CN101791596A - micro-irrigation emitter - Google Patents
micro-irrigation emitter Download PDFInfo
- Publication number
- CN101791596A CN101791596A CN200910244089A CN200910244089A CN101791596A CN 101791596 A CN101791596 A CN 101791596A CN 200910244089 A CN200910244089 A CN 200910244089A CN 200910244089 A CN200910244089 A CN 200910244089A CN 101791596 A CN101791596 A CN 101791596A
- Authority
- CN
- China
- Prior art keywords
- micro
- irrigation emitter
- irrigation
- photocatalyst
- water
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Pending
Links
Classifications
-
- 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
- Y02W10/30—Wastewater or sewage treatment systems using renewable energies
- Y02W10/37—Wastewater or sewage treatment systems using renewable energies using solar energy
Landscapes
- Catalysts (AREA)
Abstract
The invention discloses a micro-irrigation emitter, which comprises a water dropper, a spray-head and a drop-irrigation pipe (strip). The inner wall and/or the outer surface and/or a water outlet part of the micro-irrigation emitter are/is covered with a photocatalyst film coating layer. The micro-irrigation emitter of the invention has the advantages of: 1) a sterilizing function, namely, nano-TiO2 can damage cell membranes of cells because of super-oxidation decomposition capacity to cause cytoplasm loss to further cause the death of bacteria, which can prevent the occurrence of biological clogging; 2) a water purification function, namely, the micro-irrigation emitter has the function of eliminating water pollution and removing organic harmful substances in water so as to avoid chemical jamming; 3) a self-cleaning function, namely, the nano-TiO2 has extremely strong hydrophilicity so as to effectively prevent dust from being absorbed and staying to further realize the self-cleaning function and relieve physical jamming; and 4) an anti-aging function, namely, the nano-TiO2 needs to absorb a great amount of ultraviolet light to produce a light-catalyzed reaction, so the micro-irrigation emitter has relatively stronger functions of absorption, reflection, scattering and the like on the ultraviolet light and has weatherability and ageing resistance.
Description
Technical field
The present invention relates to agricultural irrigation technology, particularly relate to a kind of micro-irrigation emitter.
Background technology
Slight irrigation (micro irrigation), be according to the crop demand, by pipe-line system be installed in douche on the final stage pipeline, the nutrient that water and plant growth is required is with less flow, is delivered directly near a kind of irrigation method of the soil crop root evenly, exactly.Compare with traditional surface irrigation, slight irrigation belongs to localized irrigation's technology only with near the part soil the moistening crop root zone of less flow.It is the irrigation system phenomenon that usually occurs in service that irrigation system stops up, and also is to influence the major obstacle that micro irrigation technology is applied.
The reason that causes micro-irrigation emitter to stop up mainly comprises physics, chemistry and biological three big factors.Physical factor is meant organic or inorganic suspension contained in the irrigation water.The organic suspension owner will refer to biological residual body, comprises the broken end of residual body, plastics of algae, phytoplankton and zooplankter and bacterium etc.; Inorganic matter mainly refers to sand, mud and clay.Chemical factor mainly is meant the chemical substance that is dissolved in the water,, can become insoluble substance under certain condition, is deposited in the obstruction that irrigation system is caused in pipe interior or douche inside.Biological factor is meant the biology in the irrigation water, comprises algae, zooplankter, bacterial slime etc., and these biologies may cause conduit section to reduce or the douche obstruction by growth and breeding after entering irrigation system.
Table 1 is the different obstruction forms of micro-irrigation emitter, probability of happening and treatment measures commonly used.Stop up for physics, build sedimentation basin and filter plant is installed can be effectively reduced the solid matter that exists in the irrigation water, along with the increase of filtering progression, filter effect better, but construction investment and use cost increase sharply, and reduced the economic benefit of water-saving irrigation.The physical sedimentation filter plant can not be removed the chemical substance of dissolving in the water on the other hand, and the physics that causes for chemical precipitation stops up without any effect.Though use sulfuric acid and hydrochloric acid can be removed the chemical precipitation material in slight irrigation pipeline and the douche, remove the limited and cleaning repeatedly regularly of effect, time-consuming.In addition, because hydrochloric acid is with sulphuric acid is a strong corrosive, acid solution has destruction to soil, influences the crop normal growth, and severe contamination soil, water source do not meet the theme and the requirement on environmental protection of green agriculture.Prevent that the processing of biological obstruction employing chlorination from existing destruction soil and environmental pollution problems equally.
Because micro-irrigation emitter stops up the diversity of form, determined to handle the complexity of stopping up, and various obstruction form usually and deposit, and had a strong impact on the pour water efficient and the quality of slight irrigation, limit applying of micro irrigation technology, hindered the development of agricultural water-saving irrigation.
Table 1 micro-irrigation emitter stops up probability of happening and treatment measures
Photocatalyst [Photocatalyst] is the compound word of light [Photo=Light]+catalyst (catalyst) [catalyst], is a kind of with Nano titanium dioxide (TiO
2) be the general name of the photosemiconductor material with catalysis of representative.In brief, photocatalyst promptly is a photochemical catalyst.So-called catalyst is exactly to be used to reduce the required energy of chemical reaction, impels the chemical reaction pick up speed, but the material that itself does not change because of chemical reaction.Photocatalyst can produce similar photosynthetic light-catalyzed reaction under the irradiation of light, produce oxidability extremely strong free hydroxy (.OH) and active oxygen (O
2-), having very strong photooxidation restoring function, various organic compounds of oxidable decomposition and part inorganic matter can destroy the cell membrane of bacterium and solidify the protein of virus, but kill bacteria and decomposing organic pollutant resolve into free of contamination water (H to organic pollution
2O) and carbon dioxide (CO
2), thereby have extremely strong sterilization, mildew-resistant, antifouling and self-cleaning function.Photocatalyst also can react under faint light, if under ultraviolet irradiation, the activity of photocatalyst is stronger.
Summary of the invention
The objective of the invention is in order to solve micro-irrigation emitter blocking problem in the prior art, a kind of micro-irrigation emitter and production method thereof with sterilization, water purification, self-cleaning, anti-aging and performance of anti-blockage is provided.
For achieving the above object, a kind of micro-irrigation emitter according to embodiment of the present invention is provided, it comprises water dropper, shower nozzle and drip irrigation zone, the inwall of described micro-irrigation emitter and/or outer surface and/or delivery port position are coated with photocatalyst overlay film layer.
Preferably, described photocatalyst overlay film layer adopts the nano titanium oxide photocatalyst material to make.
The present invention also provides a kind of method of producing above-mentioned micro-irrigation emitter, and this method is at inwall and/or the outer surface and/or the delivery port position spraying photocatalyst overlay film layer of micro-irrigation emitter.
Preferably, described photocatalyst overlay film layer adopts the nano titanium oxide photocatalyst material to make.
The present invention also provides a kind of micro-irrigation emitter, and described micro-irrigation emitter is made by the material that contains photocatalyst material.
Preferably, described photocatalyst material is a nano titanium oxide.
The present invention also provides a kind of method of producing above-mentioned micro-irrigation emitter, adds a certain proportion of photocatalyst material in the polyethylene raw material of producing micro-irrigation emitter, and described photocatalyst material and polyethylene raw material mass mixing ratio example are between 2%～8%.
Preferably, described photocatalyst material is a nano titanium oxide.
Technique scheme has following advantage: typical photo-catalytic nano titanium dioxide produces strong catalytic degradation function under the effect of light.The beneficial effect of photocatalyst of titanium dioxide micro-irrigation emitter of the present invention is specially: 1) sterilizing function: the cell membrane that the super oxidative decomposition capacity of nano titanium oxide can destroy cell makes the cytoplasm loss cause bacterium death, can kill various bacteria such as Escherichia coli, staphylococcus aureus, and the mycin that bacterium dead volume or fungi can be discharged decomposes and harmless treatment, can prevent that micro-irrigation emitter from biological the obstruction being taken place.2) water purification function: have organic harmful substance purification function in water removing pollutant and the water, prevent the generation of mouldy and algae, prevent the generation of incrustation scale and adhere to, can also decompose the organic pollution that has adsorbed simultaneously, can eliminate the micro-irrigation emitter chemistry and stop up, and be applicable to reclaimed water for irrigation.3) self-cleaning function: after titanium dioxide is subjected to the ultraviolet ray irradiation, the surface has extremely strong hydrophily, the contact angle of water can be reduced to 0 degree, prevent that effectively absorption such as silt tiny in dust, the water and biological algae from stopping, thereby reach self-cleaning function, can alleviate micro-irrigation emitter generation physics and stop up.4) ageing resistace: light-catalyzed reaction takes place needs a large amount of ultraviolet rays that absorb, nano titanium oxide has effects such as stronger reflection, scattering to ultraviolet ray simultaneously, improve the ability of product ultra-violet radiation resisting, have very strong weatherability and ageing resistance, can substitute the effect of producing carbon black in the micro-irrigation emitter fully, reduce the production cost of micro-irrigation emitter.
The specific embodiment
Below in conjunction with embodiment, the specific embodiment of the present invention is described in further detail.Following examples are used to illustrate the present invention, but are not used for limiting the scope of the invention.
Micro-irrigation emitter that the embodiment of the invention provides and production method thereof are sprayed at sprinkling irrigation douche finished surface or nano titanium oxide and raw materials for production is mixed by a certain percentage with nano titanium oxide, directly make the micro-irrigation emitter product.Because photocatalyst is just as catalyst accelerating oxidation reduction reaction, itself does not participate in chemical reaction, and material self does not lose in the catalytic process.As long as nanometer titanium dioxide coating or material are not destroyed, then can bring into play redox active lastingly in theory, the transform light energy of utilizing nature to exist becomes the required energy generation catalytic action of chemical reaction.
The effect of micro-irrigation emitter is that the pressure flow of final stage pipeline (hollow billet) evenly and stably is poured near the soil of crop root zone, and the influence that changed by head is less, has the little and stable characteristics of water yield.Water stream channel tiny in the douche easily stops up, and makes hollow billet pipeline water outlet inequality, can make the whole system can't operate as normal when serious, even scraps.Therefore, the quality of micro-irrigation emitter performance of anti-blockage directly has influence on the height of the life-span of irrigation system and the quality of pouring water.Photocatalyst of titanium dioxide micro-irrigation emitter production method of the present invention is as follows:
Method one: micro-irrigation emitter is raw material production with the polyethylene mainly, with nano titanium oxide (TiO
2) in high-speed mixer, behind the mixing, send into the granulation of extruder melt blending with polyethylene (PE), after the pellet drying, adopt plastic molding press to make various micro-irrigation emitters.Titanium dioxide and polyethylene raw material mass mixing ratio example are as the criterion to reach the highest photochemical catalytic oxidation efficient between 2%～8%.
Method two: directly with nano titanium oxide (TiO
2) be sprayed at micro-irrigation emitter base material inwall and/or outer surface and/or delivery port, form photocatalyst overlay film layer performance effect.
Light-catalyzed reaction takes place in nano titanium oxide photocatalyst micro-irrigation emitter under solar ultraviolet irradiation, bring into play self-cleaning, oxidation and biocidal efficacies, effectively reduces to stop up and takes place, the ageing resistace of enhancing douche.Performance super hydrophilicity in the surface of nano titanium oxide has the anti-fouling and self-cleaning effect under illumination.The surface forms electric cave and free electron simultaneously, in conjunction with airborne oxygen G﹠W, redox reaction takes place, the surface forms the hydroxyl free radical and the ultra-oxygen anion free radical of strong oxidizing property, but organic pollution and kill bacteria virus resolve into CO with organic matter in the decomposition water
2And H
2O, and the activity of bacteria growing inhibiting and virus reach sterilization, purification, mildew-resistant, effects such as decontamination.Reduce micro-irrigation emitter generation physics, chemistry and biological the obstruction, strengthen performance of anti-blockage.Has significant effect for middle water slight irrigation.
Nano titanium oxide photocatalyst material generation light-catalyzed reaction needs a large amount of ultraviolet rays that absorb, and greatly reduces the infringement of ultraviolet radiation to the equipment of pouring water.So nano titanium oxide photocatalyst micro-irrigation emitter has very strong ageing resistace, has ultraviolet screener superiority and high-weatherability.Therefore, can remove in traditional micro-irrigation emitter production process and mix the carbonarius mother, strengthen the production process of product ageing resistace.Reduce the micro-irrigation emitter production cost on the one hand; The transparent on the other hand equipment of pouring water has increased ultraviolet irradiation transmitted intensity, promotes the nano titanium dioxide photocatalysis reaction, can better bring into play the photocatalyst effect.
As can be seen from the above embodiments, the embodiment of the invention is by producing typical photo-catalytic nano titanium dioxide-coated in the raw materials for production of micro-irrigation emitter in the surface or the blending of micro-irrigation emitter, make the micro-irrigation emitter of this scheme have following beneficial effect: 1) sterilizing function: the cell membrane that the super oxidative decomposition capacity of nano titanium oxide can destroy cell makes the cytoplasm loss cause bacterium death, can kill Escherichia coli, various bacteria such as staphylococcus aureus, and the mycin that bacterium dead volume or fungi can be discharged decomposes and harmless treatment, can prevent that micro-irrigation emitter from biological the obstruction being taken place.2) water purification function: have organic harmful substance purification function in water removing pollutant and the water, prevent the generation of mouldy and algae, prevent the generation of incrustation scale and adhere to, can also decompose the organic pollution that has adsorbed simultaneously, can eliminate the micro-irrigation emitter chemistry and stop up, and be applicable to reclaimed water for irrigation.3) self-cleaning function: after titanium dioxide is subjected to the ultraviolet ray irradiation, the surface has extremely strong hydrophily, the contact angle of water can be reduced to 0 degree, prevent that effectively absorption such as silt tiny in dust, the water and biological algae from stopping, thereby reach self-cleaning function, can alleviate micro-irrigation emitter generation physics and stop up.4) ageing resistace: light-catalyzed reaction takes place needs a large amount of ultraviolet rays that absorb, nano titanium oxide has effects such as stronger reflection, scattering to ultraviolet ray simultaneously, improve the ability of product ultra-violet radiation resisting, have very strong weatherability and ageing resistance, can substitute the effect of producing carbon black in the micro-irrigation emitter fully, reduce the production cost of micro-irrigation emitter.
Photocatalyst is a kind of nano level metal oxide materials, can be numerous as the material of photocatalyst, comprise titanium dioxide (TiO
2), zinc oxide (ZnO), tin oxide (SnO
2), zirconium dioxide (ZrO
2), cadmium sulfide multiple oxide sulfide semiconductors such as (CdS).Titanium dioxide (TiO wherein
2) because of its oxidability is strong, chemical property is stablized nontoxic, becomes the most frequently used nano photo-catalytic material at present.
The above only is a preferred implementation of the present invention; should be pointed out that for those skilled in the art, under the prerequisite that does not break away from the technology of the present invention principle; can also make some improvement and modification, these improve and modification also should be considered as protection scope of the present invention.
Claims (8)
1. a micro-irrigation emitter is characterized in that, described micro-irrigation emitter comprises water dropper, shower nozzle and drip irrigation pipe or drip irrigation zone, and the inwall of described micro-irrigation emitter and/or outer surface and/or delivery port position are coated with photocatalyst overlay film layer.
2. micro-irrigation emitter as claimed in claim 1 is characterized in that, described photocatalyst overlay film layer adopts the nano titanium oxide photocatalyst material to make.
3. a method of producing micro-irrigation emitter as claimed in claim 1 or 2 is characterized in that, at inwall and/or the outer surface and/or the delivery port position spraying photocatalyst overlay film layer of micro-irrigation emitter.
4. the production method of micro-irrigation emitter as claimed in claim 3 is characterized in that, described photocatalyst overlay film layer adopts the nano titanium oxide photocatalyst material to make.
5. a micro-irrigation emitter is characterized in that, described micro-irrigation emitter is made by the material that contains photocatalyst material.
6. micro-irrigation emitter as claimed in claim 5 is characterized in that, described photocatalyst material is a nano titanium oxide.
7. the method for a production such as claim 5 or 6 described micro-irrigation emitters, it is characterized in that, add a certain proportion of photocatalyst material in the polyethylene raw material of producing micro-irrigation emitter, described photocatalyst material and polyethylene raw material mass mixing ratio example are between 2%～8%.
8. the production method of micro-irrigation emitter as claimed in claim 7 is characterized in that, described photocatalyst material is a nano titanium oxide.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN200910244089A CN101791596A (en) | 2009-12-28 | 2009-12-28 | micro-irrigation emitter |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN200910244089A CN101791596A (en) | 2009-12-28 | 2009-12-28 | micro-irrigation emitter |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN101791596A true CN101791596A (en) | 2010-08-04 |
Family
ID=42584642
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN200910244089A Pending CN101791596A (en) | 2009-12-28 | 2009-12-28 | micro-irrigation emitter |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN101791596A (en) |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103752560A (en) * | 2014-01-16 | 2014-04-30 | 中国农业大学 | Method for clearing jams of irrigation device of drip irrigation system by microbial antagonism |
| CN111545556A (en) * | 2020-05-18 | 2020-08-18 | 深圳市安泰宇盛科技有限公司 | Soil remediation method |
| CN111634973A (en) * | 2020-07-07 | 2020-09-08 | 广西碧福环保工程有限公司 | Water power generation's nanometer electro-optic catalytic sterilizer |
-
2009
- 2009-12-28 CN CN200910244089A patent/CN101791596A/en active Pending
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103752560A (en) * | 2014-01-16 | 2014-04-30 | 中国农业大学 | Method for clearing jams of irrigation device of drip irrigation system by microbial antagonism |
| CN103752560B (en) * | 2014-01-16 | 2016-05-04 | 中国农业大学 | Utilize microorganism antagonism to remove the method that drip irrigation system douche stops up |
| CN111545556A (en) * | 2020-05-18 | 2020-08-18 | 深圳市安泰宇盛科技有限公司 | Soil remediation method |
| CN111634973A (en) * | 2020-07-07 | 2020-09-08 | 广西碧福环保工程有限公司 | Water power generation's nanometer electro-optic catalytic sterilizer |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| Murgolo et al. | Novel TiO2-based catalysts employed in photocatalysis and photoelectrocatalysis for effective degradation of pharmaceuticals (PhACs) in water: A short review | |
| Saravanan et al. | Photocatalytic disinfection of micro-organisms: Mechanisms and applications | |
| Homocianu et al. | High-performance photocatalytic membranes for water purification in relation to environmental and operational parameters | |
| CN101791596A (en) | micro-irrigation emitter | |
| CN103434214B (en) | A kind of antibiosis and self-cleaning PTP aluminium foil and preparation method thereof | |
| CN201242632Y (en) | Nanometer self-cleaning light modulation glass | |
| Schutte-Smith et al. | Using visible light to activate antiviral and antimicrobial properties of TiO2 nanoparticles in paints and coatings: Focus on new developments for frequent-touch surfaces in hospitals | |
| Seifikar et al. | Floating photocatalysts as promising materials for environmental detoxification and energy production: A review | |
| CN103341356A (en) | Processing method of water purifying agent of ceramic tourmaline-loaded titanium dioxide film | |
| KR100503233B1 (en) | Preparation of photocatalytic thin film and water-treatment apparatus using thereof | |
| CN102093794A (en) | Method for preparing nano-titanium dioxide photocatalytic bactericidal coating | |
| CN204081331U (en) | Building outer wall has the high-performance laminated film purified air | |
| CN106280763A (en) | Kieselguhr photocatalytic spray liquid can be cleaned | |
| CN110776079A (en) | Method for promoting phenol pollutants to be efficiently photo-catalytically oxidized in situ by utilizing organic arsenic pollutants | |
| CN209193704U (en) | A kind of photocatalysis treatment device of pesticide organic wastewater | |
| CN201825819U (en) | Micro-pollution water treatment device | |
| CN106280761A (en) | Magnesium oxide photocatalytic spray liquid can be cleaned | |
| KR101840038B1 (en) | Titanium dioxide composition and method for prepairing the same | |
| CN216703457U (en) | Secondary sedimentation tank effluent weir capable of resisting algae breeding | |
| Alimoradzadeh et al. | Photocatalytic removal of Pseudomonas aeruginosa from water using titanium dioxide nanoparticles and UV irradiation | |
| CN203379809U (en) | High-performance air purifier | |
| CN106221427A (en) | Aluminium oxide photocatalytic spray liquid can be cleaned | |
| CN106221420A (en) | Erasable whitens white carbon black photocatalytic spray liquid | |
| CN106221404A (en) | Corallium Japonicum Kishinouye photocatalytic spray liquid can be cleaned | |
| CN106221419A (en) | Zeolite photocatalytic spray liquid can be cleaned |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C06 | Publication | ||
| PB01 | Publication | ||
| C10 | Entry into substantive examination | ||
| SE01 | Entry into force of request for substantive examination | ||
| C12 | Rejection of a patent application after its publication | ||
| RJ01 | Rejection of invention patent application after publication |
Application publication date: 20100804 |