CN103253823A - Method and system for realizing efficient wastewater treatment and waste methane gas oxidation together via artificial wetland - Google Patents

Method and system for realizing efficient wastewater treatment and waste methane gas oxidation together via artificial wetland Download PDF

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Publication number
CN103253823A
CN103253823A CN2013101585126A CN201310158512A CN103253823A CN 103253823 A CN103253823 A CN 103253823A CN 2013101585126 A CN2013101585126 A CN 2013101585126A CN 201310158512 A CN201310158512 A CN 201310158512A CN 103253823 A CN103253823 A CN 103253823A
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wetland
water
artificial wetland
low
concentration
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CN103253823B (en
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吴树彪
吕涛
董仁杰
刘芳
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China Agricultural University
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China Agricultural University
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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
    • Y02A50/00—TECHNOLOGIES FOR ADAPTATION TO CLIMATE CHANGE in human health protection, e.g. against extreme weather
    • Y02A50/20—Air quality improvement or preservation, e.g. vehicle emission control or emission reduction by using catalytic converters
    • 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
    • Y02C—CAPTURE, STORAGE, SEQUESTRATION OR DISPOSAL OF GREENHOUSE GASES [GHG]
    • Y02C20/00—Capture or disposal of greenhouse gases
    • Y02C20/20—Capture or disposal of greenhouse gases of methane

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Abstract

The invention belongs to the field of environmental protection, and relates to a method and a system for realizing efficient wastewater treatment and waste methane gas oxidation together via an artificial wetland, wherein a vertical flow artificial wetland with a good oxygen environment is selected by the system. The system comprises a water distribution matrix layer (5) and an artificial wetland aeration reaction bed (7), wherein a water distributor (4) connected with a sewage inlet pipe (1) is arranged in the water distribution matrix layer (5); wetland plants (3) are planted in the water distribution matrix layer (5); a water distribution room (9) with uniformly-distributed aeration heads (4) and an artificial wetland water collecting pipe (12) are arranged at the bottom of the artificial wetland aeration reaction bed (7); the water distribution room (9) is connected with a low-concentration methane gas inlet pipe (2); and an artificial wetland water outlet pipe (10) with a water sealing device (11) is arranged at the outlet of the artificial wetland water collecting pipe (12). In order to solve the problems that the demand of ecological treatment oxygen for a large amount of high-concentration wastewater in a livestock and poultry farm cannot be satisfied easily while the waste gas containing low-concentration methane is discharged at random to generate the greenhouse effect, the wastewater treatment and the waste gas treatment of the livestock and poultry farm are efficiently coupled, thereby providing the efficient and low-consumption method and system for realizing the efficient wastewater treatment and the waste methane gas oxidation together via the artificial wetland.

Description

The method and system of the collaborative methane waste product oxidation of artificial wetland high-efficiency sewage disposal
Technical field
The invention belongs to field of environment protection, be specifically related to the method and system of the collaborative methane waste product oxidation of artificial wetland high-efficiency sewage disposal.
Background technology
Along with developing rapidly of China's livestock and poultry breeding industry; greatly; medium-sized livestock and poultry farm has produced a large amount of high density (organism; ammonia nitrogen) swine manure wastewater; in addition; pathogenic microorganism in the water causes existing extensive outbreak of disease and popular potentially dangerous; it arbitrarily discharges also can produce serious pollution to surface water body and underground water; and if undressed fecal sewage is directly applied the field; the pollutent of the high density in the ight soil and unwanted bacteria can have a strong impact on plant growth; therefore a large amount of high-concentration sewage of livestock and poultry farm is handled the back discharging or is used for the farmland reuse; to the protection environment, promote that the water resources utilization is very important.
In addition; large and medium-sized livestock and poultry farm is indoor because of the livestock and poultry daily routines; can produce the methane gas of big volume low-concentration by metabolism and manure fermentation, if only adopt ventilation installation with this gaseous emission in atmosphere, cause very big pressure can for the reduction of greenhouse gas discharge in the whole world.It is reported that the agricultural sources greenhouse gas emission accounts for the 10-12% of global greenhouse gas emission, wherein the contribution rate of livestock and poultry cultivation is about 37%, and in discharge of methane, there is about 3-6 ten thousand m every year in China 3Methane leak in the atmosphere with the form of low-concentration methane.At present increasing large and medium-sized livestock and poultry farm adopts biogas engineering to handle the livestock and poultry cultivation field waste, but 10% the methane gas of also can having an appointment in its process leaks in the atmosphere with the form of low-concentration methane.China has promised to undertake at the year two thousand twenty and has compared per GDP reduction of greenhouse gas discharge 40-45% with 2005, so the Research Significance of emission-reduction technology is great, reduces the low-concentration methane discharging and can effectively serve national strategy demand.Domestic research about the low-concentration methane emission-reduction technology is less.Abroad for high density methane (1600mg/m 3) processing adopt regeneration thermal source oxidation style (RTO) more, but this method drops into energy when handling low-concentration methane gas bigger, and increases extra CO 2Discharging.Therefore, for the methane emission reduction of lower concentration, development and Design purification techniques simple and easy to do and efficient economy is most important.
Constructed wetland waste water treatment technology is a kind of ecological sewage purification technology that grows up the seventies in 20th century, and characteristics such as, good purification low with its less investment, construction operation cost have been subjected to extensive concern in recent years.The purification of sewage in artificial wet land system mainly finished by physics, chemistry and biological action are collaborative with matrix, plant and microorganism.Than traditional horizontal drowned flow artificial wet land, though vertical current constructed wetland has reoxygenation effect preferably, and water flow mode can make sewage have more fully with wetland matrix and wetland plant root system and contact, can take full advantage of in the wetland microbial process to pollutent, particularly organism and ammonia nitrogen carry out aerobic degradation, but pollutant loads such as organism, ammonia nitrogen are very high in the livestock and poultry farm waste water, have the oxygen demand that the vertical current constructed wetland of oxygen environment preferably generally also can't fully satisfy the pollutent aerobic degradation.It is low because of running cost that traditional biomembrance process processing contains low-concentration methane waste gas, advantages such as non-secondary pollution and obtain extensive concern, when water continues to flow through the attached biological film surface, can form one deck liquid film at biofilm surface, and this liquid film will become microorganism provide the life and the exchange of substance place, methane in the waste gas can at first dissolve in liquid film, absorbed by microorganism again, or directly be adsorbed, oxygenolysis by microorganism is degraded then, methane in the waste gas can obtain purification progressively in the process of air current flow, but the waste gas major part after purifying is directly discharged, and has caused energy dissipation to a certain degree.
Summary of the invention
The method of the collaborative methane waste product oxidation of artificial wetland high-efficiency sewage disposal adopts the vertical current constructed wetland of water inlet continuously, and the buoyancy that utilizes water body self gravitation and gas handles livestock and poultry farm waste water simultaneously in the constructed wetland bed body and lower concentration overflows methane gas, and the residual gas after the low-concentration methane gas processing can carry out aeration to wetland, take full advantage of gas kinetic energy, thereby further improve the well-oxygenated environment of wetland bed body, improve in the wetland of flowing through the aerobic degradation of pollutent in the sewage and waste gas.
The service system of realizing the collaborative methane waste product oxidation of artificial wetland high-efficiency sewage disposal of aforesaid method comprises sewage water inlet pipe 1, low-concentration methane inlet pipe 2, wetland plant 3, water distributor 4, water distribution hypothallus 5, water inlet current 6, artificial swamp aerated reaction bed 7, charge air flow 8, cloth air chamber 9, artificial wetland effluent pipe 10, water seal arrangement 11, artificial swamp header 12 goes out entraining air stream 13, uniform aeration head 14 etc.Flow into sewage water inlet pipe 1 after the pre-treatment such as the filtration of livestock and poultry farm sewage process, precipitation, enter water distribution hypothallus 5 by water distributor 4, water distributor 4 is for having the perforated tube of many branching pipes, select for use the less matrix such as fine sand of particle diameter as filler in the water distribution hypothallus 5, direction along water inlet current 6 after sewage is evenly distributed in water distribution hypothallus 5 flows from top to bottom, guarantee in sewage and the artificial swamp aerated reaction bed 7 wetland matrix, wetland plant 3 root systems and adhere to its surperficial microorganism fully to contact, make the pollutent efficient degradation.The low-concentration methane gas that produces in the livestock and poultry farm enters cloth air chamber 9 in the wetland bed body by low-concentration methane inlet pipe 2, cloth air chamber 9 arranges many arms, and the uniform aeration head 14 of the even perforate that makes progress is set on the arm, make gas stable along the direction of charge air flow 8 flowing from the bottom up, low-concentration methane in the gas in wetland bed body internal flow process with after the microorganism of wetland matrix and root system of plant surface attachment fully contacts, earlier change liquid phase over to from gas phase, be dissolved in the liquid film on microorganism surface, in liquid phase, absorbed by the wetland related microorganism again, absorption, by the metabolism removal that is degraded, simultaneously, air-flow also can have the effect of an aeration to wetland bed body in artificial swamp aerated reaction bed 7 flow process, form artificial swamp aerated reaction bed 7, and then can improve the well-oxygenated environment of wetland bed body greatly, promote the aerobic removal of pollutent in the livestock and poultry farm high-concentration waste water, final remaining innocuous gas forms entraining air stream 13.Wetland effluent pipe 10 arranges one section water seal arrangement 11, water seal arrangement 11 is one section U-shaped pipe, inner can form one section permanent flooding area, form fluid-tight voluntarily, stop gas in the cloth air chamber 9 without artificial swamp aerated reaction bed 7 directly by 10 mouthfuls of discharges of rising pipe.Compared with prior art,
Beneficial effect of the present invention is:
(1) among the present invention, system handles high density livestock and poultry farm sewage coupling lower concentration with artificial swamp and overflows the methane processing.Utilize the wetland microbial process to handle low-concentration methane, and utilize and contain low-concentration methane waste gas artificial swamp is carried out aeration, improve the well-oxygenated environment of wetland bed body, and then promote wet land system to the removal of pollutent in the high density livestock and poultry farm sewage.
(2) among the present invention, adopt even water distributor 4 and water distribution hypothallus 5, the livestock and poultry farm waste water that makes high density from the wetland top uniformly from top to bottom enter artificial swamp, make waste water with wetland matrix, wetland plant 3 root systems and adhere to its surperficial microorganism and fully contact, artificial swamp aerated reaction bed 7 bottoms arrange aerating apparatus, wetland bed body is carried out aeration, be conducive to the efficient degradation of pollutent.
(3) among the present invention, wetland bed body arranges low-concentration methane gas air inlet cloth air chamber 9 and supporting uniform aeration head 14, can make the stable back of gas along direction upwards diffusion gradually in wetland inside of charge air flow 8, low concentration methane is removed by the wetland microbiological oxidation in wetland bed body internal flow process.
(4) among the present invention, artificial wetland effluent pipe 10 arranges water seal arrangement 11, can prevent methane waste product in the cloth air chamber 9 without oxidation removal in the artificial swamp aerated reaction bed 7, and directly by 10 mouthfuls of discharges of rising pipe.
Description of drawings:
Fig. 1 is the synoptic diagram of this artificial swamp coupling low-concentration methane and Sewage treatment systems, and Fig. 2 is the diagrammatic cross-section of cloth air chamber 9.
Reference numeral:
1: sewage water inlet pipe; 2: the low-concentration methane inlet pipe;
3: wetland plant; 4: water distributor;
5: the water distribution hypothallus; 6: the water inlet current;
7: artificial swamp aerated reaction bed; 8: charge air flow;
9: the cloth air chamber; 10: the artificial wetland effluent pipe;
11: water seal arrangement; 12: the artificial swamp header;
13: go out entraining air stream; 14: the uniform aeration head.
Embodiment:
Below in conjunction with accompanying drawing and mark, further describe the present invention.
After waiting pre-treatment, livestock and poultry farm sewage process precipitation flows into sewage water inlet pipe 1, enter wetland bed body by water distributor 4, direction along water inlet current 6 after sewage is evenly distributed in water distribution hypothallus 5 flows from top to bottom, guarantee in sewage and the artificial swamp aerated reaction bed 7 wetland matrix, wetland plant 3 root systems and be attached to its surperficial microorganism fully to contact, make the pollutent efficient degradation.The low-concentration methane gas that produces in the livestock and poultry farm enters cloth air chamber 9 in the wetland bed body by low-concentration methane inlet pipe 2, make the stable back of gas by uniform aeration head 14, along the direction of charge air flow 8 flowing from the bottom up, low-concentration methane in the gas in wetland bed body internal flow process with after wetland matrix and sewage fully contact, absorbed, adsorb by the wetland microorganism, by the metabolism removal that is degraded, produce the harmless entraining air stream 13 that goes out.Simultaneously, air-flow also can have the effect of an aeration to wetland bed body in artificial swamp aerated reaction bed 7 flow process, form artificial swamp aerated reaction bed 7, and then can improve the well-oxygenated environment of wetland bed body greatly, promote the aerobic removal of pollutent in the livestock and poultry farm high-concentration waste water.By after 12 collections of artificial swamp header, discharge from artificial wetland effluent pipe 10 after the final sewage disposal.Wetland effluent pipe 10 arranges one section water seal arrangement 11, inner can form one section permanent flooding area, forms fluid-tight voluntarily, stop gas in the cloth air chamber 9 without artificial swamp aerated reaction bed 7 directly by 10 mouthfuls of discharges of rising pipe.

Claims (5)

1. the system of methane waste product oxidation is worked in coordination with in the artificial wetland high-efficiency sewage disposal, it is characterized in that: this system comprises water distribution hypothallus (5) and artificial swamp aerated reaction bed (7), water distributor (4) wherein is set in the water distribution hypothallus (5) to be connected with sewage water inlet pipe (1), and plantation wetland plant (3), artificial swamp aerated reaction bed (7) bottom is provided with cloth air chamber (9) and the artificial swamp header (12) of uniform aeration head (14), wherein cloth air chamber (9) links to each other with low-concentration methane inlet pipe (2), and artificial swamp header (12) outlet is provided with the artificial wetland effluent pipe (10) of water seal arrangement (11).
2. the system as claimed in claim 1 is characterized in that: described system handles the livestock and poultry farm high-concentration sewage and contains the low-concentration methane off-gas oxidizing and handles and carried out coupling efficiently.Utilize the wetland microbial process to handle low-concentration methane waste gas, and utilize and to contain low-concentration methane waste gas vertical current constructed wetland is carried out aeration, improve the well-oxygenated environment of wetland bed body, and then improve wet land system to the aerobic removal of pollutent in the high density livestock and poultry farm waste water.
3. the system as claimed in claim 1, it is characterized in that: described water distribution hypothallus (5) selects for use less fine sand of particle diameter etc. as matrix, and even water distributor (4) is set.
4. the system as claimed in claim 1, it is characterized in that: described artificial swamp aerated reaction bed (7) bottom arranges low-concentration methane gas air inlet cloth air chamber (9) and uniform aeration head (14), can make the stable back of gas along direction upwards diffusion gradually in wetland inside of charge air flow (8).
5. the system as claimed in claim 1, it is characterized in that: described artificial wetland effluent pipe (10) arranges water seal arrangement (11).
CN201310158512.6A 2013-05-02 2013-05-02 Method and system for realizing efficient wastewater treatment and waste methane gas oxidation together via artificial wetland Expired - Fee Related CN103253823B (en)

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Cited By (11)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN104118942A (en) * 2014-08-01 2014-10-29 方帅 Sewage treatment process
CN105174626A (en) * 2015-09-18 2015-12-23 山东大学 Constructed wetland coupled biological reaction tank purification water-gas system
CN105174473A (en) * 2015-09-21 2015-12-23 中国农业大学 Method for reinforced artificial wetland deep biogas slurry treatment through aeration
CN105271528A (en) * 2015-11-15 2016-01-27 安徽锋亚环境技术有限公司 Anti-clogging artificial wetland system capable of efficiently removing nitrogen and phosphorus
CN107998874A (en) * 2017-12-19 2018-05-08 南京科技职业学院 A kind of artificial swamp VOCs exhaust gas purifying methods and system
CN108325373A (en) * 2018-01-26 2018-07-27 安徽金源农林专业合作社 A kind of organic waste-water treating apparatus
CN109157978A (en) * 2018-10-08 2019-01-08 韩汶冀 A kind of industrial waste gas ecological treatment system
CN110715833A (en) * 2019-10-24 2020-01-21 桂林理工大学 Manufacturing method of constructed wetland greenhouse gas collection device
CN111115981A (en) * 2020-01-20 2020-05-08 上源环工生态环境科技(苏州)有限公司 Resource regeneration type constructed wetland system
CN111453940A (en) * 2020-05-11 2020-07-28 沈阳农业大学 Constructed wetland device with water purification and marsh gas collection functions
CN113636646A (en) * 2021-08-16 2021-11-12 浙江海河环境科技有限公司 Combined treatment method and device for waste water and waste gas

Citations (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN2844113Y (en) * 2004-08-30 2006-12-06 徐宝安 Wet-land sewage-water treater of filter adsorptive submerge
CN202558739U (en) * 2012-05-09 2012-11-28 河海大学 Rural life wastewater resource processing device

Patent Citations (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN2844113Y (en) * 2004-08-30 2006-12-06 徐宝安 Wet-land sewage-water treater of filter adsorptive submerge
CN202558739U (en) * 2012-05-09 2012-11-28 河海大学 Rural life wastewater resource processing device

Cited By (17)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN104118942B (en) * 2014-08-01 2016-02-03 青岛橡胶谷知识产权有限公司 A kind of sewage treatment process
CN104118942A (en) * 2014-08-01 2014-10-29 方帅 Sewage treatment process
CN105174626A (en) * 2015-09-18 2015-12-23 山东大学 Constructed wetland coupled biological reaction tank purification water-gas system
CN105174473A (en) * 2015-09-21 2015-12-23 中国农业大学 Method for reinforced artificial wetland deep biogas slurry treatment through aeration
CN105174473B (en) * 2015-09-21 2017-10-31 中国农业大学 A kind of system of enhanced aeration artificial swamp advanced treating biogas slurry
CN105271528A (en) * 2015-11-15 2016-01-27 安徽锋亚环境技术有限公司 Anti-clogging artificial wetland system capable of efficiently removing nitrogen and phosphorus
CN105271528B (en) * 2015-11-15 2017-12-29 安徽锋亚环境技术有限公司 A kind of anti-clogging artificial wet land system of high-efficient denitrification and dephosphorization
CN107998874B (en) * 2017-12-19 2020-12-15 南京科技职业学院 Constructed wetland VOCs waste gas purification method and system
CN107998874A (en) * 2017-12-19 2018-05-08 南京科技职业学院 A kind of artificial swamp VOCs exhaust gas purifying methods and system
CN108325373A (en) * 2018-01-26 2018-07-27 安徽金源农林专业合作社 A kind of organic waste-water treating apparatus
CN108325373B (en) * 2018-01-26 2021-03-19 安徽金源农牧科技有限公司 Organic wastewater treatment device
CN109157978A (en) * 2018-10-08 2019-01-08 韩汶冀 A kind of industrial waste gas ecological treatment system
CN109157978B (en) * 2018-10-08 2021-04-20 新疆宜中天环保科技有限公司 Ecological processing system of industrial waste gas
CN110715833A (en) * 2019-10-24 2020-01-21 桂林理工大学 Manufacturing method of constructed wetland greenhouse gas collection device
CN111115981A (en) * 2020-01-20 2020-05-08 上源环工生态环境科技(苏州)有限公司 Resource regeneration type constructed wetland system
CN111453940A (en) * 2020-05-11 2020-07-28 沈阳农业大学 Constructed wetland device with water purification and marsh gas collection functions
CN113636646A (en) * 2021-08-16 2021-11-12 浙江海河环境科技有限公司 Combined treatment method and device for waste water and waste gas

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