CN212833276U

CN212833276U - Landscape type modularized biological carbon multistage artificial wetland automatic treatment system

Info

Publication number: CN212833276U
Application number: CN201922472855.5U
Authority: CN
Inventors: 利锋; 刘思梦
Original assignee: South China University of Technology SCUT
Current assignee: South China University of Technology SCUT
Priority date: 2019-12-31
Filing date: 2019-12-31
Publication date: 2021-03-30
Anticipated expiration: 2029-12-31

Abstract

The utility model discloses a view formula modular multistage constructed wetland automated processing system of biological carbon. The system mainly comprises a sewage pretreatment unit, a vertical flow artificial wetland unit, a horizontal undercurrent artificial wetland unit, an ecological stabilization pond unit, a purified water treatment unit and an ecological purified water storage and reuse unit. In the system, the sewage purification capacity of the unit can be greatly improved by adding biochar in a vertical flow artificial wetland substrate and installing a solar electrode plate; meanwhile, water level sensors and water quality monitors are installed on the artificial wetland and the ecological pond units to monitor the water quantity and the water quality so as to carry out automatic water feeding and supplementing; the artificial wetland unit can be disassembled and replaced, the filler is convenient to replace, the problems of blockage and the like can be avoided, and the modular production can be realized; the system device can effectively purify sewage, is convenient to operate and has ornamental value.

Description

Landscape type modularized biological carbon multistage artificial wetland automatic treatment system

Technical Field

The utility model belongs to the technical field of constructed wetland sewage treatment technique and specifically relates to a view formula modular multistage constructed wetland automated processing system of biological carbon.

Background

With the development of economy and the improvement of the living standard of people, the yield of production and domestic sewage is increased day by day, especially in the great bay area of Guangdong, Hongkong and Macao where the economic opening degree is highest and the vitality is strongest in China. The demand for water supply in the Guangdong, Hongkong, Australia and Bay areas is large, and the life and economic development of people are seriously influenced by the safety of water supply. The industrial and agricultural production and human activities developed in the Bay of hong Kong and Australia in Guangdong produce a large amount of production and domestic sewage, and the unreasonable discharge of the sewage causes the environmental water body to be seriously threatened, thus leading to the extremely poor water quality of the Zhujiang Kong. Wherein eutrophication of water quality is one of the most serious water quality problems. Therefore, the solution of sporadic production and domestic sewage is of great strategic importance for improving the ecological environment of the gulf area and the quality of life of people.

Artificial wetlands are the most important and common ecological restoration projects. However, the method also has some problems, such as easy blockage in the operation process, the growth cycle of plants, plant diseases and insect pests and the like, and the normal operation of the artificial wetland can be influenced if the plants in the wetland are not managed and harvested in time. Wetland plants have been returned to fields or incinerated directly for a long time, which causes pollution to the environment and waste of resources. The waste recycling is a hot door of current treatment, the biochar is taken as a novel environment functional material and is widely applied to treatment of waste water, waste gas and soil pollution, the biochar is prepared by taking wetland harvested plants as a raw material and is taken as a wetland matrix, the water retention property can be enhanced, the porosity and the air permeability can be improved, removal of pollutants by wetland plants and microorganisms is promoted, the adsorption pressure of the wetland matrix is relieved, the running time of the artificial wetland is prolonged, and meanwhile, the resource recycling is realized. Therefore, the design of the landscape type modularized biochar multistage artificial wetland automatic treatment system is very important.

SUMMERY OF THE UTILITY MODEL

The to-be-solved technical problem of the utility model is to provide a modularization view formula all-weather automatic multilevel processing constructed wetland system for rural domestic sewage purification in water source ground and cyclic utilization.

The utility model provides a technical scheme that its technical problem adopted is:

a landscape type modularized biochar multistage artificial wetland automatic treatment system comprises a sewage pretreatment unit, a vertical flow artificial wetland unit, a horizontal subsurface flow artificial wetland unit, an ecological stabilization pond unit, a water purification treatment unit and an ecological purified water storage and reuse unit; the vertical flow artificial wetland unit, the horizontal undercurrent artificial wetland unit and the ecological stabilization pond unit are vertically arranged from top to bottom, and the water purification treatment unit and the ecological purified water storage and reuse unit are arranged on the left and right and are positioned below the ecological stabilization pond unit;

surface runoff sewage and domestic sewage can be conveyed to a sewage treatment unit, the sewage is pretreated and regulated and then is conveyed to a vertical flow artificial wetland unit for purification treatment, water is conveyed to a horizontal subsurface flow artificial wetland unit for purification treatment through an overflow pipe and a connecting pipe after purification, the water is conveyed to an ecological stabilization pond unit through the overflow pipe and the connecting pipe after purification, the water after purification treatment enters a water purification treatment unit for purification treatment again, and finally the ecological purified water after purification treatment is conveyed to an ecological purified water storage and reuse unit for system supply and other uses.

Further, the sewage pretreatment unit comprises a sewage interception tank, a grid plate, a sewage storage tank, an anaerobic treatment chamber, an oxygen consumption treatment chamber and a regulating chamber; a grating plate is arranged between the sewage interception tank and the sewage storage tank, the anaerobic treatment chamber is connected with the sewage storage tank, and the oxygen consumption treatment chamber is positioned below the anaerobic treatment chamber; the regulating chamber is connected with the oxygen consumption treatment chamber; a sewage inlet is formed in the upper top surface of the sewage intercepting tank; a sewage draining outlet is formed in the lower bottom surface of the sewage intercepting tank; an anaerobic treatment chamber water inlet is arranged between the anaerobic treatment chamber and the sewage storage pool; the anaerobic treatment chamber and the oxygen consumption treatment chamber are internally and transversely provided with clapboards;

sewage enters the sewage intercepting tank through the sewage inlet, enters the sewage storage tank after being intercepted and treated by the grating plate, the intercepted matters are cleaned through the sewage outlet, the sewage in the sewage storage tank enters the anaerobic treatment chamber through the water inlet of the anaerobic treatment chamber, the sewage enters the oxygen consumption treatment chamber through the water outlet after being subjected to anaerobic treatment, the sewage is fully subjected to oxygen consumption treatment through the partition plate, and then enters the mediation chamber through the water outlet to regulate the water quality.

Further, the vertical flow artificial wetland unit comprises a carbon steel plate box body, a solar cell panel, an anode plate, a cathode plate, a water level sensor, a water quality sensor, a water distribution pipe and a water collection pipe; the solar cell panel is arranged on the periphery of the cylindrical box body and is connected with the anode plate and the cathode plate in the cylindrical box body; the solar component comprises a solar plate arranged on the periphery of the box body and is connected with an anode plate and a cathode plate arranged in the vertical flow artificial wetland through waterproof conduits; a water distribution pipe is arranged at the upper layer inside the cylindrical tank body, and a water collection pipe is arranged at the bottom layer; the water level sensor and the water quality sensor are arranged on the inner side wall of the box body, and when the water level is lowered to a certain height, the water inlet device and the water replenishing device are triggered. When the water pollution concentration is too high, triggering a water replenishing device to further adjust the water quality; the water distribution pipe is arranged on the upper layer of the vertical flow artificial wetland unit, and the water collection pipe is arranged on the bottom layer of the vertical flow artificial wetland unit; an aeration unit is arranged at the central position in the vertical flow artificial wetland unit; an overflow unit is arranged on the periphery of the bottom layer of the cylindrical box body; the interior of the cylindrical box body is filled with a substrate.

Further, the matrix is provided in three layers: the bottom layer is quartz sand with the particle size of 150-; the wetland plant is typha orientalis, and the planting density is 10-15 plants/m²。

Furthermore, the overflow unit consists of an overflow surface and water guide pipes, the overflow surface is an annular plane of the overflow unit arranged at the bottom layer of the box body, the water guide pipes are uniformly distributed in the overflow surface, and water flow is sent to the overflow surface through the water guide pipes to form an overflow landscape; the water guide pipes distributed annularly are connected with a water outlet pipe inside the vertical flow artificial wetland, and a higher-level treatment water body is delivered to a lower-level treatment unit through the water outlet pipe and overflow water.

Furthermore, the horizontal subsurface flow constructed wetland unit comprises a cylindrical box body made of carbon steel plates, a water level sensor, a water quality sensor and an overflow unit; the inside of the cylindrical box body is filled with a substrate, and wetland plants are planted on the upper layer of the cylindrical box body; the water level sensor and the water quality sensor are arranged on the inner side wall of the box body; the overflow unit is arranged on the outer side of the bottom layer of the box body; an annular overflow surface and a water guide pipe distributed annularly are arranged in the overflow unit, and the water guide pipe is connected with a higher-level water outlet pipe;

the substrate is pond sludge with the particle size of 100-150 mm; the wetland plants are water hyacinth; and an aeration device is also arranged in the box body.

Furthermore, the ecological stabilization pond unit comprises a cylindrical box body made of a carbon steel plate, a water level sensor, a water quality sensor, a cleaning mechanical arm and an aeration device; the water level sensor and the water quality sensor are arranged on the inner side wall of the box body; the cleaning mechanical arm is arranged on the upper part of the periphery of the box body, and the cleaning mechanical arm is arranged on the peripheral part of the upper part of the box body, so that fallen leaves, withered branches and the like of plants can be cleaned conveniently and timely. The aeration device is arranged at the central position of the ecological stabilization pond unit.

Furthermore, the water purification treatment unit comprises a water inlet of the water purification chamber, a water purification treatment filter material layer unit and a water purification storage pool connecting port; the water purification treatment filter material layer unit comprises quartz sand, wood biochar, a ceramic filter element, quartz sand, wood biochar and a sixth ceramic filter element from top to bottom in sequence; the middle of each layer is filled and separated by non-woven cloth; finally, a non-woven fabric liner superposed with the nano-silver loaded fiber layer is arranged at the water outlet; valves are arranged at the connecting openings of the water inlet of the water purifying chamber and the purified water storage tank; the purified water storage tank is connected with the opening; the water inlet of the water purifying chamber is connected with the water outlet pipe of the upper ecological stabilization pond; the purified water storage tank connecting port is connected with the ecological purified water storage and reuse unit.

Furthermore, the ecological purified water storage and reuse unit is internally provided with a water delivery pipe connected to a water supply pipe, and meanwhile, the ecological purified water can be connected with the water delivery pipe through a water outlet for other use.

The utility model also comprises a power system, a water inlet regulating valve, a supply pipe and a water inlet pipe; the power system is connected with the aeration device; the regulating chamber is respectively connected with the vertical flow artificial wetland unit, the horizontal subsurface flow artificial wetland unit and the ecological stabilization pond unit through water inlet pipes; the ecological purified water storage and reuse unit is respectively connected with the vertical flow artificial wetland unit, the horizontal subsurface flow artificial wetland unit and the ecological stabilization pond unit through supply pipes; the supply pipe and the water inlet pipe are provided with water inlet regulating valves; the power system is a solar energy-electric energy combined power supply system; the aeration device is a blast aeration device.

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

the constructed wetland system can effectively treat total nitrogen and total phosphorus COD in rural domestic sewage in a drinking water source_Cr(ii) a In addition, in the system, biochar is added into a vertical flow artificial wetland substrate and a solar electrode plate is installed, so that the sewage purification capacity is greatly improved; water level sensors and water quality monitors are arranged on the artificial wetland and the ecological pond units to monitor the water quantity and the water quality so as to carry out automatic water feeding and supplementing; the artificial wetland unit can be disassembled and replaced, the filler is convenient to replace, the problems of blockage and the like can be avoided, and the modular production can be realized; the system device can effectively purify sewage, is convenient to operate and has ornamental value.

Drawings

Fig. 1 is a schematic elevation structure of the present invention;

fig. 2 is a schematic side view of the present invention;

fig. 3 is a schematic plane structure diagram of the vertical flow constructed wetland unit of the utility model;

fig. 4 is a schematic elevation structure view of the vertical flow constructed wetland unit of the utility model;

fig. 5 is a schematic plane structure diagram of the horizontal subsurface flow constructed wetland unit of the utility model;

fig. 6 is a schematic elevation structure view of the horizontal subsurface flow constructed wetland unit of the utility model;

fig. 7 is a schematic plan structure view of the eco-stabilization pond unit of the present invention;

fig. 8 is a schematic view of the vertical structure of the water purification unit of the present invention.

The various components in the figure are as follows: 1. a sewage inlet; 2. a grid plate; 3. a sewage interception tank; 4. a sewage draining outlet; 5. a sewage storage pool; 6. a water inlet of the anaerobic treatment chamber; 7. an air inlet; 8. an anaerobic treatment chamber; 9. an air outlet; 10. a partition plate; 11. an air inlet; 12. an oxygen-consuming processing chamber; 13. a regulating tank; 14. a power system; 15. a water inflow regulating valve; 16. a supply pipe; 17. a water inlet pipe; 18. an aeration device; 19. an ecological stabilization pond; 20. an overflow unit; 21. horizontal undercurrent artificial wetland; 22. vertical flow constructed wetlands; 23. a water outlet pipe; 24. a water purification treatment chamber; 25. an ecological water purification reservoir; 26. an ecological purified water outlet; 22-1, a carbon steel plate box body; 22-2, a water guide pipe; 22-3, a solar panel; 22-4, an anode plate; 22-5, a cathode plate; 22-6, a water level sensor; 22-7, a water quality monitoring sensor; 22-8 parts of typha orientalis; 22-9, garden soil; 22-10 parts of water distribution pipes; 22-11, waste wood biochar; 22-12, a water collecting pipe; 22-13 parts of quartz sand; 21-1, water hyacinth; 21-2, pond sludge; 19-1, cleaning a mechanical arm; 24-1, a water inlet of the water purifying chamber; 24-2, quartz sand; 24-3, filling non-woven fabrics; 24-4, biochar; 24-5, a ceramic filter element; 24-6, superposing a nano silver loaded fiber layer on the non-woven fabric pad; 24-7 and a purified water storage tank connecting port.

Detailed Description

The present invention will be described in detail with reference to the accompanying drawings.

The utility model discloses concrete structure as follows:

a landscape type modularized biochar multistage artificial wetland automatic treatment system comprises a sewage pretreatment unit, a vertical flow artificial wetland unit 22, a horizontal subsurface flow artificial wetland unit 21, an ecological stabilization pond unit 19, a purified water treatment unit 24 and an ecological purified water storage and reuse unit 25; the vertical flow artificial wetland unit 22, the horizontal subsurface flow artificial wetland unit 21 and the ecological stabilizing pond unit 19 are vertically arranged from top to bottom, and the water purification treatment unit 24 and the ecological purified water storage and reuse unit 25 are arranged from left to right and are positioned below the ecological stabilizing pond unit 19; surface runoff sewage and domestic sewage can be transportedAnd (2) sending the sewage to a sewage treatment unit, pretreating and adjusting the sewage, then pumping the sewage to a vertical flow artificial wetland unit 22 for purification treatment, sending the purified water to a horizontal subsurface flow artificial wetland unit 21 through an overflow pipe and a connecting pipe for purification treatment, sending the purified water to an ecological stabilization pond unit 19 through the overflow pipe and the connecting pipe, sending the purified water to a water purification treatment unit 24 for purification treatment again, and finally sending the purified ecological purified water to an ecological purified water storage and reuse unit 25 for system supply and other uses. The sewage pretreatment unit comprises a sewage interception tank 3, a grid plate 2, a sewage storage tank 5, an anaerobic treatment chamber 8, an oxygen consumption treatment chamber 12 and a regulating chamber 3; a grating plate 2 is arranged between the sewage interception tank 3 and the sewage storage tank 5, the anaerobic treatment chamber 8 is connected with the sewage storage tank 5, and the oxygen consumption treatment chamber 12 is positioned below the anaerobic treatment chamber 8; the conditioning chamber 13 is connected with the oxygen consumption treatment chamber 12; a sewage inlet 1 is formed in the upper top surface of the sewage intercepting tank 3; a sewage outlet 4 is formed in the lower bottom surface of the sewage intercepting tank 3; an anaerobic treatment chamber water inlet 6 is arranged between the anaerobic treatment chamber 8 and the sewage storage pool 5; the anaerobic treatment chamber 8 and the oxygen consumption treatment chamber 12 are internally and transversely provided with a partition plate 10; sewage enters a sewage intercepting pool 3 through a sewage inlet 1, enters a sewage storage pool 5 after being intercepted and treated by a grating plate, intercepted objects are cleaned through a sewage outlet 4, the sewage in the sewage storage pool 5 enters an anaerobic treatment chamber 8 through a water inlet 6 of the anaerobic treatment chamber, the sewage enters an oxygen consumption treatment chamber 12 through a water outlet after being subjected to anaerobic treatment, and the sewage is fully subjected to oxygen consumption treatment through a partition plate and then enters an adjusting chamber 13 through a water outlet to adjust the water quality. The vertical flow artificial wetland unit 22 comprises a carbon steel plate box body 22-1, a solar cell panel 22-3, an anode plate 22-4, a cathode plate 22-5, a water level sensor 22-6, a water quality sensor 22-7, a water distribution pipe 22-10 and a water collection pipe 22-12; the solar cell panel 22-3 is arranged at the periphery of the cylindrical box body 22-1, and the solar cell panel 22-3 is connected with the anode plate 22-4 and the cathode plate 22-5 in the cylindrical box body 22-1; a water distribution pipe 22-10 is arranged at the upper layer position in the cylindrical tank body 22-1, and a water collecting pipe 22-12 is arranged at the bottom layer position; the water level sensor 22-6 and the water quality sensor 22-7 are arranged on the inner side wall of the box body; the water distribution pipes 22-10 are arranged on the upper layer of the vertical flow artificial wetland unit 22, and the water collection pipes are arranged on the upper layerThe water pipes 22-12 are arranged on the bottom layer of the vertical flow artificial wetland unit 22; an aeration unit 18 is arranged in the central position inside the vertical flow artificial wetland unit 22; the periphery of the bottom layer of the cylindrical box body 22-1 is provided with an overflow unit 20; the inside of the cylindrical case 22-1 is filled with a matrix. The matrix is arranged into three layers: the bottom layer is quartz sand 22-13 with the particle size of 150-; the wetland plant 22-8 is typha orientalis L, and the planting density is 10-15 plants/m². The overflow unit 20 consists of an overflow surface and water guide pipes 22-2, the overflow surface is an annular plane of the overflow unit arranged at the bottom layer of the box body, the water guide pipes 22-2 are uniformly distributed, and water flow is sent to the overflow surface through the water guide pipes to form an overflow landscape; the water guide pipe 22-2 distributed around is connected with a water outlet pipe 23 in the vertical flow artificial wetland, and the upper-level treated water body is delivered to the lower-level treatment unit through the water outlet pipe 23 and the overflow water. The horizontal subsurface flow constructed wetland unit 21 comprises a cylindrical box body 22-1 made of carbon steel plates, a water level sensor 22-6, a water quality sensor 22-7 and an overflow unit 20; the inside of the cylindrical box body 22-1 is filled with a substrate, and wetland plants are planted on the upper layer; the water level sensor 22-6 and the water quality sensor 22-7 are arranged on the inner side wall of the box body; the overflow unit is arranged on the outer side of the bottom layer of the box body; an annular overflow surface and a water guide pipe 22-2 distributed annularly are arranged in the overflow unit 20, and the water guide pipe is connected with an upper-level water outlet pipe 23; the matrix is pond sludge 21-2 with the particle size of 100-150 mm; the wetland plant is water hyacinth 21-1; and an aeration device 18 is also arranged in the box body. The ecological stabilization pond unit 19 comprises a cylindrical box body 22-1 made of a carbon steel plate, a water level sensor 22-6, a water quality sensor 22-7, a cleaning mechanical arm 19-1 and an aeration device 18; the water level sensor 22-6 and the water quality sensor 22-7 are arranged on the inner side wall of the box body; the cleaning mechanical arm is arranged at the upper part of the periphery of the box body; the aeration device 18 is arranged at the central position of the ecological stabilization pond unit 19. The water purification treatment unit 24 comprises a water inlet 24-1 of a water purification chamber, a water purification treatment filter material layer unit and a water purification storage pool connecting port 24-7; the water purification treatment filter material layer unit is provided with quartz sand 24-2 from top to bottom in sequence24-4 parts of wood biochar, 24-5 parts of a ceramic filter element, 24-2 parts of quartz sand, 24-4 parts of wood biochar and 24-5 parts of a sixth layer of ceramic filter element; the middle of each layer is separated by 24-3 layers of non-woven fabric filling; finally, a non-woven fabric liner superposed with the nano-silver loaded fiber layer 24-6 is arranged at the water outlet; valves are arranged at the water inlet 24-1 of the water purifying chamber and the connecting port 24-7 of the purified water storage tank; the purified water storage tank is connected with the opening; the water inlet 24-1 of the water purifying chamber is connected with the water outlet pipe 23 of the upper ecological stabilization pond; the purified water storage tank connecting port 24-7 is connected with the ecological purified water storage and reuse unit 25. The ecological purified water storage and reuse unit 25 is internally provided with a water pipe connected to the water supply pipe 16, and meanwhile, the ecological purified water can be connected with the water pipe through a water outlet 26 for other purposes. The system also comprises a power system 14, a water inlet regulating valve 15, a supply pipe 16 and a water inlet pipe 17; the power system 14 is connected with an aeration device 18; the adjusting chamber 13 is respectively connected with a vertical flow artificial wetland unit 22, a horizontal subsurface flow artificial wetland unit 21 and an ecological stabilization pond unit 19 through a water inlet pipe 17; the ecological purified water storage and reuse unit 25 is respectively connected with the vertical flow artificial wetland unit 22, the horizontal subsurface flow artificial wetland unit 21 and the ecological stabilization pond unit 19 through the supply pipe 16; the supply pipe 16 and the water inlet pipe 17 are provided with a water inlet regulating valve 15; the power system 14 is a solar energy-electric energy combined power supply system; the aeration device 18 is a blast aeration device.

Example 1

As shown in fig. 1 and 2, the landscape type modularized biochar multistage artificial wetland automatic treatment system comprises sewage pretreatment units 1-13, a vertical flow artificial wetland unit 22, a horizontal subsurface flow artificial wetland unit 21, an ecological stabilization pond unit 19, a water purification treatment unit 24 and an ecological purified water storage and reuse unit 25. Surface runoff sewage and domestic sewage can be conveyed to a sewage treatment unit, the sewage is pretreated and regulated and then is pumped to a vertical flow artificial wetland unit 22 for purification treatment, the purified water is conveyed to a horizontal subsurface flow artificial wetland unit 21 through an overflow pipe and a connecting pipe for purification treatment, the purified water is conveyed to an ecological stabilization pond unit 19 through the overflow pipe and the connecting pipe, the purified water enters a water purification treatment unit 24 for purification treatment again, and finally the purified ecological water is conveyed to an ecological water purification storage and reuse unit 25 for system supply and other uses. The sewage pretreatment unit comprises a sewage interception tank 3, a grid plate 2, an anaerobic treatment chamber 7, an oxygen consumption treatment chamber 11 and a regulating chamber 12. The collected rural domestic water is pumped to a sewage intercepting tank 3 through a water inlet 1, sewage enters a sewage storage tank 5 through a grating plate, and garbage needing to be cleaned regularly can be conveyed from a sewage outlet 4. Water in the dirt storage pool enters an anaerobic treatment chamber 8 through a water inlet 6 to be treated, the anaerobic treatment chamber is provided with an air inlet 7 and an air outlet 9 to balance the air pressure in the treatment chamber, meanwhile, anaerobic treatment is internally provided with a water stop sheet 10, sewage flows through the water stop sheet and is conveyed to an oxygen consumption treatment chamber 12 through a water inlet valve, the oxygen consumption treatment chamber is provided with an air inlet 11 to convey oxygen indoors, the water stop sheet is arranged indoors, and the sewage flows through the water stop sheet and is conveyed to an adjusting chamber 13 through the water inlet valve. The regulated sewage is conveyed to an ecological stabilization pond 19, a horizontal subsurface flow constructed wetland 21 and a vertical flow constructed wetland 22 through a water inlet pipe 17. Each stage of water inlet pipe is provided with a flow meter 15 for controlling the water inlet speed, and each stage of water outlet pipe is provided with a flow valve for controlling the water outlet speed.

As shown in fig. 3 and 4, the vertical flow constructed wetland unit comprises a cylindrical box body 22-1 made of carbon steel plates, a solar cell panel 22-3 is arranged on the periphery of the box body, and the solar cell panel is connected with an anode plate 22-4 and a cathode plate 22-5 which are arranged in the box body through inner leads of a waterproof conduit. A water level sensor 22-6 is arranged on the inner side wall of the box body, and when the water level is lowered to a certain height, the power system 14 is triggered to feed water and supplement water. The inner wall of the other side is provided with a water quality sensor 22-7, and when the water quality pollution concentration is too high, the water supply pipe 16 is triggered to further regulate the water quality. An overflow unit 20 with a certain height is arranged on the outer side of the bottom layer of the box body, the overflow unit comprises an overflow surface and a water guide pipe 22-2 which is annularly distributed, and the water guide pipe is connected with a water outlet pipe 23 of the vertical flow artificial wetland.

The matrix filter material in the vertical flow constructed wetland unit box body is as follows: the bottom layer is made of 150-200mm quartz sand 22-13, the middle layer is made of 450-500mm biochar 22-11, and the upper layer is made of 100-150mm garden soil 22-9, so that the particle size range of the biochar of the waste wood used in the artificial wetland is 2-4mm in consideration of the problems of substrate filter material blockage and biochar performance. Biocarbon substrate hangs downThe wetland plant selected by the direct current artificial wetland is common wetland plant typha orientalis 22-8 in Guangdong region, and the planting density is 10-15 plants/m². Wherein the upper layer is provided with a water distribution pipe 22-10 connected with a water inlet pipe and a water supply pipe, and the lower layer is provided with a water collecting pipe 22-12 connected with a water outlet pipe 23. An aeration device 18 is also provided.

The horizontal subsurface flow constructed wetland unit 21 shown in fig. 5 and 6 comprises a cylindrical box body 22-1 made of carbon steel plates, a water level sensor 22-6 is arranged on the inner side wall of the box body, and when the water level is lowered to a certain height, the power system 14 is triggered to feed water and supplement water; when the water level is high to a certain height, the water level is kept stable by controlling the flow of the upper-level water outlet pipe. The inner wall of the other side is provided with a water quality sensor 22-7, and when the water quality pollution concentration is too high, the water supply pipe 16 is triggered to supply water to further adjust the water quality. The water distribution pipe of the artificial wetland is connected with the water outlet pipe and the water supply pipe of the vertical flow artificial wetland, and the water collection pipe and the water outlet pipe are connected with the overflow water guide pipe. An overflow unit 20 with a certain height is arranged on the outer side of the bottom layer of the box body, the overflow unit comprises an overflow surface and a water guide pipe 22-2 which is annularly distributed, and the water guide pipe is connected with a water outlet pipe 23 of the vertical flow artificial wetland. Wherein the substrate at the bottom is 100-150mm pond sludge 21-2, and the aquatic wetland plant water hyacinth 21-1 is planted at the upper layer. And an aeration device 18 is also arranged in the box body.

The ecological stabilization pond 19 shown in fig. 7 comprises a cylindrical box body 22-1 made of carbon steel plates, and water lily can be planted in the box body, and small fish can be cultured in the box body. A water level sensor 22-6 is arranged on the inner side wall of the box body, and when the water level is lowered to a certain height, the power system 14 is triggered to feed water and supplement water; when the water level is high to a certain height, the water level is kept stable by controlling the flow of the upper-level water outlet pipe. The inner wall of the other side is provided with a water quality sensor 22-7, and when the water quality pollution concentration is too high, the water supply pipe 16 is triggered to supply water to further adjust the water quality. The tank body is internally provided with a water distribution pipe and a water collection pipe, wherein the water distribution pipe is connected with a higher-level water outlet pipe and a water supply pipe, and the water collection pipe is connected with the water outlet pipe. The periphery of the box body is provided with a cleaning mechanical arm 19-1, so that sundries such as fallen leaves, dry branches and the like of plants can be cleaned in time. And an aeration device 18 is also arranged in the box body.

The system can adjust the treatment stage number according to the season water saving quantity, and sewage is conveyed to the highest artificial wetland unit, namely, the highest water distribution pipe is connected with the water inlet pipe 17 and the water supply pipe 16, the water collection pipe is connected with the water outlet pipe and the overflow water guide pipe, the next water distribution pipe is connected with the higher water outlet pipe, and the water collection pipe is connected with the water outlet pipe.

As shown in the water purification unit of fig. 8, the sewage flowing out of the water outlet pipe of the ecological stabilization pond is conveyed to the water purification unit 24 through the water inlet valve 24-1, the water body is purified again through the water treatment filter material layer, and finally conveyed to the ecological purified water storage and reuse chamber 25 through the water outlet valve 24-7. Wherein the water treatment filter material layer is set as follows: the first layer is preferably quartz sand 24-2, the second layer is preferably wood biochar 24-4, the third layer is a ceramic filter element 24-5, the fourth layer is preferably quartz sand 24-2, the fifth layer is preferably wood biochar 24-4, the sixth layer is a ceramic filter element 24-5, and the middle of each layer is separated by a non-woven cloth filling 24-3. And finally, a non-woven fabric liner superposed with the nano-silver loaded fiber layer 24-6 is arranged at the water outlet.

The ecological purified water storage and reuse unit 25 is internally provided with a water delivery pipe connected to the water supply pipe 16 for supplying water to the artificial wetland, and can be irrigated to ensure the normal growth of plants during seasonal degradation treatment. Meanwhile, the ecological purified water can be connected with a water delivery pipe through the water outlet 26 for other purposes.

Example 2

In the embodiment 1, the vertical flow artificial wetland is not additionally provided with the solar unit assembly, the whole artificial wetland system is operated at intervals (stopped operating at night), the operation time is 7:00-20:00, and the water pump controls the inflow of water to be 1.5 +/-0.1 m³The hydraulic retention time HRT is about 8 hours. And after the artificial wetland is constructed and domesticated for 50-60 days, the operation effect of the artificial wetland is sampled and analyzed. By taking each water inlet (outlet) as a sampling point, and comparing the physical and chemical indexes of water outlet in a unit in sunny and rainy days, the fact that (1) the addition of the biochar has no influence on the pH value can be found. The biochar matrix artificial wetland has a high effect of removing total nitrogen, and the removal rate of the total nitrogen of the primary biochar matrix vertical flow artificial wetland and the whole wetland system can reach 92.3 percent and 73.1 percent at most; influenced by the amination of organic nitrogen, the ammonia nitrogen removal effect is general, and the removal rates are respectively 12.0% and 51.0% at the highest. (2) Biochar baseThe biomass artificial wetland has higher removal effect on total phosphorus, and the removal rate of the total nitrogen of the primary biocarbon substrate vertical flow artificial wetland and the whole wetland system can reach 70.2 percent and 80.7 percent at most. COD_CrContent (wt.)>When the concentration is 10mg/L, the biochar substrate artificial wetland has good removal effect on the biochar substrate artificial wetland, and the removal rate can reach 94.9 percent at most. (3) Comparing the data under the working conditions of sunny days, heavy rain in sunny days and rainy days, the biochar substrate artificial wetland has better impact load resistance, and when the concentration of the influent pollutants is slightly higher, the biochar substrate artificial wetland has the effects of resisting total nitrogen, ammonia nitrogen, total phosphorus and COD (chemical oxygen demand)_CrThe purification treatment effect is more obvious.

In summary, 1, a sewage pretreatment unit is used for sewage interception pretreatment, a vertical flow artificial wetland unit, a horizontal subsurface flow artificial wetland unit and an ecological stabilization pond unit are used for water purification treatment, a water purification treatment unit is used for secondary purification treatment, and an ecological purified water storage and reuse unit is used for storing ecological purified water and is also used as a system water body supplement water source.

2. The constructed wetland system can be produced in a modularized mode, the disassembly and the replacement are simple, the blockage and other problems are avoided, meanwhile, the vertical flow constructed wetland, the horizontal subsurface flow constructed wetland and the ecological stabilization pond purify the water body unit, and the treatment stages can be reduced according to the seasonal water conservation quantity.

3. The artificial wetland system adds the biochar in the vertical flow artificial wetland seasoning, and is provided with the solar electrode plate to greatly improve the water purification capacity and effectively remove nitrogen, phosphorus and BOD_CrAnd reducing the eutrophication risk of the water body.

4. Water level sensors and water quality monitors are arranged on the artificial wetland and the ecological pond units so as to achieve all-weather automatic water feeding and replenishing.

5. The artificial wetland system has beautiful appearance and ornamental value when being used for water body treatment. The tower overflow brings water to life, and the self-purification capacity of the water is increased.

It is to be emphasized that: above is the preferred embodiment of the utility model, it is not right the utility model discloses do the restriction in any form, all be according to the utility model discloses a technical entity is to any simple modification, the equivalent change and the decoration that above embodiment was done, all still belong to the technical scheme's of the utility model within range.

Claims

1. A landscape type modularized biochar multistage artificial wetland automatic treatment system is characterized by comprising a sewage pretreatment unit, a vertical flow artificial wetland unit (22), a horizontal subsurface flow artificial wetland unit (21), an ecological stabilization pond unit (19), a water purification treatment unit (24) and an ecological purified water storage and reuse unit (25); the vertical flow constructed wetland unit (22), the horizontal subsurface flow constructed wetland unit (21) and the ecological stabilizing pond unit (19) are vertically arranged from top to bottom, and the purified water treatment unit (24) and the ecological purified water storage and reuse unit (25) are arranged left and right and are positioned below the ecological stabilizing pond unit (19).

2. The landscape type modular biochar multistage artificial wetland automatic treatment system according to claim 1, characterized in that the sewage pretreatment unit comprises a sewage interception tank (3), a grid plate (2), a sewage storage tank (5), an anaerobic treatment chamber (8), an oxygen consumption treatment chamber (12) and a regulation chamber (13); a grating plate (2) is arranged between the sewage interception tank (3) and the sewage storage tank (5), the anaerobic treatment chamber (8) is connected with the sewage storage tank (5), and the oxygen consumption treatment chamber (12) is positioned below the anaerobic treatment chamber (8); the regulating chamber (13) is connected with the oxygen consumption treatment chamber (12); a sewage inlet (1) is formed in the upper top surface of the sewage intercepting tank (3); a sewage draining outlet (4) is formed in the lower bottom surface of the sewage intercepting pool (3); an anaerobic treatment chamber water inlet (6) is arranged between the anaerobic treatment chamber (8) and the sewage storage pool (5); the anaerobic treatment chamber (8) and the oxygen consumption treatment chamber (12) are internally and transversely provided with partition plates (10).

3. The landscape type modular biochar multistage artificial wetland automatic treatment system according to claim 1, wherein the vertical flow artificial wetland unit (22) comprises a carbon steel plate box body (22-1), a solar cell panel (22-3), an anode plate (22-4), a cathode plate (22-5), a water level sensor (22-6), a water quality sensor (22-7), a water distribution pipe (22-10) and a water collection pipe (22-12); the solar cell panel (22-3) is arranged on the periphery of the carbon steel plate box body (22-1), and the solar cell panel (22-3) is connected with an anode plate (22-4) and a cathode plate (22-5) in the carbon steel plate box body (22-1); a water distribution pipe (22-10) is arranged at the upper layer position in the carbon steel plate tank body (22-1), and a water collection pipe (22-12) is arranged at the bottom layer position; the water level sensor (22-6) and the water quality sensor (22-7) are arranged on the inner side wall of the box body; the water distribution pipes (22-10) are arranged on the upper layer of the vertical flow artificial wetland unit (22), and the water collection pipes (22-12) are arranged on the bottom layer of the vertical flow artificial wetland unit (22); an aeration device (18) is arranged in the central position in the vertical flow artificial wetland unit (22); an overflow unit (20) is arranged on the periphery of the bottom layer of the carbon steel plate box body (22-1); the carbon steel plate box body (22-1) is filled with a matrix.

4. The landscape modular biochar multistage artificial wetland automated processing system according to claim 3, wherein the substrate is arranged into three layers: the bottom layer is quartz sand with the particle size of 150-; the wetland plant (22-8) is typha orientalis with the planting density of 10-15 plants/m²。

5. The landscape type modular biochar multistage artificial wetland automatic treatment system according to claim 3, wherein the overflow unit (20) consists of an overflow surface and water guide pipes (22-2), the overflow surface is an annular plane of the overflow unit arranged at the bottom layer of the box body, the water guide pipes (22-2) are uniformly distributed, and water is sent to the overflow surface through the water guide pipes to form an overflow landscape; the water guide pipes (22-2) distributed annularly are connected with a water outlet pipe (23) in the vertical flow artificial wetland, and the upper-level treated water body is delivered to the lower-level treatment unit through the water outlet pipe (23) and overflow water.

6. The landscape type modular biochar multistage artificial wetland automatic treatment system according to claim 1, characterized in that the horizontal subsurface flow artificial wetland unit (21) comprises a carbon steel plate box body (22-1) made of carbon steel plates, a water level sensor (22-6), a water quality sensor (22-7) and an overflow unit (20); the carbon steel plate box body (22-1) is filled with a substrate, and wetland plants are planted on the upper layer; the water level sensor (22-6) and the water quality sensor (22-7) are arranged on the inner side wall of the box body; the overflow unit is arranged on the outer side of the bottom layer of the box body; an annular overflow surface and a water guide pipe (22-2) which is annularly distributed are arranged in the overflow unit (20), and the water guide pipe is connected with an upper-level water outlet pipe (23);

the substrate is pond sludge (21-2) with the particle size of 100-150 mm; the wetland plants are water hyacinth (21-1); meanwhile, an aeration device (18) is also arranged in the box body.

7. The landscape-type modular biochar multistage artificial wetland automatic treatment system as claimed in claim 1, wherein the ecological stabilization pond unit (19) comprises a carbon steel plate box body (22-1) made of carbon steel plates, a water level sensor (22-6), a water quality sensor (22-7), a cleaning mechanical arm (19-1) and an aeration device (18); the water level sensor (22-6) and the water quality sensor (22-7) are arranged on the inner side wall of the box body; the cleaning mechanical arm is arranged at the upper part of the periphery of the box body; the aeration device (18) is arranged at the central position of the ecological stabilization pond unit (19).

8. The landscape type modular biochar multistage artificial wetland automatic treatment system according to claim 1, wherein the water purification treatment unit (24) comprises a water purification chamber water inlet (24-1), a water purification treatment filter material layer unit and a water purification storage tank connecting port (24-7); the water purification treatment filter material layer unit is sequentially provided with quartz sand, wood biochar (24-4), a ceramic filter element (24-5), quartz sand, biochar (24-4) and a sixth ceramic filter element (24-5) from top to bottom; the middle of each layer is separated by a non-woven fabric filling (24-3); finally, a non-woven fabric liner superposed with a nano-silver loaded fiber layer (24-6) is arranged at the water outlet; valves are arranged at the water inlet (24-1) of the water purifying chamber and the connecting port (24-7) of the water purifying storage tank; the purified water storage tank is connected with the opening; the water inlet (24-1) of the water purifying chamber is connected with the water outlet pipe (23) of the superior ecological stabilization pond; the purified water storage tank connecting port (24-7) is connected with the ecological purified water storage and reuse unit (25).

9. The landscape type modular biochar multistage artificial wetland automatic treatment system according to claim 1, wherein the ecological purified water storage and reuse unit (25) is internally provided with a water pipe connected to a supply pipe (16), and meanwhile, ecological purified water can be connected with the water pipe through a water outlet (26) for other purposes.

10. The landscape type modular biochar multistage artificial wetland automatic treatment system according to claim 2, which is characterized by further comprising a power system (14), a water inlet regulating valve (15), a supply pipe (16) and a water inlet pipe (17); the power system (14) is connected with the aeration device (18); the regulating chamber (13) is respectively connected with the vertical flow artificial wetland unit (22), the horizontal subsurface flow artificial wetland unit (21) and the ecological stabilization pond unit (19) through a water inlet pipe (17); the ecological purified water storage and reuse unit (25) is respectively connected with the vertical flow artificial wetland unit (22), the horizontal subsurface flow artificial wetland unit (21) and the ecological stabilization pond unit (19) through a supply pipe (16); a water inlet regulating valve (15) is arranged on the supply pipe (16) and the water inlet pipe (17); the power system (14) is a solar energy-electric energy combined power supply system; the aeration device (18) is a blast aeration device.