 was the vertical mixer 1.
The sludge return pipe 2 is arranged in the vertical mixer 1 and is coaxial with the vertical mixer 1, the compressed air pipe 3 is led into the lower part of the sludge return pipe 2 from the inside of the sludge return pipe 2, and the bottom end of the compressed air pipe 3 does not extend out of the sludge return pipe 2.
The top end of the sludge return pipe 2 is provided with a sludge outlet 201, and the bottom end of the sludge return pipe 2 extends out of the bottom end of the vertical mixer 1.
[ example 6 ]
Referring to fig. 5, the multi-effect static mixing stirring reaction apparatus for sewage treatment described in example 1, in this example,
the vertical mixer 1 in the embodiment 2 is adopted as the vertical mixer 1, and the sludge return pipe 2 in the embodiment 5 is adopted as the sludge return pipe 2.
The compressed air pipe 3 is connected to the lower part of the sludge return pipe 2 from the outside of the sludge return pipe 2, and the tail end of the compressed air pipe 3 is connected and communicated with the lower part of the sludge return pipe 2.
[ example 7 ]
Referring to fig. 6, the multi-effect static mixing stirring reaction apparatus for sewage treatment described in example 1, in this example,
the vertical mixer 1 and the sludge return pipe 2 in example 2 were used as the vertical mixer 1 and the sludge return pipe 2.
A gas stirrer for enhancing stirring strength is installed in the vertical mixer 1, the gas stirrer comprises a compressed air branch pipe 301 arranged in the mixing chamber 101, and the compressed air branch pipe 301 and the compressed air pipe 3 share the same air supply device; an air distributor 302 is arranged at the lower part of the compressed air branch pipe 301;
and a valve is arranged on the compressed air branch pipe 301.
[ example 8 ]
Referring to fig. 7, the multi-effect static mixing stirring reaction device for sewage treatment described in example 1, in this example, the vertical mixer 1 described in example 2 was used as the vertical mixer 1 described in example 1.
And a solid stirrer for enhancing stirring strength is arranged in the vertical mixer 1.
The solid stirrer is a tubular stirrer.
The tubular stirrer is formed by arranging a sludge return pipe 2 and a stirrer in a combined manner, the sludge return pipe 2 is arranged in the vertical mixer 1 and is coaxially arranged with the vertical mixer 1, a plurality of stirring parts 205 protruding outwards are arranged on the outer wall of the sludge return pipe 2, and the plurality of stirring parts 205 and the outer wall of the sludge return pipe 2 are combined to form a stirring wall; the stirring parts 205 are the same in shape and size and are uniformly distributed on the outer wall of the sludge return pipe 2, and the stirring parts 205 are smoothly connected with the outer wall of the sludge return pipe 2; the sludge return pipe 2 is arranged in the mixing chamber 101 in a way that the stirring parts 205 are close to and below the baffling parts 102, and one stirring part 205 is correspondingly arranged below each baffling part 102; the sludge return pipe 2 can be lifted, and the upper limit position of the sludge return pipe 2 is that the maximum diameter position of the stirring part 205 is flush with the maximum diameter position of the baffling part 102; the lower limit position of the sludge return pipe 2 is that the top end of a stirring part 205 is flush with the maximum diameter of the baffling part 102;
the compressed air pipe 3 is led from the inside of the sludge return pipe 2 to the lower part of the sludge return pipe 2.
The bottom end of the compressed air pipe 3 is 100mm higher than the bottom end of the sludge return pipe 2, so that compressed air discharged from the compressed air pipe 3 is prevented from overflowing the sludge return pipe 2;
the top end of the sludge return pipe 2 is provided with a sludge outlet 201; the horizontal distance between the baffle part 102 and the stirring part 205 is 30 mm; the bottom of the sludge return pipe 2 is provided with a section of pipe body 204 with the same diameter and extends out of the vertical mixer 1.
The top end of the sludge return pipe 2 is lower than the top end of the vertical mixer 1, and the lifted sludge overflows and is discharged into the mixing chamber 101.
[ example 9 ]
Referring to fig. 8, the multi-effect static mixing stirring reaction apparatus for sewage treatment described in example 1, in this example,
the vertical mixer 1 in embodiment 2 is adopted as the vertical mixer 1, the sludge return pipe 2 in embodiment 8 is adopted as the sludge return pipe 2, the sludge return pipe 2 is arranged in the vertical mixer 1 and is coaxial with the vertical mixer 1, and the compressed air pipe 3 is connected to the lower part of the sludge return pipe 2 from the outside of the sludge return pipe 2.
[ example 10 ]
Referring to fig. 9, the multi-effect static mixing stirring reaction apparatus for sewage treatment described in example 1, in this example,
the vertical mixer 1 and the sludge return pipe 2 in example 2 were used as the vertical mixer 1 and the sludge return pipe 2.
The vertical mixer 1 is internally provided with a solid stirrer for enhancing stirring strength, and the solid stirrer is a blade type stirrer.
The blade type stirrer comprises a stirring shaft 802 which is connected with the support frame 7 and is coaxially arranged with the vertical mixer 1, and stirring blades are arranged on the stirring shaft 802.
The stirring blades are flat blades 801; the flat plate blades 801 are a plurality of uniformly spaced circular blades, the flat plate blades 801 are arranged in a manner that the circle center falls on the axis of the stirring shaft 802, and each flat plate blade 801 is arranged at the lower part close to the baffling part of the vertical mixer 1;
[ example 11 ]
Referring to fig. 10, the multi-effect static mixing stirring reaction apparatus for sewage treatment described in example 1, in this example,
the vertical mixer 1 and the sludge return pipe 2 in example 2 were used as the vertical mixer 1 and the sludge return pipe 2.
The vertical mixer 1 is internally provided with a solid stirrer for enhancing stirring strength, and the solid stirrer is a blade type stirrer.
The stirring blade is a helical blade 803; the helical blades 803 are spirally wound on the stirring shaft 802 from top to bottom along the stirring shaft 802.
[ example 12 ]
Referring to fig. 11, the multi-effect static mixing stirring reaction apparatus for sewage treatment described in example 1, in this example,
the sludge return pipe 2 is the sludge return pipe 2 in the embodiment 2.
The inner wall and the outer wall of the vertical mixer 1 are straight walls, and a water inlet hopper 104 is fixedly arranged at the upper end of the vertical mixer 1; the lower end of the vertical mixer 1 is fixedly provided with a water outlet 105, the water outlet 105 is in a horn shape, raw water descends in the mixing chamber 101 and forms jet flow through the water outlet 105, and the water is dispersed towards four sides to realize uniform water distribution.
The vertical mixer 1 is fixedly arranged in the sedimentation tank, the top end of the vertical mixer 1 extends out of the sedimentation tank, a barrel body of the vertical mixer 1 is sleeved with a barrel hoop 106, and the barrel body is fixedly arranged on the support frame 7 through the barrel hoop 106.
The vertical mixer 1 is provided with a solid stirrer, and the solid stirrer in this example is a helical blade 803 type stirrer described in example 11.
[ example 13 ]
Referring to fig. 12, in the multi-effect static mixing and stirring reactor for sewage treatment described in embodiment 1, in this embodiment, the sludge return pipe 2 described in embodiments 8 and 12 is connected to the support frame 7 through the lifting mechanism, and the stirring shaft 802 described in any of embodiments 9 to 11 is connected to the support frame 7 through the lifting mechanism; the lifting mechanism comprises a threaded guide sleeve 9 and a screw 10 matched with the threaded guide sleeve 9;
the upper end of the sludge outlet 201 is provided with a beam, and the threaded guide sleeve 9 is fixedly connected to the beam or the stirring shaft 802; the screw rod 10 is fixedly connected to the support frame 7, and the threaded guide sleeve 9 is connected to the screw rod 10 through threaded sleeve. When the lifting device is used, the lifting of the sludge return pipe 2 can be realized by rotating the threaded guide sleeve 9.
The vertical mixer 1, the sludge return pipe 2, the compressed air pipe 3 and the feeding pipeline are all made of stainless steel materials, and liquid level scales are arranged on the side wall of the water inlet hopper 104. If the liquid level in the mixing chamber 101 changes, the height of the sludge return pipe 2 or the stirring shaft 802 is adjusted according to the liquid level change, when the liquid level in the mixing chamber 101 is higher than or lower than a set value, the sludge return pipe 2 or the stirring shaft 802 is adjusted down/up, the flow rate is reduced/increased, the mixing strength is reduced/enhanced, the overflowing area is increased/reduced, the energy loss is reduced/increased, the liquid level difference is reduced, and the liquid level returns to the set value.
[ example 14 ]
Referring to fig. 13, this embodiment is a multiple-effect static mixing and stirring reaction system for sewage treatment, which includes a plurality of reaction units, where the reaction units adopt the multiple-effect static mixing and stirring reaction apparatus for sewage treatment described in embodiment 13, and there are 4 reaction units in this embodiment;
the feeding pipeline is provided with a feeding pipe main path and a plurality of feeding pipe branches, the compressed air pipe 3 is provided with a compressed air main pipe and 4 compressed air branch pipes 301, 4 reaction units are connected to the feeding pipe main path in parallel through the 4 feeding pipe branches, the 4 reaction units are connected to the compressed air main pipe in parallel through the 4 compressed air branch pipes 301, and valves are arranged on the 4 feeding pipe branches and the compressed air branch pipes 301; the 4 reaction units are fixedly arranged on the support frame 7.
The system generates a baffling effect by arranging a baffling wall on the inner wall of the vertical mixer 1, and the stirrer is arranged in the vertical mixer 1, so that the aim of multi-effect static mixing and stirring is fulfilled; the stirring intensity can be adjusted by changing the height of the stirrer in the mixing chamber 101. When the sludge return pipe 2 is lifted up, the slit between the stirring portion 205 and the baffle portion 102 becomes small, the stirring strength increases, and the head loss also increases. Such as: the water flow velocity at the maximum inner diameter in the mixing chamber 101 is 0.2m/s, and the water flow velocity from the maximum diameter of the baffle 102 can be increased to 0.8 m/s.
The method for performing static mixing and stirring by using the multiple-effect static mixing and stirring reaction device for sewage treatment described in any one of embodiments 1 to 13 or the multiple-effect static mixing and stirring reaction system for sewage treatment described in embodiment 14 includes that raw water and chemicals are respectively introduced into the mixing chamber 101 through the raw water pipeline 6 and the chemical adding pipeline, static mixing is realized under the baffling effect of the baffling wall of the vertical mixer 1 or the static stirring effect of the mixer, and sludge in the sedimentation tank is lifted and refluxed through the sludge reflux pipe 2 to participate in mixing of the raw water and the chemicals.
The method comprises the following steps of,
(1) opening a valve on a compressed air pipe 3 line, introducing compressed air into a sludge return pipe 2 and mixing the compressed air into water, reducing the density and pressure of the water, pressing sludge in a sludge hopper arranged in a sedimentation tank into the sludge return pipe 2, and discharging the sludge into a mixing chamber 101 along the sludge return pipe 2;
(2) the valves on the raw water pipeline 6 and the dosing pipeline are opened, the raw water and the dosing materials enter the mixing chamber 101 to be mixed and reacted with the lifted sludge, the mixing reaction effect is enhanced, and finally large-particle sludge is generated and is downwards sunk into the sedimentation tank, so that the backflow of the sludge in the sedimentation tank is realized;
(3) the mixed and clarified water overflows and is discharged from a water outlet 105 arranged in the sedimentation tank.
High concentration mud of bottom is mixed with raw water, flocculating agent and coagulant aid in being carried to mixing chamber 101 by the gas, realizes adding the dual static mixture of medicine and mud, forms large granule mud after the mixture and flows into the sludge bucket that the sedimentation tank was established once more, realizes the inside backward flow of mud, strengthens the reaction effect, has reached the effect of high density clarification tank to a certain extent, has improved out water quality of water.
The underwater part of the device has a simple structure, is maintenance-free, and can realize maintenance without stopping water, and all maintenance parts are above the water surface.
Claims (10)
1. The utility model provides a multiple-effect static mixing stirring reaction unit for sewage treatment which characterized in that: comprises a vertical mixer, a sludge return pipe, a compressed air pipe and a feeding pipeline;
the vertical mixer comprises a vertical mixer body and a mixing chamber, wherein a baffling wall is arranged on the inner wall of the vertical mixer body and/or a stirrer is arranged in the mixing chamber; the vertical mixer is fixedly arranged on the support frame;
the sludge return pipe is vertically arranged on the support frame and is positioned in the vertical mixer or outside the vertical mixer; the upper end of the sludge return pipe is provided with a sludge outlet or a sludge outlet pipe communicated with the mixing chamber;
the compressed air pipe is introduced into the lower part of the sludge return pipe from the sludge return pipe or is introduced into the lower part of the sludge return pipe from the outside of the sludge return pipe;
the feeding pipeline comprises a raw water pipeline and a dosing pipeline which are communicated with the mixing chamber.
2. The multi-effect static mixing stirring reaction device for sewage treatment as claimed in claim 1, wherein: the baffling wall is a plurality of inward-convex baffling parts arranged on the inner wall of the vertical mixer.
3. The multi-effect static mixing stirring reaction device for sewage treatment as claimed in claim 1, wherein: the stirrer is a gas stirrer or a solid stirrer;
the gas stirrer comprises a compressed air branch pipe which is introduced into the bottom of the mixing chamber, and a gas distributor is arranged at the lower part of the compressed air branch pipe;
the solid stirrer is a tubular stirrer or a blade stirrer.
4. The multi-effect static mixing stirring reaction device for sewage treatment as claimed in claim 3, wherein: the tubular stirrer is a stirring pipe arranged in the mixing chamber, or is formed by arranging a sludge return pipe and a stirrer in a combined manner, the stirring pipe or the sludge return pipe is arranged in the vertical mixer and is coaxial with the vertical mixer, and a plurality of stirring parts protruding outwards are arranged on the outer wall of the stirring pipe or the sludge return pipe;
the blade type stirrer comprises a stirring shaft which is arranged in the mixing chamber and is coaxial with the vertical mixer, and stirring blades are arranged on the stirring shaft; the stirring shaft is fixedly connected to the support frame.
5. The multi-effect static mixing stirring reaction device for sewage treatment as claimed in claim 4, wherein: the stirring blade is a flat blade or a spiral blade; the flat plate blades are a plurality of circular blades which are fixedly connected to the stirring shaft at uniform intervals from top to bottom, and the circular blades are arranged in a manner that the circle center falls on the axis of the stirring shaft; the helical blades are spirally wound on the stirring shaft from top to bottom along the stirring shaft.
6. The multi-effect static mixing stirring reaction device for sewage treatment as claimed in claim 4, wherein: the sludge return pipe or the stirring shaft is connected to the support frame through the lifting mechanism.
7. The multi-effect static mixing stirring reaction device for sewage treatment as claimed in claim 6, wherein: the lifting mechanism comprises a threaded guide sleeve and a screw matched with the threaded guide sleeve.
8. The multi-effect static mixing stirring reaction device for sewage treatment as claimed in claim 1, wherein: a cross beam is arranged on the sludge outlet, and the threaded guide sleeve is fixedly connected to the cross beam or the stirring shaft; the screw rod is fixedly connected to the support frame, and the threaded guide sleeve is connected to the screw rod through the threaded sleeve.
9. The multi-effect static mixing stirring reaction device for sewage treatment as claimed in claim 1, wherein: and the sludge suction port at the bottom end of the sludge return pipe is arranged below the water outlet at the bottom end of the vertical mixer.
10. The utility model provides a multiple-effect static mixing stirring reaction system for sewage treatment which characterized in that: the device comprises a plurality of reaction units, wherein the reaction units are the multi-effect static mixing stirring reaction device for sewage treatment as set forth in any one of claims 1-9;
the feeding pipeline is provided with a feeding pipe main path and a plurality of feeding pipe branches, the compressed air pipe is provided with a compressed air main pipe and a plurality of compressed air branch pipes, the plurality of reaction units are connected to the feeding pipe main path in parallel through the plurality of feeding pipe branches, the plurality of reaction units are connected to the compressed air main pipe in parallel through the plurality of compressed air branch pipes, and valves are arranged on each feeding pipe branch and each compressed air branch pipe; a plurality of reaction units are fixedly arranged on the support frame.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
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| CN109761329A (en) * | 2019-03-19 | 2019-05-17 | 连云港大禹水处理工程有限公司 | Sewage treatment is stirred to react device and system and method with multiple-effect static mixing |
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| Publication number | Priority date | Publication date | Assignee | Title |
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| CN109761329A (en) * | 2019-03-19 | 2019-05-17 | 连云港大禹水处理工程有限公司 | Sewage treatment is stirred to react device and system and method with multiple-effect static mixing |
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