CN105129949B - Natural flocculation activity composition is extracted from Citrus peel, algicide is prepared and its method for going algae in water removal - Google Patents
Natural flocculation activity composition is extracted from Citrus peel, algicide is prepared and its method for going algae in water removal Download PDFInfo
- Publication number
- CN105129949B CN105129949B CN201510558579.8A CN201510558579A CN105129949B CN 105129949 B CN105129949 B CN 105129949B CN 201510558579 A CN201510558579 A CN 201510558579A CN 105129949 B CN105129949 B CN 105129949B
- Authority
- CN
- China
- Prior art keywords
- citrus peel
- water
- algae
- algicide
- extracted
- 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.)
- Expired - Fee Related
Links
Landscapes
- Separation Of Suspended Particles By Flocculating Agents (AREA)
Abstract
The present invention relates to a kind of natural flocculation activity component extracting method.A kind of method that natural flocculation activity composition is extracted from Citrus peel, first by pretreated Citrus peel and ultra-pure water, distilled water or boils the running water of cooling according to quality：Volume ratio is 1:2.78~33.33 ratio mixing；Then leaching liquor is processed, removal Citrus peel slag obtains Citrus peel aqueous extract.It is a kind of to utilize the foregoing natural flocculation activity composition extracted from Citrus peel to prepare algicide and the method for going algae in water removal, gained Citrus peel 0.5~10mL of aqueous extract ultra-pure waters, distilled water or the running water for boiling cooling are diluted to 30mL, flocculant finished product is obtained；Stood during the flocculant is added into algae-containing water, so that the algae in flocculant and water reacts, so as to remove algae from water.The present invention natural flocculation activity composition is extracted from Citrus peel obtained in algicide, belong to natural component, it is degradable in water body for except algae, do not result in secondary pollution.
Description
Technical field
The present invention relates to a kind of natural flocculation activity component extracting method for except algae, more particularly, to one kind from ponkan
Natural flocculation activity composition is extracted in skin, flocculant is prepared and its method for removing algae in water.
Background technology
Body eutrophication is one of topmost water pollution problems that the world today faces.With modern cityization and
Industry continue to develop, body eutrophication is on the rise, it has also become restriction Chinese national economy and social development it is main because
Element.Body eutrophication causes wawter bloom to be broken out again and again, and function of water body is subject to expensive damage.
In breakout of water bloom emergency processing, machinery is salvaged and expends a large amount of manpowers, and the biological treatment startup optimization time is again more long,
So people develop it is various kill removing algae agent, the treatment for algae achieves certain effect, but algicide has necessarily
Residual toxicity, and with going deep into for studying Algae toxins, traditional algicide is added the drawbacks of rear Algae toxins are discharged into water body and also shown
Reveal and.Natural flocculation activity composition is extracted from plant for except algae, with safe and harmless, during flocculation removes algae not
Frustule can be destroyed, many advantages, such as do not result in secondary pollution, and abundant raw material, it is cheap.Therefore, to using natural
Flocculant obtains the attention of people to algae-containing water body except the research of algae.
Chinese invention patent《Method and the application of environment-friendly type flocculant are prepared by discarding pericarp》（Application number：
201310568550.9）Disclose a kind of orange peel of utilization natural air drying and roll and be crushed to particle, by particle in a kettle.
Plus ethanol, immersion, filtration under diminished pressure is dried to constant weight to without solution outflow, by cationic polymer and the pericarp dried to constant weight
Mixing, stirs, and crushes, sieving, the method that powder and calcium oxide or clay are mixed to get into flocculant, patent gained
The process object of flocculant is can to use it for treatment oil field production waste or waste water-base drilling liquid treatment.The flocculant
Manufacturing process is cumbersome, in addition it is also necessary to pressure vessels such as reactors.
The content of the invention
The present invention extracts natural flocculation activity composition from Citrus peel, prepares in view of the shortcomings of the prior art, proposing one kind
Algicide and its method for removing algae in water, algae is removed for the Small-scale Landscape Water Bodies with blue-green algae as sociales, except algae is thorough, speed
Degree is fast, can safely and effectively control algal bloom.
The technical solution adopted in the present invention：
A kind of method that natural flocculation activity composition is extracted from Citrus peel, including step is as follows：
（1）By pretreated Citrus peel and ultra-pure water, distilled water or the running water of cooling is boiled according to quality：Volume
Than being 1:2.78~33.33 ratio mixing；
（2）Leaching liquor is processed, removal Citrus peel slag obtains Citrus peel aqueous extract.
The step of described method that natural flocculation activity composition is extracted from Citrus peel, pretreatment, includes that Citrus peel is clear
The process wash, dry or dry, crushed：Citrus peel is cleaned with the running water or ultra-pure water that boil cooling, is dried naturally or 40
Drying and processing 2~4 days under the conditions of~60 DEG C, acquisition dries ponkan leather material, is then crushed to granular size for 20~80 mesh.
The described method that natural flocculation activity composition is extracted from Citrus peel, step（1）In, Citrus peel and ultra-pure water,
Distilled water is placed 0.5~48 hour after boiling the running water mixing of cooling, to promote contained active component in Citrus peel
It is fully dissolved out.
The described method that natural flocculation activity composition is extracted from Citrus peel, step（2）In, using centrifuge to extraction
Liquid is processed, and removal Citrus peel slag is obtained after Citrus peel aqueous extract again by 0.45 μm or 0.22 μm of membrane filtration.
The described method that natural flocculation activity composition is extracted from Citrus peel, it is characterised in that：Centrifuge speed is controlled
In 1000~9000 r/min.
A kind of method for preparing algicide using the foregoing natural flocculation activity composition extracted from Citrus peel, is by gained
Citrus peel 0.5~10mL of aqueous extract ultra-pure waters, distilled water boil the running water of cooling and are diluted to 30mL.
It is a kind of to utilize the foregoing natural flocculation activity composition extracted from Citrus peel to prepare algicide and for going in water removal
The method of algae, its step is：
1）Gained Citrus peel 0.5~10mL of aqueous extract ultra-pure waters, distilled water or the running water for boiling cooling is dilute
30mL is released, flocculant finished product is obtained；
2）By in flocculant addition algae-containing water, 3~4 hours are stood, so that the algae in flocculant and water occurs instead
Should, the flco of generation is fully precipitated, so as to remove algae from water.
The natural flocculation activity composition extracted from Citrus peel prepares algicide and the side for going algae in water removal
Method, when using, flocculant usage is determined by experiment according to frustule quantity in water body.
Beneficial effects of the present invention：
1st, the present invention extracts natural flocculation activity composition from Citrus peel and prepares algicide and for the method except algae, obtains
Algicide obtained in the natural flocculation activity composition of Citrus peel, belongs to natural component, degradable in water body, does not result in secondary dirt
Dye.It is easy to operate except algae is thorough, speed fast.
2nd, Citrus peel natural flocculating agent prepared by the present invention, can effectively remove algae, and frustule flocculation is agglomerating to sink under water, right
The influence of environment is small, and non-secondary pollution, water body is limpid, does not influence water body attractive in appearance, it is adaptable to the small-sized scape with blue-green algae as sociales
See water body and remove algae.
3rd, Citrus peel natural flocculating agent of the present invention and its algae-removing method, without stirring after adding, with efficient, energy-conservation, ring
The advantages of guarantor, and frond can be made to be settled down to the bottom, it is a kind of comparatively ideal algicide for settling algae.Practicality of the present invention
By force, except algae low cost, it is easy to popularization and application.
4. it is Citrus peel that the present invention is raw materials used, so that for its recycling proposes new approach；It is simultaneously of the invention
Simple with flocculant extraction process, easy to operate, many advantages, such as without large-scale instrument and equipment, the flocculant of extraction has good
Good flocculating effect, can effectively go algae in water removal, for algae removal provides new method.
Specific embodiment
Below by specific embodiment, technical scheme is described in further detail.
Embodiment 1
The present invention extracts natural flocculation activity composition from Citrus peel and prepares algicide and for the method except algae, including with
Lower step：
（1）Fresh Citrus peel is cleaned, dried naturally or dried, granular size is crushed to for 20~80 mesh；
（2）By the Citrus peel and ultra-pure water or distilled water after crushing, the running water of cooling is boiled according to quality：Volume=
1:2.78~1:33.33 ratio mixing, preferably 1:11.11, and place 0.5~48 hour after stirring, preferably 24 is small
When, to promote contained active component in Citrus peel to be fully dissolved out；
（3）Centrifugal treating is carried out to leaching liquor using centrifuge, removal Citrus peel slag obtains Citrus peel aqueous extract；
（4）The running water for take 0.5~10mL of extract solution ultra-pure waters or distilled water, boiling cooling is diluted to 30mL, this
As final flocculant；
（5）Take step（4）Described in flocculant, in adding pending algae-containing water, you can algae in water removal is gone, according to water
Frustule quantity is determined by experiment the optimum amount of flocculant in body.
Embodiment 2
The method that the present embodiment extracts natural flocculation activity composition from Citrus peel, including step is as follows：
（1）By pretreated Citrus peel and ultra-pure water, distilled water or the running water of cooling is boiled according to quality：Volume
Than being 1:2.78~33.33 ratio mixing.
（2）Leaching liquor is processed, removal Citrus peel slag obtains Citrus peel aqueous extract.
The quality that foregoing embodiments are referred to：Volume ratio, mass unit with gram or kilogram metering, volume unit correspondence with milli
Rise or rise metering, similarly hereinafter.
Embodiment 3
The method that the present embodiment extracts natural flocculation activity composition from Citrus peel, the difference with embodiment 2 is,
The step of Citrus peel is pre-processed includes：Citrus peel cleaning, the process dried naturally or dry, crush：Citrus peel is cold with boiling
But running water or ultra-pure water clean, dry naturally or 40~60 DEG C under the conditions of drying and processing 2~4 days, obtain and dry Citrus peel
Material, is then crushed to granular size for 20~80 mesh.
Embodiment 4
The method that the present embodiment extracts natural flocculation activity composition from Citrus peel, with embodiment 2 or the difference of embodiment 3
Part is：Step（1）In, Citrus peel and ultra-pure water, distilled water or boil cooling running water mix after place 0.5~48
Hour, to promote contained active component in Citrus peel to be fully dissolved out.
Embodiment 5
The present embodiment extracts the method for natural flocculation activity composition, the difference with foregoing embodiments from Citrus peel
It is：Step（2）In, leaching liquor is processed using centrifuge, centrifuge speed is controlled in 1000~9000 r/min, is gone
Except Citrus peel slag is obtained after Citrus peel aqueous extract again by 0.45 μm or 0.22 μm of membrane filtration.
Embodiment 6
The present embodiment is the method for preparing algicide using the foregoing natural flocculation activity composition extracted from Citrus peel,
I.e.：Gained Citrus peel 0.5~10mL of aqueous extract ultra-pure waters, distilled water or the running water for boiling cooling are diluted to
30mL, is obtained final flocculant（Algicide）.
Embodiment 7
The present embodiment is to prepare algicide and for going using the foregoing natural flocculation activity composition extracted from Citrus peel
The method of algae, 1 in water removal）By gained Citrus peel 0.5~10mL of aqueous extract ultra-pure waters, distilled water or boil cooling
Running water is diluted to 30mL, and this is final flocculant；
2）By in flocculant addition algae-containing water, 3~4 hours are stood, so that the algae in flocculant and water occurs instead
Should, the flco of generation is fully precipitated, so as to remove algae from water.
The natural flocculation activity composition extracted from Citrus peel is used for the method for going algae in water removal, according in water body
Frustule quantity is determined by experiment the optimum amount of flocculant.
Embodiment 8
The present embodiment extracts the method for natural flocculation activity composition, the difference with foregoing embodiments from Citrus peel
It is：By pretreated Citrus peel and ultra-pure water, distilled water or the running water of cooling is boiled according to quality：Volume ratio is 1:
2.78 ratio mixing.
Embodiment 9
The present embodiment extracts the method for natural flocculation activity composition, the difference with foregoing embodiments from Citrus peel
It is：By pretreated Citrus peel and ultra-pure water, distilled water or the running water of cooling is boiled according to quality：Volume ratio is 1:
33.33 ratio mixing.
Embodiment 10
The present embodiment extracts the method for natural flocculation activity composition, the difference with foregoing embodiments from Citrus peel
It is：By pretreated Citrus peel and ultra-pure water, distilled water or the running water of cooling is boiled according to quality：Volume ratio is 1:
6 ratio mixing.
Embodiment 11
The present embodiment extracts the method for natural flocculation activity composition, the difference with foregoing embodiments from Citrus peel
It is：By pretreated Citrus peel and ultra-pure water, distilled water or the running water of cooling is boiled according to quality：Volume ratio is 1:
20 ratio mixing.
Embodiment 12
The present embodiment extracts the method for natural flocculation activity composition, the difference with foregoing embodiments from Citrus peel
It is：By pretreated Citrus peel and ultra-pure water, distilled water or the running water of cooling is boiled according to quality：Volume ratio is 1:
26 ratio mixing.
With reference to the result of study in laboratory to extracting method, the algicide of natural flocculation activity composition of the invention（Wadding
Solidifying agent）Preparation and its in water except dry method and process are further illustrated.
Experiment 1
Take fresh Citrus peel ultrapure water clean, dry naturally, be crushed to granular size for 80 mesh.With ultra-pure water
It is water source, 5.625g Citrus peel powder is immersed in the water of 125mL, place 24 hours, leaching liquor is carried out using centrifuge
Centrifugal treating, rotating speed is 5000 r/min, and removal Citrus peel slag obtains Citrus peel aqueous extract, with ultra-pure water by the body of extract solution
Product is adjusted to 125mL；The running water for take extract solution 1mL ultra-pure waters or distilled water, boiling cooling is diluted to 30mL, and this is
Final flocculant；It is 7.6 × 10 to take flocculant 5mL and be added to 45 milliliters of concentration of algae6In the water body of individual/mL, 3h, part algae are stood
Class is deposited to the bottom, detects that its alga-killing rate is 71.73%；When extract solution is changed into 3mL from 1mL, its alga-killing rate is up to 93.46%.
Experiment 2
Take fresh Citrus peel to be rinsed well with the running water for boiling cooling, dry naturally, it is 20 to be crushed to granular size
Mesh.With ultra-pure water as water source, 5.625g Citrus peel powder is immersed in the water of 125mL, placed 24 hours, use centrifuge pair
Leaching liquor carries out centrifugal treating, and rotating speed is 5000 r/min, and removal Citrus peel slag obtains Citrus peel aqueous extract, will with ultra-pure water
The volume of extract solution is adjusted to 125mL；The running water for take extract solution 3mL ultra-pure waters or distilled water, boiling cooling is diluted to
30mL, this is final flocculant；It is 4.3 × 10 to take flocculant 5mL and be added to 45 milliliters of concentration of algae6It is quiet in the water body of individual/mL
3h is put, algae is deposited to the bottom, detect that its alga-killing rate is 82.53%.
Experiment 3
Take fresh Citrus peel to be rinsed well with the running water for boiling cooling, dry naturally, it is 80 to be crushed to granular size
Mesh.With ultra-pure water as water source, 11.25g Citrus peel powder is immersed in the water of 62.5mL, placed 24 hours, use centrifuge
Centrifugal treating is carried out to leaching liquor, rotating speed is 5000 r/min, and removal Citrus peel slag obtains Citrus peel aqueous extract, uses ultra-pure water
The volume of extract solution is adjusted to 62.5mL；Take extract solution 3mL ultra-pure waters or distilled water, boil the running water dilution of cooling
To 30mL, this is final flocculant；It is 5.0 × 10 to take flocculant 5mL and be added to 45 milliliters of concentration of algae6In the water body of individual/mL,
3h is stood, part algae is deposited to the bottom, detect that its alga-killing rate is 23.87%；When the volume of leaching liquor increases to 125 milliliters,
Its alga-killing rate is 94.52%.
Experiment 4
Take fresh Citrus peel to be rinsed well with the running water for boiling cooling, dry naturally, it is 80 to be crushed to granular size
Mesh.With ultra-pure water as water source, 5.625g Citrus peel powder is immersed in the water of 125mL, placed 24 hours, use centrifuge pair
Leaching liquor carries out centrifugal treating, and rotating speed is 1000 r/min, and removal Citrus peel slag obtains Citrus peel aqueous extract, will with ultra-pure water
The volume of extract solution is adjusted to 125mL；The running water for take extract solution 3mL ultra-pure waters or distilled water, boiling cooling is diluted to
30mL, this is final flocculant；It is 5.9 × 10 to take flocculant 5mL and be added to 45 milliliters of concentration of algae6It is quiet in the water body of individual/mL
3h is put, algae is deposited to the bottom, detect that its alga-killing rate is 85.08%.
Experiment 5
Take fresh Citrus peel to be rinsed well with the running water for boiling cooling, dry naturally, it is 80 to be crushed to granular size
Mesh.With ultra-pure water as water source, 5.625g Citrus peel powder is immersed in the water of 125mL, placed 24 hours, use centrifuge pair
Leaching liquor carries out centrifugal treating, and rotating speed is 3000 r/min, and removal Citrus peel slag obtains Citrus peel aqueous extract, will with ultra-pure water
The volume of extract solution is adjusted to 125mL；The running water for take extract solution 3mL ultra-pure waters or distilled water, boiling cooling is diluted to
30mL, this is final flocculant；It is 6.1 × 10 to take flocculant 5mL and be added to 45 milliliters of concentration of algae6It is quiet in the water body of individual/mL
3h is put, algae is deposited to the bottom, detect that its alga-killing rate is 97.42%；Wadded a quilt with cotton again after by flocculant with 0.22 μm of membrane filtration
Solidifying experiment, its alga-killing rate is reduced to 75.17%.
Claims (4)
1. it is a kind of that the method that natural flocculation activity composition prepares algicide is extracted from Citrus peel, comprise the following steps：
（1）Fresh Citrus peel is cleaned, dried naturally or dried, granular size is crushed to for 20~80 mesh；
（2）By the Citrus peel and ultra-pure water or distilled water after crushing, the running water of cooling is boiled according to quality：Volume=1:
2.78~1:33.33 ratio mixing, places 0.5~48 hour after stirring, with promote contained activity in Citrus peel into
Divide and be fully dissolved out；Foregoing quality：Volume ratio, mass unit with gram or kilogram metering, volume unit correspondence with milliliter or rise metering；
（3）Centrifugal treating is carried out to leaching liquor using centrifuge, removal Citrus peel slag obtains Citrus peel aqueous extract；
（4）The running water for take 0.5~10mL of extract solution ultra-pure waters or distilled water, boiling cooling is diluted to 30mL, and this is
Final algicide.
2. according to claim 1 that the method that natural flocculation activity composition prepares algicide is extracted from Citrus peel, it is special
Levy and be：Step（3）In, leaching liquor is processed using centrifuge, after removal Citrus peel slag obtains Citrus peel aqueous extract
Again by 0.45 μm or 0.22 μm of membrane filtration.
3. it is according to claim 1 and 2 that the method that natural flocculation activity composition prepares algicide is extracted from Citrus peel, its
It is characterised by：Centrifuge speed is controlled in 1000~9000 r/min.
4. the algicide that a kind of method by described in claim 1 is prepared is used for the method for going algae in water removal, its feature
It is：
1）Algicide consumption is determined by experiment according to frustule quantity in water body；
2）By in algicide addition algae-containing water, 3~4 hours are stood, so that the algae in algicide and water reacts, it is raw
Into flco fully precipitate, so as to removing algae from water.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201510558579.8A CN105129949B (en) | 2015-09-06 | 2015-09-06 | Natural flocculation activity composition is extracted from Citrus peel, algicide is prepared and its method for going algae in water removal |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201510558579.8A CN105129949B (en) | 2015-09-06 | 2015-09-06 | Natural flocculation activity composition is extracted from Citrus peel, algicide is prepared and its method for going algae in water removal |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN105129949A CN105129949A (en) | 2015-12-09 |
| CN105129949B true CN105129949B (en) | 2017-05-31 |
Family
ID=54715608
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201510558579.8A Expired - Fee Related CN105129949B (en) | 2015-09-06 | 2015-09-06 | Natural flocculation activity composition is extracted from Citrus peel, algicide is prepared and its method for going algae in water removal |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN105129949B (en) |
Families Citing this family (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106614768B (en) * | 2016-12-26 | 2019-03-15 | 河南城建学院 | The method extracted algistatic activity ingredient from purslane seed and be used to prepare algae-inhibiting agent |
Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US4455245A (en) * | 1982-02-19 | 1984-06-19 | Klein Pearl M | Flocculating reagent |
| CN103539248A (en) * | 2013-11-15 | 2014-01-29 | 陕西延长石油油田化学科技有限责任公司 | Method for preparing environment-friendly flocculating agent from waste fruit peels and application of environment-friendly flocculating agent |
| CN103588890A (en) * | 2013-11-15 | 2014-02-19 | 西安石油大学 | Modification method of citrus peel and application of citrus peel in drilling fluid treatment |
-
2015
- 2015-09-06 CN CN201510558579.8A patent/CN105129949B/en not_active Expired - Fee Related
Patent Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US4455245A (en) * | 1982-02-19 | 1984-06-19 | Klein Pearl M | Flocculating reagent |
| CN103539248A (en) * | 2013-11-15 | 2014-01-29 | 陕西延长石油油田化学科技有限责任公司 | Method for preparing environment-friendly flocculating agent from waste fruit peels and application of environment-friendly flocculating agent |
| CN103588890A (en) * | 2013-11-15 | 2014-02-19 | 西安石油大学 | Modification method of citrus peel and application of citrus peel in drilling fluid treatment |
Also Published As
| Publication number | Publication date |
|---|---|
| CN105129949A (en) | 2015-12-09 |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| Desta et al. | Wastewater treatment using a natural coagulant (Moringa oleifera seeds): optimization through response surface methodology | |
| Verma et al. | Eradication of fatal textile industrial dyes by wastewater treatment | |
| CN101362983B (en) | Extraction method of orange peel essential oil | |
| CN107162093A (en) | A kind of aquaculture water purifying agent and preparation method thereof | |
| CN107117695A (en) | It is a kind of for environmentally friendly medicament of Industrial Waste Water Treatments and preparation method thereof | |
| CN106865658A (en) | A kind of water quality cleansing agent and preparation method thereof | |
| CN109879539A (en) | A kind of waste water of basic printing and dyeing circular regeneration processing method | |
| CN105129948B (en) | A kind of Small-scale Landscape Water Bodies being used for using blue-green algae as sociales remove the flocculant preparation method of algae | |
| CN105771918A (en) | Preparation method and application of magnetic anaerobic granular sludge-chitosan adsorbent | |
| CN105692850A (en) | Preparation technique of banana peel polymer coagulant for water treatment | |
| CN101781005B (en) | Bionomic precipitator | |
| CN105129949B (en) | Natural flocculation activity composition is extracted from Citrus peel, algicide is prepared and its method for going algae in water removal | |
| CN110819659A (en) | Preparation method of seaweed organic polymer | |
| CN108585276A (en) | A kind of river sewage processing method | |
| Rafique et al. | Effective removal of direct orange 26 dye using copper nanoparticles synthesized from Tilapia fish scales | |
| CN106219715A (en) | A kind of preparation method of oxidation modification Pericarpium Musae coagulant | |
| CN103382230B (en) | From the method for extracting pectin from watermelon peel | |
| CN104973722A (en) | Printing and dyeing wastewater treatment system | |
| CN104276687A (en) | System and method for recycling animal protein feed from casing processing waste liquid | |
| CN108751431A (en) | A kind of sewage treatment flocculating agent | |
| CN104084142B (en) | A kind of preparation method of materialization modification macadamia shell adsorbent | |
| CN109293006A (en) | A kind of water purification agent and preparation method thereof adding biological enzyme | |
| CN1788822A (en) | Low-temperature differential pressure type extractive technique | |
| Deepthi et al. | Application of natural adsorbents for wastewater treatment | |
| CN106954643B (en) | The method that algistatic activity ingredient prepares algae-inhibiting agent is extracted from grape pip |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C06 | Publication | ||
| PB01 | Publication | ||
| C10 | Entry into substantive examination | ||
| SE01 | Entry into force of request for substantive examination | ||
| GR01 | Patent grant | ||
| GR01 | Patent grant | ||
| CF01 | Termination of patent right due to non-payment of annual fee | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20170531 Termination date: 20180906 |