WO2017113285A1

WO2017113285A1 - Effective algaculture equipment

Info

Publication number: WO2017113285A1
Application number: PCT/CN2015/100098
Authority: WO
Inventors: 肖溪; 潘耀茹; 林芳; 李科; 于琰; 温伯格•托马斯; 樊炜; 潘依雯; 吴嘉平
Original assignee: 浙江大学
Priority date: 2015-12-31
Filing date: 2015-12-31
Publication date: 2017-07-06

Abstract

The present invention provides an algaculture equipment, comprising a main spindle (1), a solar panel (2), a driving motor (3), a rotating wheel (4), a steel wire (5), an algae cultivation rope, and a supporting stand (6). The equipment uses an LED as supplemental lighting for algal growth. The rotating wheel rotates the algae, improves the CO₂-O₂ aqueous gas exchange rate between seawater and air, and improves nutrient exchange between an upper layer and a lower layer of seawater. Solar power is used to power the motor to reduce energy consumption and for environmental conservation.

Description

High-efficiency seaweed breeding equipment

Technical field

The invention belongs to the technical field of seaweed culture, and relates to a seaweed breeding device which can be regulated based on environmental factors and can improve the production of seaweed culture.

Background technique

When China has a large population and rapid economic development, it consumes a lot of land resources and restricts the healthy and sustainable development of the economy. Therefore, it seeks new and available resources and explores a sustainable development path, which has become an urgent problem for China’s current economic development. . In the 21st century, the marine economy has increasingly become an important economic development mode for a country and region. China has a land area of about 1/3 of the land area, and the total length of the coastline is 32,000 kilometers. Therefore, the marine economy industry has broad development space and huge development potential.

In the face of abundant marine resources, marine aquaculture has become an important way to develop “blue agriculture”. Seaweed is rich in nutrients. It can be used as a food, as a raw material for health care products and chemical industry. It has important economic value and has gradually become a key development target for marine aquaculture. The flow of nutrients and the light conditions in the water have an important influence on the growth of algae. At present, when large seaweed is cultured in the culture pond, the nutrient salt in the water body is not sufficient, and the seaweed cannot fully absorb the nutrients in the water; the light required for the growth of seaweed mainly depends on natural light and artificial light source. The light intensity and illumination time of natural light change with the changes of the surrounding environment such as weather, season and seawater transparency, affecting the absorption and utilization of light energy by algae cells, thereby limiting the growth of algae; the photosynthesis of seaweed mainly absorbs blue light and red light. Traditional artificial light sources mainly include fluorescent lamps, high-pressure sodium lamps and daylight-colored xenon lamps. The spectrum of these light sources is a continuous composite spectrum, which cannot adjust the optical parameters such as red and blue light ratio, which causes some spectrum to be wasted to some extent. , seaweed light filling efficiency is low. At the same time, most of these artificial light sources are thermal light sources. The long-time irradiation will increase the temperature of seawater, and the temperature of normal growth of seaweed will change, which is not conducive to its growth.

Summary of the invention

The object of the present invention is to provide a novel seaweed breeding device for using the LED fill light to improve the problem of insufficient illumination during the growth of seaweed caused by rainy weather or seawater turbidity, and use the turntable to drive the rotation of the algae body. It accelerates the relative movement of seaweed and water bodies, makes the flow of nutrients in the water more complete, and promotes the absorption and utilization of nutrients in the water by seaweed, thereby promoting the growth of seaweed.

The object of the present invention is achieved by the following technical solutions: a new high-efficiency seaweed breeding equipment based on environmental factor regulation, the seaweed breeding equipment mainly comprises a main shaft, a solar panel, a driving motor, a turntable, a steel wire, and an algae hanging nursery rope. Characterized in that the spindle is vertically disposed; the solar panel Fixed on the top of the main shaft, the output shaft of the driving motor is connected to the main shaft, the driving motor drives the main shaft to rotate along the axis, and the solar panel supplies power to the driving motor; the rotating disc is fixed on the main shaft by the steel wire, and the seaweed is hung to the nursery rope Both ends are fixed to the wire.

Further, the interval of the steel wires depends on the type of the seaweed to be bred.

Still further, the device further includes a microcomputer, the microcomputer is connected to the driving motor; the microcomputer receives the environmental information through the wireless network, and controls the output power of the driving motor according to the environmental information, thereby controlling the rotating speed of the turntable; the environmental information refers to the seawater flow rate, The output power of the drive motor is:

P=m. g. (v _s –v _d )/9550

P—Motor output power in W (Watt).

m—The quality of algae hanging on the turntable, in kg.

G—gravitational acceleration, unit: 9.81 m/s ² .

v _s — the optimum growth rate of seawater for algae, in m/s.

v _d — actual flow rate of seawater in m/s.

n=(v _s –v _d )/r

N—turntable speed, unit: rad/s

v _s — the optimum growth rate of seawater for algae, in m/s.

v _d — actual flow rate of seawater in m/s.

R—radius of the turntable, unit: m

Further, the apparatus further includes a red LED light source and a blue LED light source disposed on the steel wire; the red LED light source has a wavelength range of 630 nm to 720 nm, and the blue LED light source has a wavelength range of 410 nm to 480 nm.

Further, the red LED light source and the blue LED light source are both connected to a microcomputer, and the microcomputer controls the luminous intensity and the light dark period of the red LED light source and the blue LED light source according to the environmental information, and the environmental information includes the real-time cloud layer thickness of the cultured sea area. , seawater turbidity, solar light intensity and illumination time, specifically:

P _c = π. r ² . (I _s –I _d )/η

P _c — the luminous power of the LED light source output by the microcomputer, in units of W (Watts)

R—turntable radius, unit: m.

I _s — the optimum light intensity for algae growth, in lux.

I _d — actual light intensity in the algae growth environment, in lux.

η—The light effect of the LED light source.

Still further, the apparatus further includes a bracket mounted on the bracket.

The invention has the following advantages:

(1) According to the photosynthesis of seaweed, the main source of light absorption is red light and blue light, and the red light LED light source and the blue light light source are used as supplementary light sources of seaweed, thereby improving the illumination spectrum of seaweed and improving the absorption and utilization of light by seaweed. The rate not only avoids the waste of light, but also promotes the photosynthesis of seaweed, which can increase the aquaculture production of seaweed and shorten the market cycle of seaweed. At the same time, the LED fill light source is a cold light source. When the seaweed is irradiated at a close distance, the phenomenon of burning seaweed does not occur, and the temperature of the water body is not increased to destroy the normal growth temperature of the seaweed.

(2) According to the real-time situation of the environmental factors (cloud thickness, seawater turbidity, solar light intensity and illumination time) of the cultured sea area, the microcomputer can control the luminous intensity and the light-dark cycle of the LED light source by using a microcomputer to improve the weather or the seawater by the rainy weather or the seawater. The problem of insufficient illumination during the growth of seaweed caused by turbidity.

(3) The invention utilizes a turntable to drive the rotation of the algae, accelerate the relative movement of the seaweed and the water body, promote the water-gas exchange rate of the seawater and air CO ₂ -O ₂ , increase the dissolved oxygen content in the seawater, and promote the lower seawater and the upper seawater. The flow of nutrients allows the seaweed to fully absorb the nutrients in the water.

(4) The invention utilizes solar panels to convert solar energy into driving power of seaweed breeding equipment, and is energy-saving and environmentally friendly.

DRAWINGS

Figure 1 is a schematic diagram of a novel high-efficiency seaweed culture equipment based on environmental factor regulation.

detailed description

As shown in FIG. 1 , a high-efficiency seaweed breeding device mainly comprises a main shaft 1, a solar light plate 2, a driving motor 3, a turntable 4, a steel wire 5 and a seaweed hanging nursery rope, wherein the main shaft 1 is vertically disposed; 2 is fixed on the top of the main shaft 1, the output shaft of the drive motor 3 is connected to the main shaft 1, the drive motor 3 drives the main shaft 1 to rotate along the axis, and the solar panel 2 supplies power to the drive motor 3; the turntable 4 is fixed to the main shaft by the steel wire 5 In the above, both ends of the seaweed hanging nursery rope are fixed on the steel wire 5.

The above device further comprises a microcomputer for realizing intelligent control, the microcomputer is connected with the driving motor 3; the microcomputer receives environmental information through the wireless network, and controls the output power of the driving motor 3 according to the environmental information, thereby controlling the rotation speed of the turntable; the environmental information refers to sea water The flow rate, the output power of the drive motor is:

P=m. g. v _s –v _d /9550

P—Motor output power in W (Watt). m—The quality of algae hanging on the turntable, in kg. G—gravitational acceleration, unit: 9.81 m/s ² . v _s - The optimum growth rate of seawater for seaweed is well known in the art and can be found in J. Phycol. 44, 320-330 (2008), Marine Biology 69, 51-54 (1982) and the like. Unit: m/s. v _d — actual flow rate of seawater in m/s.

n=v _s –v _d /r

N—rotary speed, unit: rad/s; v _s —the optimal growth rate of seawater in seaweed, in m/s. v _d — actual flow rate of seawater in m/s. R—the radius of the turntable, in m:

A red LED source and a blue LED source disposed on the wire 5 may also be included; the red LED source has a wavelength in the range of 630 nm to 720 nm, and the blue LED source has a wavelength in the range of 410 nm to 480 nm. Preferably, the red LED light source and the blue LED light source are both connected to the microcomputer to implement intelligent light control, and the microcomputer controls the luminous intensity and the light dark period of the red LED light source and the blue LED light source according to the environmental information, and the environmental information includes The actual light intensity in the algae growth environment is specifically:

P _c = π. r ² . I _s –I _d /η

P _c — The luminous power of the LED light source output by the microcomputer, in W (Watt). R—turntable radius, unit: m. I _s — the optimum light intensity for algae growth, in lux. I _d — actual light intensity in the algae growth environment, in lux. η—The light effect of the LED light source.

In the figure, the device may further comprise a bracket 6 mounted on the bracket 6.

The above equipment is used for the cultivation of Sargassum. In the first ten days of October, the equipment of the invention was fixed in the culture of the larvae, which was small in wind and waves, smooth in flow, fertile water, and transparent in seawater of 1 to 3 m. According to the size of the seedlings of the Sargassum chinensis and the space required for growth, the spacing of the wires on the turntable is set to a wire every 36°. The red LED light source and the blue LED light source are fixed to the steel wire. The juniper seedlings were clamped to the seedling rope, the rope length was 50 cm, 20 to 30 strains per rope seedling, and the two ends of the seedling rope with the seedlings of the goatskin were fixed at both ends of the steel wire. According to the seawater flow rate in the culture area of the arborvitae culture, determine the rotation speed required for the culture of the sage, and then set the output power of the driving motor of the breeding equipment; according to the actual light intensity in the algae growth environment, the red LED light source and the blue LED are set by the microcomputer. The luminous intensity and dark period of the light source. Table 1 shows the specific growth rate (SRG) comparison of Sargassum under different setting conditions.

Table 1 shows the specific growth rate (SRG) of Sargassum under different setting conditions

When performing photosynthesis, it mainly absorbs red light and blue light in sunlight, which are the main absorption peaks of chlorophyll and carotene, respectively. Therefore, red and blue LED light sources are added to the steel wire of the breeding equipment of the present invention, which effectively compensates for insufficient illumination. The problem of growth and material accumulation of the sage. Since the sage is necessary for the absorption of nutrients and photosynthesis, sufficient dissolved oxygen is required. Therefore, the culture equipment of the present invention increases the water-vapor exchange rate of CO ₂ -O ₂ in seawater by rotating the turntable, and increases the seawater. The content of dissolved oxygen in the medium; also promotes the exchange of nutrients between the lower seawater and the upper seawater, and promotes the absorption and utilization of nutrients in the water by the sage.

Claims

The invention relates to a high-efficiency seaweed breeding device, characterized in that the seaweed breeding equipment mainly comprises a main shaft (1), a solar light plate (2), a driving motor (3), a turntable (4), a steel wire (5) and a seaweed hanging nursery rope. The main shaft (1) is vertically disposed; the solar panel (2) is fixed on the top of the main shaft (1), the output shaft of the driving motor (3) is connected to the main shaft (1), and the driving motor (3) is driven. The main shaft (1) rotates along the axis, and the solar panel (2) supplies power to the driving motor (3); the rotating disc (4) is fixed on the main shaft (1) by the steel wire (5), and the two ends of the seaweed hang the nursery rope Fixed to the wire (5).
The high-efficiency seaweed breeding device according to claim 1, wherein the device further comprises a microcomputer, the microcomputer is connected to the driving motor (3); the microcomputer receives the environmental information through the wireless network, and controls the driving motor according to the environmental information (3) The output power, which in turn controls the rotational speed of the turntable; the environmental information refers to the seawater flow rate, and the output power of the drive motor is:

P=m. g. (v s –v d )/9550

P—motor output power, unit: W (watt);

M—the quality of seaweed hanging on the turntable, unit: kg;

G—gravitational acceleration, unit: 9.81 m/s 2 ;

v s — the optimum growth rate of seawater for seaweed, in m/s;

v d — the actual flow rate of seawater, in m/s;

n=(v s –v d )/r

N—rotary speed, unit: rad/s;

v s — the optimum growth rate of seawater for seaweed, in m/s;

v d — the actual flow rate of seawater, in m/s;

r—The radius of the turntable, in m.
The high-efficiency seaweed culture apparatus according to claim 2, wherein the apparatus further comprises a red LED light source and a blue LED light source disposed on the steel wire (5); the red light LED light source has a wavelength range of 630 nm to 720 nm. The wavelength range of the blue LED source is 410 nm to 480 nm.
The high-efficiency seaweed breeding device according to claim 3, wherein the red LED light source and the blue LED light source are both connected to a microcomputer, and the microcomputer controls the luminous intensity and the light-dark period of the red LED light source and the blue LED light source according to the environmental information. The environmental information includes actual light in a seaweed growing environment Photo intensity, specifically:

P c = π. r 2 . (I s –I d )/η

P c — the luminous power of the LED light source output by the microcomputer, in units of W (Watts);

R—turntable radius, unit: m;

I s - the optimum light intensity for algae growth, in lux;

I d — actual light intensity in the algae growth environment, in lux;

η—The light effect of the LED light source.
A novel high-efficiency seaweed culture apparatus based on environmental factor regulation according to any one of claims 1 to 4, characterized in that the apparatus further comprises a bracket (6), and the main shaft (1) is mounted on the bracket (6) on.