CN105540864A - Industrial construction method of constructed wetland - Google Patents
Industrial construction method of constructed wetland Download PDFInfo
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- CN105540864A CN105540864A CN201610113964.6A CN201610113964A CN105540864A CN 105540864 A CN105540864 A CN 105540864A CN 201610113964 A CN201610113964 A CN 201610113964A CN 105540864 A CN105540864 A CN 105540864A
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- C—CHEMISTRY; METALLURGY
- C02—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
- C02F—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
- C02F3/00—Biological treatment of water, waste water, or sewage
- C02F3/32—Biological treatment of water, waste water, or sewage characterised by the animals or plants used, e.g. algae
- C02F3/327—Biological treatment of water, waste water, or sewage characterised by the animals or plants used, e.g. algae characterised by animals and plants
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- A—HUMAN NECESSITIES
- A01—AGRICULTURE; FORESTRY; ANIMAL HUSBANDRY; HUNTING; TRAPPING; FISHING
- A01G—HORTICULTURE; CULTIVATION OF VEGETABLES, FLOWERS, RICE, FRUIT, VINES, HOPS OR SEAWEED; FORESTRY; WATERING
- A01G31/00—Soilless cultivation, e.g. hydroponics
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- A—HUMAN NECESSITIES
- A01—AGRICULTURE; FORESTRY; ANIMAL HUSBANDRY; HUNTING; TRAPPING; FISHING
- A01G—HORTICULTURE; CULTIVATION OF VEGETABLES, FLOWERS, RICE, FRUIT, VINES, HOPS OR SEAWEED; FORESTRY; WATERING
- A01G31/00—Soilless cultivation, e.g. hydroponics
- A01G31/02—Special apparatus therefor
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- A—HUMAN NECESSITIES
- A01—AGRICULTURE; FORESTRY; ANIMAL HUSBANDRY; HUNTING; TRAPPING; FISHING
- A01G—HORTICULTURE; CULTIVATION OF VEGETABLES, FLOWERS, RICE, FRUIT, VINES, HOPS OR SEAWEED; FORESTRY; WATERING
- A01G9/00—Cultivation in receptacles, forcing-frames or greenhouses; Edging for beds, lawn or the like
- A01G9/14—Greenhouses
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- C—CHEMISTRY; METALLURGY
- C02—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
- C02F—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
- C02F3/00—Biological treatment of water, waste water, or sewage
- C02F3/34—Biological treatment of water, waste water, or sewage characterised by the microorganisms used
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- C—CHEMISTRY; METALLURGY
- C02—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
- C02F—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
- C02F2203/00—Apparatus and plants for the biological treatment of water, waste water or sewage
- C02F2203/006—Apparatus and plants for the biological treatment of water, waste water or sewage details of construction, e.g. specially adapted seals, modules, connections
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- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02A—TECHNOLOGIES FOR ADAPTATION TO CLIMATE CHANGE
- Y02A40/00—Adaptation technologies in agriculture, forestry, livestock or agroalimentary production
- Y02A40/10—Adaptation technologies in agriculture, forestry, livestock or agroalimentary production in agriculture
- Y02A40/25—Greenhouse technology, e.g. cooling systems therefor
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- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02P—CLIMATE CHANGE MITIGATION TECHNOLOGIES IN THE PRODUCTION OR PROCESSING OF GOODS
- Y02P60/00—Technologies relating to agriculture, livestock or agroalimentary industries
- Y02P60/20—Reduction of greenhouse gas [GHG] emissions in agriculture, e.g. CO2
- Y02P60/21—Dinitrogen oxide [N2O], e.g. using aquaponics, hydroponics or efficiency measures
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- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02W—CLIMATE CHANGE MITIGATION TECHNOLOGIES RELATED TO WASTEWATER TREATMENT OR WASTE MANAGEMENT
- Y02W10/00—Technologies for wastewater treatment
- Y02W10/10—Biological treatment of water, waste water, or sewage
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- Life Sciences & Earth Sciences (AREA)
- Microbiology (AREA)
- Environmental Sciences (AREA)
- Engineering & Computer Science (AREA)
- Water Supply & Treatment (AREA)
- Biodiversity & Conservation Biology (AREA)
- Hydrology & Water Resources (AREA)
- Environmental & Geological Engineering (AREA)
- Chemical & Material Sciences (AREA)
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- Botany (AREA)
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- Purification Treatments By Anaerobic Or Anaerobic And Aerobic Bacteria Or Animals (AREA)
Abstract
The invention relates to an industrial construction method of an efficient and high-yield constructed wetland. The method comprises steps as follows: (1) constructing a plastic greenhouse; (2) constructing a multi-stage pure water culture vertical flow constructed wetland in the plastic greenhouse; (3) producing a seedbed from plant fibers; (4) culturing target plants on the seedbed; (5) placing the seedbed carrying the target plants on the vertical flow constructed wetland; (6) taking away the seedbed and the plants as a whole after a period to use the whole as a biological material or an economic product. Efficient purification and high yield of plant materials are realized through maximum absorption and utilization of pollutants by the target plants in the fast vegetative growth period, the industrialization construction mode can be realized, domestic sewage, aquaculture wastewater, industrial wastewater, reclaimed water in sewage treatment plants and the like can be purified efficiently, and the high economic value is created. The constructed wetland has the characteristics that the constructed wetland occupies a small area, is not affected by seasons and regions and is economical and efficient, is particularly suitable to be constructed around factory parks, rural areas and polluted water bodies and can realize the win-win effect of pollution control and economy.
Description
Technical field
The invention belongs to ecological restoration technical field, be specifically related to a kind of efficient high yield artificial swamp industrialization construction process.
Background technology
Artificial swamp can utilize the strengthened purification of physics in the ecosystem, chemistry and biological triple role realization to sewage.The advantage such as utilize artificial swamp decontamination to have compared with other water conditioning methods to build economy, convenient management, power consumption few; Obtain all over the world at present and pay attention to more and more widely.The artificial swamp taking into account soil removability and economic benefit is the development trend of constitution wetland investigation and application of future generation.
According to water distribution manner, artificial swamp can be divided into free water surface wetland, current wetland and vertical-flow wetland.Vertical current constructed wetland surface water distribution is even, and current input, output and the residence time have high controllability, enter, be easy to watercourse aeration from wetland upper strata.Therefore, vertical current constructed wetland is the most favourable with assistance quick growth of plant for quick reoxygenation.
Use various filler as matrix in general artificial swamp, these matrix at first can the pollution substance such as adsorption of nitrogen phosphorus, but all exist can be saturated problem, as changed matrix not in time after saturated, can discharge pollutent on the contrary enters water body, becomes source of pollution.
Along with population increases and economic growth, the water pollution issue of China becomes increasingly conspicuous, and sewage treatment capacity is still inadequate.By the end of 2010, whole nation treatment rate of domestic sewage of establishing the city was only 77.4%, and domestic sewage in rural areas is collected and is also in the starting stage; 2013, whole nation industry and town sewage total emission volumn 695.4 hundred million tons, wastewater treatment rate 87%, and the same year, rural domestic sewage treatment rate was only 8%.Structure can the high-efficiency artificial wetland of industrialization, while purifying waste water, can gather in the crops the economy return of great number, will play an important role for the water pollutions solving China.
Summary of the invention
In order to solve the problems of the technologies described above, technical purpose of the present invention is to design a kind of artificial swamp industrialization construction process, by building the selection of plastic greenhouse, multistage pure water training vertical current constructed wetland, vegetable material seedbed and efficient economy plant, for the construction of economical and efficient artificial swamp provides technical support.
Concrete technical scheme is:
A kind of artificial swamp industrialization construction process, comprises the following steps:
(1) plastic greenhouse is built:
Plastic greenhouse is made up of White plastic film and Steel bar rack, and film is detachable, and temperature covers plastics film lower than when 20 DEG C, and temperature removes plastics film higher than when 20 DEG C.Booth scale is built according to actual needs, and object ensures that efficient high yield artificial swamp is not subject to the impact of season and region.Plastic greenhouse is structured near sewage source, constant for holding temperature, ensures the growth temperature independent of target plant.
(2) multistage pure water training vertical current constructed wetland is built:
Vertical current constructed wetland is the cement pit of width 2 meters, and length is determined according to booth length, is beneficial to change the manual operations such as seedbed.Constructed vertical current constructed wetland, without filling substrate, builds pure water training condition; Pure water training condition water distribution is even, and Pollutant distribution is also thereupon even, facilitates root system of plant to absorb; Vertical current constructed wetland with sandy matrix is compared, and under same sewage load and plant growing condition, pure water training condition can improve nitrogen and the tp removal rate of more than 30%, the BOD of about 20%
5with COD clearance; Water level, between 20 ~ 50cm, is determined according to the size of target plant; Inhalent siphon is equal with the water surface, rising pipe is dried up end 5cm, prevents from being blocked by sedimentation drift.Constructed vertical current constructed wetland is divided into 3 grades, primary purifying pond, secondary stage purified pond and final purification tank.Sewage through settling tank pre-treatment, enters primary purifying pond before entering primary purifying pond after precipitating soluble pollutent, sewage is received in primary purifying pond, and the water after from the purification of elementary pond is received in secondary stage purified pond, and final purification tank receives the water after sub-basin purification.Secondary and final purification tank, successively lower than primary purifying pond horizontal plane 20-50cm, makes rising pipe and subordinate's treating pond water inlet pipe level, and between guarantee pond and pond, water body flow is without the need to power.Hazardous contaminant is removed in the effect of primary purifying pond, enters secondary stage purified pond when hazardous contaminant clearance reaches Treated sewage reusing standard; Secondary stage purified pond, for removing the nutritive substances such as nitrogen phosphorus, by the sorption of root system of plant, is removed nutritive salt further, when reaching more than water environment quality standard (GB3838-2002) IV class water, water is entered final purification tank; Final purification tank is for cultivating target plant seedling, and seedling can continue to absorb water Middle nutrition material, and purify water further, water outlet reaches GB surface water III class standard.Wherein, primary purifying pond, secondary stage purified pond and final purification tank all can require to repeat to build several according to purification of water quality requirement or economic benefit.Wherein, when total nitrogen concentration is higher than 1000mg/L in the sewage that primary purifying pond is received, with final purification tank water outlet, sewage is diluted, reach 500mg/L or following, avoid producing plant root poisoning.
The structure of multistage pure water training vertical current constructed wetland, provide not only the artificial swamp of efficient high purification rate, also provides guarantee for high yield and economic benefit.
(3) seedbed is made with vegetable fibre:
Nursery pocket and support are worked out by the fiber of target plant in primary purifying pond in seedbed, can be with plant integral replacing together.The whole plants body of the target plant of lignocellulosic fiber source in primary purifying pond or seedbed, be made into stand-by straw rope through straw-rope machine.
The seedbed of vegetable fibre, on the one hand due to loose, does not hinder dissolved oxygen and pollutent evenly to spread, and can provide matrix for target plant root is wound around; The particulate matter of some precipitations can be adsorbed on the other hand, assist to purify water, for plant-growth provides nutrient.The seedbed that vegetable fibre makes, comprises nursery pocket, support and static line; Described nursery pocket width 10-20cm, height 5-20cm, woven by vegetable fibre and form, Fibre diameter and nursery blanket net hole size are determined according to target plant size, diameter range 0.5-1cm, mesh diameter 1-2cm, can support thus fixing plant for plant root provides to be wound around, does not hinder again water body unrestricted flow to be as the criterion; Described support, both sides are the concrete reinforcement bar of diameter 5cm, are fixed on the outside of vertical-flow wetland, and upper end is the hawser of the diameter 5cm of vegetable fibre braiding, and two ends are fixed on steel bar column, middle unsettled on the water surface of vertical-flow wetland, for suspension nursery pocket; Described static line is woven by the vegetable fibre of diameter 5cm and forms, and is fixed on the steel bar column at two ends, is also fixed on the hawser of support on the hawser of support by nursery pocket.
(4) on seedbed, target plant is cultivated:
The cultivation of target plant is carried out in final purification tank.Target plant selects high-effective cleansing and economic plants, determine according to different sewage type and treating pond rank, the plant of the high-effective cleansings such as reed, cattail, Medulla Junci and nutgrass flatsedge is selected in primary purifying pond, herbage, artificial lawn, flowers and vegetables economic plants are selected in secondary stage purified pond, as lawn, flowers, herbage, vegetables etc., final purification tank is used for the seedling of training objective plant, before seedling reaches the Sheng phase of nourishing and growing, move into elementary or secondary stage purified pond; Nourish and grow after the Sheng phase terminates until target plant, seedbed in integral replacing primary and secondary treating pond and plant, the plant be replaced and seedbed, for generation of economic benefit, according to the difference of target plant kind, can be used as biomaterial, fuel, lawn, feed, flowers or vegetables etc.
(5) vertical current constructed wetland is put in seedbed together with plant:
Target plant after final purification tank is cultivated, is closely linked with seedbed, can move in elementary or secondary stage purified pond with seedbed entirety, utilize the quick growth of plant, pollutent in rapid absorption water body, reaches both purifying water bodies, produces again the object of large number of biological amount.
(6) seedbed is changed:
When the vegetation growth of plant phase in primary purifying pond terminates, growth velocity starts to decline, take out together with seedbed, a part is as the vegetable fibre in braiding seedbed, and rest part is sold as biomaterial (papermaking, biofuel etc.); Plant in secondary stage purified pond is taken out after reaching the specification can selling requirement, for creating economic worth; Before plant in final purification tank reaches fast growing period, the elementary or secondary stage purified pond of overall immigration together with seedbed.
The artificial swamp industrialization construction process of the present invention's design has following beneficial effect:
1, artificial swamp industrialization construction process of the present invention can realize the suitability for industrialized production of artificial wet land treating system.
2, method of the present invention is by building the artificial swamp unit of efficient high yield, effectively can purify water, make pollutants removal rate in water body reach more than 90%, produce high economic worth simultaneously; Take up an area few, environment-friendly high-efficiency, high financial profit, and not by season and regional impact, the doulbe-sides' victory object having pollution treatment concurrently Yu develop the economy, is particularly suitable for building around factory garden, rural area, polluted-water.
3, the vertical current constructed wetland adopting the inventive method to build, because water distribution is even, Pollutant distribution is also thereupon even, facilitates root system of plant to absorb; Vertical current constructed wetland with sandy matrix is compared, and under same sewage load and plant growing condition, pure water training condition can improve nitrogen and the tp removal rate of more than 30%, the BOD of about 20%
5with COD clearance, therefore, from a long-term perspective, the artificial swamp of complete water planting condition exceedes containing matrix artificial wetland on the contrary to the removal effect of soluble contaminants, and purification efficiency is higher.
4, the vertical current constructed wetland adopting the inventive method to build, clean effect mainly relies in plant absorption utilization, and when plant-growth is fast, nutrient removal speed is also fast; Therefore, utilize plant-growth to process sewage the fastest vegetative growth phase, can reach rapidly the effect of purifying waste water, plant is also because have sufficient and uniform source of nutrition, and growth is not restricted.
5, the vertical current constructed wetland adopting the inventive method to build, the target plant produced in employing system weaves botanical seedling culturing pocket and seedbed as the source of vegetable fibre, plant, nursery pocket and seedling bed can become the entirety in a material, can bulk migration and recycling, thus make plant reusable edible, the High-efficient Production in artificial swamp, save time, material and cost, continue to produce economic benefit.
Accompanying drawing explanation
Fig. 1 is the artificial swamp schematic diagram that the present invention builds;
Diagram: 1, plastic greenhouse; 2, primary purifying pond; 3, secondary stage purified pond; 4, final purification tank.
Fig. 2 is the vegetable fibre seedbed schematic diagram that the present invention builds;
Diagram: 2-1, target plant; 2-2, static line; 2-3, nursery pocket; 2-4, Steel bar rack.
Embodiment
For a better understanding of the present invention, explanation is set forth further with specific embodiment below.
embodiment 1
As shown in Figure 1, a kind of artificial swamp industrialization construction process of the present embodiment, for purifying domestic sewage and breeding wastewater, produce vegetables or herbage simultaneously, comprising:
(1) plastic greenhouse is built:
Plastic greenhouse is made up of White plastic film and Steel bar rack, and film is detachable, booth width 5 meters, and height 5 meters, length 35 meters, temperature covers plastics film lower than when 20 DEG C, and temperature removes plastics film higher than when 20 DEG C.
(2) multistage pure water training vertical current constructed wetland is built:
Vertical current constructed wetland cement pit width 2 meters, primary purifying pond length 5 meters, height 60cm, width 2 meters; Secondary stage purified pond length 5 meters, height 40cm, width 2 meters; Final purification tank length 20 meters, height 30cm, width 2 meters.Constructed vertical current constructed wetland, without filling substrate, builds pure water training condition; Primary purifying pool water level 50cm; Secondary stage purified pool water level 30cm, final purification tank water level 20cm.Sewage through settling tank pre-treatment, enters primary purifying pond before entering primary purifying pond after precipitating soluble pollutent, sewage is received in primary purifying pond, and the water after from the purification of elementary pond is received in secondary stage purified pond, and final purification tank receives the water after sub-basin purification.Wherein, when total nitrogen concentration is higher than 1000mg/L in the sewage that primary purifying pond is received, with final purification tank water outlet, sewage is diluted, reach 500mg/L or following, avoid producing plant root poisoning.Secondary stage purified pond is lower than primary purifying pond horizontal plane 25cm, and final purification tank, lower than secondary stage purified pond 15cm, makes rising pipe and subordinate's treating pond water inlet pipe level, ensures that between pond and pond, water body flow is without the need to power.
(3) seedbed is made with vegetable fibre:
As shown in Figure 2, the seedbed that vegetable fibre makes, comprises nursery pocket, support and static line; Described nursery pocket width 20cm, height 20cm, woven by vegetable fibre and form, and Fibre diameter and nursery blanket net hole size are determined according to target plant size, for the Fibre diameter 1cm of target plant is cultivated in primary purifying pond, and nursery blanket net bore dia 2cm; For the Fibre diameter 0.5cm of target plant is cultivated in secondary stage purified pond, nursery blanket net bore dia 1cm; Described support, both sides are the concrete reinforcement bar of diameter 5cm, are fixed on the outside of vertical-flow wetland, and upper end is the hawser of the diameter 5cm of vegetable fibre braiding, and two ends are fixed on steel bar column, middle unsettled on the water surface of vertical-flow wetland, for suspension nursery pocket; Described static line is woven by the vegetable fibre of diameter 5cm and forms, and is fixed on the steel bar column at two ends, is also fixed on the hawser of support on the hawser of support by nursery pocket.
(4) on seedbed, target plant is cultivated:
The cultivation of target plant is carried out in final purification tank.Owing to there is part heavy metal, microbiotic and the pollutent such as nitrogen phosphorus and COD in breeding wastewater, after primary purifying reduces nitrogen phosphorus and COD, can be used for the cultivation of the plant such as flowers, lawn.Therefore, the plant that Plant choosing reed seedbed cultivated, cattail, Medulla Junci, nutgrass flatsedge, conjunction sprout, Chinese celery, Pink Reineckea Herb and sheep hoof etc. are efficiently purified waste water is for primary purifying pond; Used plant in artificial swamp has kind more than 80 in the whole world, and this several plant is that frequency of utilization is the highest and be recognized the best plant of wastewater purifying efficiency, and takes into account clean Greenhouse effect potentiality and landscaping; Also cultivating the plant such as flowers, lawn is used in secondary stage purified pond simultaneously; As detected without hazardous contaminant, also vegetables can be cultivated in secondary stage purified pond.In final purification tank, cultivate the seedling of above-mentioned plant, before entering the Sheng phase of nourishing and growing, for substituting the plant in primary and secondary treating pond.
(5) vertical current constructed wetland is put in seedbed together with plant:
Target plant after final purification tank is cultivated, is closely linked with seedbed, can move in elementary or secondary stage purified pond with seedbed entirety, utilize the quick growth of plant, pollutent in rapid absorption water body, reaches both purifying water bodies, produces again the object of large number of biological amount.
(6) seedbed is changed:
When the vegetation growth of plant phase in primary purifying pond terminates, growth velocity starts to decline, take out together with seedbed, a part uses as the vegetable fibre in braiding seedbed, and all the other are used as biomaterial (papermaking, biofuel etc.); Plant in secondary stage purified pond is taken out after reaching the specification can selling requirement, for creating economic worth; Before plant in final purification tank reaches fast growing period, the elementary or secondary stage purified pond of overall immigration together with seedbed.
embodiment 2
A kind of artificial swamp industrialization construction process of the present embodiment, for purifying plant effuent and the economic plants such as production lawn and flowers, comprising:
(1) plastic greenhouse is built:
Plastic greenhouse is made up of White plastic film and Steel bar rack, and film is detachable, booth width 15 meters, and height 5 meters, length 55 meters, temperature covers plastics film lower than when 20 DEG C, and temperature removes plastics film higher than when 20 DEG C.
(2) multistage pure water training vertical current constructed wetland is built:
Vertical current constructed wetland cement pit width 2 meters, primary purifying pond length 10 meters, height 60cm, width 2 meters; Secondary stage purified pond length 20 meters, height 30cm, width 2 meters; Final purification tank length 20 meters, height 20cm, width 2 meters.Constructed vertical current constructed wetland, without filling substrate, builds pure water training condition; Primary purifying pool water level 50cm; Secondary stage purified pool water level 20cm, final purification tank water level 10cm.Sewage through settling tank pre-treatment, enters primary purifying pond before entering primary purifying pond after precipitating soluble pollutent, sewage is received in primary purifying pond, and the water after from the purification of elementary pond is received in secondary stage purified pond, and final purification tank receives the water after sub-basin purification.Wherein, when total nitrogen concentration is higher than 1000mg/L in the sewage that primary purifying pond is received, with final purification tank water outlet, sewage is diluted, reach 500mg/L or following, avoid producing plant root poisoning.Secondary stage purified pond is lower than primary purifying pond horizontal plane 15cm, and final purification tank, lower than secondary stage purified pond 5cm, makes rising pipe and subordinate's treating pond water inlet pipe level, ensures that between pond and pond, water body flow is without the need to power.
(3) seedbed is made with vegetable fibre:
The seedbed that vegetable fibre makes, comprises nursery pocket, support and static line; Described nursery pocket width 10cm, height 10cm, woven by vegetable fibre and form, and Fibre diameter and nursery blanket net hole size are determined according to target plant size, for the Fibre diameter 1cm of target plant is cultivated in primary purifying pond, and nursery blanket net bore dia 2cm; For the Fibre diameter 0.1cm of target plant is cultivated in secondary stage purified pond, nursery blanket net bore dia 0.5cm; Described support, both sides are the concrete reinforcement bar of diameter 5cm, are fixed on the outside of vertical-flow wetland, and upper end is the hawser of the diameter 5cm of vegetable fibre braiding, and two ends are fixed on steel bar column, middle unsettled on the water surface of vertical-flow wetland, for suspension nursery pocket; Described static line is woven by the vegetable fibre of diameter 5cm and forms, and is fixed on the steel bar column at two ends, is also fixed on the hawser of support on the hawser of support by nursery pocket.
(4) on seedbed, target plant is cultivated:
The cultivation of target plant is carried out in final purification tank.Because great majority in trade effluent are containing heavy metal, target plant can only select good purification and people and animals not to eat.Therefore, Plant choosing reed seedbed cultivated, cattail, Medulla Junci, conjunction sprout the plant of efficiently purifying waste water with nutgrass flatsedge etc. for primary purifying; The plant that the people and animals such as lawn, flowers directly do not eat is used for secondary stage purified; As detected without hazardous contaminant, also vegetables can be cultivated in secondary stage purified pond.In final purification tank, cultivate the seedling of above-mentioned plant, before entering the Sheng phase of nourishing and growing, for substituting the plant in primary and secondary treating pond.
(5) vertical current constructed wetland is put in seedbed together with plant:
Target plant after final purification tank is cultivated, is closely linked with seedbed, can move in elementary or secondary stage purified pond with seedbed entirety, utilize the quick growth of plant, pollutent in rapid absorption water body, reaches both purifying water bodies, produces again the object of large number of biological amount.
(6) seedbed is changed:
When the vegetation growth of plant phase in primary purifying pond terminates, growth velocity starts to decline, take out together with seedbed, use as braiding seedbed and biomaterial (papermaking, biofuel etc.); Plant in secondary stage purified pond is taken out after reaching the specification can selling requirement, for creating economic worth; Before plant in final purification tank reaches fast growing period, the elementary or secondary stage purified pond of overall immigration together with seedbed.
embodiment 3
A kind of artificial swamp industrialization construction process of the present embodiment, for purifying water in widespread pollution from the overuse of fertilizers and pesticides in rural area and sewage work's discharge, comprising:
(1) plastic greenhouse is built:
Plastic greenhouse is made up of White plastic film and Steel bar rack, and film is detachable, booth width 20 meters, and height 5 meters, length 15 meters, temperature covers plastics film lower than when 20 DEG C, and temperature removes plastics film higher than when 20 DEG C.
(2) multistage pure water training vertical current constructed wetland is built:
Vertical current constructed wetland cement pit width 2 meters, primary purifying pond length 5 meters, height 30cm, width 2 meters; Secondary stage purified pond length 5 meters, height 20cm, width 2 meters; Without the need to building 3 grades for the treatment of ponds.Constructed vertical current constructed wetland, without filling substrate, builds pure water training condition; Primary purifying pool water level 20cm; Secondary stage purified pool water level 10cm.Sewage through settling tank pre-treatment, enters primary purifying pond before entering primary purifying pond after precipitating soluble pollutent, sewage is received in primary purifying pond, and the water after from the purification of elementary pond is received in secondary stage purified pond.Secondary stage purified pond, lower than primary purifying pond horizontal plane 5cm, makes rising pipe and subordinate's treating pond water inlet pipe level, ensures that between pond and pond, water body flow is without the need to power.
(3) seedbed is made with vegetable fibre:
The seedbed that vegetable fibre makes, comprises nursery pocket, support and static line; Described nursery pocket width 5cm, height 5cm, Fibre diameter 0.1cm, nursery blanket net bore dia 0.5cm; Described support, both sides are the concrete reinforcement bar of diameter 5cm, are fixed on the outside of vertical-flow wetland, and upper end is the hawser of the diameter 5cm of vegetable fibre braiding, and two ends are fixed on steel bar column, middle unsettled on the water surface of vertical-flow wetland, for suspension nursery pocket; Described static line is woven by the vegetable fibre of diameter 5cm and forms, and is fixed on the steel bar column at two ends, is also fixed on the hawser of support on the hawser of support by nursery pocket.
(4) on seedbed, target plant is cultivated:
The cultivation of target plant is carried out in secondary stage purified pond.Due to agricultural area source sewage and sewage work discharge in water hazardous contaminant content relative less, the mainly nutritive substance such as nitrogen phosphorus.Therefore, the plant such as Plant choosing herbage, flowers seedbed cultivated.Before entering the Sheng phase of nourishing and growing, overall immigration in primary purifying pond is cultivated together with seedbed.As detected without agricultural chemicals and heavy metal and Organic pollutants, also vegetables can be cultivated in secondary stage purified pond; Otherwise, secondary stage purified link can be deleted.
(5) vertical current constructed wetland is put in seedbed together with plant:
Target plant after secondary stage purified pond is cultivated, is closely linked with seedbed, can move in primary purifying pond with seedbed entirety, utilize the quick growth of plant, pollutent in rapid absorption water body, reaches both purifying water bodies, produces again the object of large number of biological amount.
(6) seedbed is changed:
When the vegetation growth of plant phase in primary purifying pond terminates, growth velocity starts to decline, take out together with seedbed, for creating economic worth; Before plant in secondary stage purified pond reaches fast growing period, the elementary or secondary stage purified pond of overall immigration together with seedbed.
Claims (10)
1. an artificial swamp industrialization construction process, is characterized in that, comprises the following steps:
(1) plastic greenhouse is built;
(2) multistage pure water training vertical current constructed wetland is built;
(3) seedbed is made;
(4) on seedbed, target plant is cultivated;
(5) vertical current constructed wetland is put in seedbed and plant entirety;
(6) seedbed is changed after for some time.
2. artificial swamp industrialization construction process according to claim 1, it is characterized in that, described plastic greenhouse is made up of White plastic film and Steel bar rack, plastics film is detachable, booth specification is determined according to needing, temperature covers plastics film lower than when 20 DEG C, and temperature removes plastics film higher than when 20 DEG C.
3. artificial swamp industrialization construction process according to claim 1, is characterized in that, described multistage pure water training vertical current constructed wetland is the concrete floor of width 2 meters, and length is determined according to booth length; Constructed vertical current constructed wetland, without filling substrate, builds pure water training condition; Water level, between 20 ~ 50cm, is determined according to the size of target plant; Inhalent siphon is equal with the water surface, rising pipe is dried up end 5cm, prevents from being blocked by sedimentation drift.
4. artificial swamp industrialization construction process according to claim 1, is characterized in that, described multistage pure water training vertical current constructed wetland at least comprises two-step purification pond.
5. artificial swamp industrialization construction process according to claim 1, is characterized in that, described multistage pure water training vertical current constructed wetland is divided into 3 grades: primary purifying pond, secondary stage purified pond and final purification tank; Primary purifying pond is received through the pretreated sewage of settling tank, removes hazardous contaminant, enters secondary stage purified pond when hazardous contaminant clearance reaches Treated sewage reusing standard; Sub-basin, by the sorption of root system of plant, removes nutritive salt further, enters final purification tank when reaching more than water environment quality standard IV class water; The seedling cultivated in final purification tank continues to absorb water Middle nutrition material, purifies water further; Secondary and final purification tank, successively lower than primary purifying pond horizontal plane 20-50cm, makes rising pipe and subordinate's treating pond water inlet pipe level, and between guarantee pond and pond, water body flow is without the need to power; Described primary purifying pond, secondary stage purified pond and final purification tank can repeat to build according to water quality objective; When in the sewage that described primary purifying pond is received, total nitrogen concentration is higher than 1000mg/L, with final purification tank water outlet by dilution of sewage to below total nitrogen concentration 500mg/L, then to throw in into primary purifying pond.
6. artificial swamp industrialization construction process according to claim 1, it is characterized in that, described seedbed comprises nursery pocket, support and static line; Described nursery pocket width 10-20cm, height 5-20cm, woven by vegetable fibre and form, and Fibre diameter and nursery blanket net hole size are determined, diameter range 0.5-1cm, mesh diameter 1-2cm according to target plant size;
Described support both sides are the concrete reinforcement bar of diameter 5cm, are fixed on the outside of vertical-flow wetland, and upper end is the hawser of the diameter 5cm of vegetable fibre braiding, and two ends are fixed on steel bar column, middle unsettled on the water surface of vertical-flow wetland, for suspension nursery pocket;
Described static line is woven by the vegetable fibre of diameter 5cm and forms, and is fixed on the steel bar column at two ends, is also fixed on the hawser of support on the hawser of support by nursery pocket.
7. artificial swamp industrialization construction process according to claim 6, is characterized in that, the whole plants body of the target plant of described lignocellulosic fiber source in primary purifying pond or seedbed.
8. artificial swamp industrialization construction process according to claim 1, it is characterized in that, described target plant is: the plant in primary purifying pond includes but not limited to reed, cattail, Medulla Junci, conjunction are sprouted, nutgrass flatsedge, Chinese celery, Pink Reineckea Herb and sheep hoof; Secondary stage purified plants economic plants in pond, comprises herbage, artificial lawn, flowers and vegetables; Final purification tank for cultivating the plant seedlings in primary and secondary treating pond, before entering the Sheng phase of nourishing and growing, for substituting the plant in primary and secondary treating pond.
9. artificial swamp industrialization construction process according to claim 1, is characterized in that, in the Renewal process of described seedbed, and seedbed and plant bulk migration.
10. the artificial swamp that artificial swamp industrialization construction process builds according to any one of claim 1-9.
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