CN102644584A - Water quality filtering treatment method applied to culture pond - Google Patents

Water quality filtering treatment method applied to culture pond Download PDF

Info

Publication number
CN102644584A
CN102644584A CN2012101178337A CN201210117833A CN102644584A CN 102644584 A CN102644584 A CN 102644584A CN 2012101178337 A CN2012101178337 A CN 2012101178337A CN 201210117833 A CN201210117833 A CN 201210117833A CN 102644584 A CN102644584 A CN 102644584A
Authority
CN
China
Prior art keywords
water
pond
temperature
pump
circuit
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.)
Granted
Application number
CN2012101178337A
Other languages
Chinese (zh)
Other versions
CN102644584B (en
Inventor
余炳炎
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Individual
Original Assignee
Individual
Priority date (The priority date 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 date listed.)
Filing date
Publication date
Application filed by Individual filed Critical Individual
Priority to CN201210117833.7A priority Critical patent/CN102644584B/en
Publication of CN102644584A publication Critical patent/CN102644584A/en
Application granted granted Critical
Publication of CN102644584B publication Critical patent/CN102644584B/en
Active legal-status Critical Current
Anticipated expiration legal-status Critical

Links

Images

Abstract

The invention discloses a water quality filtering treatment method applied to a culture pond. The water quality filtering treatment method comprises the steps of physically filtering water quality in the pond by adopting a physical filtering device, biochemically filtering water quality in the pond by adopting a biochemical filtering device, and circulating water in the pond by adopting a pumping device, wherein in the pumping device, a magnetic polarity detection circuit detects magnetic polarity signals of a motor rotor in a pump; after the magnetic polarity signals are operated by a processing control circuit, driving control signals are output; driving current, current polarity of which corresponds with operation requirements of the motor, is output through a driving circuit; therefore, the motor in the pump operates; furthermore, temperature of water in the pond is measured by adopting a temperature detection circuit; the processing control circuit operates according to the water temperature detected by the temperature detection circuit simultaneously, so that driving control signals of different pulse widths are output; therefore, the pump can work under power and flow of different pulse widths, so that a better filtering effect can be obtained.

Description

A kind of filtration treatment method that is applied to culturing pool matter
Technical field
The invention belongs to a kind of aquatic animals and plants and culture the filtration treatment method of water quality in the cell system; Specifically be applied in pond, garden, aquarium, the aquaculture pond; Relate to a kind of driving power,, make to culture between pond and water filtration treatment device to have suitable circulating water flow to regulate the flow of water according to the temperature regulation pump; Optionally bring into play physical filtering or biochemistry filtered effect thereby have, to reach desirable filtration treatment effect.
Background technique
In the existing technology, aquatic animals and plants is cultured cell system and is provided with filtrating equipment and pump, in filtrating equipment, adopts physical filtering and biochemistry filtered water body in the system is filtered and handles; To prevent the deterioration of water matter, simultaneously, draw water by pump; Make water flow to filtrating equipment from culturing the pond; After filtering and handling, flow back to again and culture the pond, make the water of culturing in the pond be filtered and handle, to improve the effect of filtering and handling.
But practice is found: adopt constant water flow to carry out circulating filtration and processing, the filtering effect of various quarters water quality is different; Further, adopt different water flow to circulate, the filtering effect of water quality is also different.
The temperature in each season is different; Temperature has tangible influence for the activity of bacterium; And the existence of bacterium affects the generation and the decomposition of material, and effect how to bring into play physical filtering preferably still is biochemistry filtered effect, with the filtration treatment effect that directly affects water quality.
Summary of the invention
The object of the present invention is to provide a kind of filtration treatment method that is applied to culturing pool matter; Regulate the driving power of pump in this method according to the variation of water temperature; So that the filtration treatment device has suitable flow with the breed pond; Physical filtering is handled or the effect of biochemistry filtered processing thereby can selectively bring into play preferably, and the filtration treatment effect to increase water quality prevents water quality deterioration.
The object of the invention is realized by following scheme:
A kind of water filtration processing method that is applied to culture the pond comprises and adopts the physical filtering device water quality in the breed pond to be carried out the step of physical filtering; Adopt biochemistry filtered device that the water quality of culturing in the pond is carried out biochemistry filtered step; Adopt water plug that the water of culturing in the pond is carried out the circuit step; In water plug; Detect the magnetic polarity signal of rotor in the pump by the magnetic polarity testing circuit; Export drive control signal after the treated control circuit computing, and meet the driving current of motor service condition, make motor rotation in the pump through drive circuit output current polarity; Be characterized in; Adopt a temperature sensing circuit that the coolant-temperature gage of culturing in the pond is measured, control and treatment circuit carries out computing according to the detected coolant-temperature gage of temperature sensing circuit simultaneously, regulates the pulse width of drive control signal according to following algorithm:
In the scope of 0 ℃~40 ℃ of water temperatures, be divided into two or more temperature sections; At the lower temperature section of temperature, the pulse width of drive control signal is narrower, obtains less water flow with less output power; At the higher temperature section of temperature, the pulse width broad of drive control signal obtains bigger water flow with bigger output power.
Like this, when water temperature is in the higher temperature section of temperature, biological grow up comparatively active; It is many to feed intake, and ight soil is also many, and pump work is at high power; Can improve the circular flow of water, make physical filtering handle the performance better action, organic matters such as food-residue, ight soil are in time filtered out; Make liver moss in the water, algae and bacterium etc. because nutriment is accelerated and filters and remove and its breeding is suppressed, harmful bacteria in the water simultaneously is because nutriment is accelerated and filters and remove; Its decomposition nutrition matter and the toxic substance that produces also are suppressed, thereby guarantee that water quality meets the requirements;
When water temperature is in the lower temperature section of temperature, biologically grow up comparatively inactively, it is few to feed intake; Ight soil is few, and the total amount of organic nutrient substance is less, and the breeding of liver moss, algae and bacterium etc. is also slower; Harmful bacteria decomposition nutrition matter and the toxic substance that produces is also slower, pump work can reduce the circular flow of water in low-power; Let water in the filtration treatment device, stop the long time; Help of the decomposition of beneficial bacterias such as nitrifying bacteria, make biochemistry filtered performance better action, guaranteed that water quality meets the requirements harmful matter.
Should be used to culture the water filtration processing method in pond, can be the different circulating water flow of filtration treatment device configuration according to the temperature of water, and then select the filter type that stresses, and water quality can be met the requirements better, helps preventing the deterioration of water quality.
The inventive method is in its concrete mode of execution; Scope to 10 ℃~30 ℃ of water temperatures is divided into the plurality of temperature section; System carries out according to some responsive temperature reference point T ℃; These temperature spotss all have comparatively significantly influence for vegeto-animal growth usually, as 10 ℃, 15 ℃, 18 ℃, 22 ℃, 25 ℃, 30 ℃ or the like.
The water filtration processing method that is applied to culture the pond of the present invention is owing to be the different circulating water flow of filtrating equipment configuration according to the temperature of water, when water temperature is in the lower temperature section of temperature; Adopt less circulating water flow, so pump work is on than the slow-speed of revolution; The power of its actual consumption is also lower, and this also has very important significance aspect energy-conservation, particularly; Corresponding to the Various Seasonal in every year, in those lower seasons, can also save a large amount of power supplys in temperature.
Be preferably, in the such scheme, the pulse width of drive control signal system regulates according to the actual speed of rotor in the pump.Concrete way can be; Employing is transferred corresponding different rotating speeds according to different temperatures; And compare with the actual time of rotating half cycle of rotor by the set time of rotor rotation half cycle in the pairing pump of different rotating speeds; Further regulate the increase and decrease of drive control signal pulse width according to result relatively, motor is operated in set on the rotating speed, so that obtain corresponding water flow.
In the such scheme, also can adopt the parameter input circlult to import the different parameters that is provided with,, satisfy different requirement better to obtain the corresponding water flow of multiple different temperature to control and treatment circuit.
In the such scheme, the return difference algorithm is set near also can being employed in temperature reference point, can avoids when water temperature is near temperature reference point T ℃, owing to reasons such as temperature samplings, the working pulse width of pump is frequent transitions between the different gears of two settings.
In the such scheme, also can adopt the temperature-averaging value-based algorithm, can make the stability of processing control of temperature sampling and system better.
Description of drawings
Fig. 1 is the allocation plan that a kind of aquatic animals and plants is cultured cell system;
Fig. 2 is the electric functional-block diagram of the water plug of the inventive method employing;
Fig. 3 is the circuit diagram of the water plug of the inventive method employing;
Fig. 4 is the flow diagram of a kind of embodiment of Fig. 3;
Fig. 5 is the graph of a relation that the driving pulse width of water temperature and pump in Fig. 4 program is provided with;
Fig. 6 is the ammonia nitrogen concentration curve comparison diagram of Fig. 4 mode of execution;
Fig. 7 is the flow diagram of the another kind of embodiment of Fig. 3;
Fig. 8 is the graph of a relation that water temperature and pump work rotating speed are provided with in Fig. 7 program;
Fig. 9 is the ammonia nitrogen concentration curve comparison diagram of Fig. 7 mode of execution;
Figure 10 is the flow diagram of the another kind of embodiment of Fig. 3;
Figure 11 is the graph of a relation that water temperature and pump work rotating speed are provided with in Figure 10 program;
Figure 12 is the ammonia nitrogen concentration curve comparison diagram of Figure 10 mode of execution;
Figure 13 is the pulse sequence schematic representation of relevant each point of Fig. 3 and parts.
Embodiment
Below in conjunction with accompanying drawing the inventive method is made concrete detailed description:
With reference to Fig. 1; View and admire in breed and to be provided with the water filtration processing system in the pond; The water filtration processing system comprises filter bag A, biochemistry filtered cotton B, ceramic ring C, active carbon D, biochemistry ball E, UV lamp F and water plug G, wherein, cultures the water of viewing and admiring in the pond and gets into the water filtration processing system from overflow; And carry out filtration treatment through above-mentioned various piece successively, water is extracted and send breed back to from water outlet and view and admire the pond by water plug G again.
With reference to Fig. 2 and Fig. 3; Water plug G comprises power circuit 1, control and treatment circuit 2, magnetic polarity testing circuit 3, drive circuit 4, pump 5, temperature sensing circuit 6 and parameter input circlult 7; Wherein, control and treatment circuit 2 detects rotor 52 polarity that different temperatures and magnetic polarity testing circuit 3 detect motor 51 through temperature sensing circuit 6 and carries out calculation process, to export the drive control signal of different pulse widths; And meet the driving current of motor 51 service conditions through drive circuit 4 output current polarity; Make motor 51 runnings in the pump, pump 5 is drawn water, and can let pump 5 be operated on different power and the flow.
With reference to Fig. 3; Water plug also is provided with parameter input circlult 7; Can be the control and treatment circuit input parameter; Control and treatment circuit is operated on different algorithms and the temperature reference point, with obtain different temperature reference point, temperature section number and each temperature section the water flow of multiple correspondence of corresponding different pulse widths etc., to adapt to multiple different needs.
In following various mode of executions, the concentration curve of ammoniacal nitrogen ties up under the following experimental condition and obtains:
Experiment ties up in the breed cell system injects about 0.2 cubic metre Total Water, cultures the bed load that the bottom, pond is covered with about 3 cm thicks, plants and is implanted with totally 10 strains of same pasture and water, and reaching to culture has totally eight of equirotal goldfish, and throw in according to 2 gram feeds every day.In addition, culture cell system homeostasis, arrange earlier and culture and just begin after one month carry out this test for making.Moreover, before the on-test of each temperature spots, all upgrade all filtering materials; Change water about 50%; Filter bag cleaned once in per 3 days, under each temperature section, moved 15 days at least, did the test of lower temperature point earlier; After do the test of low high-temperature point, the concentration of ammoniacal nitrogen in the detection water before each off-test again.The rated power of water plug when 100% nominal pulse width is 25 watts, and 100% corresponding specified water flow is 200 liter per hours.
Can't find during test can be in 0 ℃~40 ℃ water temperature range all can normal growth fish, the goldfish of this experiment selected water temperature accommodation broad is done experiment.Because goldfish is below 10 ℃, and can't normal growth more than 30 ℃, only between 10 ℃ ~ 30 ℃, carry out so test.
Mode of execution one:
With reference to Fig. 1, Fig. 2, Fig. 3, Fig. 4 and Fig. 5; It is that a kind of practical implementation algorithm application is in the water filtration processing method of culturing the pond; In this algorithm, get 18 ℃ for temperature reference point T ℃, make temperature section become 0 ℃-<18 ℃ and >=18 ℃-40 ℃ two sections; Control and treatment circuit 2 is directly exported the pulse width of corresponding driving control signal according to different water temperatures; Specifically: when water temperature more than or equal to 18 ℃, motor 51 is operated on the 100% corresponding nominal pulse width of rated power, to export 100% specified water flow; When water temperature less than 18 ℃, motor 51 is operated on 85% the nominal pulse width, to export about 85% specified water flow.
With reference to Fig. 6, in ammonia nitrogen concentration curve comparison diagram, the concentration curve of correspondence when curve a is nominal pulse width; Curve b is 85% the corresponding concentration curve of nominal pulse width; The corresponding concentration curve of 100% nominal pulse width can be seen from curve when curve c was >=18 ℃~30 ℃ high temperature section, when temperature less than 18 ℃; Concentration value on the curve b is lower than curve a concentration value, i.e. the better effects if of filtration treatment.
With reference to Fig. 5, when temperature during less than 18 ℃, the consumed power of pump is merely about 85% rated power, can practice thrift the electric energy near 15%.
Mode of execution two:
With reference to Fig. 1, Fig. 2, Fig. 3, Fig. 7 and Fig. 8, it is that another kind of practical implementation algorithm application is in the water filtration processing method of culturing the pond, in this algorithm; Have two temperature reference point Ta and Tb; Make temperature section become three sections, and, transfer corresponding different rotating speeds according to the residing temperature section of different temperatures according to the figure of Fig. 8; And compare with the actual time of rotating half cycle of rotor by the set time of rotor rotation half cycle in the pairing pump of different rotating speeds; Further regulate the increase and decrease of drive control signal pulse width according to result relatively, motor is operated on the corresponding rotating speeds, to obtain corresponding water flow.Specifically: Ta gets 15 ℃, Tb and gets 20 ℃, temperature section become 0 ℃-<15 ℃,>=15 ℃-≤20 ℃ and>20 ℃-40 ℃ three sections, when water temperature greater than 20 ℃, motor 51 is operated on 100% the rated speed, to export 100% specified water flow; When 20 ℃>=water temperature>=15 ℃, motor 51 is operated on 90% the rated speed, to export about 90% specified water flow; When water temperature less than 15 ℃, motor 51 is operated on 75% the rated speed, to export about 75% specified water flow.
With reference to Fig. 9, in ammonia nitrogen concentration curve comparison diagram, the concentration curve of correspondence when curve a is rated speed; Curve b and curve d are respectively the corresponding concentration curve of rated speed of 90% rated speed and 75%; The corresponding concentration curve of 100% rated speed can be seen from curve when curve c was>20 ℃~30 ℃ high temperature section, when temperature less than 20 ℃; Concentration value on curve b and the curve d is lower than curve a concentration value, i.e. the better effects if of filtration treatment.
With reference to Fig. 8, when water temperature>=15 ℃ AndIn the time of≤20 ℃, the rotating speed of pump is merely 90% rated speed, and the consumed power of pump only is about 90% rated power, can practice thrift the electric energy near 10%; When water temperature less than 15 ℃, the rotating speed of pump is merely 75% rated speed, the consumed power of pump only is about 75% rated power, can practice thrift near 25% electric energy.
Mode of execution three:
With reference to Fig. 1, Fig. 2, Fig. 3, Figure 10 and Figure 11; It is that another practical implementation algorithm application is in the water filtration processing method of culturing the pond; In this algorithm,, transfer corresponding different rotating speeds according to different temperatures according to the curve of Figure 11; And compare with the actual time of rotating half cycle of rotor by the set time of rotor rotation half cycle in the pairing pump of different rotating speeds; Further regulate the increase and decrease of drive control signal pulse width according to result relatively, motor is operated on the corresponding rotating speeds, to obtain corresponding water flow.
With reference to Figure 12; In ammonia nitrogen concentration curve comparison diagram, the concentration curve of correspondence when curve a is rated speed, curve b are the concentration curve corresponding according to the rotating speed of different temperatures; The corresponding concentration curve of 100% nominal pulse width when curve c is >=22 ℃~30 ℃ high temperature section; Can see: when temperature less than 22 ℃, the concentration value on the curve b is lower than curve a concentration value, i.e. the better effects if of filtration treatment.
With reference to Figure 11, when water temperature during less than 22 ℃, the rotating ratio rated speed of pump is little, and output power is also little than rated power, equally can saving power.

Claims (5)

1. a water filtration processing method that is applied to culture the pond comprises and adopts the physical filtering device water quality in the breed pond to be carried out the step of physical filtering; Adopt biochemistry filtered device that the water quality of culturing in the pond is carried out biochemistry filtered step; Adopt water plug that the water of culturing in the pond is carried out the circuit step; In water plug; Detect the magnetic polarity signal of rotor in the pump by the magnetic polarity testing circuit; Export drive control signal after the treated control circuit computing, and meet the driving current of motor service condition, make motor rotation in the pump through drive circuit output current polarity; Be characterized in; Adopt a temperature sensing circuit that the coolant-temperature gage of culturing in the pond is measured, control and treatment circuit carries out computing according to the detected coolant-temperature gage of temperature sensing circuit simultaneously, regulates the pulse width of drive control signal according to following algorithm:
In the scope of 0 ℃~40 ℃ of water temperatures, be divided into two or more temperature sections; At the lower temperature section of temperature, the pulse width of drive control signal is narrower, obtains less water flow with less output power; At the higher temperature section of temperature, the pulse width broad of drive control signal obtains bigger water flow with bigger output power.
2. according to the water filtration processing method that is applied to culture the pond of claim 1, the scope of water temperature is 10 ℃~30 ℃.
3. according to the water filtration processing method that is applied to culture the pond of claim 1 or 2; The pulse width system of drive control signal adopts according to different temperatures and transfers corresponding different rotating speeds; And compare with the actual time of rotating half cycle of rotor by the set time of rotor rotation half cycle in the pairing pump of different rotating speeds; Further regulate the increase and decrease of drive control signal pulse width according to result relatively, motor is operated on the rotating speed of setting, so that obtain corresponding water flow.
4. according to the water filtration processing method that is applied to culture the pond of claim 1 or 2, adopt the parameter input circlult to import the different parameters that is provided with, so that control and treatment circuit operates on the different parameters to control and treatment circuit.
5. according to the water filtration processing method that is applied to culture the pond of claim 3, adopt the parameter input circlult to import the different parameters that is provided with, so that control and treatment circuit operates on the different parameters to control and treatment circuit.
CN201210117833.7A 2012-04-21 2012-04-21 Water quality filtering treatment method applied to culture pond Active CN102644584B (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
CN201210117833.7A CN102644584B (en) 2012-04-21 2012-04-21 Water quality filtering treatment method applied to culture pond

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
CN201210117833.7A CN102644584B (en) 2012-04-21 2012-04-21 Water quality filtering treatment method applied to culture pond

Publications (2)

Publication Number Publication Date
CN102644584A true CN102644584A (en) 2012-08-22
CN102644584B CN102644584B (en) 2014-03-05

Family

ID=46657618

Family Applications (1)

Application Number Title Priority Date Filing Date
CN201210117833.7A Active CN102644584B (en) 2012-04-21 2012-04-21 Water quality filtering treatment method applied to culture pond

Country Status (1)

Country Link
CN (1) CN102644584B (en)

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO2013155648A1 (en) * 2012-04-21 2013-10-24 Yu Bingyan Culture pond pumping device and water filtration system comprising same
CN113624296A (en) * 2021-07-09 2021-11-09 杭州和而泰智能控制技术有限公司 Capacitive water level detection device and algorithm

Citations (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN1223029A (en) * 1996-05-02 1999-07-14 西门子加拿大有限公司 Control circuit for five-phase brushless DC motor
CN2425504Y (en) * 2000-06-28 2001-04-04 中国科学院海洋研究所 Ultra-intensive sea water culture box
JP2006224261A (en) * 2005-02-18 2006-08-31 Tsudakoma Corp Chucking failure detector for permanent electromagnetic chuck
CN101871462A (en) * 2009-04-24 2010-10-27 大连四方电泵有限公司 Magnetic drive pump operation monitoring system
CN102200121A (en) * 2010-03-25 2011-09-28 上海乐普能源科技发展有限公司 Electricity-saving control system leading water pump to run at optimum revolution

Patent Citations (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN1223029A (en) * 1996-05-02 1999-07-14 西门子加拿大有限公司 Control circuit for five-phase brushless DC motor
CN2425504Y (en) * 2000-06-28 2001-04-04 中国科学院海洋研究所 Ultra-intensive sea water culture box
JP2006224261A (en) * 2005-02-18 2006-08-31 Tsudakoma Corp Chucking failure detector for permanent electromagnetic chuck
CN101871462A (en) * 2009-04-24 2010-10-27 大连四方电泵有限公司 Magnetic drive pump operation monitoring system
CN102200121A (en) * 2010-03-25 2011-09-28 上海乐普能源科技发展有限公司 Electricity-saving control system leading water pump to run at optimum revolution

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO2013155648A1 (en) * 2012-04-21 2013-10-24 Yu Bingyan Culture pond pumping device and water filtration system comprising same
CN113624296A (en) * 2021-07-09 2021-11-09 杭州和而泰智能控制技术有限公司 Capacitive water level detection device and algorithm

Also Published As

Publication number Publication date
CN102644584B (en) 2014-03-05

Similar Documents

Publication Publication Date Title
CN103704166B (en) Building structure with storied house built on ground and zoology circulating water fish-farming workshop built underground
CN101120661A (en) Ecological fishery cultivating device and method based on composite vertical current artificial wet land
CN103999812A (en) Fish-vegetable symbiotic integration system
CN205794503U (en) A kind of environmental rice fish cycling use of water facility
CN105638527B (en) A kind of culture of Penaeus vannamei method of green high yield
CN104430125B (en) A kind of high-efficiency aquaculture system and method
CN204047619U (en) A kind of fish and vegetable symbiotic integration system
CN1181730C (en) Indoor automatic breeding system
CN103848502B (en) A kind of water plant filter bed system purified containing antibiotic breeding wastewater
CN108358323A (en) A kind of purifying water micrcxDrganism automatic vaccination corollary apparatus and its method
CN203538134U (en) Pond aquaculture system for biofloc breeding and floc concentration control
CN102267787A (en) Method for treating livestock and poultry culture polluted marsh solution
CN216452710U (en) Brocade carp and vegetable symbiotic recirculating aquaculture system
CN102644584B (en) Water quality filtering treatment method applied to culture pond
CN105060648A (en) Industrial circulating water fish-culture denitrification zero-emission system
CN104542426A (en) Recycling method of water for breeding penaeus vannamei boone in greenhouse
CN203538040U (en) Fish and vegetable symbiotic system
CN203814394U (en) Experimental device for cultivating fish in circulatory running water
CN105255722A (en) System and method of culturing microalgae with liquid animal manure
CN109912134A (en) A kind of freshwater aquiculture tail water treatment system
CN100556829C (en) Utilize deep-flow technique to repair the method for eutrophication water
CN202811301U (en) Water pumping device applied to water filtration and treatment system in culture pond
CN102644583B (en) Pumping device applied to water quality filtering treatment system of culture pond
CN205233161U (en) Indoor aquatic products biological incubation test device
CN102642983B (en) Water-quality filtration processing system for culture pond

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
EE01 Entry into force of recordation of patent licensing contract

Application publication date: 20120822

Assignee: Guangdong Bo Yu Group Co., Ltd

Assignor: Yu Bingyan

Contract record no.: 2014440000200

Denomination of invention: Water quality filtering treatment method applied to culture pond

Granted publication date: 20140305

License type: Exclusive License

Record date: 20140507

LICC Enforcement, change and cancellation of record of contracts on the licence for exploitation of a patent or utility model