CN-224212553-U - Unpowered self-purification composite filter material tail water advanced treatment device

CN224212553UCN 224212553 UCN224212553 UCN 224212553UCN-224212553-U

Abstract

The utility model discloses an unpowered self-purifying composite filter material tail water advanced treatment device, and belongs to the technical field of sewage treatment. The device comprises a water inlet buffer tank, a drop aeration tank, an artificial wetland and a water outlet well which are sequentially communicated according to a downward stepped structure, wherein a composite filter material reaction tank is further arranged between the drop aeration tank and the artificial wetland, and a composite filter material for adsorbing and degrading pollutants is filled in the composite filter material reaction tank; the drop aeration tank is communicated with the upper part of the composite filter material reaction tank through a water inlet pipeline, and the bottom of the composite filter material reaction tank is communicated with the constructed wetland through a water outlet pipeline. The utility model adds the composite filter material unit between the drop aeration unit and the wetland unit in the traditional unpowered treatment device, solves the problem of blockage caused by the arrangement of the conventional filter material at the bottom of the constructed wetland, and can further improve the integral water purifying capacity of the device by adjusting the types of the composite filter material and the like.

Inventors

Fan Taixiang
ZHAO XILIN
QIN QIWEN
XU FENG

Assignees

四川锦美环保股份有限公司

Dates

Publication Date: 20260508
Application Date: 20260402

Claims (10)

1. The unpowered self-purifying composite filter material tail water advanced treatment device comprises a water inlet buffer tank (1), a drop aeration tank (2), an artificial wetland (4) and a water outlet well (5) which are sequentially communicated according to a downward stepped structure, and is characterized in that a composite filter material reaction tank (3) is further arranged between the drop aeration tank (2) and the artificial wetland (4), a composite filter material (31) for adsorbing and degrading pollutants is arranged in the composite filter material reaction tank (3), the drop aeration tank (2) is communicated with the upper part of the composite filter material reaction tank (3) through a water inlet pipeline (26), and the bottom of the composite filter material reaction tank (3) is communicated with the artificial wetland (4) through a water outlet pipeline (27).
2. The unpowered self-purifying composite filter material tail water advanced treatment device according to claim 1, further comprising a sludge discharging system, a plurality of siphon branch pipes (22) arranged at intervals at the bottom of the composite filter material reaction tank (3), and a siphon main pipe (21) communicated with each siphon branch pipe (22), wherein a plurality of sludge sucking holes (23) are formed in the pipe wall of each siphon branch pipe (22), the siphon main pipe (21) extends out of the composite filter material reaction tank (3) from bottom to top, an inverted U-shaped water seal bent pipe (24) is communicated with the water outlet end of the siphon main pipe (21), and the water outlet liquid level of the inverted U-shaped water seal bent pipe (24) is lower than the working liquid level in the composite filter material reaction tank (3).
3. The unpowered self-purifying composite filter material tail water advanced treatment device according to claim 2, wherein the siphon main pipe (21) comprises a first main pipe (211) arranged at the bottom of the composite filter material reaction tank (3) and a second main pipe (212) vertically communicated with the first main pipe (211), a plurality of siphon branch pipes (22) are respectively vertically communicated with the first main pipe (211), and one end, far away from the first main pipe (211), of the second main pipe (212) extends out of the composite filter material reaction tank (3) and is communicated with the inverted U-shaped water seal bent pipe (24).
4. The unpowered self-purifying composite filter material tail water advanced treatment device according to claim 2, wherein a floating ball liquid level valve (25) is arranged on the inverted U-shaped water seal bent pipe (24).
5. The unpowered self-purifying composite filter material tail water advanced treatment device according to claim 1, wherein a guide plate (13) is arranged in the composite filter material reaction tank (3), the guide plate (13) is embedded into the composite filter material (31), a water inlet end of the guide plate (13) is fixed on the side wall of the composite filter material reaction tank (3), and water flows through a water outlet end of the guide plate (13) and flows into the water outlet pipeline (27).
6. The unpowered self-purifying composite filter material tail water advanced treatment device according to claim 5, wherein the guide plates (13) comprise a first guide plate (131), a second guide plate (132) and a third guide plate (133) which are sequentially arranged at intervals from top to bottom, the side walls of the composite filter material reaction tank (3) comprise a water inlet side wall (28) and a water outlet side wall (29) which are oppositely arranged, the water outlet of the water inlet pipeline (26) is formed in the water inlet side wall (28), the water inlet of the water outlet pipeline (27) is formed in the water outlet side wall (29), the first guide plate (131) and the third guide plate (133) are both fixed on the water inlet side wall (28), and the second guide plate (132) is fixed on the water outlet side wall (29).
7. The unpowered self-purifying composite filter material tail water advanced treatment device of claim 1, wherein the composite filter material (31) is sequentially provided with a water distribution layer (6), an adsorption layer (7), a filter layer (8), a support layer (9) and a support layer (10) from top to bottom, the filter material of the water distribution layer (6) is gravel, the filter material of the adsorption layer (7) is biochar particles, the filter material of the filter layer (8) is zeolite particles, the filter material of the support layer (9) is ceramic particles, the filter material of the support layer (10) is gravel, and the filter material layers are separated by a permeable geotechnical cloth (30).
8. The unpowered self-purifying composite filter material tail water advanced treatment device according to claim 1 is characterized in that a filtering grid (18) is arranged in the water inlet buffer tank (1), and aeration grid plates (12) are arranged on the surfaces of the water fall steps (11) of the water fall aeration tank (2) which are contacted with water flow.
9. The unpowered self-purifying composite filter material tail water advanced treatment device according to claim 1, wherein the water outlet pipeline (27) is communicated with the bottom of the constructed wetland (4), and the water outlet well (5) is communicated with the upper part of the constructed wetland (4) through a wetland pipeline (32).
10. The unpowered self-purifying composite filter material tail water advanced treatment device according to claim 9, wherein the constructed wetland (4) is sequentially provided with a planting soil layer (14), a coarse sand transition layer (15) and a gravel drainage layer (16) from top to bottom, the water outlet pipeline (27) is communicated with the gravel drainage layer (16), the wetland pipeline (32) is communicated with the planting soil layer (14), and purified water plants (17) are planted on the planting soil layer (14).

Description

Unpowered self-purification composite filter material tail water advanced treatment device Technical Field The utility model belongs to the technical field of sewage treatment, and particularly relates to an unpowered self-purifying composite filter material tail water advanced treatment device. Background With the promotion of rural domestic sewage treatment work, various unpowered or micro-dynamic sewage treatment devices are widely applied. However, in actual operation, it is found that due to the reasons of large fluctuation of rural sewage water quantity and water quality, limited management and maintenance capability and the like, many outstanding problems still exist in many tail waters after conventional biochemical treatment, not only the key water quality indexes such as effluent COD, ammonia nitrogen, total phosphorus and the like cannot stably reach the first-level A emission standard, but also the existing advanced treatment equipment mostly depends on electric driving, the embarrassment of difficulty in electric charge allocation is very easy to face in rural areas, and in addition, the situation of blockage, failure and the like is very easy to occur due to the lack of professional technicians for carrying out daily management and maintenance, meanwhile, the traditional advanced treatment process is complex in flow, and the operation cost is also directly high, so that the long-acting operation and maintenance requirements are difficult to adapt. The patent with the application number of 202320211450.X discloses a sloping field unpowered constructed wetland sewage treatment device, which solves the problem of ecological treatment of urban or rural sewage through a multistage treatment pool, a drop aeration table, a multistage constructed wetland and a water outlet well which are arranged in a stepped structure. Although the patent also mentions that unpowered water purification is realized through a stepped structure, in the technology, the drop aeration table is directly connected with the artificial wetland, sewage directly enters the artificial wetland without purification, large-particle sediment can be directly caused to block the artificial wetland, chemical harmful components contained in the sewage also directly enter the artificial wetland to cause the deactivation of purified water plants, and finally, the artificial wetland is disabled, so that the tail water treatment effect is greatly reduced. Meanwhile, although a sewage disposal backflushing pipeline is arranged in the device, the pipeline can realize sewage disposal and filter material cleaning effects after external power is applied, and is not in line with the original purpose of unpowered tail water treatment. In summary, although the technology of realizing unpowered treatment of tail water through a hillside stepped design has been proposed in the prior art, the problems of difficult maintenance, blockage, failure and the like may occur after the treatment device is used for a long time, and the tail water cannot reach the standard by using an artificial wetland alone, especially when treating low-concentration and difficult-to-degrade tail water, the ideal purification effect is difficult to achieve by the conventional method, and an effective unpowered advanced treatment means is still lacking at present. Therefore, a need exists for a power-free, maintenance-free treatment device capable of deeply purifying tail water, which ensures that the effluent stably reaches the first-level A standard. Disclosure of utility model The utility model aims to overcome the defects of the prior art and provides an unpowered self-purifying composite filter material tail water advanced treatment device. The aim of the utility model is realized by the following technical scheme: The unpowered self-purifying composite filter material tail water advanced treatment device comprises a water inlet buffer tank, a drop aeration tank, an artificial wetland and a water outlet well which are sequentially communicated according to a downward stepped structure, wherein a composite filter material reaction tank is further arranged between the drop aeration tank and the artificial wetland, a composite filter material for adsorbing and degrading pollutants is filled in the composite filter material reaction tank, the drop aeration tank is communicated with the upper part of the composite filter material reaction tank through a water inlet pipeline, and the bottom of the composite filter material reaction tank is communicated with the artificial wetland through a water outlet pipeline. On the basis of the existing slope unpowered constructed wetland sewage treatment device, the composite filter material reaction tank is additionally arranged between the drop aeration tank and the constructed wetland, so that the filtering and purifying effects on sewage are further enhanced, partial silt and harmful substances are stopped by the composite filter materia