CN215209039U - Sewage pretreatment device and estuary sewage treatment system - Google Patents

Abstract

The utility model provides a sewage pretreatment device and estuary sewage treatment system, wherein sewage pretreatment device includes: the device comprises a pretreatment tank body and a slag removal unit arranged at the top of the pretreatment tank body, wherein the slag removal unit comprises a water inlet grid and a slag extractor arranged on the water inlet grid, and a slag removal assembly is arranged at the lower part of the slag extractor; the internal portion of preliminary treatment jar is provided with mixed unit, mixed unit is in including setting up the dive agitator of preliminary treatment jar body bottom, the lateral part of dive agitator is provided with the vortex baffle that is used for making sewage vortex when the stirring mix. Through the grid of intaking that sets up on the preliminary treatment grid, can intercept the solid impurity in the muddy drainage water body, effectively avoid the grid of intaking to appear silting up, carry sediment machine and arrange sediment subassembly through setting up on the grid of intaking, can realize arranging sediment automatically, effectively avoided artifical clear dragging for to the bars sediment.

Description

Sewage pretreatment device and estuary sewage treatment system

Technical Field

The utility model relates to a sewage treatment field, concretely relates to sewage pretreatment device and estuary sewage treatment system.

Background

The urban black and odorous water body remediation is important for improving urban human environment, the problems of rain and sewage mixed connection, hidden discharge port, unstable water quality and water quantity and the like exist in the discharge port of the river basin, and the main pollution sources of the sewage at the discharge port of the river are sewage which is not completely intercepted, construction wastewater, initial rainwater and the like.

The effect of separating rain and sewage and cleaning the source is slowly displayed at the present stage, the sewage treatment capacities of old cities and new cities are different, the overflow pollution regulation and storage capacity in rainy seasons is seriously insufficient, the mixed flow sewage treatment capacity in rainy seasons is deficient, and the like, so that the pollution of discharge port water is serious, and the safety of environmental water is directly influenced.

When river mouth sewage is treated, solid impurities are complex due to mixed drainage of water, the sewage is easy to block in the pretreatment process, the manual dredging difficulty is high, and the conventional sewage pretreatment device is single in function and cannot effectively disperse and mix the sewage in the pretreatment process.

SUMMERY OF THE UTILITY MODEL

An object of the utility model is to provide a sewage pretreatment device can make the automatic swift current of the solid impurity row that the interception comes down, and can realize sewage misce bene in the preliminary treatment.

The utility model provides a sewage pretreatment device, include: the device comprises a pretreatment tank body and a slag removal unit arranged at the top of the pretreatment tank body, wherein the slag removal unit comprises a water inlet grid and a slag extractor arranged on the water inlet grid, and a slag removal assembly is arranged at the lower part of the slag extractor;

the internal portion of preliminary treatment jar is provided with mixed unit, mixed unit is in including setting up the dive agitator of preliminary treatment jar body bottom, the lateral part of dive agitator is provided with the vortex baffle that is used for making sewage vortex when the stirring mix.

Further, the top of the pretreatment tank body is provided with a grid channel, the slag removal unit is installed on the grid channel, the two sides of the water inlet grid are respectively provided with a water inlet and a water outlet of the slag removal unit, and the water inlet and the water outlet are both arranged at the bottom of the grid channel.

Further, the grid canal is connected with a water inlet pipe for introducing sewage into the deslagging unit, and at least one part of the water inlet pipe extends into the pretreatment tank body and is vertically connected with the water inlet.

Further, the water outlet is connected with a water outlet pipe of the deslagging unit, and the water outlet pipe comprises a straight pipe section vertically connected with the water outlet and used for directly discharging the sewage after deslagging into the pretreatment tank body through the straight pipe section.

Further, the top of carrying the sediment machine is provided with the discharge gate, arrange the sediment subassembly including setting up arrange sediment spiral and connection in discharge gate lower part arrange the sediment pipe on the sediment spiral.

Further, arrange the sediment spiral including connecing the sediment hopper and arrange the sediment mouth, connect the sediment hopper setting to be in under the discharge gate, arrange the sediment mouth through the swift current sediment groove with arrange the sediment union coupling.

Furthermore, the submersible stirrer comprises two submersible stirrers which are oppositely arranged on two sides of the deslagging unit.

Further, the internal portion of preliminary treatment jar is provided with and is used for the installation the support of dive agitator, the vortex baffle is connected on the support.

Furthermore, the turbulence baffle comprises two turbulence baffles, wherein each turbulence baffle is vertically arranged between the support and the pretreatment tank body, and the two turbulence baffles are arranged in the same diameter direction of the pretreatment tank body.

The utility model also provides a estuary sewage treatment system of including above-mentioned sewage pretreatment device.

The beneficial effects of the utility model mainly lie in: through the grid of intaking that sets up on the preliminary treatment grid, can intercept the solid impurity in the muddy drainage water body, effectively avoid the grid of intaking to appear silting up, carry sediment machine and arrange sediment subassembly through setting up on the grid of intaking, can realize arranging sediment automatically, effectively avoided artifical clear dragging for to the bars sediment.

Through set up the dive agitator in the pretreatment tank body, can stir the sewage that gets into in the pretreatment unit, combine to set up the vortex baffle in dive agitator lateral part, carry out the vortex when can making sewage obtain the stirring, avoided the excessive whirl of fluid, make the sewage dispersion in the pretreatment tank mix effectively to keep good even dispersibility, do benefit to the biochemical treatment in the later stage.

Drawings

In order to more clearly illustrate the technical solutions of the embodiments of the present invention, the drawings that are required to be used in 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 for those skilled in the art, other related drawings can be obtained according to the drawings without inventive efforts.

Fig. 1 is a schematic side view of a sewage pretreatment apparatus according to the present invention;

fig. 2 is a schematic view of the overlooking structure of the sewage pretreatment device of the present invention.

In the figure:

1-pretreating a tank body;

2-grid channel; 21-a water inlet grille; 22-a water inlet; 23-a water outlet; 24-a water inlet pipe; 25-a water outlet pipe;

3-slag extracting machine; 31-a discharge hole;

4, deslagging screw; 41-a slag receiving hopper; 42-a slag discharge port; 43-slag chute; 44-a slag discharge pipe;

5-a submersible stirrer;

6-a scaffold;

7-turbulence baffle.

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 present invention, presented in the accompanying drawings, 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 work 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 the terms "center", "upper", "lower", "left", "right", "vertical", "horizontal", "inner", "outer", and the like indicate the position or positional relationship based on the position or positional relationship shown in the drawings, or the position or positional relationship which is usually placed when the product of the present invention is used, and are only for convenience of description and simplification of the description, but do not indicate or imply that the device or element referred to must have a specific position, be constructed and operated in a specific orientation, and thus, should not be construed as limiting the present invention. Furthermore, the terms "first," "second," "third," and the like are used solely to distinguish one from another and are not to be construed as indicating or implying relative importance.

Furthermore, the terms "horizontal", "vertical", "overhang" and the like do not imply that the components are required to be absolutely horizontal or overhang, but may be slightly inclined. For example, "horizontal" merely means that the direction is more horizontal than "vertical" and does not mean that the structure must be perfectly horizontal, but may be slightly inclined.

In the description of the present invention, it should also be noted that, unless otherwise explicitly specified or limited, the terms "disposed," "mounted," "connected," and "connected" are to be construed broadly, e.g., as meaning either a fixed connection, a removable connection, or an integral connection; can be mechanically or electrically connected; they may be connected directly or indirectly through intervening media, or they may be interconnected between two elements. The specific meaning of the above terms in the present invention can be understood in specific cases to those skilled in the art.

Some embodiments of the present invention will be described in detail below with reference to the accompanying drawings. The embodiments described below and the features of the embodiments can be combined with each other without conflict.

First embodiment

Referring to fig. 1-2, the present invention provides a sewage pretreatment device, including: the device comprises a pretreatment tank body 1 and a slag removal unit arranged at the top of the pretreatment tank body 1, wherein the slag removal unit comprises a water inlet grid 21 and a slag removal machine 3 arranged on the water inlet grid 21, and a slag removal assembly is arranged at the lower part of the slag removal machine 3;

the inside mixed unit that is provided with of pretreatment tank body 1, mixed unit is in including setting up the dive agitator 5 of pretreatment tank body 1 bottom, the lateral part of dive agitator 5 is provided with and is used for making sewage vortex mixed when the stirring vortex baffle 7.

The utility model provides a sewage pretreatment device mainly is applied to the preliminary treatment of river drain discharge waste water before carrying out biochemical treatment, and waste water process the utility model discloses well sewage pretreatment device's preliminary treatment back is arranged to further biochemical treatment of going on in low reaches.

In the existing sewage pretreatment device, particularly for the sewage discharged into a river channel from a sewage discharge outlet of the river channel, as the received sewage is mixed and discharged from different sewages, the water inlet grille 21 is very easy to be silted up in the pretreatment process, so that the difficulty of dredging operation is high, and the manual dredging operation amount is large. In addition, the existing sewage pretreatment device can only realize interception and filtration of solid impurities and can not effectively mix sewage from different sources.

Through set up slag lifting machine 3 on the grid 21 of intaking, can in time clear away the solid impurity that the grid 21 of intaking intercepted down to discharge from the slagging-off unit through setting up the sediment subassembly of carrying 3 lower parts of sediment machine, reduced the stifled risk of silting up of grid 21 of intaking, and reduced the clearance degree of difficulty to grid 21 of intaking, through carrying 3 promotion to solid impurity of sediment machine to and arrange the outer row of sediment subassembly, effectively reduced the clear work load of dragging for of operating personnel.

The submersible stirrer 5 arranged at the bottom of the pretreatment tank body 1 can stir the sewage after slag blocking and filtering in the pretreatment tank body 1, so that the sewage from different sources can be mixed in the pretreatment tank body 1. Set up the vortex baffle 7 at 5 lateral parts of dive agitator, can make sewage constitute the state of vortex on vortex baffle 7 when stirring the whirl, effectively improve the homogeneity of mixing.

In one embodiment, the deslagging unit is specifically installed on a grid channel 2, the grid channel 2 is arranged at the top of the pretreatment tank body 1, a water inlet 22 and a water outlet 23 of the deslagging unit are respectively arranged at two sides of a water inlet grid 21, and the water inlet 22 and the water outlet 23 are both arranged at the bottom of the grid channel 2, so that the water inlet direction and the water outlet direction of the deslagging unit are both in a vertical inlet and outlet mode.

In the form that sewage vertically passes in and out of the bottom of the grating channel 2, solid impurities can enter the grating channel 2 or be discharged to the pretreatment tank body 1 from the grating channel 2 through scouring in the vertical direction, and compared with the horizontal flow of sewage, the risk that the solid impurities block the water inlet 22 and the water outlet 23 is reduced.

In this embodiment, the inlet water of the sewage pretreatment device is introduced into the deslagging unit through the inlet pipe 24 connected to the grid channel 2, and at least a part of the inlet pipe 24 extends into the pretreatment tank body 1 and is vertically connected with the inlet 22 at the bottom of the grid channel 2 in order to keep the inlet pipe 24 connected with the inlet 22 in the vertical direction. Through the sewage is led into the grid channel 2 instead of being baffled into the grid channel 2 in the pretreatment tank body 1, the filtering and slag blocking of the sewage led into by the water inlet grid 21 are effectively ensured, and the possibility that large impurities enter the pretreatment tank body 1 is fundamentally avoided.

The water outlet pipe 25 of the deslagging unit is connected to the water outlet 23 at the bottom of the grid channel 2, the water outlet pipe 25 comprises a straight pipe section vertically connected with the water outlet 23, the straight pipe section extends in the vertical direction, preferably, the extending tail end of the water outlet pipe 25 extends below the liquid level of the sewage in the pretreatment tank body 1, and the sewage after deslagging can be directly discharged into the pretreatment tank body 1 through the water outlet pipe 25 in the form of the straight pipe section. The water outlet pipe 25 extending below the liquid level reduces the generation of foam during water outlet, can reduce the oxygen content in the water body, and creates conditions for the pretreatment tank body 1 to form an anaerobic treatment environment of sewage. In practical operation, the sewage after deslagging can be subjected to primary anaerobic degradation biochemical treatment in the pretreatment tank body 1 by culturing anaerobic microorganisms in the pretreatment tank body 1.

In another embodiment, a discharge hole 31 for lifting and discharging the intercepted solid impurities is arranged at the top of the slag extractor 3, and the slag discharging assembly comprises a slag discharging screw 4 arranged at the lower part of the discharge hole 31 and a slag discharging pipe 44 connected to the slag discharging screw 4. Through arranging sediment spiral 4, can carry the solid impurity at 3 tops of sediment machines to row sediment pipe 44, arrange sediment spiral 4 and carry the solid impurity in-process, can also play the rubbing effect to solid particle, effectively reduced the siltation of solid impurity in row sediment pipe 44.

Specifically, sediment spiral 4 connects sediment hopper 41 to set up under discharge gate 31 including connecing sediment hopper 41 and row of slag hole 42, is used for receiving the solid impurity that carries sediment machine 3 and promote from water grid 21 to discharge through row of slag hole 42 of sediment spiral 4, arrange and be connected through swift current slag chute 43 between sediment hole 42 and the row of slag pipe 44, can make the solid impurity that the process of arranging in the slag hole 42 after sediment spiral 4 rubs smoothly to row of slag pipe 44, improved the smoothness nature of sediment process.

In one of the preferred embodiments, the submersible agitator 5 in the pretreatment tank 1 comprises two, oppositely disposed, deslagging units. Through the submersible mixer 5 that sets up relatively, can stir the sewage in the preliminary treatment jar body 1 effectively.

The submersible agitator 5 in the pretreatment tank 1 specifically includes a housing, specifically an open housing, including an open mouth in an open form, and an impeller mounted in the housing. The impeller is installed in the uncovered opening, and based on submersible agitator 5's relative setting, two uncovered opening's orientation is crisscross relatively, is provided with certain crisscross contained angle between two orientations, can make sewage constitute good stirring state, and can flow in the preliminary treatment jar body 1 along anticlockwise whirl direction in the stirring.

In order to enhance the mixing effect of the sewage in the stirring process, a turbulence baffle 7 is also arranged at the position of the submersible stirrer 5. Specifically, a bracket 6 for mounting the submersible stirrer 5 is arranged inside the pretreatment tank body 1, and the turbulence baffle 7 is mounted on the bracket 6.

The vortex baffle 7 in this embodiment includes two, and every vortex baffle 7 links up in the whole height of the pretreatment tank body 1 from top to bottom, and it specifically sets up between the inner wall of the support 6 and the pretreatment tank body 1, and vortex baffle 7 installs on the radial direction of the pretreatment tank body 1, can make the sewage in the whirl under the passive striking of vortex baffle 7 through this kind of mode of setting, constitutes the vortex state, effectively makes the stirring of sewage mix more evenly. Based on the radial installation of the vortex baffle 7 along the pretreatment tank body 1, two vortex baffles 7 are preferably arranged on the same diameter direction of the pretreatment tank body 1, so that the sewage in the pretreatment tank body 1 can be further uniformly dispersed, and the anaerobic biochemical treatment is combined, thereby effectively improving the treatment efficiency of the sewage in the early stage.

Second embodiment

The utility model also provides a estuary sewage treatment system mainly adopts anaerobism good oxygen to add sedimentation treatment process and carries out the black and odorous water body of estuary and administer, including above-mentioned sewage pretreatment device, sewage biochemical pond, sedimentation tank, dissolve gas air supporting device and sludge thickening tank.

The wastewater is lifted to a slag removal unit at the top of the wastewater pretreatment device in a wastewater lifting pump station through a lifting pump, solid impurities with larger volume in the wastewater are intercepted by a water inlet grating 21 and then enter the pretreatment tank body 1 for anaerobic biochemical treatment, the wastewater after anoxic treatment enters a wastewater biochemical tank for aerobic biochemical treatment, and the treated produced water enters a sedimentation tank for solid-liquid separation.

Waste water after biochemical treatment gets into the sedimentation tank and carries out solid-liquid separation through the swash plate, and the supernatant dissolves gas air supporting device through the rear end and handles the back and discharge up to standard through standardizing the drain, sedimentation tank bottom mud, dissolve the mud that gas air supporting device produced and the utility model provides a arrange the sediment and merge the back and go into the sludge thickening pond, then carry out thorough separation to solid-liquid through sludge dewatering system, the mud cake after the separation transports the output outward, and the product water that obtains carries out internal circulation through the pipeline and carries out the processing to sewage lifting pump station owing to a large amount of sewage in addition.

The equipment in each unit of the estuary sewage treatment system in the embodiment can be manufactured in a prefabricated form, and then assembled and installed on site in a modularized form, so that the method can adapt to the rapid construction requirement of an estuary emergency project, has the characteristics of modularized construction, short construction period, small occupied area and flexible assembly, can improve the treatment working condition of estuary sewage to the greatest extent, improves the biochemical treatment effect, and enables the sewage to reach the standard to be discharged.

The above description is only a preferred embodiment of the present invention and is not intended to limit the present invention, and various modifications and changes may be made by those skilled in the art. Any modification, equivalent replacement, or improvement made within the spirit and principle of the present invention should be included in the protection scope of the present invention.

Claims (10)

1. A sewage pretreatment device, comprising: the device comprises a pretreatment tank body and a slag removal unit arranged at the top of the pretreatment tank body, wherein the slag removal unit comprises a water inlet grid and a slag extractor arranged on the water inlet grid, and a slag removal assembly is arranged at the lower part of the slag extractor;

the internal portion of preliminary treatment jar is provided with mixed unit, mixed unit is in including setting up the dive agitator of the internal bottom of preliminary treatment jar, the lateral part of dive agitator is provided with the vortex baffle.

2. The sewage pretreatment device according to claim 1, wherein a grid channel is arranged at the top of the pretreatment tank body, the deslagging unit is mounted on the grid channel, a water inlet and a water outlet of the deslagging unit are respectively arranged at two sides of the water inlet grid, and the water inlet and the water outlet are both arranged at the bottom of the grid channel.

3. The wastewater pretreatment device according to claim 2, wherein a water inlet pipe for introducing wastewater into the deslagging unit is connected to the grid channel, and at least a portion of the water inlet pipe extends into the pretreatment tank and is vertically connected to the water inlet.

4. The sewage pretreatment device according to claim 2, wherein the water outlet is connected with a water outlet pipe of the deslagging unit, and the water outlet pipe comprises a straight pipe section vertically connected with the water outlet, so that the deslagging sewage is directly discharged into the pretreatment tank body through the straight pipe section.

5. The sewage pretreatment device according to claim 1, wherein a discharge hole is formed in the top of the slag extractor, and the slag discharging assembly comprises a slag discharging screw arranged at the lower part of the discharge hole and a slag discharging pipe connected to the slag discharging screw.

6. The sewage pretreatment device of claim 5, wherein the slag discharge screw comprises a slag receiving hopper and a slag discharge port, the slag receiving hopper is arranged right below the discharge port, and the slag discharge port is connected with the slag discharge pipe through a slag chute.

7. The sewage pretreatment apparatus of any one of claims 1 to 6, wherein the submersible mixer comprises two, symmetrically disposed at both sides of the slag removal unit.

8. The wastewater pretreatment device of claim 7, wherein a bracket for mounting the submersible mixer is arranged inside the pretreatment tank, and the baffle is connected to the bracket.

9. The sewage pretreatment device of claim 8, wherein the baffle comprises two baffles, each baffle is vertically installed between the support and the pretreatment tank body, and the two baffles are arranged in the same diameter direction of the pretreatment tank body.

10. A estuary sewage treatment system comprising the sewage pretreatment apparatus of any one of claims 1 to 9.

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