CN216837350U

CN216837350U - Rotational flow aeration and sedimentation device

Info

Publication number: CN216837350U
Application number: CN202123198381.3U
Authority: CN
Inventors: 张学会; 许璐; 狄艳秋; 安桂杰; 张红英
Original assignee: Beijing Longyuan Environmental Engineering Co ltd
Current assignee: Beijing Longyuan Environmental Engineering Co ltd
Priority date: 2021-12-17
Filing date: 2021-12-17
Publication date: 2022-06-28
Anticipated expiration: 2031-12-17

Abstract

The utility model discloses a rotational flow aeration sedimentation device, which comprises a precipitator, a flow guide rectification component, an aeration component and a vortex generator, wherein the precipitator comprises a precipitator body, the upper edge of the precipitator body is provided with a precipitator overflow weir, the bottom of the precipitator overflow weir is connected with a precipitator bottom flow port, the lower part of the precipitator overflow weir is connected with a precipitator water outlet, the vortex generator comprises a vortex generator body, the upper side wall of the vortex generator body is provided with a water inlet, and the top of the vortex generator body is provided with an air inlet; the aeration component comprises an aeration inner barrel and a rotational flow aeration head connected to the bottom of the aeration inner barrel, the rotational flow aeration head is connected with an outlet at the bottom of the vortex generator, the flow guide rectification component comprises a middle flow guide barrel and a rectifier, and the middle flow guide barrel is sleeved outside the aeration inner barrel and is positioned right above the rectifier. The device can realize short-time aeration of the high-suspended matter wastewater, play the roles of homogenizing water quality and reducing COD, reduce a newly-added aeration tank and reduce cost.

Description

Rotational flow aeration and sedimentation device

Technical Field

The utility model belongs to the waste water treatment field, concretely relates to whirl aeration of high suspended solid waste water such as lime stone-gypsum wet flue gas desulfurization waste water, ammonia nitrogen waste water, low concentration COD waste water deposits device.

Background

The desulfurized wastewater is from the overflow of the wastewater cyclone of a gypsum dewatering building, contains a large amount of suspended matter, and contains a large amount of sulfite. Sometimes, in order to utilize water resources in a gradient manner, waste water of other systems is sent to a desulfurization system, and organic matters possibly contained in the waste water can cause that COD exceeds the standard when the desulfurization waste water is discharged. Therefore, the desulfurization wastewater must be fully aerated in the pretreatment stage of the desulfurization wastewater, so that sulfite is converted into sulfate radicals or part of organic matters are decomposed, and finally COD is discharged after reaching the standard. The reaction time for oxidizing the sulfite into the sulfate is short, and an aeration tank needs to be specially arranged, so that the cost is increased.

Although the vertical flow type precipitator is widely applied to the field of wastewater treatment and can remove suspended matters in wastewater to clarify water quality, the conventional precipitator only has a precipitation effect, and has a single function and a common treatment effect.

Therefore, a device which has the functions of short-time aeration and sedimentation, is low in cost and has a good treatment effect is urgently needed.

SUMMERY OF THE UTILITY MODEL

The utility model provides a whirl aeration deposits device, the device enable high suspended solid waste water to realize the short-time aeration, play homogenization quality of water and reduce COD's effect, reduce newly-increased aeration tank, reduce cost.

The utility model discloses whirl aeration deposits device, including the settler, be located the water conservancy diversion rectification subassembly, aeration subassembly, the vortex generator of settler, the settler includes the settler body, the upper portion edge of settler body is provided with the settler overflow weir, the lower part or the bottom surface of settler overflow weir are connected with the settler delivery port, the bottom of settler body is connected with settler underflow opening; the vortex generator is arranged higher than the overflow weir of the precipitator and comprises a vortex generator body, a water inlet is formed in the side wall of the upper part of the vortex generator body, an air inlet is formed in the top of the vortex generator body, and a connecting pipeline is connected to an outlet in the bottom of the vortex generator body; the aeration component comprises a rotational flow aeration head and an aeration inner barrel, the aeration inner barrel adopts a barrel body with a cylindrical upper inner cavity and a conical lower inner cavity, the rotational flow aeration head is connected to the bottom of the aeration inner barrel, and the rotational flow aeration head is connected with a connecting pipeline; the flow guide rectification assembly comprises a middle flow guide cylinder and a rectifier arranged at the lower part of the precipitator, and the middle flow guide cylinder is sleeved on the outer surface of the aeration inner cylinder and is positioned right above the rectifier.

The utility model relates to a whirl aeration deposits device, wherein, the air inlet of vortex generator body is connected with the intake pipe, and vortex generator passes through intake pipe and atmosphere intercommunication.

The utility model relates to a whirl aeration deposits device, wherein, the water inlet of vortex generator body is connected with the water intake pipe, advances the tangential direction setting of pipeline edge vortex generator body, and the vortex generator passes through the water intake pipe and connects the water source.

The utility model relates to a whirl aeration deposits device, wherein, the direction of admitting air of intake pipe is perpendicular with the direction of intaking of water intake pipe.

The utility model relates to a whirl aeration deposits device, wherein, the rectifier adopts the toper rectifier, the vertex of a cone of rectifier sets up under at the upper and lower awl end, the rectifier is installed in the pyramis top of precipitator body and is set up with the same heart with precipitator body outer wall, the outward flange and the precipitator inner wall of the awl end of rectifier have a determining deviation.

The utility model relates to a whirl aeration deposits device, wherein, the direction of precipitator delivery port is the horizontal direction.

The utility model relates to a whirl aeration deposits device, wherein, the direction of precipitator delivery port is perpendicularly downwards.

The utility model relates to a whirl aeration deposits device, wherein, the export bottom face of vortex generator body is higher than the bottom face of precipitator overflow weir.

The utility model relates to a whirl aeration deposits device, wherein, the upper portion of precipitator body is cylindrical, and the lower part is the obconic shape.

The utility model relates to a whirl aeration deposits device, wherein, middle draft tube adopts upper portion for the ring shape, the lower part is the barrel of horn mouth shape, and the horn mouth is big end down.

When the cyclone aeration and sedimentation device is used, high-suspended substance wastewater enters the vortex generator body through the water inlet pipeline, and air is sucked into water through the air inlet pipe and mixed with water to enter the sedimentation device due to the generation of vortex and the existence of certain pressure difference; the air bubbles are uniformly distributed in the aeration inner cylinder by rectification of a rotational flow aeration head in the aeration inner cylinder to realize aeration; the aerated wastewater overflows into the middle guide cylinder, and is uniformly distributed through the conical rectifier; controlling a certain rising flow velocity to settle suspended matters in the wastewater, discharging thick slurry formed by the suspended matters from a bottom flow port of the precipitator, and discharging the wastewater subjected to aeration and precipitation from a water outlet of the precipitator; the aeration in a short time is realized, the effects of homogenizing water quality and reducing COD are achieved, the treatment effect is good, the aeration and the precipitation are completed in the device, an aeration tank is not required to be additionally arranged, and the cost is reduced.

The present invention will be described in detail with reference to the accompanying drawings and specific embodiments.

Drawings

FIG. 1 is a main sectional view of a cyclone aeration and sedimentation device of the present invention;

FIG. 2 is a schematic view of a three-dimensional structure of a cyclone aeration and sedimentation device of the present invention;

wherein, 1-an air inlet pipe, 2-a vortex generator body, 3-a water inlet pipeline, 4-a connecting pipeline, 5-a rotational flow aeration head, 6-an aeration inner cylinder, 7-a middle guide cylinder, 8-a rectifier, 9-a precipitator body, 10-a precipitator overflow weir, 11-a precipitator water outlet and 12-a precipitator underflow opening.

Detailed Description

As shown in figures 1 and 2, the utility model relates to a cyclone aeration and sedimentation device, which comprises a precipitator, a flow guide and rectification component, an aeration component and a vortex generator, wherein the flow guide and rectification component, the aeration component and the vortex generator are positioned in the precipitator.

As shown in fig. 1, the precipitator includes a precipitator body 9, a precipitator overflow weir 10 is disposed at an upper edge of the precipitator body 9, an overflow groove is formed between the precipitator overflow weir 10 and the precipitator body 9, a precipitator water outlet 11 is connected to a lower portion or a bottom surface of the precipitator overflow weir 10, and a precipitator underflow port 12 is connected to a bottom of the precipitator body 9.

As shown in fig. 1, the vortex generator is arranged higher than the overflow weir 10 of the precipitator, the vortex generator comprises a vortex generator body 2, a water inlet is arranged on the upper side wall of the vortex generator body 2, the water inlet of the vortex generator body 2 is connected with a water inlet pipeline 3, the water inlet pipeline 3 is arranged along the tangential direction of the vortex generator body 2, and the vortex generator is connected with a water source through the water inlet pipeline 3; the top of the vortex generator body 2 is provided with an air inlet, the air inlet of the vortex generator body 2 is connected with an air inlet pipe 1, and the vortex generator is communicated with the atmosphere through the air inlet pipe 1; the air inlet direction of the air inlet pipe 1 is vertical to the water inlet direction of the water inlet pipeline 3; the outlet at the bottom of the vortex generator 2 is connected with a connecting pipeline 4.

As shown in fig. 1, the aeration assembly comprises a rotational flow aeration head 5 and an aeration inner cylinder 6, wherein the aeration inner cylinder 6 is a cylinder with a cylindrical upper inner cavity and a conical lower inner cavity, the rotational flow aeration head 5 is connected to the bottom of the aeration inner cylinder 6, and the rotational flow aeration head 5 is connected with a connecting pipeline 4; the flow guide rectification assembly comprises a middle flow guide cylinder 7 and a rectifier 8, wherein the middle flow guide cylinder 7 is sleeved on the outer surface of the aeration inner cylinder 6 and is positioned right above the rectifier 8, the rectifier 8 is a conical rectifier, the conical top of the rectifier 8 is arranged above the conical bottom of the aeration inner cylinder, the rectifier 8 is arranged above the conical part of the precipitator body 2 and is concentrically arranged with the outer wall of the precipitator body 2, a certain distance is reserved between the outer edge of the conical bottom of the rectifier 8 and the inner wall of the precipitator, and thick slurry formed by suspended matters can enter the lower conical part of the precipitator body and be discharged through a bottom flow port 12 of the precipitator.

As shown in fig. 1, the direction of the water outlet 11 of the precipitator is horizontal. The direction of the water outlet of the precipitator can also be vertically downward.

As shown in fig. 1, the outlet bottom end face of the vortex generator body 2 is higher than the bottom end face of the settler overflow weir 10.

As shown in fig. 1, the upper portion of the settler body 9 is cylindrical and the lower portion is inverted conical. The middle guide shell 7 is a cylinder with a circular upper part and a horn mouth lower part, and the horn mouth is small at the upper part and big at the lower part.

When the device is arranged, the vortex generator 2 and the settler overflow weir 10 need to have a certain height difference, and the vortex generator is arranged to be higher than the settler overflow weir 10. This device is when using, and high suspended solid waste water gets into vortex generator body 2 by inlet channel 3, owing to produce the vortex and have certain pressure differential, the air can be inhaled to aquatic and water mixture entering precipitator by intake pipe 1. Then the air bubbles are evenly distributed in the aeration inner cylinder 6 by the rectification of the rotational flow aeration head 5 in the aeration inner cylinder 6, thereby realizing aeration. The aerated wastewater overflows into the middle guide cylinder 7, and is uniformly distributed through the conical rectifier 8. Controlling a certain rising flow velocity to settle suspended matters in the wastewater, discharging thick slurry formed by the suspended matters through a bottom flow port 12 of the precipitator, and discharging the wastewater after aeration and precipitation through a water outlet 11 of the precipitator.

The desulfurization waste water is taken as an example below, and the application of the utility model is compared with the prior art:

the desulfurized wastewater is from the overflow of a wastewater cyclone of a gypsum dewatering building, contains a large amount of suspended substances and contains a large amount of sulfite. Sometimes, in order to utilize water resources in a gradient manner, waste water of other systems is sent to a desulfurization system, and organic matters possibly contained in the waste water can cause that COD exceeds the standard when the desulfurization waste water is discharged. Therefore, the desulfurization wastewater must be fully aerated in the pretreatment stage of the desulfurization wastewater, so that sulfite is converted into sulfate radicals or part of organic matters are decomposed, and finally COD is discharged after reaching the standard. The reaction time of the oxidation of the sulfite into the sulfate is very short, and the cyclone aeration and sedimentation device of the utility model does not need to be specially provided with an aeration tank.

Early power plants do not have desulfurization waste water facilities, and desulfurization waste water of ordinary power plants enters an industrial wastewater pool for unified treatment after overflowing from a wastewater cyclone. But the desulfurization wastewater contains a large amount of heavy metals, and the desulfurization wastewater is required to be discharged after the heavy metals are treated in a desulfurization wastewater treatment workshop to reach the standard according to the standard. The main facilities for treating the desulfurization waste water are triple boxes, but before the waste water enters the triple boxes, aeration is carried out in a buffer tank to remove sulfite and reduce COD (chemical oxygen demand). Therefore, the rotational flow aeration and sedimentation device can be arranged at the front end of the triple box to replace a wastewater buffer tank, not only has the aeration function, but also can remove part of suspended matters, and can reduce the using amount of a flocculating agent and an oxidizing agent at the rear end.

Along with the update of the wastewater treatment technology in recent years, the desulfurization wastewater comprehensive treatment device gradually replaces the traditional triple-box treatment equipment. The aim of removing heavy metals and suspended matters can be achieved by adding a desulfurization wastewater comprehensive treatment agent into desulfurization wastewater comprehensive treatment equipment, so that the treatment cost and investment of desulfurization wastewater are greatly reduced compared with those of the traditional triple-box process. The cyclone aeration and sedimentation device can be arranged at the front end of the desulfurization wastewater comprehensive treatment device, plays the roles of oxidizing sulfite and reducing COD, and further reduces the consumption of rear-end comprehensive medicaments.

In the equipment arrangement, the desulfurization waste water cyclone is arranged at the topmost layer of the gypsum dehydration building, and the height of the desulfurization waste water cyclone is at least more than 20 m. The rotational flow aeration and sedimentation device can be arranged on the outdoor ground, just in time utilizes the height difference to provide enough high pressure difference for the vortex generator 2, so that a large amount of air is sucked into the desulfurization waste water, and regular release is obtained in the aeration inner cylinder 6, and the aeration process is completed.

Above contrast can know, the utility model discloses whirl aeration deposits device has realized the aeration in the short time, plays homogenization quality of water and reduces COD's effect, and the treatment effect is good, and the aeration all accomplishes in this device with the sediment, need not newly-increased aeration tank, the cost is reduced.

It should be known to those skilled in the art that the protection scheme of the present invention is not limited to the above-mentioned embodiments, and various permutations, combinations and transformations can be performed on the basis of the above-mentioned embodiments, without violating the spirit of the present invention, all the transformations performed by the present invention fall within the protection scope of the present invention.

Claims

1. A cyclone aeration and sedimentation device is characterized in that: the device comprises a precipitator, a flow guide rectification assembly, an aeration assembly and a vortex generator, wherein the flow guide rectification assembly, the aeration assembly and the vortex generator are positioned in the precipitator, the precipitator comprises a precipitator body (9), a precipitator overflow weir (10) is arranged on the edge of the upper part of the precipitator body (9), the lower part or the bottom surface of the precipitator overflow weir (10) is connected with a precipitator water outlet (11), and the bottom of the precipitator body (9) is connected with a precipitator underflow opening (12); the vortex generator is arranged higher than the overflow weir (10) of the precipitator and comprises a vortex generator body (2), a water inlet is formed in the side wall of the upper portion of the vortex generator body (2), an air inlet is formed in the top of the vortex generator body (2), and a connecting pipeline (4) is connected to an outlet in the bottom of the vortex generator body (2); the aeration component comprises a rotational flow aeration head (5) and an aeration inner barrel (6), the aeration inner barrel (6) adopts a barrel body with a cylindrical upper inner cavity and a conical lower inner cavity, the rotational flow aeration head (5) is connected to the bottom of the aeration inner barrel (6), and the rotational flow aeration head (5) is connected with a connecting pipeline (4); the flow guide rectification assembly comprises a middle flow guide cylinder (7) and a rectifier (8) arranged on the lower portion of the precipitator, wherein the middle flow guide cylinder (7) is sleeved on the outer surface of the aeration inner cylinder (6) and is located right above the rectifier (8).

2. A cyclonic aerated precipitation device as claimed in claim 1, wherein: the air inlet of vortex generator body (2) is connected with intake pipe (1), and the vortex generator passes through intake pipe (1) and communicates with the atmosphere.

3. A cyclonic aerated precipitation device as claimed in claim 2, wherein: the water inlet of vortex generator body (2) is connected with water intake pipe (3), and water intake pipe (3) set up along the tangential direction of vortex generator body (2), and the vortex generator passes through water intake pipe (3) and connects the water source.

4. A cyclonic aerated precipitation device as claimed in claim 3, wherein: the air inlet direction of the air inlet pipe (1) is perpendicular to the water inlet direction of the water inlet pipeline (3).

5. A cyclonic aerated precipitation device as claimed in claim 1, wherein: the rectifier (8) adopts a conical rectifier, the conical top of the rectifier (8) is arranged at the upper part and the conical bottom is arranged at the lower part, the rectifier (8) is arranged above the conical part of the precipitator body (9) and is concentrically arranged with the outer wall of the precipitator body, and a certain distance is reserved between the outer edge of the conical bottom of the rectifier (8) and the inner wall of the precipitator.

6. The cyclonic aeration and sedimentation device according to claim 1, wherein: the direction of the water outlet (11) of the precipitator is the horizontal direction.

7. A cyclonic aerated precipitation device as claimed in claim 1, wherein: the direction of the water outlet (11) of the precipitator is vertical downwards.

8. A cyclonic aerated precipitation device as claimed in claim 1, wherein: the bottom end face of the outlet of the vortex generator body (2) is higher than the bottom end face of the settler overflow weir (10).

9. The cyclonic aeration and sedimentation device according to claim 1, wherein: the upper part of the precipitator body (9) is cylindrical, and the lower part of the precipitator body is in an inverted cone shape.

10. A cyclonic aerated precipitation device as claimed in claim 1, wherein: the middle guide cylinder (7) is a cylinder body with the upper part being in a circular ring shape and the lower part being in a horn mouth shape, and the horn mouth is small at the upper part and large at the lower part.