CN215365102U

CN215365102U - Water-spraying type aerobic-anoxic constructed wetland

Info

Publication number: CN215365102U
Application number: CN202120857681.9U
Authority: CN
Inventors: 王伟亚; 侯红勋; 司家济; 吴可; 邱国勤; 鲍韬
Original assignee: Cecep Guozhen Environmental Protection Technology Co ltd
Current assignee: Cecep Guozhen Environmental Protection Technology Co ltd
Priority date: 2021-04-22
Filing date: 2021-04-22
Publication date: 2021-12-31
Anticipated expiration: 2031-04-22

Abstract

The utility model discloses a water-spraying aerobic-anoxic constructed wetland, which comprises a pond body and a water inlet system arranged on one side of the pond body, wherein a plant treatment area, an aerobic treatment area, an anoxic treatment area, a water collecting area and a sludge collecting and discharging area are sequentially arranged in the pond body from top to bottom, the water inlet system comprises a water spraying and distributing system and an anaerobic water distributing system, the water spraying and distributing system comprises a water spraying and distributing branch pipe arranged in the plant treatment area, the water spraying and distributing branch pipe is connected with at least one water spraying pipe, the water spraying pipe extends upwards to the upper part of the plant treatment area, the anaerobic water distributing system comprises an anaerobic water distributing branch pipe positioned at the lower part of the aerobic treatment area, the application can automatically oxygenate in the water spraying and distributing process, sewage is fully contacted with air, plants can be irrigated, and the constructed wetland aerobic treatment and the plant growth are facilitated, the wetland treatment capacity is improved, sewage enters water in a segmented mode, a nitrifying liquid backflow facility does not need to be arranged, and energy required by internal circulation is saved.

Description

Water-spraying type aerobic-anoxic constructed wetland

Technical Field

The utility model relates to the technical field of water treatment, in particular to a water-spraying type aerobic and anoxic artificial wetland.

Background

The artificial wetland technology is a sewage treatment technology, sewage is orderly put into a simulated wetland which is constructed and controlled to operate artificially, and the sewage is purified by utilizing the physical, chemical and biological actions of soil, plants, fillers, microorganisms and the like. The artificial wetland has wide application in rural domestic sewage, tail water of urban sewage treatment plants, industrial wastewater, agricultural non-point source pollution and river and lake treatment, and has the characteristics of low price, low energy consumption, good use effect and the like. The artificial wetland is divided into three basic types of surface flow, horizontal subsurface flow and vertical subsurface flow according to the water flow form. The vertical subsurface flow constructed wetland is in a wetland form that the water surface is below the surface filler, and sewage vertically flows through the constructed wetland from the water inlet end of the wetland to the water outlet end of the wetland.

Compared with surface flow and horizontal subsurface flow, the vertical subsurface flow constructed wetland has better purification effect, but the treatment capacity also has a space for improvement. Most of the existing vertical subsurface flow constructed wetlands adopt a water inlet mode, the consumption of dissolved oxygen in the wetlands is high, the sewage treatment is insufficient, and the nitrogen and phosphorus removal efficiency is low.

SUMMERY OF THE UTILITY MODEL

The utility model aims to provide a water-spraying type aerobic and anoxic artificial wetland to solve the problems in the background technology.

In order to achieve the purpose, the utility model provides the following technical scheme:

the utility model provides a water spray formula aerobic and anoxic constructed wetland, include the cell body and set up in the water intake system of cell body one side, plant treatment area, aerobic treatment district, anoxic treatment area, water-collecting zone, collection mud sludge discharge area have set gradually from top to bottom in the cell body, the water intake system includes water spray water distribution system, anaerobism water distribution system, water spray water distribution system including set up in water spray water distribution branch pipe in the plant treatment area, water spray water distribution branch pipe connection has at least one spray pipe, the spray pipe upwards extends to plant treatment area top, anaerobism water distribution system is including being located anaerobism water distribution branch pipe of aerobic treatment district lower part.

As a further scheme of the utility model: and a water outlet channel of the pretreatment process is arranged on one side of the pool body, a water pump is arranged in the water outlet channel, and the water spraying and distributing system is communicated with the water pump.

As a further scheme of the utility model: the plant treatment area is internally provided with a first filler, the particle size of the first filler is about 5-10mm, the thickness of the first filler is 20-50cm, and aquatic plants 10 are planted in the plant treatment area.

As a further scheme of the utility model: the spray pipe is equipped with a plurality ofly, the spray pipe upper end is equipped with the shower nozzle, the shower nozzle is located the aquatic plant top.

As a further scheme of the utility model: the aerobic treatment zone is internally provided with a second filler, the anoxic treatment zone is internally provided with a third filler, the particle size of the second filler is 2-5mm, the thickness of the second filler is 150-200cm, the particle size of the third filler is 10-15mm, and the thickness of the third filler is 30-50 cm.

As a further scheme of the utility model: the inside of the water collecting area is provided with a water collecting pipe, the water collecting pipe is a perforated pipe, the upper end of the water collecting pipe is provided with a vent pipe, and the vent pipe is positioned outside the pool body.

As a further scheme of the utility model: the sludge collecting and discharging area is internally provided with a sludge collecting groove, the sludge collecting groove is internally provided with a sludge discharging pipe, and the sludge discharging pipe is a perforated pipe.

As a further scheme of the utility model: the ratio of the hydraulic retention time of the aerobic treatment area to the hydraulic retention time of the anoxic treatment area is more than 1.

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

1. the application can automatically oxygenate in the water pumping process through water spraying type water distribution, sewage is fully contacted with air, plants can be irrigated, the aerobic treatment and the plant growth of the artificial wetland are facilitated, and the wetland treatment capacity is improved.

2. Sewage enters water in a segmented mode, a nitrifying liquid backflow facility does not need to be arranged, and energy required by internal circulation is saved; nitrate nitrogen generated in the aerobic treatment zone is used as an electron acceptor in the anoxic treatment zone to participate in denitrification reaction and anoxic phosphorus uptake reaction, and simultaneously, a raw water organic carbon source brought by anaerobic water inflow is used as an energy source, so that the denitrification and phosphorus uptake efficiency is improved, and the medicament cost is saved.

3. Nitrogen generated by denitrification flows among the fillers, blows sediments and sludge among the fillers to slide downwards, is convenient for sludge discharge of the artificial wetland, and simultaneously slows down filler blockage.

Drawings

Fig. 1 is a schematic structural diagram of the present embodiment.

In the figure: 1-a pool body, 2-a water inlet system, 3-a plant treatment area, 4-an aerobic treatment area, 5-an anoxic treatment area, 6-a water collection area, 7-a mud collection and discharge area, 8-a water spray and distribution system, 9-an anaerobic water distribution system, 10-aquatic plants, 11-a first filler, 12-a second filler, 13-a third filler, 14-a water collection pipe, 15-a ventilation pipe, 16-a mud discharge pipe, 17-a mud collection tank, 18-a water pump, 19-a water spray and distribution branch pipe, 20-a water spray pipe, 21-a spray head, 22-an anaerobic water distribution branch pipe and 23-a water outlet channel.

Detailed Description

The technical solutions in the embodiments of the present invention will be clearly and completely described below with reference to the drawings in the embodiments of the present invention, and it is obvious that the described embodiments are only a part of the embodiments of the present invention, and not all of the embodiments. All other embodiments, which can be derived by a person skilled in the art from the embodiments given herein without making any creative effort, shall fall within the protection scope of the present invention.

Referring to fig. 1, in the embodiment of the present invention, a water-spraying aerobic-anoxic artificial wetland comprises a tank body 1 and a water inlet system 2, wherein the tank body 1 is composed of a plant treatment area 3, an aerobic treatment area 4, an anoxic treatment area 5, a water collection area 6 and a sludge and mud collection area 7 from top to bottom; the water inlet system 2 is divided into a water spraying and distributing system 8 and an anaerobic water distributing system 9; the plant treatment area 3 comprises aquatic plants 10 and first fillers 11, the aerobic treatment area 4 and the anoxic treatment area 5 are provided with second fillers 12, the water collection area 6 is internally provided with third fillers 13 and a water collection pipe 14, the outlet of the water collection pipe 14 is connected with a vent pipe 15, and the sludge collection and discharge area 7 is provided with a sludge discharge pipe 16 and a sludge collection groove 17; the water spraying and distributing system 8 is arranged at the lower part of the plant treatment area 3, the front end of the water spraying and distributing system is connected with a water pump 18 and is used for pressurizing a water spraying pipe 20 and a spray head 21 which are arranged on a water spraying and distributing branch pipe 19, and the water spraying pipe 20 and the spray head 21 extend out of the wet ground surface and are higher than the aquatic plant 10; the anaerobic water distribution system 9 is arranged at the lower part of the aerobic treatment zone 4 and is provided with an anaerobic water distribution branch pipe 22.

The water inlet of the water inlet system 2 comes from a water outlet channel 23 of a domestic sewage pretreatment process such as a sedimentation tank, an anaerobic pond and the like, the ratio of the hydraulic retention time of the aerobic treatment area 4 to the hydraulic retention time of the anoxic treatment area 5 is more than 1, the aquatic plants 10 are flooding-resistant and stain-resistant high-altitude aquatic plants, the particle size of the first filler 11 is about 5-10mm, the thickness is 20-50cm, the particle size of the second filler 12 is 2-5mm, the thickness is 150 plus 200cm, the particle size of the third filler 13 is 10-15mm, the thickness is 30-50cm, the anaerobic water distribution branch pipe 22 and the water collection pipe 14 are perforated pipes, and the sludge discharge pipe 16 adopts a perforated sludge discharge pipe.

When the device is used, a part of pretreated sewage inlet water is sprayed to the air through the water spraying type water distribution system 3 to be fully oxygenated, and the water plants 10 are irrigated and then flow into the aerobic treatment area 4 to generate aerobic biological reaction, so that organic matters are degraded and nitrate nitrogen is generated; the other part of the inlet water enters the artificial wetland filler through the anaerobic water distribution system 9 and flows downwards, and the two parts of the inlet water are mixed in the anoxic treatment area 5 to generate anoxic biological reaction; the sewage treatment is realized by utilizing the microbial adsorption degradation, the nitrification and denitrification, the denitrification phosphorus absorption, the plant rhizome absorption and the filler adsorption, the treated water is collected by the water collecting pipe 14 and then discharged, the generated sludge is collected and discharged from the lower sludge discharging pipe 16, and the gas overflows from the vent pipe 15.

It will be evident to those skilled in the art that the utility model is not limited to the details of the foregoing illustrative embodiments, and that the present invention may be embodied in other specific forms without departing from the spirit or essential attributes thereof. The present embodiments are therefore to be considered in all respects as illustrative and not restrictive, the scope of the utility model being indicated by the appended claims rather than by the foregoing description, and all changes which come within the meaning and range of equivalency of the claims are therefore intended to be embraced therein. Any reference sign in a claim should not be construed as limiting the claim concerned.

Furthermore, it should be understood that although the present description refers to embodiments, not every embodiment may contain only a single embodiment, and such description is for clarity only, and those skilled in the art should integrate the description, and the embodiments may be combined as appropriate to form other embodiments understood by those skilled in the art.

Claims

1. A water-spraying aerobic and anoxic constructed wetland which is characterized by comprising a tank body (1) and a water inlet system (2) arranged on one side of the tank body (1), a plant treatment area (3), an aerobic treatment area (4), an anoxic treatment area (5), a water collection area (6) and a sludge collection and discharge area (7) are sequentially arranged in the tank body (1) from top to bottom, the water inlet system (2) comprises a water spraying and distributing system (8) and an anaerobic water distributing system (9), the water spraying and distributing system (8) comprises water spraying and distributing branch pipes (19) arranged in the plant treatment area (3), the water spraying and distributing branch pipe (19) is connected with at least one water spraying pipe (20), the water spray pipe (20) extends upwards above the plant treatment area (3), the anaerobic water distribution system (9) comprises an anaerobic water distribution branch pipe (22) positioned at the lower part of the aerobic treatment area (4).

2. The water-spraying type aerobic-anoxic artificial wetland according to claim 1 is characterized in that one side of the tank body (1) is provided with an outlet channel (23) for pretreatment process, a water pump (18) is arranged in the outlet channel (23), and the water-spraying and distributing system (8) is communicated with the water pump (18).

3. The water-spraying aerobic-anoxic artificial wetland according to claim 1 wherein the plant treatment zone (3) is provided with a first filler (11), the first filler (11) has a particle size of about 5-10mm and a thickness of 20-50cm, and aquatic plants (10) are planted in the plant treatment zone (3).

4. The water-spraying type aerobic-anoxic artificial wetland according to claim 3, wherein a plurality of water-spraying pipes (20) are provided, the upper end of the water-spraying pipe (20) is provided with a spray head (21), and the spray head (21) is positioned above the aquatic plant (10).

5. The water-spraying type aerobic-anoxic artificial wetland according to claim 1, wherein the aerobic treatment zone (4) is internally provided with a second filler (12), the anoxic treatment zone (5) is internally provided with a third filler (13), the particle size of the second filler (12) is 2-5mm, the thickness is 150-cm, the particle size of the third filler (13) is 10-15mm, and the thickness is 30-50 cm.

6. A water-spraying aerobic-anoxic artificial wetland according to claim 1 characterized in that a water collecting pipe (14) is arranged in the water collecting area (6), the water collecting pipe (14) is a perforated pipe, a ventilation pipe (15) is arranged at the upper end of the water collecting pipe (14), and the ventilation pipe (15) is positioned outside the tank body (1).

7. The water-spraying aerobic-anoxic artificial wetland according to claim 1 characterized in that a sludge collecting tank (17) is arranged in the sludge collecting and discharging area (7), a sludge discharging pipe (16) is arranged in the sludge collecting tank (17), and the sludge discharging pipe (16) is a perforated pipe.

8. The water-spraying aerobic-anoxic artificial wetland according to claim 1 characterized in that the ratio of the hydraulic retention time of the aerobic treatment zone (4) to the anoxic treatment zone (5) is more than 1.