CN218951171U

CN218951171U - Power plant ash flushing wastewater treatment system

Info

Publication number: CN218951171U
Application number: CN202221845864.XU
Authority: CN
Inventors: 余文杰; 高振国; 周志强
Original assignee: Gaomi Lilang Mingde Environmental Protection Technology Co ltd
Current assignee: Gaomi Lilang Mingde Environmental Protection Technology Co ltd
Priority date: 2022-07-18
Filing date: 2022-07-18
Publication date: 2023-05-02
Anticipated expiration: 2032-07-18

Abstract

The utility model discloses a power plant ash flushing wastewater treatment system, which comprises an ash sedimentation tank, wherein a water inlet pipe is arranged at the upper part of the ash sedimentation tank, a descaling device is arranged on the inner wall of the water inlet pipe, the descaling device can prevent scaling on the inner wall of a pipeline, further corrosion and abrasion of the pipeline are avoided, the service life of the pipeline is prolonged, a coarse filtration device is arranged at a water inlet of the ash sedimentation tank, an ash sedimentation tank water outlet is arranged at the side part of the ash sedimentation tank, a fine filtration device is arranged at the water outlet of the ash sedimentation tank, the coarse filtration device and the fine filtration device can filter larger sundries and floating matters in ash flushing water, the water outlet of the ash sedimentation tank is connected with a flocculation tank, a neutralization tank, a metal reactor and a desalting tank, a plurality of planting plates capable of moving up and down are arranged in the desalting tank, the desalting mode is energy-saving and environment-friendly, the service life of the pipeline is prolonged, and the production cost is reduced.

Description

Power plant ash flushing wastewater treatment system

Technical Field

The utility model relates to a power plant ash flushing wastewater treatment system.

Background

The ash flushing water is one of main pollution sources of the thermal power plant, is water for flushing slag and ash discharged from a dust remover, is discharged after being settled in an ash field, and has main indexes exceeding the standard, such as pH value, floaters, suspended matters, salt content, fluorine and the like, and heavy metals, arsenic and the like in the individual power plants. Such waste water needs system treatment to discharge or recycle, and the floater or suspended solids of ash flushing water in prior art are not thoroughly cleaned, and the inner wall of the drainage pipeline in prior art can be scaled, and the general solution is that scale removal is carried out through a scale remover after scaling, and the mode has drawbacks, such as: the long-time scaling can lead to corrosion of the inner wall of the pipeline, and the service life of the pipeline is reduced. In addition, the prior art generally uses chemical reagents for desalination, and the method has high cost and strong pollution and is not practical.

Disclosure of Invention

Aiming at the problems existing in the prior art, the utility model provides a power plant ash flushing wastewater treatment system, which can treat ash flushing wastewater, prolong the service life of a pipeline and reduce the production cost.

The utility model is realized in such a way that the ash flushing wastewater treatment system of the power plant is structurally characterized in that: the device comprises a sedimentation tank, a detachable water inlet pipe communicated with an inner cavity of the sedimentation tank is arranged on the upper portion of the sedimentation tank, a descaling device is arranged on the inner wall of the water inlet pipe, a sedimentation tank water inlet communicated with the water inlet pipe is arranged on the upper portion of the sedimentation tank, a rough filtering device is arranged at the sedimentation tank water inlet, a sedimentation tank water outlet is arranged on the side portion of the sedimentation tank, a fine filtering device is arranged at the sedimentation tank water outlet, a flocculation tank is connected to the sedimentation tank water outlet, a neutralization tank is connected to the flocculation tank, a metal reactor is connected to the neutralization tank water outlet, a desalination tank is connected to the metal reactor water outlet, a plurality of planting plates capable of moving up and down are arranged in the desalination tank, and a fluorine remover is connected to the desalination tank water outlet.

Further preferred is the following scheme: the descaling device comprises a penetrating net arranged on the inner wall of the cavity, a plurality of penetrating micropores are uniformly distributed on the inner wall of the water inlet pipe, a two-way water pump is arranged on the side part of the water inlet pipe, and a water outlet of the two-way water pump is communicated with the cavity.

Further preferred is the following scheme: the rough filtering device comprises an opening part arranged at the side part of the ash settling tank, the opening part is connected with a U-shaped filter plate which corresponds to the water inlet of the ash settling tank up and down in a sealing sliding manner, the upper part of the U-shaped filter plate is contacted with the top of the ash settling tank, and a plurality of rough filtering holes are uniformly distributed at the bottom of the U-shaped filter plate.

Further preferred is the following scheme: the fine filtering device comprises an opening part arranged at the upper part of the ash settling tank, the opening part is in sealed sliding connection with a fine filter plate corresponding to the water outlet of the ash settling tank, and a plurality of fine filtering holes are uniformly distributed on the fine filter plate.

Further preferred is the following scheme: slide ways are symmetrically arranged on the inner wall of the desalting pond, pulleys which can be connected onto the slide ways in a sliding manner are symmetrically arranged on the two side parts of the planting plate, and salt absorbing plants are planted on the planting plate.

Further preferred is the following scheme: the middle part of planting board is equipped with the link, installs on the link and can stretch out the lifting handle of desalination pond.

Further preferred is the following scheme: a water pipe is connected between the water outlet of the ash settling tank and the flocculation tank, and the water pipe is obliquely arranged from top to bottom.

Compared with the prior art, the utility model has the following beneficial effects:

because the descaling device is arranged, the descaling agent enters the cavity and enters the inner wall of the water inlet pipe through the penetration net, and the descaling agent continuously penetrates and reacts with the scale, so that the scale on the inner wall can be cleaned in time, the descaling mode can avoid scale formation on the inner wall of the pipeline, corrosion and abrasion of the pipeline are avoided, and the service life of the pipeline is prolonged.

The coarse filtration device is arranged at the water inlet of the ash sedimentation tank, the coarse filtration device is a detachable U-shaped filter plate, the U-shaped filter plate can filter larger sundries, the U-shaped filter plate can be detached and cleaned, and the impact force of ash flushing water when entering the ash sedimentation tank can be buffered, so that water flow slowly flows in, and sundries precipitated in the ash sedimentation tank are prevented from being excited.

The fine filter device is arranged at the water outlet of the ash sedimentation tank, suspended matters in ash flushing water can be filtered through the fine filter plate when flowing out of the ash sedimentation tank, water flows into the next procedure through the fine filter holes, the suspended matters or the suspended matters are remained on the fine filter plate, and the fine filter plate can be taken out for cleaning or replacement after long-time filtration.

The sediment, after filtering, ash flushing water enters the desalting pond after flocculation, acid-base neutralization and heavy metal removal by the metal reactor, plants are planted on the planting plate during use, after a period of growth time, the planting plate is lifted out through the lifting handle, and the planting plate is replaced.

The desalinated ash flushing water is subjected to defluorination treatment and then is safely discharged, and the utility model has the advantages of simple structure, convenience for cleaning suspended matters in the ash flushing water, prolonged service life of a pipeline and reduction of production cost.

Drawings

FIG. 1 is a schematic diagram of the structure of the present utility model;

fig. 2 is a cross-sectional view taken along A-A in fig. 1.

Detailed Description

For a further understanding of the utility model, its features and advantages, reference is now made to the following examples, which are illustrated in the accompanying drawings.

The structure of the present utility model will be described in detail with reference to the accompanying drawings.

As shown in fig. 1-2, the ash flushing wastewater treatment system for a power plant provided by the embodiment of the utility model comprises an ash sedimentation tank 1, wherein a detachable water inlet pipe 11 communicated with the inner cavity of the ash sedimentation tank 1 is arranged at the upper part of the ash sedimentation tank 1, and the water inlet pipe 11 is connected with the ash sedimentation tank 1 through a flange in the embodiment. As shown in fig. 1, a scale removing device is arranged on the inner wall of the water inlet pipe 11, a cavity 14 is arranged on the pipe wall of the water inlet pipe 11 in this embodiment, the scale removing device comprises a permeable net 15 arranged on the opposite inner wall of the cavity 14, a plurality of permeable micropores 16 are uniformly distributed on the inner wall of the water inlet pipe 11, a bidirectional water pump 17 is arranged on the side part of the water inlet pipe 11, a water outlet of the bidirectional water pump 17 is communicated with the cavity 14, and a water inlet of the bidirectional water pump 17 is communicated with a scale remover containing box arranged on the side part. When the scale remover is used, the bidirectional water pump 17 is started, the scale remover enters the cavity 14 and enters the inner wall of the water inlet pipe 11 through the permeable net 15 and the permeable micropores 16, so that scale on the inner wall is cleaned, scale removal can be performed after the scale on the inner wall of the pipeline is avoided by the cleaning mode, corrosion and abrasion of the pipeline are avoided, and the service life of the pipeline is prolonged. When the ash flushing wastewater flows through the water inlet pipe 11, a small amount of sewage flows back into the cavity 14 through the permeation micropores 16 and the permeation net 15, so that the scale remover is diluted, and therefore the scale remover can be pumped out through the bidirectional water pump 17 after being stored in the cavity 14 for a long time, and a new scale remover is replaced.

As shown in fig. 1, an ash sedimentation tank water inlet 13 communicated with a water inlet pipe 11 is arranged at the upper part of the ash sedimentation tank 1, a coarse filtration device is arranged at the ash sedimentation tank water inlet 13, the coarse filtration device in the embodiment comprises an opening part arranged at the side part of the ash sedimentation tank 1, a U-shaped filter plate 18 corresponding to the ash sedimentation tank water inlet 13 is connected with the upper part of the U-shaped filter plate 18 in a sealing sliding manner, the upper part of the U-shaped filter plate 18 is contacted with the top of the ash sedimentation tank 1, sewage is prevented from directly flowing into the ash sedimentation tank 1, a plurality of coarse filtration holes 19 are uniformly distributed at the bottom of the U-shaped filter plate 18, when ash flushing water enters the ash sedimentation tank 1 through the ash sedimentation tank water inlet 13, firstly falls onto the U-shaped filter plate 18, so that larger impurities in the ash flushing water can be filtered on the U-shaped filter plate 18, water flows out of the coarse filtration holes 19, a large amount of impurities can be accumulated on the U-shaped filter plate 18 for a long time, and a great amount of impurities can be accumulated on the U-shaped filter plate 18 at this time, and the U-shaped filter plate 18 can be taken out for cleaning or replaced. In addition, the U-shaped filter plate 18 can buffer the impact force of the ash flushing water entering the ash sedimentation tank 1, so that the water flow slowly flows in, and sundries settled in the ash sedimentation tank 1 are prevented from being excited.

As shown in fig. 1, the side part of the ash deposition tank 1 is provided with an ash deposition tank water outlet 12, the ash deposition tank water outlet 12 is arranged at the upper part of the ash deposition tank 1, the ash deposition tank water outlet 12 is provided with a fine filtering device, the fine filtering device comprises an opening part arranged at the upper part of the ash deposition tank 1, the opening part is in sealed sliding connection with a fine filter plate 101 corresponding to the ash deposition tank water outlet 12, a plurality of fine filter holes 102 are uniformly distributed on the fine filter plate 101, smaller impurities in ash flushing water can be deposited at the bottom of the ash deposition tank 1, suspended matters in ash flushing water are difficult to deposit, and the suspended matters can not deposit, so when flowing out of the ash deposition tank 1, the suspended matters or the suspended matters can be filtered through the fine filter plate 101, the water flows into a lower channel procedure through the fine filter holes 102, the suspended matters are remained on the fine filter plate 101, and the fine filter plate 101 can be taken out for cleaning or replacement after long-time filtration.

As shown in fig. 1, the flocculation tank 2 is connected to the ash precipitation tank water outlet 12, a water pipe 109 is connected between the ash precipitation tank water outlet 12 and the flocculation tank 2, the water pipe 109 is obliquely arranged from top to bottom, and the precipitated clean water flows into the flocculation tank 2 more smoothly. And a flocculating agent is added into the flocculation tank 2 to filter the particles in the ash flushing water. The structure and working principle of the flocculation tank 2 in this embodiment are the prior art, and are not described here again

As shown in fig. 1, a water outlet of the flocculation tank 2 is connected with a neutralization tank 3, and the pH value of the neutralization tank 3 is adjusted according to the pH value of the ash flushing water, so as to neutralize the ash flushing water correspondingly. The water outlet of the neutralization tank 3 is connected with a metal reactor 4, and the metal reactor 4 can clean heavy metals in the ash water. In this embodiment, the structures and working principles of the neutralization tank 3 and the metal reactor 4 are all the prior art, and are not described herein.

As shown in fig. 1 and 2, a desalting tank 5 is connected to a water outlet of the metal reactor 4, a plurality of planting plates 51 capable of moving up and down are installed in the desalting tank 5, in this embodiment, a plurality of groups of slide ways 52 are symmetrically arranged on the inner wall of the desalting tank 5, pulleys capable of being slidingly connected to the slide ways 52 are symmetrically arranged on two side portions of each planting plate 51, a hanging ring 53 is arranged in the middle of each planting plate 51, and a lifting handle 54 capable of extending out of the desalting tank 5 is installed on the hanging ring 53. Salt-absorbing plants are planted on the planting plate 51, and in this embodiment, the salt-absorbing plants may be kelp or other seawater plants with higher salt absorption. When in use, plants are planted on the planting plate 51, after a period of growing time, the planting plate 51 is lifted up and taken out through the lifting handle 54, and the planting plate 51 is replaced, so that the desalination mode has strong environmental protection, the use of chemical agents is avoided, the cost is saved, and the planted plants can be reused.

As shown in fig. 1, a fluorine remover 6 is connected to the water outlet of the desalination tank 5, and the fluorine remover 6 can clean fluorine in the ash flushing water. The ash flushing water purified by a plurality of working procedures can be safely discharged.

It is noted that relational terms such as first and second, and the like are used solely to distinguish one entity or action from another entity or action without necessarily requiring or implying any actual such relationship or order between such entities or actions. Moreover, the terms "comprises," "comprising," or any other variation thereof, are intended to cover a non-exclusive inclusion, such that a process, method, article, or apparatus that comprises a list of elements does not include only those elements but may include other elements not expressly listed or inherent to such process, method, article, or apparatus.

Although embodiments of the present utility model have been shown and described, it will be understood by those skilled in the art that various changes, modifications, substitutions and alterations can be made therein without departing from the principles and spirit of the utility model, the scope of which is defined in the appended claims and their equivalents.

Claims

1. A power plant ash flushing wastewater treatment system is characterized in that: including sediment ash pond (1), sediment ash pond (1) upper portion install with its inner chamber intercommunication and detachable water inlet pipe (11), be equipped with scale removal device on the inner wall of water inlet pipe (11), sediment ash pond (1) upper portion be equipped with the sediment ash pond water inlet (13) of water inlet pipe (11) intercommunication, sediment ash pond water inlet (13) department is equipped with coarse filtration device, sediment ash pond (1) lateral part is equipped with sediment ash pond delivery port (12), sediment ash pond delivery port (12) department is equipped with fine filtration device, sediment ash pond delivery port (12) department is connected with flocculation tank (2), the delivery port department of flocculation tank (2) is connected with neutralization tank (3), and the delivery port department of neutralization tank (3) is connected with metal reactor (4), the delivery port department of metal reactor (4) is connected with desalination tank (5), install a plurality of planting boards (51) that can reciprocate in desalination tank (5), the delivery port department of desalination tank (5) is connected with fluorine removal ware (6).

2. The power plant ash flushing wastewater treatment system of claim 1 wherein: the descaling device comprises a penetration net (15) arranged on the opposite inner wall of the cavity (14), a plurality of penetration micropores (16) are uniformly distributed on the inner wall of the water inlet pipe (11), a bidirectional water pump (17) is arranged on the side part of the water inlet pipe (11), and a water outlet of the bidirectional water pump (17) is communicated with the cavity (14).

3. The power plant ash flushing wastewater treatment system of claim 1 wherein: the rough filtering device comprises an opening part arranged at the side part of the ash precipitation tank (1), the opening part is connected with a U-shaped filter plate (18) which corresponds to the water inlet (13) of the ash precipitation tank up and down in a sealing sliding manner, the upper part of the U-shaped filter plate (18) is contacted with the top of the ash precipitation tank (1), and a plurality of rough filtering holes (19) are uniformly distributed at the bottom of the U-shaped filter plate (18).

4. The power plant ash flushing wastewater treatment system of claim 2 wherein: the fine filtering device comprises an opening part arranged at the upper part of the ash settling tank (1), the opening part is connected with a fine filter plate (101) corresponding to the water outlet (12) of the ash settling tank in a sealing and sliding manner, and a plurality of fine filtering holes (102) are uniformly distributed on the fine filter plate (101).

5. A power plant ash flushing wastewater treatment system as set forth in claim 3, wherein: slide ways (52) are symmetrically arranged on the inner wall of the desalination pond (5), pulleys which can be connected to the slide ways (52) in a sliding mode are symmetrically arranged on two side portions of the planting plate (51), and salt absorbing plants are planted on the planting plate (51).

6. A power plant ash flushing wastewater treatment system as set forth in claim 3, wherein: the middle part of planting board (51) is equipped with link (53), installs on link (53) and can stretch out lifting handle (54) of desalination pond (5).

7. A power plant ash flushing wastewater treatment system as set forth in claim 3, wherein: a water pipe (109) is connected between the ash precipitation tank water outlet (12) and the flocculation tank (2), and the water pipe (109) is obliquely arranged from top to bottom.