CN113371936B - Improved anti-blocking constructed wetland and use method thereof - Google Patents

Abstract

The invention discloses an improved anti-blocking constructed wetland, which comprises a water inlet part, a filtering part, a purifying part and a water outlet part, wherein the water inlet part is communicated with the filtering part and is used for collecting sewage to be treated and guiding the sewage to be treated into the filtering part after primary filtration, an anti-blocking device is arranged in the water inlet part and is used for stirring sediment and preventing the sediment from being accumulated, the filtering part is communicated with the purifying part and is used for filtering large-particle impurities in the sewage and guiding the filtered sewage into the purifying part, the purifying part is communicated with the water outlet part and is used for purifying the filtered sewage and then guiding the filtered sewage into the water outlet part, the purifying part comprises a microbial purification module and a biological purification module, the microbial purification module comprises an anaerobic bacteria module and an aerobic bacteria module, the anaerobic bacteria module is positioned below the aerobic bacteria module, and the water outlet part is used for discharging and utilizing the purified sewage. The invention has simple structure and strong operability, effectively improves the purification efficiency of the artificial wetland, effectively prevents the blockage problem of the artificial wetland and has popularization prospect.

Description

Improved anti-blocking constructed wetland and use method thereof

Technical Field

The invention relates to the technical field of artificial wetlands, in particular to an improved anti-blocking artificial wetland and a use method thereof.

Background

The artificial wetland is a novel ecological sewage treatment technology, is suitable for sewage treatment in vast middle and small towns and rural areas in China, and not only has good organic matter removal effect, but also has higher dephosphorization and denitrification functions. In addition, it also has the advantages of convenient operation and management, low construction cost, etc. However, in the existing engineering practice, short flow, bias flow and channeling of water flow in the artificial wetland are caused due to uneven distribution of inflow water flow, so that the available space of the artificial wetland is greatly reduced, and the load and the treatment effect of the artificial wetland are further influenced. Meanwhile, the blockage is the main problem faced by the artificial wetland, and a large amount of suspended matters in inlet water enter the artificial wetland due to poor separation, so that the blockage of the wetland, particularly the head of the wetland is easily caused, the hydraulic conductivity is greatly reduced, and the hydraulic load is reduced or the surface fluidization of the subsurface wetland is caused. Excessive blockage causes poor hydraulic circulation of the wetland, water level increase and short flow, treatment effect reduction, shortened operation life, and necessity of adopting repair measures.

The clogging process of the constructed wetland is essentially a process of decreasing the effective porosity. In the wetland water intake zone, the hydraulic conductivity is reduced and the retention time is shortened due to the accumulation of solid particles brought into the wetland.

At present, the existing methods for preventing and treating the blockage of the artificial wetland are more, such as a reasonable sewage dosing mode, intermittent water inflow is adopted to ensure the reoxygenation inside the artificial wetland, and the microbial activity is improved, but the method increases the management difficulty of the artificial wetland; the bamboo charcoal composite filler is used for preventing blockage, so that the cost is high, and the applicability is low; the wetland filler is replaced to improve the permeability of the constructed wetland, but the cost is higher and the operation is difficult; chemical agents are applied by a chemical method, and an inhibitor or a lytic agent is properly added to dissolve or remove the organic blockage, but the method is easy to reduce the wetland purification effect.

Disclosure of Invention

The invention aims to provide an improved anti-clogging constructed wetland and a use method thereof, which are used for solving the problems in the prior art.

In order to achieve the purpose, the invention provides the following scheme: the invention provides an improved anti-clogging constructed wetland, which comprises a water inlet part, a filtering part, a purifying part and a water outlet part, wherein the water inlet part is connected with the filtering part;

the water inlet part is communicated with the filtering part and is used for collecting sewage to be treated, preliminarily filtering the sewage to be treated and then guiding the sewage to be treated into the filtering part; an anti-blocking device is arranged in the water inlet part and is used for stirring sediments and preventing the sediments from being accumulated;

the filtering part is communicated with the purifying part and is used for filtering large-particle impurities in the sewage and guiding the filtered sewage into the purifying part;

the purification part is communicated with the water outlet part and is used for purifying the filtered sewage and then guiding the sewage into the water outlet part; the purification part comprises a microbial purification module and a biological purification module; the microorganism purification module comprises an anaerobic bacteria module and an aerobic bacteria module, and the anaerobic bacteria module is positioned below the aerobic bacteria module;

the water outlet part is used for discharging and utilizing the purified sewage.

Preferably, the water inlet part comprises a first water inlet tank, a second water inlet tank and a connecting pipe;

two ends of the connecting pipe are respectively communicated with the first water inlet tank and the second water inlet tank;

a filter screen for filtering large impurities in the sewage is arranged at the inlet of the first water inlet tank; a first discharge pipe is communicated between the bottom end of the first water inlet tank and the filtering part;

a primary filtering layer for primarily filtering sewage is arranged in the second water inlet tank, and the second water inlet tank is communicated with the filtering part; a second discharge pipe is communicated between the bottom end of the second water inlet tank and the filtering part;

the anti-blocking device comprises a driving rotating wheel, a driven rotating wheel and a stirring device, the driving rotating wheel and the driven rotating wheel are respectively in rotating connection with the connecting pipe, and the driving rotating wheel is hinged with the driven rotating wheel; the driven rotating wheel is in transmission connection with the stirring device.

Preferably, the driving rotating wheel comprises a first fixed shaft, two ends of the first fixed shaft are respectively fixed on the pipe wall of the connecting pipe, a first rotating shaft is rotatably connected outside the first fixed shaft, and a plurality of blades are fixed on the outer circumference of the first rotating shaft at equal intervals;

the driven rotating wheel comprises a second fixed shaft, two ends of the second fixed shaft are respectively fixed on the pipe wall of the connecting pipe, a second rotating shaft is rotatably connected outside the second fixed shaft, an outer ring is sleeved outside the second rotating shaft, and a plurality of spokes are fixed on the outer circumference of the second rotating shaft at equal intervals and connected with the outer ring;

a first transmission rod is hinged between any blade and any spoke;

and a first bevel gear is fixed at one end of the second rotating shaft and is in transmission connection with the stirring device.

Preferably, the stirring device comprises a second transmission rod, a second bevel gear and a third bevel gear are respectively fixed at two ends of the second transmission rod, and the first bevel gear is in meshed connection with the second bevel gear;

the third bevel gear is connected with a fourth bevel gear in a meshed mode, one end, facing the bottom of the second water inlet tank, of the fourth bevel gear is fixedly provided with one end of a third transmission rod, and a plurality of stirring blades are circumferentially and equidistantly fixed at the other end of the third transmission rod.

Preferably, the filter house includes by the first filter layer that sets up from the top down, second filter layer and third filter layer, the bottom mounting of third filter layer has first isolation orifice plate, the water storage chamber has been seted up to the lower extreme of first isolation orifice plate, the water storage chamber has the water inlet of water pump through the inlet tube intercommunication, the delivery port of water pump passes through the outlet pipe intercommunication the microbial purification module, set up liquid level controller in the water storage chamber, liquid level controller electric connection the water pump.

Preferably, the anaerobic bacteria module comprises a first guide plate and a second guide plate, the first guide plate and the second guide plate are arranged at intervals, the adjacent first guide plate and the second guide plate form a water flow channel, a guide block is arranged between the adjacent first guide plates, and another guide block is arranged between the adjacent second guide plates;

a plurality of strain plates are arranged in the water flow channel in an array mode, and anaerobic bacteria are inoculated on the strain plates;

the top end of the water flow channel is communicated with an exhaust pipe, and the exhaust pipe extends out of the purification part.

Preferably, the aerobic bacteria module comprises a second isolation pore plate, the anaerobic bacteria module is arranged below the second isolation pore plate, an aerobic bacteria layer is arranged above the second isolation pore plate, aerobic bacteria are inoculated in the aerobic bacteria layer, the biological purification module is arranged above the aerobic bacteria layer, and an aeration pipe penetrates through the aerobic bacteria layer.

Preferably, the biological purification module comprises a substrate layer and aquatic plants, wherein the aquatic plants are planted on the substrate layer, and the substrate layer is positioned above the aerobic bacteria layer; the matrix layer comprises a first matrix layer, a second matrix layer and a third matrix layer which are sequentially arranged from bottom to top, the first matrix layer is positioned above the aerobic bacteria layer, and the aquatic plants are rooted in the second matrix layer and the third matrix layer.

Preferably, the water outlet part comprises a water outlet pipe, the water outlet pipe is positioned on one side of the purification part, which is far away from the water inlet part, and the setting height of the water outlet pipe is not lower than the top surface of the third matrix layer; and a water utilization module is arranged behind the water outlet pipe.

The invention also provides an improved anti-clogging constructed wetland using method, which comprises the following using steps,

injecting sewage to be treated, and performing primary filtration;

further filtering the preliminarily filtered sewage;

purifying the further filtered sewage;

and discharging the purified sewage.

The invention discloses the following technical effects: the improved anti-blocking constructed wetland disclosed by the invention is provided with the water inlet part and the filtering part to filter sewage entering the constructed wetland for multiple times, the water inlet part filters large-area insoluble impurities such as fallen leaves and plastic bags in the sewage, other small-particle impurities such as fine soil are not filtered, and the filtering part further filters the insoluble impurities in the sewage through multi-layer filtering, so that the sewage entering the purifying part is ensured not to have large-particle impurities, the purifying part is prevented from being blocked, and the purifying part is prevented from purifying the sewage; the water inlet part is provided with an anti-blocking device, and sewage flowing into the water inlet part is stirred under the driving of the sewage flowing through the water inlet part, so that the blockage of the water inlet part caused by the accumulation of impurities in the water inlet part is reduced; the purification part is a microorganism purification part and a biological purification part, the microorganism purification module is divided into an anaerobic bacteria module and an aerobic bacteria module, the sewage is subjected to anaerobic bacteria purification and aerobic bacteria purification, organic matters in the sewage are decomposed and converted into substances such as inorganic matters required by plant growth, and the substances are purified and absorbed by the biological purification module, so that the aim of purifying the sewage is fulfilled, the purification efficiency is high, and the purified sewage is harmless; the purified sewage is discharged out of the artificial wetland by the water outlet part. The invention has simple structure and strong operability, effectively improves the purification efficiency of the artificial wetland, effectively prevents the blockage problem of the artificial wetland and has popularization prospect.

Drawings

In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the drawings required in the embodiments will be briefly described below, and it is obvious that the drawings in the following description are only some embodiments of the present invention, and it is obvious for those skilled in the art that other drawings can be obtained according to these drawings without creative efforts.

Fig. 1 is a front view of an improved anti-clogging constructed wetland;

FIG. 2 is a schematic structural diagram of an improved anti-clogging constructed wetland of the invention;

FIG. 3 is an enlarged view of a portion of FIG. 2;

FIG. 4 is a three-dimensional view of the driven rotor;

FIG. 5 is a three-dimensional view of the stirring device;

FIG. 6 is a partial enlarged view of B in FIG. 2;

wherein, 1-water inlet part, 2-filtering part, 3-purifying part, 4-water outlet part, 5-first water inlet tank, 6-second water inlet tank, 7-connecting pipe, 8-filtering net, 9-first discharging pipe, 10-preliminary filtering layer, 11-second discharging pipe, 12-driving rotating wheel, 13-driven rotating wheel, 14-first fixed shaft, 15-first rotating shaft, 16-blade, 17-second fixed shaft, 18-second rotating shaft, 19-outer ring, 20-spoke, 21-first driving rod, 22-first bevel gear, 23-second driving rod, 24-second bevel gear, 25-third bevel gear, 26-fourth bevel gear, 27-third driving rod, 28-stirring blade, 29-first filtering layer, 30-second filtering layer, 31-third filtering layer, 32-first isolating pore plate, 33-water pump, 34-first guiding plate, 35-second guiding plate, 36-water flow channel, 37-guiding block, 38-bacterial seed plate, 39-second oxygen exhausting pipe, 39-second isolating pore plate, 44-water discharging pipe, 46-third guiding plate, 37-third guiding plate, 40-second guiding plate, 40-third guiding plate, 40-water discharging pipe, and 46-third water discharging pipe, 46-utilizing water-third guiding plate module.

Detailed Description

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

In order to make the aforementioned objects, features and advantages of the present invention comprehensible, embodiments accompanied with figures are described in further detail below.

Referring to fig. 1-6, the invention provides an improved anti-clogging constructed wetland, which comprises a water inlet part 1, a filtering part 2, a purifying part 3 and a water outlet part 4;

the water inlet part 1 is communicated with the filtering part 2 and is used for collecting the sewage to be treated, preliminarily filtering the sewage to be treated and then guiding the sewage to be treated into the filtering part 2; an anti-blocking device is arranged in the water inlet part 1 and is used for stirring the sediment and preventing the sediment from being accumulated; the blocking device takes the sewage entering the water inlet part 1 as power to stir the sewage, so that granular impurities in the sewage are prevented from being accumulated in the water inlet part, and the probability of blocking the water inlet part is reduced;

the filtering part 2 is communicated with the purifying part 3 and is used for filtering large-particle impurities in the sewage and guiding the filtered sewage into the purifying part 3; the filtering process of the filtering part 2 comprises multi-layer filtering, and impurities in the sewage are filtered layer by layer, so that insoluble large-particle impurities in the sewage are reduced;

the purification part 3 is communicated with the water outlet part 4 and is used for purifying the filtered sewage and then leading the sewage into the water outlet part 4; the purification part 3 comprises a microorganism purification module and a biological purification module; the microorganism purification module comprises an anaerobic bacteria module and an aerobic bacteria module, and the anaerobic bacteria module is positioned below the aerobic bacteria module;

the water outlet part 4 is used for discharging and utilizing the purified sewage.

In a further optimized scheme, the water inlet part 1 comprises a first water inlet tank 5, a second water inlet tank 6 and a connecting pipe 7; the first water inlet tank 5 and the second water inlet tank 6 are both designed as box bodies, a water distribution plate is fixed on the top surface of each box body downwards, a certain space is reserved between the water distribution plate and the bottom surface of each box body, one space in each box body is divided into two, sewage entering each box body is blocked by the water distribution plate, the impact force of the sewage is reduced, the flow velocity is reduced, and the impact force of water flow on subsequent equipment is effectively reduced;

two ends of the connecting pipe 7 are respectively communicated with the first water inlet tank 5 and the second water inlet tank 6; the connecting position of the connecting pipe 7 and the first water inlet tank 5 and the second water inlet tank 6 is positioned at the position, close to the top end, of the side wall of the first water inlet tank 5 and the side wall of the second water inlet tank 6, and impurities in the sewage are deposited at the bottom of the tank body when entering the tank body, so that the content of the impurities entering the next step along with the water flow is reduced;

a filter screen 8 for filtering large impurities in the sewage is arranged at the inlet of the first water inlet tank 5; a first discharge pipe 9 is communicated between the bottom end of the first water inlet tank 5 and the filtering part 2; the filter screen 8 is a basket type filter screen, impurities which easily block pipelines such as fallen leaves, grass roots and plastic bags in the sewage can be filtered preliminarily, the basket type filter screen is convenient to lift and clean, the diameter of the first discharge pipe 9 is smaller than that of the connecting pipe 7, the first discharge pipe inclines towards the filtering part 2, the inlet of the first discharge pipe 9 is provided with a filter material, accumulated water in the first water inlet tank 5 can be guided into the filtering part, and the sewage is prevented from accumulating and smelling in the first water inlet tank 5;

a preliminary filtering layer 10 for preliminarily filtering sewage is arranged in the second water inlet tank 6, and the second water inlet tank 6 is communicated with the filtering part 2; a second discharge pipe 11 is communicated between the bottom end of the second water inlet tank 6 and the filtering part 2; the pore size of the preliminary filtering layer 10 is large, so that sewage is preliminarily filtered, the quantity of impurities entering the filtering part 2 is reduced, the diameter of the second discharge pipe 11 is smaller than that of the connecting pipe 7 and inclines towards the filtering part 2, and the inlet of the second discharge pipe 11 is provided with filtering materials, so that accumulated water in the second water inlet tank 6 can be guided into the filtering part, and the sewage is prevented from accumulating and smelling in the second water inlet tank 6;

the anti-blocking device comprises a driving rotating wheel 12, a driven rotating wheel 13 and a stirring device, wherein the driving rotating wheel 12 and the driven rotating wheel 13 are respectively in rotating connection with the connecting pipe 7, and the driving rotating wheel 12 is hinged with the driven rotating wheel 13; the driven rotating wheel 13 is in transmission connection with the stirring device; when sewage passes through the connecting pipe 7, the driving rotating wheel 12 is driven to rotate, the driving rotating wheel 12 drives the driven rotating wheel 13 hinged with the driving rotating wheel, and the driven rotating wheel 13 drives the stirring device arranged at the bottom of the second water inlet tank 6 to rotate, so that deposited impurities are stirred, and the impurities are prevented from being deposited to cause blockage; the rotation of the driving pulley 12 and the driven pulley 13 also agitates the deposited impurities in the connection pipe 7, preventing the connection pipe 7 from being clogged.

According to a further optimized scheme, the driving rotating wheel 12 comprises a first fixed shaft 14, two ends of the first fixed shaft 14 are respectively fixed on the pipe wall of the connecting pipe 7, a first rotating shaft 15 is rotatably connected outside the first fixed shaft 14, and a plurality of blades 16 are fixed on the outer circumference of the first rotating shaft 15 at equal intervals; the two ends of the first fixed shaft 14 are fixed on the pipe wall of the connecting pipe 7 to play a role of fixing, the periphery of the first rotating shaft 15 is fixed with a plurality of blades 16, the edges of the blades 16 are tangent with the inner wall of the connecting pipe 7, when sewage passes through the connecting pipe 7, the sewage impacts the blades 16, and the blades 16 rotate around the first fixed shaft 14;

the driven rotating wheel 13 comprises a second fixed shaft 17, two ends of the second fixed shaft 17 are respectively fixed on the pipe wall of the connecting pipe 7, a second rotating shaft 18 is rotatably connected outside the second fixed shaft 17, an outer ring 19 is sleeved outside the second rotating shaft 18, and a plurality of spokes 20 are fixed on the outer circumference of the second rotating shaft 18 at equal intervals and connected with the outer ring 19;

a first transmission rod 21 is hinged between any blade 16 and any spoke 20; a first bevel gear 22 is fixed at one end of the second rotating shaft 18, and the first bevel gear 22 is in transmission connection with a stirring device; when the blades 16 rotate around the first fixed shaft 14, the blades 16 drive the spokes 20 hinged thereto to rotate around the second fixed shaft 17 through the first transmission rod 21; when the spokes 20 rotate, the second rotating shaft 18 rotates and drives the first bevel gear 22 to rotate, and the outer ring 19 is used for reinforcing the spokes 20 and preventing the spokes 20 from vibrating.

In a further optimized scheme, the stirring device comprises a second transmission rod 23, a second bevel gear 24 and a third bevel gear 25 are respectively fixed at two ends of the second transmission rod 23, and the first bevel gear 22 is in meshed connection with the second bevel gear 24;

the third bevel gear 25 is connected with a fourth bevel gear 26 in a meshing manner, one end of the third transmission rod 27 is fixed at one end of the fourth bevel gear 26, which faces the bottom of the second water inlet tank 6, and a plurality of stirring blades 28 are fixed at equal intervals in the circumferential direction at the other end of the third transmission rod 27; the rotation of the first bevel gear 22 is transmitted and changed by the second transmission rod 23, the second bevel gear 24, the third bevel gear 25 and the third transmission rod 27 to drive the stirring blade 28 to rotate along with the third transmission rod 27, so as to stir the impurities at the bottom of the second water inlet tank 6 and prevent deposition, and the blade of the stirring blade 28 is designed asymmetrically, so that the stirring force and the stirring area are increased.

According to a further optimized scheme, the filtering part 2 comprises a first filtering layer 29, a second filtering layer 30 and a third filtering layer 31 which are arranged from top to bottom, a first isolation pore plate 32 is fixed at the bottom end of the third filtering layer 31, a water storage cavity is formed in the lower end of the first isolation pore plate 32 and is communicated with a water inlet of a water pump 33 through a water inlet pipe, a water outlet of the water pump 33 is communicated with the microbial purification module through a water outlet pipe 47, a liquid level controller is arranged in the water storage cavity, and the liquid level controller is electrically connected with the water pump 33; the sewage enters the water storage cavity after being filtered layer by layer through the first filter layer 29, the second filter layer 30 and the third filter layer 31, when the water level in the water storage cavity rises, the liquid level controller controls the water pump 33 to start to pump the sewage in the water storage cavity into the purification part 3, and when the water level in the water storage cavity falls, the water pump 33 stops, the process is controlled fully automatically, and sufficient power is provided for sewage flow.

In a further optimized scheme, the anaerobic bacteria module comprises a first guide plate 34 and a second guide plate 35, the first guide plate 34 and the second guide plate 35 are arranged at intervals, the adjacent first guide plate 34 and the second guide plate 35 form a water flow channel 36, a guide block 37 is arranged between the adjacent first guide plates 34, and another guide block 37 is arranged between the adjacent second guide plates 35; a plurality of strain plates 38 are arranged in the water flow channel 36 in an array manner, and anaerobic bacteria are inoculated on the strain plates 38; the top end of the water flow channel 36 is communicated with an exhaust pipe 39, and the exhaust pipe 39 extends out of the purification part 3; the water flow channels 36 face each other layer by layer, so that the contact time of the sewage and the strain plates 38 is prolonged, the reaction time of anaerobic bacteria is prolonged, organic matters in the sewage are effectively purified, the purification effect is good, the exhaust pipe 39 is used for discharging products such as hydrogen sulfide, methane and carbon dioxide generated in the anaerobic reaction process of the anaerobic bacteria out of the purification module, and then the products are collected, separated and utilized, and the separation and utilization of the products are the prior art and are not described again; the one end that is close to the anaerobe module of blast pipe 39 is equipped with water proof ventilated membrane for prevent that sewage from getting into blast pipe 39, can not hinder gaseous entering simultaneously, the other end of blast pipe 39 is equipped with the check valve, and gas can only circulate outside blast pipe 39, and different reverse circulation prevents that external air from getting into the anaerobe module, and oxygen in the air can influence the purification speed of anaerobe, leads to the anaerobe to die even.

According to a further optimized scheme, the aerobic bacteria module comprises a second isolation pore plate 40, an anaerobic bacteria module is arranged below the second isolation pore plate 40, an aerobic bacteria layer 41 is arranged above the second isolation pore plate 40, aerobic bacteria are inoculated in the aerobic bacteria layer 41, the biological purification module is positioned above the aerobic bacteria layer 41, and an aeration pipe 42 penetrates through the aerobic bacteria layer 41; the sewage after the anaerobe purifies enters into aerobic layer 41 after passing through second isolation orifice plate 40, and the aerobic in aerobic layer 41 further purifies sewage, and aeration pipe 42 is used for letting in the air in to aerobic layer 41, provides sufficient oxygen for the purification of aerobic, improves purification rate.

In a further optimization scheme, the biological purification module comprises a substrate layer and aquatic plants 43, wherein the aquatic plants 43 are planted on the substrate layer, and the substrate layer is positioned above the aerobic bacteria layer 41; the substrate layers comprise a first substrate layer 44, a second substrate layer 45 and a third substrate layer 46 which are sequentially arranged from bottom to top, the first substrate layer 44 is positioned above the aerobic bacteria layer 41, and the aquatic plants 43 are rooted in the second substrate layer 45 and the third substrate layer 46; after being purified by the anaerobic bacteria module and the aerobic bacteria module, the inorganic matter content in the sewage is increased, the sewage is enriched in the first substrate layer 44, the second substrate layer 45 and the third substrate layer 46 after being absorbed by the first substrate layer 44, the second substrate layer 45 and the third substrate layer 46, the roots of the aquatic plants 43 deeply enter the first substrate layer 44, the second substrate layer 45 and the third substrate layer 46 to absorb the inorganic matter therein for self growth and photosynthesis, the content of pollutants in the sewage purified by the first substrate layer 44, the second substrate layer 45 and the third substrate layer 46 is reduced, the sewage reaches the discharge standard, and then the sewage enters the water outlet part 4.

In a further optimized scheme, the water outlet part 4 comprises a water outlet pipe 47, the water outlet pipe 47 is positioned on one side of the purification part 3 far away from the water inlet part 1, and the setting height of the water outlet pipe 47 is not lower than the top surface of the third matrix layer 46; a water utilization module 48 is arranged behind the water outlet pipe 47, and the sewage discharged by the water outlet pipe 47 is recycled.

In another embodiment, the water utilization module 48 is a hydro-generator set that uses waste water for power generation, operates on the water supply pump 33 and the level controller, and uses the generated water as recycled water for cleaning.

An improved anti-clogging constructed wetland using method comprises the following using steps,

injecting sewage to be treated, and performing primary filtration; the water inlet part 1 is used for primarily filtering the sewage and then guiding the sewage into the filtering part 2;

further filtering the preliminarily filtered sewage; the filtering part 2 further filters the sewage, and the filtered sewage is pumped into the purifying part 3;

purifying the further filtered sewage; the microorganism purification module and the biological purification module of the purification part 3 sequentially treat the sewage;

discharging the purified sewage; the effluent unit 4 discharges the purified sewage for recycling.

The using method comprises the following steps: sewage to be purified is discharged into a filter screen 8 in a first water inlet tank 5, the sewage is subjected to preliminary filtration to filter impurities which are difficult to decompose, such as large-volume fallen leaves and products, and the like, the remaining sewage enters a second water inlet tank 6 through a connecting pipe 7, a preliminary filter layer 10 in the second water inlet tank 6 filters the sewage again to adsorb the impurities in the sewage, and when the amount of the entering water and the impurities is less, the impurities adsorbed by the preliminary filter layer 10 flow into a filter part 2 along with the water; when sewage passes through the connecting pipe 7, the blades 16 are pushed to enable the blades 16 to rotate around the first fixing shaft 14, meanwhile, the spokes 20 are driven by the first transmission shaft 15, the second rotating shaft 18 rotates around the second fixing shaft 17, the second rotating shaft 18 drives the first bevel gear 22 to rotate, the rotating motion form of the first bevel gear 22 passes through the second transmission rod 23, the second bevel gear 24, the third bevel gear 25 and the third transmission rod 27, the stirring blades 28 are driven to rotate along with the third transmission rod 27 after transmission and replacement, the stirring blades 28 stir the sewage, impurities are prevented from precipitating at the bottom of the second water inlet box 6, meanwhile, the sewage and the impurities are stirred more uniformly, and the primary filter layer 10 is favorable for adsorbing the impurities.

The sewage entering the filtering part 2 passes through the first filtering layer 29, the second filtering layer 30 and the third filtering layer 31 from top to bottom and then enters the water storage cavity after being filtered layer by layer, when the water level in the water storage cavity rises, the water pump 33 is controlled by the liquid level controller to be started, the sewage in the water storage cavity is pumped into the purifying part 3, and when the water level in the water storage cavity falls, the water pump 33 stops, the process is controlled fully automatically, and sufficient power is provided for sewage flowing.

After being pumped into the purification part 3, the sewage rises step by step along the water flow channel 36, in the process, the sewage passes through the strain plate 38 and reacts with anaerobic bacteria inoculated in the strain plate 38, the anaerobic bacteria decompose organic matters in the sewage to generate substances such as carbon dioxide, water, methane, hydrogen sulfide and the like, wherein the gas part is discharged along the exhaust pipe 39 and then is separated and recycled; the sewage after anaerobic purification enters the aerobic bacteria layer 41 after passing through the second isolation pore plate 40, reacts with aerobic bacteria inoculated in the aerobic bacteria layer 41, further decomposes the substances enriched therein, and converts the substances into substances which can be absorbed and utilized by the aquatic plants 43, and the substances gradually pass through the first matrix layer 44, the second matrix layer 45 and the third matrix layer 46 along with the water flow, are enriched therein, and then are gradually absorbed by the aquatic plants 43 for growth and photosynthesis.

The sewage after being purified by the microorganisms and the aquatic plants basically reaches the discharge use standard, then is discharged through the water outlet pipe 47 and enters the water utilization module 48 for recycling, and the water utilization module 48 can select equipment such as hydraulic power generation or reclaimed water flushing, and has various purposes.

The invention has simple structure and strong operability, effectively improves the purification efficiency of the artificial wetland, effectively prevents the blockage problem of the artificial wetland and has popularization prospect.

In the description of the present invention, it is to be understood that the terms "longitudinal", "lateral", "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", and the like, indicate orientations or positional relationships based on those shown in the drawings, are merely for convenience of description of the present invention, and do not indicate or imply that the referenced devices or elements must have a particular orientation, be constructed and operated in a particular orientation, and thus, are not to be construed as limiting the present invention.

The above-described embodiments are merely illustrative of the preferred embodiments of the present invention, and do not limit the scope of the present invention, and various modifications and improvements of the technical solutions of the present invention can be made by those skilled in the art without departing from the spirit of the present invention, and the technical solutions of the present invention are within the scope of the present invention defined by the claims.

Claims (4)

1. The utility model provides an improved generation prevents blockking up constructed wetland which characterized in that: comprises a water inlet part (1), a filtering part (2), a purifying part (3) and a water outlet part (4);

the water inlet part (1) is communicated with the filtering part (2) and is used for collecting sewage to be treated, preliminarily filtering the sewage to be treated and guiding the sewage to be treated into the filtering part (2); the water inlet part (1) is internally provided with an anti-blocking device for stirring sediment to prevent the sediment from being accumulated;

the filtering part (2) is communicated with the purifying part (3) and is used for filtering large-particle impurities in the sewage and guiding the filtered sewage into the purifying part (3);

the purification part (3) is communicated with the water outlet part (4) and is used for purifying the filtered sewage and then guiding the sewage into the water outlet part (4); the purification part (3) comprises a microbial purification module and a biological purification module, the microbial purification module comprises an anaerobic bacteria module and an aerobic bacteria module, and the anaerobic bacteria module is positioned below the aerobic bacteria module;

the water outlet part (4) is used for discharging and utilizing the purified sewage;

the water inlet part (1) comprises a first water inlet tank (5), a second water inlet tank (6) and a connecting pipe (7);

two ends of the connecting pipe (7) are respectively communicated with the first water inlet tank (5) and the second water inlet tank (6);

a filter screen (8) for filtering large impurities in the sewage is arranged at the inlet of the first water inlet tank (5); a first discharge pipe (9) is communicated between the bottom end of the first water inlet tank (5) and the filtering part (2);

a preliminary filtering layer (10) for preliminarily filtering sewage is arranged in the second water inlet tank (6), and the second water inlet tank (6) is communicated with the filtering part (2); a second discharge pipe (11) is communicated between the bottom end of the second water inlet tank (6) and the filtering part (2);

the anti-blocking device comprises a driving rotating wheel (12), a driven rotating wheel (13) and a stirring device, the driving rotating wheel (12) and the driven rotating wheel (13) are respectively in rotating connection with the connecting pipe (7), and the driving rotating wheel (12) is hinged with the driven rotating wheel (13); the driven rotating wheel (13) is in transmission connection with the stirring device;

the driving rotating wheel (12) comprises a first fixed shaft (14), two ends of the first fixed shaft (14) are respectively fixed on the pipe wall of the connecting pipe (7), a first rotating shaft (15) is rotatably connected outside the first fixed shaft (14), and a plurality of blades (16) are fixed on the outer circumference of the first rotating shaft (15) at equal intervals;

the driven rotating wheel (13) comprises a second fixed shaft (17), two ends of the second fixed shaft (17) are respectively fixed on the pipe wall of the connecting pipe (7), a second rotating shaft (18) is rotatably connected outside the second fixed shaft (17), an outer ring (19) is sleeved outside the second rotating shaft (18), and a plurality of spokes (20) are fixed on the outer circumference of the second rotating shaft (18) at equal intervals and connected with the outer ring (19);

a first transmission rod (21) is hinged between any blade (16) and any spoke (20);

a first bevel gear (22) is fixed at one end of the second rotating shaft (18), and the first bevel gear (22) is in transmission connection with the stirring device;

the stirring device comprises a second transmission rod (23), a second bevel gear (24) and a third bevel gear (25) are respectively fixed at two ends of the second transmission rod (23), and the first bevel gear (22) is meshed with the second bevel gear (24);

a fourth bevel gear (26) is connected to the third bevel gear (25) in a meshed manner, one end, facing the bottom of the second water inlet tank (6), of the fourth bevel gear (26) is fixed with one end of a third transmission rod (27), and a plurality of stirring blades (28) are fixed to the other end of the third transmission rod (27) at equal intervals in the circumferential direction;

the anaerobic bacteria module comprises a first guide plate (34) and a second guide plate (35), the first guide plate (34) and the second guide plate (35) are arranged at intervals, the adjacent first guide plate (34) and the second guide plate (35) form a water flow channel (36), a guide block (37) is arranged between the adjacent first guide plates (34), and another guide block (37) is arranged between the adjacent second guide plates (35);

the water flow channel (36) is arranged in an S shape, a plurality of bacterial seed plates (38) are arranged in the water flow channel (36) in a folding and inclined array mode, and anaerobic bacteria are inoculated on the bacterial seed plates (38);

the top end of the water flow channel (36) is communicated with an exhaust pipe (39), and the exhaust pipe (39) extends out of the purification part (3);

the aerobic bacteria module comprises a second isolation pore plate (40), the anaerobic bacteria module is arranged below the second isolation pore plate (40), an aerobic bacteria layer (41) is arranged above the second isolation pore plate (40), aerobic bacteria are inoculated in the aerobic bacteria layer (41), the biological purification module is positioned above the aerobic bacteria layer (41), and an aeration pipe (42) penetrates through the aerobic bacteria layer (41);

the biological purification module comprises a substrate layer and aquatic plants (43), wherein the aquatic plants (43) are planted on the substrate layer, and the substrate layer is positioned above the aerobic bacteria layer (41); the matrix layer comprises a first matrix layer (44), a second matrix layer (45) and a third matrix layer (46) which are sequentially arranged from bottom to top, the first matrix layer (44) is positioned above the aerobic bacteria layer (41), and the aquatic plants (43) are rooted in the second matrix layer (45) and the third matrix layer (46).

2. The improved anti-clogging constructed wetland according to claim 1, characterized in that: filter portion (2) include by last first filter layer (29) that sets up under to, second filter layer (30) and third filter layer (31), the bottom mounting of third filter layer (31) has first isolation orifice plate (32), the water storage chamber has been seted up to the lower extreme of first isolation orifice plate (32), the water storage chamber has the water inlet of water pump (33) through the inlet tube intercommunication, the delivery port of water pump (33) passes through outlet pipe (47) intercommunication the microbial purification module, the intracavity setting of water storage controller, liquid controller electric connection water pump (33).

3. The improved anti-clogging constructed wetland according to claim 1, characterized in that: the water outlet part (4) comprises a water outlet pipe (47), the water outlet pipe (47) is positioned on one side of the purification part (3) far away from the water inlet part (1), and the setting height of the water outlet pipe (47) is not lower than the top surface of the third matrix layer (46); and a water utilization module (48) is arranged behind the water outlet pipe (47).

4. An improved anti-clogging constructed wetland use method, according to any one of claims 1 to 3, characterized in that: comprises the following steps of use,

injecting sewage to be treated, and performing primary filtration;

further filtering the primarily filtered sewage;

purifying the further filtered sewage;

and discharging the purified sewage.

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