CN218221210U - Sedimentation tank and water treatment system for preventing floating mud - Google Patents

Abstract

The utility model relates to a sewage treatment technical field particularly, relates to a sedimentation tank and water treatment system that prevent to float mud production. The sedimentation tank for preventing the floating mud comprises a tank body, wherein a water inlet and a water outlet are formed in the tank body; at least one mud bucket arranged at the bottom of the tank body; the floating mud removing device is arranged on the upper layer of a clear water area in the pool body and comprises a plurality of removing units; the elimination unit comprises two reflecting plates which form a notch facing the tank body and a tank bottom far away from the notch; the bottom of the tank is provided with a plurality of through air holes. This sedimentation tank sets up and floats mud remove device, floats mud and strikes the reflecting plate that floats mud remove device at the come-up in-process, can separate gas and the mud granule attached to on floating the mud granule, and the mud granule obtains the speed of sinking and subsides again, and gas overflows from the aperture at reflecting plate top.

Description

Sedimentation tank and water treatment system for preventing floating mud

Technical Field

The utility model relates to a sewage treatment technical field particularly, relates to a prevent sedimentation tank and water treatment system that mud floats produced.

Background

The activated sludge process is a widely adopted process for sewage treatment, and the sedimentation tank is an important component of an activated sludge system and plays a role in separating sludge and water, clarifying and concentrating mixed liquor and refluxing activated sludge.

In actual operation, the secondary sedimentation tank always floats upwards due to various reasons, so that the concentration of suspended matters in the effluent of the sedimentation tank is too high, and the quality of the effluent or a subsequent treatment unit is influenced. Sludge in the sedimentation tank floats upwards due to various reasons, sludge at the bottom of the sedimentation tank can be subjected to denitrification under an anoxic condition after staying for a certain time, and the generated nitrogen is released to cause the sludge to float upwards; sludge accumulation caused by dead corners of the sedimentation tank, and H generated by decaying of sludge in the sedimentation tank after too long retention time ₂ S，CO ₂ The gas can also lead the sludge to float upwards; in addition, the water tank of the sedimentation tank is too shallow, and particularly in small integrated equipment, the equipment height is limited, the design depth of the water tank is often small, the water flow can cause disturbance of sludge to enable the sludge to float, the water depth can also influence the solubility of nitrogen in water, and the shallower the water tank, the more easily the sludge floats.

Because of sewage plant sedimentation tank scrapes the mud bridge crane and rotates slower, small-size sewage treatment equips and does not set up the mud scraping device even, can not in time get rid of after the mud floating appears in the sedimentation tank, can cause the mud layer thickening, must clearly drag for through the manual work, consume a large amount of manpowers. The sludge is scattered by spraying tap water to enable the sludge to continue to settle, but the sludge inevitably causes turbidity of effluent under the impact of the tap water.

SUMMERY OF THE UTILITY MODEL

The utility model aims at providing a sedimentation tank and water treatment system that prevent to float mud and produce, this sedimentation tank sets up and floats mud remove device, floats mud and strikes the reflecting plate that floats mud remove device at the come-up in-process, can separate gas and the mud granule that adhere to on floating mud granule, and the mud granule obtains sunken speed and subsides again, and gaseous aperture from the reflecting plate top overflows.

The embodiment of the utility model discloses a can realize like this:

in a first aspect, the utility model provides a prevent sedimentation tank that floats mud production, include:

the pool body is provided with a water inlet and a water outlet;

the mud bucket is arranged at the bottom of the pool body;

the floating mud removing device is arranged in a clear water area in the pool body and comprises a plurality of removing units; the elimination unit comprises two reflecting plates which form a notch facing the tank body and a tank bottom far away from the notch; and a plurality of through vent holes are formed in the bottom of the groove.

The sedimentation tank that prevents that superficial mud from producing of this scheme has the superficial mud remove device, and the superficial mud remove device includes a plurality of elimination units. Each elimination unit comprises two reflecting plates, wherein each reflecting plate is provided with a notch and a groove bottom, the notch faces to the bottom of the sedimentation tank, and the ventilation holes on the groove bottom and the groove bottom face to the top of the sedimentation tank. When the floating mud remover is used, floating mud enters the floating mud remover from the notch in the upward floating process and impacts the wall of the removing unit, gas attached to floating mud particles in the floating mud is separated from sludge particles, the sludge particles are settled again at the sinking speed, and the gas overflows from small holes (namely vent holes) in the top of the reflecting plate. Therefore, the separation of solid particles and gas in the floating mud is realized, and the purpose of separating the floating mud is achieved. Compare because do not have the mud scrapping device and only can artifically clearly drag for the scheme of mud layer in order to improve the mud of floating among the prior art, the sedimentation tank that prevents that this scheme from floating mud and producing has simple structure, convenient to use, labour saving and time saving's characteristics. And compare in the adoption and spray the running water and break up mud, this scheme separation effect is good, and is unlikely to cause the play water muddy, ensures the advantage of sedimentation separation effect. To sum up, prevent that sedimentation tank that mud produced from floating simple structure, convenient to use, cost are lower, and can carry out the characteristics of low-cost transformation based on current sedimentation tank.

In an alternative embodiment, the eliminating unit includes a first reflecting plate and a second reflecting plate, and an included angle is formed between the first reflecting plate and the second reflecting plate;

the vent hole is formed in the joint of the first reflecting plate and the second reflecting plate.

In an alternative embodiment, the first and second reflective plates are flat plates such that a projection of the eliminating unit along a length direction of the plate is triangular.

In an alternative embodiment, a plurality of said ventilation holes are equally spaced.

In an alternative embodiment, a plurality of the elimination units may be arranged in one or more layers, with the plurality of elimination units in each layer being located in the same horizontal direction.

In an alternative embodiment, among the plurality of elimination units of each layer, there is a gap between adjacent elimination units.

In an alternative embodiment, the floating mud removing devices are arranged in multiple layers, and adjacent removing units are arranged in a staggered mode along the depth direction of the tank body.

In a second aspect, the present invention provides a water treatment system comprising the sedimentation tank for preventing the generation of sludge as set forth in any one of the above embodiments.

The utility model discloses beneficial effect includes, for example:

the utility model has the advantages of set up the mud remove device that floats in the sedimentation tank top, this mud remove device that floats comprises two-layer or multilayer parallel arrangement's triangle reflecting plate, and the triangle reflecting plate can effectively separate come-up mud solid particle and attach to the gas above that, makes come-up mud destabilization, subsides to the mud fill once more, and gas is discharged by reflecting plate top gas pocket, and liquid flows along the reflecting plate clearance. The utility model discloses a sedimentation tank can effectively block and float mud come-up to the cell body surface, avoids the aquatic suspended solid too high, also reduces the fortune dimension cost of artifical clearance float mud.

Drawings

In order to more clearly illustrate the technical solutions of the embodiments of the present invention, the drawings required for the embodiments will be briefly described below, it should be understood that the following drawings only illustrate some embodiments of the present invention, and therefore should not be considered as limiting the scope, and that those skilled in the art can also obtain other related drawings based on these drawings without inventive efforts.

Fig. 1 is a schematic structural view of a sedimentation tank for preventing floating mud according to a first embodiment of the present invention;

fig. 2 is a schematic structural diagram of a first embodiment of the present invention, illustrating a removing unit of a sedimentation tank for preventing floating mud;

fig. 3 is a partial schematic view of a removing unit of a sedimentation tank for preventing floating mud according to a first embodiment of the present invention;

fig. 4 is a schematic structural view of a floating mud removing apparatus for a sedimentation tank for preventing the generation of floating mud according to a first embodiment of the present invention;

fig. 5 is a schematic structural view of a sedimentation tank for preventing floating mud according to the second embodiment of the present invention.

Icon: 10-a sedimentation tank for preventing floating mud; 100-a tank body; 101-clear water area; 102-a settling zone; 110-a water inlet; 120-water outlet; 200-a mud bucket; 300-a floating mud removal device; 30-a cancellation unit; 31-a first end; 32-a second end; 33-a connecting means; 301-notches; 302-groove bottom; 310-a first reflective plate; 320-a second reflector plate; 330-a vent hole; 400-center tube.

Detailed Description

In order to make the objects, technical solutions and advantages of the embodiments of the present invention clearer, the embodiments of the present invention will be clearly and completely described below with reference to the accompanying drawings in the embodiments of the present invention, and it is obvious that the described embodiments are some, but not all, embodiments of the present invention. The components of embodiments of the present invention, as generally described and illustrated in the figures herein, may be arranged and designed in a wide variety of different configurations.

Thus, the following detailed description of the embodiments of the invention, as presented in the figures, is not intended to limit the scope of the invention, as claimed, but is merely representative of selected embodiments of the invention. Based on the embodiments in the present invention, all other embodiments obtained by a person skilled in the art without creative efforts belong to the protection scope of the present invention.

It should be noted that: like reference numbers and letters refer to like items in the following figures, and thus, once an item is defined in one figure, it need not be further defined and explained in subsequent figures.

In the description of the present invention, it should be noted that, if the directions or positional relationships indicated by the terms "up", "down", "inside", "outside", etc. appear based on the directions or positional relationships shown in the drawings, or the directions or positional relationships that the products of the present invention are usually placed when used, it is only for convenience of describing the present invention and simplifying the description, but not for indicating or implying that the indicated device or element must have a specific direction, be constructed and operated in a specific direction, and therefore, should not be construed as limiting the present invention.

Furthermore, the appearances of the terms "first," "second," and the like, if any, are used solely to distinguish one from another and are not to be construed as indicating or implying relative importance.

It should be noted that the features of the embodiments of the present invention may be combined with each other without conflict.

Example 1

Referring to fig. 1, fig. 1 shows a sedimentation tank 10 for preventing floating mud from being generated according to an embodiment of the present invention, and the sedimentation tank is a vertical flow sedimentation tank. Specifically, the sedimentation tank 10 for preventing the generation of the sludge includes a tank body 100, at least one hopper 200 (the vertical flow sedimentation tank of this embodiment has only one hopper 200), and a sludge eliminating device 300.

A water inlet 110 and a water outlet 120 are arranged on the tank body 100;

the mud bucket 200 is arranged at the bottom of the tank body 100;

the floating mud removing device 300 is arranged in the clear water area 101 of the pool water in the pool body 100;

the sludge eliminating apparatus 300 comprises a plurality of eliminating units 30, wherein the eliminating units 30 comprise two reflecting plates, and a notch 301 facing the tank body 100 and a groove bottom 302 far away from the notch 301 are formed; a plurality of through vents 330 are provided in the trough bottom 302.

The settling tank 10 for preventing the generation of floating sludge of the present embodiment has a floating sludge eliminating apparatus 300 having a plurality of eliminating units 30. Each abatement unit 30 comprises two reflective plates having a slot 301 and a trough bottom 302, with the slot 301 being towards the bottom of the cell body 100 of the settling tank and the vent holes 330 on the trough bottom 302 and trough bottom 302 being towards the top of the cell body 100 of the settling tank. When the floating type floating sludge eliminating device is used, floating sludge enters the eliminating unit 30 from the notch 301 in the floating process and collides with the wall of the eliminating unit 30, at the moment, gas attached to floating sludge particles in the floating sludge is separated from sludge particles, the sludge particles are settled again at the settling speed, and the gas overflows from a small hole at the top of the reflecting plate. Therefore, the separation of solid particles and gas in the floating mud is realized, and the purpose of separating the floating mud is achieved.

Compare because do not have the mud scraping device and only can artifically clear the scheme of dragging for the mud layer in order to improve the mud floating among the prior art, the sedimentation tank 10 that prevents that the mud floating from producing of this scheme has simple structure, convenient to use, labour saving and time saving's characteristics.

And compared with the method of spraying tap water to break up sludge, the method has good separation effect and is unlikely to cause effluent turbidity. In conclusion, the sedimentation tank 10 for preventing the floating mud from being generated has the characteristics of simple structure, convenient use, lower cost and low-cost transformation based on the existing sedimentation tank.

Further, fig. 2 shows a schematic view of the fitting of the cancellation unit 30. As can also be seen from the figure, in the present embodiment of the present invention, the eliminating unit 30 extends along the preset straight direction. The arrangement of the elimination units 30 extending along the predetermined straight line direction can simplify the structure, so that the elimination unit 300 is configured as a straight strip shape, and the strip shape structure can ensure that the flowing water can smoothly flow at the bottom 302 of the elimination unit 30, and the flowing water can also flow between the adjacent elimination units 30. The sedimentation treatment effect of the sedimentation tank is ensured while the treatment effect of the floating mud is ensured.

It will be appreciated that in other embodiments of the invention, the mud-removing device 300 may have other shapes, such as a wave or arc shape (e.g. forming a curved plate) of the removing unit 30, which extends in a wave or curve direction rather than in a straight line. As long as the eliminating unit 30 can separate solid particles and air bubbles in the sludge, it is not limited herein.

Further, the removing unit 30 extends through both sides in the length direction thereof. That is, both sides of the length direction (i.e., the preset linear direction) of the eliminating unit 30 are through structures, such an arrangement can ensure that the water flow can smoothly flow inside the eliminating unit 30, thereby improving the separation effect and the separation efficiency of the floating sludge, and simultaneously ensuring the efficiency of the sedimentation and separation of the sedimentation tank itself.

Specifically, referring to fig. 1, fig. 2 and fig. 3, it can be seen that in the present embodiment, the eliminating unit 30 includes a first reflective plate 310 and a second reflective plate 320, and an included angle is formed between the first reflective plate 310 and the second reflective plate 320; the vent holes 330 are opened at the connection of the first reflection plate 310 and the second reflection plate 320.

As can be seen from the figure, the first reflective plate 310 and the second reflective plate 320 have the same shape, structure and size. Specifically, the reflection plate (i.e., the first reflection plate 310 and/or the second reflection plate 320, the same applies hereinafter) is a rectangular plate. The long edge of one reflecting plate is aligned and butted and connected with the long edge of the other adjacent reflecting plate. And an included angle is formed between the two reflecting plates. Alternatively, in the present embodiment of the present invention, the first reflection plate 310 and the second reflection plate 320 are flat plates, so that the projection of the elimination unit 30 along the length direction of the plate thereof is triangular. Such a structure allows the eliminating unit 30 to have better structural stability and sludge particles to have a smooth descending passage, thereby ensuring the reliability and stability of the floating sludge separation process.

Further, in the present embodiment, an acute angle of the included angle is formed between the two reflective plates. That is, the included angle between the plate surfaces of the first reflection plate 310 and the second reflection plate 320 close to each other is an acute angle. Compared with two reflecting plates forming an obtuse angle, the reflecting plates can play a role of guiding particles to descend, for example, the particles which collide with the reflecting plates of the upper elimination unit 30 and descend along the plate surface when meeting the lower reflecting plate in the descending process, so that the upward speed cannot be obtained again. As can also be seen from fig. 3, the vent holes 330 are provided on the top connection line of the first reflection plate 310 and the second reflection plate 320.

Further, the plurality of vent holes 330 are arranged at equal intervals in the preset linear direction. The plurality of equally spaced vent holes 330 ensure the efficiency of discharging bubbles in the floating sludge, and are beneficial to ensuring the separation efficiency of the floating sludge.

It should be noted that the plurality of elimination units 30 may be arranged in one or more layers, and the plurality of elimination units 30 in each layer are located in the same horizontal direction. The multi-layer eliminating unit 30 can enhance the efficiency and capacity of the separation treatment of the floating sludge in the sedimentation tank, thereby ensuring that the sedimentation tank has better sedimentation separation effect.

Optionally, in this embodiment, two layers of elimination units 30 are disposed in the sedimentation tank. Further, the removing units 30 in each layer are arranged in parallel at equal intervals, and the intervals of the adjacent sludge removing devices 300 in each layer are the same. The spacing of each layer of abatement units 30 is also the same along the depth of the cell body 100.

That is, as shown in fig. 2, the reflection plate has opposite first and second ends 31 and 32 in a predetermined linear direction.

The first end 31 of the first reflection plate 310 is spaced from the first end 31 of the second reflection plate 320 of the adjacent elimination unit 30 by a distance d1, and the second end 32 of the first reflection plate 310 is spaced from the second end 32 of the second reflection plate 320 of the adjacent elimination unit 30 by a distance d2. In this embodiment, d1= d2, so that the eliminating unit 30 can uniformly cover the whole surface of the sedimentation tank, the sludge removing efficiency is higher, and the water flow is smoother and more stable.

It will be appreciated that in other embodiments of the invention, d1 ≠ d2, which may be d1< d2 or d1> d2.

As can also be seen from fig. 2 to 4, in the plurality of elimination units 30 of each layer, there is a gap between adjacent elimination units 30. Specifically, as shown in fig. 4, the plurality of removing units 30 of the sludge removing device 300 are all located at the same level to form the sludge removing device 300 of the same layer, and the removing units 30 in each layer are arranged in parallel; the number of the elimination units 30 is determined according to the size of the plane of the sedimentation tank and the size of the elimination unit; and each of the eliminating units 30 is connected to each other by a connecting means 33, thus forming the sludge eliminating device 300. During installation, the floating mud elimination assembly can be directly installed (welded) in the tank body 100. As can be seen from the figure, the gaps formed by adjacent elimination units 30 can allow water flow to flow upwards, so that the water flow drives the floating mud to flow upwards smoothly, and the floating mud collides with the elimination units 30 to form solid-gas separation. The separated bubbles move upward through the vent holes 330, and the separated solid particles can drop downward and smoothly drop into the hopper 200 along the inclined outer wall of the lower reflecting plate.

It is understood that, in other embodiments of the present invention, the floating mud removing device 300 with multiple layers, the floating mud removing assembly formed by combining the plurality of removing units 30 in each layer, may also be in a wave shape, as long as the removing units 30 can separate the solid and gas of the floating mud, which is merely an example and is not limited herein.

As can be seen from the figure, in the present embodiment of the present invention, the adjacent elimination units 30 are arranged in a staggered manner along the depth direction of the tank body 100. The staggered arrangement of the abatement units 30 enables a plurality of abatement units 30 to cooperate to effect multiple separate treatments of the sludge as it rises.

When in use, the mud-water mixed liquid enters the central pipe 400 from the water inlet 110 of the vertical flow sedimentation tank and flows into the sedimentation tank, and then mud-water separation is carried out in the sedimentation zone 102. Wherein the settled sludge enters the hopper 200, and the floating sludge particles destabilize after impacting the reflecting plate of the eliminating unit 30, obtain a downward speed, and settle to the hopper 200 again. At this time, the bubbles attached to the floating mud particles are separated from the particles under the impact and overflow along the air holes above the reflecting plate, and the clear liquid water flow overflows to the surface of the sedimentation tank along the gap of the reflecting plate and is discharged from the water outlet 120.

The floating mud eliminating device 300 of the sedimentation tank effectively separates mud, water and gas phases of floating mud, prevents the floating mud of the sedimentation tank and ensures the quality of effluent water.

The utility model provides a water treatment system, water treatment system include the sedimentation tank 10 that prevents the production of floating mud in any one of the aforesaid embodiment. Such a water treatment system has an excellent separation and precipitation effect, thereby ensuring the efficiency and quality of the overall water treatment.

Example 2

Referring to fig. 5, fig. 5 is a schematic view of another sedimentation tank 10 for preventing floating mud according to an embodiment of the present invention. This example is similar to example 1, except that the present sedimentation tank is of the horizontal flow sedimentation tank type.

Further, the sedimentation tank 10 for preventing the generation of floating mud includes a tank body 100 and two mud hoppers 200. Two mud buckets 200 are arranged side by side at the bottom of the tank body 100.

To sum up, the embodiment of the utility model provides a prevent sedimentation tank 10 and water treatment system that mud floats produced has following advantage at least:

the top of the clear water area of the sedimentation tank is provided with a floating mud removing device 300, the floating mud removing device 300 consists of two or more layers of parallel arranged removing units 30, the reflecting plate of the removing unit 30 can effectively separate floating mud solid particles and gas attached to the floating mud solid particles, the floating mud is destabilized and then is settled to the mud bucket 200 again, the gas is discharged from the air holes at the top of the reflecting plate, and the liquid flows along the gaps of the reflecting plate. The utility model discloses a sedimentation tank can effectively block the mud of floating upward to cell body 100 surfaces, avoids the aquatic suspended solid too high, also reduces the fortune dimension cost of artifical clearance mud of floating.

The above embodiments are only specific embodiments of the present invention, but the scope of the present invention is not limited thereto, and any changes or substitutions that can be easily conceived by those skilled in the art within the technical scope of the present invention should be covered by the scope of the present invention. Therefore, the protection scope of the present invention shall be subject to the protection scope of the claims.

Claims (8)

1. A sedimentation tank for preventing the generation of floating mud, comprising:

the pool body is provided with a water inlet and a water outlet;

the mud bucket is arranged at the bottom of the pool body;

the floating mud removing device is arranged in a clear water area in the pool body and comprises a plurality of removing units; the elimination unit comprises two reflecting plates which form a notch facing the tank body and a tank bottom far away from the notch; a plurality of through air holes are arranged on the groove bottom.

2. The sedimentation tank for preventing the generation of floating sludge as claimed in claim 1, wherein:

the eliminating unit comprises a first reflecting plate and a second reflecting plate, and an included angle is formed between the first reflecting plate and the second reflecting plate;

the vent hole is formed in the joint of the first reflecting plate and the second reflecting plate.

3. The sedimentation tank for preventing the generation of floating sludge as claimed in claim 2, wherein:

the first and second reflection plates are flat plates so that a projection of the elimination unit along a length direction of the plate is triangular.

4. The sedimentation tank for preventing the generation of floating sludge as claimed in claim 2, wherein:

a plurality of the vent holes are arranged at equal intervals.

5. The sedimentation tank for preventing the generation of floating sludge as claimed in claim 1, wherein:

the plurality of the elimination units may be arranged in one or more layers, and the plurality of the elimination units in each layer are located in the same horizontal direction.

6. The sedimentation tank for preventing the generation of floating sludge as claimed in claim 5, wherein:

in the plurality of elimination units of each layer, a gap is provided between adjacent elimination units.

7. The sedimentation tank for preventing the generation of floating sludge as claimed in claim 1, wherein:

the floating mud removing devices are arranged in a multilayer mode, and adjacent removing units are arranged in a staggered mode along the depth direction of the pool body.

8. A water treatment system, characterized by:

the water treatment system comprises the sedimentation tank for preventing the generation of floating mud according to any one of claims 1 to 7.

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