CN206692517U - A kind of integrated combination wetland domestic sewage processing system - Google Patents

Abstract

The utility model belongs to the technical field of sewage treatment and discloses an integrated combined wetland domestic sewage treatment system, which comprises a bed body with a water-proof function and three units on the left, middle and right built on the basis of the bed body; the left unit It includes a water inlet device and a regulating pool; the middle unit includes a stable surface flow pool and a subsurface flow pool; the right unit is a sump. The utility model has the advantages of strong impact resistance, small floor area, strong silting resistance, good effluent quality, etc.; it can effectively solve the problems of low organic load in the stable pond and possible groundwater pollution by the underground infiltration system, and can effectively Solve the problems of large occupied area, easy blockage, short operation period and unstable operation of constructed wetland; in addition, the system effectively integrates the anaerobic adjustment pool of the pretreatment unit, and there is no need to build another pretreatment unit outside the system, saving land resources .

Description

An integrated combined wetland domestic sewage treatment system

technical field

The utility model belongs to the technical field of sewage treatment, in particular to an integrated combined wetland domestic sewage treatment system.

Background technique

At present, in the process of urban development in my country, the municipal sewage treatment system collects the sewage within the designated sewage discharge range, and transports it to the sewage treatment plant for centralized treatment by the urban sewage pipe network. However, with the rapid development of my country's social economy, the continuous improvement of rural living standards, and the development of rural livestock and poultry farming, aquaculture, and agricultural and sideline product processing, the amount of domestic sewage and wastewater in rural areas is increasing day by day, forming many decentralized systems. Domestic sewage pollution sources cannot be collected by scattered urban sewage pipe networks, making centralized treatment uneconomical. At present, the treatment of such decentralized domestic sewage has not been well resolved. The sewage produced or discharged by decentralized domestic sewage pollution sources is not well treated and discharged on the spot at will. The pollution of the surface water environment and the damage to the water ecology are becoming more and more prominent, which not only directly affects the economy of industrial and agricultural production Benefits, but also not conducive to social and economic development and stability. Therefore, on-site treatment of sewage to meet the standard discharge or reuse is the sewage treatment mode actively advocated at present. Stabilization pond is a natural low-cost sewage treatment method. It uses the joint action of bacteria and algae to purify the water body. It has the characteristics of low investment and operation costs and simple operation and maintenance. The land area is large, affected by seasons and the environment, and it is easy to emit stench and breed mosquitoes, etc., causing adverse effects on the surrounding environment. The underground infiltration system is a kind of land treatment system artificially constructed. It uses the interaction between microorganisms and plants to degrade pollutants through chemical and physical methods. It has the characteristics of low investment cost and good water quality. However, the underground infiltration system also has problems that cannot be solved, such as large area, improper maintenance, and groundwater pollution. Artificial wetlands are artificially built pools or trenches, with an anti-seepage water-proof layer laid on the bottom, filled with a certain depth of substrate as a filler layer, and planted with vascular plants such as reeds or aquatic plants with well-developed roots. Sewage enters from one end of the wetland through water distribution pipes and canals, and in a push-flow manner, it contacts the substrate surface covered with biofilm and dissolved oxygen to fully contact the plant root zone to obtain a purified ecosystem. It has the characteristics of good treatment effect, small investment cost and simple technical process. It uses the interaction of plants, microorganisms and substrates in the system to achieve the purpose of purifying water under the synergy of physics, chemistry and biology. Constructed wetlands purify the water body and beautify the environment at the same time, achieving the dual benefits of environment and economy. However, constructed wetlands also have disadvantages such as large floor area, small water intake load, easy clogging, short operation cycle, and unstable treatment effect. At the same time, the treatment effect is easily affected by temperature and season.

To sum up, the problems existing in the existing technology are: constructed wetlands also have disadvantages such as large floor area, small water intake load, easy clogging, short operation cycle, unstable treatment effect, etc., and the treatment effect is easily affected by temperature and seasons .

Contents of the invention

Aiming at the problems existing in the prior art, the utility model provides an integrated combined wetland domestic sewage treatment system.

The utility model is achieved in this way. It is an integrated combined wetland domestic sewage treatment system. The integrated combined wetland domestic sewage treatment system includes a bed with a water-proof function and three left, middle and right sides built on the bed. units;

Two adjacent units of the three units on the left, middle and right are vertically separated by a partition;

The left unit includes a water inlet device and a regulating tank;

The left unit is a regulating pool, connected to the water inlet device, the water inlet pipe reaches the bottom of the pool, the pool is filled with high-quality filler, and a fine grid is installed in the pool;

The intermediate unit includes a stable surface flow pool and a subsurface flow pool;

The middle unit is horizontally divided into upper and lower parts by a partition, the upper part is a stable surface flow pool, and the lower part is a submerged flow pool; the stable surface flow pool is equipped with a water inlet device and a water outlet device, and the water inlet device and the submersible pump The connection is used to lift the effluent treated by the submerged flow pool to the stable surface flow pool, and the water outlet device is used to discharge the clean water treated by the system out of the system; the stable surface flow pool and the submerged flow pool are divided into upper and lower two by a horizontal partition The unit is filled with stable surface flow pool matrix and subsurface flow pool matrix respectively to form a stable surface flow wetland and a subsurface flow artificial wetland; the stable surface flow wetland is equipped with several baffles parallel to each other and perpendicular to the water flow direction according to the treatment requirements, At the same time, there are water purification plants with water purification function;

The right unit is a sump.

Further, the water inlet device is composed of a water inlet pipe and a flow regulating valve, installed on the upper front end of the bed body of the distributed domestic sewage treatment system, and the end of the water inlet pipe reaches the bottom of the system; the flow regulating valve is installed on the water inlet pipe.

Further, a hole is opened on the pool wall connecting the regulating pool and the submerged flow pool to connect the water distribution pipe; at the same time, a fine grid is installed at a certain angle at a position 1/3 from the upper end of the regulating pool; the pool is filled with YJ new suspended microbial filler.

Further, the submerged flow pool is equipped with a water distribution device, which is composed of a water distribution pipe and a water distribution hole. The water distribution pipe is connected to the regulating tank, and the sewage enters the submerged flow pool evenly through the water distribution hole on the water distribution pipe; the pool wall connected to the submerged flow pool and the sump A number of water collection holes are opened in the horizontal direction in the middle.

Further, a water distribution device is installed on the pool wall where the sump pool is connected to the stable surface flow pool, and is connected to the submersible pump. The sewage is lifted to the water distribution device by the submersible pump, and enters the stable surface flow pool evenly through the water distribution holes on the water distribution pipe. ; Control the amount of sewage entering the stable meter flow pool by adjusting the flow regulating valve on the water distribution device.

Further, several baffles are provided in the stable surface flow pool as required, and the baffles are parallel to each other and perpendicular to the direction of water flow. One end of the baffles is connected to the inner wall of the system bed, and the other end is connected to the inner wall of the corresponding inner wall. There is a certain gap between them to form a flow passage, and the two adjacent baffles are connected to the inner walls of different sides of the system respectively.

Further, the water outlet device is installed at the water outlet end of the stable meter flow pool, and is composed of a clean water discharge pipe, a water collection pipe, a water collection hole and a flow regulating valve.

The advantages and positive effects of the utility model are as follows: it includes a bed body with water-proof function and three units on the left, middle and right side built on the bed body. The left unit includes a water inlet device and a regulating tank, the middle unit includes a stable surface flow tank and a subsurface flow tank, and the right unit is a sump. The stable surface flow pool and the subsurface flow pool are divided into upper and lower units by a horizontal partition, which are respectively filled with a stable surface flow pool matrix and a subsurface flow pool matrix to form a stable surface flow wetland and a subsurface flow constructed wetland; the stable surface flow wetland is based on For processing requirements, several baffles parallel to each other and perpendicular to the water flow direction are installed, and water purification plants with water purification functions are planted at the same time. The utility model has the advantages of strong impact resistance, small floor area, strong silting resistance, good effluent quality, etc.; it can effectively solve the problems of low organic load in the stable pond and possible groundwater pollution by the underground infiltration system, and can effectively Solve the problems of large occupied area, easy blockage, short operation period and unstable operation of constructed wetland; in addition, the system effectively integrates the anaerobic adjustment pool of the pretreatment unit, and there is no need to build another pretreatment unit outside the system, saving land resources .

The utility model integrates the regulating pool into one body, and there is no need to build a sewage pretreatment process in the project, which saves land resources; the structure is simple, and it is easy to modularize production; it can effectively solve the problem that the distributed domestic sewage is not easy to be collected by the urban sewage pipe network and centralized treatment is not easy. For economical issues, decentralized domestic sewage can be treated on-site to meet the standard discharge or reuse, and the treated sewage can be used for greening and landscape water, realizing the utilization of sewage resources.

Description of drawings

Figure 1 is a schematic structural view of the integrated combined wetland domestic sewage treatment system provided by the embodiment of the utility model;

Fig. 2 is a schematic top view of Fig. 1 provided by the embodiment of the present invention;

Fig. 3 is a schematic side view of Fig. 1 provided by the embodiment of the present invention;

Fig. 4 is a schematic diagram of the water distribution device provided by the embodiment of the utility model;

In the figure: 1. Bed body of integrated combined wetland domestic sewage treatment system; 2. Regulating pool; 3. Submerged flow pool; 4. Collecting pool; 5. Subsurface flow pool; YJ new type of suspended microbial filler; 9. Anti-seepage layer; 10. First subsurface flow pool matrix; 11. Second subsurface flow pool matrix; 12. Third subsurface flow pool matrix; 13. Horizontal partition; Pump; 16. Water distribution device; 17. The first flow regulating valve; 18. Baffle; 19. The matrix of the first stable surface flow pool; 20. The matrix of the second stable surface flow pool; 21. The third stable surface flow pool Substrate; 22. First water purification plant; 23. Second water purification plant; 24. Water outlet device; 25. Flow regulating valve; 26. Water inlet device; 27. Second flow regulating valve; 28. Water collection pipe; 29. Water collecting hole; 30, water distribution pipe of the stable surface flow pool; 31, water distribution hole of the stable surface flow pool; 32, water distribution pipe of the subsurface flow pool; 33, water distribution hole of the submerged flow pool.

detailed description

In order to further understand the invention content, characteristics and effects of the present utility model, the following examples are given, and detailed descriptions are given below in conjunction with the accompanying drawings.

Below in conjunction with accompanying drawing, the structure of the present utility model is described in detail.

As shown in Figures 1 to 4, the integrated combined wetland domestic sewage treatment system provided by the embodiment of the utility model includes a bed body with a water-proof function after anti-seepage treatment and a water inlet device 26 built on the bed body. Pool 2, stable surface flow pool, subsurface flow pool 5, sump pool 4, water outlet device 24. The bed body mainly isolates the connection between the system and the groundwater, avoids polluting the groundwater, and at the same time plays the role of carrying other units of the system; the water inlet device 26 is mainly connected with the sewage collection pipeline, and the sewage is introduced into the system; the anaerobic adjustment The pool plays the role of storage, buffering and settlement, and at the same time, the sewage is evenly introduced into the subsurface flow pool 5 through the water distribution device 6; the subsurface flow pool 5 and the stable surface flow pool are respectively filled with the subsurface flow pool matrix and the stable surface flow pool matrix to form an underflow Constructed wetland and stable surface flow wetland; the stable surface flow wetland is planted with water purification plants, which play the role of interception, adsorption, and oxygen delivery to the bed body; the stable surface flow pool matrix filled by the stable surface flow pool plays the role of adsorption , intercept, fix the root system of water purification plants, and provide the attachment points for microbial growth; the subsurface flow pool matrix filled in the subsurface flow pool 5 plays the role of adsorption, interception, and providing attachment points for microbial growth; the sump 4 and The subsurface flow pool 5 is connected to collect the treated effluent from the subsurface flow pool 5 and settle suspended solids; the water outlet device 24 is connected to the stable surface flow pool to discharge the treated clean water out of the system.

The water inlet device 26 is installed on the bed body of the system and is connected with the regulating pool 3, and is composed of a water inlet pipe and a flow regulating valve 17. The water inlet pipe is connected with the sewage collection pipe network to introduce sewage into the system, and the flow regulating valve 17 can control The amount of sewage in the system.

A fine grid 7 is installed at a certain height and at a certain angle in the regulating pool 2, and the pool is filled with YJ new-type suspended microbial filler 8, which plays the role of intercepting large particle suspended matter, providing attachment points for microbial growth, and further protecting the system; A hole is opened in the pool wall connected to the pool 5, which is connected with the water distribution device 6, and the sewage evenly enters the subsurface flow pool through the water distribution hole on the water distribution pipe.

The subsurface flow pool matrix is filled in the subsurface flow pool 5 to form an underflow artificial wetland. The subsurface flow pool matrix is crushed stone (Φ5-10mm), zeolite (Φ10-15mm) and clay floating ball (Φ10-20mm), and the filling thickness ratio is 1:2:2; a number of water collecting holes are opened horizontally in the middle of the pool wall connected to the sump 4 for introducing the effluent treated by the subsurface flow constructed wetland into the sump 4 .

The sump 4 plays the role of storing, buffering, and settling suspended matter, which can prevent the clogging of the stable surface flow pool and increase the system's resistance to clogging; a lift pump 15 is installed in the sump 4 to connect with the stable surface flow pool. The water distribution device 6 is connected to each other, and the water is evenly distributed to the stable surface flow pool through the water distribution holes on the water distribution pipe.

The stable surface flow pool is filled with a stable surface flow pool matrix to form a stable surface flow wetland. The stable surface flow pool matrix is gravel (Φ5-10mm), zeolite (Φ10-15mm) and clay float (Φ10mm) from top to bottom. ~20mm), the filling thickness ratio is 1:1:2.

According to specific treatment requirements, several baffles parallel to each other and perpendicular to the flow direction are installed in the stable surface flow wetland. One end of the baffle is connected to one end of the stable surface flow wetland pool wall, and the other end is left There is a certain gap to form a flow channel, and two adjacent baffles are connected to different side pool walls of the stable surface flow wetland, so that the positions of the flow channels formed by the adjacent two baffles are opposite, so that several flow channels Together with the baffle area formed between the baffles, they form a serpentine channel, which can make the sewage flow in a meandering manner along the serpentine channel in the stable surface flow wetland, so as to increase the water flow path, thereby prolonging the hydraulic retention time.

The water outlet device 24 is installed at the water outlet end of the stable surface flow pool, and is composed of a water collection pipe 28, a water collection hole 29, a clean water discharge pipe and a flow regulating valve. The stable surface flow wetland water outlet can be collected by the water collection hole 29 on the water collection pipe. Discharge the system through the clean water discharge pipe, and the flow regulating valve installed on the clean water discharge pipe can adjust the clean water flow of the discharge system.

Among the water purification plants, the emergent plants can be selected from umbrella grass, water onion, aquatic canna, reed, etc., and the floating plants can be selected from echinacea, water hyacinth, duckweed, etc. according to the treatment requirements.

Below in conjunction with accompanying drawing, the application principle of the present utility model is further described.

As shown in Figures 1 to 4, the utility model mainly includes a wetland bed with water isolation function and a water inlet device, a regulating pool, a stable surface flow pool, a subsurface flow pool, a water collection pool, and a water outlet device built on the bed. A water inlet device 26 and a water outlet device 24 are installed on the bed body. The water inlet device 26 is mainly connected with the pipe network that provides sewage, and the sewage is introduced into the regulating pool 2 in the system. The flow regulating valve 27 on the water inlet device plays a role. The role of controlling the amount of sewage entering the system; the regulating pool 2 plays the role of buffering and settling suspended matter, so as to enhance the impact resistance and silting resistance of the submerged flow pool, so as to prolong the service life of the submerged flow pool, and at the same time adjust the pool and submerged flow A hole is opened on the wall of the pool connected to the pool, which is connected with the water distribution device 6 of the submerged flow pool, and the sewage enters the submerged pool evenly through the water distribution hole 33 on the water distribution pipe 32; a fine grid 7 is installed at a certain height in the adjustment pool 2 at a certain angle , can play a role in filtering large particles of suspended matter and enhancing the removal of suspended matter in the regulating tank, further reducing the risk of silting in the subsurface flow pool. The stable surface flow pool and the subsurface flow pool are horizontally separated by a horizontal partition 13 .

The submerged flow pool 3 is equipped with a water distribution device 6 filled with high-quality fillers 10, 11, 12, and the treated water enters the sump 4 through the water collection hole 14. The sump 4 mainly collects the sewage treated by the submerged flow pool, and plays the role of water collection, buffering and settlement, so as to enhance the impact resistance and silting resistance of the stable surface flow pool. A lift pump 15 is installed in the pool to connect with the stable surface flow The pool water distribution device 16 is connected to each other, through the water distribution hole 31 on the water distribution pipe 30 of the stable surface flow pool, evenly enters water into the stable surface flow pool. According to the treatment requirements, several baffles 18 parallel to each other and the direction of water flow are installed in the stable surface flow pool, and emergent plants 23 and floating plants 22 are planted, filled with high-quality substrates 19, 20, 21, and the baffles 18 cooperates with the wall of the stable surface flow pool to form a serpentine waterway, which prolongs the water flow path and increases the hydraulic retention time; the water purification plants 23 and 22 can degrade pollutants through assimilation, and pass through under photosynthesis The vascular bundle transports oxygen to the root system, increases the dissolved oxygen content of the sewage in the bed, and forms an aerobic microzone near the root zone, which is conducive to the symbiosis of different types of microorganisms. In addition, the plant root system can also provide attachment points for the growth of microorganisms; the substrate 19 , 20, 21 are capable of degrading pollutants through adsorption and chemical action while providing attachment points for microbial growth. The water outlet device 24 is installed at the water outlet end of the stable surface flow pool, and is connected with the water collection pipe 28 of the stable surface flow pool.

A fine grid 7 is installed at a certain height in the regulating pool 2 at a certain angle. The regulating pool 2 mainly plays the role of buffering and settling, and enhances the impact resistance and silting resistance of the submerged flow pool to prolong the life of the submerged flow pool. At the same time, the regulating pool is connected with the subsurface flow pool, which can effectively reduce the suspended solids entering the subsurface flow pool, and further reduce the risk of silting of the subsurface flow pool.

A hole is opened on the pool wall where the regulating pool 2 is connected with the submerged flow pool 3, and is connected with the submerged flow pool water distribution device 6.

A plurality of water collection holes 14 are opened in the horizontal direction in the middle part of the pool wall where the submerged flow pool 3 is connected to the sump pool 4, so that the processed effluent of the submerged flow pool enters the sump pool.

The sump 4 mainly plays the role of collecting the outlet water of the submerged flow pool and settling suspended solids; a lift pump 15 is installed in the pool, connected to the water distribution device 16 of the stable surface flow pool, and the water is lifted to the water distribution device through the water distribution pipe 30. The water distribution holes 31 evenly enter the stable surface flow pool.

According to specific processing requirements, several baffles 18 parallel to each other and perpendicular to the water inlet direction are installed in the stable surface flow pool. One end of the baffle plate 18 is connected to the pool wall of the stable surface flow pool, and the other end is connected to the corresponding There is a certain gap between the pool walls to form a water passage; the adjacent two baffles 18 are respectively connected to the pool walls on different sides of the stable surface flow pool, so that the position of the flow passage formed by the adjacent two baffles 18 On the contrary, the baffle areas formed between several flow passages and the baffles together form a serpentine waterway, so that the sewage flows in a zigzag manner along the space formed by the baffles 18, which effectively prolongs the water flow path and increases hydraulic retention. time.

The water outlet device 24 is installed at the water outlet of the stable meter flow pool 5, mainly serving as a discharge system for the purified water treated in the stable meter flow pool. The flow is controlled by the flow regulating valve 25 on the water outlet device 24, and the hydraulic retention time is adjusted at the same time.

The matrix 21 of the stable surface flow pool is gravel, and the matrix 19 and 20 can be freely combined in gravel, zeolite, blast furnace slag, cobblestone, and clay float according to specific requirements.

The subsurface flow pools 10, 12, 13 can be freely combined in gravel, zeolite, blast furnace slag, pebbles, gravel, and clay floats according to specific requirements.

The emergent plants 23 of the stable surface flow wetland can be selected from umbrella grass, water onion, aquatic canna, reed, etc. according to the processing requirements, and the floating plants 22 can be selected from large scallions, water hyacinth, duckweed, etc. according to the processing requirements.

The utility model adopts an integrated combined wetland domestic sewage treatment system with small footprint, strong impact resistance and silting resistance. The water inlet device, regulating pool, stable surface flow pool, subsurface flow pool, sump pool, and water outlet device constructed by the bed body. The anaerobic regulating tank is at the left end of the system, which plays the role of buffering and settling, can effectively remove suspended solids in the sewage, increase the impact resistance and silting resistance of the submerged flow tank, and simultaneously pass the water distribution pipe 32 of the water distribution device 6 The water distribution hole 33 is the uniform water intake of the submerged flow pool; the stable surface flow pool and the submerged flow pool are separated into upper and lower parts by a horizontal partition 13, and the stable surface flow pool matrix 19, 20, 21 and the submerged flow pool matrix 10, 11 and 12, form a stable surface flow wetland and subsurface flow artificial wetland; the upper part is a stable surface flow pool, install several baffles 18 parallel to each other and perpendicular to the direction of water flow according to the treatment requirements, and plant different water purification plants in the baffle area 22 and 23; any water purification plants are not planted in the subsurface flow pool in the lower part. The sump can settle the suspended solids in the sewage, so as to prevent the clogging of the stable surface flow pool. The system adopts the mode of bottom water inlet and top water outlet. The layout of each unit of the system is compact, the regulating pool is organically integrated, the floor area is reduced, and the land resources are greatly saved. The synergistic effect of each unit makes the system have strong impact resistance and silting resistance.

The application effects of the present invention will be described in detail below in conjunction with specific embodiments.

Build a set of integrated combined wetland domestic sewage treatment system, the overall design of the integrated combined wetland domestic sewage treatment system is a cuboid, specific dimensions: length 210cm, width 100cm, depth 110cm.

The integrated wetland domestic sewage treatment system adopts a brick-concrete structure, and the regulating pool is 100cm long, 20cm wide, and 90cm high; The subsurface flow pool 3 is divided into upper and lower parts; the stable surface flow pool is 180cm long, 100cm wide, and 40cm high; the subsurface flow pool is 180cm long, 100cm wide, and 60cm high. A hole with a diameter of 5cm is opened on the upper left side of the subsurface flow pool to connect with the water distribution device , a number of water outlet holes with a diameter of 2cm are opened horizontally in the middle of the right end pool wall; the baffle is a plastic plate, 90cm long, 50cm wide, and 3cm thick, which can be freely disassembled and installed according to the processing requirements; the sump 4 is 100cm long, 10cm wide, and high 90cm.

The stable surface flow pool is equipped with 6 baffle plates 18 parallel to each other and perpendicular to the water inlet direction. One end of the baffle plate 18 is connected to a pool wall of the stable surface flow pool, and the other end is left with another pool wall. A gap of 10 cm forms a flow passage; two adjacent baffles 18 are respectively connected to different side walls of the stable surface flow pool, so that the positions of the flow passages formed by the adjacent two baffles 18 are opposite, thereby making the six flow passages The baffle area formed between the flow channel and the baffle plate together forms a serpentine waterway, so that the sewage entering the stable surface flow pool flows along the serpentine waterway, thereby increasing the hydraulic retention time by extending the water flow path.

The utility model adopts the method of water inflow from the bottom and water out from the top to treat the sewage. During the sewage treatment process, the sewage to be treated enters the system through the water inlet device 26, and is evenly mixed in the regulating tank 2. Organic matter, phosphorus, nitrogen and suspended solids. The water distribution hole 33 on the water distribution pipe 32 of the water distribution device 6 evenly enters the subsurface flow pool 3, and under the action of gravity, the sewage fully contacts with the substrate of the subsurface flow pool, and the subsurface flow pool substrates 10, 11, and 12 will suspend most of them through adsorption and sedimentation. Since the subsurface flow pool does not plant water purification plants and is located in the lower layer of the system, the interior of the subsurface flow constructed wetland is mainly anoxic and anaerobic. Oxygen respiration removes organic matter in the water flow, while denitrifying bacteria are highly active in anoxic and anaerobic environments and can remove most of the nitrogen; phosphorus can be adsorbed and precipitated by the substrate of the subsurface flow pool; the water treated by the subsurface flow pool is The water collecting hole enters the sump. Under the action of the lift pump, the effluent from the submerged flow pool collected by the sump enters the stable surface flow pool evenly through the water distribution hole 31 on the water distribution pipe 30 of the water distribution device 16, and the stable surface flow pool can increase the hydraulic retention time due to the installation of the baffle plate 18 , let the water flow fully contact with the stable surface pool matrix 19, 20, 21 and the water purification plants 22, 23, settle down most of the suspended solids, stabilize the surface flow pool matrix 19, 20, 21 and the water purification plant 22, 23 root system Surface-attached microorganisms are capable of adequately degrading organic matter, nitrogen, and phosphorus in the water stream. The clean water treated by the stable surface flow tank is collected by the water collection hole 33 on the water collection pipe 32 and then discharged out of the system through the water outlet device 24 .

The above descriptions are only preferred embodiments of the present utility model, and are not intended to limit the present utility model in any form. Any simple modifications made to the above embodiments according to the technical essence of the present utility model are equivalent to changes and modifications. All belong to the scope of the technical solution of the utility model.

Claims (7)

1. An integrated combined wetland domestic sewage treatment system, characterized in that the integrated combined wetland domestic sewage treatment system includes a bed with water isolation function and three units on the left, middle and right built on the bed ; Two adjacent units of the three units on the left, middle and right are vertically separated by a partition; The left unit includes a water inlet device and a regulating tank; The left unit is a regulating pool, connected to the water inlet device, the water inlet pipe reaches the bottom of the pool, the pool is filled with high-quality filler, and a fine grid is installed in the pool; The intermediate unit includes a stable surface flow pool and a subsurface flow pool; The middle unit is horizontally divided into upper and lower parts by a partition, the upper part is a stable surface flow pool, and the lower part is a submerged flow pool; the stable surface flow pool is equipped with a water inlet device and a water outlet device, and the water inlet device and the submersible pump The connection is used to lift the effluent treated by the submerged flow pool to the stable surface flow pool, and the water outlet device is used to discharge the clean water treated by the system out of the system; the stable surface flow pool and the submerged flow pool are divided into upper and lower two by a horizontal partition The unit is filled with stable surface flow pool matrix and subsurface flow pool matrix respectively to form a stable surface flow wetland and a subsurface flow artificial wetland; the stable surface flow wetland is equipped with several baffles parallel to each other and perpendicular to the water flow direction according to the treatment requirements, At the same time, there are water purification plants with water purification function; The right unit is a sump. 2. The integrated combined wetland domestic sewage treatment system according to claim 1, wherein the water inlet device is composed of a water inlet pipe and a flow regulating valve, and is installed on the upper front end of the bed of the distributed domestic sewage treatment system. The end of the water inlet pipe reaches the bottom of the system; the flow regulating valve is installed on the water inlet pipe. 3. The integrated combined wetland domestic sewage treatment system as claimed in claim 1, characterized in that, a hole is opened on the wall of the pool connected to the submerged flow pool to connect the water distribution pipe; at the same time, it is 1/2 from the upper end of the regulating pool. 3. A fine grid is installed at a certain angle; the pool is filled with YJ new suspended microbial filler. 4. The integrated combined wetland domestic sewage treatment system as claimed in claim 1, characterized in that the submerged flow pool is equipped with a water distribution device, which consists of a water distribution pipe and a water distribution hole, the water distribution pipe is connected to the regulating tank, and the sewage passes through the water distribution pipe The water distribution holes on the top evenly enter the subsurface flow pool; several water collection holes are opened horizontally in the middle of the pool wall where the subsurface flow pool and the sump pool are connected. 5. The integrated combined wetland domestic sewage treatment system as claimed in claim 1, characterized in that a water distribution device is installed on the wall of the pool connected to the stable surface flow pool, which is connected with a submersible pump, and the sewage passes through the submersible pump Lift to the water distribution device, and evenly enter the stable surface flow pool through the water distribution holes on the water distribution pipe; control the amount of sewage entering the stable surface flow pool by adjusting the flow regulating valve on the water distribution device. 6. The integrated combined wetland domestic sewage treatment system as claimed in claim 1, characterized in that several baffles are arranged in the stable surface flow pool as required, and the baffles are parallel to each other and aligned with the direction of water flow. Vertical, one end of the baffle is connected to the inner wall of the system bed, and a certain gap is left between the other end and the corresponding inner wall to form a flow passage, and two adjacent baffles are respectively connected to the inner wall of the system on different sides. 7. The integrated combined wetland domestic sewage treatment system as claimed in claim 1, characterized in that the water outlet device is installed at the water outlet end of the stable meter flow pool, and is composed of a clean water discharge pipe, a water collection pipe, a water collection hole and a flow regulating valve .