CN214763531U

CN214763531U - Filter tank and sewage treatment system

Info

Publication number: CN214763531U
Application number: CN202120207749.9U
Authority: CN
Inventors: 吴振华; 姜玉寿; 蔡高文
Original assignee: Suzhou Xingong Environment Engineering Technology Co ltd
Current assignee: Suzhou Xingong Environment Engineering Technology Co ltd
Priority date: 2021-01-26
Filing date: 2021-01-26
Publication date: 2021-11-19
Anticipated expiration: 2031-01-26

Abstract

The utility model discloses a filter tank and sewage treatment system, wherein filter tank is including the jar body that has import and export, its lower part is back taper portion, the import is through linking up the pipe and connecting the lower water drum, the water-locator is connected to the lower water drum lower extreme, the water-locator is buried underground in the filter material, the top of filter material is less than the export, jar internal trachea and the filter material back flow of still being provided with, the axis of tracheal gas outlet and the parallel lower extreme that just is higher than the filter material back flow of inner wall in the adverse pyramid portion, the axis of filter material back flow is parallel or coaxial and its lower extreme of the jar body press close to the bottom of the jar body, three phase separator is connected to the upper end of filter material back flow, the solid discharge end of three phase separator is connected the filter material and is sunk the pipe down, the lower extreme that the filter material sunk the pipe is less than export, the collecting tank is connected to three phase separator's leakage fluid dram. This scheme can wash when normal filtration uses, and work efficiency is high, can avoid the problem that the filter material hardens effectively, only needs one set of equipment just can satisfy the operation requirement, is favorable to reducing equipment cost.

Description

Filter tank and sewage treatment system

Technical Field

The utility model belongs to the technical field of the environmental protection equipment and specifically relates to filter tank and sewage treatment system.

Background

A quartz sand filter, known as a shallow medium filter, is a high-efficiency filtering device which utilizes quartz sand as a filtering medium, filters water with high turbidity through granular or non-granular quartz sand with a certain thickness under a certain pressure, effectively intercepts and removes suspended matters, organic matters, colloidal particles, microorganisms, chlorine, odor, partial heavy metal ions and the like in the water, and finally achieves the effects of reducing the water turbidity and purifying the water quality.

The quartz sand filter tank used in the current sewage treatment generally has a back flushing function, and the back flushing positive flushing frequency can be set according to the pollution blockage situation, such as the structure disclosed by the application number 202010702138.1, and the back flushing is carried out by stirring and filling compressed air.

However, the disadvantages of this structure are:

when filtering the jar when the backwash, it can stop to filter to lead to water, need wait the backwash just can begin to lead to water after the towards procedure is accomplished, so can be equipped with two and filter jar one and use one and be equipped with mostly to can use 5~6 automatic valve, inefficiency, equipment structure are complicated, and the cost is higher.

SUMMERY OF THE UTILITY MODEL

The utility model aims at solving the problems in the prior art and providing a filtering tank and a sewage treatment system.

The purpose of the utility model is realized through the following technical scheme:

the filtering tank comprises a tank body, the tank body is provided with an inlet and an outlet, the lower part of the tank body is an inverted cone, the inlet is connected with a water discharging barrel through a connecting pipe, the lower end of the lower water cylinder is connected with a water distributor, the water distributor is embedded in a filter material in the tank body, the top of the filter material is lower than the outlet, the tank body is also provided with an air pipe and a filter material return pipe, the axis of the air outlet of the air pipe is parallel to the inner wall of the inverted cone part and is higher than the lower end of the filter material return pipe, the axial line of the filter material return pipe is parallel to or coaxial with the axial line of the tank body, the lower end of the filter material return pipe is close to the bottom of the tank body, the upper end of the filter material return pipe is connected with a three-phase separator positioned above the outlet, the solid discharge end of the three-phase separator is connected with a filter material sinking pipe, the lower end of the filter material sinking pipe is lower than the outlet, and a liquid outlet of the three-phase separator is connected with a liquid collecting tank.

Preferably, in the filtering tank, an effluent weir is arranged in the tank body, the top of a side plate of the effluent weir is higher than the outlet, and the bottom plate of the effluent weir is lower than the outlet.

Preferably, in the filtering tank, an isolation hood is arranged below the water distributor, and the lower end of the isolation hood is close to the lower end of the air pipe.

Preferably, in the filter tank, the filter material comprises quartz sand of at least two specifications.

Preferably, in the filter tank, the number of the air pipes is 2-8, and the air pipes are distributed at equal intervals.

Preferably, in the filter tank, the lower end of the filter material return pipe is coaxially provided with a bell mouth.

Preferably, in the filter tank, the filter material return pipe is coaxial with the tank body.

A sewage treatment system comprising any of the filtration tanks described above.

Preferably, in the sewage treatment system, the liquid collecting tank is connected with the waste water collecting tank through a return pipeline.

The utility model discloses technical scheme's advantage mainly embodies:

this scheme is through setting up the trachea, filter material back flow and three-phase separator, carry compressed gas through the trachea and wash and carry the filter material back flow of bottom to sink into the filter tank once more after the three-phase separator separates in the filter material back flow, can wash when normal filtration uses, compare traditional sand filtration jar, work efficiency is high, and, the washing can continuously go on, can avoid the problem that the filter material hardens effectively, only need one set of equipment just can satisfy the operation requirement simultaneously, be favorable to reducing equipment cost.

The gas pipe and the arrangement mode of the filter material return pipe can effectively improve the utilization rate of compressed gas supplied by each gas pipe and ensure the reliability of filter material return. The combination of the bell mouth can improve the backflow efficiency of the filter material.

The design of cage can be separated upper and lower layer filter material effectively, avoids the lower floor to have the filter material of a large amount of pollutants to influence the filtration efficiency and the quality of the relatively clean filter material in upper strata, is favorable to improving filtration quality.

The waste liquid after this scheme filters jar separation is got back to and is carried out circulating filtration once more in the waste water collecting pit, and whole system does not have waste water to discharge outside the system.

Drawings

Fig. 1 is a schematic view of a first embodiment of a canister of the present invention;

FIG. 2 is a schematic view of a second embodiment of a canister of the present invention;

fig. 3 is a schematic diagram of the system of the present invention.

Detailed Description

Objects, advantages and features of the present invention will be illustrated and explained by the following non-limiting description of preferred embodiments. These embodiments are merely exemplary embodiments for applying the technical solutions of the present invention, and all technical solutions formed by adopting equivalent substitutions or equivalent transformations fall within the scope of the present invention.

In the description of the embodiments, it should be noted that the terms "center", "upper", "lower", "left", "right", "front", "rear", "vertical", "horizontal", "inner", "outer", and the like indicate orientations or positional relationships based on the orientations or positional relationships shown in the drawings, and are only for convenience of description and simplicity of description, but do not indicate or imply that the devices or elements referred to must have a specific orientation, be constructed in a specific orientation, and be operated, and thus, should not be construed as limiting the present invention. Furthermore, the terms "first," "second," and "third" are used for descriptive purposes only and are not to be construed as indicating or implying relative importance. In the description of the embodiment, the operator is used as a reference, and the direction close to the operator is a proximal end, and the direction away from the operator is a distal end.

The filtering tank disclosed by the present invention is explained below with reference to the accompanying drawings, as shown in fig. 1, it includes a tank body 1, the tank body 1 may be of various possible tank structures, for example, it may be made of stainless steel, and includes a column portion 11 and an inverted cone portion 12 located below the column portion 11, an inlet 13 and an outlet 14 are formed above a side wall of the column portion 11, the inlet 13 and the outlet 14 are located at two opposite sides of the tank body, and the outlet 14 is higher than the inlet 13, and connecting

flanges

2 and 3 are respectively arranged at outer sides thereof, a waste discharge port 15 is formed at a lower end side portion of the inverted cone portion 12, and the inverted cone portion 12 is arranged on a supporting leg 16.

As shown in fig. 1, the inlet 13 is connected to a lower water drum 5 through an adapter tube 4, the lower end of the lower water drum 5 is connected to a water distributor 6, the water distributor 6 includes 8 water distribution pipes 61 which are uniformly dispersed from the center to the periphery, the water distributor 6 is embedded in a filter material 9 in the tank body 1, and the top of the filter material 9 is lower than the outlet 14. An air pipe 10 and a filter material return pipe 20 are further arranged in the tank body 1, the upper end of the air pipe 10 is connected with a compressed gas supply pipeline (not shown in the figure) and fixed on the inner wall of the tank body 1, the air pipe 10 comprises a vertical pipe and a bent pipe which are integrated and matched with the inner wall of the tank body 1 in shape, and the axis of the air outlet of the air pipe 10 is parallel to the inner wall of the inverted cone part 12 and is higher than the lower end of the filter material return pipe 20. The axial line of the filter material return pipe 20 is parallel to or coaxial with the axial line of the tank body 1, the lower end of the filter material return pipe is close to the bottom 15 of the tank body 1, the upper end of the filter material return pipe 20 is connected with the three-phase separator 30 positioned above the outlet, the solid discharge end of the three-phase separator 30 is connected with the filter material sinking pipe 40, the lower end of the filter material sinking pipe 40 is lower than the outlet, preferably lower than the inlet 13, and the liquid discharge port of the three-phase separator 30 is connected with the liquid collecting tank 50.

When the filter material is in work, sewage is introduced into the tank body 1 by the pump, flows out uniformly from the top to the bottom through the water distributor 6 through the water discharge cylinder 5, and flows out from the outlet 14 after being filtered by the filter material 9, so that the filtering process is completed. When backwashing is needed, compressed air is guided into the bottom of the tank body from the air pipes 10 on the two sides of the tank body to wash the filter layer, meanwhile, airflow drives the filter material to enter the filter material return pipe 20 and enter the three-phase separator 30, the three-phase separator 30 separates the filter material, water and gas, the separated filter material falls from the filter material sedimentation pipe 40, the separated water enters the liquid collecting tank 50, and the separated gas is discharged.

Further, the filter material 9 may be made of different materials according to different requirements, for example, the filter material may be activated carbon or quartz sand, and more preferably, the filter material 9 includes at least two kinds of quartz sand with different specifications, and the filtering precision is between 2mm and 10 mm.

In addition, in order to ensure uniform water outlet and avoid short flow, as shown in fig. 1 and fig. 2, an outlet weir 60 is arranged in the tank 1, the top of a side plate 601 of the outlet weir 60 is higher than the outlet, a bottom plate 602 is lower than the outlet, and the outlet weir 60 is welded on the inner wall of the tank 1.

The number of the air pipes 10 is 2-8, preferably 2, 4, 6 or 8, the air pipes are distributed at equal intervals, and the filter material return pipe 20 is coaxial with the tank body 1, so that compressed air conveyed by each air pipe can blow filter materials into the filter material return pipe 20 under the balanced action during subsequent air blowing and backwashing, the utilization efficiency of the compressed air in each air pipe is improved, and reliable return of the filter materials is guaranteed. Preferably, as shown in fig. 1 and fig. 2, the lower end of the filter material return pipe 20 is coaxially provided with a bell mouth 21, so that the filter material can enter the filter material return pipe 20 conveniently. Meanwhile, the filter material return pipe 20 may be coaxial with the drain cylinder 5, and at this time, the filter material return pipe 20 needs to pass through the bottom plate and the top plate of the drain cylinder 5. Of course, in other embodiments, the launch cylinder 5 may be offset from the filter material return conduit 20, i.e., the launch cylinder 5 is offset from the axis of the tank.

As shown in fig. 2, in order to avoid back-streaming of the filtered contaminants in the lower layer and influence on the filtering effect of the filtering material in the upper layer, a shielding cover 7 is disposed below the water distributor 6, the shielding cover 7 is conical and can be coaxially fixed at the bottom of the water distributor 6 or coaxially fixed on the outer wall of the filtering material return pipe 20, and the lower end of the shielding cover 7 is adjacent to the lower end of the air pipe 10.

The three-phase separator 30 may be fixed to the top of the tank 1 by a bracket, or a top cover (not shown) may be further disposed above the cylindrical portion 11 of the tank, and the three-phase separator 30 is disposed on the top cover.

The utility model also discloses a sewage treatment system, including foretell filtration jar, as shown in figure 3, it is including the waste water collecting tank 100, PH equalizing basin 200, coagulating basin 300, flocculation tank 400, sedimentation tank 500, intermediate pool 600, filtration jar 700 and the clear water equalizing basin 800 that connect gradually, the waste water collecting tank is connected through backflow pipeline 900 respectively to the outlet of the collecting tank of filtration jar 700 and clear water equalizing basin.

And, as shown in fig. 3, the mud discharging port of the sedimentation tank 500 is connected with a mud concentration tank 1000 through a pipeline with a mud pump, which is used for sludge concentration, wherein the mud pump is arranged, which is connected with a screw-type dehydrator 2000 through a mud discharging pipeline, the screw-type dehydrator 2000 is used for sludge dehydration, and the waste water collecting tank 1000 is connected with the mud concentration tank 1000 and the liquid discharging end of the screw-type dehydrator 2000.

The utility model has a plurality of implementation modes, and all technical schemes formed by adopting equivalent transformation or equivalent transformation all fall within the protection scope of the utility model.

Claims

1. The filter tank comprises a tank body, wherein the tank body is provided with an inlet and an outlet, the lower part of the tank body is an inverted cone, the inlet is connected with a lower water cylinder through a connecting pipe, the lower end of the lower water cylinder is connected with a water distributor, the water distributor is buried in a filter material in the tank body, and the top of the filter material is lower than the outlet, which is characterized in that: still be provided with trachea and filter material back flow in the jar body, the axis of tracheal gas outlet with the inner wall of the inverted cone portion is parallel and is higher than the lower extreme of filter material back flow, the axis of filter material back flow with the axis of the jar body is parallel or coaxial and its lower extreme presses close to the bottom of the jar body, the upper end connection of filter material back flow is located the three-phase separator of export top, the solid discharge end of three-phase separator is connected filter material and is sunk the pipe, the lower extreme of filter material sunk the pipe is less than the export, the collecting tank is connected to the leakage fluid dram of three-phase separator.

2. A filter canister as claimed in claim 1, wherein: an effluent weir is arranged in the tank body, the top of a side plate of the effluent weir is higher than the outlet, and a bottom plate of the effluent weir is lower than the outlet.

3. A filter canister as claimed in claim 1, wherein: and an isolation cover is arranged below the water distributor, and the lower end of the isolation cover is close to the lower end of the air pipe.

4. A filter canister as claimed in claim 1, wherein: the filter material comprises quartz sand with at least two specifications.

5. A filter canister as claimed in claim 1, wherein: the number of the air pipes is 2-8, and the air pipes are distributed at equal intervals.

6. A filter canister as claimed in claim 1, wherein: the lower end of the filter material return pipe is coaxially provided with a horn mouth.

7. A canister as claimed in any one of claims 1 to 6, wherein: the filter material return pipe is coaxial with the tank body.

8. Sewage treatment system, its characterized in that: comprising a filter canister according to any of claims 1-7.

9. The wastewater treatment system according to claim 8, wherein: the liquid collecting tank is connected with the wastewater collecting tank through a return pipeline.