CN219950710U - Unpowered fluidized bed coupling soilless wetland module equipment and sewage treatment system - Google Patents

Abstract

The utility model relates to the technical field of sewage treatment, in particular to unpowered fluidized bed coupling soilless wetland module equipment, which comprises an equipment tank body, wherein the equipment tank body is sequentially divided into an anaerobic activated sludge reaction zone, an anaerobic microfluidization bed reaction zone and an soilless culture artificial wetland reaction zone from bottom to top. Compared with the prior art, the unpowered fluidized bed coupling soilless wetland module equipment provided by the utility model has at least the following beneficial effects: the whole energy consumption is low, the dependence on instruments and meters of electromechanical equipment is reduced, and the energy-saving and environment-friendly effects are realized. The modularized product is adopted, and has the advantages of high durability, low manufacturing cost and wide range of sewage concentration adaptation; the operation modes of continuous operation, intermittent operation and water-deficient operation can be provided; meets the rural sewage drainage characteristics and meets the sewage treatment requirements.

Description

Unpowered fluidized bed coupling soilless wetland module equipment and sewage treatment system

Technical Field

The utility model relates to the technical field of sewage treatment, in particular to unpowered fluidized bed coupling soilless wetland module equipment and a sewage treatment system.

Background

Rural domestic sewage refers to wastewater produced in rural areas, including domestic life, livestock and poultry drinking water, cultivation secretion and excretion, crop irrigation and the like. These wastewater can easily cause pollution in surface and ground water due to lack of effective treatment measures, and can seriously affect the environment and human health in the long term.

The rural domestic sewage is mainly characterized by complex pollutant types, low pollutant content, large water quantity, large water quality fluctuation and uneven space-time distribution. Wherein the main contaminants include organic matter, nitrogen, phosphorus, microorganisms, etc.

The rural domestic sewage treatment process mainly comprises integrated power AAO (anaerobic-anoxic-aerobic) equipment and unpowered integrated AAA (three-stage anaerobic) equipment and an artificial wetland process, and the current rural artificial wetland sewage treatment station is in the running process, because the artificial wetland has a complex structure, the problem of serious blockage easily occurs, even a certain sewage pool body has serious leakage, the pool body lacks water and plants wither due to drought, so that the purification function of the artificial wetland is basically lost, and the effect on domestic sewage treatment is greatly reduced.

Disclosure of Invention

Aiming at the technical problems existing in the prior art, the utility model provides the unpowered fluidized bed coupled soilless wetland module equipment for solving the problems that the constructed wetland for rural sewage treatment is complex in structure, a sewage pool is easy to block and the wetland purifying effect is poor.

The technical scheme for solving the technical problems is as follows: the unpowered fluidized bed coupling soilless wetland module equipment comprises an equipment tank body, wherein the equipment tank body is sequentially divided into an anaerobic activated sludge reaction zone, an anaerobic microfluidization bed reaction zone and an soilless culture artificial wetland reaction zone from bottom to top;

a perforated water distribution pipe and a water inlet pipe group which is communicated with the perforated water distribution pipe and extends out of the equipment pond body are arranged in the anaerobic activated sludge reaction zone;

the anaerobic microfluidization bed reaction zone is filled with suspended filler;

a framework structure carrier for planting plants and a plant growth plate covered on the framework structure carrier are arranged in the soilless culture artificial wetland reaction zone; the plant growth plate is provided with uniformly distributed growth limiting holes.

On the basis of the technical scheme, the utility model can be improved as follows.

Further, the water inlet pipe group comprises a central pipe vertically arranged at the center of the equipment pool body and communicated with the perforated water distribution pipe, and a water inlet pipe communicated with the central pipe.

Further, the top end of the central tube penetrates through the plant growth plate, and a detachable blocking cap is arranged at the top end opening of the central tube.

Further, a perforated water collecting pipe used for collecting the treated sewage is further arranged in the reaction zone of the soilless culture artificial wetland, and a water outlet pipe extending out of the equipment pond body is further communicated with the perforated water collecting pipe.

Further, the equipment tank body is integrally formed by glass fiber reinforced plastics.

Further comprises a grid supporting layer for separating the anaerobic activated sludge reaction zone, the anaerobic microfluidization bed reaction zone and the soilless culture artificial wetland reaction zone.

Further, the perforated water distribution pipes are distributed in a net shape along the transverse and longitudinal directions in a crossing manner.

Further, the perforated water collecting pipes are distributed in a net shape along the transverse and longitudinal directions in a crossing manner.

Compared with the prior art, the unpowered fluidized bed coupling soilless wetland module equipment provided by the utility model has at least the following beneficial effects:

1) The whole energy consumption is low, the dependence on instruments and meters of electromechanical equipment is reduced, and the energy-saving and environment-friendly effects are realized.

2) The modularized product is adopted, and has the advantages of high durability, low manufacturing cost and wide range of sewage concentration adaptation; the operation modes of continuous operation, intermittent operation and water-deficient operation can be provided; meets the rural sewage drainage characteristics and meets the sewage treatment requirements.

3) The whole wetland module equipment also has the advantages of simple installation, short construction period, short debugging period and low installation quality control requirement, and is suitable for rural construction requirements.

4) The equipment pool body is relative to the concrete structure treatment pool, leakage can not occur, the filter bed can not be blocked, plants do not need harvesting and sorting, malodorous gas is not escaped, the later operation and maintenance are simple, and the operation and maintenance cost is low.

The utility model also provides a sewage treatment system, which comprises a water distribution device, a drainage well and a combined module constructed wetland consisting of a plurality of unpowered fluidized bed coupling soilless wetland module devices;

the water distribution device is characterized in that a main sewage inlet pipe is arranged on the water inlet side of the water distribution device, a sewage interception basket hanging device is arranged on the main sewage inlet pipe, and the water outlet side of the water distribution device is communicated with each water inlet pipe in the combined module constructed wetland through a pipeline; the drainage side of the drainage well is provided with a main drainage pipe, and the water inlet side of the main drainage pipe is communicated with each water outlet pipe in the combined module constructed wetland through a pipeline.

Furthermore, the combined module constructed wetland is provided with slope protection all around, and a water interception ditch is reserved at the slope top of the slope protection.

Drawings

FIG. 1 is a schematic view of a longitudinal section structure of the present utility model;

FIG. 2 is a schematic diagram of a functional area of a cross section of the present utility model;

FIG. 3 is a schematic cross-sectional view of the present utility model;

FIG. 4 is a schematic view of a top plate of the present utility model;

FIG. 5 is a schematic view of the upper perforated header arrangement of the present utility model;

FIG. 6 is a schematic view of the bottom perforated water distribution pipe arrangement of the present utility model;

FIG. 7 is a schematic diagram of a combined process flow of the present utility model;

fig. 8 is a schematic view of a combined planar arrangement of the present utility model.

In the drawings, the list of components represented by the various numbers is as follows:

1. the device comprises a device pool body 2, a perforated water distribution pipe 3, suspended filler 4, a framework structure carrier 5, a plant growth plate 5.1, a growth limiting hole 6, a central pipe 6.1, a plugging cap 7, a water inlet pipe 8, a perforated water collection pipe 9, a water outlet pipe 10, a grid supporting layer 11, a water distribution device 12, a drainage well 13, a sewage interception hanging basket device 14, a slope protection 15 and a water interception ditch.

Detailed Description

The principles and features of the present utility model are described below with reference to the drawings, the examples are illustrated for the purpose of illustrating the utility model and are not to be construed as limiting the scope of the utility model.

It should be noted that the terms "mounted," "connected," and "connected" are to be construed broadly, and may be, for example, fixedly connected, detachably connected, or integrally formed, unless otherwise specifically indicated and defined. The specific meaning of such terms in this patent will be understood by those of ordinary skill in the art as the case may be.

The rural domestic sewage treatment process mainly comprises integrated dynamic AAO (anaerobic-anoxic-aerobic) equipment and unpowered integrated AAA (three-stage anaerobic) equipment and artificial wetland technology, and in the operation and investigation process of the existing rural artificial wetland sewage treatment station for a long time, the normal operation time exceeds 1-2 years, the problems of serious blockage are found almost all, some pond bodies are seriously leaked, the pond bodies lack water, plants are drought and withered, the purification function of the artificial wetland is basically lost (or the treatment effect is low), and the inventor summarizes the following problems by on-site exploration and combination of corresponding data:

1. design and construction problems:

at present, aiming at rural sewage treatment, a rural constructed wetland is designed according to a standardized small-scale large-scale and medium-scale constructed wetland, the structure of the type constructed wetland is complex, a water distribution system, a water collection system and a filter bed (generally an intermittent graded broken stone layering tiling system) are formed by wetland plants, ditches and other systems, in addition, the number density of the wetland plants and the seepage prevention of a pond body are strictly controlled, the quality control requirement in the whole construction link process is strict, particularly the filter bed and the filter material must be cleaned during construction, the sediment content, the grain diameter, the strength, the wear resistance and the water stability of the main control filter material are qualified and can be used, and the blockage problem (or the blockage period allowed by the design) can be effectively avoided only by grading layering tiling the main control filter material according to design parameters.

In addition, the tank body is required to be free of leakage (or the leakage value is within a design allowable value), the impervious design generally comprises an impervious concrete structure layer, an impervious mortar surface layer and two-in-one film impervious base layers, in reality, the geographical positions of stations are remote and scattered, traffic is inconvenient, the investment of a single rural small constructed wetland is small (the general treatment capacity is less than 30 tons/day, or the cost of the wetland is less than 20 ten thousand), and local social environment factors cause the economic cost of implementation of medium-and-large construction to be not reduced, and the contradiction situation that the construction level of a local small construction team is poor and the quality control is difficult is caused, so that the running quality is poor, and the input treatment funds are inconsistent with the expected social environment benefit and income.

2. Operation and maintenance problems:

due to the problems of small rural domestic sewage treatment operation and maintenance funds, lack of professional technicians, large site quantity, scattered and hidden positions, inconvenient traffic, small site maintenance times, failure of an automatic instrument, blockage of grid slag and the like, pump electromechanical equipment is damaged or not operated, integrated equipment is paralyzed or effluent is not up to standard, and due to mismatching of the power of the electromechanical equipment (such as the parameters of a minimum water pump flow lift and the like are far greater than a designed water inlet flow lift and the like, and backflow is needed), the ineffective energy consumption is increased; in addition, some constructed wetland plants are not supervised by people for a long time, the plants grow and reproduce excessively, and the plants are not effectively sorted, pulled out and harvested in time, so that the filter materials of the filter bed are hardened and blocked, and finally the functions are disabled.

In summary, the inventor provides an unpowered fluidized bed coupled soilless wetland module device to solve the problems in design, construction and operation by combining rural sewage treatment characteristics.

As shown in fig. 1-6, the unpowered fluidized bed coupling soilless wetland module device of the present utility model comprises a device tank body 1, wherein the device tank body 1 is internally and sequentially divided into an anaerobic activated sludge reaction zone, an anaerobic microfluidization bed reaction zone and an soilless cultivation artificial wetland reaction zone from bottom to top.

A perforated water distribution pipe 2 and a water inlet pipe group which is communicated with the perforated water distribution pipe 2 and extends to the outside of the equipment pool body 1 are arranged in the anaerobic activated sludge reaction zone; domestic sewage is led into the perforated water distribution pipe 2 through the water inlet pipe group, the sewage is evenly led into the anaerobic activated sludge reaction zone through the perforated water distribution pipe 2, the sewage upwards passes through the flocculent activated sludge to form a sludge bed, a large amount of anaerobic activated sludge is stored in the reaction zone, and microorganisms in the sludge decompose organic matters in the mixed contact of the water inlet and the activated sludge, and simultaneously, the generated micro biogas bubbles are continuously discharged. In the process of rising the micro bubbles, larger bubbles are continuously generated, so that biogas stirring is provided for the suspension carrier of the upper layer fluidized bed, and the effect of removing organic pollutants and nitrogen and phosphorus from the activated sludge is improved.

The anaerobic microfluidization bed reaction zone is filled with a suspension filler 3; after sewage treated by the anaerobic activated sludge reaction zone is uniformly risen into the anaerobic microfluidization bed reaction zone, the rising water flow and biogas generation bubbles are combined to drive the suspended filler 3 to carry out fluidization movement, and the huge specific surface area of the suspended filler 3 can provide enough attachment space for microorganisms, so that the larger biological community quantity is enriched, and a biological film is formed to further purify the sewage.

Wherein, the suspended filler 3 adopts biological filler special for QD-RAS, has small operation density (the density is not more than 1.1g/cm < 2 > after water absorption expansion film formation and slightly more than the density of water), has good micro-dynamic fluidization state, and is particularly suitable for fluidized beds with slow rising flow rate and weak stirring strength; the specific surface area is larger (more than 4000m2/m 3) and is several times that of the filler made of the general HDPE, PP, ABS, PVC material, and the huge specific surface area can provide enough attachment space for microorganisms, so that larger biological community quantity is enriched; the polymer gel component contained in the QD-RAS filler is a good culture medium for microorganism bacteria, and after the filler is filled with water, the gel absorbs water and swells, and only 3-7 days of bacteria are needed to grow a biological film on the surface and gaps of the filler, so that the anaerobic biological film forming time can be greatly shortened, and the debugging time is shortened.

Under the dual actions of rising water flow and generating bubbles on the bottom sludge bed, the carrier is in a fluidized state, has good mass transfer conditions, is easy to fully contact with the wastewater, has high activity for bacteria, and has the advantages of high organic matter treatment efficiency, no blockage and the like.

A framework structure carrier 4 for planting plants and a plant growth plate 5 covered on the framework structure carrier 4 are arranged in the soilless culture artificial wetland reaction area; the plant growth plate 5 is provided with evenly distributed growth limiting holes 5.1. Plants planted in the framework structure carrier 4 are emergent aquatic plants, the plant planting density can be far higher than that of the traditional constructed wetland without blocking, a denser root system area is provided, and the effect of absorbing and removing organic pollutants and nitrogen and phosphorus by the root system is greatly improved.

The framework structure carrier 4 is made of glass fiber reinforced plastic, can replace the sand, gravel and soil matrix of the traditional constructed wetland, and avoids the problem of blockage caused by factors such as irregular operation or construction for a long time.

Emerging plants are plants that grow in slow water currents, water depths of no more than 2 meters, or are fully submerged in shallow water, with all or most of the leaves, stems, flowers, fruits, etc. submerged in water. These plants grow in water, where a range of adaptive structures are adopted, such as floating leaves, stomata, fine roots, etc. Common emergent aquatic plants include typha, reed, nutgrass galingale rhizome, calamus, water lily and the like, and the plants can assist ecological restoration, water body protection and industrial development.

After the sewage enters the soilless culture artificial wetland reaction zone after being treated by the anaerobic activated sludge reaction zone and the anaerobic microfluidization bed reaction zone, the sewage uniformly rises to pass through the soilless artificial wetland composed of the dense skeleton zone biomembrane and the plant root system, and various pollutants in the water are further removed, wherein the main indexes are as follows:

for SS: after the wetland system is mature, the surfaces of the dense frameworks and plant root systems form biological films due to the growth of a large number of microorganisms. When wastewater flows through the biological membrane, a large amount of SS is blocked and trapped by the filler and the plant root system.

For organic matters: organic contaminants are removed by absorption, assimilation and catabolism of the biofilm.

Pair N, P: the oxygen is transferred and released by plant root systems in the wetland system, so that aerobic, anoxic and anaerobic states are sequentially formed in the surrounding environment, nitrogen and phosphorus in the wastewater can be ensured to be absorbed by plants and microorganisms as nutrition, the nitrogen and the phosphorus can be removed by nitrification and denitrification, and finally, the wastewater (mud) is discharged through a backwashing dense skeleton area or the harvested plants are finally removed.

In this embodiment, the unpowered fluidized bed coupled soilless wetland module device further comprises a grid supporting layer 10 for separating the anaerobic activated sludge reaction zone, the anaerobic microfluidization bed reaction zone and the soilless culture artificial wetland reaction zone.

As an implementation mode, a perforated water collecting pipe 8 for collecting treated sewage is further arranged in the reaction zone of the soilless culture artificial wetland, a water outlet pipe 9 extending out of the equipment pool body 1 is further communicated with the perforated water collecting pipe 8, and the perforated water collecting pipe 8 is distributed in a net shape along the transverse and longitudinal cross. The treated sewage is collected by a perforated water collecting pipe 8 and then is collected in a water outlet pipe 9, and the sewage is discharged after reaching the standard.

As an embodiment, the water inlet pipe group comprises a central pipe 6 vertically arranged at the center of the equipment pool body 1 and communicated with the perforated water distribution pipe 2, and a water inlet pipe 7 communicated with the central pipe 6, and the perforated water distribution pipe 2 is distributed in a net shape along the transverse and longitudinal directions in a crossing manner. The water inlet pipe 7 is used for conveying untreated sewage into the central pipe 6, and the water level drop is more than 0.5 m, so that unpowered siphon pulse water inlet is realized, the submerged activated sludge can be stirred in a pulse manner in the sewage conveying process, and the effect of removing organic pollutants and nitrogen and phosphorus from the activated sludge is improved compared with the effect of general gravity water inlet and rising.

Specifically, when the difference between the water level of the final discharge ditch (pipeline) and the highest water level of the equipment is greater than 0.5 m, the equipment can operate in a tidal mode, namely, after the self-flowing water of the equipment is full, the water level of the pool body 1 of the equipment floods the top end of the siphon water discharge pipe, a siphon phenomenon is generated at the moment, the dense skeleton area is emptied quickly to reach the standard of clear water, the liquid level is lowered quickly in the quick water discharge process to form negative pressure, a large amount of air is sucked in to form an aerobic state, and the biological film of the dense skeleton area and the biological film attached to the plant root system are in an anaerobic-anoxic-aerobic alternate operation state in a reciprocating mode, so that the biological synchronous dephosphorization and denitrification effect can be achieved more effectively.

As an implementation mode, the top end of the central tube 6 penetrates through the plant growth plate 5, a detachable blocking cap 6.1 is arranged at the top end opening of the central tube 6, the central tube 6 can be used as a sludge discharge suction port, clear water is injected from a water outlet pipe 9 during back flushing, the perforated water distribution pipe 2 collects bottom back flushing sludge sewage, and the back flushing sludge sewage is discharged outside by suction from the central tube 6; in normal operation, the top port of the central tube 6 is plugged by the plugging cap 6.1.

After a period of operation of a common constructed wetland, the problem of filter material blockage easily occurs, the common constructed wetland generally cannot be backwashed, plants are required to be cleaned, the filter material is dug out and cleaned by professional equipment, then the filter material is graded and paved again according to the original design, the process is complicated and various, the reconstruction is equivalent to partial reconstruction, the cost is high, the actual condition is that the blocked filter material has no backwashed recycling value in terms of the process and economy, the new filter material is usually replaced directly, the abandoned filter material is generally filled in a landfill, and the unpowered fluidized bed coupling soilless constructed wetland module equipment designed by the utility model can adopt backwashed operation to solve the problem of blockage, and has the following specific operation:

continuous backwash mode:

closing water inlet and outlet, pumping out sewage (mud) in the equipment by a self-priming pump, injecting clean water by a top water discharge weir, synchronously pumping and discharging backwash sewage (mud) at the bottom, and ending pumping and discharging sewage-free.

Intermittent backwash mode:

closing water inlet and outlet, pumping out sewage (mud) in the equipment by a self-sucking pump, injecting clean water by a top water discharge weir, stopping water injection after the equipment is full of water, and repeating the operation from the sewage (mud) in the bottom pumping out equipment to the end of pumping out no sewage.

As an implementation mode, the device tank body 1 is integrally formed by glass fiber reinforced plastic, and the plant growth plate 5 is a whole embossed glass fiber reinforced plastic plate, so that the glass fiber reinforced plastic has the characteristics of proper rigidity, good corrosion resistance, strong ageing resistance and the like, and plays roles of pollution prevention, beautification and ground hardening.

In addition, a batch of plant growth holes 5.1 are formed in the plant growth plate 5, quincuncial arrangement can be adopted to limit plants to grow only in the holes, other spaces of the plate are closed light-tight areas, new seedlings propagated through root systems lack sunlight and are difficult to grow under the physical limit of the strength of the plant growth plate 5 material, and plants in the holes can grow well, so that the aim of preventing the plants from excessively propagating is fulfilled, the number and the growth positions of the plants are strictly controlled, and reasonable growth density is fixed; for a common artificial wetland, plants in the operation period can excessively reproduce and grow, the density of a severe dense area is reduced by a combination mode of manual sorting, digging and harvesting, reasonable plant density is controlled, and the phenomenon that the water permeability of a wetland filter bed is affected due to hardening of filter materials caused by too dense root systems is prevented; the plant sorting device can effectively avoid plant sorting matters in the operation process of the common artificial wetland through the plant growth plates 5, reduces the operation cost and basically does not need maintenance.

Because the device cell body 1 adopts an integrated glass fiber reinforced plastic structure, no leakage phenomenon exists, the discharged water is collected intensively by the perforated water collecting pipe 8, the device is always in a full water state, and the device is combined with the plant growth plate 5, so that the water evaporation at the high temperature of sunlight direct irradiation can be prevented, water is not fed for a long time, plants cannot be withered and withered, and the activity is kept for a long time, so that the operation in the water shortage state can be met.

The application scene of the unpowered fluidized bed coupling soilless wetland module equipment designed by the utility model is as follows:

rural single-family and combined-family application:

the rural domestic sewage is directly fed into the equipment after being treated by the septic tank and the slag blocking.

Rural sewage pipe network terminal application:

pipe network water inlet, coarse and fine grids, primary sedimentation tank (sand setting tank), water distribution well, multiple groups of parallel and serial combined module equipment and clear water discharge tank

Purifying landscape water:

landscape pool, lifting pump, Y-type filter, module equipment and reflux to landscape pool

River course black and odorous water treatment (mobile station):

upstream sewage interception area water intake pump, automatic back flushing filter, water diversion mother branch pipe, movable installation module devices (temporarily installed in the empty space near the river bank), and water discharge into the upstream of the river channel section.

After the water quality of the river water reaches the standard, the modularized equipment can be removed, and the modularized equipment can be used as a temporary mobile station and can also be used as a permanent station to run for a long time.

The construction of the common rural sewage treatment station is divided into the construction of prepositioned integrated biological treatment equipment and the construction of the constructed wetland with a civil structure, the working procedures are numerous, the quality is difficult to guarantee, the modularized equipment not only simply integrates biological pretreatment and constructed wetland units, but also plays the benefits of higher efficiency, energy conservation and reliability through reasonable optimization design.

As shown in fig. 7 and 8, the sewage treatment system of the present utility model comprises a water distribution device 11, a drainage well 12 and a combined module constructed wetland composed of a plurality of the unpowered fluidized bed coupled soilless wetland module devices. The number of unpowered fluidized bed coupled soilless wetland module devices can be adjusted according to actual sewage treatment requirements.

The water inlet side of the water distribution device 11 is provided with a main sewage inlet pipe, the main sewage inlet pipe is provided with a sewage interception basket hanging device 13, and the water outlet side of the water distribution device 11 is communicated with each water inlet pipe 7 in the combined module constructed wetland through a pipeline; the drainage side of the drainage well 12 is provided with a main drainage pipe, and the water inlet side of the drainage well is communicated with each water outlet pipe 9 in the combined module constructed wetland through a pipeline. The water distribution device 11 inputs a sewage source through a main sewage inlet pipe, performs preliminary filtration on impurities through the sewage interception basket hanging device 13, and then conveys the impurities to the unpowered fluidized bed coupled soilless wetland module equipment for further treatment through various pipelines, and the treated sewage is collected and discharged in a concentrated mode through the drainage well 12.

Above-mentioned sewage treatment system only need excavate to the design elevation, handles foundation ditch foundation according to actual excavation soil property, and general soil property can be simple tamp the flattening and carry out construction installation after, and equipment foundation handles simply, and is low to the inhomogeneous sedimentation requirement of foundation, and quality control is simple, take place the constructed wetland bottom plate of civil engineering structure because of the inhomogeneous sedimentation of foundation produces the infiltration phenomenon of ftracture, is fit for rural construction team construction.

In addition, all be equipped with the bank protection 14 around the combination module constructed wetland, bank protection 14 slope top department still has reserved the water interception ditch 15, protects the wetland through bank protection and water interception ditch 15, guarantees each unpowered fluidized bed coupling no soil wetland module equipment steady operation.

The emission standard accords with: the first-level standard in wastewater pollutant emission standard of rural domestic sewage treatment facilities (DB 42/1537-2019).

It should be noted that, in this document, 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. Unless specifically stated or limited otherwise, the terms "mounted," "connected," and "coupled" are to be construed broadly, and may be, for example, fixedly connected, detachably connected, or integrally connected; can be mechanically or electrically connected; can be directly connected or indirectly connected through an intermediate medium, and can be communication between two elements. The specific meaning of the above terms in the present utility model can be understood by those of ordinary skill in the art according to the specific circumstances.

While preferred embodiments of the present utility model have been described, additional variations and modifications in those embodiments may occur to those skilled in the art once they learn of the basic inventive concepts. It is therefore intended that the following claims be interpreted as including the preferred embodiments and all such alterations and modifications as fall within the scope of the utility model.

It will be apparent to those skilled in the art that various modifications and variations can be made to the present utility model without departing from the spirit or scope of the utility model. Thus, it is intended that the present utility model also include such modifications and alterations insofar as they come within the scope of the appended claims or the equivalents thereof.

Claims (10)

1. The unpowered fluidized bed coupling soilless wetland module equipment comprises an equipment tank body (1) and is characterized in that the inside of the equipment tank body (1) is sequentially divided into an anaerobic activated sludge reaction zone, an anaerobic microfluidization bed reaction zone and an soilless culture artificial wetland reaction zone from bottom to top;

a perforated water distribution pipe (2) and a water inlet pipe group which is communicated with the perforated water distribution pipe (2) and extends to the outside of the equipment pool body (1) are arranged in the anaerobic activated sludge reaction zone;

the anaerobic microfluidization bed reaction zone is filled with suspended filler (3);

a skeleton structure carrier (4) for planting plants and a plant growth plate (5) covered on the skeleton structure carrier (4) are arranged in the soilless culture artificial wetland reaction zone; the plant growth plate (5) is provided with evenly distributed growth limiting holes (5.1).

2. The unpowered fluidized bed coupled soilless wetland module device according to claim 1, wherein the water inlet pipe group comprises a central pipe (6) vertically arranged at the center of the device tank body (1) and communicated with the perforated water distribution pipe (2), and a water inlet pipe (7) communicated with the central pipe (6).

3. The unpowered fluidized bed coupled soilless wetland module device according to claim 2, wherein the top end of the central tube (6) penetrates through the plant growth plate (5), and the top end opening thereof is provided with a detachable blocking cap (6.1).

4. The unpowered fluidized bed coupling soilless wetland module device according to claim 2, wherein a perforated water collecting pipe (8) for collecting treated sewage is further arranged in the soilless culture artificial wetland reaction zone, and a water outlet pipe (9) extending out of the device tank body (1) is further communicated with the perforated water collecting pipe (8).

5. The unpowered fluidized bed coupled soilless wetland module device according to claim 1, wherein the device tank body (1) is integrally formed of glass fiber reinforced plastic.

6. The unpowered fluidized bed coupled soilless wetland module device of claim 1 further comprising a grid support layer (10) for separating the anaerobic activated sludge reaction zone, the anaerobic microfluidization bed reaction zone and the soilless culture artificial wetland reaction zone.

7. The unpowered fluidized bed coupled free-land module apparatus of claim 1, wherein the perforated water distribution pipes (2) are cross-distributed in a net shape in a transverse and longitudinal direction.

8. The unpowered fluidized bed coupled free-land module apparatus of claim 4, wherein the perforated water collecting pipes (8) are cross-distributed in a net shape in a transverse and longitudinal direction.

9. A sewage treatment system, characterized by comprising a water distribution device (11), a drainage well (12), and a combined module constructed wetland consisting of a plurality of unpowered fluidized bed coupled soilless wetland module devices as defined in any one of claims 1 to 8;

the water inlet side of the water distribution device (11) is provided with a main sewage inlet pipe, the main sewage inlet pipe is provided with a sewage interception basket hanging device (13), and the water outlet side of the water distribution device (11) is communicated with each water inlet pipe (7) in the combined module constructed wetland through a pipeline; the drainage side of the drainage well (12) is provided with a main drainage pipe, and the water inlet side of the drainage well is communicated with each water outlet pipe (9) in the combined module constructed wetland through a pipeline.

10. The sewage treatment system according to claim 9, wherein the combined module constructed wetland is provided with slope protection (14) at the periphery, and a water interception ditch (15) is reserved at the slope top of the slope protection (14).