CN104556391A - Artificial wetland purification method for wastewater - Google Patents
Artificial wetland purification method for wastewater Download PDFInfo
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- CN104556391A CN104556391A CN201410844782.7A CN201410844782A CN104556391A CN 104556391 A CN104556391 A CN 104556391A CN 201410844782 A CN201410844782 A CN 201410844782A CN 104556391 A CN104556391 A CN 104556391A
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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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- 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
- C02F3/30—Aerobic and anaerobic processes
- C02F3/302—Nitrification and denitrification treatment
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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
- C02F3/30—Aerobic and anaerobic processes
- C02F3/308—Biological phosphorus removal
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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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- 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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Abstract
The invention discloses an artificial wetland purification method for wastewater. According to the triple combined action of physics, chemistry and biology in a natural wetland ecological system, the purification effect on sewage is realized, and the ecological treatment on the sewage is realized; compared with a traditional sewage treatment method, the artificial wetland purification method has the advantages of being good in treatment effect, high in nitrogen and phosphorus removal ability, convenient to operate, maintain and manage, low in engineering construction and operation cost, high in load change adaptability, less in energy consumption, free of chemical agent, and the like, meanwhile, can promote the development of agriculture and fisheries, and can also be used for public entertainment, wild animal and plant protection and scientific research.
Description
Technical field
The present invention relates to technical field of waste water processing, particularly relate to a kind of Constructed Wetland For Purifying method of waste water.
Background technology
Constructed wetland waste water treatment technology is a kind of ecological wastewater processing technology grown up the seventies and eighties in 20th century, it can process diversified waste water effectively, as sanitary sewage, trade effluent, percolate, surface runoff rainwater, combined system water drain stormwater overflow water etc.Add up according to investigations, have the wet land system of up to ten thousand Treating Municipal Sewage and various industrial sewage in steady running in Europe and North America, the number of sewage treating artificial wet land other area application in the world is also increasing sharply.
Artificial swamp is the simulation of people to natural wetland system, utilizes ecological method to remove pollutent, to reach the object of purifying waste water.
Summary of the invention
The object of the present invention is to provide a kind of Constructed Wetland For Purifying method of waste water, effectively realize waste water comprehensive treating process.
For effectively solving the problems of the technologies described above, the technical scheme that the present invention takes is as follows:
A Constructed Wetland For Purifying method for waste water, the method comprises the following steps:
(1) separation of suspended solid material and conversion, arrange current wetland, by current and large-scale contact surface and filler and root system of plant realize absorption and interception;
(2) organic removal and conversion, forms microbial film by the microorganism in soil, realizes organic substance decomposing, dissolving and conversion;
(3) removal of nitrogen and conversion, attached biological film on the medium-and-large-sized root system of plant of wetland, is completed by aerobic and anaerobic reaction by the removal of nitrogen;
(4) removal of phosphorus and conversion, arrange current wetland, by absorbing the removal that phosphorus realizes phosphorus in rotted plant material, polyP bacteria;
(5) removal of pathogenic bacteria and conversion, realizes pathogenic bacteria by the removal of solid suspension and hydraulic detention time and brings in wetland by the suspended substance in solid suspension water;
(6) removal of metal and conversion, in set wetland, the absorption of soil or filler heavy metal and reaction, be adsorbed with ion-exchange absorption and echo obligate absorption;
(removal of 7 sulfide and conversion, suffered wetland is realized by the decomposition of microorganism and the absorption of plant.
Especially, described step (1) is further comprising the steps of:
In described step (1), suspended solid material is the precipitation of flocculation and colloidal solid, in current wetland, the current of relative low speeds and large surface in contact make the removal efficiency in system relatively high, the matrix of a large amount of root system of plant and state of saturation, solid suspension is stopped by root system and filler retain, suspended substance is by the gravitational settling on the microbial film of gravel and face, root district, infiltration, adsorption and separated.
Especially, described step (2) is further comprising the steps of:
Described wetland soil has huge surface-area, and form one deck microbial film on soil particle surface, effluent stream is when particle surface, and insoluble organism is trapped very soon by sedimentation and filtration adsorption, is then utilized by tiny organism; Dissolved organic matter is removed by the metabolism of biomembranous absorption and microorganism.Plant transmits oxygen in soil, the dissolved oxygen in artificial swamp is made to be regional changes, present aerobic, anoxic and anaerobic zone continuously, thus survive in soil aerobic bacteria, anerobe and amphimicrobe, organic substance decomposing is carbonic acid gas and water by metabolism by aerobic bacteria; Organic substance decomposing is carbonic acid gas and methane by anaerobic bacterial fermentation.Most of organism in sewage is finally converted into microbe, carbonic acid gas, methane and water, inorganic nitrogen, inorganic phosphorus by heterotrophic microorganism.
Especially, described step (3) is further comprising the steps of:
Described step (3) wetland has aerobic, anaerobism, anoxic degraded district, be in the waterplant grown in the matrix of state of saturation, the ventilation property of Wetland Substrate can be increased, wetland plant can by air transmission to its root, make himself can under anaerobic grow, due to diffusion, air forms the aerobic zone of thin layer around each fibrous root of plant, oxidizing reaction can be there is in the aerobic zone that this is small, nitration reaction then completes under aerobic environment, NH3-N is mainly oxidized to NO3-N by it, anti-nitration reaction then completes under anaerobic environment, mainly NO3-N is reduced into N2.
Especially, described step (4) is further comprising the steps of:
The plant tissue rotted, the metal of the subsidiary medium in surface also can by the removal phosphorus of the mechanism short-terms such as precipitation, exchange, but the time can not be oversize, be no more than 1 year, and to particulate matter be depended on, the absorption of phosphorus is the same with the absorption of most nutritive substance, mainly in the vegetative period of plant, and summer and spring.
Especially, described step (5) is further comprising the steps of:
Reach removal object by the pathogenic bacteria of solid suspension band people by precipitation, interception etc., be distributed in the different location of wetland after pathogenic bacteria is separated, close to the water surface, by Atmospheric precipitation or UV ray institute dissipation.
Especially, described step (6) is further comprising the steps of:
Heavy metal ions in sewage concentration is general very low, precipitated metal can not be formed with inorganic anion in soil, it can with the organic complexing in soil, strengthen heavy metal to the affinity of soil, the removal of Soil Microorganism heavy metal also has suitable effect, by the outer complexing action of born of the same parents, the outer precipitating action of born of the same parents fixes heavy metal, also heavy metal can be converted into low toxicity state, what also have is converted into the stronger material of toxicity, the accumulation of plant heavy metal, heavy metal exists with various form, wherein deliquescent being absorbed by plants accumulates in plant, stem finally can be removed with the harvesting of plant with upper part from wetland, insolublely can be retained by the filteration of medium, underground part the high reactivity root district network system formed and the litter of soaking of large stretch of intensive plant and their prosperities, the effluent flow rate entering wetland is slowed down, be conducive to the sedimentation of suspended particle in sewage like this, and be adsorbed in the removal of heavy metal in water.
Especially, described step (7) is further comprising the steps of:
Organic sulfide is broken down into hydrogen sulfide through mineralization, partial vulcanization hydrogen volatilization effusion wetland, and part then forms sulphur, sulfuric acid by the sulfuration of sulphur bacteria and sulfide-oxidizing enzyme, and the various ionic bond in they and soil form inorganic sulphide.Inorganic sulphide part can be absorbed and used by plants, and also some can form hydrogen sulfide through desulfurication under the effect of anti-sulfuration bacteria, and hydrogen sulfide is overflowed wetland or participate in sulfuration again again.
Beneficial effect of the present invention is:
The Constructed Wetland For Purifying method of waste water provided by the invention, according to physics in the natural wetland ecosystem, chemistry, biological triple actings in conjunction realize the cleaning action to sewage, realize the ecology process to sewage, artificial swamp is compared with traditional sewage water treatment method, there is treatment effect good, nitrogen phosphorus ligands ability is strong, during-operation service convenient management, engineering capital construction and running expense low, and it is adaptable to load variations, less energy consumption, need not the advantage such as chemical agent, it can promote agricultural simultaneously, the development of fishery, public entertainment can be supplied again, wild fauna and flora protection and scientific research use.
Below in conjunction with accompanying drawing, the present invention is described in detail.
Accompanying drawing explanation
Fig. 1 is the Constructed Wetland For Purifying method schematic diagram of waste water of the present invention.
Embodiment
Embodiment 1:
As shown in Figure 1, the Constructed Wetland For Purifying method of waste water disclosed in the present embodiment, is specifically implemented as follows:
(1) separation of suspended solid material and conversion, arrange current wetland, by current and large-scale contact surface and filler and root system of plant realize absorption and interception; Suspended solid material is the precipitation of flocculation and colloidal solid, in current wetland, the current of relative low speeds and large surface in contact make the removal efficiency in system relatively high, the matrix of a large amount of root system of plant and state of saturation, solid suspension is stopped by root system and filler retain, suspended substance is by the gravitational settling on the microbial film of gravel and face, root district, infiltration, adsorption and separated.
(2) organic removal and conversion, forms microbial film by the microorganism in soil, realizes organic substance decomposing, dissolving and conversion; Described wetland soil has huge surface-area, and form one deck microbial film on soil particle surface, effluent stream is when particle surface, and insoluble organism is trapped very soon by sedimentation and filtration adsorption, is then utilized by tiny organism; Dissolved organic matter is removed by the metabolism of biomembranous absorption and microorganism.Plant transmits oxygen in soil, the dissolved oxygen in artificial swamp is made to be regional changes, present aerobic, anoxic and anaerobic zone continuously, thus survive in soil aerobic bacteria, anerobe and amphimicrobe, organic substance decomposing is carbonic acid gas and water by metabolism by aerobic bacteria; Organic substance decomposing is carbonic acid gas and methane by anaerobic bacterial fermentation.Most of organism in sewage is finally converted into microbe, carbonic acid gas, methane and water, inorganic nitrogen, inorganic phosphorus by heterotrophic microorganism.
(3) removal of nitrogen and conversion, attached biological film on the medium-and-large-sized root system of plant of wetland, is completed by aerobic and anaerobic reaction by the removal of nitrogen, wetland has aerobic, anaerobism, anoxic degraded district, be in the waterplant grown in the matrix of state of saturation, the ventilation property of Wetland Substrate can be increased, wetland plant can by air transmission to its root, make himself can under anaerobic grow, due to diffusion, air forms the aerobic zone of thin layer around each fibrous root of plant, oxidizing reaction can be there is in the aerobic zone that this is small, nitration reaction then completes under aerobic environment, NH3-N is mainly oxidized to NO3-N by it, anti-nitration reaction then completes under anaerobic environment, mainly NO3-N is reduced into N2.
(4) removal of phosphorus and conversion, arrange current wetland, by absorbing the removal that phosphorus realizes phosphorus in rotted plant material, polyP bacteria; The plant tissue rotted, the metal of the subsidiary medium in surface also can by the removal phosphorus of the mechanism short-terms such as precipitation, exchange, but the time can not be oversize, be no more than 1 year, and to particulate matter be depended on, the absorption of phosphorus is the same with the absorption of most nutritive substance, mainly in vegetative period of plant in summer and spring.
(5) removal of pathogenic bacteria and conversion, realizes pathogenic bacteria by the removal of solid suspension and hydraulic detention time and brings in wetland by the suspended substance in solid suspension water; Reach removal object by the pathogenic bacteria of solid suspension band people by precipitation, interception etc., be distributed in the different location of wetland after pathogenic bacteria is separated, close to the water surface, by Atmospheric precipitation or UV ray institute dissipation.
(6) removal of metal and conversion, in set wetland, the absorption of soil or filler heavy metal and reaction, be adsorbed with ion-exchange absorption and echo obligate absorption, heavy metal ions in sewage concentration is general very low, precipitated metal can not be formed with inorganic anion in soil, it can with the organic complexing in soil, strengthen heavy metal to the affinity of soil, the removal of Soil Microorganism heavy metal also has suitable effect, by the outer complexing action of born of the same parents, the outer precipitating action of born of the same parents fixes heavy metal, also heavy metal can be converted into low toxicity state, what also have is converted into the stronger material of toxicity, the accumulation of plant heavy metal, heavy metal exists with various form, wherein deliquescent being absorbed by plants accumulates in plant, stem finally can be removed with the harvesting of plant with upper part from wetland, insolublely can be retained by the filteration of medium, underground part the high reactivity root district network system formed and the litter of soaking of large stretch of intensive plant and their prosperities, the effluent flow rate entering wetland is slowed down, be conducive to the sedimentation of suspended particle in sewage like this, and be adsorbed in the removal of heavy metal in water.
(7) removal of sulfide and conversion, suffered wetland is realized by the decomposition of microorganism and the absorption of plant.Organic sulfide is broken down into hydrogen sulfide through mineralization, partial vulcanization hydrogen volatilization effusion wetland, and part then forms sulphur, sulfuric acid by the sulfuration of sulphur bacteria and sulfide-oxidizing enzyme, and the various ionic bond in they and soil form inorganic sulphide.Inorganic sulphide part can be absorbed and used by plants, and also some can form hydrogen sulfide through desulfurication under the effect of anti-sulfuration bacteria, and hydrogen sulfide is overflowed wetland or participate in sulfuration again again.
Applicant states, person of ordinary skill in the field is on the basis of above-described embodiment, by above-described embodiment step, combined with the technical scheme of summary of the invention part, thus the new method produced, also be one of record scope of the present invention, the application, for making specification sheets simple and clear, no longer enumerates other embodiment of these steps.
Embodiment 2:
Described artificial swamp is made up of several basal component such as filler, plant, microorganism, algae.The physics of---microorganism---plant complex ecosystem that utilizes matrix, chemistry and biological triple coordinative roles, realize the high-efficient purification to waste water by filtration, absorption, precipitation, ion-exchange, plant absorption and microbial decomposition.Meanwhile, by the biogeochemical cycle of nutritive substance and moisture, promote that green plants grows and makes it increase production, realize the resource utilization of waste water and innoxious.This artificial wet land system is in certain length and width when acclive depression, bottom surface, and mixed by soil and filler (as cobble etc.) and form bed of packings, sewage can flow circuitously in the filler gap of bed body, or flows in bed surface.At the surface grafting of bed body, there is the waterplant (as reed, Herba Eichhorniae etc.) that handling property is good, surviving rate is high, form a unique animals and plants ecotope, sewage is processed.Artificial swamp can promote circulation and the regeneration of sewage, makes contained pollution substance in sewage recycle with the form of crop production or directly remove.In sewage, most of organism is as the organic nutrient of heterotrophic microorganism, is finally converted into microbe and CO2, H2O.Insoluble organism in sewage, by precipitation, the filteration of wetland, can be trapped soon and then be utilized by microorganism; The dissolved organic matter then removal that is decomposed by the biomembranous absorption of root system of plant, absorption and biological metabolism degradation process in sewage.Along with constantly carrying out for the treatment of processes, the also flourish of the microorganism in wetland bed, is removed the organism of new life by the periodic replacement to wetland bed filler and the harvesting to wetland plant from system.The Basic Mechanism that suspended solid material is removed in wetland is the precipitation of flocculation and colloidal solid, in current wetland, the current of relative low speeds and large surface in contact make the removal efficiency in system relatively high, the matrix of a large amount of root system of plant and state of saturation, makes solid suspension be stopped by root system and filler and retains.Subsurface flow wetland system, as a level or vertical gravity filter, therefore, makes suspended substance pass through the gravitational settling (free sedimentation and flocculation) on the microbial film in gravel and face, root district, infiltration, adsorption and separated.Wetland mainly leans on the effect of microorganism to organic removal.Soil has huge specific surface area, and form one deck microbial film on soil particle surface, effluent stream is when particle surface, and insoluble organism is trapped very soon by sedimentation and filtration adsorption, is then utilized by tiny organism; Dissolved organic matter is removed by the metabolism of biomembranous absorption and microorganism.Plant transmits oxygen in soil, makes the dissolved oxygen in artificial swamp be regional changes, presents aerobic, anoxic and anaerobic zone continuously.Thus to survive in soil aerobic bacteria, anerobe and amphimicrobe.Organic substance decomposing is carbonic acid gas and water by metabolism by aerobic bacteria; Organic substance decomposing is carbonic acid gas and methane by anaerobic bacterial fermentation.Most of organism in sewage is finally converted into microbe, carbonic acid gas, methane and water, inorganic nitrogen, inorganic phosphorus by heterotrophic microorganism.The removal of nitrogen is completed by aerobic and anaerobic reaction.Attached biological film on the medium-and-large-sized root system of plant of wetland.There is aerobic, anaerobism, anoxic degraded district.Be in the waterplant grown in the matrix of state of saturation, the ventilation property of Wetland Substrate can be increased, wetland plant can by air transmission to its root, make himself can under anaerobic grow, due to diffusion (or leakage) effect, these air form the aerobic zone of thin layer around each fibrous root of plant, oxidizing reaction can occur in the aerobic zone that this is small.Nitration reaction then completes under aerobic environment, and NH3-N is mainly oxidized to NO3-N by it, and anti-nitration reaction then completes under anaerobic environment, mainly NO3-N is reduced into N2.Removal due to nitrogen depends on the absorption of plant, thus the withered of plant and decline phase removal efficiency lower, annual wetland to the absorption of nitrogen greatly about 12 ~ 120gN/m3a.In denitrification process, carbon source is the important factor affecting its effect.In current wetland, the organic carbon of plant supply denitrogenation will be determined according to the form of N in the ratio of COD and N in sewage and system water inlet.Find from the research processing nitrated secondary water outlet, when covering the increase such as weeds, wetland plant biomass, the clearance of nitrogen has brought up to 80% from 30%.In current wetland, mainly from rotted plant material, polyP bacteria, phosphorus is absorbed to the removal of phosphorus.In addition, some plant tissues rotted, the metal of the subsidiary medium in surface also can pass through the removal phosphorus of the mechanism short-terms such as precipitation, exchange, but the time can not be oversize, is no more than 1 year, and will depend on particulate matter.The absorption of phosphorus is the same with the absorption of most nutritive substance, mainly in the vegetative period of plant, and summer and spring.Every year 1.8 ~ 18gP/m2 is about to the removal amount of phosphorus in wetland.Pathogenic bacteria is brought in wetland by the suspended substance in solid suspension water.Its removal is relevant with hydraulic detention time with the removal of solid suspension.The same with the cutting mechanisms of solid suspension by the pathogenic bacteria of solid suspension band people, reach removal object by precipitation, interception etc.Be distributed in the different location of wetland after pathogenic bacteria is separated, but all must compete with organized community around them and survive.Generally their survival rate is very low.If close to the water surface, be easy to by Atmospheric precipitation or UV ray institute dissipation.The removal of wetland heavy metal is the absorption of soil or filler heavy metal and reaction mainly, is adsorbed with ion-exchange absorption and echos obligate absorption.Heavy metal ions in sewage concentration is general very low, can not form precipitated metal with inorganic anion in soil, and it with the organic complexing in soil, can strengthen heavy metal to the affinity of soil.The removal of Soil Microorganism heavy metal also has suitable effect, and they fix heavy metal by the outer complexing action of born of the same parents, the outer precipitating action of born of the same parents, and also heavy metal can be converted into low toxicity state, what also have is converted into the stronger material of toxicity.Also have the accumulation of plant heavy metal in addition, heavy metal exists with various form, and wherein deliquescent being absorbed by plants accumulates in plant, and stem finally can be removed with the harvesting of plant with upper part from wetland, insolublely can be retained by the filteration of medium.The high reactivity root district network system also having the underground part of large stretch of intensive plant and their prosperities to be formed and immersion litter, make the effluent flow rate entering wetland slow down, be conducive to the sedimentation of suspended particle in sewage like this, and be adsorbed in the removal of heavy metal in water.Artificial swamp is to the removal of the sulphur mainly decomposition of microorganism and the absorption of plant.Organic sulfide is broken down into hydrogen sulfide through mineralization, partial vulcanization hydrogen volatilization effusion wetland, and part then forms sulphur, sulfuric acid by the sulfuration of sulphur bacteria and sulfide-oxidizing enzyme, and the various ionic bond in they and soil form inorganic sulphide.Inorganic sulphide part can be absorbed and used by plants, and also some can form hydrogen sulfide through desulfurication under the effect of anti-sulfuration bacteria, and hydrogen sulfide is overflowed wetland or participate in sulfuration again again.
The technological line being different from prior art in the present embodiment is:
The cleaning action to sewage is realized according to triple actings in conjunction of physics, chemistry, biology in the natural wetland ecosystem; realize the ecology process to sewage; artificial swamp is compared with traditional sewage water treatment method; have that treatment effect is good, nitrogen phosphorus ligands ability be strong, during-operation service convenient management, engineering capital construction and running expense low; and, less energy consumption adaptable to load variations, need not the advantage such as chemical agent; it can promote the development of agricultural, fishery simultaneously, again can for public entertainment, wild fauna and flora protection and scientific research.
The another statement of applicant, the present invention illustrates implementation method of the present invention and apparatus structure by above-described embodiment, but the present invention is not limited to above-mentioned embodiment, does not namely mean that the present invention must rely on aforesaid method and structure could be implemented.Person of ordinary skill in the field should understand, any improvement in the present invention, replaces and the interpolation of step, concrete way choice etc., all drop within protection scope of the present invention and open scope implementation method equivalence selected by the present invention.
The present invention is not limited to above-mentioned embodiment, and all employings and analog structure of the present invention and method thereof realize all embodiments of the object of the invention all within scope.
Claims (8)
1. a Constructed Wetland For Purifying method for waste water, it is characterized in that, the method comprises the following steps:
(1) separation of suspended solid material and conversion, arrange current wetland, by current and large-scale contact surface and filler and root system of plant realize absorption and interception;
(2) organic removal and conversion, forms microbial film by the microorganism in soil, realizes organic substance decomposing, dissolving and conversion;
(3) removal of nitrogen and conversion, attached biological film on the medium-and-large-sized root system of plant of wetland, is completed by aerobic and anaerobic reaction by the removal of nitrogen;
(4) removal of phosphorus and conversion, arrange current wetland, by absorbing the removal that phosphorus realizes phosphorus in rotted plant material, polyP bacteria;
(5) removal of pathogenic bacteria and conversion, realizes pathogenic bacteria by the removal of solid suspension and hydraulic detention time and brings in wetland by the suspended substance in solid suspension water;
(6) removal of metal and conversion, in set wetland, the absorption of soil or filler heavy metal and reaction, be adsorbed with ion-exchange absorption and echo obligate absorption;
(7) removal of sulfide and conversion, suffered wetland is realized by the decomposition of microorganism and the absorption of plant.
2. the Constructed Wetland For Purifying method of waste water according to claim 1, is characterized in that, described step (1) is further comprising the steps of:
In described step (1), suspended solid material is the precipitation of flocculation and colloidal solid, in current wetland, the current of relative low speeds and large surface in contact make the removal efficiency in system relatively high, the matrix of a large amount of root system of plant and state of saturation, solid suspension is stopped by root system and filler retain, suspended substance is by the gravitational settling on the microbial film of gravel and face, root district, infiltration, adsorption and separated.
3. the Constructed Wetland For Purifying method of waste water according to claim 1, is characterized in that, described step (2) is further comprising the steps of:
Described wetland soil has huge surface-area, and form one deck microbial film on soil particle surface, effluent stream is when particle surface, and insoluble organism is trapped very soon by sedimentation and filtration adsorption, is then utilized by tiny organism; Dissolved organic matter is removed by the metabolism of biomembranous absorption and microorganism;
Plant transmits oxygen in soil, the dissolved oxygen in artificial swamp is made to be regional changes, present aerobic, anoxic and anaerobic zone continuously, thus survive in soil aerobic bacteria, anerobe and amphimicrobe, organic substance decomposing is carbonic acid gas and water by metabolism by aerobic bacteria; Organic substance decomposing is carbonic acid gas and methane by anaerobic bacterial fermentation,
Most of organism in sewage is finally converted into microbe, carbonic acid gas, methane and water, inorganic nitrogen, inorganic phosphorus by heterotrophic microorganism.
4. the Constructed Wetland For Purifying method of waste water according to claim 1, is characterized in that, described step (3) is further comprising the steps of:
Described step (3) wetland has aerobic, anaerobism, anoxic degraded district, be in the waterplant grown in the matrix of state of saturation, the ventilation property of Wetland Substrate can be increased, wetland plant can by air transmission to its root, make himself can under anaerobic grow, due to diffusion, air forms the aerobic zone of thin layer around each fibrous root of plant, oxidizing reaction can be there is in the aerobic zone that this is small, nitration reaction then completes under aerobic environment, NH3-N is mainly oxidized to NO3-N by it, anti-nitration reaction then completes under anaerobic environment, mainly NO3-N is reduced into N2.
5. the Constructed Wetland For Purifying method of waste water according to claim 1, is characterized in that, described step (4) is further comprising the steps of:
The plant tissue rotted, the metal of the subsidiary medium in surface also can by the removal phosphorus of the mechanism short-terms such as precipitation, exchange, but the time can not be oversize, be no more than 1 year, and to particulate matter be depended on, the absorption of phosphorus is the same with the absorption of most nutritive substance, mainly in the vegetative period of plant, and summer and spring.
6. the Constructed Wetland For Purifying method of waste water according to claim 1, is characterized in that, described step (5) is further comprising the steps of:
Reach removal object by the pathogenic bacteria of solid suspension band people by precipitation, interception etc., be distributed in the different location of wetland after pathogenic bacteria is separated, close to the water surface, by Atmospheric precipitation or UV ray institute dissipation.
7. the Constructed Wetland For Purifying method of waste water according to claim 1, is characterized in that, described step (6) is further comprising the steps of:
Heavy metal ions in sewage concentration is general very low, precipitated metal can not be formed with inorganic anion in soil, it can with the organic complexing in soil, strengthen heavy metal to the affinity of soil, the removal of Soil Microorganism heavy metal also has suitable effect, by the outer complexing action of born of the same parents, the outer precipitating action of born of the same parents fixes heavy metal, also heavy metal can be converted into low toxicity state, what also have is converted into the stronger material of toxicity, the accumulation of plant heavy metal, heavy metal exists with various form, wherein deliquescent being absorbed by plants accumulates in plant, stem finally can be removed with the harvesting of plant with upper part from wetland, insolublely can be retained by the filteration of medium, underground part the high reactivity root district network system formed and the litter of soaking of large stretch of intensive plant and their prosperities, the effluent flow rate entering wetland is slowed down, be conducive to the sedimentation of suspended particle in sewage like this, and be adsorbed in the removal of heavy metal in water.
8. the Constructed Wetland For Purifying method of waste water according to claim 1, is characterized in that, described step (7) is further comprising the steps of:
Organic sulfide is broken down into hydrogen sulfide through mineralization, partial vulcanization hydrogen volatilization effusion wetland, and part then forms sulphur, sulfuric acid by the sulfuration of sulphur bacteria and sulfide-oxidizing enzyme, and the various ionic bond in they and soil form inorganic sulphide,
inorganic sulphide part can be absorbed and used by plants, and also some can form hydrogen sulfide through desulfurication under the effect of anti-sulfuration bacteria, and hydrogen sulfide is overflowed wetland or participate in sulfuration again again.
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| CN201410844782.7A CN104556391A (en) | 2014-12-31 | 2014-12-31 | Artificial wetland purification method for wastewater |
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| CN201410844782.7A CN104556391A (en) | 2014-12-31 | 2014-12-31 | Artificial wetland purification method for wastewater |
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| CN105541042A (en) * | 2016-01-27 | 2016-05-04 | 山东理工大学 | Industrial wastewater treatment method |
| CN107601789A (en) * | 2017-11-06 | 2018-01-19 | 成都信息工程大学 | A kind of integrated form integral life sewage processing method |
| WO2018107938A1 (en) * | 2016-12-12 | 2018-06-21 | 袁志贤 | Artificial wetland resource recovery and utilization system |
| CN108658235A (en) * | 2017-12-11 | 2018-10-16 | 北京林业大学 | Drowned flow artificial wet land, its construction method and the sewage water denitrification handling method of sewage water denitrification processing |
| CN110028159A (en) * | 2018-01-11 | 2019-07-19 | 北京林业大学 | Construct method, artificial swamp and the strengthened denitrification method of strengthened denitrification artificial swamp |
| CN110133226A (en) * | 2019-05-28 | 2019-08-16 | 河海大学 | A kind of the phosphorus pollution level judgment method and experimental provision of middle and small river beach |
| CN111392876A (en) * | 2020-03-25 | 2020-07-10 | 北京邦源环保科技股份有限公司 | Biological purifying agent for sewage treatment |
| CN114590905A (en) * | 2022-04-27 | 2022-06-07 | 淮北师范大学 | Integrated constructed wetland wastewater treatment system |
| CN116161830A (en) * | 2023-04-14 | 2023-05-26 | 中国科学院生态环境研究中心 | Multi-level sewage treatment system combined with constructed wetland |
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| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104925950A (en) * | 2015-05-19 | 2015-09-23 | 魏胜志 | Interception pollution control method |
| CN105541042A (en) * | 2016-01-27 | 2016-05-04 | 山东理工大学 | Industrial wastewater treatment method |
| WO2018107938A1 (en) * | 2016-12-12 | 2018-06-21 | 袁志贤 | Artificial wetland resource recovery and utilization system |
| CN107601789A (en) * | 2017-11-06 | 2018-01-19 | 成都信息工程大学 | A kind of integrated form integral life sewage processing method |
| CN108658235A (en) * | 2017-12-11 | 2018-10-16 | 北京林业大学 | Drowned flow artificial wet land, its construction method and the sewage water denitrification handling method of sewage water denitrification processing |
| CN110028159A (en) * | 2018-01-11 | 2019-07-19 | 北京林业大学 | Construct method, artificial swamp and the strengthened denitrification method of strengthened denitrification artificial swamp |
| CN110133226A (en) * | 2019-05-28 | 2019-08-16 | 河海大学 | A kind of the phosphorus pollution level judgment method and experimental provision of middle and small river beach |
| CN111392876A (en) * | 2020-03-25 | 2020-07-10 | 北京邦源环保科技股份有限公司 | Biological purifying agent for sewage treatment |
| CN114590905A (en) * | 2022-04-27 | 2022-06-07 | 淮北师范大学 | Integrated constructed wetland wastewater treatment system |
| CN116161830A (en) * | 2023-04-14 | 2023-05-26 | 中国科学院生态环境研究中心 | Multi-level sewage treatment system combined with constructed wetland |
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