CN210751501U - Papermaking wastewater treatment device - Google Patents

Abstract

The utility model relates to the technical field of papermaking wastewater treatment equipment, and discloses a papermaking wastewater treatment device, which comprises an overflow tank, a sewage tank and a waste residue tank which are sequentially arranged along a water flow path, wherein the top of the sewage tank is obliquely provided with a filter plate along the horizontal direction, the upper end of the filter plate is in transitional connection with the water outlet side of the overflow tank, and the lower end of the filter plate is in transitional connection with the feed side of the waste residue tank; fixedly connected with centers on the installation pipe of the circumference setting of filter between effluent water sump and the filter, the intercommunication has the outlet duct on the installation pipe and arranges the exhaust duct in the effluent water sump according to the air inlet towards the direction of filter, and the gas outlet intercommunication of outlet duct has the aspiration pump. The utility model has the advantages of it is following and effect: the sewage tank and the waste residue tank which are provided with the filter plates form a waste water filtering structure through the overflow tank, and an air exhaust pipeline, an air exhaust pump and the like are used for forming negative pressure, so that the separation of sewage and waste residues in waste water is promoted, and the filtering efficiency of the device is improved.

Description

Papermaking wastewater treatment device

Technical Field

The utility model relates to a technical field of papermaking waste water treatment equipment especially relates to a papermaking waste water treatment device.

Background

In a papermaking factory, a large amount of water is required to be used and discharged in the processes from pulping to papermaking, the discharged water is called papermaking wastewater, except that a part of papermaking white water in the wastewater participates in recycling, the redundant wastewater can be discharged after being treated to reach a sewage discharge standard, and therefore each papermaking factory is provided with a sewage treatment workshop or a sewage treatment plant. Most of wastewater treatment apparatuses only adopt a precipitation method, and cannot treat fiber pulp and sludge, so that the sewage treatment efficiency is reduced.

In order to improve the sewage treatment efficiency, the existing wastewater treatment device adopts a cloth filter process to concentrate filtration and precipitation in the same filter for completion, and part of waste residues and sewage in the wastewater are directly separated through filter cloth. The general process of the process is that a filter plate with microporous filter cloth is arranged on a water flow path, wastewater enters a filter tank and then passes through the filter plate, and sewage is separated from waste residues through micropores of the filter plate. Then the waste residue is intercepted on the outer side of the filter cloth by the filter cloth, and the filtered sewage is collected and discharged out of the filter tank through the filter plate arranged below the filter plate.

In the process, when the wastewater contacts the filter plate in the early stage, most of the wastewater directly passes through the filter cloth, but part of the wastewater is combined with the waste residue to form sludge. Therefore, it is necessary to stand for a while to wait for the portion of the sewage to be separated from the waste residue, but this also causes a decrease in the filtration efficiency of the wastewater treatment apparatus, and thus it is desired to improve.

SUMMERY OF THE UTILITY MODEL

The to-be-solved problem of the utility model is to the above-mentioned not enough that exists among the prior art and provide a papermaking effluent treatment plant that is favorable to improving filtration efficiency, it has solved the slower problem of sewage and waste residue separation among the prior art.

The above utility model discloses an above-mentioned utility model purpose can realize through following technical scheme:

a papermaking wastewater treatment device comprises an overflow tank, a sewage tank and a waste residue tank which are sequentially arranged along a water flow path, wherein a filter plate is obliquely arranged at the top of the sewage tank along the horizontal direction, the upper end of the filter plate is in transitional connection with the water outlet side of the overflow tank, and the lower end of the filter plate is in transitional connection with the material inlet side of the waste residue tank; the effluent water sump with fixedly connected with centers on between the filter the installation pipe of the circumference setting of filter, the intercommunication has the outlet duct on the installation pipe and according to the air inlet orientation the direction of filter arrange in air exhaust duct in the effluent water sump, the gas outlet intercommunication of outlet duct has the aspiration pump.

By adopting the technical scheme, in the actual use process, by continuously inputting the wastewater into the overflow tank, the wastewater flows out from the shorter water outlet side of the overflow tank, then the wastewater flows on the surface of the filter plate along the downward inclined direction, at the moment, the solid-liquid mixture in the wastewater is primarily filtered and separated by the filter plate, wherein the waste residue in the wastewater is intercepted on the upper surface of the filter plate, then the waste residue falls into the waste residue tank for collection, and the sewage in the wastewater directly falls into the sewage tank after being filtered; simultaneously, the air in the sewage pond is in proper order through bleed-off pipeline, installation pipe and outlet duct, is taken away by the aspiration pump at last, therefore the atmospheric pressure in the sewage pond will be less than atmospheric pressure to force sewage to move towards the sewage pond, and force sewage and waste residue separation, the waste residue that drops to in the waste residue pond at last is similar to likepowder, is favorable to improving the treatment effeciency of device.

The utility model discloses further set up to: the air exhaust pipelines are arranged side by side along the direction of a water flow path from the overflow tank to the waste residue tank.

Through adopting above-mentioned technical scheme, bleed towards the filter on the rivers route through a plurality of bleed ducts, further promote the separation of the waste residue in the filtration waste residue and the waste water under the solid-liquid mixed state, be favorable to improving the treatment effeciency of device.

The utility model discloses further set up to: the air exhaust pipeline comprises a U-shaped air inlet main pipe, a plurality of air inlet branch pipes which are arranged side by side along a straight line and communicated with the air inlet main pipe, two positioning pipes which are arranged side by side and communicated with the installation pipe, and threaded sleeves which are connected with the air inlet main pipe and the positioning pipes, wherein the air inlets of the air inlet branch pipes face the filter plate.

By adopting the technical scheme, the plurality of air inlet branch pipes can uniformly exhaust air towards each area of the filter plate, so that the condition that the difference of local waste water filtering conditions is large is avoided; in addition, the air inlet main pipe can be conveniently taken down through rotating the threaded sleeve to the air inlet main pipe or the positioning pipe, so that the air inlet main pipe is convenient to disassemble and assemble.

The utility model discloses further set up to: the air inlet cover of air inlet branch pipe is equipped with hemispherical fender cover, keep off the cover with be the clearance setting between the air inlet of air inlet branch pipe, and be provided with a plurality of support bars.

Through adopting above-mentioned technical scheme, keep off the cover and pass through the support bar to be fixed on air intake branch, be favorable to avoiding sewage to be pumped to in the recent bronchus.

The utility model discloses further set up to: a plurality of micropores are arranged on the filter plate in a penetrating mode, and the axis lines of the micropores are horizontal.

Through adopting above-mentioned technical scheme, set up the micropore in horizontally poroid, this opening direction neither is perpendicular with water flow path, is not parallel with vertical direction again, is favorable to avoiding the waste residue to block up the micropore.

To sum up, the utility model discloses a beneficial technological effect does: the sewage tank and the waste residue tank which are provided with the filter plates form a waste water filtering structure through the overflow tank, and an air exhaust pipeline, an air exhaust pump and the like are used for forming negative pressure, so that the separation of sewage and waste residues in waste water is promoted, and the filtering efficiency of the device is improved.

Drawings

FIG. 1 is a schematic structural view of a papermaking wastewater treatment device of the present invention.

Fig. 2 is a schematic sectional view of the filter plate of the present invention.

Fig. 3 is a schematic structural view of the air pumping mechanism of the present invention.

Fig. 4 is a partially enlarged schematic view of the air exhaust duct of the present invention.

In the figure, 1, an overflow tank; 2. a sewage tank; 3. a waste slag tank; 4. a filter plate; 41. micropores; 5. an air extraction mechanism; 51. installing a pipe; 52. an air outlet pipe; 53. an air extraction pipeline; 531. an intake manifold; 532. an intake branch pipe; 533. a shield; 534. a supporting strip; 535. a positioning tube; 536. a threaded sleeve; 54. an air pump.

Detailed Description

The technical solution of the present invention will be clearly and completely described below with reference to the specific embodiments. It is obvious that the described embodiments are only some of the embodiments of the present invention, and not all of them. Based on the embodiments of the present invention, all other embodiments obtained by a person of ordinary skill in the art without creative efforts belong to the protection scope of the present invention.

Referring to fig. 1, the papermaking wastewater treatment device disclosed by the present invention comprises an overflow tank 1, a sewage tank 2 and a waste residue tank 3, which are arranged in sequence along a water flow path, wherein a filter plate 4 is arranged on the top of the sewage tank 2 in an inclined manner along a horizontal direction; a first partition wall is formed between the overflow tank 1 and the sewage tank 2, and a second partition wall is formed between the sewage tank 2 and the waste residue tank 3. Wherein, the height of the first partition wall is lower than that of the other side walls of the overflow tank 1, and the height of the second partition wall is lower than that of the other side walls of the waste slag tank 3. The upper end of filter 4 and overflow tank 1's first partition wall transitional coupling, lower extreme and the second partition wall transitional coupling of waste residue pond 3 to make the waste water in the overflow tank 1 can flow to filter 4 through the top of first partition wall, the waste residue on the filter 4 can fall to waste residue pond 3 in through the top of second partition wall simultaneously. In addition, an air exhaust mechanism 5 for extracting air is arranged in the sewage tank 2, so that negative pressure is formed in the sewage tank 2, and separation of sewage and waste residues in the wastewater is promoted.

Referring to fig. 2, a plurality of micropores 41 which are uniformly arranged and through which sewage passes are formed through the filter plate 4, and the axial line of the micropores 41 is horizontal. The micropores 41 are arranged in a horizontal hole shape, and the opening direction is not perpendicular to the water flow path, but not parallel to the vertical direction, so that the micropores 41 are prevented from being blocked by waste residues.

Referring to fig. 3, the air exhausting mechanism 5 includes a mounting pipe 51 fixed between the wastewater tank 2 and the filter plate 4 and disposed around the circumference of the filter plate 4, an air outlet pipe 52 disposed on the upper surface of the mounting pipe 51, an air exhausting duct 53 disposed on the lower surface of the mounting pipe 51, and an air exhausting pump 54 disposed outside the wastewater tank 2 and communicated with the air outlet of the air outlet pipe 52. The air in the wastewater tank 2 passes through the air suction pipe 53, the installation pipe 51, and the air outlet pipe 52 in sequence, and is finally sucked away by the air suction pump 54, so that the air pressure in the wastewater tank 2 is lower than the atmospheric pressure, thereby forcing the wastewater to move toward the wastewater tank 2 and the wastewater and the waste residues to be separated.

Referring to fig. 4, a plurality of the air extraction pipes 53 are arranged side by side along the direction of the water flow path from the overflow tank 1 to the waste slag tank 3. The air extraction pipeline 53 comprises a U-shaped air inlet main pipe 531, a plurality of air inlet branch pipes 532 which are arranged side by side along a straight line and are communicated with the air inlet main pipe 531, two positioning pipes 535 which are arranged side by side and are communicated with the mounting pipe 51, and screw sleeves 536 which are in threaded connection with the air inlet main pipe 535 and the outside of the positioning pipes 531; the two ends of the air inlet main pipe 531 are both communicated with the mounting pipe 51, and the air inlet of the air inlet branch pipe 532 faces the filter plate 4. The plurality of air inlet branch pipes 532 uniformly exhaust air towards each area of the filter plate 4, so that the condition that the difference of local waste water filtering conditions is large is avoided; in addition, the air inlet main pipe 531 can be conveniently taken down by rotating the screw sleeve 536 to the air inlet main pipe 531 or the positioning pipe 535, so that the air inlet main pipe 531 can be conveniently disassembled and assembled.

In order to prevent sewage from being sucked into the intake branch pipe 532, the intake cover of the intake branch pipe 532 is provided with a hemispherical blocking cover 533, and a plurality of support bars 534 are arranged between the blocking cover 533 and the intake port of the intake branch pipe 532 in a clearance manner and along the circumferential direction of the intake branch pipe 532. The air inlet branch pipe 532 can draw air through the gaps between the support bars 534 and between the air inlet of the air inlet branch pipe 532 and the blocking cover 533, and meanwhile, the air inlet of the air inlet branch pipe 532 is prevented from directly facing sewage, and a large amount of sewage is prevented from being drawn.

The implementation principle of the embodiment is as follows: by continuously feeding waste water into the overflow basin 1, the waste water flows out through the lower outlet side of the overflow basin 1, and then flows in an obliquely downward direction over the surface of the filter plate 4. At the moment, the air exhaust mechanism 5 works, so that the air pressure in the sewage pool 2 is lower than the atmospheric pressure, and the preliminary filtration and separation of a solid-liquid mixture in the wastewater through the filter plate 4 are accelerated. Wherein the waste residue in the waste water is held back at the upper surface of filter 4, and the waste residue that drops to in waste residue pond 3 is similar to likepowder, then the waste residue drops to and collects in waste residue pond 3, and the sewage in the waste water directly falls to in effluent water sump 2 after filtering.

Claims (5)

1. A papermaking wastewater treatment device is characterized in that: the sewage treatment device comprises an overflow pool (1), a sewage pool (2) and a waste slag pool (3) which are sequentially arranged along a water flow path, wherein a filter plate (4) is obliquely arranged at the top of the sewage pool (2) along the horizontal direction, the upper end of the filter plate (4) is in transitional connection with the water outlet side of the overflow pool (1), and the lower end of the filter plate is in transitional connection with the material inlet side of the waste slag pool (3); effluent water sump (2) with fixedly connected with centers on between filter (4) installation pipe (51) that the circumference of filter (4) set up, the intercommunication has outlet duct (52) and presses the air inlet orientation on installation pipe (51) the direction of filter (4) arrange in bleed-off line (53) in effluent water sump (2), the gas outlet intercommunication of outlet duct (52) has aspiration pump (54).

2. The papermaking wastewater treatment device according to claim 1, characterized in that: the air extraction pipelines (53) are arranged side by side along the direction of a water flow path from the overflow tank (1) to the waste slag tank (3).

3. The papermaking wastewater treatment device according to claim 2, characterized in that: the air exhaust pipeline (53) comprises a U-shaped air inlet main pipe (531), a plurality of air inlet branch pipes (532) which are arranged side by side along a straight line and communicated with the air inlet main pipe (531), two positioning pipes (535) which are arranged side by side and communicated with the installation pipe (51), and threaded sleeves (536) which are connected with the air inlet main pipe (531) and the outer parts of the positioning pipes (535), wherein air inlets of the air inlet branch pipes (532) face towards the filter plate (4).

4. The papermaking wastewater treatment device according to claim 3, characterized in that: the air inlet cover of air inlet branch pipe (532) is equipped with hemispherical fender cover (533), keep off cover (533) with be the clearance setting between the air inlet of air inlet branch pipe (532), and be provided with a plurality of support bars (534).

5. The papermaking wastewater treatment device according to claim 1, characterized in that: the filter plate (4) is provided with a plurality of micropores (41) in a penetrating mode, and the axial lead of each micropore (41) is horizontal.

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