CN114380457A

CN114380457A - Synthesize wetland water purification system

Info

Publication number: CN114380457A
Application number: CN202111472129.9A
Authority: CN
Inventors: 李茂华; 李威; 顾树彬
Original assignee: Tianjin Yiye Construction Engineering Co ltd
Current assignee: Tianjin Yiye Construction Engineering Co ltd
Priority date: 2021-12-06
Filing date: 2021-12-06
Publication date: 2022-04-22

Abstract

The invention discloses a comprehensive wetland water purification system, which comprises: the system comprises a chlorine removal system, wherein the inlet end of the chlorine removal system is communicated with a sewage treatment system, the outlet end of the chlorine removal system is communicated with a purified water storage tank, the purified water storage tank is communicated with the inlet end of an undercurrent plant purification tank, the outlet end of the undercurrent plant purification tank is communicated with the inlet end of an undercurrent plant storage tank, the bottoms of all sections in the undercurrent plant purification zone are mutually communicated, the undercurrent plant storage tank is provided with an undercurrent water outlet which is communicated with the inlet end of a surface current plant purification tank, the outlet end of the surface current plant purification tank is communicated with the inlet end of the surface current storage tank, the surface current storage tank is communicated with an artificial lake through a surface current water outlet pipe, the chlorine removal system, the purified water storage tank, the undercurrent plant purification tank, the undercurrent plant storage tank, the surface current plant purification tank, the surface current filtration tank and the artificial lake are sequentially reduced in water level height, so that water flows naturally through the gravity action, and the problems that the investment and operation cost of tail water treated by a sewage plant in the prior art are high are solved, Secondary pollution and non-ideal purification.

Description

Synthesize wetland water purification system

Technical Field

The invention belongs to the technical field of water purification, and particularly relates to a comprehensive wetland water purification system.

Background

With the increasing progress of urbanization in China, a large number of rural population is poured into cities, the environmental pressure brought by population problems is increased continuously, and the problem of shortage of fresh water resources is increasingly highlighted. At present, most of tail water of sewage treatment plants in China is discharged to naturally-received water bodies such as rivers, lakes and reservoirs through surface runoff or special water return channels. Although the effluent standard of the sewage plant reaches the first-level A or first-level B discharge index specified in GB18919-2002 discharge Standard of pollutants for municipal Sewage treatment plants, a certain distance is left from the surface V water body standard specified in GB-3838-2002 quality Standard of surface Water Environment, and the direct discharge of the tail water of the sewage plant seriously influences the safety of freshwater resources in China. Because of the shortage of surface fresh water resources and frequent occurrence of black and odorous water bodies on sites, the protection of water resources becomes one of the problems to be solved urgently at the present stage.

At present, in order to reduce the pollution of tail water treated by a sewage plant to surface water, the tail water is usually intercepted by physical, chemical and biological methods such as activated carbon adsorption, magnetic coagulation sedimentation, biomembrane and the like before being discharged into the surface water. After a series of treatments, the wastewater is discharged after reaching the standard, so that the possibility of generating black and odorous water is greatly reduced. However, the use of these measures has the problems of high investment and operation cost, secondary pollution, undesirable purification and the like.

Disclosure of Invention

The invention aims to provide a comprehensive wetland purified water system, which solves the technical problems of high investment and operation cost, secondary pollution, unsatisfactory purification and the like of tail water treated by a sewage plant in the prior art.

The technical scheme adopted by the invention for solving the technical problems is as follows:

an integrated wetland water purification system comprising: the dechlorination system, dechlorination system entrance point and sewage treatment system intercommunication, dechlorination system exit end and purification water reservoir intercommunication, purification water reservoir and undercurrent plant purification pond entrance point intercommunication, undercurrent plant purification pond exit end and undercurrent reservoir's entrance point intercommunication, the undercurrent reservoir has undercurrent delivery port and surface current plant purification pond entrance point intercommunication, surface current plant purification pond exit end and surface current reservoir entrance point intercommunication, the surface current reservoir passes through surface current outlet pipe and artificial lake intercommunication, the water level height reduces in proper order between dechlorination system, purification water reservoir, undercurrent plant purification pond, undercurrent reservoir, surface current plant purification pond, surface current reservoir and the artificial lake, makes rivers naturally flow through the action of gravity.

The comprehensive wetland water purification system comprises a water cooling tank, wherein a water spraying tank is supported in the middle of the water cooling tank through a support, a water spraying system is arranged in the water spraying tank, the water spraying system takes water from the water cooling tank and sprays the water to the water spraying tank, and the water spraying tank is communicated with a purified water storage tank through a purification drain pipe.

According to the comprehensive wetland purified water system, the upper part of the purified water storage tank is provided with the control room, the control room is internally provided with the water sample detector, the water sample detector takes water from the water spray tank through the water taking system of the detector and detects the water sample, and the water sample detector is provided with the signal transmitting device which transmits a detection result to the client of a worker.

The comprehensive wetland water purification system is characterized in that a pebble packing layer, a gravel packing layer, a ceramsite packing layer and a planting soil layer are sequentially arranged in an underflow plant purification tank from bottom to top, various purified plants are planted on the planting soil layer, a purified water outlet hole is formed in one side of the purified water storage tank, and the purified water outlet hole is communicated with the underflow plant purification tank.

According to the comprehensive wetland water purification system, the undercurrent plant purification tank is provided with a plurality of undercurrent tank partition boards in the direction vertical to the flow direction of water flow, the undercurrent tank partition boards divide the undercurrent plant purification tank into a plurality of independent planting areas, and partition board communication holes are formed in the lower portion of each undercurrent tank partition board and on the two side walls of the undercurrent plant purification tank, so that the purified water storage tank, the undercurrent plant purification tank and the undercurrent water storage tank are communicated.

According to the comprehensive wetland water purification system, the purified plants planted in the independent planting areas are the same or different, the undercurrent area root control partition plate is arranged between the ceramsite packing layer and the planting soil layer, and the undercurrent area root control partition plate controls the roots of the purified plants to grow towards a specific direction.

The invention relates to a comprehensive wetland water purification system, wherein an undercurrent region water-proof layer is arranged at the bottom of a pebble packing layer.

According to the comprehensive wetland water purification system, a plurality of surface flow area planting islands are arranged in the surface flow plant purification tank at intervals, surface flow area root control partition plates are arranged on two sides of each surface flow area planting island, filling and blocking are performed between the surface flow area planting islands through a broken stone partition layer, and plants are planted on the surface flow area planting islands.

According to the comprehensive wetland water purification system, the irrigation spraying system is embedded in the planting soil layer and is provided with a plurality of irrigation main pipes connected in parallel, a plurality of irrigation spray pipes are arranged on each irrigation main pipe in the vertical direction, irrigation spray nozzles are arranged at the tops of the irrigation spray pipes, the irrigation main pipes are communicated with irrigation water taking pipes, the irrigation water taking pipes extend into the surface flow plant purification tank to take water, and the end parts of the irrigation water taking pipes are provided with irrigation water taking pumps.

The invention relates to a comprehensive wetland water purification system, which comprises a water spraying ring pipe, wherein the water spraying ring pipe is communicated with a water suction pipe, the end part of the water suction pipe is provided with a water suction pump, the water suction pump is arranged below the water surface of a water cooling tank, the water spraying ring pipe is circumferentially provided with a plurality of vertical upward water spraying vertical pipes, the top of each water spraying vertical pipe is provided with a spray head, the spray head is positioned in the middle of the water spraying ring pipe and is connected with a vertical central pipe, the top of the vertical central pipe is provided with a spray head, and the vertical central pipe and each water spraying vertical pipe are provided with a water spraying support rod.

The invention has the following beneficial effects:

1. the method utilizes the physical method of ultraviolet irradiation, airing and spraying to accelerate the volatilization of chloride ions, achieves the aim of removing the chloride ions, does not generate secondary pollution and thoroughly purifies. In addition, the chlorine removal area is provided with an automatic water sample detector, and the water quality detection data result is transmitted to a control center or a mobile phone of a manager through remote transmission equipment for decision of a management layer and how to process the next step.

2. And automatically taking water to detect a water sample, controlling each purification function partition to reach the standard, and entering the next purification partition.

3. The undercurrent plant purification tank is divided into four stages and is divided into a plurality of zones for purification, a plurality of plant islands are arranged on a surface flow, purification is carried out through different plants and different substrates, a certain amount of fly ash and plant reed partner are doped in a planting soil layer, the effect of removing ammonia nitrogen and phosphorus is better, and the removal rate is increased by more than 3-6%.

4. The root control device is adopted in the horizontal direction under the roots of the plants in different subareas to limit the phenomenon that the roots of different plants are randomly crossed, so that the growth of the roots and the plants is promoted, and the effective purification effect is achieved.

5. Different purification areas are distributed by utilizing natural topography from high to low, and purified water flows from high to low, thereby achieving the effects of energy conservation and environmental protection.

6. The invention can reach the function standard of the artificial wetland for purifying the tail water of the sewage, creates an artificial wetland landscape garden and beautiful landscape enjoying and leisure walking places for cities, creates beautiful landscape pictures by combining the artificial wetland and the nature, has multiple purposes and benefits offspring and descendants.

7. Practice proves that the artificial wetland purified water system has the advantages of large buffer capacity, simple process, low comprehensive construction cost, greatly reduced operation and maintenance cost and good sewage treatment effect.

Drawings

The invention will be further described with reference to the accompanying drawings and examples, in which:

FIG. 1 is a schematic diagram of an embodiment of the present invention;

FIG. 2 is a top view of a water airing pool according to an embodiment of the invention;

FIG. 3 is a schematic view of a water injection system according to an embodiment of the present invention;

FIG. 4 is a schematic diagram of a water sample detector according to an embodiment of the present invention;

FIG. 5 shows an irrigation sprinkler system according to an embodiment of the present invention.

Detailed Description

In order to make the objects, technical solutions and advantages of the embodiments of the present invention clearer, 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 some, but not all, embodiments of the present invention. It should be understood that the specific embodiments described herein are merely illustrative of the invention and are not intended to limit the invention. All other embodiments, which can be obtained by a person skilled in the art without any inventive step based on the embodiments of the present invention, are within the scope of the present invention.

As shown in fig. 1 to 5, an integrated wetland purified water system comprises: a dechlorination system 1, wherein the inlet end of the dechlorination system 1 is communicated with the sewage treatment system 2, the outlet end of the dechlorination system 1 is communicated with the purified water storage tank 600, the purified water storage tank 600 is communicated with the inlet end of the undercurrent plant purification tank 700, the outlet end of the undercurrent plant purification tank 700 is communicated with the inlet end of the undercurrent water storage tank 800, the underflow water storage pool 800 is provided with an underflow water outlet 810 which is communicated with the inlet end of the surface flow plant purification pool 900, the outlet end of the surface flow plant purification tank 900 is communicated with the inlet end of the surface flow water storage tank 1000, the surface flow water storage tank 1000 is communicated with an artificial lake 1030 through a surface flow water outlet pipe 1020, the water level heights among the dechlorination system 1, the purified water storage tank 600, the undercurrent plant purification tank 700, the undercurrent storage tank 800, the surface current plant purification tank 900, the surface current storage tank 1000 and the artificial lake 1030 are sequentially reduced, so that water flows naturally under the action of gravity.

In a preferred embodiment of the present invention, the dechlorination system 1 includes a water cooling tank 100, a water spraying tank 200 is supported at the middle of the water cooling tank 100 through a support, a water spraying system 300 is disposed in the water spraying tank 200, the water spraying system 300 takes water from the water cooling tank 100 and sprays the water into the water spraying tank 200, and the water spraying tank 200 is communicated with a purified water storage tank 600 through a purification drain pipe 530.

In a preferred embodiment of the present invention, a control room 500 is disposed on the upper portion of the purified water storage tank 600, a water sample detector 510 is disposed in the control room 500, the water sample detector 510 takes water from the water spray tank 200 through a detector water taking system 520 and detects the water, a signal emitting device 530 is disposed on the water sample detector 510, and the signal emitting device 530 sends a detection result to a client of a worker.

In a preferred embodiment of the present invention, a pebble packing layer 710, a crushed stone packing layer 720, a ceramsite packing layer 730 and a planting soil layer 740 are sequentially arranged in the submerged plant purification tank 700 from bottom to top, various purified plants 750 are planted on the planting soil layer 740, a purified water outlet hole 610 is formed in one side of the purified water storage tank 600, and the purified water outlet hole 610 is communicated with the submerged plant purification tank 700.

In a preferred embodiment of the present invention, a plurality of submerged flow tank partitions 760 are disposed in the submerged flow plant purification tank 700 along a direction perpendicular to a flow direction of water, the submerged flow tank partitions 760 divide the submerged flow plant purification tank 700 into a plurality of independent planting areas, and partition communication holes 761 are disposed at a lower portion of the submerged flow tank partitions 760 and on two side walls of the submerged flow plant purification tank 700, so that the purified water storage tank 600, the submerged flow plant purification tank 700, and the submerged flow water storage tank 800 are communicated with each other.

In a preferred embodiment of the present invention, the purified plants 750 planted in the independent planting areas are the same or different, a underflow area root control partition 770 is disposed between the ceramsite packing layer 730 and the planting soil layer 740, and the underflow area root control partition 770 controls the roots of the purified plants 750 to grow in a specific direction.

In the preferred embodiment of the present invention, the bottom of the pebble packing layer 710 is provided with a undercurrent zone water-proof layer 780.

In a preferred embodiment of the present invention, a plurality of surface flow area planting islands 910 are spaced in the surface flow plant purification tank 900, surface flow area root control partition plates 930 are disposed on two sides of the surface flow area planting islands 910, the surface flow area planting islands 910 are filled and blocked by a crushed stone blocking layer 920, and plants are planted on the surface flow area planting islands 910.

In a preferred embodiment of the present invention, an irrigation spraying system 1100 is embedded in the planting soil layer 740, the irrigation spraying system 1100 has a plurality of irrigation main pipes 1110 connected in parallel, a plurality of irrigation spray pipes 1120 are vertically arranged on the irrigation main pipes 1110, an irrigation spray head 1130 is arranged on the top of each irrigation spray pipe 1120, the irrigation main pipes 1110 are all communicated with an irrigation water intake pipe 1140, the irrigation water intake pipe 1140 extends into the surface flow plant purification tank 900 to take water, and an irrigation water intake pump 1150 is arranged at the end of each irrigation water intake pipe 1140.

In a preferred embodiment of the present invention, the water injection system 300 comprises a water injection loop pipe 310, the water injection loop pipe 310 is communicated with a water suction pipe 400, the water suction pipe 400 is provided with a water suction pump 410 at an end thereof, the water suction pump 410 is disposed below the water surface of the water cooling pool 100, the water injection loop pipe 310 is circumferentially provided with a plurality of vertical upward water injection vertical pipes 320, and the top of the water injection vertical pipes 320 is provided with spray heads 330.

In the preferred embodiment of the present invention, the water sucking pump 410 is connected with a vertical central pipe 350 at the middle position of the water spraying loop 310, the top of the vertical central pipe 350 is provided with a spray head 330, and the vertical central pipe 350 and each water spraying stand pipe 320 are provided with water spraying struts 340.

The working principle is briefly described as follows:

process characteristics

(1) The tail water of the wetland purification water treatment plant is purified by a physical method, and secondary pollution is avoided.

(2) The automatic water sampling detection, control sewage discharge, synthesize water sample detection analyzer, transmit water quality testing data result to control center, implementation process management and control through teletransmission equipment.

(3) The multi-stage plant purification by the artificial wetland is more thorough.

(4) The plant is divided into zones by adopting the root control device, so that the roots of the plants cannot enter other zones, the roots are increased, the development of the roots is promoted, water is drained, and the growth of the plants is promoted.

(5) The automatic detection result can remotely and wirelessly transmit information to a screen of a duty room for display or mobile phone voice prompt, and the water discharge of each purification area is controlled.

(6) By utilizing natural topography, unpowered purification drainage is built, and energy is saved.

(7) The chlorine removing area, the potential flow area, the surface flow area and the carbon dioxide area are arranged from high to low, and the height difference of each area is 350 and 500 mm.

(8) Not only has very effective sewage purification function, but also is a city wetland park for people to see, walk and play.

Constructed wetland purification mechanism

1) Composition of artificial wetland

The artificial wetland is constructed artificially, is similar to a marsh landform type comprehensive ecological system, and effectively avoids the secondary pollution of the environment according to the structural and functional requirements and the material circulation principle.

The artificial wetland can clear up sludge, sewage and the like, so that purified water flows from a specific direction in the wetland treatment process, and physical, chemical and biological effects are realized by utilizing physical factors such as artificial media, soil, plants and the like, so that harmful substances can be removed from the sewage.

The artificial wetland mainly comprises an air-curing volatilization pool, a substrate, plants, a water body, oxygen microorganisms, an impermeable layer and the like. The matrix layer comprises soil, filler and plant root systems; the plant comprises water shallot and reed which can grow under saturated water and anaerobic condition; other aquatic plants such as canna, red tassel, yellow iris, cattail, calamus, pearl sea, fire rat, winter jasmine and the like are also preferable phosphorus and nitrogen removing plants for better purification of the wetland. The water body can flow not only on the substrate layer, but also on the surface layer of the substrate.

The artificial wetland has an action mechanism which is mainly used for realizing the treatment of sewage through various actions such as detention, adsorption, filtration, precipitation, microbial decomposition and replacement and the like.

2) Principle of artificial wetland operation for sewage purification

(1) Removal of chlorine from tail water of sewage treatment plant

The chlorine in the urban sewage treatment generates disinfection by-products while disinfecting and sterilizing, and the tail water is discharged into wetland water (in nature), and residual chlorine has continuous toxic effect on water organisms, so that dechlorination is needed after chlorination and disinfection for protecting aquatic plants. The general dechlorination method comprises the following steps: sun light insolation method; activated carbon filtration; chemical agent method; aeration method, etc. In order to purify water without secondary pollution, a drying and spraying accelerated volatilization method, namely a method of sunscreen in a cooling water tank and accelerating volatilization by a fountain is adopted; and adding activated carbon filtration before draining water and simultaneously discharging chlorine.

(2) Removal of organic matter and nitrogen

The common action of the aquatic plants and the microorganisms in the conventional wetland can realize the purification and treatment of sewage and has strong treatment on organic matters. The artificial wetland can trap unallowable organic matters in water through sedimentation and filtration. The nitrogen in the sewage mainly exists in four forms, including organic nitrogen, nitrite nitrogen, nitrate nitrogen and the like, the nitrogen removal mechanism is that the nitrogen volatilizes after entering the artificial wetland, and then the volatilized nitrogen is fully absorbed by plants by virtue of filler adsorption, filtration, precipitation and the like of the artificial wetland system, and the nitrogen removal is realized by utilizing microbial digestion. Inorganic nitrogen is an important nutrient in plant growth. The plants absorb inorganic nitrogen, plant protein is synthesized, the plants are harvested, and people can effectively remove nitrogen elements in the sewage. In an aerobic environment, under the action of nitrate bacteria and nitrite bacteria, ammonia nitrogen can be converted into nitrate and nitrite; in an anaerobic environment, nitrate can be reduced into nitrogen, and the denitrification effect is achieved, so that the nitrogen removal rate of the artificial wetland is effectively improved.

(3) Removal of phosphorus and suspended matter

The artificial wetland can purify sewage and remove suspended matters and phosphorus elements. In the mechanism of removing the suspended matters, the substrate layer of the artificial wetland surface flow area is relatively flat, the hydraulic gradient is good, the sewage entering the artificial wetland can quickly generate surface flow and overflow, the sewage can completely flow through the substrate layer in the flowing process, and the removal rate of the suspended matters is obviously improved under the action of filtration and precipitation. In the undercurrent area, sewage can slowly flow along the surface, so that suspended matters are continuously settled in the flow, and finally, the suspended matters are removed.

In the purification of the artificial wetland, the physical action, the chemical action, the biological adsorption action and the like can remove fine suspended matters in the sewage. The constructed wetland is mainly used for removing phosphorus by means of microbial accumulation and plant adsorption. The phosphorus removal mechanism of the microorganism is mainly realized by taking up phosphorus by phosphorus accumulating bacteria.

The mutual alternation phenomenon exists in the photosynthesis and the respiration of the artificial wetland plants, and leads the aerobic state and the anaerobic state to alternately appear, and the phosphorus released in the anaerobic state can improve the removal rate of the phosphorus in the aerobic state. Inorganic phosphorus in the sewage can be changed into organic components of plants under the influence of the absorption and assimilation of the plants, and the removal of the phosphorus can be realized by harvesting the plants in the wetland. In addition, the fillers in the undercurrent zone and the surface flow zone also have a certain absorption effect on phosphorus. The filler and calcium and phosphorus in the surface soil have ion exchange reaction and can also remove phosphorus, and the effect is obvious.

Factor of artificial wetland influencing sewage purification

The main factors are: substrate, plant, climate, hydraulic retention time, etc.

(1) Matrix: refers to the filling materials such as pebbles, broken stones, sands, planting soil and the like under the aquatic plants of the artificial wetland, and the substrate is one of the more common important factors. Through experiments, when the substrate is fly ash sludge, the removal rate of nitrogen and phosphorus in raw sewage can be improved by the constructed wetland fused with the plant reed.

(2) Plant: is an important factor influencing the water purification of the artificial wetland. In artificial wetlands, different plants have different water and soil resistance. The reasonable selection of plants ensures the biological diversity of the artificial wetland system and improves the sewage purification efficiency. Such as: relevant research experiments prove that the nitrogen removal rate in spring of planted canna and reed is 58-68%; and the nitrogen removal rate in summer exceeds 85.

(3) Climate: the sewage purification level of the artificial wetland is affected. Affected by the temperature of the air, the sewage purification effect at low temperature is limited. The temperature is controlled to be between 20 and 25 ℃ optimally; the treatment effect is obviously reduced below 10 ℃; when the water temperature is not higher than 4 deg.C, the digestion effect is gradually stopped.

(4) Hydraulic retention time: the method is an important factor influencing the sewage purification effect of the artificial wetland, mainly the total retention time of the sewage is closely related to the sewage purification effect of the artificial wetland, and generally, the longer the hydraulic retention time is, the better the ammonia nitrogen and total phosphorus removal effect is. The longer the sewage stays in the artificial wetland system, the longer the substrate and the plants can have enough time to adsorb and remove ammonia nitrogen, total phosphorus and the like in the sewage. The removal rate of ammonia nitrogen and total phosphorus is improved. And vice versa. A reasonable hydraulic retention time must be chosen.

Principal parameters

(1) The area S of the water drying pool is 3600-; the height H of the pool is 1300-1800 mm; 3000 square meter with water spraying pool 200 area s ═ 1200-

(2) The undercurrent plant purification tank 700 is divided into four subareas, such as canna, yellow iris, resurrection lily, and the like, and the area of each subarea is 100 plus 400 square meters;

500 plus 800mm thick clay is tamped under the 700 facilities of the undercurrent plant purification tank, and the geotextile is 3mm (400 g/square meter); purifying plant 750 lower filler from bottom to top: the pebble packing layer 710 is 400-500mm thick and has the grain diameter of 80-130 mm; 250 and a 400mm thick gravel packing layer 720 with the particle size of 30-60 mm; 300-400mm thick ceramsite packing layer 730; and the thickness of the root control clapboard 770 and the planting soil layer 740 in the undercurrent area is 400-600 mm.

The area of the surface flow plant purification pool is 8000 plus one square meter (15000 square meter), a plurality of surface flow area planting islands 910 are divided (10-15), the water purification intervals among the surface flow area planting islands 910 are 300 plus one 500mm of cohesive soil and 3mm of geotextile (400 g/square meter); 250-350mm gravel filter layer; planting soil with the thickness of 300-500mm below the plants; the periphery of the surface flow area planting island 910 is separated from the gravel partition 920 by a surface flow area root control baffle 930.

(2) The chlorine removal area, the undercurrent area, the surface flow area and the carbon dioxide area are respectively 800mm from the upper part to the lower part.

(3) The total retention time T of the tail water in the wetland purification area is T1+ T2+ T3

Note: t1 is the duration of chlorine removal and sunscreen; t2 residence time of purified water in undercurrent zone; t3 retention time of purified water in the surface flow zone;

(4) the fly ash with the planting soil parameter of 3-8% in the substrate is matched with reed plants, so that the removal rate of ammonia nitrogen and phosphorus can be improved by 3-6%; (5) dechlorination sprinkling system:

calculating the flow:

Q＝9πd²*V/10⁴

in the formula: q- -estimated flow (m)³H); d- -inside diameter of the pipe (mm); v- -economic flow rate (1.5-2.3m/s)

Actual daily water demand:

actual daily water demand PDA ═ CF × ET/CI/CP

Irrigation efficiency table CI

Irrigation type	Coefficient range
		Dropper	80-90％
Rotary spray head	70-80％
		Scattering spray head	60-70％

CF takes a value of 0.3 to 0.6; the grouping efficiency of the CP nozzles is generally 95 percent

ET value (mm/day)

In the description of the present invention, it should be noted that the terms "center", "longitudinal", "lateral", "up", "down", "front", "back", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", etc., indicate orientations or positional relationships based on those shown in the drawings, and are only for convenience of description and simplicity of description, but do not indicate or imply that the referred device or element must have a specific orientation, be constructed and operated in a specific orientation, and thus, should not be construed as limiting the present invention. Furthermore, the terms "first" and "second" are used for descriptive purposes only and are not to be construed as indicating or implying relative importance.

In the description of the present invention, it should be noted that, unless otherwise explicitly specified or limited, the terms "mounted," "connected," and "connected" are to be construed broadly, e.g., as meaning either a fixed connection, a removable connection, or an integral connection; can be mechanically or electrically connected; they may be connected directly or indirectly through intervening media, or they may be interconnected between two elements. The specific meanings of the above terms in the present invention can be understood in specific cases to those skilled in the art. In addition, in the description of the present invention, "a plurality" means two or more unless otherwise specified.

It will be understood that modifications and variations can be made by persons skilled in the art in light of the above teachings and all such modifications and variations are intended to be included within the scope of the invention as defined in the appended claims.

Claims

1. A comprehensive wetland purified water system is characterized by comprising: dechlorination system (1), dechlorination system (1) entrance point and sewage treatment system (2) intercommunication, dechlorination system (1) exit end and purification water reservoir (600) intercommunication, purification water reservoir (600) and undercurrent plant purification pond (700) entrance point intercommunication, undercurrent plant purification pond (700) exit end and the entrance point intercommunication of undercurrent reservoir (800), undercurrent reservoir (800) have undercurrent delivery port (810) and surface flow plant purification pond (900) entrance point intercommunication, surface flow plant purification pond (900) exit end and surface flow reservoir (1000) entrance point intercommunication, surface flow reservoir (1000) are through surface flow outlet pipe (1020) and artifical lake (1030) intercommunication, dechlorination system (1), purification water reservoir (600), undercurrent plant purification pond (700), surface flow reservoir (800), surface flow plant purification pond (900), The water level between the surface flow water storage tank (1000) and the artificial lake (1030) is reduced in sequence, so that water flows naturally under the action of gravity.

2. The comprehensive wetland water purification system according to claim 1, wherein the dechlorination system (1) comprises a water cooling tank (100), a water spraying tank (200) is supported in the middle of the water cooling tank (100) through a support, a water spraying system (300) is arranged in the water spraying tank (200), the water spraying system (300) takes water from the water cooling tank (100) and sprays the water into the water spraying tank (200), and the water spraying tank (200) is communicated with the purified water storage tank (600) through a purification drain pipe (530).

3. The integrated wetland purified water system according to claim 2, wherein a control room (500) is arranged at the upper part of the purified water storage tank (600), a water sample detector (510) is arranged in the control room (500), the water sample detector (510) is used for taking water from the water spray tank (200) through a detector water taking system (520) and detecting the water, a signal emitting device (530) is arranged on the water sample detector (510), and the signal emitting device (530) is used for sending the detection result to a client of a worker.

4. The comprehensive wetland water purification system according to claim 1, wherein a pebble packing layer (710), a gravel packing layer (720), a ceramsite packing layer (730) and a planting soil layer (740) are sequentially arranged in the subsurface flow plant purification tank (700) from bottom to top, various purified plants (750) are planted on the planting soil layer (740), a purified water outlet hole (610) is formed in one side of the purified water storage tank (600), and the purified water outlet hole (610) is communicated with the subsurface flow plant purification tank (700).

5. The integrated wetland water purification system according to claim 4, wherein a plurality of subsurface flow tank partitions (760) are arranged in the subsurface flow plant purification tank (700) along the direction perpendicular to the water flow direction, the subsurface flow tank partitions (760) divide the subsurface flow plant purification tank (700) into a plurality of independent planting areas, and partition communication holes (761) are formed in the lower portion of each subsurface flow tank partition (760) and on the two side walls of the subsurface flow plant purification tank (700), so that the purified water storage tank (600), the subsurface flow plant purification tank (700) and the subsurface flow water storage tank (800) are communicated.

6. The comprehensive wetland water purification system according to claim 5, wherein the purified plants (750) planted in the independent planting areas are the same or different, a undercurrent area root control clapboard (770) is arranged between the ceramsite filler layer (730) and the planting soil layer (740), and the undercurrent area root control clapboard (770) controls the roots of the purified plants (750) to grow towards a specific direction.

7. The comprehensive wetland water purification system according to claim 6, wherein a plurality of surface flow area planting islands (910) are arranged in the surface flow plant purification tank (900) at intervals, surface flow area root control partition plates (930) are arranged on two sides of each surface flow area planting island (910), filling and blocking are carried out between the surface flow area planting islands (910) through a gravel partition layer (920), and plants are planted on the surface flow area planting islands (910).

8. The comprehensive wetland water purification system according to claim 5, wherein an irrigation spraying system (1100) is buried in the planting soil layer (740), the irrigation spraying system (1100) is provided with a plurality of irrigation main pipes (1110) which are connected in parallel, a plurality of irrigation spray pipes (1120) are arranged on the irrigation main pipes (1110) along the vertical direction, irrigation spray nozzles (1130) are arranged at the tops of the irrigation spray pipes (1120), the irrigation main pipes (1110) are all communicated with an irrigation water taking pipe (1140), the irrigation water taking pipe (1140) extends into a surface flow plant purification tank (900) to take water, and an irrigation water taking pump (1150) is arranged at the end part of the irrigation water taking pipe (1140).

9. The integrated wetland water purification system according to claim 1, wherein the water injection system (300) comprises a water injection ring pipe (310), the water injection ring pipe (310) is communicated with a water suction pipe (400), the end of the water suction pipe (400) is provided with a water suction pump (410), the water suction pump (410) is arranged below the water surface of the water cooling tank (100), the water injection ring pipe (310) is circumferentially provided with a plurality of vertical water injection vertical pipes (320), and the top of each water injection vertical pipe (320) is provided with a spray head (330).

10. The integrated wetland water purification system according to claim 9, wherein the water suction pump (410) is connected with a vertical central pipe (350) at the middle position of the water spray ring pipe (310), the top of the vertical central pipe (350) is provided with a spray head (330), and the vertical central pipe (350) and each water spray stand pipe (320) are provided with water spray struts (340).